From 7210448edc0fee5163f31789024556b226dec647 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:00 +0200 Subject: block: Remove unused BlockReopenQueueEntry.perms_checked This field has been unused since commit 72373e40fbc ('block: bdrv_reopen_multiple: refresh permissions on updated graph'). Remove it. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-2-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block.c | 1 - 1 file changed, 1 deletion(-) diff --git a/block.c b/block.c index 8da89aa..9029ddd 100644 --- a/block.c +++ b/block.c @@ -2115,7 +2115,6 @@ static int bdrv_fill_options(QDict **options, const char *filename, typedef struct BlockReopenQueueEntry { bool prepared; - bool perms_checked; BDRVReopenState state; QTAILQ_ENTRY(BlockReopenQueueEntry) entry; } BlockReopenQueueEntry; -- cgit v1.1 From 01e28f6006e689fc4d0ce0f7246ce1e5cbdef758 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:01 +0200 Subject: preallocate: Factor out preallocate_truncate_to_real_size() It's essentially the same code in preallocate_check_perm() and preallocate_close(), except that the latter ignores errors. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-3-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block/preallocate.c | 48 ++++++++++++++++++++++-------------------------- 1 file changed, 22 insertions(+), 26 deletions(-) diff --git a/block/preallocate.c b/block/preallocate.c index 3d0f621..3173d80 100644 --- a/block/preallocate.c +++ b/block/preallocate.c @@ -162,26 +162,39 @@ static int preallocate_open(BlockDriverState *bs, QDict *options, int flags, return 0; } -static void preallocate_close(BlockDriverState *bs) +static int preallocate_truncate_to_real_size(BlockDriverState *bs, Error **errp) { - int ret; BDRVPreallocateState *s = bs->opaque; - - if (s->data_end < 0) { - return; - } + int ret; if (s->file_end < 0) { s->file_end = bdrv_getlength(bs->file->bs); if (s->file_end < 0) { - return; + error_setg_errno(errp, -s->file_end, "Failed to get file length"); + return s->file_end; } } if (s->data_end < s->file_end) { ret = bdrv_truncate(bs->file, s->data_end, true, PREALLOC_MODE_OFF, 0, NULL); - s->file_end = ret < 0 ? ret : s->data_end; + if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to drop preallocation"); + s->file_end = ret; + return ret; + } + s->file_end = s->data_end; + } + + return 0; +} + +static void preallocate_close(BlockDriverState *bs) +{ + BDRVPreallocateState *s = bs->opaque; + + if (s->data_end >= 0) { + preallocate_truncate_to_real_size(bs, NULL); } } @@ -473,24 +486,7 @@ static int preallocate_check_perm(BlockDriverState *bs, * We should truncate in check_perm, as in set_perm bs->file->perm will * be already changed, and we should not violate it. */ - if (s->file_end < 0) { - s->file_end = bdrv_getlength(bs->file->bs); - if (s->file_end < 0) { - error_setg(errp, "Failed to get file length"); - return s->file_end; - } - } - - if (s->data_end < s->file_end) { - int ret = bdrv_truncate(bs->file, s->data_end, true, - PREALLOC_MODE_OFF, 0, NULL); - if (ret < 0) { - error_setg(errp, "Failed to drop preallocation"); - s->file_end = ret; - return ret; - } - s->file_end = s->data_end; - } + return preallocate_truncate_to_real_size(bs, errp); } return 0; -- cgit v1.1 From edcce17b1590d0e785d303d31a7b08182a1bdb1e Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:02 +0200 Subject: preallocate: Don't poll during permission updates When the permission related BlockDriver callbacks are called, we are in the middle of an operation traversing the block graph. Polling in such a place is a very bad idea because the graph could change in unexpected ways. In the future, callers will also hold the graph lock, which is likely to turn polling into a deadlock. So we need to get rid of calls to functions like bdrv_getlength() or bdrv_truncate() there as these functions poll internally. They are currently used so that when no parent has write/resize permissions on the image any more, the preallocate filter drops the extra preallocated area in the image file and gives up write/resize permissions itself. In order to achieve this without polling in .bdrv_check_perm, don't immediately truncate the image, but only schedule a BH to do so. The filter keeps the write/resize permissions a bit longer now until the BH has executed. There is one case in which delaying doesn't work: Reopening the image read-only. In this case, bs->file will likely be reopened read-only, too, so keeping write permissions a bit longer on it doesn't work. But we can already cover this case in preallocate_reopen_prepare() and not rely on the permission updates for it. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-4-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block/preallocate.c | 89 +++++++++++++++++++++++++++++++++++++++++------------ 1 file changed, 69 insertions(+), 20 deletions(-) diff --git a/block/preallocate.c b/block/preallocate.c index 3173d80..bfb638d 100644 --- a/block/preallocate.c +++ b/block/preallocate.c @@ -75,8 +75,14 @@ typedef struct BDRVPreallocateState { * be invalid (< 0) when we don't have both exclusive BLK_PERM_RESIZE and * BLK_PERM_WRITE permissions on file child. */ + + /* Gives up the resize permission on children when parents don't need it */ + QEMUBH *drop_resize_bh; } BDRVPreallocateState; +static int preallocate_drop_resize(BlockDriverState *bs, Error **errp); +static void preallocate_drop_resize_bh(void *opaque); + #define PREALLOCATE_OPT_PREALLOC_ALIGN "prealloc-align" #define PREALLOCATE_OPT_PREALLOC_SIZE "prealloc-size" static QemuOptsList runtime_opts = { @@ -142,6 +148,7 @@ static int preallocate_open(BlockDriverState *bs, QDict *options, int flags, * For this to work, mark them invalid. */ s->file_end = s->zero_start = s->data_end = -EINVAL; + s->drop_resize_bh = qemu_bh_new(preallocate_drop_resize_bh, bs); ret = bdrv_open_file_child(NULL, options, "file", bs, errp); if (ret < 0) { @@ -193,6 +200,9 @@ static void preallocate_close(BlockDriverState *bs) { BDRVPreallocateState *s = bs->opaque; + qemu_bh_cancel(s->drop_resize_bh); + qemu_bh_delete(s->drop_resize_bh); + if (s->data_end >= 0) { preallocate_truncate_to_real_size(bs, NULL); } @@ -211,6 +221,7 @@ static int preallocate_reopen_prepare(BDRVReopenState *reopen_state, BlockReopenQueue *queue, Error **errp) { PreallocateOpts *opts = g_new0(PreallocateOpts, 1); + int ret; if (!preallocate_absorb_opts(opts, reopen_state->options, reopen_state->bs->file->bs, errp)) { @@ -218,6 +229,19 @@ static int preallocate_reopen_prepare(BDRVReopenState *reopen_state, return -EINVAL; } + /* + * Drop the preallocation already here if reopening read-only. The child + * might also be reopened read-only and then scheduling a BH during the + * permission update is too late. + */ + if ((reopen_state->flags & BDRV_O_RDWR) == 0) { + ret = preallocate_drop_resize(reopen_state->bs, errp); + if (ret < 0) { + g_free(opts); + return ret; + } + } + reopen_state->opaque = opts; return 0; @@ -475,41 +499,61 @@ preallocate_co_getlength(BlockDriverState *bs) return ret; } -static int preallocate_check_perm(BlockDriverState *bs, - uint64_t perm, uint64_t shared, Error **errp) +static int preallocate_drop_resize(BlockDriverState *bs, Error **errp) { BDRVPreallocateState *s = bs->opaque; + int ret; - if (s->data_end >= 0 && !can_write_resize(perm)) { - /* - * Lose permissions. - * We should truncate in check_perm, as in set_perm bs->file->perm will - * be already changed, and we should not violate it. - */ - return preallocate_truncate_to_real_size(bs, errp); + if (s->data_end < 0) { + return 0; + } + + /* + * Before switching children to be read-only, truncate them to remove + * the preallocation and let them have the real size. + */ + ret = preallocate_truncate_to_real_size(bs, errp); + if (ret < 0) { + return ret; } + /* + * We'll drop our permissions and will allow other users to take write and + * resize permissions (see preallocate_child_perm). Anyone will be able to + * change the child, so mark all states invalid. We'll regain control if a + * parent requests write access again. + */ + s->data_end = s->file_end = s->zero_start = -EINVAL; + + bdrv_graph_rdlock_main_loop(); + bdrv_child_refresh_perms(bs, bs->file, NULL); + bdrv_graph_rdunlock_main_loop(); + return 0; } +static void preallocate_drop_resize_bh(void *opaque) +{ + /* + * In case of errors, we'll simply keep the exclusive lock on the image + * indefinitely. + */ + preallocate_drop_resize(opaque, NULL); +} + static void preallocate_set_perm(BlockDriverState *bs, uint64_t perm, uint64_t shared) { BDRVPreallocateState *s = bs->opaque; if (can_write_resize(perm)) { + qemu_bh_cancel(s->drop_resize_bh); if (s->data_end < 0) { s->data_end = s->file_end = s->zero_start = - bdrv_getlength(bs->file->bs); + bs->file->bs->total_sectors * BDRV_SECTOR_SIZE; } } else { - /* - * We drop our permissions, as well as allow shared - * permissions (see preallocate_child_perm), anyone will be able to - * change the child, so mark all states invalid. We'll regain control if - * get good permissions back. - */ - s->data_end = s->file_end = s->zero_start = -EINVAL; + qemu_bh_schedule(s->drop_resize_bh); } } @@ -517,10 +561,16 @@ static void preallocate_child_perm(BlockDriverState *bs, BdrvChild *c, BdrvChildRole role, BlockReopenQueue *reopen_queue, uint64_t perm, uint64_t shared, uint64_t *nperm, uint64_t *nshared) { + BDRVPreallocateState *s = bs->opaque; + bdrv_default_perms(bs, c, role, reopen_queue, perm, shared, nperm, nshared); - if (can_write_resize(perm)) { - /* This should come by default, but let's enforce: */ + /* + * We need exclusive write and resize permissions on the child not only when + * the parent can write to it, but also after the parent gave up write + * permissions until preallocate_drop_resize() has completed. + */ + if (can_write_resize(perm) || s->data_end != -EINVAL) { *nperm |= BLK_PERM_WRITE | BLK_PERM_RESIZE; /* @@ -550,7 +600,6 @@ static BlockDriver bdrv_preallocate_filter = { .bdrv_co_flush = preallocate_co_flush, .bdrv_co_truncate = preallocate_co_truncate, - .bdrv_check_perm = preallocate_check_perm, .bdrv_set_perm = preallocate_set_perm, .bdrv_child_perm = preallocate_child_perm, -- cgit v1.1 From 487b91870face8973e78d82cd312a77d8f9f5363 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:03 +0200 Subject: block: Take AioContext lock for bdrv_append() more consistently The documentation for bdrv_append() says that the caller must hold the AioContext lock for bs_top. Change all callers to actually adhere to the contract. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-5-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- tests/unit/test-bdrv-drain.c | 3 +++ tests/unit/test-bdrv-graph-mod.c | 6 ++++++ tests/unit/test-block-iothread.c | 3 +++ 3 files changed, 12 insertions(+) diff --git a/tests/unit/test-bdrv-drain.c b/tests/unit/test-bdrv-drain.c index ccc453c..89c8fa6 100644 --- a/tests/unit/test-bdrv-drain.c +++ b/tests/unit/test-bdrv-drain.c @@ -1359,7 +1359,10 @@ static void test_append_to_drained(void) g_assert_cmpint(base_s->drain_count, ==, 1); g_assert_cmpint(base->in_flight, ==, 0); + aio_context_acquire(qemu_get_aio_context()); bdrv_append(overlay, base, &error_abort); + aio_context_release(qemu_get_aio_context()); + g_assert_cmpint(base->in_flight, ==, 0); g_assert_cmpint(overlay->in_flight, ==, 0); diff --git a/tests/unit/test-bdrv-graph-mod.c b/tests/unit/test-bdrv-graph-mod.c index 36eed4b..d850316 100644 --- a/tests/unit/test-bdrv-graph-mod.c +++ b/tests/unit/test-bdrv-graph-mod.c @@ -140,8 +140,10 @@ static void test_update_perm_tree(void) bdrv_attach_child(filter, bs, "child", &child_of_bds, BDRV_CHILD_DATA, &error_abort); + aio_context_acquire(qemu_get_aio_context()); ret = bdrv_append(filter, bs, NULL); g_assert_cmpint(ret, <, 0); + aio_context_release(qemu_get_aio_context()); bdrv_unref(filter); blk_unref(root); @@ -205,7 +207,9 @@ static void test_should_update_child(void) g_assert(target->backing->bs == bs); bdrv_attach_child(filter, target, "target", &child_of_bds, BDRV_CHILD_DATA, &error_abort); + aio_context_acquire(qemu_get_aio_context()); bdrv_append(filter, bs, &error_abort); + aio_context_release(qemu_get_aio_context()); g_assert(target->backing->bs == bs); bdrv_unref(filter); @@ -410,7 +414,9 @@ static void test_append_greedy_filter(void) BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY, &error_abort); + aio_context_acquire(qemu_get_aio_context()); bdrv_append(fl, base, &error_abort); + aio_context_release(qemu_get_aio_context()); bdrv_unref(fl); bdrv_unref(top); } diff --git a/tests/unit/test-block-iothread.c b/tests/unit/test-block-iothread.c index d727a5f..9155547 100644 --- a/tests/unit/test-block-iothread.c +++ b/tests/unit/test-block-iothread.c @@ -756,11 +756,14 @@ static void test_propagate_mirror(void) &error_abort); /* Start a mirror job */ + aio_context_acquire(main_ctx); mirror_start("job0", src, target, NULL, JOB_DEFAULT, 0, 0, 0, MIRROR_SYNC_MODE_NONE, MIRROR_OPEN_BACKING_CHAIN, false, BLOCKDEV_ON_ERROR_REPORT, BLOCKDEV_ON_ERROR_REPORT, false, "filter_node", MIRROR_COPY_MODE_BACKGROUND, &error_abort); + aio_context_release(main_ctx); + WITH_JOB_LOCK_GUARD() { job = job_get_locked("job0"); } -- cgit v1.1 From ac2ae233a0c266676195c0374195ec57197076cf Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:04 +0200 Subject: block: Introduce bdrv_schedule_unref() bdrv_unref() is called by a lot of places that need to hold the graph lock (it naturally happens in the context of operations that change the graph). However, bdrv_unref() takes the graph writer lock internally, so it can't actually be called while already holding a graph lock without causing a deadlock. bdrv_unref() also can't just become GRAPH_WRLOCK because it drains the node before closing it, and draining requires that the graph is unlocked. The solution is to defer deleting the node until we don't hold the lock any more and draining is possible again. Note that keeping images open for longer than necessary can create problems, too: You can't open an image again before it is really closed (if image locking didn't prevent it, it would cause corruption). Reopening an image immediately happens at least during bdrv_open() and bdrv_co_create(). In order to solve this problem, make sure to run the deferred unref in bdrv_graph_wrunlock(), i.e. the first possible place where we can drain again. This is also why bdrv_schedule_unref() is marked GRAPH_WRLOCK. The output of iotest 051 is updated because the additional polling changes the order of HMP output, resulting in a new "(qemu)" prompt in the test output that was previously on a separate line and filtered out. Signed-off-by: Kevin Wolf Message-ID: <20230911094620.45040-6-kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi Signed-off-by: Kevin Wolf --- block.c | 17 +++++++++++++++++ block/graph-lock.c | 26 +++++++++++++++++++------- include/block/block-global-state.h | 1 + tests/qemu-iotests/051.pc.out | 6 +++--- 4 files changed, 40 insertions(+), 10 deletions(-) diff --git a/block.c b/block.c index 9029ddd..c8ac7cf 100644 --- a/block.c +++ b/block.c @@ -7044,6 +7044,23 @@ void bdrv_unref(BlockDriverState *bs) } } +/* + * Release a BlockDriverState reference while holding the graph write lock. + * + * Calling bdrv_unref() directly is forbidden while holding the graph lock + * because bdrv_close() both involves polling and taking the graph lock + * internally. bdrv_schedule_unref() instead delays decreasing the refcount and + * possibly closing @bs until the graph lock is released. + */ +void bdrv_schedule_unref(BlockDriverState *bs) +{ + if (!bs) { + return; + } + aio_bh_schedule_oneshot(qemu_get_aio_context(), + (QEMUBHFunc *) bdrv_unref, bs); +} + struct BdrvOpBlocker { Error *reason; QLIST_ENTRY(BdrvOpBlocker) list; diff --git a/block/graph-lock.c b/block/graph-lock.c index f357a2c..58a7990 100644 --- a/block/graph-lock.c +++ b/block/graph-lock.c @@ -163,17 +163,29 @@ void bdrv_graph_wrlock(BlockDriverState *bs) void bdrv_graph_wrunlock(void) { GLOBAL_STATE_CODE(); - QEMU_LOCK_GUARD(&aio_context_list_lock); assert(qatomic_read(&has_writer)); + WITH_QEMU_LOCK_GUARD(&aio_context_list_lock) { + /* + * No need for memory barriers, this works in pair with + * the slow path of rdlock() and both take the lock. + */ + qatomic_store_release(&has_writer, 0); + + /* Wake up all coroutines that are waiting to read the graph */ + qemu_co_enter_all(&reader_queue, &aio_context_list_lock); + } + /* - * No need for memory barriers, this works in pair with - * the slow path of rdlock() and both take the lock. + * Run any BHs that were scheduled during the wrlock section and that + * callers might expect to have finished (in particular, this is important + * for bdrv_schedule_unref()). + * + * Do this only after restarting coroutines so that nested event loops in + * BHs don't deadlock if their condition relies on the coroutine making + * progress. */ - qatomic_store_release(&has_writer, 0); - - /* Wake up all coroutine that are waiting to read the graph */ - qemu_co_enter_all(&reader_queue, &aio_context_list_lock); + aio_bh_poll(qemu_get_aio_context()); } void coroutine_fn bdrv_graph_co_rdlock(void) diff --git a/include/block/block-global-state.h b/include/block/block-global-state.h index f347199..e570799 100644 --- a/include/block/block-global-state.h +++ b/include/block/block-global-state.h @@ -224,6 +224,7 @@ void bdrv_img_create(const char *filename, const char *fmt, void bdrv_ref(BlockDriverState *bs); void no_coroutine_fn bdrv_unref(BlockDriverState *bs); void coroutine_fn no_co_wrapper bdrv_co_unref(BlockDriverState *bs); +void GRAPH_WRLOCK bdrv_schedule_unref(BlockDriverState *bs); void bdrv_unref_child(BlockDriverState *parent, BdrvChild *child); BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs, BlockDriverState *child_bs, diff --git a/tests/qemu-iotests/051.pc.out b/tests/qemu-iotests/051.pc.out index 4d4af5a..7e10c5f 100644 --- a/tests/qemu-iotests/051.pc.out +++ b/tests/qemu-iotests/051.pc.out @@ -169,11 +169,11 @@ QEMU_PROG: -device scsi-hd,drive=disk: Device needs media, but drive is empty Testing: -drive file=TEST_DIR/t.qcow2,if=none,node-name=disk -object iothread,id=thread0 -device virtio-scsi,iothread=thread0,id=virtio-scsi0 -device scsi-hd,bus=virtio-scsi0.0,drive=disk,share-rw=on -device ide-hd,drive=disk,share-rw=on QEMU X.Y.Z monitor - type 'help' for more information -QEMU_PROG: -device ide-hd,drive=disk,share-rw=on: Cannot change iothread of active block backend +(qemu) QEMU_PROG: -device ide-hd,drive=disk,share-rw=on: Cannot change iothread of active block backend Testing: -drive file=TEST_DIR/t.qcow2,if=none,node-name=disk -object iothread,id=thread0 -device virtio-scsi,iothread=thread0,id=virtio-scsi0 -device scsi-hd,bus=virtio-scsi0.0,drive=disk,share-rw=on -device virtio-blk-pci,drive=disk,share-rw=on QEMU X.Y.Z monitor - type 'help' for more information -QEMU_PROG: -device virtio-blk-pci,drive=disk,share-rw=on: Cannot change iothread of active block backend +(qemu) QEMU_PROG: -device virtio-blk-pci,drive=disk,share-rw=on: Cannot change iothread of active block backend Testing: -drive file=TEST_DIR/t.qcow2,if=none,node-name=disk -object iothread,id=thread0 -device virtio-scsi,iothread=thread0,id=virtio-scsi0 -device scsi-hd,bus=virtio-scsi0.0,drive=disk,share-rw=on -device lsi53c895a,id=lsi0 -device scsi-hd,bus=lsi0.0,drive=disk,share-rw=on QEMU X.Y.Z monitor - type 'help' for more information @@ -185,7 +185,7 @@ QEMU X.Y.Z monitor - type 'help' for more information Testing: -drive file=TEST_DIR/t.qcow2,if=none,node-name=disk -object iothread,id=thread0 -device virtio-scsi,iothread=thread0,id=virtio-scsi0 -device scsi-hd,bus=virtio-scsi0.0,drive=disk,share-rw=on -device virtio-blk-pci,drive=disk,iothread=thread0,share-rw=on QEMU X.Y.Z monitor - type 'help' for more information -QEMU_PROG: -device virtio-blk-pci,drive=disk,iothread=thread0,share-rw=on: Cannot change iothread of active block backend +(qemu) QEMU_PROG: -device virtio-blk-pci,drive=disk,iothread=thread0,share-rw=on: Cannot change iothread of active block backend Testing: -drive file=TEST_DIR/t.qcow2,if=none,node-name=disk -object iothread,id=thread0 -device virtio-scsi,iothread=thread0,id=virtio-scsi0 -device scsi-hd,bus=virtio-scsi0.0,drive=disk,share-rw=on -device virtio-scsi,id=virtio-scsi1,iothread=thread0 -device scsi-hd,bus=virtio-scsi1.0,drive=disk,share-rw=on QEMU X.Y.Z monitor - type 'help' for more information -- cgit v1.1 From de90329889b4769c7d3ef519d103b7bcf454d6c7 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:05 +0200 Subject: block-coroutine-wrapper: Add no_co_wrapper_bdrv_wrlock functions Add a new wrapper type for GRAPH_WRLOCK functions that should be called from coroutine context. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-7-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- include/block/block-common.h | 4 ++++ scripts/block-coroutine-wrapper.py | 11 +++++++++++ 2 files changed, 15 insertions(+) diff --git a/include/block/block-common.h b/include/block/block-common.h index df5ffc8..3bbc5d9 100644 --- a/include/block/block-common.h +++ b/include/block/block-common.h @@ -66,10 +66,14 @@ * function. The coroutine yields after scheduling the BH and is reentered when * the wrapped function returns. * + * A no_co_wrapper_bdrv_wrlock function is a no_co_wrapper function that + * automatically takes the graph wrlock when calling the wrapped function. + * * If the first parameter of the function is a BlockDriverState, BdrvChild or * BlockBackend pointer, the AioContext lock for it is taken in the wrapper. */ #define no_co_wrapper +#define no_co_wrapper_bdrv_wrlock #include "block/blockjob.h" diff --git a/scripts/block-coroutine-wrapper.py b/scripts/block-coroutine-wrapper.py index d4a183d..fa01c06 100644 --- a/scripts/block-coroutine-wrapper.py +++ b/scripts/block-coroutine-wrapper.py @@ -71,10 +71,13 @@ class FuncDecl: self.args = [ParamDecl(arg.strip()) for arg in args.split(',')] self.create_only_co = 'mixed' not in variant self.graph_rdlock = 'bdrv_rdlock' in variant + self.graph_wrlock = 'bdrv_wrlock' in variant self.wrapper_type = wrapper_type if wrapper_type == 'co': + if self.graph_wrlock: + raise ValueError(f"co function can't be wrlock: {self.name}") subsystem, subname = self.name.split('_', 1) self.target_name = f'{subsystem}_co_{subname}' else: @@ -250,6 +253,12 @@ def gen_no_co_wrapper(func: FuncDecl) -> str: name = func.target_name struct_name = func.struct_name + graph_lock='' + graph_unlock='' + if func.graph_wrlock: + graph_lock=' bdrv_graph_wrlock(NULL);' + graph_unlock=' bdrv_graph_wrunlock();' + return f"""\ /* * Wrappers for {name} @@ -266,9 +275,11 @@ static void {name}_bh(void *opaque) {struct_name} *s = opaque; AioContext *ctx = {func.gen_ctx('s->')}; +{graph_lock} aio_context_acquire(ctx); {func.get_result}{name}({ func.gen_list('s->{name}') }); aio_context_release(ctx); +{graph_unlock} aio_co_wake(s->co); }} -- cgit v1.1 From d21843491ac0edca0963d35306b31e17d70e017f Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:06 +0200 Subject: block-coroutine-wrapper: Allow arbitrary parameter names Don't assume specific parameter names like 'bs' or 'blk' in the generated code, but use the actual name. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-8-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- scripts/block-coroutine-wrapper.py | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/scripts/block-coroutine-wrapper.py b/scripts/block-coroutine-wrapper.py index fa01c06..685d0b4 100644 --- a/scripts/block-coroutine-wrapper.py +++ b/scripts/block-coroutine-wrapper.py @@ -105,12 +105,13 @@ class FuncDecl: def gen_ctx(self, prefix: str = '') -> str: t = self.args[0].type + name = self.args[0].name if t == 'BlockDriverState *': - return f'bdrv_get_aio_context({prefix}bs)' + return f'bdrv_get_aio_context({prefix}{name})' elif t == 'BdrvChild *': - return f'bdrv_get_aio_context({prefix}child->bs)' + return f'bdrv_get_aio_context({prefix}{name}->bs)' elif t == 'BlockBackend *': - return f'blk_get_aio_context({prefix}blk)' + return f'blk_get_aio_context({prefix}{name})' else: return 'qemu_get_aio_context()' -- cgit v1.1 From ad29eb3ddc6ca0081a4d6fa8620ec2b8053e98b9 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:07 +0200 Subject: block: Mark bdrv_replace_child_noperm() GRAPH_WRLOCK Instead of taking the writer lock internally, require callers to already hold it when calling bdrv_replace_child_noperm(). These callers will typically already hold the graph lock once the locking work is completed, which means that they can't call functions that take it internally. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-9-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/block.c b/block.c index c8ac7cf..61856f5 100644 --- a/block.c +++ b/block.c @@ -91,8 +91,9 @@ static BlockDriverState *bdrv_open_inherit(const char *filename, static bool bdrv_recurse_has_child(BlockDriverState *bs, BlockDriverState *child); -static void bdrv_replace_child_noperm(BdrvChild *child, - BlockDriverState *new_bs); +static void GRAPH_WRLOCK +bdrv_replace_child_noperm(BdrvChild *child, BlockDriverState *new_bs); + static void bdrv_remove_child(BdrvChild *child, Transaction *tran); static int bdrv_reopen_prepare(BDRVReopenState *reopen_state, @@ -2387,6 +2388,8 @@ static void bdrv_replace_child_abort(void *opaque) BlockDriverState *new_bs = s->child->bs; GLOBAL_STATE_CODE(); + bdrv_graph_wrlock(s->old_bs); + /* old_bs reference is transparently moved from @s to @s->child */ if (!s->child->bs) { /* @@ -2403,6 +2406,8 @@ static void bdrv_replace_child_abort(void *opaque) } assert(s->child->quiesced_parent); bdrv_replace_child_noperm(s->child, s->old_bs); + + bdrv_graph_wrunlock(); bdrv_unref(new_bs); } @@ -2439,7 +2444,10 @@ static void bdrv_replace_child_tran(BdrvChild *child, BlockDriverState *new_bs, if (new_bs) { bdrv_ref(new_bs); } + + bdrv_graph_wrlock(new_bs); bdrv_replace_child_noperm(child, new_bs); + bdrv_graph_wrunlock(); /* old_bs reference is transparently moved from @child to @s */ } @@ -2858,8 +2866,8 @@ uint64_t bdrv_qapi_perm_to_blk_perm(BlockPermission qapi_perm) * If @new_bs is non-NULL, the parent of @child must already be drained through * @child and the caller must hold the AioContext lock for @new_bs. */ -static void bdrv_replace_child_noperm(BdrvChild *child, - BlockDriverState *new_bs) +static void GRAPH_WRLOCK +bdrv_replace_child_noperm(BdrvChild *child, BlockDriverState *new_bs) { BlockDriverState *old_bs = child->bs; int new_bs_quiesce_counter; @@ -2894,8 +2902,6 @@ static void bdrv_replace_child_noperm(BdrvChild *child, assert(bdrv_get_aio_context(old_bs) == bdrv_get_aio_context(new_bs)); } - /* TODO Pull this up into the callers to avoid polling here */ - bdrv_graph_wrlock(new_bs); if (old_bs) { if (child->klass->detach) { child->klass->detach(child); @@ -2911,7 +2917,6 @@ static void bdrv_replace_child_noperm(BdrvChild *child, child->klass->attach(child); } } - bdrv_graph_wrunlock(); /* * If the parent was drained through this BdrvChild previously, but new_bs @@ -2952,7 +2957,10 @@ static void bdrv_attach_child_common_abort(void *opaque) BlockDriverState *bs = s->child->bs; GLOBAL_STATE_CODE(); + + bdrv_graph_wrlock(NULL); bdrv_replace_child_noperm(s->child, NULL); + bdrv_graph_wrunlock(); if (bdrv_get_aio_context(bs) != s->old_child_ctx) { bdrv_try_change_aio_context(bs, s->old_child_ctx, NULL, &error_abort); @@ -3080,8 +3088,10 @@ static BdrvChild *bdrv_attach_child_common(BlockDriverState *child_bs, * a problem, we already did this), but it will still poll until the parent * is fully quiesced, so it will not be negatively affected either. */ + bdrv_graph_wrlock(child_bs); bdrv_parent_drained_begin_single(new_child); bdrv_replace_child_noperm(new_child, child_bs); + bdrv_graph_wrunlock(); BdrvAttachChildCommonState *s = g_new(BdrvAttachChildCommonState, 1); *s = (BdrvAttachChildCommonState) { @@ -3225,7 +3235,9 @@ void bdrv_root_unref_child(BdrvChild *child) BlockDriverState *child_bs = child->bs; GLOBAL_STATE_CODE(); + bdrv_graph_wrlock(NULL); bdrv_replace_child_noperm(child, NULL); + bdrv_graph_wrunlock(); bdrv_child_free(child); if (child_bs) { -- cgit v1.1 From 2f64e1fc57f1a275637ff6c34cb1a7207dc9e8c8 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:08 +0200 Subject: block: Mark bdrv_replace_child_tran() GRAPH_WRLOCK Instead of taking the writer lock internally, require callers to already hold it when calling bdrv_replace_child_tran(). These callers will typically already hold the graph lock once the locking work is completed, which means that they can't call functions that take it internally. While a graph lock is held, polling is not allowed. Therefore draining the necessary nodes can no longer be done in bdrv_remove_child() and bdrv_replace_node_noperm(), but the callers must already make sure that they are drained. Note that the transaction callbacks still take the lock internally, so tran_finalize() must be called without the lock held. This is because bdrv_append() also calls bdrv_attach_child_noperm(), which currently requires to be called unlocked. Once it changes, the transaction callbacks can be changed, too. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-10-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block.c | 78 ++++++++++++++++++++++++++++++++++++++++++----------------------- 1 file changed, 50 insertions(+), 28 deletions(-) diff --git a/block.c b/block.c index 61856f5..0973b91 100644 --- a/block.c +++ b/block.c @@ -94,7 +94,8 @@ static bool bdrv_recurse_has_child(BlockDriverState *bs, static void GRAPH_WRLOCK bdrv_replace_child_noperm(BdrvChild *child, BlockDriverState *new_bs); -static void bdrv_remove_child(BdrvChild *child, Transaction *tran); +static void GRAPH_WRLOCK +bdrv_remove_child(BdrvChild *child, Transaction *tran); static int bdrv_reopen_prepare(BDRVReopenState *reopen_state, BlockReopenQueue *queue, @@ -2427,8 +2428,9 @@ static TransactionActionDrv bdrv_replace_child_drv = { * * The function doesn't update permissions, caller is responsible for this. */ -static void bdrv_replace_child_tran(BdrvChild *child, BlockDriverState *new_bs, - Transaction *tran) +static void GRAPH_WRLOCK +bdrv_replace_child_tran(BdrvChild *child, BlockDriverState *new_bs, + Transaction *tran) { BdrvReplaceChildState *s = g_new(BdrvReplaceChildState, 1); @@ -2445,9 +2447,7 @@ static void bdrv_replace_child_tran(BdrvChild *child, BlockDriverState *new_bs, bdrv_ref(new_bs); } - bdrv_graph_wrlock(new_bs); bdrv_replace_child_noperm(child, new_bs); - bdrv_graph_wrunlock(); /* old_bs reference is transparently moved from @child to @s */ } @@ -3439,8 +3439,14 @@ static int bdrv_set_file_or_backing_noperm(BlockDriverState *parent_bs, } if (child) { + bdrv_drained_begin(child->bs); + bdrv_graph_wrlock(NULL); + bdrv_unset_inherits_from(parent_bs, child, tran); bdrv_remove_child(child, tran); + + bdrv_graph_wrunlock(); + bdrv_drained_end(child->bs); } if (!child_bs) { @@ -5133,7 +5139,7 @@ void bdrv_close_all(void) assert(QTAILQ_EMPTY(&all_bdrv_states)); } -static bool should_update_child(BdrvChild *c, BlockDriverState *to) +static bool GRAPH_RDLOCK should_update_child(BdrvChild *c, BlockDriverState *to) { GQueue *queue; GHashTable *found; @@ -5222,45 +5228,41 @@ static TransactionActionDrv bdrv_remove_child_drv = { .commit = bdrv_remove_child_commit, }; -/* Function doesn't update permissions, caller is responsible for this. */ -static void bdrv_remove_child(BdrvChild *child, Transaction *tran) +/* + * Function doesn't update permissions, caller is responsible for this. + * + * @child->bs (if non-NULL) must be drained. + */ +static void GRAPH_WRLOCK bdrv_remove_child(BdrvChild *child, Transaction *tran) { if (!child) { return; } if (child->bs) { - BlockDriverState *bs = child->bs; - bdrv_drained_begin(bs); + assert(child->quiesced_parent); bdrv_replace_child_tran(child, NULL, tran); - bdrv_drained_end(bs); } tran_add(tran, &bdrv_remove_child_drv, child); } -static void undrain_on_clean_cb(void *opaque) -{ - bdrv_drained_end(opaque); -} - -static TransactionActionDrv undrain_on_clean = { - .clean = undrain_on_clean_cb, -}; - -static int bdrv_replace_node_noperm(BlockDriverState *from, - BlockDriverState *to, - bool auto_skip, Transaction *tran, - Error **errp) +/* + * Both @from and @to (if non-NULL) must be drained. @to must be kept drained + * until the transaction is completed. + */ +static int GRAPH_WRLOCK +bdrv_replace_node_noperm(BlockDriverState *from, + BlockDriverState *to, + bool auto_skip, Transaction *tran, + Error **errp) { BdrvChild *c, *next; GLOBAL_STATE_CODE(); - bdrv_drained_begin(from); - bdrv_drained_begin(to); - tran_add(tran, &undrain_on_clean, from); - tran_add(tran, &undrain_on_clean, to); + assert(from->quiesce_counter); + assert(to->quiesce_counter); QLIST_FOREACH_SAFE(c, &from->parents, next_parent, next) { assert(c->bs == from); @@ -5323,6 +5325,9 @@ static int bdrv_replace_node_common(BlockDriverState *from, assert(qemu_get_current_aio_context() == qemu_get_aio_context()); assert(bdrv_get_aio_context(from) == bdrv_get_aio_context(to)); bdrv_drained_begin(from); + bdrv_drained_begin(to); + + bdrv_graph_wrlock(to); /* * Do the replacement without permission update. @@ -5336,6 +5341,7 @@ static int bdrv_replace_node_common(BlockDriverState *from, } if (detach_subchain) { + /* to_cow_parent is already drained because from is drained */ bdrv_remove_child(bdrv_filter_or_cow_child(to_cow_parent), tran); } @@ -5350,8 +5356,10 @@ static int bdrv_replace_node_common(BlockDriverState *from, ret = 0; out: + bdrv_graph_wrunlock(); tran_finalize(tran, ret); + bdrv_drained_end(to); bdrv_drained_end(from); bdrv_unref(from); @@ -5395,6 +5403,7 @@ int bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top, BdrvChild *child; Transaction *tran = tran_new(); AioContext *old_context, *new_context = NULL; + bool drained = false; GLOBAL_STATE_CODE(); @@ -5423,7 +5432,13 @@ int bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top, aio_context_acquire(new_context); } + bdrv_drained_begin(bs_new); + bdrv_drained_begin(bs_top); + drained = true; + + bdrv_graph_wrlock(bs_new); ret = bdrv_replace_node_noperm(bs_top, bs_new, true, tran, errp); + bdrv_graph_wrunlock(); if (ret < 0) { goto out; } @@ -5436,6 +5451,11 @@ out: bdrv_refresh_limits(bs_top, NULL, NULL); bdrv_graph_rdunlock_main_loop(); + if (drained) { + bdrv_drained_end(bs_top); + bdrv_drained_end(bs_new); + } + if (new_context && old_context != new_context) { aio_context_release(new_context); aio_context_acquire(old_context); @@ -5458,6 +5478,7 @@ int bdrv_replace_child_bs(BdrvChild *child, BlockDriverState *new_bs, bdrv_ref(old_bs); bdrv_drained_begin(old_bs); bdrv_drained_begin(new_bs); + bdrv_graph_wrlock(new_bs); bdrv_replace_child_tran(child, new_bs, tran); @@ -5465,6 +5486,7 @@ int bdrv_replace_child_bs(BdrvChild *child, BlockDriverState *new_bs, refresh_list = g_slist_prepend(refresh_list, new_bs); ret = bdrv_list_refresh_perms(refresh_list, NULL, tran, errp); + bdrv_graph_wrunlock(); tran_finalize(tran, ret); -- cgit v1.1 From 7d4ca9d25bce7e7cd3f1188ec5e5c46c649310c7 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:09 +0200 Subject: block: Mark bdrv_attach_child_common() GRAPH_WRLOCK Instead of taking the writer lock internally, require callers to already hold it when calling bdrv_attach_child_common(). These callers will typically already hold the graph lock once the locking work is completed, which means that they can't call functions that take it internally. Note that the transaction callbacks still take the lock internally, so tran_finalize() must be called without the lock held. This is because bdrv_append() also calls bdrv_replace_node_noperm(), which currently requires the transaction callbacks to be called unlocked. In the next step, both of them can be switched to locked tran_finalize() calls together. Signed-off-by: Kevin Wolf Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-11-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block.c | 133 ++++++++++++++++++++++++++++++++++++--------------------- block/stream.c | 20 ++++++--- 2 files changed, 100 insertions(+), 53 deletions(-) diff --git a/block.c b/block.c index 0973b91..f6e7cf4 100644 --- a/block.c +++ b/block.c @@ -3004,13 +3004,14 @@ static TransactionActionDrv bdrv_attach_child_common_drv = { * @child_bs can move to a different AioContext in this function. Callers must * make sure that their AioContext locking is still correct after this. */ -static BdrvChild *bdrv_attach_child_common(BlockDriverState *child_bs, - const char *child_name, - const BdrvChildClass *child_class, - BdrvChildRole child_role, - uint64_t perm, uint64_t shared_perm, - void *opaque, - Transaction *tran, Error **errp) +static BdrvChild * GRAPH_WRLOCK +bdrv_attach_child_common(BlockDriverState *child_bs, + const char *child_name, + const BdrvChildClass *child_class, + BdrvChildRole child_role, + uint64_t perm, uint64_t shared_perm, + void *opaque, + Transaction *tran, Error **errp) { BdrvChild *new_child; AioContext *parent_ctx, *new_child_ctx; @@ -3088,10 +3089,8 @@ static BdrvChild *bdrv_attach_child_common(BlockDriverState *child_bs, * a problem, we already did this), but it will still poll until the parent * is fully quiesced, so it will not be negatively affected either. */ - bdrv_graph_wrlock(child_bs); bdrv_parent_drained_begin_single(new_child); bdrv_replace_child_noperm(new_child, child_bs); - bdrv_graph_wrunlock(); BdrvAttachChildCommonState *s = g_new(BdrvAttachChildCommonState, 1); *s = (BdrvAttachChildCommonState) { @@ -3116,13 +3115,14 @@ static BdrvChild *bdrv_attach_child_common(BlockDriverState *child_bs, * @child_bs can move to a different AioContext in this function. Callers must * make sure that their AioContext locking is still correct after this. */ -static BdrvChild *bdrv_attach_child_noperm(BlockDriverState *parent_bs, - BlockDriverState *child_bs, - const char *child_name, - const BdrvChildClass *child_class, - BdrvChildRole child_role, - Transaction *tran, - Error **errp) +static BdrvChild * GRAPH_WRLOCK +bdrv_attach_child_noperm(BlockDriverState *parent_bs, + BlockDriverState *child_bs, + const char *child_name, + const BdrvChildClass *child_class, + BdrvChildRole child_role, + Transaction *tran, + Error **errp) { uint64_t perm, shared_perm; @@ -3167,6 +3167,8 @@ BdrvChild *bdrv_root_attach_child(BlockDriverState *child_bs, GLOBAL_STATE_CODE(); + bdrv_graph_wrlock(child_bs); + child = bdrv_attach_child_common(child_bs, child_name, child_class, child_role, perm, shared_perm, opaque, tran, errp); @@ -3178,6 +3180,7 @@ BdrvChild *bdrv_root_attach_child(BlockDriverState *child_bs, ret = bdrv_refresh_perms(child_bs, tran, errp); out: + bdrv_graph_wrunlock(); tran_finalize(tran, ret); bdrv_unref(child_bs); @@ -3209,6 +3212,8 @@ BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs, GLOBAL_STATE_CODE(); + bdrv_graph_wrlock(child_bs); + child = bdrv_attach_child_noperm(parent_bs, child_bs, child_name, child_class, child_role, tran, errp); if (!child) { @@ -3222,6 +3227,7 @@ BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs, } out: + bdrv_graph_wrunlock(); tran_finalize(tran, ret); bdrv_unref(child_bs); @@ -3379,16 +3385,20 @@ static BdrvChildRole bdrv_backing_role(BlockDriverState *bs) * Sets the bs->backing or bs->file link of a BDS. A new reference is created; * callers which don't need their own reference any more must call bdrv_unref(). * + * If the respective child is already present (i.e. we're detaching a node), + * that child node must be drained. + * * Function doesn't update permissions, caller is responsible for this. * * The caller must hold the AioContext lock for @child_bs. Both @parent_bs and * @child_bs can move to a different AioContext in this function. Callers must * make sure that their AioContext locking is still correct after this. */ -static int bdrv_set_file_or_backing_noperm(BlockDriverState *parent_bs, - BlockDriverState *child_bs, - bool is_backing, - Transaction *tran, Error **errp) +static int GRAPH_WRLOCK +bdrv_set_file_or_backing_noperm(BlockDriverState *parent_bs, + BlockDriverState *child_bs, + bool is_backing, + Transaction *tran, Error **errp) { bool update_inherits_from = bdrv_inherits_from_recursive(child_bs, parent_bs); @@ -3439,14 +3449,9 @@ static int bdrv_set_file_or_backing_noperm(BlockDriverState *parent_bs, } if (child) { - bdrv_drained_begin(child->bs); - bdrv_graph_wrlock(NULL); - + assert(child->bs->quiesce_counter); bdrv_unset_inherits_from(parent_bs, child, tran); bdrv_remove_child(child, tran); - - bdrv_graph_wrunlock(); - bdrv_drained_end(child->bs); } if (!child_bs) { @@ -3471,9 +3476,7 @@ static int bdrv_set_file_or_backing_noperm(BlockDriverState *parent_bs, } out: - bdrv_graph_rdlock_main_loop(); bdrv_refresh_limits(parent_bs, tran, NULL); - bdrv_graph_rdunlock_main_loop(); return 0; } @@ -3482,10 +3485,14 @@ out: * The caller must hold the AioContext lock for @backing_hd. Both @bs and * @backing_hd can move to a different AioContext in this function. Callers must * make sure that their AioContext locking is still correct after this. + * + * If a backing child is already present (i.e. we're detaching a node), that + * child node must be drained. */ -static int bdrv_set_backing_noperm(BlockDriverState *bs, - BlockDriverState *backing_hd, - Transaction *tran, Error **errp) +static int GRAPH_WRLOCK +bdrv_set_backing_noperm(BlockDriverState *bs, + BlockDriverState *backing_hd, + Transaction *tran, Error **errp) { GLOBAL_STATE_CODE(); return bdrv_set_file_or_backing_noperm(bs, backing_hd, true, tran, errp); @@ -3500,6 +3507,10 @@ int bdrv_set_backing_hd_drained(BlockDriverState *bs, GLOBAL_STATE_CODE(); assert(bs->quiesce_counter > 0); + if (bs->backing) { + assert(bs->backing->bs->quiesce_counter > 0); + } + bdrv_graph_wrlock(backing_hd); ret = bdrv_set_backing_noperm(bs, backing_hd, tran, errp); if (ret < 0) { @@ -3508,6 +3519,7 @@ int bdrv_set_backing_hd_drained(BlockDriverState *bs, ret = bdrv_refresh_perms(bs, tran, errp); out: + bdrv_graph_wrunlock(); tran_finalize(tran, ret); return ret; } @@ -3515,12 +3527,15 @@ out: int bdrv_set_backing_hd(BlockDriverState *bs, BlockDriverState *backing_hd, Error **errp) { + BlockDriverState *drain_bs = bs->backing ? bs->backing->bs : bs; int ret; GLOBAL_STATE_CODE(); - bdrv_drained_begin(bs); + bdrv_ref(drain_bs); + bdrv_drained_begin(drain_bs); ret = bdrv_set_backing_hd_drained(bs, backing_hd, errp); - bdrv_drained_end(bs); + bdrv_drained_end(drain_bs); + bdrv_unref(drain_bs); return ret; } @@ -4597,6 +4612,7 @@ int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp) abort: tran_abort(tran); + QTAILQ_FOREACH_SAFE(bs_entry, bs_queue, entry, next) { if (bs_entry->prepared) { ctx = bdrv_get_aio_context(bs_entry->state.bs); @@ -4746,6 +4762,11 @@ static int bdrv_reopen_parse_file_or_backing(BDRVReopenState *reopen_state, reopen_state->old_file_bs = old_child_bs; } + if (old_child_bs) { + bdrv_ref(old_child_bs); + bdrv_drained_begin(old_child_bs); + } + old_ctx = bdrv_get_aio_context(bs); ctx = bdrv_get_aio_context(new_child_bs); if (old_ctx != ctx) { @@ -4753,14 +4774,23 @@ static int bdrv_reopen_parse_file_or_backing(BDRVReopenState *reopen_state, aio_context_acquire(ctx); } + bdrv_graph_wrlock(new_child_bs); + ret = bdrv_set_file_or_backing_noperm(bs, new_child_bs, is_backing, tran, errp); + bdrv_graph_wrunlock(); + if (old_ctx != ctx) { aio_context_release(ctx); aio_context_acquire(old_ctx); } + if (old_child_bs) { + bdrv_drained_end(old_child_bs); + bdrv_unref(old_child_bs); + } + return ret; } @@ -5403,13 +5433,28 @@ int bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top, BdrvChild *child; Transaction *tran = tran_new(); AioContext *old_context, *new_context = NULL; - bool drained = false; GLOBAL_STATE_CODE(); assert(!bs_new->backing); old_context = bdrv_get_aio_context(bs_top); + bdrv_drained_begin(bs_top); + + /* + * bdrv_drained_begin() requires that only the AioContext of the drained + * node is locked, and at this point it can still differ from the AioContext + * of bs_top. + */ + new_context = bdrv_get_aio_context(bs_new); + aio_context_release(old_context); + aio_context_acquire(new_context); + bdrv_drained_begin(bs_new); + aio_context_release(new_context); + aio_context_acquire(old_context); + new_context = NULL; + + bdrv_graph_wrlock(bs_top); child = bdrv_attach_child_noperm(bs_new, bs_top, "backing", &child_of_bds, bdrv_backing_role(bs_new), @@ -5420,10 +5465,9 @@ int bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top, } /* - * bdrv_attach_child_noperm could change the AioContext of bs_top. - * bdrv_replace_node_noperm calls bdrv_drained_begin, so let's temporarily - * hold the new AioContext, since bdrv_drained_begin calls BDRV_POLL_WHILE - * that assumes the new lock is taken. + * bdrv_attach_child_noperm could change the AioContext of bs_top and + * bs_new, but at least they are in the same AioContext now. This is the + * AioContext that we need to lock for the rest of the function. */ new_context = bdrv_get_aio_context(bs_top); @@ -5432,29 +5476,22 @@ int bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top, aio_context_acquire(new_context); } - bdrv_drained_begin(bs_new); - bdrv_drained_begin(bs_top); - drained = true; - - bdrv_graph_wrlock(bs_new); ret = bdrv_replace_node_noperm(bs_top, bs_new, true, tran, errp); - bdrv_graph_wrunlock(); if (ret < 0) { goto out; } ret = bdrv_refresh_perms(bs_new, tran, errp); out: + bdrv_graph_wrunlock(); tran_finalize(tran, ret); bdrv_graph_rdlock_main_loop(); bdrv_refresh_limits(bs_top, NULL, NULL); bdrv_graph_rdunlock_main_loop(); - if (drained) { - bdrv_drained_end(bs_top); - bdrv_drained_end(bs_new); - } + bdrv_drained_end(bs_top); + bdrv_drained_end(bs_new); if (new_context && old_context != new_context) { aio_context_release(new_context); diff --git a/block/stream.c b/block/stream.c index e522bbd..e4da214 100644 --- a/block/stream.c +++ b/block/stream.c @@ -54,6 +54,7 @@ static int stream_prepare(Job *job) { StreamBlockJob *s = container_of(job, StreamBlockJob, common.job); BlockDriverState *unfiltered_bs = bdrv_skip_filters(s->target_bs); + BlockDriverState *unfiltered_bs_cow = bdrv_cow_bs(unfiltered_bs); BlockDriverState *base; BlockDriverState *unfiltered_base; Error *local_err = NULL; @@ -64,13 +65,18 @@ static int stream_prepare(Job *job) s->cor_filter_bs = NULL; /* - * bdrv_set_backing_hd() requires that unfiltered_bs is drained. Drain - * already here and use bdrv_set_backing_hd_drained() instead because - * the polling during drained_begin() might change the graph, and if we do - * this only later, we may end up working with the wrong base node (or it - * might even have gone away by the time we want to use it). + * bdrv_set_backing_hd() requires that the unfiltered_bs and the COW child + * of unfiltered_bs is drained. Drain already here and use + * bdrv_set_backing_hd_drained() instead because the polling during + * drained_begin() might change the graph, and if we do this only later, we + * may end up working with the wrong base node (or it might even have gone + * away by the time we want to use it). */ bdrv_drained_begin(unfiltered_bs); + if (unfiltered_bs_cow) { + bdrv_ref(unfiltered_bs_cow); + bdrv_drained_begin(unfiltered_bs_cow); + } base = bdrv_filter_or_cow_bs(s->above_base); unfiltered_base = bdrv_skip_filters(base); @@ -100,6 +106,10 @@ static int stream_prepare(Job *job) } out: + if (unfiltered_bs_cow) { + bdrv_drained_end(unfiltered_bs_cow); + bdrv_unref(unfiltered_bs_cow); + } bdrv_drained_end(unfiltered_bs); return ret; } -- cgit v1.1 From 5661a00d40a59c28796a59c9df55d03efe8c56fc Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:10 +0200 Subject: block: Call transaction callbacks with lock held In previous patches, we changed some transactionable functions to be marked as GRAPH_WRLOCK, but required that tran_finalize() is still called without the lock. This was because all callbacks that can be in the same transaction need to follow the same convention. Now that we don't have conflicting requirements any more, we can switch all of the transaction callbacks to be declared GRAPH_WRLOCK, too, and call tran_finalize() with the lock held. Document for each of these transactionable functions that the lock needs to be held when completing the transaction, and make sure that all callers down to the place where the transaction is finalised actually have the writer lock. Signed-off-by: Kevin Wolf Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-12-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block.c | 61 ++++++++++++++++++++++++++++++++++++++++++++----------------- 1 file changed, 44 insertions(+), 17 deletions(-) diff --git a/block.c b/block.c index f6e7cf4..f06de58 100644 --- a/block.c +++ b/block.c @@ -2375,21 +2375,21 @@ typedef struct BdrvReplaceChildState { BlockDriverState *old_bs; } BdrvReplaceChildState; -static void bdrv_replace_child_commit(void *opaque) +static void GRAPH_WRLOCK bdrv_replace_child_commit(void *opaque) { BdrvReplaceChildState *s = opaque; GLOBAL_STATE_CODE(); - bdrv_unref(s->old_bs); + bdrv_schedule_unref(s->old_bs); } -static void bdrv_replace_child_abort(void *opaque) +static void GRAPH_WRLOCK bdrv_replace_child_abort(void *opaque) { BdrvReplaceChildState *s = opaque; BlockDriverState *new_bs = s->child->bs; GLOBAL_STATE_CODE(); - bdrv_graph_wrlock(s->old_bs); + assert_bdrv_graph_writable(); /* old_bs reference is transparently moved from @s to @s->child */ if (!s->child->bs) { @@ -2408,7 +2408,6 @@ static void bdrv_replace_child_abort(void *opaque) assert(s->child->quiesced_parent); bdrv_replace_child_noperm(s->child, s->old_bs); - bdrv_graph_wrunlock(); bdrv_unref(new_bs); } @@ -2426,6 +2425,9 @@ static TransactionActionDrv bdrv_replace_child_drv = { * Both @child->bs and @new_bs (if non-NULL) must be drained. @new_bs must be * kept drained until the transaction is completed. * + * After calling this function, the transaction @tran may only be completed + * while holding a writer lock for the graph. + * * The function doesn't update permissions, caller is responsible for this. */ static void GRAPH_WRLOCK @@ -2951,16 +2953,15 @@ typedef struct BdrvAttachChildCommonState { AioContext *old_child_ctx; } BdrvAttachChildCommonState; -static void bdrv_attach_child_common_abort(void *opaque) +static void GRAPH_WRLOCK bdrv_attach_child_common_abort(void *opaque) { BdrvAttachChildCommonState *s = opaque; BlockDriverState *bs = s->child->bs; GLOBAL_STATE_CODE(); + assert_bdrv_graph_writable(); - bdrv_graph_wrlock(NULL); bdrv_replace_child_noperm(s->child, NULL); - bdrv_graph_wrunlock(); if (bdrv_get_aio_context(bs) != s->old_child_ctx) { bdrv_try_change_aio_context(bs, s->old_child_ctx, NULL, &error_abort); @@ -2984,7 +2985,7 @@ static void bdrv_attach_child_common_abort(void *opaque) tran_commit(tran); } - bdrv_unref(bs); + bdrv_schedule_unref(bs); bdrv_child_free(s->child); } @@ -2998,6 +2999,9 @@ static TransactionActionDrv bdrv_attach_child_common_drv = { * * Function doesn't update permissions, caller is responsible for this. * + * After calling this function, the transaction @tran may only be completed + * while holding a writer lock for the graph. + * * Returns new created child. * * The caller must hold the AioContext lock for @child_bs. Both @parent_bs and @@ -3114,6 +3118,9 @@ bdrv_attach_child_common(BlockDriverState *child_bs, * The caller must hold the AioContext lock for @child_bs. Both @parent_bs and * @child_bs can move to a different AioContext in this function. Callers must * make sure that their AioContext locking is still correct after this. + * + * After calling this function, the transaction @tran may only be completed + * while holding a writer lock for the graph. */ static BdrvChild * GRAPH_WRLOCK bdrv_attach_child_noperm(BlockDriverState *parent_bs, @@ -3180,8 +3187,8 @@ BdrvChild *bdrv_root_attach_child(BlockDriverState *child_bs, ret = bdrv_refresh_perms(child_bs, tran, errp); out: - bdrv_graph_wrunlock(); tran_finalize(tran, ret); + bdrv_graph_wrunlock(); bdrv_unref(child_bs); @@ -3227,8 +3234,8 @@ BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs, } out: - bdrv_graph_wrunlock(); tran_finalize(tran, ret); + bdrv_graph_wrunlock(); bdrv_unref(child_bs); @@ -3393,6 +3400,9 @@ static BdrvChildRole bdrv_backing_role(BlockDriverState *bs) * The caller must hold the AioContext lock for @child_bs. Both @parent_bs and * @child_bs can move to a different AioContext in this function. Callers must * make sure that their AioContext locking is still correct after this. + * + * After calling this function, the transaction @tran may only be completed + * while holding a writer lock for the graph. */ static int GRAPH_WRLOCK bdrv_set_file_or_backing_noperm(BlockDriverState *parent_bs, @@ -3488,6 +3498,9 @@ out: * * If a backing child is already present (i.e. we're detaching a node), that * child node must be drained. + * + * After calling this function, the transaction @tran may only be completed + * while holding a writer lock for the graph. */ static int GRAPH_WRLOCK bdrv_set_backing_noperm(BlockDriverState *bs, @@ -3519,8 +3532,8 @@ int bdrv_set_backing_hd_drained(BlockDriverState *bs, ret = bdrv_refresh_perms(bs, tran, errp); out: - bdrv_graph_wrunlock(); tran_finalize(tran, ret); + bdrv_graph_wrunlock(); return ret; } @@ -4594,7 +4607,9 @@ int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp) aio_context_release(ctx); } + bdrv_graph_wrlock(NULL); tran_commit(tran); + bdrv_graph_wrunlock(); QTAILQ_FOREACH_REVERSE(bs_entry, bs_queue, entry) { BlockDriverState *bs = bs_entry->state.bs; @@ -4611,7 +4626,9 @@ int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp) goto cleanup; abort: + bdrv_graph_wrlock(NULL); tran_abort(tran); + bdrv_graph_wrunlock(); QTAILQ_FOREACH_SAFE(bs_entry, bs_queue, entry, next) { if (bs_entry->prepared) { @@ -4678,6 +4695,9 @@ int bdrv_reopen_set_read_only(BlockDriverState *bs, bool read_only, * true and reopen_state->new_backing_bs contains a pointer to the new * backing BlockDriverState (or NULL). * + * After calling this function, the transaction @tran may only be completed + * while holding a writer lock for the graph. + * * Return 0 on success, otherwise return < 0 and set @errp. * * The caller must hold the AioContext lock of @reopen_state->bs. @@ -4811,6 +4831,9 @@ static int bdrv_reopen_parse_file_or_backing(BDRVReopenState *reopen_state, * commit() for any other BDS that have been left in a prepare() state * * The caller must hold the AioContext lock of @reopen_state->bs. + * + * After calling this function, the transaction @change_child_tran may only be + * completed while holding a writer lock for the graph. */ static int bdrv_reopen_prepare(BDRVReopenState *reopen_state, BlockReopenQueue *queue, @@ -5262,6 +5285,9 @@ static TransactionActionDrv bdrv_remove_child_drv = { * Function doesn't update permissions, caller is responsible for this. * * @child->bs (if non-NULL) must be drained. + * + * After calling this function, the transaction @tran may only be completed + * while holding a writer lock for the graph. */ static void GRAPH_WRLOCK bdrv_remove_child(BdrvChild *child, Transaction *tran) { @@ -5280,6 +5306,9 @@ static void GRAPH_WRLOCK bdrv_remove_child(BdrvChild *child, Transaction *tran) /* * Both @from and @to (if non-NULL) must be drained. @to must be kept drained * until the transaction is completed. + * + * After calling this function, the transaction @tran may only be completed + * while holding a writer lock for the graph. */ static int GRAPH_WRLOCK bdrv_replace_node_noperm(BlockDriverState *from, @@ -5386,8 +5415,8 @@ static int bdrv_replace_node_common(BlockDriverState *from, ret = 0; out: - bdrv_graph_wrunlock(); tran_finalize(tran, ret); + bdrv_graph_wrunlock(); bdrv_drained_end(to); bdrv_drained_end(from); @@ -5483,12 +5512,10 @@ int bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top, ret = bdrv_refresh_perms(bs_new, tran, errp); out: - bdrv_graph_wrunlock(); tran_finalize(tran, ret); - bdrv_graph_rdlock_main_loop(); bdrv_refresh_limits(bs_top, NULL, NULL); - bdrv_graph_rdunlock_main_loop(); + bdrv_graph_wrunlock(); bdrv_drained_end(bs_top); bdrv_drained_end(bs_new); @@ -5523,10 +5550,10 @@ int bdrv_replace_child_bs(BdrvChild *child, BlockDriverState *new_bs, refresh_list = g_slist_prepend(refresh_list, new_bs); ret = bdrv_list_refresh_perms(refresh_list, NULL, tran, errp); - bdrv_graph_wrunlock(); tran_finalize(tran, ret); + bdrv_graph_wrunlock(); bdrv_drained_end(old_bs); bdrv_drained_end(new_bs); bdrv_unref(old_bs); -- cgit v1.1 From afdaeb9ea06ea641ccc4226964b8e278af5e7685 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:11 +0200 Subject: block: Mark bdrv_attach_child() GRAPH_WRLOCK Instead of taking the writer lock internally, require callers to already hold it when calling bdrv_attach_child_common(). These callers will typically already hold the graph lock once the locking work is completed, which means that they can't call functions that take it internally. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-13-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block.c | 7 +++---- block/quorum.c | 2 ++ block/replication.c | 6 ++++++ include/block/block-global-state.h | 14 ++++++++------ tests/unit/test-bdrv-drain.c | 14 ++++++++++++++ tests/unit/test-bdrv-graph-mod.c | 10 ++++++++++ 6 files changed, 43 insertions(+), 10 deletions(-) diff --git a/block.c b/block.c index f06de58..3690238 100644 --- a/block.c +++ b/block.c @@ -3219,8 +3219,6 @@ BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs, GLOBAL_STATE_CODE(); - bdrv_graph_wrlock(child_bs); - child = bdrv_attach_child_noperm(parent_bs, child_bs, child_name, child_class, child_role, tran, errp); if (!child) { @@ -3235,9 +3233,8 @@ BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs, out: tran_finalize(tran, ret); - bdrv_graph_wrunlock(); - bdrv_unref(child_bs); + bdrv_schedule_unref(child_bs); return ret < 0 ? NULL : child; } @@ -3758,11 +3755,13 @@ BdrvChild *bdrv_open_child(const char *filename, return NULL; } + bdrv_graph_wrlock(NULL); ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); child = bdrv_attach_child(parent, bs, bdref_key, child_class, child_role, errp); aio_context_release(ctx); + bdrv_graph_wrunlock(); return child; } diff --git a/block/quorum.c b/block/quorum.c index f28758c..def0539 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -1094,8 +1094,10 @@ static void quorum_add_child(BlockDriverState *bs, BlockDriverState *child_bs, /* We can safely add the child now */ bdrv_ref(child_bs); + bdrv_graph_wrlock(child_bs); child = bdrv_attach_child(bs, child_bs, indexstr, &child_of_bds, BDRV_CHILD_DATA, errp); + bdrv_graph_wrunlock(); if (child == NULL) { s->next_child_index--; goto out; diff --git a/block/replication.c b/block/replication.c index ea4bf1a..eec9819 100644 --- a/block/replication.c +++ b/block/replication.c @@ -542,12 +542,15 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode, return; } + bdrv_graph_wrlock(bs); + bdrv_ref(hidden_disk->bs); s->hidden_disk = bdrv_attach_child(bs, hidden_disk->bs, "hidden disk", &child_of_bds, BDRV_CHILD_DATA, &local_err); if (local_err) { error_propagate(errp, local_err); + bdrv_graph_wrunlock(); aio_context_release(aio_context); return; } @@ -558,10 +561,13 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode, BDRV_CHILD_DATA, &local_err); if (local_err) { error_propagate(errp, local_err); + bdrv_graph_wrunlock(); aio_context_release(aio_context); return; } + bdrv_graph_wrunlock(); + /* start backup job now */ error_setg(&s->blocker, "Block device is in use by internal backup job"); diff --git a/include/block/block-global-state.h b/include/block/block-global-state.h index e570799..eb12a35 100644 --- a/include/block/block-global-state.h +++ b/include/block/block-global-state.h @@ -226,12 +226,14 @@ void no_coroutine_fn bdrv_unref(BlockDriverState *bs); void coroutine_fn no_co_wrapper bdrv_co_unref(BlockDriverState *bs); void GRAPH_WRLOCK bdrv_schedule_unref(BlockDriverState *bs); void bdrv_unref_child(BlockDriverState *parent, BdrvChild *child); -BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs, - BlockDriverState *child_bs, - const char *child_name, - const BdrvChildClass *child_class, - BdrvChildRole child_role, - Error **errp); + +BdrvChild * GRAPH_WRLOCK +bdrv_attach_child(BlockDriverState *parent_bs, + BlockDriverState *child_bs, + const char *child_name, + const BdrvChildClass *child_class, + BdrvChildRole child_role, + Error **errp); bool bdrv_op_is_blocked(BlockDriverState *bs, BlockOpType op, Error **errp); void bdrv_op_block(BlockDriverState *bs, BlockOpType op, Error *reason); diff --git a/tests/unit/test-bdrv-drain.c b/tests/unit/test-bdrv-drain.c index 89c8fa6..6d33249 100644 --- a/tests/unit/test-bdrv-drain.c +++ b/tests/unit/test-bdrv-drain.c @@ -1055,8 +1055,10 @@ static void do_test_delete_by_drain(bool detach_instead_of_delete, null_bs = bdrv_open("null-co://", NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL, &error_abort); + bdrv_graph_wrlock(NULL); bdrv_attach_child(bs, null_bs, "null-child", &child_of_bds, BDRV_CHILD_DATA, &error_abort); + bdrv_graph_wrunlock(); /* This child will be the one to pass to requests through to, and * it will stall until a drain occurs */ @@ -1064,17 +1066,21 @@ static void do_test_delete_by_drain(bool detach_instead_of_delete, &error_abort); child_bs->total_sectors = 65536 >> BDRV_SECTOR_BITS; /* Takes our reference to child_bs */ + bdrv_graph_wrlock(NULL); tts->wait_child = bdrv_attach_child(bs, child_bs, "wait-child", &child_of_bds, BDRV_CHILD_DATA | BDRV_CHILD_PRIMARY, &error_abort); + bdrv_graph_wrunlock(); /* This child is just there to be deleted * (for detach_instead_of_delete == true) */ null_bs = bdrv_open("null-co://", NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL, &error_abort); + bdrv_graph_wrlock(NULL); bdrv_attach_child(bs, null_bs, "null-child", &child_of_bds, BDRV_CHILD_DATA, &error_abort); + bdrv_graph_wrunlock(); blk = blk_new(qemu_get_aio_context(), BLK_PERM_ALL, BLK_PERM_ALL); blk_insert_bs(blk, bs, &error_abort); @@ -1159,9 +1165,11 @@ static void detach_indirect_bh(void *opaque) bdrv_unref_child(data->parent_b, data->child_b); bdrv_ref(data->c); + bdrv_graph_wrlock(NULL); data->child_c = bdrv_attach_child(data->parent_b, data->c, "PB-C", &child_of_bds, BDRV_CHILD_DATA, &error_abort); + bdrv_graph_wrunlock(); } static void detach_by_parent_aio_cb(void *opaque, int ret) @@ -1258,6 +1266,7 @@ static void test_detach_indirect(bool by_parent_cb) /* Set child relationships */ bdrv_ref(b); bdrv_ref(a); + bdrv_graph_wrlock(NULL); child_b = bdrv_attach_child(parent_b, b, "PB-B", &child_of_bds, BDRV_CHILD_DATA, &error_abort); child_a = bdrv_attach_child(parent_b, a, "PB-A", &child_of_bds, @@ -1267,6 +1276,7 @@ static void test_detach_indirect(bool by_parent_cb) bdrv_attach_child(parent_a, a, "PA-A", by_parent_cb ? &child_of_bds : &detach_by_driver_cb_class, BDRV_CHILD_DATA, &error_abort); + bdrv_graph_wrunlock(); g_assert_cmpint(parent_a->refcnt, ==, 1); g_assert_cmpint(parent_b->refcnt, ==, 1); @@ -1685,6 +1695,7 @@ static void test_drop_intermediate_poll(void) * Establish the chain last, so the chain links are the first * elements in the BDS.parents lists */ + bdrv_graph_wrlock(NULL); for (i = 0; i < 3; i++) { if (i) { /* Takes the reference to chain[i - 1] */ @@ -1692,6 +1703,7 @@ static void test_drop_intermediate_poll(void) &chain_child_class, BDRV_CHILD_COW, &error_abort); } } + bdrv_graph_wrunlock(); job = block_job_create("job", &test_simple_job_driver, NULL, job_node, 0, BLK_PERM_ALL, 0, 0, NULL, NULL, &error_abort); @@ -1936,8 +1948,10 @@ static void do_test_replace_child_mid_drain(int old_drain_count, new_child_bs->total_sectors = 1; bdrv_ref(old_child_bs); + bdrv_graph_wrlock(NULL); bdrv_attach_child(parent_bs, old_child_bs, "child", &child_of_bds, BDRV_CHILD_COW, &error_abort); + bdrv_graph_wrunlock(); parent_s->setup_completed = true; for (i = 0; i < old_drain_count; i++) { diff --git a/tests/unit/test-bdrv-graph-mod.c b/tests/unit/test-bdrv-graph-mod.c index d850316..621e616 100644 --- a/tests/unit/test-bdrv-graph-mod.c +++ b/tests/unit/test-bdrv-graph-mod.c @@ -137,8 +137,10 @@ static void test_update_perm_tree(void) blk_insert_bs(root, bs, &error_abort); + bdrv_graph_wrlock(NULL); bdrv_attach_child(filter, bs, "child", &child_of_bds, BDRV_CHILD_DATA, &error_abort); + bdrv_graph_wrunlock(); aio_context_acquire(qemu_get_aio_context()); ret = bdrv_append(filter, bs, NULL); @@ -205,8 +207,10 @@ static void test_should_update_child(void) bdrv_set_backing_hd(target, bs, &error_abort); g_assert(target->backing->bs == bs); + bdrv_graph_wrlock(NULL); bdrv_attach_child(filter, target, "target", &child_of_bds, BDRV_CHILD_DATA, &error_abort); + bdrv_graph_wrunlock(); aio_context_acquire(qemu_get_aio_context()); bdrv_append(filter, bs, &error_abort); aio_context_release(qemu_get_aio_context()); @@ -236,6 +240,7 @@ static void test_parallel_exclusive_write(void) */ bdrv_ref(base); + bdrv_graph_wrlock(NULL); bdrv_attach_child(top, fl1, "backing", &child_of_bds, BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY, &error_abort); @@ -245,6 +250,7 @@ static void test_parallel_exclusive_write(void) bdrv_attach_child(fl2, base, "backing", &child_of_bds, BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY, &error_abort); + bdrv_graph_wrunlock(); bdrv_replace_node(fl1, fl2, &error_abort); @@ -349,6 +355,7 @@ static void test_parallel_perm_update(void) */ bdrv_ref(base); + bdrv_graph_wrlock(NULL); bdrv_attach_child(top, ws, "file", &child_of_bds, BDRV_CHILD_DATA, &error_abort); c_fl1 = bdrv_attach_child(ws, fl1, "first", &child_of_bds, @@ -361,6 +368,7 @@ static void test_parallel_perm_update(void) bdrv_attach_child(fl2, base, "backing", &child_of_bds, BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY, &error_abort); + bdrv_graph_wrunlock(); /* Select fl1 as first child to be active */ s->selected = c_fl1; @@ -410,9 +418,11 @@ static void test_append_greedy_filter(void) BlockDriverState *base = no_perm_node("base"); BlockDriverState *fl = exclusive_writer_node("fl1"); + bdrv_graph_wrlock(NULL); bdrv_attach_child(top, base, "backing", &child_of_bds, BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY, &error_abort); + bdrv_graph_wrunlock(); aio_context_acquire(qemu_get_aio_context()); bdrv_append(fl, base, &error_abort); -- cgit v1.1 From 3804e3cf540af25a01d0d418a5a1d4f78c2574ff Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:12 +0200 Subject: block: Mark bdrv_parent_perms_conflict() and callers GRAPH_RDLOCK The function reads the parents list, so it needs to hold the graph lock. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-14-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block.c | 28 ++++++++++++++++++---------- block/block-backend.c | 26 ++++++++++++++++++++------ block/crypto.c | 6 ++++-- block/mirror.c | 8 ++++++++ block/vmdk.c | 2 ++ include/block/block_int-common.h | 6 +++--- include/block/block_int-global-state.h | 8 +++++--- include/sysemu/block-backend-global-state.h | 4 ++-- tests/unit/test-bdrv-graph-mod.c | 4 ++++ 9 files changed, 66 insertions(+), 26 deletions(-) diff --git a/block.c b/block.c index 3690238..6720bc4 100644 --- a/block.c +++ b/block.c @@ -2202,7 +2202,8 @@ static bool bdrv_a_allow_b(BdrvChild *a, BdrvChild *b, Error **errp) return false; } -static bool bdrv_parent_perms_conflict(BlockDriverState *bs, Error **errp) +static bool GRAPH_RDLOCK +bdrv_parent_perms_conflict(BlockDriverState *bs, Error **errp) { BdrvChild *a, *b; GLOBAL_STATE_CODE(); @@ -2255,8 +2256,8 @@ static void bdrv_child_perm(BlockDriverState *bs, BlockDriverState *child_bs, * simplest way to satisfy this criteria: use only result of * bdrv_topological_dfs() or NULL as @list parameter. */ -static GSList *bdrv_topological_dfs(GSList *list, GHashTable *found, - BlockDriverState *bs) +static GSList * GRAPH_RDLOCK +bdrv_topological_dfs(GSList *list, GHashTable *found, BlockDriverState *bs) { BdrvChild *child; g_autoptr(GHashTable) local_found = NULL; @@ -2532,8 +2533,9 @@ static int bdrv_node_refresh_perm(BlockDriverState *bs, BlockReopenQueue *q, * @list is a product of bdrv_topological_dfs() (may be called several times) - * a topologically sorted subgraph. */ -static int bdrv_do_refresh_perms(GSList *list, BlockReopenQueue *q, - Transaction *tran, Error **errp) +static int GRAPH_RDLOCK +bdrv_do_refresh_perms(GSList *list, BlockReopenQueue *q, Transaction *tran, + Error **errp) { int ret; BlockDriverState *bs; @@ -2560,8 +2562,9 @@ static int bdrv_do_refresh_perms(GSList *list, BlockReopenQueue *q, * topologically sorted. It's not a problem if some node occurs in the @list * several times. */ -static int bdrv_list_refresh_perms(GSList *list, BlockReopenQueue *q, - Transaction *tran, Error **errp) +static int GRAPH_RDLOCK +bdrv_list_refresh_perms(GSList *list, BlockReopenQueue *q, Transaction *tran, + Error **errp) { g_autoptr(GHashTable) found = g_hash_table_new(NULL, NULL); g_autoptr(GSList) refresh_list = NULL; @@ -2621,8 +2624,8 @@ char *bdrv_perm_names(uint64_t perm) /* @tran is allowed to be NULL. In this case no rollback is possible */ -static int bdrv_refresh_perms(BlockDriverState *bs, Transaction *tran, - Error **errp) +static int GRAPH_RDLOCK +bdrv_refresh_perms(BlockDriverState *bs, Transaction *tran, Error **errp) { int ret; Transaction *local_tran = NULL; @@ -3247,7 +3250,6 @@ void bdrv_root_unref_child(BdrvChild *child) GLOBAL_STATE_CODE(); bdrv_graph_wrlock(NULL); bdrv_replace_child_noperm(child, NULL); - bdrv_graph_wrunlock(); bdrv_child_free(child); if (child_bs) { @@ -3266,6 +3268,7 @@ void bdrv_root_unref_child(BdrvChild *child) NULL); } + bdrv_graph_wrunlock(); bdrv_unref(child_bs); } @@ -4585,7 +4588,10 @@ int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp) * reconfiguring the fd and that's why it does it in raw_check_perm(), not * in raw_reopen_prepare() which is called with "old" permissions. */ + bdrv_graph_rdlock_main_loop(); ret = bdrv_list_refresh_perms(refresh_list, bs_queue, tran, errp); + bdrv_graph_rdunlock_main_loop(); + if (ret < 0) { goto abort; } @@ -6833,6 +6839,7 @@ int bdrv_activate(BlockDriverState *bs, Error **errp) BdrvDirtyBitmap *bm; GLOBAL_STATE_CODE(); + GRAPH_RDLOCK_GUARD_MAINLOOP(); if (!bs->drv) { return -ENOMEDIUM; @@ -6963,6 +6970,7 @@ static int bdrv_inactivate_recurse(BlockDriverState *bs) uint64_t cumulative_perms, cumulative_shared_perms; GLOBAL_STATE_CODE(); + GRAPH_RDLOCK_GUARD_MAINLOOP(); if (!bs->drv) { return -ENOMEDIUM; diff --git a/block/block-backend.c b/block/block-backend.c index 4009ed5..8d0282a 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -121,6 +121,10 @@ static QTAILQ_HEAD(, BlockBackend) block_backends = static QTAILQ_HEAD(, BlockBackend) monitor_block_backends = QTAILQ_HEAD_INITIALIZER(monitor_block_backends); +static int coroutine_mixed_fn GRAPH_RDLOCK +blk_set_perm_locked(BlockBackend *blk, uint64_t perm, uint64_t shared_perm, + Error **errp); + static void blk_root_inherit_options(BdrvChildRole role, bool parent_is_format, int *child_flags, QDict *child_options, int parent_flags, QDict *parent_options) @@ -186,7 +190,7 @@ static void blk_vm_state_changed(void *opaque, bool running, RunState state) * * If an error is returned, the VM cannot be allowed to be resumed. */ -static void blk_root_activate(BdrvChild *child, Error **errp) +static void GRAPH_RDLOCK blk_root_activate(BdrvChild *child, Error **errp) { BlockBackend *blk = child->opaque; Error *local_err = NULL; @@ -207,7 +211,7 @@ static void blk_root_activate(BdrvChild *child, Error **errp) */ saved_shared_perm = blk->shared_perm; - blk_set_perm(blk, blk->perm, BLK_PERM_ALL, &local_err); + blk_set_perm_locked(blk, blk->perm, BLK_PERM_ALL, &local_err); if (local_err) { error_propagate(errp, local_err); blk->disable_perm = true; @@ -226,7 +230,7 @@ static void blk_root_activate(BdrvChild *child, Error **errp) return; } - blk_set_perm(blk, blk->perm, blk->shared_perm, &local_err); + blk_set_perm_locked(blk, blk->perm, blk->shared_perm, &local_err); if (local_err) { error_propagate(errp, local_err); blk->disable_perm = true; @@ -259,7 +263,7 @@ static bool blk_can_inactivate(BlockBackend *blk) return blk->force_allow_inactivate; } -static int blk_root_inactivate(BdrvChild *child) +static int GRAPH_RDLOCK blk_root_inactivate(BdrvChild *child) { BlockBackend *blk = child->opaque; @@ -953,8 +957,9 @@ int blk_replace_bs(BlockBackend *blk, BlockDriverState *new_bs, Error **errp) /* * Sets the permission bitmasks that the user of the BlockBackend needs. */ -int blk_set_perm(BlockBackend *blk, uint64_t perm, uint64_t shared_perm, - Error **errp) +static int coroutine_mixed_fn GRAPH_RDLOCK +blk_set_perm_locked(BlockBackend *blk, uint64_t perm, uint64_t shared_perm, + Error **errp) { int ret; GLOBAL_STATE_CODE(); @@ -972,6 +977,15 @@ int blk_set_perm(BlockBackend *blk, uint64_t perm, uint64_t shared_perm, return 0; } +int blk_set_perm(BlockBackend *blk, uint64_t perm, uint64_t shared_perm, + Error **errp) +{ + GLOBAL_STATE_CODE(); + GRAPH_RDLOCK_GUARD_MAINLOOP(); + + return blk_set_perm_locked(blk, perm, shared_perm, errp); +} + void blk_get_perm(BlockBackend *blk, uint64_t *perm, uint64_t *shared_perm) { GLOBAL_STATE_CODE(); diff --git a/block/crypto.c b/block/crypto.c index 6ee8d46..c9c9a39 100644 --- a/block/crypto.c +++ b/block/crypto.c @@ -777,7 +777,7 @@ block_crypto_get_specific_info_luks(BlockDriverState *bs, Error **errp) return spec_info; } -static int +static int GRAPH_RDLOCK block_crypto_amend_prepare(BlockDriverState *bs, Error **errp) { BlockCrypto *crypto = bs->opaque; @@ -793,7 +793,7 @@ block_crypto_amend_prepare(BlockDriverState *bs, Error **errp) return ret; } -static void +static void GRAPH_RDLOCK block_crypto_amend_cleanup(BlockDriverState *bs) { BlockCrypto *crypto = bs->opaque; @@ -841,6 +841,8 @@ block_crypto_amend_options_luks(BlockDriverState *bs, QCryptoBlockAmendOptions *amend_options = NULL; int ret = -EINVAL; + assume_graph_lock(); /* FIXME */ + assert(crypto); assert(crypto->block); diff --git a/block/mirror.c b/block/mirror.c index aae4beb..3cc0757 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -702,8 +702,12 @@ static int mirror_exit_common(Job *job) * mirror_top_bs from now on, so keep it drained. */ bdrv_drained_begin(mirror_top_bs); bs_opaque->stop = true; + + bdrv_graph_rdlock_main_loop(); bdrv_child_refresh_perms(mirror_top_bs, mirror_top_bs->backing, &error_abort); + bdrv_graph_rdunlock_main_loop(); + if (!abort && s->backing_mode == MIRROR_SOURCE_BACKING_CHAIN) { BlockDriverState *backing = s->is_none_mode ? src : s->base; BlockDriverState *unfiltered_target = bdrv_skip_filters(target_bs); @@ -1670,6 +1674,8 @@ static BlockJob *mirror_start_job( uint64_t target_perms, target_shared_perms; int ret; + GLOBAL_STATE_CODE(); + if (granularity == 0) { granularity = bdrv_get_default_bitmap_granularity(target); } @@ -1906,8 +1912,10 @@ fail: } bs_opaque->stop = true; + bdrv_graph_rdlock_main_loop(); bdrv_child_refresh_perms(mirror_top_bs, mirror_top_bs->backing, &error_abort); + bdrv_graph_rdunlock_main_loop(); bdrv_replace_node(mirror_top_bs, mirror_top_bs->backing->bs, &error_abort); bdrv_unref(mirror_top_bs); diff --git a/block/vmdk.c b/block/vmdk.c index 58ce290..84185b7 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1309,6 +1309,8 @@ static int vmdk_open(BlockDriverState *bs, QDict *options, int flags, BDRVVmdkState *s = bs->opaque; uint32_t magic; + GRAPH_RDLOCK_GUARD_MAINLOOP(); + ret = bdrv_open_file_child(NULL, options, "file", bs, errp); if (ret < 0) { return ret; diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h index 85be256..fda9d8b 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -311,7 +311,7 @@ struct BlockDriver { */ void (*bdrv_cancel_in_flight)(BlockDriverState *bs); - int (*bdrv_inactivate)(BlockDriverState *bs); + int GRAPH_RDLOCK_PTR (*bdrv_inactivate)(BlockDriverState *bs); int (*bdrv_snapshot_create)(BlockDriverState *bs, QEMUSnapshotInfo *sn_info); @@ -944,8 +944,8 @@ struct BdrvChildClass { * when migration is completing) and it can start/stop requesting * permissions and doing I/O on it. */ - void (*activate)(BdrvChild *child, Error **errp); - int (*inactivate)(BdrvChild *child); + void GRAPH_RDLOCK_PTR (*activate)(BdrvChild *child, Error **errp); + int GRAPH_RDLOCK_PTR (*inactivate)(BdrvChild *child); void GRAPH_WRLOCK_PTR (*attach)(BdrvChild *child); void GRAPH_WRLOCK_PTR (*detach)(BdrvChild *child); diff --git a/include/block/block_int-global-state.h b/include/block/block_int-global-state.h index da5fb31..bebcc08 100644 --- a/include/block/block_int-global-state.h +++ b/include/block/block_int-global-state.h @@ -212,8 +212,9 @@ void bdrv_get_cumulative_perm(BlockDriverState *bs, uint64_t *perm, * bdrv_child_refresh_perms() instead and make the parent's * .bdrv_child_perm() implementation return the correct values. */ -int bdrv_child_try_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared, - Error **errp); +int GRAPH_RDLOCK +bdrv_child_try_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared, + Error **errp); /** * Calls bs->drv->bdrv_child_perm() and updates the child's permission @@ -223,7 +224,8 @@ int bdrv_child_try_set_perm(BdrvChild *c, uint64_t perm, uint64_t shared, * values than before, but which will not result in the block layer * automatically refreshing the permissions. */ -int bdrv_child_refresh_perms(BlockDriverState *bs, BdrvChild *c, Error **errp); +int GRAPH_RDLOCK +bdrv_child_refresh_perms(BlockDriverState *bs, BdrvChild *c, Error **errp); bool GRAPH_RDLOCK bdrv_recurse_can_replace(BlockDriverState *bs, BlockDriverState *to_replace); diff --git a/include/sysemu/block-backend-global-state.h b/include/sysemu/block-backend-global-state.h index 184e667..d5f6754 100644 --- a/include/sysemu/block-backend-global-state.h +++ b/include/sysemu/block-backend-global-state.h @@ -61,8 +61,8 @@ int blk_insert_bs(BlockBackend *blk, BlockDriverState *bs, Error **errp); int blk_replace_bs(BlockBackend *blk, BlockDriverState *new_bs, Error **errp); bool bdrv_has_blk(BlockDriverState *bs); bool bdrv_is_root_node(BlockDriverState *bs); -int blk_set_perm(BlockBackend *blk, uint64_t perm, uint64_t shared_perm, - Error **errp); +int GRAPH_UNLOCKED blk_set_perm(BlockBackend *blk, uint64_t perm, + uint64_t shared_perm, Error **errp); void blk_get_perm(BlockBackend *blk, uint64_t *perm, uint64_t *shared_perm); void blk_iostatus_enable(BlockBackend *blk); diff --git a/tests/unit/test-bdrv-graph-mod.c b/tests/unit/test-bdrv-graph-mod.c index 621e616..8609f7f 100644 --- a/tests/unit/test-bdrv-graph-mod.c +++ b/tests/unit/test-bdrv-graph-mod.c @@ -372,6 +372,9 @@ static void test_parallel_perm_update(void) /* Select fl1 as first child to be active */ s->selected = c_fl1; + + bdrv_graph_rdlock_main_loop(); + bdrv_child_refresh_perms(top, top->children.lh_first, &error_abort); assert(c_fl1->perm & BLK_PERM_WRITE); @@ -391,6 +394,7 @@ static void test_parallel_perm_update(void) assert(c_fl1->perm & BLK_PERM_WRITE); assert(!(c_fl2->perm & BLK_PERM_WRITE)); + bdrv_graph_rdunlock_main_loop(); bdrv_unref(top); } -- cgit v1.1 From bce73bc25bd0aa1fee21b37980c8f04b49c6b44b Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:13 +0200 Subject: block: Mark bdrv_get_cumulative_perm() and callers GRAPH_RDLOCK The function reads the parents list, so it needs to hold the graph lock. This happens to result in BlockDriver.bdrv_set_perm() to be called with the graph lock held. For consistency, make it the same for all of the BlockDriver callbacks for updating permissions and annotate the function pointers with GRAPH_RDLOCK_PTR. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-15-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block.c | 35 ++++++++++++++++++++++++++-------- blockdev.c | 6 ++++++ include/block/block_int-common.h | 9 +++++---- include/block/block_int-global-state.h | 4 ++-- 4 files changed, 40 insertions(+), 14 deletions(-) diff --git a/block.c b/block.c index 6720bc4..186efda 100644 --- a/block.c +++ b/block.c @@ -2320,7 +2320,7 @@ static void bdrv_child_set_perm(BdrvChild *c, uint64_t perm, tran_add(tran, &bdrv_child_set_pem_drv, s); } -static void bdrv_drv_set_perm_commit(void *opaque) +static void GRAPH_RDLOCK bdrv_drv_set_perm_commit(void *opaque) { BlockDriverState *bs = opaque; uint64_t cumulative_perms, cumulative_shared_perms; @@ -2333,7 +2333,7 @@ static void bdrv_drv_set_perm_commit(void *opaque) } } -static void bdrv_drv_set_perm_abort(void *opaque) +static void GRAPH_RDLOCK bdrv_drv_set_perm_abort(void *opaque) { BlockDriverState *bs = opaque; GLOBAL_STATE_CODE(); @@ -2348,9 +2348,13 @@ TransactionActionDrv bdrv_drv_set_perm_drv = { .commit = bdrv_drv_set_perm_commit, }; -static int bdrv_drv_set_perm(BlockDriverState *bs, uint64_t perm, - uint64_t shared_perm, Transaction *tran, - Error **errp) +/* + * After calling this function, the transaction @tran may only be completed + * while holding a reader lock for the graph. + */ +static int GRAPH_RDLOCK +bdrv_drv_set_perm(BlockDriverState *bs, uint64_t perm, uint64_t shared_perm, + Transaction *tran, Error **errp) { GLOBAL_STATE_CODE(); if (!bs->drv) { @@ -2457,9 +2461,13 @@ bdrv_replace_child_tran(BdrvChild *child, BlockDriverState *new_bs, /* * Refresh permissions in @bs subtree. The function is intended to be called * after some graph modification that was done without permission update. + * + * After calling this function, the transaction @tran may only be completed + * while holding a reader lock for the graph. */ -static int bdrv_node_refresh_perm(BlockDriverState *bs, BlockReopenQueue *q, - Transaction *tran, Error **errp) +static int GRAPH_RDLOCK +bdrv_node_refresh_perm(BlockDriverState *bs, BlockReopenQueue *q, + Transaction *tran, Error **errp) { BlockDriver *drv = bs->drv; BdrvChild *c; @@ -2532,6 +2540,9 @@ static int bdrv_node_refresh_perm(BlockDriverState *bs, BlockReopenQueue *q, /* * @list is a product of bdrv_topological_dfs() (may be called several times) - * a topologically sorted subgraph. + * + * After calling this function, the transaction @tran may only be completed + * while holding a reader lock for the graph. */ static int GRAPH_RDLOCK bdrv_do_refresh_perms(GSList *list, BlockReopenQueue *q, Transaction *tran, @@ -2561,6 +2572,9 @@ bdrv_do_refresh_perms(GSList *list, BlockReopenQueue *q, Transaction *tran, * @list is any list of nodes. List is completed by all subtrees and * topologically sorted. It's not a problem if some node occurs in the @list * several times. + * + * After calling this function, the transaction @tran may only be completed + * while holding a reader lock for the graph. */ static int GRAPH_RDLOCK bdrv_list_refresh_perms(GSList *list, BlockReopenQueue *q, Transaction *tran, @@ -2623,7 +2637,12 @@ char *bdrv_perm_names(uint64_t perm) } -/* @tran is allowed to be NULL. In this case no rollback is possible */ +/* + * @tran is allowed to be NULL. In this case no rollback is possible. + * + * After calling this function, the transaction @tran may only be completed + * while holding a reader lock for the graph. + */ static int GRAPH_RDLOCK bdrv_refresh_perms(BlockDriverState *bs, Transaction *tran, Error **errp) { diff --git a/blockdev.c b/blockdev.c index e6eba61..372eaf1 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1378,6 +1378,9 @@ static void external_snapshot_action(TransactionAction *action, AioContext *aio_context; uint64_t perm, shared; + /* TODO We'll eventually have to take a writer lock in this function */ + GRAPH_RDLOCK_GUARD_MAINLOOP(); + tran_add(tran, &external_snapshot_drv, state); /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar @@ -2521,6 +2524,9 @@ void qmp_block_commit(const char *job_id, const char *device, int job_flags = JOB_DEFAULT; uint64_t top_perm, top_shared; + /* TODO We'll eventually have to take a writer lock in this function */ + GRAPH_RDLOCK_GUARD_MAINLOOP(); + if (!has_speed) { speed = 0; } diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h index fda9d8b..f82c14f 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -413,8 +413,8 @@ struct BlockDriver { * If both conditions are met, 0 is returned. Otherwise, -errno is returned * and errp is set to an error describing the conflict. */ - int (*bdrv_check_perm)(BlockDriverState *bs, uint64_t perm, - uint64_t shared, Error **errp); + int GRAPH_RDLOCK_PTR (*bdrv_check_perm)(BlockDriverState *bs, uint64_t perm, + uint64_t shared, Error **errp); /** * Called to inform the driver that the set of cumulative set of used @@ -426,7 +426,8 @@ struct BlockDriver { * This function is only invoked after bdrv_check_perm(), so block drivers * may rely on preparations made in their .bdrv_check_perm implementation. */ - void (*bdrv_set_perm)(BlockDriverState *bs, uint64_t perm, uint64_t shared); + void GRAPH_RDLOCK_PTR (*bdrv_set_perm)( + BlockDriverState *bs, uint64_t perm, uint64_t shared); /* * Called to inform the driver that after a previous bdrv_check_perm() @@ -436,7 +437,7 @@ struct BlockDriver { * This function can be called even for nodes that never saw a * bdrv_check_perm() call. It is a no-op then. */ - void (*bdrv_abort_perm_update)(BlockDriverState *bs); + void GRAPH_RDLOCK_PTR (*bdrv_abort_perm_update)(BlockDriverState *bs); /** * Returns in @nperm and @nshared the permissions that the driver for @bs diff --git a/include/block/block_int-global-state.h b/include/block/block_int-global-state.h index bebcc08..e2304db 100644 --- a/include/block/block_int-global-state.h +++ b/include/block/block_int-global-state.h @@ -204,8 +204,8 @@ BdrvChild *bdrv_root_attach_child(BlockDriverState *child_bs, void *opaque, Error **errp); void bdrv_root_unref_child(BdrvChild *child); -void bdrv_get_cumulative_perm(BlockDriverState *bs, uint64_t *perm, - uint64_t *shared_perm); +void GRAPH_RDLOCK bdrv_get_cumulative_perm(BlockDriverState *bs, uint64_t *perm, + uint64_t *shared_perm); /** * Sets a BdrvChild's permissions. Avoid if the parent is a BDS; use -- cgit v1.1 From c629b6d22349c83ca262d1887c0920e87ec0bfdb Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:14 +0200 Subject: block: Mark bdrv_child_perm() GRAPH_RDLOCK This adds GRAPH_RDLOCK annotations to declare that callers of bdrv_child_perm() need to hold a reader lock for the graph because some implementations access the children list of a node. The callers of bdrv_child_perm() conveniently already hold the lock. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-16-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block.c | 11 ++++++----- block/copy-before-write.c | 10 +++++----- include/block/block_int-common.h | 10 +++++----- 3 files changed, 16 insertions(+), 15 deletions(-) diff --git a/block.c b/block.c index 186efda..0f7f78f 100644 --- a/block.c +++ b/block.c @@ -2228,11 +2228,12 @@ bdrv_parent_perms_conflict(BlockDriverState *bs, Error **errp) return false; } -static void bdrv_child_perm(BlockDriverState *bs, BlockDriverState *child_bs, - BdrvChild *c, BdrvChildRole role, - BlockReopenQueue *reopen_queue, - uint64_t parent_perm, uint64_t parent_shared, - uint64_t *nperm, uint64_t *nshared) +static void GRAPH_RDLOCK +bdrv_child_perm(BlockDriverState *bs, BlockDriverState *child_bs, + BdrvChild *c, BdrvChildRole role, + BlockReopenQueue *reopen_queue, + uint64_t parent_perm, uint64_t parent_shared, + uint64_t *nperm, uint64_t *nshared) { assert(bs->drv && bs->drv->bdrv_child_perm); GLOBAL_STATE_CODE(); diff --git a/block/copy-before-write.c b/block/copy-before-write.c index 9a0e2b6..aeaff3b 100644 --- a/block/copy-before-write.c +++ b/block/copy-before-write.c @@ -341,11 +341,11 @@ static void cbw_refresh_filename(BlockDriverState *bs) bs->file->bs->filename); } -static void cbw_child_perm(BlockDriverState *bs, BdrvChild *c, - BdrvChildRole role, - BlockReopenQueue *reopen_queue, - uint64_t perm, uint64_t shared, - uint64_t *nperm, uint64_t *nshared) +static void GRAPH_RDLOCK +cbw_child_perm(BlockDriverState *bs, BdrvChild *c, BdrvChildRole role, + BlockReopenQueue *reopen_queue, + uint64_t perm, uint64_t shared, + uint64_t *nperm, uint64_t *nshared) { if (!(role & BDRV_CHILD_FILTERED)) { /* diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h index f82c14f..3feb67e 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -451,11 +451,11 @@ struct BlockDriver { * permissions, but those that will be needed after applying the * @reopen_queue. */ - void (*bdrv_child_perm)(BlockDriverState *bs, BdrvChild *c, - BdrvChildRole role, - BlockReopenQueue *reopen_queue, - uint64_t parent_perm, uint64_t parent_shared, - uint64_t *nperm, uint64_t *nshared); + void GRAPH_RDLOCK_PTR (*bdrv_child_perm)( + BlockDriverState *bs, BdrvChild *c, BdrvChildRole role, + BlockReopenQueue *reopen_queue, + uint64_t parent_perm, uint64_t parent_shared, + uint64_t *nperm, uint64_t *nshared); /** * Register/unregister a buffer for I/O. For example, when the driver is -- cgit v1.1 From 356f4ef611df18f6f8323a9fe6e6b4963272bf74 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:15 +0200 Subject: block: Mark bdrv_parent_cb_change_media() GRAPH_RDLOCK The function reads the parents list, so it needs to hold the graph lock. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-17-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/block.c b/block.c index 0f7f78f..06d2a1b 100644 --- a/block.c +++ b/block.c @@ -3371,7 +3371,8 @@ void bdrv_unref_child(BlockDriverState *parent, BdrvChild *child) } -static void bdrv_parent_cb_change_media(BlockDriverState *bs, bool load) +static void GRAPH_RDLOCK +bdrv_parent_cb_change_media(BlockDriverState *bs, bool load) { BdrvChild *c; GLOBAL_STATE_CODE(); @@ -3969,6 +3970,9 @@ bdrv_open_inherit(const char *filename, const char *reference, QDict *options, GLOBAL_STATE_CODE(); assert(!qemu_in_coroutine()); + /* TODO We'll eventually have to take a writer lock in this function */ + GRAPH_RDLOCK_GUARD_MAINLOOP(); + if (reference) { bool options_non_empty = options ? qdict_size(options) : false; qobject_unref(options); -- cgit v1.1 From 733467a1e6067070a8b641f51675d0cb5b715a83 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:16 +0200 Subject: block: Take graph rdlock in bdrv_drop_intermediate() The function reads the parents list, so it needs to hold the graph lock. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Message-ID: <20230911094620.45040-18-kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi Signed-off-by: Kevin Wolf --- block.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/block.c b/block.c index 06d2a1b..e024a6c 100644 --- a/block.c +++ b/block.c @@ -5938,9 +5938,11 @@ int bdrv_drop_intermediate(BlockDriverState *top, BlockDriverState *base, backing_file_str = base->filename; } + bdrv_graph_rdlock_main_loop(); QLIST_FOREACH(c, &top->parents, next_parent) { updated_children = g_slist_prepend(updated_children, c); } + bdrv_graph_rdunlock_main_loop(); /* * It seems correct to pass detach_subchain=true here, but it triggers -- cgit v1.1 From 7f831d29e3d005e499b22c0591a26a33eb5c406d Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:17 +0200 Subject: block: Take graph rdlock in bdrv_change_aio_context() The function reads the parents list, so it needs to hold the graph lock. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Message-ID: <20230911094620.45040-19-kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi Signed-off-by: Kevin Wolf --- block.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/block.c b/block.c index e024a6c..8e589bb 100644 --- a/block.c +++ b/block.c @@ -7688,17 +7688,21 @@ static bool bdrv_change_aio_context(BlockDriverState *bs, AioContext *ctx, return true; } + bdrv_graph_rdlock_main_loop(); QLIST_FOREACH(c, &bs->parents, next_parent) { if (!bdrv_parent_change_aio_context(c, ctx, visited, tran, errp)) { + bdrv_graph_rdunlock_main_loop(); return false; } } QLIST_FOREACH(c, &bs->children, next) { if (!bdrv_child_change_aio_context(c, ctx, visited, tran, errp)) { + bdrv_graph_rdunlock_main_loop(); return false; } } + bdrv_graph_rdunlock_main_loop(); state = g_new(BdrvStateSetAioContext, 1); *state = (BdrvStateSetAioContext) { -- cgit v1.1 From ede01e4635050a395eacd57b7d7fbea8ea208704 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:18 +0200 Subject: block: Mark bdrv_root_unref_child() GRAPH_WRLOCK Instead of taking the writer lock internally, require callers to already hold it when calling bdrv_root_unref_child(). These callers will typically already hold the graph lock once the locking work is completed, which means that they can't call functions that take it internally. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-20-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block.c | 6 +++--- block/block-backend.c | 3 +++ blockjob.c | 2 ++ include/block/block_int-global-state.h | 2 +- 4 files changed, 9 insertions(+), 4 deletions(-) diff --git a/block.c b/block.c index 8e589bb..9ea8333 100644 --- a/block.c +++ b/block.c @@ -3268,7 +3268,6 @@ void bdrv_root_unref_child(BdrvChild *child) BlockDriverState *child_bs = child->bs; GLOBAL_STATE_CODE(); - bdrv_graph_wrlock(NULL); bdrv_replace_child_noperm(child, NULL); bdrv_child_free(child); @@ -3288,8 +3287,7 @@ void bdrv_root_unref_child(BdrvChild *child) NULL); } - bdrv_graph_wrunlock(); - bdrv_unref(child_bs); + bdrv_schedule_unref(child_bs); } typedef struct BdrvSetInheritsFrom { @@ -3366,8 +3364,10 @@ void bdrv_unref_child(BlockDriverState *parent, BdrvChild *child) return; } + bdrv_graph_wrlock(NULL); bdrv_unset_inherits_from(parent, child, NULL); bdrv_root_unref_child(child); + bdrv_graph_wrunlock(); } diff --git a/block/block-backend.c b/block/block-backend.c index 8d0282a..c2636f4 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -915,7 +915,10 @@ void blk_remove_bs(BlockBackend *blk) blk_drain(blk); root = blk->root; blk->root = NULL; + + bdrv_graph_wrlock(NULL); bdrv_root_unref_child(root); + bdrv_graph_wrunlock(); } /* diff --git a/blockjob.c b/blockjob.c index 25fe8e6..58c5d64 100644 --- a/blockjob.c +++ b/blockjob.c @@ -198,6 +198,7 @@ void block_job_remove_all_bdrv(BlockJob *job) * one to make sure that such a concurrent access does not attempt * to process an already freed BdrvChild. */ + bdrv_graph_wrlock(NULL); while (job->nodes) { GSList *l = job->nodes; BdrvChild *c = l->data; @@ -209,6 +210,7 @@ void block_job_remove_all_bdrv(BlockJob *job) g_slist_free_1(l); } + bdrv_graph_wrunlock(); } bool block_job_has_bdrv(BlockJob *job, BlockDriverState *bs) diff --git a/include/block/block_int-global-state.h b/include/block/block_int-global-state.h index e2304db..074b677 100644 --- a/include/block/block_int-global-state.h +++ b/include/block/block_int-global-state.h @@ -202,7 +202,7 @@ BdrvChild *bdrv_root_attach_child(BlockDriverState *child_bs, BdrvChildRole child_role, uint64_t perm, uint64_t shared_perm, void *opaque, Error **errp); -void bdrv_root_unref_child(BdrvChild *child); +void GRAPH_WRLOCK bdrv_root_unref_child(BdrvChild *child); void GRAPH_RDLOCK bdrv_get_cumulative_perm(BlockDriverState *bs, uint64_t *perm, uint64_t *shared_perm); -- cgit v1.1 From 32a8aba37eaae54d3a0a7ae5e93e3e157525660a Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:19 +0200 Subject: block: Mark bdrv_unref_child() GRAPH_WRLOCK Instead of taking the writer lock internally, require callers to already hold it when calling bdrv_unref_child(). These callers will typically already hold the graph lock once the locking work is completed, which means that they can't call functions that take it internally. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-21-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block.c | 11 +++++++---- block/blklogwrites.c | 4 ++++ block/blkverify.c | 2 ++ block/qcow2.c | 4 +++- block/quorum.c | 6 ++++++ block/replication.c | 3 +++ block/snapshot.c | 2 ++ block/vmdk.c | 11 +++++++++++ include/block/block-global-state.h | 7 ++++++- tests/unit/test-bdrv-drain.c | 8 ++++++-- 10 files changed, 50 insertions(+), 8 deletions(-) diff --git a/block.c b/block.c index 9ea8333..e7f349b 100644 --- a/block.c +++ b/block.c @@ -1701,7 +1701,9 @@ bdrv_open_driver(BlockDriverState *bs, BlockDriver *drv, const char *node_name, open_failed: bs->drv = NULL; if (bs->file != NULL) { + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, bs->file); + bdrv_graph_wrunlock(); assert(!bs->file); } g_free(bs->opaque); @@ -3331,8 +3333,9 @@ static void bdrv_set_inherits_from(BlockDriverState *bs, * @root that point to @root, where necessary. * @tran is allowed to be NULL. In this case no rollback is possible */ -static void bdrv_unset_inherits_from(BlockDriverState *root, BdrvChild *child, - Transaction *tran) +static void GRAPH_WRLOCK +bdrv_unset_inherits_from(BlockDriverState *root, BdrvChild *child, + Transaction *tran) { BdrvChild *c; @@ -3364,10 +3367,8 @@ void bdrv_unref_child(BlockDriverState *parent, BdrvChild *child) return; } - bdrv_graph_wrlock(NULL); bdrv_unset_inherits_from(parent, child, NULL); bdrv_root_unref_child(child); - bdrv_graph_wrunlock(); } @@ -5164,9 +5165,11 @@ static void bdrv_close(BlockDriverState *bs) bs->drv = NULL; } + bdrv_graph_wrlock(NULL); QLIST_FOREACH_SAFE(child, &bs->children, next, next) { bdrv_unref_child(bs, child); } + bdrv_graph_wrunlock(); assert(!bs->backing); assert(!bs->file); diff --git a/block/blklogwrites.c b/block/blklogwrites.c index 3ea7141..a0d7072 100644 --- a/block/blklogwrites.c +++ b/block/blklogwrites.c @@ -251,7 +251,9 @@ static int blk_log_writes_open(BlockDriverState *bs, QDict *options, int flags, ret = 0; fail_log: if (ret < 0) { + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, s->log_file); + bdrv_graph_wrunlock(); s->log_file = NULL; } fail: @@ -263,8 +265,10 @@ static void blk_log_writes_close(BlockDriverState *bs) { BDRVBlkLogWritesState *s = bs->opaque; + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, s->log_file); s->log_file = NULL; + bdrv_graph_wrunlock(); } static int64_t coroutine_fn GRAPH_RDLOCK diff --git a/block/blkverify.c b/block/blkverify.c index 7326461..dae9716 100644 --- a/block/blkverify.c +++ b/block/blkverify.c @@ -151,8 +151,10 @@ static void blkverify_close(BlockDriverState *bs) { BDRVBlkverifyState *s = bs->opaque; + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, s->test_file); s->test_file = NULL; + bdrv_graph_wrunlock(); } static int64_t coroutine_fn GRAPH_RDLOCK diff --git a/block/qcow2.c b/block/qcow2.c index b48cd9c..071004b 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1880,7 +1880,7 @@ qcow2_do_open(BlockDriverState *bs, QDict *options, int flags, g_free(s->image_data_file); if (open_data_file && has_data_file(bs)) { bdrv_graph_co_rdunlock(); - bdrv_unref_child(bs, s->data_file); + bdrv_co_unref_child(bs, s->data_file); bdrv_graph_co_rdlock(); s->data_file = NULL; } @@ -2790,7 +2790,9 @@ static void qcow2_do_close(BlockDriverState *bs, bool close_data_file) g_free(s->image_backing_format); if (close_data_file && has_data_file(bs)) { + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, s->data_file); + bdrv_graph_wrunlock(); s->data_file = NULL; } diff --git a/block/quorum.c b/block/quorum.c index def0539..620a50b 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -1037,12 +1037,14 @@ static int quorum_open(BlockDriverState *bs, QDict *options, int flags, close_exit: /* cleanup on error */ + bdrv_graph_wrlock(NULL); for (i = 0; i < s->num_children; i++) { if (!opened[i]) { continue; } bdrv_unref_child(bs, s->children[i]); } + bdrv_graph_wrunlock(); g_free(s->children); g_free(opened); exit: @@ -1055,9 +1057,11 @@ static void quorum_close(BlockDriverState *bs) BDRVQuorumState *s = bs->opaque; int i; + bdrv_graph_wrlock(NULL); for (i = 0; i < s->num_children; i++) { bdrv_unref_child(bs, s->children[i]); } + bdrv_graph_wrunlock(); g_free(s->children); } @@ -1147,7 +1151,9 @@ static void quorum_del_child(BlockDriverState *bs, BdrvChild *child, memmove(&s->children[i], &s->children[i + 1], (s->num_children - i - 1) * sizeof(BdrvChild *)); s->children = g_renew(BdrvChild *, s->children, --s->num_children); + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, child); + bdrv_graph_wrunlock(); quorum_refresh_flags(bs); bdrv_drained_end(bs); diff --git a/block/replication.c b/block/replication.c index eec9819..dd166d2 100644 --- a/block/replication.c +++ b/block/replication.c @@ -672,10 +672,13 @@ static void replication_done(void *opaque, int ret) if (ret == 0) { s->stage = BLOCK_REPLICATION_DONE; + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, s->secondary_disk); s->secondary_disk = NULL; bdrv_unref_child(bs, s->hidden_disk); s->hidden_disk = NULL; + bdrv_graph_wrunlock(); + s->error = 0; } else { s->stage = BLOCK_REPLICATION_FAILOVER_FAILED; diff --git a/block/snapshot.c b/block/snapshot.c index e22ac3e..b86b5b2 100644 --- a/block/snapshot.c +++ b/block/snapshot.c @@ -281,7 +281,9 @@ int bdrv_snapshot_goto(BlockDriverState *bs, } /* .bdrv_open() will re-attach it */ + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, fallback); + bdrv_graph_wrunlock(); ret = bdrv_snapshot_goto(fallback_bs, snapshot_id, errp); open_ret = drv->bdrv_open(bs, options, bs->open_flags, &local_err); diff --git a/block/vmdk.c b/block/vmdk.c index 84185b7..78baa04 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -272,6 +272,7 @@ static void vmdk_free_extents(BlockDriverState *bs) BDRVVmdkState *s = bs->opaque; VmdkExtent *e; + bdrv_graph_wrlock(NULL); for (i = 0; i < s->num_extents; i++) { e = &s->extents[i]; g_free(e->l1_table); @@ -282,6 +283,8 @@ static void vmdk_free_extents(BlockDriverState *bs) bdrv_unref_child(bs, e->file); } } + bdrv_graph_wrunlock(); + g_free(s->extents); } @@ -1220,7 +1223,9 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, ret = vmdk_add_extent(bs, extent_file, true, sectors, 0, 0, 0, 0, 0, &extent, errp); if (ret < 0) { + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, extent_file); + bdrv_graph_wrunlock(); goto out; } extent->flat_start_offset = flat_offset << 9; @@ -1235,20 +1240,26 @@ static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, } g_free(buf); if (ret) { + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, extent_file); + bdrv_graph_wrunlock(); goto out; } extent = &s->extents[s->num_extents - 1]; } else if (!strcmp(type, "SESPARSE")) { ret = vmdk_open_se_sparse(bs, extent_file, bs->open_flags, errp); if (ret) { + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, extent_file); + bdrv_graph_wrunlock(); goto out; } extent = &s->extents[s->num_extents - 1]; } else { error_setg(errp, "Unsupported extent type '%s'", type); + bdrv_graph_wrlock(NULL); bdrv_unref_child(bs, extent_file); + bdrv_graph_wrunlock(); ret = -ENOTSUP; goto out; } diff --git a/include/block/block-global-state.h b/include/block/block-global-state.h index eb12a35..0f6df8f 100644 --- a/include/block/block-global-state.h +++ b/include/block/block-global-state.h @@ -225,7 +225,12 @@ void bdrv_ref(BlockDriverState *bs); void no_coroutine_fn bdrv_unref(BlockDriverState *bs); void coroutine_fn no_co_wrapper bdrv_co_unref(BlockDriverState *bs); void GRAPH_WRLOCK bdrv_schedule_unref(BlockDriverState *bs); -void bdrv_unref_child(BlockDriverState *parent, BdrvChild *child); + +void GRAPH_WRLOCK +bdrv_unref_child(BlockDriverState *parent, BdrvChild *child); + +void coroutine_fn no_co_wrapper_bdrv_wrlock +bdrv_co_unref_child(BlockDriverState *parent, BdrvChild *child); BdrvChild * GRAPH_WRLOCK bdrv_attach_child(BlockDriverState *parent_bs, diff --git a/tests/unit/test-bdrv-drain.c b/tests/unit/test-bdrv-drain.c index 6d33249..b040a73 100644 --- a/tests/unit/test-bdrv-drain.c +++ b/tests/unit/test-bdrv-drain.c @@ -967,9 +967,12 @@ typedef struct BDRVTestTopState { static void bdrv_test_top_close(BlockDriverState *bs) { BdrvChild *c, *next_c; + + bdrv_graph_wrlock(NULL); QLIST_FOREACH_SAFE(c, &bs->children, next, next_c) { bdrv_unref_child(bs, c); } + bdrv_graph_wrunlock(); } static int coroutine_fn GRAPH_RDLOCK @@ -1024,7 +1027,7 @@ static void coroutine_fn test_co_delete_by_drain(void *opaque) } else { BdrvChild *c, *next_c; QLIST_FOREACH_SAFE(c, &bs->children, next, next_c) { - bdrv_unref_child(bs, c); + bdrv_co_unref_child(bs, c); } } @@ -1162,10 +1165,11 @@ static void detach_indirect_bh(void *opaque) struct detach_by_parent_data *data = opaque; bdrv_dec_in_flight(data->child_b->bs); + + bdrv_graph_wrlock(NULL); bdrv_unref_child(data->parent_b, data->child_b); bdrv_ref(data->c); - bdrv_graph_wrlock(NULL); data->child_c = bdrv_attach_child(data->parent_b, data->c, "PB-C", &child_of_bds, BDRV_CHILD_DATA, &error_abort); -- cgit v1.1 From 9def6082cf885fbb2e8e719d5055109c8a04b885 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 11 Sep 2023 11:46:20 +0200 Subject: block: Mark bdrv_add/del_child() and caller GRAPH_WRLOCK The functions read the parents list in the generic block layer, so we need to hold the graph lock already there. The BlockDriver implementations actually modify the graph, so it has to be a writer lock. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Stefan Hajnoczi Message-ID: <20230911094620.45040-22-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- block/quorum.c | 23 ++++++----------------- blockdev.c | 17 +++++++++++------ include/block/block-global-state.h | 8 +++++--- include/block/block_int-common.h | 9 +++++---- 4 files changed, 27 insertions(+), 30 deletions(-) diff --git a/block/quorum.c b/block/quorum.c index 620a50b..05220ca 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -1066,8 +1066,8 @@ static void quorum_close(BlockDriverState *bs) g_free(s->children); } -static void quorum_add_child(BlockDriverState *bs, BlockDriverState *child_bs, - Error **errp) +static void GRAPH_WRLOCK +quorum_add_child(BlockDriverState *bs, BlockDriverState *child_bs, Error **errp) { BDRVQuorumState *s = bs->opaque; BdrvChild *child; @@ -1093,29 +1093,22 @@ static void quorum_add_child(BlockDriverState *bs, BlockDriverState *child_bs, } s->next_child_index++; - bdrv_drained_begin(bs); - /* We can safely add the child now */ bdrv_ref(child_bs); - bdrv_graph_wrlock(child_bs); child = bdrv_attach_child(bs, child_bs, indexstr, &child_of_bds, BDRV_CHILD_DATA, errp); - bdrv_graph_wrunlock(); if (child == NULL) { s->next_child_index--; - goto out; + return; } s->children = g_renew(BdrvChild *, s->children, s->num_children + 1); s->children[s->num_children++] = child; quorum_refresh_flags(bs); - -out: - bdrv_drained_end(bs); } -static void quorum_del_child(BlockDriverState *bs, BdrvChild *child, - Error **errp) +static void GRAPH_WRLOCK +quorum_del_child(BlockDriverState *bs, BdrvChild *child, Error **errp) { BDRVQuorumState *s = bs->opaque; char indexstr[INDEXSTR_LEN]; @@ -1145,18 +1138,14 @@ static void quorum_del_child(BlockDriverState *bs, BdrvChild *child, s->next_child_index--; } - bdrv_drained_begin(bs); - /* We can safely remove this child now */ memmove(&s->children[i], &s->children[i + 1], (s->num_children - i - 1) * sizeof(BdrvChild *)); s->children = g_renew(BdrvChild *, s->children, --s->num_children); - bdrv_graph_wrlock(NULL); + bdrv_unref_child(bs, child); - bdrv_graph_wrunlock(); quorum_refresh_flags(bs); - bdrv_drained_end(bs); } static void quorum_gather_child_options(BlockDriverState *bs, QDict *target, diff --git a/blockdev.c b/blockdev.c index 372eaf1..325b7a3 100644 --- a/blockdev.c +++ b/blockdev.c @@ -3545,8 +3545,8 @@ out: aio_context_release(aio_context); } -static BdrvChild *bdrv_find_child(BlockDriverState *parent_bs, - const char *child_name) +static BdrvChild * GRAPH_RDLOCK +bdrv_find_child(BlockDriverState *parent_bs, const char *child_name) { BdrvChild *child; @@ -3565,9 +3565,11 @@ void qmp_x_blockdev_change(const char *parent, const char *child, BlockDriverState *parent_bs, *new_bs = NULL; BdrvChild *p_child; + bdrv_graph_wrlock(NULL); + parent_bs = bdrv_lookup_bs(parent, parent, errp); if (!parent_bs) { - return; + goto out; } if (!child == !node) { @@ -3576,7 +3578,7 @@ void qmp_x_blockdev_change(const char *parent, const char *child, } else { error_setg(errp, "Either child or node must be specified"); } - return; + goto out; } if (child) { @@ -3584,7 +3586,7 @@ void qmp_x_blockdev_change(const char *parent, const char *child, if (!p_child) { error_setg(errp, "Node '%s' does not have child '%s'", parent, child); - return; + goto out; } bdrv_del_child(parent_bs, p_child, errp); } @@ -3593,10 +3595,13 @@ void qmp_x_blockdev_change(const char *parent, const char *child, new_bs = bdrv_find_node(node); if (!new_bs) { error_setg(errp, "Node '%s' not found", node); - return; + goto out; } bdrv_add_child(parent_bs, new_bs, errp); } + +out: + bdrv_graph_wrunlock(); } BlockJobInfoList *qmp_query_block_jobs(Error **errp) diff --git a/include/block/block-global-state.h b/include/block/block-global-state.h index 0f6df8f..f31660c 100644 --- a/include/block/block-global-state.h +++ b/include/block/block-global-state.h @@ -276,9 +276,11 @@ int bdrv_try_change_aio_context(BlockDriverState *bs, AioContext *ctx, int bdrv_probe_blocksizes(BlockDriverState *bs, BlockSizes *bsz); int bdrv_probe_geometry(BlockDriverState *bs, HDGeometry *geo); -void bdrv_add_child(BlockDriverState *parent, BlockDriverState *child, - Error **errp); -void bdrv_del_child(BlockDriverState *parent, BdrvChild *child, Error **errp); +void GRAPH_WRLOCK +bdrv_add_child(BlockDriverState *parent, BlockDriverState *child, Error **errp); + +void GRAPH_WRLOCK +bdrv_del_child(BlockDriverState *parent, BdrvChild *child, Error **errp); /** * diff --git a/include/block/block_int-common.h b/include/block/block_int-common.h index 3feb67e..2ca3758 100644 --- a/include/block/block_int-common.h +++ b/include/block/block_int-common.h @@ -393,10 +393,11 @@ struct BlockDriver { */ int (*bdrv_probe_geometry)(BlockDriverState *bs, HDGeometry *geo); - void (*bdrv_add_child)(BlockDriverState *parent, BlockDriverState *child, - Error **errp); - void (*bdrv_del_child)(BlockDriverState *parent, BdrvChild *child, - Error **errp); + void GRAPH_WRLOCK_PTR (*bdrv_add_child)( + BlockDriverState *parent, BlockDriverState *child, Error **errp); + + void GRAPH_WRLOCK_PTR (*bdrv_del_child)( + BlockDriverState *parent, BdrvChild *child, Error **errp); /** * Informs the block driver that a permission change is intended. The -- cgit v1.1 From 2848289168fbbd9a6855c84ec8fde8929a2b042b Mon Sep 17 00:00:00 2001 From: Andrey Drobyshev via Date: Fri, 8 Sep 2023 00:02:25 +0300 Subject: block: add BDRV_BLOCK_COMPRESSED flag for bdrv_block_status() Functions qcow2_get_host_offset(), get_cluster_offset(), vmdk_co_block_status() explicitly report compressed cluster types when data is compressed. However, this information is never passed further. Let's make use of it by adding new BDRV_BLOCK_COMPRESSED flag for bdrv_block_status(), so that caller may know that the data range is compressed. In particular, we're going to use this flag to tweak "qemu-img map" output. This new flag is only being utilized by qcow, qcow2 and vmdk formats, as only those support compression. Reviewed-by: Denis V. Lunev Reviewed-by: Hanna Czenczek Signed-off-by: Andrey Drobyshev Message-ID: <20230907210226.953821-2-andrey.drobyshev@virtuozzo.com> Reviewed-by: Kevin Wolf Signed-off-by: Kevin Wolf --- block/qcow.c | 5 ++++- block/qcow2.c | 3 +++ block/vmdk.c | 2 ++ include/block/block-common.h | 3 +++ 4 files changed, 12 insertions(+), 1 deletion(-) diff --git a/block/qcow.c b/block/qcow.c index 577bd70..d56d24a 100644 --- a/block/qcow.c +++ b/block/qcow.c @@ -549,7 +549,10 @@ qcow_co_block_status(BlockDriverState *bs, bool want_zero, if (!cluster_offset) { return 0; } - if ((cluster_offset & QCOW_OFLAG_COMPRESSED) || s->crypto) { + if (cluster_offset & QCOW_OFLAG_COMPRESSED) { + return BDRV_BLOCK_DATA | BDRV_BLOCK_COMPRESSED; + } + if (s->crypto) { return BDRV_BLOCK_DATA; } *map = cluster_offset | index_in_cluster; diff --git a/block/qcow2.c b/block/qcow2.c index 071004b..af43d59d 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -2162,6 +2162,9 @@ qcow2_co_block_status(BlockDriverState *bs, bool want_zero, int64_t offset, { status |= BDRV_BLOCK_RECURSE; } + if (type == QCOW2_SUBCLUSTER_COMPRESSED) { + status |= BDRV_BLOCK_COMPRESSED; + } return status; } diff --git a/block/vmdk.c b/block/vmdk.c index 78baa04..e90649c 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1783,6 +1783,8 @@ vmdk_co_block_status(BlockDriverState *bs, bool want_zero, if (extent->flat) { ret |= BDRV_BLOCK_RECURSE; } + } else { + ret |= BDRV_BLOCK_COMPRESSED; } *file = extent->file->bs; break; diff --git a/include/block/block-common.h b/include/block/block-common.h index 3bbc5d9..2d2af72 100644 --- a/include/block/block-common.h +++ b/include/block/block-common.h @@ -291,6 +291,8 @@ typedef enum { * layer rather than any backing, set by block layer * BDRV_BLOCK_EOF: the returned pnum covers through end of file for this * layer, set by block layer + * BDRV_BLOCK_COMPRESSED: the underlying data is compressed; only valid for + * the formats supporting compression: qcow, qcow2 * * Internal flags: * BDRV_BLOCK_RAW: for use by passthrough drivers, such as raw, to request @@ -326,6 +328,7 @@ typedef enum { #define BDRV_BLOCK_ALLOCATED 0x10 #define BDRV_BLOCK_EOF 0x20 #define BDRV_BLOCK_RECURSE 0x40 +#define BDRV_BLOCK_COMPRESSED 0x80 typedef QTAILQ_HEAD(BlockReopenQueue, BlockReopenQueueEntry) BlockReopenQueue; -- cgit v1.1 From 52b10c9c0c68e90f9503ba578f2eaf8975c1977f Mon Sep 17 00:00:00 2001 From: Andrey Drobyshev via Date: Fri, 8 Sep 2023 00:02:26 +0300 Subject: qemu-img: map: report compressed data blocks Right now "qemu-img map" reports compressed blocks as containing data but having no host offset. This is not very informative. Instead, let's add another boolean field named "compressed" in case JSON output mode is specified. This is achieved by utilizing new allocation status flag BDRV_BLOCK_COMPRESSED for bdrv_block_status(). Also update the expected qemu-iotests outputs to contain the new field. Signed-off-by: Andrey Drobyshev Message-ID: <20230907210226.953821-3-andrey.drobyshev@virtuozzo.com> Reviewed-by: Kevin Wolf Signed-off-by: Kevin Wolf --- qapi/block-core.json | 6 +- qemu-img.c | 8 +- tests/qemu-iotests/122.out | 84 +-- tests/qemu-iotests/146.out | 780 +++++++++++------------ tests/qemu-iotests/154.out | 194 +++--- tests/qemu-iotests/179.out | 178 +++--- tests/qemu-iotests/209.out | 4 +- tests/qemu-iotests/221.out | 16 +- tests/qemu-iotests/223.out | 60 +- tests/qemu-iotests/241.out | 10 +- tests/qemu-iotests/244.out | 24 +- tests/qemu-iotests/252.out | 10 +- tests/qemu-iotests/253.out | 20 +- tests/qemu-iotests/274.out | 48 +- tests/qemu-iotests/tests/nbd-qemu-allocation.out | 16 +- tests/qemu-iotests/tests/qemu-img-bitmaps.out | 24 +- 16 files changed, 744 insertions(+), 738 deletions(-) diff --git a/qapi/block-core.json b/qapi/block-core.json index 2b1d493..89751d8 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -409,6 +409,8 @@ # # @zero: whether the virtual blocks read as zeroes # +# @compressed: true if the data is stored compressed (since 8.2) +# # @depth: number of layers (0 = top image, 1 = top image's backing # file, ..., n - 1 = bottom image (where n is the number of images # in the chain)) before reaching one for which the range is @@ -426,8 +428,8 @@ ## { 'struct': 'MapEntry', 'data': {'start': 'int', 'length': 'int', 'data': 'bool', - 'zero': 'bool', 'depth': 'int', 'present': 'bool', - '*offset': 'int', '*filename': 'str' } } + 'zero': 'bool', 'compressed': 'bool', 'depth': 'int', + 'present': 'bool', '*offset': 'int', '*filename': 'str' } } ## # @BlockdevCacheInfo: diff --git a/qemu-img.c b/qemu-img.c index 0756dbb..a48edb7 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -3108,10 +3108,12 @@ static int dump_map_entry(OutputFormat output_format, MapEntry *e, case OFORMAT_JSON: printf("{ \"start\": %"PRId64", \"length\": %"PRId64"," " \"depth\": %"PRId64", \"present\": %s, \"zero\": %s," - " \"data\": %s", e->start, e->length, e->depth, + " \"data\": %s, \"compressed\": %s", + e->start, e->length, e->depth, e->present ? "true" : "false", e->zero ? "true" : "false", - e->data ? "true" : "false"); + e->data ? "true" : "false", + e->compressed ? "true" : "false"); if (e->has_offset) { printf(", \"offset\": %"PRId64"", e->offset); } @@ -3172,6 +3174,7 @@ static int get_block_status(BlockDriverState *bs, int64_t offset, .length = bytes, .data = !!(ret & BDRV_BLOCK_DATA), .zero = !!(ret & BDRV_BLOCK_ZERO), + .compressed = !!(ret & BDRV_BLOCK_COMPRESSED), .offset = map, .has_offset = has_offset, .depth = depth, @@ -3189,6 +3192,7 @@ static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next) } if (curr->zero != next->zero || curr->data != next->data || + curr->compressed != next->compressed || curr->depth != next->depth || curr->present != next->present || !curr->filename != !next->filename || diff --git a/tests/qemu-iotests/122.out b/tests/qemu-iotests/122.out index e18766e..6a1aa3f 100644 --- a/tests/qemu-iotests/122.out +++ b/tests/qemu-iotests/122.out @@ -67,12 +67,12 @@ read 65536/65536 bytes at offset 4194304 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 65536/65536 bytes at offset 8388608 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true}, -{ "start": 65536, "length": 4128768, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 4194304, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true}, -{ "start": 4259840, "length": 4128768, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 8388608, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true}, -{ "start": 8454144, "length": 4128768, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}, +{ "start": 65536, "length": 4128768, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 4194304, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}, +{ "start": 4259840, "length": 4128768, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 8388608, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}, +{ "start": 8454144, "length": 4128768, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] read 65536/65536 bytes at offset 0 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 65536/65536 bytes at offset 4194304 @@ -94,12 +94,12 @@ wrote 1024/1024 bytes at offset 1046528 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 1024/1024 bytes at offset 0 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true}, -{ "start": 65536, "length": 65536, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 131072, "length": 196608, "depth": 0, "present": true, "zero": false, "data": true}, -{ "start": 327680, "length": 655360, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 983040, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true}, -{ "start": 1048576, "length": 1046528, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}, +{ "start": 65536, "length": 65536, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 131072, "length": 196608, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}, +{ "start": 327680, "length": 655360, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 983040, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}, +{ "start": 1048576, "length": 1046528, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] read 16384/16384 bytes at offset 0 16 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 16384/16384 bytes at offset 16384 @@ -130,14 +130,14 @@ read 3145728/3145728 bytes at offset 0 3 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 63963136/63963136 bytes at offset 3145728 61 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] +[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] convert -c -S 0: read 3145728/3145728 bytes at offset 0 3 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 63963136/63963136 bytes at offset 3145728 61 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true}] +[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}] Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=67108864 wrote 33554432/33554432 bytes at offset 0 32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) @@ -152,7 +152,7 @@ read 30408704/30408704 bytes at offset 3145728 29 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 33554432/33554432 bytes at offset 33554432 32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] +[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] convert -c -S 0 with source backing file: read 3145728/3145728 bytes at offset 0 @@ -161,7 +161,7 @@ read 30408704/30408704 bytes at offset 3145728 29 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 33554432/33554432 bytes at offset 33554432 32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true}] +[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}] convert -S 0 -B ... read 3145728/3145728 bytes at offset 0 @@ -170,7 +170,7 @@ read 30408704/30408704 bytes at offset 3145728 29 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 33554432/33554432 bytes at offset 33554432 32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] +[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] convert -c -S 0 -B ... read 3145728/3145728 bytes at offset 0 @@ -179,7 +179,7 @@ read 30408704/30408704 bytes at offset 3145728 29 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 33554432/33554432 bytes at offset 33554432 32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true}] +[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}] === Non-zero -S === @@ -196,32 +196,32 @@ wrote 1024/1024 bytes at offset 66560 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) convert -S 4k -[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 4096, "length": 4096, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 8192, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 12288, "length": 4096, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 16384, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 20480, "length": 67088384, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 4096, "length": 4096, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 8192, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 12288, "length": 4096, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 16384, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 20480, "length": 67088384, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] convert -c -S 4k -[{ "start": 0, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true}, -{ "start": 1024, "length": 7168, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 8192, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true}, -{ "start": 9216, "length": 8192, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 17408, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true}, -{ "start": 18432, "length": 67090432, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}, +{ "start": 1024, "length": 7168, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 8192, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}, +{ "start": 9216, "length": 8192, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 17408, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}, +{ "start": 18432, "length": 67090432, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] convert -S 8k -[{ "start": 0, "length": 24576, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 24576, "length": 67084288, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 24576, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 24576, "length": 67084288, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] convert -c -S 8k -[{ "start": 0, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true}, -{ "start": 1024, "length": 7168, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 8192, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true}, -{ "start": 9216, "length": 8192, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 17408, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true}, -{ "start": 18432, "length": 67090432, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}, +{ "start": 1024, "length": 7168, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 8192, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}, +{ "start": 9216, "length": 8192, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 17408, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}, +{ "start": 18432, "length": 67090432, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] === -n to a non-zero image === @@ -235,18 +235,18 @@ Images are identical. Formatting 'TEST_DIR/t.IMGFMT.orig', fmt=IMGFMT size=67108864 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 -[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 -[{ "start": 0, "length": 67108864, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 67108864, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] === -n to an empty image with a backing file === Formatting 'TEST_DIR/t.IMGFMT.orig', fmt=IMGFMT size=67108864 Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=67108864 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT -[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT -[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true, "offset": 327680}] +[{ "start": 0, "length": 67108864, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": 327680}] === -n -B to an image without a backing file === diff --git a/tests/qemu-iotests/146.out b/tests/qemu-iotests/146.out index dfd6c77..a488041 100644 --- a/tests/qemu-iotests/146.out +++ b/tests/qemu-iotests/146.out @@ -2,414 +2,414 @@ QA output created by 146 === Testing VPC Autodetect === -[{ "start": 0, "length": 136363130880, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 136363130880, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === Testing VPC with current_size force === -[{ "start": 0, "length": 136365211648, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 136365211648, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === Testing VPC with chs force === -[{ "start": 0, "length": 136363130880, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 136363130880, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === Testing Hyper-V Autodetect === -[{ "start": 0, "length": 136365211648, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 136365211648, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === Testing Hyper-V with current_size force === -[{ "start": 0, "length": 136365211648, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 136365211648, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === Testing Hyper-V with chs force === -[{ "start": 0, "length": 136363130880, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 136363130880, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === Testing d2v Autodetect === -[{ "start": 0, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 4194304, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 6291456, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 8388608, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 10485760, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 12582912, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 14680064, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 16777216, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 18874368, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 20971520, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 23068672, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 25165824, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 27262976, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 29360128, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 31457280, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 33554432, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 35651584, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 37748736, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 39845888, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 41943040, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 44040192, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 46137344, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 48234496, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 50331648, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 52428800, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 54525952, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 56623104, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 58720256, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 60817408, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 62914560, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 65011712, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 67108864, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 69206016, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 71303168, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 73400320, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 75497472, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 77594624, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 79691776, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 81788928, "length": 2097152, "depth": 0, "present": true, "zero": false, 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2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 236978176, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 239075328, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 241172480, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 243269632, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 245366784, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 247463936, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 249561088, "length": 2097152, "depth": 0, 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+{ "start": 216006656, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 218103808, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 220200960, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 222298112, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 224395264, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 226492416, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 228589568, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 230686720, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 232783872, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 234881024, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 236978176, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 239075328, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 241172480, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 243269632, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 245366784, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 247463936, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 249561088, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 251658240, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 253755392, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 255852544, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 257949696, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 260046848, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 262144000, "length": 1310720, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] === Testing Image create, default === @@ -417,15 +417,15 @@ Formatting 'TEST_DIR/IMGFMT-create-test.IMGFMT', fmt=IMGFMT size=4294967296 === Read created image, default opts ==== -[{ "start": 0, "length": 4295467008, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 4295467008, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === Read created image, force_size_calc=chs ==== -[{ "start": 0, "length": 4295467008, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 4295467008, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === Read created image, force_size_calc=current_size ==== -[{ "start": 0, "length": 4295467008, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 4295467008, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === Testing Image create, force_size === @@ -433,13 +433,13 @@ Formatting 'TEST_DIR/IMGFMT-create-test.IMGFMT', fmt=IMGFMT size=4294967296 === Read created image, default opts ==== -[{ "start": 0, "length": 4294967296, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 4294967296, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === Read created image, force_size_calc=chs ==== -[{ "start": 0, "length": 4294967296, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 4294967296, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === Read created image, force_size_calc=current_size ==== -[{ "start": 0, "length": 4294967296, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 4294967296, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] *** done diff --git a/tests/qemu-iotests/154.out b/tests/qemu-iotests/154.out index 1fa7ffc..0199269 100644 --- a/tests/qemu-iotests/154.out +++ b/tests/qemu-iotests/154.out @@ -11,14 +11,14 @@ wrote 2048/2048 bytes at offset 17408 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2048/2048 bytes at offset 27648 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 4096, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 8192, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 12288, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 16384, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 20480, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 24576, "length": 8192, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 32768, "length": 134184960, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 4096, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 8192, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 12288, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 16384, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 20480, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 24576, "length": 8192, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 32768, "length": 134184960, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] == backing file contains non-zero data before write_zeroes == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 @@ -41,11 +41,11 @@ read 1024/1024 bytes at offset 65536 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 67584 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 32768, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 32768, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 36864, "length": 28672, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 65536, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 69632, "length": 134148096, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 32768, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 32768, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 36864, "length": 28672, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 65536, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 69632, "length": 134148096, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] == backing file contains non-zero data after write_zeroes == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 @@ -68,11 +68,11 @@ read 1024/1024 bytes at offset 44032 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 3072/3072 bytes at offset 40960 3 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 32768, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 32768, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 36864, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 40960, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 45056, "length": 134172672, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 32768, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 32768, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 36864, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 40960, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 45056, "length": 134172672, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] == write_zeroes covers non-zero data == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 @@ -101,15 +101,15 @@ wrote 2048/2048 bytes at offset 29696 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 4096/4096 bytes at offset 28672 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 4096, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 8192, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 12288, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 16384, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 20480, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 24576, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 28672, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 32768, "length": 134184960, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 4096, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 8192, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 12288, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 16384, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 20480, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 24576, "length": 4096, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 28672, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 32768, "length": 134184960, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] == spanning two clusters, non-zero before request == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 @@ -142,16 +142,16 @@ read 1024/1024 bytes at offset 67584 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 5120/5120 bytes at offset 68608 5 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 32768, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 32768, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 36864, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 40960, "length": 8192, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 49152, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 53248, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 57344, "length": 8192, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 65536, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 69632, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 73728, "length": 134144000, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 32768, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 32768, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 36864, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 40960, "length": 8192, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 49152, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 53248, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 57344, "length": 8192, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 65536, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 69632, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 73728, "length": 134144000, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] == spanning two clusters, non-zero after request == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 @@ -184,16 +184,16 @@ read 7168/7168 bytes at offset 65536 7 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 72704 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 32768, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 32768, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 36864, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 40960, "length": 8192, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 49152, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 53248, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 57344, "length": 8192, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 65536, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 69632, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 73728, "length": 134144000, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 32768, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 32768, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 36864, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 40960, "length": 8192, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 49152, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 53248, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 57344, "length": 8192, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 65536, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 69632, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 73728, "length": 134144000, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] == spanning two clusters, partially overwriting backing file == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 @@ -212,8 +212,8 @@ read 1024/1024 bytes at offset 5120 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 6144 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 8192, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 8192, "length": 134209536, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 8192, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 8192, "length": 134209536, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] == spanning multiple clusters, non-zero in first cluster == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 @@ -226,10 +226,10 @@ read 2048/2048 bytes at offset 65536 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 10240/10240 bytes at offset 67584 10 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 65536, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 65536, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 69632, "length": 8192, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 77824, "length": 134139904, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 65536, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 65536, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 69632, "length": 8192, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 77824, "length": 134139904, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] == spanning multiple clusters, non-zero in intermediate cluster == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 @@ -240,9 +240,9 @@ wrote 7168/7168 bytes at offset 67584 7 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 12288/12288 bytes at offset 65536 12 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 65536, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 65536, "length": 12288, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 77824, "length": 134139904, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 65536, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 65536, "length": 12288, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 77824, "length": 134139904, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] == spanning multiple clusters, non-zero in final cluster == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 @@ -255,10 +255,10 @@ read 10240/10240 bytes at offset 65536 10 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2048/2048 bytes at offset 75776 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 65536, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 65536, "length": 8192, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 73728, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 77824, "length": 134139904, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 65536, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 65536, "length": 8192, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 73728, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 77824, "length": 134139904, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] == spanning multiple clusters, partially overwriting backing file == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728 @@ -277,88 +277,88 @@ read 2048/2048 bytes at offset 74752 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 76800 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 65536, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 65536, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 69632, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 73728, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 77824, "length": 134139904, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 65536, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 65536, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 69632, "length": 4096, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 73728, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 77824, "length": 134139904, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] == unaligned image tail cluster, no allocation needed == Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 wrote 512/512 bytes at offset 134217728 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 2048/2048 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 134217728, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 wrote 512/512 bytes at offset 134219264 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 2048/2048 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 134217728, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 wrote 1024/1024 bytes at offset 134218240 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 2048/2048 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 134217728, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 wrote 2048/2048 bytes at offset 134217728 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 2048/2048 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 134217728, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134218752 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT wrote 512/512 bytes at offset 134217728 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 2048/2048 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT wrote 512/512 bytes at offset 134219264 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 2048/2048 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT wrote 1024/1024 bytes at offset 134218240 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 2048/2048 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT wrote 2048/2048 bytes at offset 134217728 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 2048/2048 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] wrote 512/512 bytes at offset 134217728 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT wrote 512/512 bytes at offset 134217728 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 2048/2048 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT wrote 512/512 bytes at offset 134219264 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 2048/2048 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT wrote 1024/1024 bytes at offset 134218240 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 2048/2048 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT wrote 2048/2048 bytes at offset 134217728 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 2048/2048 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134218752 wrote 1024/1024 bytes at offset 134217728 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) @@ -369,15 +369,15 @@ read 512/512 bytes at offset 134217728 read 512/512 bytes at offset 134218240 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 1024/1024 bytes allocated at offset 128 MiB -[{ "start": 0, "length": 134217728, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] +[{ "start": 0, "length": 134217728, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] wrote 1024/1024 bytes at offset 134217728 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 1024/1024 bytes allocated at offset 128 MiB read 1024/1024 bytes at offset 134217728 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 134217728, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 1024, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}] +[{ "start": 0, "length": 134217728, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 1024, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}] == unaligned image tail cluster, allocation required == Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134218752 @@ -390,8 +390,8 @@ read 512/512 bytes at offset 134217728 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1536/1536 bytes at offset 134218240 1.500 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] +[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134218752 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134219776 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT wrote 512/512 bytes at offset 134218240 @@ -412,6 +412,6 @@ read 512/512 bytes at offset 134218240 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 1024/1024 bytes at offset 134218752 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] +[{ "start": 0, "length": 134217728, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 134217728, "length": 2048, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] *** done diff --git a/tests/qemu-iotests/179.out b/tests/qemu-iotests/179.out index 7cf22cd..65b909e 100644 --- a/tests/qemu-iotests/179.out +++ b/tests/qemu-iotests/179.out @@ -13,11 +13,11 @@ wrote 2097152/2097152 bytes at offset 6291456 2 MiB (0x200000) bytes not allocated at offset 4 MiB (0x400000) 2 MiB (0x200000) bytes allocated at offset 6 MiB (0x600000) 56 MiB (0x3800000) bytes not allocated at offset 8 MiB (0x800000) -[{ "start": 0, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 4194304, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 6291456, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 8388608, "length": 58720256, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 4194304, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 6291456, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 8388608, "length": 58720256, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] wrote 2097150/2097150 bytes at offset 10485761 2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2097150/2097150 bytes at offset 14680065 @@ -31,15 +31,15 @@ wrote 2097150/2097150 bytes at offset 14680065 2 MiB (0x200000) bytes not allocated at offset 12 MiB (0xc00000) 2 MiB (0x200000) bytes allocated at offset 14 MiB (0xe00000) 48 MiB (0x3000000) bytes not allocated at offset 16 MiB (0x1000000) -[{ "start": 0, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 4194304, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 6291456, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 8388608, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 10485760, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 12582912, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 14680064, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 16777216, "length": 50331648, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 4194304, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 6291456, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 8388608, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 10485760, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 12582912, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 14680064, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 16777216, "length": 50331648, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] wrote 14680064/14680064 bytes at offset 18874368 14 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2097152/2097152 bytes at offset 20971520 @@ -57,21 +57,21 @@ wrote 6291456/6291456 bytes at offset 25165824 2 MiB (0x200000) bytes not allocated at offset 16 MiB (0x1000000) 14 MiB (0xe00000) bytes allocated at offset 18 MiB (0x1200000) 32 MiB (0x2000000) bytes not allocated at offset 32 MiB (0x2000000) -[{ "start": 0, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 4194304, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 6291456, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 8388608, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 10485760, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 12582912, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 14680064, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 16777216, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 18874368, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 20971520, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 23068672, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 25165824, "length": 6291456, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 31457280, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 33554432, "length": 33554432, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 4194304, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 6291456, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 8388608, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 10485760, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 12582912, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 14680064, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 16777216, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 18874368, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 20971520, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 23068672, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 25165824, "length": 6291456, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 31457280, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 33554432, "length": 33554432, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] wrote 2097152/2097152 bytes at offset 27262976 2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2097152/2097152 bytes at offset 29360128 @@ -87,23 +87,23 @@ wrote 2097152/2097152 bytes at offset 29360128 2 MiB (0x200000) bytes not allocated at offset 16 MiB (0x1000000) 14 MiB (0xe00000) bytes allocated at offset 18 MiB (0x1200000) 32 MiB (0x2000000) bytes not allocated at offset 32 MiB (0x2000000) -[{ "start": 0, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 4194304, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 6291456, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 8388608, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 10485760, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 12582912, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 14680064, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 16777216, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 18874368, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 20971520, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 23068672, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 25165824, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 27262976, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 29360128, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 31457280, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 33554432, "length": 33554432, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 4194304, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 6291456, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 8388608, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 10485760, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 12582912, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 14680064, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 16777216, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 18874368, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 20971520, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 23068672, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 25165824, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 27262976, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 29360128, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 31457280, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 33554432, "length": 33554432, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] wrote 8388608/8388608 bytes at offset 33554432 8 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 2097152/2097152 bytes at offset 35651584 @@ -121,24 +121,24 @@ wrote 2097152/2097152 bytes at offset 37748736 2 MiB (0x200000) bytes not allocated at offset 16 MiB (0x1000000) 22 MiB (0x1600000) bytes allocated at offset 18 MiB (0x1200000) 24 MiB (0x1800000) bytes not allocated at offset 40 MiB (0x2800000) -[{ "start": 0, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 4194304, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 6291456, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 8388608, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 10485760, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 12582912, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 14680064, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 16777216, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 18874368, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 20971520, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 23068672, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 25165824, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 27262976, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 29360128, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 31457280, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 33554432, "length": 8388608, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 41943040, "length": 25165824, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 4194304, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 6291456, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 8388608, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 10485760, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 12582912, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 14680064, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 16777216, "length": 2097152, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 18874368, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 20971520, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 23068672, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 25165824, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 27262976, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 29360128, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 31457280, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 33554432, "length": 8388608, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 41943040, "length": 25165824, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] wrote 8388608/8388608 bytes at offset 41943040 8 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) wrote 8388608/8388608 bytes at offset 50331648 @@ -162,31 +162,31 @@ wrote 2097152/2097152 bytes at offset 62914560 4 MiB (0x400000) bytes not allocated at offset 54 MiB (0x3600000) 4 MiB (0x400000) bytes allocated at offset 58 MiB (0x3a00000) 2 MiB (0x200000) bytes not allocated at offset 62 MiB (0x3e00000) -[{ "start": 0, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 2097152, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false}, -{ "start": 4194304, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 6291456, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false}, -{ "start": 8388608, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 10485760, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false}, -{ "start": 12582912, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 14680064, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false}, -{ "start": 16777216, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 18874368, "length": 2097152, "depth": 1, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 20971520, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false}, -{ "start": 23068672, "length": 2097152, "depth": 1, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 25165824, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 27262976, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false}, -{ "start": 29360128, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 31457280, "length": 2097152, "depth": 1, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 33554432, "length": 10485760, "depth": 1, "present": true, "zero": true, "data": false}, -{ "start": 44040192, "length": 4194304, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 48234496, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false}, -{ "start": 50331648, "length": 2097152, "depth": 1, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 52428800, "length": 4194304, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 56623104, "length": 2097152, "depth": 1, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 58720256, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 60817408, "length": 4194304, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 65011712, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 2097152, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 4194304, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 6291456, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 8388608, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 10485760, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 12582912, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 14680064, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 16777216, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 18874368, "length": 2097152, "depth": 1, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 20971520, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 23068672, "length": 2097152, "depth": 1, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 25165824, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 27262976, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 29360128, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 31457280, "length": 2097152, "depth": 1, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 33554432, "length": 10485760, "depth": 1, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 44040192, "length": 4194304, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 48234496, "length": 2097152, "depth": 1, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 50331648, "length": 2097152, "depth": 1, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 52428800, "length": 4194304, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 56623104, "length": 2097152, "depth": 1, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 58720256, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 60817408, "length": 4194304, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 65011712, "length": 2097152, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] No errors were found on the image. No errors were found on the image. diff --git a/tests/qemu-iotests/209.out b/tests/qemu-iotests/209.out index 515906a..79c4103 100644 --- a/tests/qemu-iotests/209.out +++ b/tests/qemu-iotests/209.out @@ -1,4 +1,4 @@ -[{ "start": 0, "length": 524288, "depth": 0, "present": true, "zero": false, "data": true, "offset": 0}, -{ "start": 524288, "length": 524288, "depth": 0, "present": true, "zero": true, "data": false, "offset": 524288}] +[{ "start": 0, "length": 524288, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": 0}, +{ "start": 524288, "length": 524288, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": 524288}] done. diff --git a/tests/qemu-iotests/221.out b/tests/qemu-iotests/221.out index 9cdd171..df231c4 100644 --- a/tests/qemu-iotests/221.out +++ b/tests/qemu-iotests/221.out @@ -5,14 +5,14 @@ QA output created by 221 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=65537 discard 65537/65537 bytes at offset 0 64.001 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 66048, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}] -[{ "start": 0, "length": 66048, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}] +[{ "start": 0, "length": 66048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}] +[{ "start": 0, "length": 66048, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}] wrote 1/1 bytes at offset 65536 1 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 65536, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 65536, "length": 1, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 65537, "length": 511, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}] -[{ "start": 0, "length": 65536, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 65536, "length": 1, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 65537, "length": 511, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}] +[{ "start": 0, "length": 65536, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 65536, "length": 1, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 65537, "length": 511, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}] +[{ "start": 0, "length": 65536, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 65536, "length": 1, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 65537, "length": 511, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}] *** done diff --git a/tests/qemu-iotests/223.out b/tests/qemu-iotests/223.out index 26fb347..86a3701 100644 --- a/tests/qemu-iotests/223.out +++ b/tests/qemu-iotests/223.out @@ -120,23 +120,23 @@ read 1048576/1048576 bytes at offset 1048576 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2097152/2097152 bytes at offset 2097152 2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 4096, "length": 1044480, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 1048576, "length": 3145728, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] -[{ "start": 0, "length": 65536, "depth": 0, "present": false, "zero": false, "data": false}, -{ "start": 65536, "length": 2031616, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false}] +[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 4096, "length": 1044480, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 1048576, "length": 3145728, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] +[{ "start": 0, "length": 65536, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}, +{ "start": 65536, "length": 2031616, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}] === Contrast to small granularity dirty-bitmap === -[{ "start": 0, "length": 512, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 512, "length": 512, "depth": 0, "present": false, "zero": false, "data": false}, -{ "start": 1024, "length": 2096128, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false}] +[{ "start": 0, "length": 512, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 512, "length": 512, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}, +{ "start": 1024, "length": 2096128, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}] === Check bitmap taken from another node === -[{ "start": 0, "length": 4194304, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] +[{ "start": 0, "length": 4194304, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] === End qemu NBD server === @@ -239,23 +239,23 @@ read 1048576/1048576 bytes at offset 1048576 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) read 2097152/2097152 bytes at offset 2097152 2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 4096, "length": 1044480, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 1048576, "length": 3145728, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] -[{ "start": 0, "length": 65536, "depth": 0, "present": false, "zero": false, "data": false}, -{ "start": 65536, "length": 2031616, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false}] +[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 4096, "length": 1044480, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 1048576, "length": 3145728, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] +[{ "start": 0, "length": 65536, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}, +{ "start": 65536, "length": 2031616, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}] === Contrast to small granularity dirty-bitmap === -[{ "start": 0, "length": 512, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 512, "length": 512, "depth": 0, "present": false, "zero": false, "data": false}, -{ "start": 1024, "length": 2096128, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false}] +[{ "start": 0, "length": 512, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 512, "length": 512, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}, +{ "start": 1024, "length": 2096128, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}] === Check bitmap taken from another node === -[{ "start": 0, "length": 4194304, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] +[{ "start": 0, "length": 4194304, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] === End qemu NBD server === @@ -281,12 +281,12 @@ read 2097152/2097152 bytes at offset 2097152 === Use qemu-nbd as server === -[{ "start": 0, "length": 65536, "depth": 0, "present": false, "zero": false, "data": false}, -{ "start": 65536, "length": 2031616, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false}] -[{ "start": 0, "length": 512, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 512, "length": 512, "depth": 0, "present": false, "zero": false, "data": false}, -{ "start": 1024, "length": 11321, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] -[{ "start": 12345, "length": 2084807, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false}] +[{ "start": 0, "length": 65536, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}, +{ "start": 65536, "length": 2031616, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}] +[{ "start": 0, "length": 512, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 512, "length": 512, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}, +{ "start": 1024, "length": 11321, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] +[{ "start": 12345, "length": 2084807, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}] *** done diff --git a/tests/qemu-iotests/241.out b/tests/qemu-iotests/241.out index 88e8cfc..7946c28 100644 --- a/tests/qemu-iotests/241.out +++ b/tests/qemu-iotests/241.out @@ -6,8 +6,8 @@ exports available: 1 export: '' size: 1024 min block: 1 -[{ "start": 0, "length": 1000, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 1000, "length": 24, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}] +[{ "start": 0, "length": 1000, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 1000, "length": 24, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}] 1 KiB (0x400) bytes allocated at offset 0 bytes (0x0) === Exporting unaligned raw image, forced server sector alignment === @@ -16,7 +16,7 @@ exports available: 1 export: '' size: 1024 min block: 512 -[{ "start": 0, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] +[{ "start": 0, "length": 1024, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] 1 KiB (0x400) bytes allocated at offset 0 bytes (0x0) WARNING: Image format was not specified for 'TEST_DIR/t.raw' and probing guessed raw. Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted. @@ -28,7 +28,7 @@ exports available: 1 export: '' size: 1024 min block: 1 -[{ "start": 0, "length": 1000, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 1000, "length": 24, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}] +[{ "start": 0, "length": 1000, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 1000, "length": 24, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}] 1 KiB (0x400) bytes allocated at offset 0 bytes (0x0) *** done diff --git a/tests/qemu-iotests/244.out b/tests/qemu-iotests/244.out index 4815a48..f46cfe9 100644 --- a/tests/qemu-iotests/244.out +++ b/tests/qemu-iotests/244.out @@ -57,12 +57,12 @@ wrote 3145728/3145728 bytes at offset 3145728 3 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) No errors were found on the image. -[{ "start": 0, "length": 1048576, "depth": 0, "present": false, "zero": true, "data": false}, -{ "start": 1048576, "length": 1048576, "depth": 0, "present": true, "zero": false, "data": true, "offset": 1048576}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 4194304, "length": 1048576, "depth": 0, "present": true, "zero": true, "data": false, "offset": 4194304}, -{ "start": 5242880, "length": 1048576, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 6291456, "length": 60817408, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 1048576, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 1048576, "length": 1048576, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": 1048576}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 4194304, "length": 1048576, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": 4194304}, +{ "start": 5242880, "length": 1048576, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 6291456, "length": 60817408, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] read 1048576/1048576 bytes at offset 0 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) @@ -94,10 +94,10 @@ wrote 3145728/3145728 bytes at offset 3145728 3 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) No errors were found on the image. -[{ "start": 0, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": 0}, -{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 4194304, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "offset": 4194304}, -{ "start": 6291456, "length": 60817408, "depth": 0, "present": true, "zero": false, "data": true, "offset": 6291456}] +[{ "start": 0, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": 0}, +{ "start": 2097152, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 4194304, "length": 2097152, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": 4194304}, +{ "start": 6291456, "length": 60817408, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": 6291456}] read 1048576/1048576 bytes at offset 0 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) @@ -123,8 +123,8 @@ read 1048576/1048576 bytes at offset 0 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) Offset Length Mapped to File 0 0x100000 0 TEST_DIR/t.qcow2.data -[{ "start": 0, "length": 1048576, "depth": 0, "present": true, "zero": false, "data": true, "offset": 0}, -{ "start": 1048576, "length": 66060288, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 1048576, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": 0}, +{ "start": 1048576, "length": 66060288, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] === Copy offloading === diff --git a/tests/qemu-iotests/252.out b/tests/qemu-iotests/252.out index c578129..b1aa94c 100644 --- a/tests/qemu-iotests/252.out +++ b/tests/qemu-iotests/252.out @@ -23,8 +23,8 @@ read 131072/131072 bytes at offset 131072 read 131072/131072 bytes at offset 262144 128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 262144, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 262144, "length": 131072, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 262144, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 262144, "length": 131072, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] read 131072/131072 bytes at offset 0 128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) @@ -33,7 +33,7 @@ read 131072/131072 bytes at offset 131072 read 131072/131072 bytes at offset 262144 128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 262144, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 262144, "length": 65536, "depth": 0, "present": true, "zero": true, "data": false}, -{ "start": 327680, "length": 65536, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 262144, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 262144, "length": 65536, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}, +{ "start": 327680, "length": 65536, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] *** done diff --git a/tests/qemu-iotests/253.out b/tests/qemu-iotests/253.out index b3dca75..b458085 100644 --- a/tests/qemu-iotests/253.out +++ b/tests/qemu-iotests/253.out @@ -3,16 +3,16 @@ QA output created by 253 === Check mapping of unaligned raw image === Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048575 -[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 4096, "length": 1044480, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}] -[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 4096, "length": 1044480, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}] +[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 4096, "length": 1044480, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}] +[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 4096, "length": 1044480, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}] wrote 65535/65535 bytes at offset 983040 63.999 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 4096, "length": 978944, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 983040, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] -[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 4096, "length": 978944, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}, -{ "start": 983040, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] +[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 4096, "length": 978944, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 983040, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] +[{ "start": 0, "length": 4096, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 4096, "length": 978944, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}, +{ "start": 983040, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] *** done diff --git a/tests/qemu-iotests/274.out b/tests/qemu-iotests/274.out index acd8b16..c296733 100644 --- a/tests/qemu-iotests/274.out +++ b/tests/qemu-iotests/274.out @@ -20,18 +20,18 @@ read 1048576/1048576 bytes at offset 1048576 0/1048576 bytes allocated at offset 1 MiB === Checking map === -[{ "start": 0, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": 327680}] +[{ "start": 0, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": 327680}] Offset Length Mapped to File 0 0x200000 0x50000 TEST_DIR/PID-base -[{ "start": 0, "length": 1048576, "depth": 1, "present": true, "zero": false, "data": true, "offset": 327680}] +[{ "start": 0, "length": 1048576, "depth": 1, "present": true, "zero": false, "data": true, "compressed": false, "offset": 327680}] Offset Length Mapped to File 0 0x100000 0x50000 TEST_DIR/PID-base -[{ "start": 0, "length": 1048576, "depth": 2, "present": true, "zero": false, "data": true, "offset": 327680}, -{ "start": 1048576, "length": 1048576, "depth": 0, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 1048576, "depth": 2, "present": true, "zero": false, "data": true, "compressed": false, "offset": 327680}, +{ "start": 1048576, "length": 1048576, "depth": 0, "present": false, "zero": true, "data": false, "compressed": false}] Offset Length Mapped to File 0 0x100000 0x50000 TEST_DIR/PID-base @@ -186,8 +186,8 @@ read 65536/65536 bytes at offset 5368709120 1 GiB (0x40000000) bytes not allocated at offset 0 bytes (0x0) 7 GiB (0x1c0000000) bytes allocated at offset 1 GiB (0x40000000) -[{ "start": 0, "length": 1073741824, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 1073741824, "length": 7516192768, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 1073741824, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 1073741824, "length": 7516192768, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === preallocation=metadata === wrote 65536/65536 bytes at offset 33285996544 @@ -201,13 +201,13 @@ read 65536/65536 bytes at offset 33285996544 30 GiB (0x780000000) bytes not allocated at offset 0 bytes (0x0) 3 GiB (0xc0000000) bytes allocated at offset 30 GiB (0x780000000) -[{ "start": 0, "length": 32212254720, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 32212254720, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "offset": 327680}, -{ "start": 32749125632, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "offset": 537264128}, -{ "start": 33285996544, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "offset": 1074200576}, -{ "start": 33822867456, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "offset": 1611137024}, -{ "start": 34359738368, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "offset": 2148139008}, -{ "start": 34896609280, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "offset": 2685075456}] +[{ "start": 0, "length": 32212254720, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 32212254720, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": 327680}, +{ "start": 32749125632, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": 537264128}, +{ "start": 33285996544, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": 1074200576}, +{ "start": 33822867456, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": 1611137024}, +{ "start": 34359738368, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": 2148139008}, +{ "start": 34896609280, "length": 536870912, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": 2685075456}] === preallocation=falloc === wrote 65536/65536 bytes at offset 9437184 @@ -221,8 +221,8 @@ read 65536/65536 bytes at offset 9437184 5 MiB (0x500000) bytes not allocated at offset 0 bytes (0x0) 10 MiB (0xa00000) bytes allocated at offset 5 MiB (0x500000) -[{ "start": 0, "length": 5242880, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 5242880, "length": 10485760, "depth": 0, "present": true, "zero": false, "data": true, "offset": 327680}] +[{ "start": 0, "length": 5242880, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 5242880, "length": 10485760, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": 327680}] === preallocation=full === wrote 65536/65536 bytes at offset 11534336 @@ -236,8 +236,8 @@ read 65536/65536 bytes at offset 11534336 8 MiB (0x800000) bytes not allocated at offset 0 bytes (0x0) 4 MiB (0x400000) bytes allocated at offset 8 MiB (0x800000) -[{ "start": 0, "length": 8388608, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 8388608, "length": 4194304, "depth": 0, "present": true, "zero": false, "data": true, "offset": 327680}] +[{ "start": 0, "length": 8388608, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 8388608, "length": 4194304, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": 327680}] === preallocation=off === wrote 65536/65536 bytes at offset 259072 @@ -251,9 +251,9 @@ read 65536/65536 bytes at offset 259072 192 KiB (0x30000) bytes not allocated at offset 0 bytes (0x0) 320 KiB (0x50000) bytes allocated at offset 192 KiB (0x30000) -[{ "start": 0, "length": 196608, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 196608, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true, "offset": 327680}, -{ "start": 262144, "length": 262144, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 196608, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 196608, "length": 65536, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": 327680}, +{ "start": 262144, "length": 262144, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === preallocation=off === wrote 65536/65536 bytes at offset 344064 @@ -267,8 +267,8 @@ read 65536/65536 bytes at offset 344064 256 KiB (0x40000) bytes not allocated at offset 0 bytes (0x0) 256 KiB (0x40000) bytes allocated at offset 256 KiB (0x40000) -[{ "start": 0, "length": 262144, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 262144, "length": 262144, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 262144, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 262144, "length": 262144, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] === preallocation=off === wrote 65536/65536 bytes at offset 446464 @@ -282,6 +282,6 @@ read 65536/65536 bytes at offset 446464 256 KiB (0x40000) bytes not allocated at offset 0 bytes (0x0) 244 KiB (0x3d000) bytes allocated at offset 256 KiB (0x40000) -[{ "start": 0, "length": 262144, "depth": 1, "present": false, "zero": true, "data": false}, -{ "start": 262144, "length": 249856, "depth": 0, "present": true, "zero": true, "data": false}] +[{ "start": 0, "length": 262144, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}, +{ "start": 262144, "length": 249856, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false}] diff --git a/tests/qemu-iotests/tests/nbd-qemu-allocation.out b/tests/qemu-iotests/tests/nbd-qemu-allocation.out index 9d938db..138eb09 100644 --- a/tests/qemu-iotests/tests/nbd-qemu-allocation.out +++ b/tests/qemu-iotests/tests/nbd-qemu-allocation.out @@ -11,9 +11,9 @@ wrote 2097152/2097152 bytes at offset 1048576 === Check allocation over NBD === -[{ "start": 0, "length": 1048576, "depth": 1, "present": true, "zero": false, "data": true, "offset": 327680}, -{ "start": 1048576, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": 327680}, -{ "start": 3145728, "length": 1048576, "depth": 1, "present": false, "zero": true, "data": false}] +[{ "start": 0, "length": 1048576, "depth": 1, "present": true, "zero": false, "data": true, "compressed": false, "offset": 327680}, +{ "start": 1048576, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": 327680}, +{ "start": 3145728, "length": 1048576, "depth": 1, "present": false, "zero": true, "data": false, "compressed": false}] exports available: 1 export: '' size: 4194304 @@ -24,9 +24,9 @@ exports available: 1 available meta contexts: 2 base:allocation qemu:allocation-depth -[{ "start": 0, "length": 3145728, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 3145728, "length": 1048576, "depth": 0, "present": true, "zero": true, "data": false, "offset": OFFSET}] -[{ "start": 0, "length": 1048576, "depth": 0, "present": true, "zero": true, "data": true, "offset": OFFSET}, -{ "start": 1048576, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false}, -{ "start": 3145728, "length": 1048576, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] +[{ "start": 0, "length": 3145728, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 3145728, "length": 1048576, "depth": 0, "present": true, "zero": true, "data": false, "compressed": false, "offset": OFFSET}] +[{ "start": 0, "length": 1048576, "depth": 0, "present": true, "zero": true, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 1048576, "length": 2097152, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}, +{ "start": 3145728, "length": 1048576, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] *** done diff --git a/tests/qemu-iotests/tests/qemu-img-bitmaps.out b/tests/qemu-iotests/tests/qemu-img-bitmaps.out index e851f03..74b81f7 100644 --- a/tests/qemu-iotests/tests/qemu-img-bitmaps.out +++ b/tests/qemu-iotests/tests/qemu-img-bitmaps.out @@ -103,18 +103,18 @@ Format specific information: === Check bitmap contents === -[{ "start": 0, "length": 3145728, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 3145728, "length": 1048576, "depth": 0, "present": false, "zero": false, "data": false}, -{ "start": 4194304, "length": 6291456, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] -[{ "start": 0, "length": 1048576, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 1048576, "length": 1048576, "depth": 0, "present": false, "zero": false, "data": false}, -{ "start": 2097152, "length": 8388608, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] -[{ "start": 0, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 2097152, "length": 1048576, "depth": 0, "present": false, "zero": false, "data": false}, -{ "start": 3145728, "length": 7340032, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] -[{ "start": 0, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}, -{ "start": 2097152, "length": 1048576, "depth": 0, "present": false, "zero": false, "data": false}, -{ "start": 3145728, "length": 7340032, "depth": 0, "present": true, "zero": false, "data": true, "offset": OFFSET}] +[{ "start": 0, "length": 3145728, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 3145728, "length": 1048576, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}, +{ "start": 4194304, "length": 6291456, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] +[{ "start": 0, "length": 1048576, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 1048576, "length": 1048576, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}, +{ "start": 2097152, "length": 8388608, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] +[{ "start": 0, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 2097152, "length": 1048576, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}, +{ "start": 3145728, "length": 7340032, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] +[{ "start": 0, "length": 2097152, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}, +{ "start": 2097152, "length": 1048576, "depth": 0, "present": false, "zero": false, "data": false, "compressed": false}, +{ "start": 3145728, "length": 7340032, "depth": 0, "present": true, "zero": false, "data": true, "compressed": false, "offset": OFFSET}] === Check handling of inconsistent bitmap === -- cgit v1.1 From 652b0dd80815cdb03db9320572be1cc9f9f664a1 Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Tue, 12 Sep 2023 19:10:33 -0400 Subject: block: remove AIOCBInfo->get_aio_context() The synchronous bdrv_aio_cancel() function needs the acb's AioContext so it can call aio_poll() to wait for cancellation. It turns out that all users run under the BQL in the main AioContext, so this callback is not needed. Remove the callback, mark bdrv_aio_cancel() GLOBAL_STATE_CODE just like its blk_aio_cancel() caller, and poll the main loop AioContext. The purpose of this cleanup is to identify bdrv_aio_cancel() as an API that does not work with the multi-queue block layer. Signed-off-by: Stefan Hajnoczi Message-ID: <20230912231037.826804-2-stefanha@redhat.com> Reviewed-by: Kevin Wolf Reviewed-by: Eric Blake Reviewed-by: Klaus Jensen Signed-off-by: Kevin Wolf --- block/block-backend.c | 17 ----------------- block/io.c | 23 ++++++++--------------- hw/nvme/ctrl.c | 7 ------- include/block/aio.h | 1 - include/block/block-global-state.h | 2 ++ include/block/block-io.h | 1 - softmmu/dma-helpers.c | 8 -------- util/thread-pool.c | 8 -------- 8 files changed, 10 insertions(+), 57 deletions(-) diff --git a/block/block-backend.c b/block/block-backend.c index c2636f4..24b9449 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -33,8 +33,6 @@ #define NOT_DONE 0x7fffffff /* used while emulated sync operation in progress */ -static AioContext *blk_aiocb_get_aio_context(BlockAIOCB *acb); - typedef struct BlockBackendAioNotifier { void (*attached_aio_context)(AioContext *new_context, void *opaque); void (*detach_aio_context)(void *opaque); @@ -103,7 +101,6 @@ typedef struct BlockBackendAIOCB { } BlockBackendAIOCB; static const AIOCBInfo block_backend_aiocb_info = { - .get_aio_context = blk_aiocb_get_aio_context, .aiocb_size = sizeof(BlockBackendAIOCB), }; @@ -1562,16 +1559,8 @@ typedef struct BlkAioEmAIOCB { bool has_returned; } BlkAioEmAIOCB; -static AioContext *blk_aio_em_aiocb_get_aio_context(BlockAIOCB *acb_) -{ - BlkAioEmAIOCB *acb = container_of(acb_, BlkAioEmAIOCB, common); - - return blk_get_aio_context(acb->rwco.blk); -} - static const AIOCBInfo blk_aio_em_aiocb_info = { .aiocb_size = sizeof(BlkAioEmAIOCB), - .get_aio_context = blk_aio_em_aiocb_get_aio_context, }; static void blk_aio_complete(BlkAioEmAIOCB *acb) @@ -2451,12 +2440,6 @@ AioContext *blk_get_aio_context(BlockBackend *blk) return blk->ctx; } -static AioContext *blk_aiocb_get_aio_context(BlockAIOCB *acb) -{ - BlockBackendAIOCB *blk_acb = DO_UPCAST(BlockBackendAIOCB, common, acb); - return blk_get_aio_context(blk_acb->blk); -} - int blk_set_aio_context(BlockBackend *blk, AioContext *new_context, Error **errp) { diff --git a/block/io.c b/block/io.c index ba23a9b..209a6da 100644 --- a/block/io.c +++ b/block/io.c @@ -2950,25 +2950,18 @@ int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf, /**************************************************************/ /* async I/Os */ +/** + * Synchronously cancels an acb. Must be called with the BQL held and the acb + * must be processed with the BQL held too (IOThreads are not allowed). + * + * Use bdrv_aio_cancel_async() instead when possible. + */ void bdrv_aio_cancel(BlockAIOCB *acb) { - IO_CODE(); + GLOBAL_STATE_CODE(); qemu_aio_ref(acb); bdrv_aio_cancel_async(acb); - while (acb->refcnt > 1) { - if (acb->aiocb_info->get_aio_context) { - aio_poll(acb->aiocb_info->get_aio_context(acb), true); - } else if (acb->bs) { - /* qemu_aio_ref and qemu_aio_unref are not thread-safe, so - * assert that we're not using an I/O thread. Thread-safe - * code should use bdrv_aio_cancel_async exclusively. - */ - assert(bdrv_get_aio_context(acb->bs) == qemu_get_aio_context()); - aio_poll(bdrv_get_aio_context(acb->bs), true); - } else { - abort(); - } - } + AIO_WAIT_WHILE_UNLOCKED(NULL, acb->refcnt > 1); qemu_aio_unref(acb); } diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 90687b1..0326535 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -2130,11 +2130,6 @@ static inline bool nvme_is_write(NvmeRequest *req) rw->opcode == NVME_CMD_WRITE_ZEROES; } -static AioContext *nvme_get_aio_context(BlockAIOCB *acb) -{ - return qemu_get_aio_context(); -} - static void nvme_misc_cb(void *opaque, int ret) { NvmeRequest *req = opaque; @@ -3302,7 +3297,6 @@ static void nvme_flush_cancel(BlockAIOCB *acb) static const AIOCBInfo nvme_flush_aiocb_info = { .aiocb_size = sizeof(NvmeFlushAIOCB), .cancel_async = nvme_flush_cancel, - .get_aio_context = nvme_get_aio_context, }; static void nvme_do_flush(NvmeFlushAIOCB *iocb); @@ -6478,7 +6472,6 @@ static void nvme_format_cancel(BlockAIOCB *aiocb) static const AIOCBInfo nvme_format_aiocb_info = { .aiocb_size = sizeof(NvmeFormatAIOCB), .cancel_async = nvme_format_cancel, - .get_aio_context = nvme_get_aio_context, }; static void nvme_format_set(NvmeNamespace *ns, uint8_t lbaf, uint8_t mset, diff --git a/include/block/aio.h b/include/block/aio.h index 32042e8..bcc165c 100644 --- a/include/block/aio.h +++ b/include/block/aio.h @@ -31,7 +31,6 @@ typedef void BlockCompletionFunc(void *opaque, int ret); typedef struct AIOCBInfo { void (*cancel_async)(BlockAIOCB *acb); - AioContext *(*get_aio_context)(BlockAIOCB *acb); size_t aiocb_size; } AIOCBInfo; diff --git a/include/block/block-global-state.h b/include/block/block-global-state.h index f31660c..6061220 100644 --- a/include/block/block-global-state.h +++ b/include/block/block-global-state.h @@ -185,6 +185,8 @@ void bdrv_drain_all_begin_nopoll(void); void bdrv_drain_all_end(void); void bdrv_drain_all(void); +void bdrv_aio_cancel(BlockAIOCB *acb); + int bdrv_has_zero_init_1(BlockDriverState *bs); int bdrv_has_zero_init(BlockDriverState *bs); BlockDriverState *bdrv_find_node(const char *node_name); diff --git a/include/block/block-io.h b/include/block/block-io.h index 6db48f2..f1c796a 100644 --- a/include/block/block-io.h +++ b/include/block/block-io.h @@ -101,7 +101,6 @@ bdrv_co_delete_file_noerr(BlockDriverState *bs); /* async block I/O */ -void bdrv_aio_cancel(BlockAIOCB *acb); void bdrv_aio_cancel_async(BlockAIOCB *acb); /* sg packet commands */ diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c index 2463964..36211ac 100644 --- a/softmmu/dma-helpers.c +++ b/softmmu/dma-helpers.c @@ -206,17 +206,9 @@ static void dma_aio_cancel(BlockAIOCB *acb) } } -static AioContext *dma_get_aio_context(BlockAIOCB *acb) -{ - DMAAIOCB *dbs = container_of(acb, DMAAIOCB, common); - - return dbs->ctx; -} - static const AIOCBInfo dma_aiocb_info = { .aiocb_size = sizeof(DMAAIOCB), .cancel_async = dma_aio_cancel, - .get_aio_context = dma_get_aio_context, }; BlockAIOCB *dma_blk_io(AioContext *ctx, diff --git a/util/thread-pool.c b/util/thread-pool.c index e3d8292..22f9ba3 100644 --- a/util/thread-pool.c +++ b/util/thread-pool.c @@ -228,17 +228,9 @@ static void thread_pool_cancel(BlockAIOCB *acb) } -static AioContext *thread_pool_get_aio_context(BlockAIOCB *acb) -{ - ThreadPoolElement *elem = (ThreadPoolElement *)acb; - ThreadPool *pool = elem->pool; - return pool->ctx; -} - static const AIOCBInfo thread_pool_aiocb_info = { .aiocb_size = sizeof(ThreadPoolElement), .cancel_async = thread_pool_cancel, - .get_aio_context = thread_pool_get_aio_context, }; BlockAIOCB *thread_pool_submit_aio(ThreadPoolFunc *func, void *arg, -- cgit v1.1 From c8bf923d5eeed0b2bbe26feb37bb399ec1a894f5 Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Tue, 12 Sep 2023 19:10:34 -0400 Subject: test-bdrv-drain: avoid race with BH in IOThread drain test This patch fixes a race condition in test-bdrv-drain that is difficult to reproduce. test-bdrv-drain sometimes fails without an error message on the block pull request sent by Kevin Wolf on Sep 4, 2023. I was able to reproduce it locally and found that "block-backend: process I/O in the current AioContext" (in this patch series) is the first commit where it reproduces. I do not know why "block-backend: process I/O in the current AioContext" exposes this bug. It might be related to the fact that the test's preadv request runs in the main thread instead of IOThread a after my commit. That might simply change the timing of the test. Now on to the race condition in test-bdrv-drain. The main thread schedules a BH in IOThread a and then drains the BDS: aio_bh_schedule_oneshot(ctx_a, test_iothread_main_thread_bh, &data); /* The request is running on the IOThread a. Draining its block device * will make sure that it has completed as far as the BDS is concerned, * but the drain in this thread can continue immediately after * bdrv_dec_in_flight() and aio_ret might be assigned only slightly * later. */ do_drain_begin(drain_type, bs); If the BH completes before do_drain_begin() then there is nothing to worry about. If the BH invokes bdrv_flush() before do_drain_begin(), then do_drain_begin() waits for it to complete. The problematic case is when do_drain_begin() runs before the BH enters bdrv_flush(). Then do_drain_begin() misses the BH and the drain mechanism has failed in quiescing I/O. Fix this by incrementing the in_flight counter so that do_drain_begin() waits for test_iothread_main_thread_bh(). Signed-off-by: Stefan Hajnoczi Message-ID: <20230912231037.826804-3-stefanha@redhat.com> Reviewed-by: Eric Blake Reviewed-by: Kevin Wolf Signed-off-by: Kevin Wolf --- tests/unit/test-bdrv-drain.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tests/unit/test-bdrv-drain.c b/tests/unit/test-bdrv-drain.c index b040a73..0b603e7 100644 --- a/tests/unit/test-bdrv-drain.c +++ b/tests/unit/test-bdrv-drain.c @@ -512,6 +512,7 @@ static void test_iothread_main_thread_bh(void *opaque) * executed during drain, otherwise this would deadlock. */ aio_context_acquire(bdrv_get_aio_context(data->bs)); bdrv_flush(data->bs); + bdrv_dec_in_flight(data->bs); /* incremented by test_iothread_common() */ aio_context_release(bdrv_get_aio_context(data->bs)); } @@ -583,6 +584,13 @@ static void test_iothread_common(enum drain_type drain_type, int drain_thread) aio_context_acquire(ctx_a); } + /* + * Increment in_flight so that do_drain_begin() waits for + * test_iothread_main_thread_bh(). This prevents the race between + * test_iothread_main_thread_bh() in IOThread a and do_drain_begin() in + * this thread. test_iothread_main_thread_bh() decrements in_flight. + */ + bdrv_inc_in_flight(bs); aio_bh_schedule_oneshot(ctx_a, test_iothread_main_thread_bh, &data); /* The request is running on the IOThread a. Draining its block device -- cgit v1.1 From 46eb6e861b0a622541593ea6db85e7c971dadb28 Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Tue, 12 Sep 2023 19:10:35 -0400 Subject: block-backend: process I/O in the current AioContext Switch blk_aio_*() APIs over to multi-queue by using qemu_get_current_aio_context() instead of blk_get_aio_context(). This change will allow devices to process I/O in multiple IOThreads in the future. I audited existing blk_aio_*() callers: - migration/block.c: blk_mig_lock() protects the data accessed by the completion callback. - The remaining emulated devices and exports run with qemu_get_aio_context() == blk_get_aio_context(). Signed-off-by: Stefan Hajnoczi Message-ID: <20230912231037.826804-4-stefanha@redhat.com> Reviewed-by: Kevin Wolf Reviewed-by: Eric Blake Signed-off-by: Kevin Wolf --- block/block-backend.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/block/block-backend.c b/block/block-backend.c index 24b9449..6f0a608 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -1547,7 +1547,7 @@ BlockAIOCB *blk_abort_aio_request(BlockBackend *blk, acb->blk = blk; acb->ret = ret; - replay_bh_schedule_oneshot_event(blk_get_aio_context(blk), + replay_bh_schedule_oneshot_event(qemu_get_current_aio_context(), error_callback_bh, acb); return &acb->common; } @@ -1601,11 +1601,11 @@ static BlockAIOCB *blk_aio_prwv(BlockBackend *blk, int64_t offset, acb->has_returned = false; co = qemu_coroutine_create(co_entry, acb); - aio_co_enter(blk_get_aio_context(blk), co); + aio_co_enter(qemu_get_current_aio_context(), co); acb->has_returned = true; if (acb->rwco.ret != NOT_DONE) { - replay_bh_schedule_oneshot_event(blk_get_aio_context(blk), + replay_bh_schedule_oneshot_event(qemu_get_current_aio_context(), blk_aio_complete_bh, acb); } -- cgit v1.1 From 0f86afde66ea0d9a383878223ac07bd111c69692 Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Tue, 12 Sep 2023 19:10:36 -0400 Subject: block-backend: process zoned requests in the current AioContext Process zoned requests in the current thread's AioContext instead of in the BlockBackend's AioContext. There is no need to use the BlockBackend's AioContext thanks to CoMutex bs->wps->colock, which protects zone metadata. Signed-off-by: Stefan Hajnoczi Message-ID: <20230912231037.826804-5-stefanha@redhat.com> Reviewed-by: Kevin Wolf Reviewed-by: Eric Blake Signed-off-by: Kevin Wolf --- block/block-backend.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/block/block-backend.c b/block/block-backend.c index 6f0a608..9dbdbe5 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -1907,11 +1907,11 @@ BlockAIOCB *blk_aio_zone_report(BlockBackend *blk, int64_t offset, acb->has_returned = false; co = qemu_coroutine_create(blk_aio_zone_report_entry, acb); - aio_co_enter(blk_get_aio_context(blk), co); + aio_co_enter(qemu_get_current_aio_context(), co); acb->has_returned = true; if (acb->rwco.ret != NOT_DONE) { - replay_bh_schedule_oneshot_event(blk_get_aio_context(blk), + replay_bh_schedule_oneshot_event(qemu_get_current_aio_context(), blk_aio_complete_bh, acb); } @@ -1948,11 +1948,11 @@ BlockAIOCB *blk_aio_zone_mgmt(BlockBackend *blk, BlockZoneOp op, acb->has_returned = false; co = qemu_coroutine_create(blk_aio_zone_mgmt_entry, acb); - aio_co_enter(blk_get_aio_context(blk), co); + aio_co_enter(qemu_get_current_aio_context(), co); acb->has_returned = true; if (acb->rwco.ret != NOT_DONE) { - replay_bh_schedule_oneshot_event(blk_get_aio_context(blk), + replay_bh_schedule_oneshot_event(qemu_get_current_aio_context(), blk_aio_complete_bh, acb); } @@ -1988,10 +1988,10 @@ BlockAIOCB *blk_aio_zone_append(BlockBackend *blk, int64_t *offset, acb->has_returned = false; co = qemu_coroutine_create(blk_aio_zone_append_entry, acb); - aio_co_enter(blk_get_aio_context(blk), co); + aio_co_enter(qemu_get_current_aio_context(), co); acb->has_returned = true; if (acb->rwco.ret != NOT_DONE) { - replay_bh_schedule_oneshot_event(blk_get_aio_context(blk), + replay_bh_schedule_oneshot_event(qemu_get_current_aio_context(), blk_aio_complete_bh, acb); } -- cgit v1.1 From c428b392590df6364a025d5841e3e8a589ebfd4a Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Fri, 8 Sep 2023 09:54:58 +0200 Subject: block: mark aio_poll as non-coroutine It is forbidden to block on the event loop during a coroutine, as that can cause deadlocks due to recursive locking. Signed-off-by: Paolo Bonzini Message-ID: <20230908075458.527013-1-pbonzini@redhat.com> Reviewed-by: Michael Tokarev Reviewed-by: Kevin Wolf Signed-off-by: Kevin Wolf --- include/block/aio.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/block/aio.h b/include/block/aio.h index bcc165c..f08b358 100644 --- a/include/block/aio.h +++ b/include/block/aio.h @@ -467,7 +467,7 @@ void aio_dispatch(AioContext *ctx); * or more AIO events have completed, to ensure something has moved * before returning. */ -bool aio_poll(AioContext *ctx, bool blocking); +bool no_coroutine_fn aio_poll(AioContext *ctx, bool blocking); /* Register a file descriptor and associated callbacks. Behaves very similarly * to qemu_set_fd_handler. Unlike qemu_set_fd_handler, these callbacks will -- cgit v1.1