diff options
| -rw-r--r-- | block.c | 12 | ||||
| -rw-r--r-- | block/block-backend.c | 25 | ||||
| -rw-r--r-- | include/block/block_int.h | 7 |
3 files changed, 40 insertions, 4 deletions
@@ -4019,7 +4019,7 @@ void bdrv_invalidate_cache_all(Error **errp) static int bdrv_inactivate_recurse(BlockDriverState *bs, bool setting_flag) { - BdrvChild *child; + BdrvChild *child, *parent; int ret; if (!setting_flag && bs->drv->bdrv_inactivate) { @@ -4038,6 +4038,16 @@ static int bdrv_inactivate_recurse(BlockDriverState *bs, if (setting_flag) { bs->open_flags |= BDRV_O_INACTIVE; + + QLIST_FOREACH(parent, &bs->parents, next_parent) { + if (parent->role->inactivate) { + ret = parent->role->inactivate(parent); + if (ret < 0) { + bs->open_flags &= ~BDRV_O_INACTIVE; + return ret; + } + } + } } return 0; } diff --git a/block/block-backend.c b/block/block-backend.c index a7ce72b..f3a6008 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -156,6 +156,30 @@ static void blk_root_activate(BdrvChild *child, Error **errp) } } +static int blk_root_inactivate(BdrvChild *child) +{ + BlockBackend *blk = child->opaque; + + if (blk->disable_perm) { + return 0; + } + + /* Only inactivate BlockBackends for guest devices (which are inactive at + * this point because the VM is stopped) and unattached monitor-owned + * BlockBackends. If there is still any other user like a block job, then + * we simply can't inactivate the image. */ + if (!blk->dev && !blk->name[0]) { + return -EPERM; + } + + blk->disable_perm = true; + if (blk->root) { + bdrv_child_try_set_perm(blk->root, 0, BLK_PERM_ALL, &error_abort); + } + + return 0; +} + static const BdrvChildRole child_root = { .inherit_options = blk_root_inherit_options, @@ -168,6 +192,7 @@ static const BdrvChildRole child_root = { .drained_end = blk_root_drained_end, .activate = blk_root_activate, + .inactivate = blk_root_inactivate, }; /* diff --git a/include/block/block_int.h b/include/block/block_int.h index 5637925..5750a44 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -473,10 +473,11 @@ struct BdrvChildRole { void (*drained_begin)(BdrvChild *child); void (*drained_end)(BdrvChild *child); - /* Notifies the parent that the child has been activated (e.g. when - * migration is completing) and it can start requesting permissions and - * doing I/O on it. */ + /* Notifies the parent that the child has been activated/inactivated (e.g. + * 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 (*attach)(BdrvChild *child); void (*detach)(BdrvChild *child); |