diff options
| -rw-r--r-- | block/snapshot.c | 26 | ||||
| -rw-r--r-- | include/block/snapshot.h | 4 | ||||
| -rw-r--r-- | migration/savevm.c | 17 |
3 files changed, 34 insertions, 13 deletions
diff --git a/block/snapshot.c b/block/snapshot.c index eae4730..75d0b96 100644 --- a/block/snapshot.c +++ b/block/snapshot.c @@ -443,3 +443,29 @@ int bdrv_all_find_snapshot(const char *name, BlockDriverState **first_bad_bs) *first_bad_bs = bs; return err; } + +int bdrv_all_create_snapshot(QEMUSnapshotInfo *sn, + BlockDriverState *vm_state_bs, + uint64_t vm_state_size, + BlockDriverState **first_bad_bs) +{ + int err = 0; + BlockDriverState *bs = NULL; + + while (err == 0 && (bs = bdrv_next(bs))) { + AioContext *ctx = bdrv_get_aio_context(bs); + + aio_context_acquire(ctx); + if (bs == vm_state_bs) { + sn->vm_state_size = vm_state_size; + err = bdrv_snapshot_create(bs, sn); + } else if (bdrv_can_snapshot(bs)) { + sn->vm_state_size = 0; + err = bdrv_snapshot_create(bs, sn); + } + aio_context_release(ctx); + } + + *first_bad_bs = bs; + return err; +} diff --git a/include/block/snapshot.h b/include/block/snapshot.h index 10ee582..55e995a 100644 --- a/include/block/snapshot.h +++ b/include/block/snapshot.h @@ -86,5 +86,9 @@ int bdrv_all_delete_snapshot(const char *name, BlockDriverState **first_bsd_bs, Error **err); int bdrv_all_goto_snapshot(const char *name, BlockDriverState **first_bsd_bs); int bdrv_all_find_snapshot(const char *name, BlockDriverState **first_bad_bs); +int bdrv_all_create_snapshot(QEMUSnapshotInfo *sn, + BlockDriverState *vm_state_bs, + uint64_t vm_state_size, + BlockDriverState **first_bad_bs); #endif diff --git a/migration/savevm.c b/migration/savevm.c index 63c07e1..80107e3 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -1996,19 +1996,10 @@ void hmp_savevm(Monitor *mon, const QDict *qdict) goto the_end; } - /* create the snapshots */ - - bs1 = NULL; - while ((bs1 = bdrv_next(bs1))) { - if (bdrv_can_snapshot(bs1)) { - /* Write VM state size only to the image that contains the state */ - sn->vm_state_size = (bs == bs1 ? vm_state_size : 0); - ret = bdrv_snapshot_create(bs1, sn); - if (ret < 0) { - monitor_printf(mon, "Error while creating snapshot on '%s'\n", - bdrv_get_device_name(bs1)); - } - } + ret = bdrv_all_create_snapshot(sn, bs, vm_state_size, &bs); + if (ret < 0) { + monitor_printf(mon, "Error while creating snapshot on '%s'\n", + bdrv_get_device_name(bs)); } the_end: |