diff options
| -rw-r--r-- | block/dirty-bitmap.c | 9 | ||||
| -rw-r--r-- | block/qcow2-bitmap.c | 7 | ||||
| -rw-r--r-- | block/qcow2.c | 2 | ||||
| -rw-r--r-- | block/qcow2.h | 1 | ||||
| -rw-r--r-- | include/block/block_int.h | 1 | ||||
| -rw-r--r-- | include/block/dirty-bitmap.h | 1 |
6 files changed, 21 insertions, 0 deletions
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c index 063793e316..f9bfc77985 100644 --- a/block/dirty-bitmap.c +++ b/block/dirty-bitmap.c @@ -478,6 +478,15 @@ int bdrv_remove_persistent_dirty_bitmap(BlockDriverState *bs, const char *name, } } +bool +bdrv_supports_persistent_dirty_bitmap(BlockDriverState *bs) +{ + if (bs->drv && bs->drv->bdrv_supports_persistent_dirty_bitmap) { + return bs->drv->bdrv_supports_persistent_dirty_bitmap(bs); + } + return false; +} + static bool coroutine_fn bdrv_co_can_store_new_dirty_bitmap(BlockDriverState *bs, const char *name, uint32_t granularity, Error **errp) diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c index cb06954b4a..1cf6d2ab77 100644 --- a/block/qcow2-bitmap.c +++ b/block/qcow2-bitmap.c @@ -1748,3 +1748,10 @@ fail: name, bdrv_get_device_or_node_name(bs)); return false; } + +bool qcow2_supports_persistent_dirty_bitmap(BlockDriverState *bs) +{ + BDRVQcow2State *s = bs->opaque; + + return s->qcow_version >= 3; +} diff --git a/block/qcow2.c b/block/qcow2.c index fe0ce39799..dfab8d2f6c 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -5791,6 +5791,8 @@ BlockDriver bdrv_qcow2 = { .bdrv_detach_aio_context = qcow2_detach_aio_context, .bdrv_attach_aio_context = qcow2_attach_aio_context, + .bdrv_supports_persistent_dirty_bitmap = + qcow2_supports_persistent_dirty_bitmap, .bdrv_co_can_store_new_dirty_bitmap = qcow2_co_can_store_new_dirty_bitmap, .bdrv_co_remove_persistent_dirty_bitmap = qcow2_co_remove_persistent_dirty_bitmap, diff --git a/block/qcow2.h b/block/qcow2.h index 6a8b82e6cc..402e8acb1c 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -782,6 +782,7 @@ bool qcow2_co_can_store_new_dirty_bitmap(BlockDriverState *bs, int qcow2_co_remove_persistent_dirty_bitmap(BlockDriverState *bs, const char *name, Error **errp); +bool qcow2_supports_persistent_dirty_bitmap(BlockDriverState *bs); ssize_t coroutine_fn qcow2_co_compress(BlockDriverState *bs, void *dest, size_t dest_size, diff --git a/include/block/block_int.h b/include/block/block_int.h index 5e4f4c348c..33a12916f4 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -568,6 +568,7 @@ struct BlockDriver { uint64_t parent_perm, uint64_t parent_shared, uint64_t *nperm, uint64_t *nshared); + bool (*bdrv_supports_persistent_dirty_bitmap)(BlockDriverState *bs); bool (*bdrv_co_can_store_new_dirty_bitmap)(BlockDriverState *bs, const char *name, uint32_t granularity, diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h index 8a10029418..5a8d52e4de 100644 --- a/include/block/dirty-bitmap.h +++ b/include/block/dirty-bitmap.h @@ -16,6 +16,7 @@ typedef enum BitmapCheckFlags { #define BDRV_BITMAP_MAX_NAME_SIZE 1023 +bool bdrv_supports_persistent_dirty_bitmap(BlockDriverState *bs); BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs, uint32_t granularity, const char *name, |