diff options
Diffstat (limited to 'include/block/block_int.h')
| -rw-r--r-- | include/block/block_int.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/block/block_int.h b/include/block/block_int.h index aa697f1f69..ceec8c2f56 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -419,9 +419,16 @@ struct BlockDriver { /* * Returns 1 if newly created images are guaranteed to contain only * zeros, 0 otherwise. + * Must return 0 if .bdrv_has_zero_init_truncate() returns 0. */ int (*bdrv_has_zero_init)(BlockDriverState *bs); + /* + * Returns 1 if new areas added by growing the image with + * PREALLOC_MODE_OFF contain only zeros, 0 otherwise. + */ + int (*bdrv_has_zero_init_truncate)(BlockDriverState *bs); + /* Remove fd handlers, timers, and other event loop callbacks so the event * loop is no longer in use. Called with no in-flight requests and in * depth-first traversal order with parents before child nodes. @@ -1115,6 +1122,7 @@ BlockJob *commit_active_start(const char *job_id, BlockDriverState *bs, * @buf_size: The amount of data that can be in flight at one time. * @mode: Whether to collapse all images in the chain to the target. * @backing_mode: How to establish the target's backing chain after completion. + * @zero_target: Whether the target should be explicitly zero-initialized * @on_source_error: The action to take upon error reading from the source. * @on_target_error: The action to take upon error writing to the target. * @unmap: Whether to unmap target where source sectors only contain zeroes. @@ -1134,6 +1142,7 @@ void mirror_start(const char *job_id, BlockDriverState *bs, int creation_flags, int64_t speed, uint32_t granularity, int64_t buf_size, MirrorSyncMode mode, BlockMirrorBackingMode backing_mode, + bool zero_target, BlockdevOnError on_source_error, BlockdevOnError on_target_error, bool unmap, const char *filter_node_name, |