diff options
| author | Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> | 2021-01-17 00:46:49 +0300 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2021-01-26 14:36:37 +0100 |
| commit | a6d23d56df06027acb1202e64316b00d0c05aa75 (patch) | |
| tree | 9549e574be5b1565d2e969065769c0009719c7ad /include | |
| parent | 7e032df0ea7a4a2272c9b14b97d3f620397dba6f (diff) | |
block/block-copy: add block_copy_cancel
Add function to cancel running async block-copy call. It will be used
in backup.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210116214705.822267-8-vsementsov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/block/block-copy.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/block/block-copy.h b/include/block/block-copy.h index b5a53ad59e..7821850f88 100644 --- a/include/block/block-copy.h +++ b/include/block/block-copy.h @@ -74,11 +74,24 @@ void block_copy_call_free(BlockCopyCallState *call_state); bool block_copy_call_finished(BlockCopyCallState *call_state); bool block_copy_call_succeeded(BlockCopyCallState *call_state); bool block_copy_call_failed(BlockCopyCallState *call_state); +bool block_copy_call_cancelled(BlockCopyCallState *call_state); int block_copy_call_status(BlockCopyCallState *call_state, bool *error_is_read); void block_copy_set_speed(BlockCopyState *s, uint64_t speed); void block_copy_kick(BlockCopyCallState *call_state); +/* + * Cancel running block-copy call. + * + * Cancel leaves block-copy state valid: dirty bits are correct and you may use + * cancel + <run block_copy with same parameters> to emulate pause/resume. + * + * Note also, that the cancel is async: it only marks block-copy call to be + * cancelled. So, the call may be cancelled (block_copy_call_cancelled() reports + * true) but not yet finished (block_copy_call_finished() reports false). + */ +void block_copy_call_cancel(BlockCopyCallState *call_state); + BdrvDirtyBitmap *block_copy_dirty_bitmap(BlockCopyState *s); void block_copy_set_skip_unallocated(BlockCopyState *s, bool skip); |