- allow drive-mirror to create sprase mirror on images like qcow2
- allow qemu-img map to work as expected on quorum driver
Cc: Benoit Canet <ben...@irqsave.net>
Cc: Kevin Wolf <kw...@redhat.com>
Cc: Stefan Hajnoczi <stefa...@redhat.com>
Signed-off-by: Liu Yuan <namei.u...@gmail.com>
---
block/quorum.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/block/quorum.c b/block/quorum.c
index ebf5c71..f0d0a98 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -780,6 +780,21 @@ static coroutine_fn int quorum_co_flush(BlockDriverState
*bs)
return result;
}
+static int64_t coroutine_fn quorum_co_get_block_status(BlockDriverState *bs,
+ int64_t sector_num,
+ int nb_sectors,
+ int *pnum)
+{
+ BDRVQuorumState *s = bs->opaque;
+ BlockDriverState *child_bs = s->bs[0];
+
+ if (child_bs->drv->bdrv_co_get_block_status)
+ return child_bs->drv->bdrv_co_get_block_status(child_bs, sector_num,
+ nb_sectors, pnum);
+
+ return bdrv_get_block_status(child_bs, sector_num, nb_sectors, pnum);
+}
+
static bool quorum_recurse_is_first_non_filter(BlockDriverState *bs,
BlockDriverState *candidate)
{
@@ -1038,6 +1053,7 @@ static BlockDriver bdrv_quorum = {
.bdrv_close = quorum_close,
.bdrv_co_flush_to_disk = quorum_co_flush,
+ .bdrv_co_get_block_status = quorum_co_get_block_status,
.bdrv_getlength = quorum_getlength,
--
1.9.1
