Makes a vote to select error if any.
Signed-off-by: Benoit Canet <ben...@irqsave.net>
---
block/quorum.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/block/quorum.c b/block/quorum.c
index 4bea906..dba2918 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -652,6 +652,35 @@ static int coroutine_fn
quorum_co_is_allocated(BlockDriverState *bs,
return result;
}
+static coroutine_fn int quorum_co_flush(BlockDriverState *bs)
+{
+ BDRVQuorumState *s = bs->opaque;
+ QuorumVoteVersion *winner = NULL;
+ QuorumVotes error_votes;
+ int i;
+ int result = 0;
+ bool error = false;
+
+ QLIST_INIT(&error_votes.vote_list);
+
+ for (i = 0; i < s->total; i++) {
+ result = bdrv_co_flush(s->bs[i]);
+ if (result) {
+ error = true;
+ quorum_count_vote(&error_votes, result, i);
+ }
+ }
+
+ if (error) {
+ winner = quorum_get_vote_winner(&error_votes);
+ result = winner->value;
+ }
+
+ quorum_free_vote_list(&error_votes);
+
+ return result;
+}
+
static BlockDriver bdrv_quorum = {
.format_name = "quorum",
.protocol_name = "quorum",
@@ -662,6 +691,7 @@ static BlockDriver bdrv_quorum = {
.bdrv_file_open = quorum_open,
.bdrv_close = quorum_close,
+ .bdrv_co_flush_to_disk = quorum_co_flush,
.bdrv_aio_readv = quorum_aio_readv,
.bdrv_aio_writev = quorum_aio_writev,
--
1.7.10.4
