From: Benoît Canet <ben...@irqsave.net>
Makes a vote to select error if any.
Signed-off-by: Benoit Canet <ben...@irqsave.net>
Reviewed-by: Max Reitz <mre...@redhat.com>
---
block/quorum.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/block/quorum.c b/block/quorum.c
index 38bc217..840afda 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -629,12 +629,40 @@ static void quorum_invalidate_cache(BlockDriverState *bs)
}
}
+static coroutine_fn int quorum_co_flush(BlockDriverState *bs)
+{
+ BDRVQuorumState *s = bs->opaque;
+ QuorumVoteVersion *winner = NULL;
+ QuorumVotes error_votes;
+ QuorumVoteValue result_value;
+ int i;
+ int result = 0;
+
+ QLIST_INIT(&error_votes.vote_list);
+ error_votes.compare = quorum_64bits_compare;
+
+ for (i = 0; i < s->num_children; i++) {
+ result = bdrv_co_flush(s->bs[i]);
+ result_value.l = result;
+ quorum_count_vote(&error_votes, &result_value, i);
+ }
+
+ winner = quorum_get_vote_winner(&error_votes);
+ result = winner->value.l;
+
+ quorum_free_vote_list(&error_votes);
+
+ return result;
+}
+
static BlockDriver bdrv_quorum = {
.format_name = "quorum",
.protocol_name = "quorum",
.instance_size = sizeof(BDRVQuorumState),
+ .bdrv_co_flush_to_disk = quorum_co_flush,
+
.bdrv_getlength = quorum_getlength,
.bdrv_aio_readv = quorum_aio_readv,
--
1.8.3.2
