Signed-off-by: Benoit Canet <ben...@irqsave.net>
---
block/quorum.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/block/quorum.c b/block/quorum.c
index 9550216..587796d 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -632,6 +632,37 @@ static void quorum_invalidate_cache(BlockDriverState *bs)
}
}
+static int coroutine_fn quorum_co_is_allocated(BlockDriverState *bs,
+ int64_t sector_num,
+ int nb_sectors,
+ int *pnum)
+{
+ BDRVQuorumState *s = bs->opaque;
+ QuorumVoteVersion *winner = NULL;
+ QuorumVotes result_votes, num_votes;
+ int i, result, num;
+
+ QLIST_INIT(&result_votes.vote_list);
+ QLIST_INIT(&num_votes.vote_list);
+
+ for (i = 0; i < s->total; i++) {
+ result = bdrv_co_is_allocated(s->bs[i], sector_num, nb_sectors, &num);
+ quorum_count_vote(&result_votes, result, i);
+ quorum_count_vote(&num_votes, num, i);
+ }
+
+ winner = quorum_get_vote_winner(&result_votes);
+ result = winner->value;
+
+ winner = quorum_get_vote_winner(&num_votes);
+ *pnum = winner->value;
+
+ quorum_free_vote_list(&result_votes);
+ quorum_free_vote_list(&num_votes);
+
+ return result;
+}
+
static BlockDriver bdrv_quorum = {
.format_name = "quorum",
.protocol_name = "quorum",
@@ -647,6 +678,7 @@ static BlockDriver bdrv_quorum = {
.bdrv_aio_readv = quorum_aio_readv,
.bdrv_aio_writev = quorum_aio_writev,
.bdrv_invalidate_cache = quorum_invalidate_cache,
+ .bdrv_co_is_allocated = quorum_co_is_allocated,
};
static void bdrv_quorum_init(void)
--
1.7.10.4
