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[Qemu-devel] [PATCH V19 09/12] quorum: Add quorum_co_flush().
From: |
Benoît Canet |
Subject: |
[Qemu-devel] [PATCH V19 09/12] quorum: Add quorum_co_flush(). |
Date: |
Fri, 21 Feb 2014 22:21:18 +0100 |
From: Benoît Canet <address@hidden>
Makes a vote to select error if any.
Signed-off-by: Benoit Canet <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
---
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
- [Qemu-devel] [PATCH V19 00/12] Quorum block filter, Benoît Canet, 2014/02/21
- [Qemu-devel] [PATCH V19 02/12] quorum: Create BDRVQuorumState and BlkDriver and do init., Benoît Canet, 2014/02/21
- [Qemu-devel] [PATCH V19 09/12] quorum: Add quorum_co_flush().,
Benoît Canet <=
- [Qemu-devel] [PATCH V19 12/12] quorum: Add unit test., Benoît Canet, 2014/02/21
- [Qemu-devel] [PATCH V19 11/12] quorum: Add quorum_open() and quorum_close()., Benoît Canet, 2014/02/21
- [Qemu-devel] [PATCH V19 10/12] quorum: Implement recursive .bdrv_recurse_is_first_non_filter in quorum., Benoît Canet, 2014/02/21
- [Qemu-devel] [PATCH V19 08/12] quorum: Add quorum_invalidate_cache()., Benoît Canet, 2014/02/21
- [Qemu-devel] [PATCH V19 04/12] blkverify: Extract qemu_iovec_clone() and qemu_iovec_compare() from blkverify., Benoît Canet, 2014/02/21
- [Qemu-devel] [PATCH V19 01/12] quorum: Create quorum.c, add QuorumChildRequest and QuorumAIOCB., Benoît Canet, 2014/02/21
- [Qemu-devel] [PATCH V19 03/12] quorum: Add quorum_aio_writev and its dependencies., Benoît Canet, 2014/02/21
- [Qemu-devel] [PATCH V19 07/12] quorum: Add quorum_getlength()., Benoît Canet, 2014/02/21
- [Qemu-devel] [PATCH V19 06/12] quorum: Add quorum mechanism., Benoît Canet, 2014/02/21