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| author | Wen Congyang <wency@cn.fujitsu.com> | 2015-07-03 14:45:06 +0800 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2015-09-04 21:00:32 +0200 |
| commit | 834cb2ada5db197a11c99142d50222945d196fc0 (patch) | |
| tree | cb92ccf3ac78e8fbc4599aedca2f5aa1b07d2576 /block | |
| parent | 909c260c71d1bee7018e17034580ffd0743508db (diff) | |
| download | qemu-834cb2ada5db197a11c99142d50222945d196fc0.tar.gz qemu-834cb2ada5db197a11c99142d50222945d196fc0.tar.bz2 qemu-834cb2ada5db197a11c99142d50222945d196fc0.zip | |
quorum: validate vote threshold against num_children even if read-pattern is fifo
We need to use threshold to check if too many write operation fails.
If threshold is larger than num children, we always get write error
event even if all write operations success.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Message-id: 55962F72.3060003@cn.fujitsu.com
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/quorum.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/block/quorum.c b/block/quorum.c index 2f6c45f760..8fe53b4272 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -889,6 +889,12 @@ static int quorum_open(BlockDriverState *bs, QDict *options, int flags, } s->threshold = qemu_opt_get_number(opts, QUORUM_OPT_VOTE_THRESHOLD, 0); + /* and validate it against s->num_children */ + ret = quorum_valid_threshold(s->threshold, s->num_children, &local_err); + if (ret < 0) { + goto exit; + } + ret = parse_read_pattern(qemu_opt_get(opts, QUORUM_OPT_READ_PATTERN)); if (ret < 0) { error_setg(&local_err, "Please set read-pattern as fifo or quorum"); @@ -897,12 +903,6 @@ static int quorum_open(BlockDriverState *bs, QDict *options, int flags, s->read_pattern = ret; if (s->read_pattern == QUORUM_READ_PATTERN_QUORUM) { - /* and validate it against s->num_children */ - ret = quorum_valid_threshold(s->threshold, s->num_children, &local_err); - if (ret < 0) { - goto exit; - } - /* is the driver in blkverify mode */ if (qemu_opt_get_bool(opts, QUORUM_OPT_BLKVERIFY, false) && s->num_children == 2 && s->threshold == 2) { |