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| author | Anuradha <atalur@redhat.com> | 2015-02-25 15:09:28 +0530 |
|---|---|---|
| committer | Vijay Bellur <vbellur@redhat.com> | 2015-03-19 06:33:12 -0700 |
| commit | d06692d1deec425f74747e2c463e56f7eca981c8 (patch) | |
| tree | 2bb530f08506ee80b5704b09a02fb7f1bb75dfea /xlators/cluster/afr/src/afr-read-txn.c | |
| parent | 6f71bc02df5bd177c2f5dbf4e54b2af1525ab979 (diff) | |
cluster/afr : enable inspection & resolution of files in split-brain
Part 2/2 patch to enable users analyze and resolve
split-brain.
This patch enables :
1) Users to inspect the files in data and metadata split-brain.
2) Resolve the split-brain.
Both using a series of setfattr commands.
Consider a volume "test" with 2 bricks.
1) To inspect a file f1:
setfattr -n replica.split-brain-choice -v test-client-0 f1
After the execution of this command, if no read_subvol
is found, reads will be served from test-client-0 (corresponding
to brick-0).
2) To resolve split-brain :
setfattr -n replica.split-brain-heal-finalize -v test-client-0 f1
Execution of this command will lead to the resolution
of data and metadata split-brain with subvol mentioned in the
command (test-client-0 here) as the source and the rest as sink.
Change-Id: Ia20f3ee5abd3119e3d54fcc599f1e55ac65fd179
BUG: 1191396
Signed-off-by: Anuradha <atalur@redhat.com>
Reviewed-on: http://review.gluster.org/9743
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Diffstat (limited to 'xlators/cluster/afr/src/afr-read-txn.c')
| -rw-r--r-- | xlators/cluster/afr/src/afr-read-txn.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/xlators/cluster/afr/src/afr-read-txn.c b/xlators/cluster/afr/src/afr-read-txn.c index ec67a20e624..eaa73d9be20 100644 --- a/xlators/cluster/afr/src/afr-read-txn.c +++ b/xlators/cluster/afr/src/afr-read-txn.c @@ -56,6 +56,7 @@ afr_read_txn_refresh_done (call_frame_t *frame, xlator_t *this, int err) int event_generation = 0; inode_t *inode = NULL; int ret = -1; + int spb_choice = -1; local = frame->local; inode = local->inode; @@ -96,6 +97,12 @@ afr_read_txn_refresh_done (call_frame_t *frame, xlator_t *this, int err) local->read_attempted[read_subvol] = 1; readfn: + if (read_subvol == -1) { + ret = afr_inode_split_brain_choice_get (inode, this, + &spb_choice); + if ((ret == 0) && spb_choice >= 0) + read_subvol = spb_choice; + } local->readfn (frame, this, read_subvol); return 0; |