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authorPranith Kumar K <pranithk@gluster.com>2012-07-30 21:01:21 +0530
committerVijay Bellur <vbellur@redhat.com>2012-08-17 01:14:38 -0700
commit1df75bc835a75f17fa0fcd3722ef68f05f5f3200 (patch)
treeae228e509ee89d1621aeddb9dc8192ef01cfbfc1 /xlators/cluster/dht
parent30a9ebd91339f36d092f46bbba116fa4047fb8c5 (diff)
cluster/afr: Handle child_up & fd not opened case in xaction
RCA: When an fd is opened while a brick is down, after the brick comes back up afr issues open on the other brick. It can fail for a number of reasons (enoent etc). While the system is in that state, inode/entrylks pre-op happen only on the brick that is up and fd is opened for fd-fops. post-op should consider only the bricks where both pre-op and fop succeeded as success, rest of them as failures. Code now marks only the children that are down as failures as opposed to child_down & fd-not-opened. This makes change-log appear as success on the subvolume where we did not do any fop leading to no change-log but differences in data/metadata for reg-files. Fix: Mark non-participants of fop as failure. This is tracked in transaction.pre_op[]. Tests: Simulated the scenario using err-gen on top of one of the client xlator which fails all fops always. Performed fops and the changelog represented pending fops on the brick with err-gen loaded. Tested the case of brick down and perform entry/metadata/data operations to confirm they still work as expected. Change-Id: I41905936126b19abba56ca581c0301a894507e1a BUG: 844987 Signed-off-by: Pranith Kumar K <pranithk@gluster.com> Reviewed-on: http://review.gluster.com/3776 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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