[Bugs] [Bug 1154635] glusterd: Gluster rebalance status returns failure

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1154635



--- Comment #10 from Anand Avati <aavati at redhat.com> ---
COMMIT: http://review.gluster.org/9012 committed in master by Kaushal M
(kaushal at redhat.com) 
------
commit 97ccd45fb66a63c0b2436a0245dfb9490e2941b7
Author: Atin Mukherjee <amukherj at redhat.com>
Date:   Mon Oct 27 12:12:03 2014 +0530

    glusterd : release cluster wide locks in op-sm during failures

    glusterd op-sm infrastructure has some loophole in handing error cases in
    locking/unlocking phases which ends up having stale locks restricting
    further transactions to go through.

    This patch still doesn't handle all possible unlocking error cases as the
    framework neither has retry mechanism nor the lock timeout. For eg - if
    unlocking fails in one of the peer, cluster wide lock is not released and
    further transaction can not be made until and unless originator node/the
node
    where unlocking failed is restarted.

    Following test cases were executed (with the help of gdb) after applying
this
    patch:

    * RPC timesout in lock cbk
    * Decoding of RPC response in lock cbk fails
    * RPC response is received from unknown peer in lock cbk
    * Setting peerinfo in dictionary fails while sending lock request for first
peer
      in the list
    * Setting peerinfo in dictionary fails while sending lock request for other
      peers
    * Lock RPC could not be sent for peers

    For all above test cases the success criteria is not to have any stale
locks

    Change-Id: Ia1550341c31005c7850ee1b2697161c9ca04b01a
    BUG: 1154635
    Signed-off-by: Atin Mukherjee <amukherj at redhat.com>
    Reviewed-on: http://review.gluster.org/9012
    Reviewed-by: Krishnan Parthasarathi <kparthas at redhat.com>
    Tested-by: Gluster Build System <jenkins at build.gluster.com>
    Reviewed-by: Kaushal M <kaushal at redhat.com>

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