[Bugs] [Bug 1228952] Disperse volume : glusterfs crashed

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1228952



--- Comment #4 from Anand Avati <aavati at redhat.com> ---
COMMIT: http://review.gluster.org/11111 committed in master by Vijay Bellur
(vbellur at redhat.com) 
------
commit 31866a490edf5b92886accac67eddf78b291d710
Author: Pranith Kumar K <pkarampu at redhat.com>
Date:   Sun Jun 7 10:24:08 2015 +0530

    cluster/ec: Prevent double unwind

    Problem:
    1) ec_access/ec_readlink_/ec_readdir[p] _cbks are trying to recover only
from
    ENOTCONN.
    2) When the fop succeeds it unwinds right away. But when its
    ec_fop_manager resumes, if the number of bricks that are up is less than
    ec->fragments, the the state machine will resume with -EC_STATE_REPORT
which
    unwinds again. This will lead to crashes.

    Fix:
    - If fop fails retry on other subvols, as ESTALE/ENOENT/EBADFD etc are also
    recoverable.
    - unwind success/failure in _cbks

    Change-Id: I2cac3c2f9669a4e6160f1ff4abc39f0299303222
    BUG: 1228952
    Signed-off-by: Pranith Kumar K <pkarampu at redhat.com>
    Reviewed-on: http://review.gluster.org/11111
    Reviewed-by: Xavier Hernandez <xhernandez at datalab.es>
    Tested-by: Gluster Build System <jenkins at build.gluster.com>

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