[Bugs] [Bug 1499158] client-io-threads option not working for replicated volumes

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1499158



--- Comment #2 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: https://review.gluster.org/18452 committed in release-3.12 by jiffin
tony Thottan (jthottan at redhat.com) 
------
commit 47604fad4c2a3951077e41e0c007ceb979bb2c24
Author: Ravishankar N <ravishankar at redhat.com>
Date:   Mon Oct 9 17:46:16 2017 +0530

    glusterd: fix client io-threads option for replicate volumes

    Backport of https://review.gluster.org/#/c/18430/

    Problem:
    Commit ff075a3d6f9b142911d25c27fd209838782bfff0 disabled loading
    client-io-threads for replicate volumes (it was set to on by default in
    commit e068c1997314046658dd502e9118dab32decf879) due to performance
    issues but in doing so, inadvertently failed to load the xlator even if
    the user explicitly enabled the option using the volume set command.
    This was despite returning returning sucess for the volume set.

    Fix:
    Modify the check in perfxl_option_handler() and add checks in volume
    create/add-brick/remove-brick code paths, tying it all to
    GD_OP_VERSION_3_12_2.

    Change-Id: Ib612973a999a7da818cc926f5c2601b1f0794fcf
    BUG: 1499158
    Signed-off-by: Ravishankar N <ravishankar at redhat.com>

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