[Bugs] [Bug 1476653] New: cassandra fails on gluster-block with both replicate and ec volumes

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1476653

            Bug ID: 1476653
           Summary: cassandra fails on gluster-block with both replicate
                    and ec volumes
           Product: GlusterFS
           Version: 3.12
         Component: core
          Assignee: bugs at gluster.org
          Reporter: pkarampu at redhat.com
                CC: bugs at gluster.org
        Depends On: 1474190



+++ This bug was initially created as a clone of Bug #1474190 +++

Description of problem:
gluster-block file is opened with O_DIRECT but because block-profile has
filter_O_DIRECT enabled, it is leading to high latency for fsync which leads to
failures in cassandra. Disabling remote-dio fixed this issue. We need to change
remote-dio to disabled in gluster-block.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

--- Additional comment from Worker Ant on 2017-07-24 02:25:45 EDT ---

REVIEW: https://review.gluster.org/17856 (extras: Disable remote-dio in
gluster-block profile) posted (#1) for review on master by Pranith Kumar
Karampuri (pkarampu at redhat.com)

--- Additional comment from Worker Ant on 2017-07-24 10:17:14 EDT ---

COMMIT: https://review.gluster.org/17856 committed in master by Pranith Kumar
Karampuri (pkarampu at redhat.com) 
------
commit 0b3fec6924cad5c9f38941550ab4106972efa5cc
Author: Pranith Kumar K <pkarampu at redhat.com>
Date:   Mon Jul 24 11:31:56 2017 +0530

    extras: Disable remote-dio in gluster-block profile

    gluster-block file is opened with O_DIRECT but because block-profile has
    remote-dio enabled, it is leading to high latency for fsync which leads to
    failures in cassandra. Disabling remote-dio fixed this issue. We need to
change
    remote-dio to disabled in gluster-block.

    BUG: 1474190
    Change-Id: Ifd845ea9cbdcc08dd6073faca6082682af376ca3
    Signed-off-by: Pranith Kumar K <pkarampu at redhat.com>
    Reviewed-on: https://review.gluster.org/17856
    CentOS-regression: Gluster Build System <jenkins at build.gluster.org>
    Reviewed-by: Krutika Dhananjay <kdhananj at redhat.com>
    Smoke: Gluster Build System <jenkins at build.gluster.org>
    Reviewed-by: Jeff Darcy <jeff at pl.atyp.us>
    Reviewed-by: Niels de Vos <ndevos at redhat.com>


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1474190
[Bug 1474190] cassandra fails on gluster-block with both replicate and ec
volumes
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