Bug 1474190

Summary:	cassandra fails on gluster-block with both replicate and ec volumes
Product:	[Community] GlusterFS	Reporter:	Pranith Kumar K <pkarampu>
Component:	core	Assignee:	bugs <bugs>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	mainline	CC:	bugs
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Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:	glusterfs-3.13.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1476653 (view as bug list)		Environment:
Last Closed:	2017-12-08 17:35:17 UTC	Type:	Bug
Regression:	---	Mount Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1476653

Description Pranith Kumar K 2017-07-24 06:00:56 UTC

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.

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Comment 1 Worker Ant 2017-07-24 06:25:45 UTC

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)

Comment 2 Worker Ant 2017-07-24 14:17:14 UTC

COMMIT: https://review.gluster.org/17856 committed in master by Pranith Kumar Karampuri (pkarampu) 
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commit 0b3fec6924cad5c9f38941550ab4106972efa5cc
Author: Pranith Kumar K <pkarampu>
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>
    Reviewed-on: https://review.gluster.org/17856
    CentOS-regression: Gluster Build System <jenkins.org>
    Reviewed-by: Krutika Dhananjay <kdhananj>
    Smoke: Gluster Build System <jenkins.org>
    Reviewed-by: Jeff Darcy <jeff.us>
    Reviewed-by: Niels de Vos <ndevos>

Comment 3 Shyamsundar 2017-12-08 17:35:17 UTC

This bug is getting closed because a release has been made available that should address the reported issue. In case the problem is still not fixed with glusterfs-3.13.0, please open a new bug report.

glusterfs-3.13.0 has been announced on the Gluster mailinglists [1], packages for several distributions should become available in the near future. Keep an eye on the Gluster Users mailinglist [2] and the update infrastructure for your distribution.

[1] http://lists.gluster.org/pipermail/announce/2017-December/000087.html
[2] https://www.gluster.org/pipermail/gluster-users/