Bug 1376464

Summary:	[RFE] enable sharding with virt profile - /var/lib/glusterd/groups/virt
Product:	Red Hat Gluster Storage	Reporter:	SATHEESARAN <sasundar>
Component:	sharding	Assignee:	Krutika Dhananjay <kdhananj>
Status:	CLOSED ERRATA	QA Contact:	SATHEESARAN <sasundar>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	rhgs-3.1	CC:	amukherj, asrivast, bugs, kdhananj, pkarampu, rcyriac, rhs-bugs, sasundar, storage-qa-internal
Target Milestone:	---	Keywords:	FutureFeature, Triaged
Target Release:	RHGS 3.2.0
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	glusterfs-3.8.4-7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1375431	Environment:
Last Closed:	2017-03-23 05:47:17 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:	1375431, 1402215, 1402216
Bug Blocks:	1351503, 1375849

Description SATHEESARAN 2016-09-15 13:34:15 UTC

+++ This bug was initially created as a clone of Bug #1375431 +++

Description of problem:
-----------------------
Sharding seems to be most vital for the virt store usecase and this needs to be turned when the volume is optimized for virt-store

The following options needs to be added to the virt profile - /var/lib/glusterd/groups/virt

features.shard=on
cluster.data-self-heal-algorithm=full

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

How reproducible:
-----------------
Not applicable as this is a RFE

Steps to Reproduce:
-------------------
Not applicable as this is a RFE

Actual results:
---------------
sharding is not enabled by default by optimizing the volume for virt store

Expected results:
-----------------
Sharding should be enabled by default on optimizing the gluster volume for virt store usecase

--- Additional comment from SATHEESARAN on 2016-09-14 09:08:42 EDT ---

strict-o-direct also needs to be turned on and remote-dio to be turned off

In total there are 4 options :

features.shard=on
cluster.data-self-heal-algorithm=full
performance.strict-o-direct=on
network.remote-dio=disable

Comment 1 Atin Mukherjee 2016-09-15 15:15:12 UTC

I am moving this BZ to sharding component (although the changes could be in glusterd) as the sharding as a feature should be deciding this factor.

Comment 10 Atin Mukherjee 2016-12-01 14:55:42 UTC

upstream patch http://review.gluster.org/#/c/15995/ posted for review.

Comment 11 Pranith Kumar K 2016-12-05 04:51:10 UTC

https://code.engineering.redhat.com/gerrit/92064

Vijay is mentioning that we may have to add different profile for scale which needs discussion with Sahina/sas/Krutika. For now taking this in and a separate bug should be logged based on these discussions to get the other options in.

Comment 13 SATHEESARAN 2016-12-12 02:48:41 UTC

Based on comment11, this bug adds only sharding related options to virt profile, so updating the bug's summary accordingly

Comment 14 SATHEESARAN 2016-12-12 02:50:01 UTC

Tested with glusterfs-3.8.4-7.el7rhgs and I see that the /var/lib/glusterd/groups/virt file is updated with sharding

[root@ ~]# rpm -qf /var/lib/glusterd/groups/virt 
glusterfs-server-3.8.4-7.el7rhgs.x86_64

[root@ ~]# cat /var/lib/glusterd/groups/virt 
performance.quick-read=off
performance.read-ahead=off
performance.io-cache=off
performance.stat-prefetch=off
cluster.eager-lock=enable
network.remote-dio=enable
cluster.quorum-type=auto
cluster.server-quorum-type=server
features.shard=on
cluster.data-self-heal-algorithm=full

Marking this bug as VERIFIED

Comment 16 errata-xmlrpc 2017-03-23 05:47:17 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHSA-2017-0486.html