Bug 1096614

Summary:	readdir-ahead needs to be enabled by default for new volumes on rhs-3.0
Product:	[Red Hat Storage] Red Hat Gluster Storage	Reporter:	Kaushal <kaushal>
Component:	glusterd	Assignee:	Kaushal <kaushal>
Status:	CLOSED ERRATA	QA Contact:	Ben Turner <bturner>
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	rhgs-3.0	CC:	amukherj, asrivast, kparthas, nlevinki, nsathyan, sasundar, ssaha, ssamanta, vbellur
Target Milestone:	---
Target Release:	RHGS 3.0.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	glusterfs-3.6.0.16-1.el6	Doc Type:	Enhancement
Doc Text:	The readdir-ahead translator will be enabled by default on newly created volumes in RHS-3.0. This will improve readdir performance for the new volumes. NOTE: readdir-ahead is not compatible with RHS-2.1, so new volumes created with RHS-3.0 cannot be used with RHS-2.1 clients until readdir-ahead is disabled.	Story Points:	---
Clone Of:
Clones:	1216187 (view as bug list)		Environment:
Last Closed:	2014-09-22 19:37:15 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:
Embargoed:
Bug Depends On:	1096616
Bug Blocks:	1216187, 1217135

Description Kaushal 2014-05-12 07:11:45 UTC

Readdir ahead should be enabled by default on newly created rhs-3.0 volumes when cluster op-version supports it. For already existing volumes, readdir-ahead will still need to be enabled manually.

Comment 2 Kaushal 2014-05-13 05:26:30 UTC

The framework needed for this change has been posted for review upstream at http://review.gluster.org/7734

Comment 3 Nagaprasad Sathyanarayana 2014-05-19 10:56:19 UTC

Setting flags required to add BZs to RHS 3.0 Errata

Comment 5 Ben Turner 2014-06-12 19:24:13 UTC

Verified on glusterfs-3.6.0.16-1.el6:

**Servers are running**
Kernel: kernel-2.6.32-431.17.1.el6.x86_64
Gluster: glusterfs-3.6.0.16-1.el6rhs.x86_64
Server tuning - tuned-adm profile rhs-high-throughput

current mean improvement over baseline is  2.93 percent

Comment 7 errata-xmlrpc 2014-09-22 19:37:15 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.

http://rhn.redhat.com/errata/RHEA-2014-1278.html