Bug 849606

Summary:	provide option to disable io-threads least-priority
Product:	[Red Hat Storage] Red Hat Gluster Storage	Reporter:	Pranith Kumar K <pkarampu>
Component:	glusterd	Assignee:	Pranith Kumar K <pkarampu>
Status:	CLOSED ERRATA	QA Contact:	Ben Turner <bturner>
Severity:	unspecified	Docs Contact:
Priority:	medium
Version:	2.0	CC:	bturner, gluster-bugs, rfortier, sdharane, vbellur
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	glusterfs-3.4.0qa8	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	843704
Clones:	851030 (view as bug list)		Environment:
Last Closed:	2013-09-23 22:38:57 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:	843704
Bug Blocks:	851030

Description Pranith Kumar K 2012-08-20 10:34:23 UTC

+++ This bug was initially created as a clone of Bug #843704 +++

Description of problem:
In some kind of load, fops with least priority(self-heal fops) are facing starvation in io-threads. Provide an option to disable least-priority altogether.

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 vbellur on 2012-07-30 14:16:07 EDT ---

CHANGE: http://review.gluster.com/3743 (performance/io-threads: Provide option to turn off least-priority) merged in master by Anand Avati (avati)

Comment 2 Ben Turner 2013-08-12 20:01:17 UTC

Verified on glusterfs-3.4.0.18rhs-1.el6rhs.x86_64:

[root@storage-qe08 ~]# gluster volume set testvol enable-least-priority on
volume set: success
[root@storage-qe08 ~]# gluster volume set testvol enable-least-priority off
volume set: success

Option: performance.enable-least-priority
Default Value: on
Description: Enable/Disable least priority

Comment 3 Scott Haines 2013-09-23 22:38:57 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/RHBA-2013-1262.html

Comment 4 Scott Haines 2013-09-23 22:41:32 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/RHBA-2013-1262.html