Bug 1283478

Summary:	While file is self healing append to the file hangs
Product:	[Community] GlusterFS	Reporter:	Ravishankar N <ravishankar>
Component:	replicate	Assignee:	Ravishankar N <ravishankar>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	3.7.6	CC:	bugs, ravishankar, rmekala, spandura
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	glusterfs-3.7.7	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	1283032	Environment:
Last Closed:	2016-02-19 04:44:16 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:	1282747, 1283032
Bug Blocks:

Description Ravishankar N 2015-11-19 05:22:49 UTC

+++ This bug was initially created as a clone of Bug #1283032 +++

+++ This bug was initially created as a clone of Bug #1282747 +++

Description of problem:
============
While file is self healing append to the file hangs 


Version-Release number of selected component (if applicable):
=========
glusterfs-server-3.7.5-6


How reproducible:


Steps to Reproduce:
=============
1. Create 1x2 volume and mount it on client using fuse 
2. Bring down one of the brick and create a big file 2 GB
3. Bring back the down brick and while self heal is going on try to append it to the file but it hangs untill self heal completes 

Actual results:


Expected results:
===========
Append to the file should complete without hangs

Comment 1 Vijay Bellur 2015-11-19 05:30:12 UTC

REVIEW: http://review.gluster.org/12653 (afr: Drop compatibility lock for data self-heal) posted (#1) for review on release-3.7 by Ravishankar N (ravishankar)

Comment 2 Vijay Bellur 2015-11-20 03:50:05 UTC

REVIEW: http://review.gluster.org/12653 (afr: Drop compatibility lock for data self-heal) posted (#2) for review on release-3.7 by Ravishankar N (ravishankar)

Comment 3 Vijay Bellur 2015-11-23 07:01:45 UTC

REVIEW: http://review.gluster.org/12653 (afr: Drop compatibility lock for data self-heal) posted (#3) for review on release-3.7 by Ravishankar N (ravishankar)

Comment 4 Vijay Bellur 2015-11-23 18:59:40 UTC

COMMIT: http://review.gluster.org/12653 committed in release-3.7 by Vijay Bellur (vbellur) 
------
commit f46a54326871bed28c64cd5312b250c7c8207e4f
Author: Ravishankar N <ravishankar>
Date:   Wed Nov 18 08:30:48 2015 +0530

    afr: Drop compatibility lock for data self-heal
    
    Backport of http://review.gluster.org/#/c/12602/
    
    In glusterfs 3.4 and older, AFR did not take locks in self-heal domain
    during data self-heal. So this compat lock in data domain was added to prevent
    older clients from trying to heal a file while an existing self-heal was going
    on by a newer client. But the side effect was that all appending writes (which
    take full locks in data domain) from mounts would be stalled until self-heal
    was complete.
    
    Since glusterfs 3.4 is not supported anymore, remove the compat lock.
    
    Change-Id: I20bb2edf7527ce5d8291d13eb8b9149e66e9bcac
    BUG: 1283478
    Signed-off-by: Ravishankar N <ravishankar>
    Reviewed-on: http://review.gluster.org/12653
    Tested-by: Gluster Build System <jenkins.com>
    Tested-by: NetBSD Build System <jenkins.org>
    Reviewed-by: Vijay Bellur <vbellur>

Comment 5 Ravishankar N 2016-02-19 04:44:16 UTC

v3.7.7 contains a fix.

Comment 6 Kaushal 2016-04-19 07:48:31 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-3.7.7, please open a new bug report.

glusterfs-3.7.7 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] https://www.gluster.org/pipermail/gluster-users/2016-February/025292.html
[2] http://thread.gmane.org/gmane.comp.file-systems.gluster.user