Bug 1262236

Summary: glusterd: disable ping timer b/w glusterd and make epoll thread count default 1
Product: [Red Hat Storage] Red Hat Gluster Storage Reporter: Gaurav Kumar Garg <ggarg>
Component: glusterdAssignee: Gaurav Kumar Garg <ggarg>
Status: CLOSED ERRATA QA Contact: SATHEESARAN <sasundar>
Severity: high Docs Contact:
Priority: high    
Version: rhgs-3.1CC: nlevinki, rcyriac, sasundar, smohan, vagarwal, vbellur
Target Milestone: ---Keywords: ZStream
Target Release: RHGS 3.1.1   
Hardware: x86_64   
OS: Linux   
Whiteboard: glusterd
Fixed In Version: glusterfs-3.7.1-15 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 1271749 1271750 (view as bug list) Environment:
Last Closed: 2015-10-05 07:26:02 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:    
Bug Blocks: 1251815, 1271749, 1271750, 1288059, 1288060    

Description Gaurav Kumar Garg 2015-09-11 08:55:32 UTC 
Description of problem:

Currently glusterd is crashing when enable/disable heal and i/o is in progress on the fuse mount.

refer bug 
https://bugzilla.redhat.com/show_bug.cgi?id=1259992
https://bugzilla.redhat.com/show_bug.cgi?id=1260930  

for more details.


It seems to happen because of multi epoll thread between glusterd enable.

workaround is to make epoll thread to 1 and set ping-timeout to 0
Comment 3 SATHEESARAN 2015-09-15 15:31:44 UTC 
Tested with glusterfs-3.7.1-15.el6rhs and glusterfs-3.7.1-15.el7rhgs

ping-timeout was set 0 and there is a new key named 'event-threads' available in glusterd vol file which is set to 1

Performed the basic glusterd sanity test cases as well.
All works well.
Marking this bug as VERIFIED
Comment 5 errata-xmlrpc 2015-10-05 07:26:02 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-2015-1845.html