[Gluster-users] Impact on GlusterD with multi threaded e-poll support - Workaround for GlusterD crash

[Atin Mukherjee]

On 10/12/2015 07:09 PM, Ivan Rossi wrote:
> Atin,
>    Does the fix apply to the following bug report too?
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=1270207
At the look of it, I would say yes. But we would need to analyze it in
detail to double confirm.
> 
> 2015-10-11 8:08 GMT+02:00 Atin Mukherjee <amukherj at redhat.com>:
>> Folks,
>>
>> We've been noticing few GlusterD crashes in 3,7.x releases due to
>> enabling of multi threaded e-poll support in GlusterD.
>>
>> As a work around you could add an entry "option event-threads 1" in
>> /etc/glusterfs/glusterd.vol and restart GlusterD service. We plan to
>> have this configuration change in 3.7.6 and we will revert this once we
>> get to the RCA of these crashes.
>>
>> Note : Setting 'event-threads' to 1 for glusterd's epoll subsystem
>> doesn't work well with ping-timer being enabled especially for
>> volume-snapshot commands. In this case if you happen to see volume
>> snapshot commands failing, you would need to update the ping-timeout
>> value to 0.
>>
>> Thanks,
>> Atin
>> _______________________________________________
>> Gluster-users mailing list
>> Gluster-users at gluster.org
>> http://www.gluster.org/mailman/listinfo/gluster-users
>