[Gluster-users] GlusterFS Lockup

Justin Clift justin at gluster.org
Wed Aug 6 12:22:50 UTC 2014

----- Original Message -----
> Hi,
> We've been using GlusterFS 3.4.0 on Debian 7 for around 11 months. Every so
> often (once every 6 weeks or so) a server running the client and nginx
> accessing the gluster storage would suffer a hard lockup of nginx and
> require a reboot. This wasn't such a big deal as there were several clients
> so there was never a loss to production.
> However in the last few days we've seen a huge increase in these lockups.
> Perhaps 2-3 times a day on multiple machines.
> The bug appears to be very similar to
> https://bugzilla.redhat.com/show_bug.cgi?id=764743 from Gluster 3.2 and the
> suggestion of first killing the Gluster process does allow a restart of
> nginx without a reboot.
> The only changes to our usage of late have been to stop a rebalance process
> (as we're at the point where we need to add extra bricks) and to breach 80%
> usage on the volume (Total volume size is 400TB).
> Has anyone else had any experience of this bug re-emerging in Gluster 3.4?

As a side thought, how practical would it be to upgrade to GlusterFS 3.4.5?

There have been a lot of bug fixes (some pretty important) between 3.4.0, and
3.4.5.  I have no idea if there's a fix for the problem you mention in there
btw, I'm just asking in general. :)

Regards and best wishes,

Justin Clift

GlusterFS - http://www.gluster.org

An open source, distributed file system scaling to several
petabytes, and handling thousands of clients.

My personal twitter: twitter.com/realjustinclift

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