[Gluster-users] GlusterFS Lockup

Pranith Kumar Karampuri pkarampu at redhat.com
Wed Aug 6 12:29:48 UTC 2014

Could you take a statedump of the mount process when the hang happens 
using steps at 

On 08/05/2014 02:10 AM, Mark Harrigan wrote:
> 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?
> Thanks,
> Mark
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