[Gluster-devel] AFR: machine crash hangs other mounts or transport endpoint not connected

[Amar S. Tumballi]

I am trying to review what may cause it, let me get back as soon as I have a
fix.

Regards,
Amar

On Fri, Apr 25, 2008 at 6:31 PM, Christopher Hawkins <
chawkins at veracitynetworks.com> wrote:

> I am having the same issue. I'm working on a diskless
> node cluster and figured the issue was related to that
> since AFR seems to fail over nicely for everyone else...
> But it seems I am not alone, so what can I do to help troubleshoot?
>
> I have two servers exporting a brick each, and a client mounting
> them both with AFR and no unify. Transport timeout settings
> don't seem to make a difference - client is just hung if I power off
> or just stop glusterfsd. There is nothing logged on the server side.
> I'll use a usb thumb drive for client side logging since any logs in
> the ramdisk obviously disappear after the reboot which fixes the hang...
> If I get any insight from this I'll report it asap.
>
> Thanks,
> Chris
>
> > Real simple, two bricks on ext3 with user_xattr.
> > It is storage for mailstore.  The issue that I've been
> > battling is that when one of the machines crash, the other
> > machine loses the mailstore with either the transport
> > endpoint disconnect or the glusterfs filesystem is hung.  You
> > cannot do anything with it. 'ls' it, 'df' it, ... nothing.
> > If I try to kill glusterfs/d it just gives me /glusterfsmount
> > busy.  The only recovery at this point is to reboot the good
> > machine as well as the failed machine.  So needing to do that
> > is sort of defeating my purpose of creating this array.  Is
> > there no way that glusterfs can recover from the crash such
> > that things are still good on the other bricks and mounts on
> > other machines?
> >
> > Thanks,
> > Gerry
>
>
>
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-- 
Amar Tumballi
Gluster/GlusterFS Hacker
[bulde on #gluster/irc.gnu.org]
http://www.zresearch.com - Commoditizing Super Storage!