In addition, I would also like to add that i do suspect (just my hunch) that it could be related to multipath.
If you can try without multipath and if it doesn't re-create, i think that would be a good data point for kernel/OS vendor to debug further.thanx,
deepak
On Tue, Jan 20, 2015 at 2:32 PM, Niels de Vos <ndevos@xxxxxxxxxx> wrote:
On Tue, Jan 20, 2015 at 11:55:40AM +0530, Deepak Shetty wrote:
> What does "Controller" mean, the openstack controller node or somethign
> else (like HBA ) ?
> You picture says its SAN but the text says multi-path mount.. SAN would
> mean block devices, so I am assuming you have redundant block devices on
> the compute host, mkfs'ing it and then creating bricks for gluster ?
>
>
> The stack trace looks like you hit a kernel bug and glusterfsd happens to
> be running on the CPU at the time... my 2 cents
That definitely is a kernel issue. You should contact your OS support
vendor about this.
The bits you copy/pasted are not sufficient to see what caused it. The
glusterfsd process is just a casualty of the kernel issue, and it is not
likely this can be fixed in Gluster. I suspect you need a kernel
patch/update.
Niels
>
> thanx,
> deepak
>
> On Tue, Jan 20, 2015 at 11:29 AM, chamara samarakoon <chthsa123@xxxxxxxxx>
> wrote:
>
> > Hi All,
> >
> >
> > We have setup Openstack cloud as below. And the "/va/lib/nova/instances"
> > is a Gluster volume.
> >
> > CentOS - 6.5
> > Kernel - 2.6.32-431.29.2.el6.x86_64
> > GlusterFS - glusterfs 3.5.2 built on Jul 31 2014 18:47:54
> > OpenStack - RDO using Packstack
> >
> >
> >
> >
> >
> >
> >
> > Recently Controller node freezes with following error (Which required hard
> > reboot), as a result Gluster volumes on compute node can not reach the
> > controller and due to that all the instances on compute nodes become to
> > read-only status which causes to restart all instances.
> >
> >
> >
> >
> > *BUG: scheduling while atomic : glusterfsd/42725/0xffffffff*
> > *BUG: unable to handle kernel paging request at 0000000038a60d0a8*
> > *IP: [<fffffffff81058e5d>] task_rq_lock+0x4d/0xa0*
> > *PGD 1065525067 PUD 0*
> > *Oops: 0000 [#1] SMP*
> > *last sysfs file :
> > /sys/device/pci0000:80/0000:80:02.0/0000:86:00.0/host2/port-2:0/end_device-2:0/target2:0:0/2:0:0:1/state*
> > *CPU 0*
> > *Modules linked in : xtconntrack iptable_filter ip_tables ipt_REDIRECT
> > fuse ipv openvswitch vxlan iptable_mangle *
> >
> > Please advice on above incident , also feedback on the Openstack +
> > GlusterFS setup is appreciated.
> >
> > Thank You,
> > Chamara
> >
> >
> > _______________________________________________
> > Gluster-users mailing list
> > Gluster-users@xxxxxxxxxxx
> > http://www.gluster.org/mailman/listinfo/gluster-users
> >
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