HI,
Sorry for inconvenience , LUN (volume) in the SAN is mounted. :)
Regards,
Chamara
On Tue, Jan 20, 2015 at 1:06 PM, Deepak Shetty <dpkshetty@xxxxxxxxx> wrote:
I would leave other experts on this list to comment / suggest more.Your response is still confusing as you say its SAN and use the word 'mounted' !Anyways, given the above stack trace, i feel you should follow this up on centos-devel since it mostly looks like a kernel panic to me.
thanx,
deepakOn Tue, Jan 20, 2015 at 12:36 PM, chamara samarakoon <chthsa123@xxxxxxxxx> wrote:HI,We have created a separate volume on SAN and it is mounted on Openstack controller node, there we have created multiple bricks on mounted location as folders.Regards,Chamara--On Tue, Jan 20, 2015 at 12:20 PM, Deepak Shetty <dpkshetty@xxxxxxxxx> wrote:Just trying to understand the setup better....Do you use the mpathXX devices as bricks ? Whats the brick type (LV or dir) ?
So you create the bricks on controller node and have the gluster volume present there ?On Tue, Jan 20, 2015 at 12:11 PM, chamara samarakoon <chthsa123@xxxxxxxxx> wrote:HI Deepak,Yes, it is Openstack controller and SAN is configured for redundancy through multi-path.Regards,Chamara--On Tue, Jan 20, 2015 at 11:55 AM, Deepak Shetty <dpkshetty@xxxxxxxxx> 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
thanx,
deepakOn 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 - 6.5Kernel - 2.6.32-431.29.2.el6.x86_64GlusterFS - glusterfs 3.5.2 built on Jul 31 2014 18:47:54OpenStack - 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/42725/0xffffffffBUG: unable to handle kernel paging request at 0000000038a60d0a8IP: [<fffffffff81058e5d>] task_rq_lock+0x4d/0xa0PGD 1065525067 PUD 0Oops: 0000 [#1] SMPlast 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/stateCPU 0Modules linked in : xtconntrack iptable_filter ip_tables ipt_REDIRECT fuse ipv openvswitch vxlan iptable_manglePlease advice on above incident , also feedback on the Openstack + GlusterFS setup is appreciated.Thank You,Chamara
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