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 centsthanx,
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 - 6.5Kernel - 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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