[Ocfs2-users] Kernel panic due to ocfs2

[Srinivas Eeda]

This is due to a race in lock mastery/purge. I have recently fixed this 
problem but haven't yet submitted the patch to mainline. Please file a 
Service request with Oracle to get a one-off fix.

On 02/25/2013 10:07 PM, Ramappa, Ravi (NSN - IN/Bangalore) wrote:
> Hi,
> In a 13 node cluster, the first four nodes went into kernel panic 
> state. The /var/log/messages contained messages as below,
> Feb 25 22:02:46 prod152 kernel: 
> (o2net,9470,5):dlm_assert_master_handler:1817 ERROR: DIE! Mastery 
> assert from 4, but current owner is 2! (O000000000000000c36706200000000)
> Feb 25 22:02:46 prod152 kernel: lockres: 
> O000000000000000c36706200000000, owner=2, state=0
> Feb 25 22:02:46 prod152 kernel:   last used: 0, refcnt: 3, on purge 
> list: no
> Feb 25 22:02:46 prod152 kernel:   on dirty list: no, on reco list: no, 
> migrating pending: no
> Feb 25 22:02:46 prod152 kernel:   inflight locks: 0, asts reserved: 0
> Feb 25 22:02:46 prod152 kernel:   refmap nodes: [ ], inflight=0
> Feb 25 22:02:46 prod152 kernel:   granted queue:
> Feb 25 22:02:46 prod152 kernel:     type=3, conv=-1, node=2, 
> cookie=2:222205, ref=2, ast=(empty=y,pend=n), bast=(empty=y,pend=n), 
> pending=(conv=n,lock=n,cancel=n,unlock=n)
> Feb 25 22:02:46 prod152 kernel:   converting queue:
> Feb 25 22:02:46 prod152 kernel:   blocked queue:
> Feb 25 22:02:46 prod152 kernel: ----------- [cut here ] --------- 
> [please bite here ] ---------
> Feb 25 22:02:46 prod152 kernel: Kernel BUG at 
> .../build/BUILD/ocfs2-1.4.10/fs/ocfs2/dlm/dlmmaster.c:1819
> Feb 25 22:02:46 prod152 kernel: invalid opcode: 0000 [1] SMP
> Feb 25 22:02:46 prod152 kernel: last sysfs file: 
> /block/cciss!c0d0/cciss!c0d0p1/stat
> Feb 25 22:02:46 prod152 kernel: CPU 5
> Feb 26 09:50:27 prod152 syslogd 1.4.1: restart.
> The OCFS2 rpm versions used are as below,
> [root at prod152 ~]# uname -r
> 2.6.18-308.1.1.el5
> [root at prod152 ~]# rpm -qa| grep ocfs
> ocfs2-2.6.18-308.1.1.el5xen-1.4.10-1.el5
> ocfs2-tools-devel-1.6.3-2.el5
> ocfs2-2.6.18-308.1.1.el5-1.4.10-1.el5
> ocfs2-tools-debuginfo-1.6.3-2.el5
> ocfs2-tools-1.6.3-2.el5
> ocfs2console-1.6.3-2.el5
> ocfs2-2.6.18-308.1.1.el5debug-1.4.10-1.el5
> root at prod152 ~]# cat /etc/ocfs2/cluster.conf
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.150
>         number = 0
>         name = prod150
>         cluster = ocfs2
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.151
>         number = 1
>         name = prod151
>         cluster = ocfs2
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.152
>         number = 2
>         name = prod152
>         cluster = ocfs2
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.153
>         number = 3
>         name = prod153
>         cluster = ocfs2
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.106
>         number = 4
>         name = prod106
>         cluster = ocfs2
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.107
>         number = 5
>         name = prod107
>         cluster = ocfs2
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.155
>         number = 6
>         name = prod155
>         cluster = ocfs2
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.156
>         number = 7
>         name = prod156
>         cluster = ocfs2
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.157
>         number = 8
>         name = prod157
>         cluster = ocfs2
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.158
>         number = 9
>         name = prod158
>         cluster = ocfs2
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.51
>         number = 10
>         name = prod51
>         cluster = ocfs2
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.52
>         number = 11
>         name = prod52
>         cluster = ocfs2
> node:
>         ip_port = 7777
>         ip_address = 10.10.10.154
>         number = 12
>         name = prod154
>         cluster = ocfs2
> cluster:
>         node_count =13
>         name = ocfs2
> [root at prod152 ~]#
> Is this a known issue ? Any issues in the configuration ?
> Thanks,
> Ravi
>
>
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