[Ocfs2-users] Kernel panic due to ocfs2

Mon Feb 25 22:59:15 PST 2013

Hi,

Thanks a lot .
Raised SR 3-6857095451 : Kernel panic due to ocfs, with severity 1.

Regards,

Ravi

From: ext Srinivas Eeda [mailto:srinivas.eeda at oracle.com]
Sent: Tuesday, February 26, 2013 12:01 PM
To: Ramappa, Ravi (NSN - IN/Bangalore)
Cc: ocfs2-users at oss.oracle.com
Subject: Re: [Ocfs2-users] Kernel panic due to ocfs2

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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