[Ocfs2-users] Random Crash - Diagnosing

[Matthew E. Porter]

Sunil:
   We have seen some similar errors in bugzilla.  Specifically, what  
we are seeing is:

Sep 10 09:15:34 sulu kernel: BUG: soft lockup detected on  CPU#2!
Sep 10 09:15:34 sulu kernel:  [<c0447f3f>] softlockup_tick +0x98/0xa6
Sep 10 09:15:34 sulu kernel:  [<c042d138>]  update_process_times 
+0x39/0x5c
Sep 10 09:15:34 sulu kernel:  [<c04176f0>]  smp_apic_timer_interrupt 
+0x5c/0x64
Sep 10 09:15:34 sulu kernel:  [<c04049bf>]  apic_timer_interrupt+0x1f/ 
0x24
Sep 10 09:15:34 sulu kernel:  [<c041c774>] kmap_atomic +0xb5/0xbb
Sep 10 09:15:34 sulu kernel:  [<c046cd92>]  cont_prepare_write 
+0xd4/0x21d
Sep 10 09:15:34 sulu kernel:  [<f8cb12cf>]  ocfs2_prepare_write 
+0x150/0x19d [ocfs2]
Sep 10 09:15:34 sulu kernel:  [<f8cb06da>] ocfs2_get_block +0x0/0xaa5  
[ocfs2]
Sep 10 09:15:34 sulu kernel:  [<c044ecae>]   
generic_file_buffered_write+0x23f/0x5f1
Sep 10 09:15:34 sulu kernel:  [<f8856ac0>]  do_get_write_access+0x43a/ 
0x467 [jbd]
Sep 10 09:15:34 sulu kernel:  [<c0427f65>] current_fs_time +0x4a/0x55
Sep 10 09:15:34 sulu kernel:  [<c044f506>]   
__generic_file_aio_write_nolock+0x4a6/0x52a
Sep 10 09:15:34 sulu kernel:  [<f8cbebb2>]  ocfs2_extend_file+0xf0d/ 
0xf95 [ocfs2]
Sep 10 09:15:34 sulu kernel:  [<c044f831>]   
generic_file_aio_write_nolock+0x39/0x83
Sep 10 09:15:34 sulu kernel:  [<c044fbb4>]  generic_file_write_nolock 
+0x86/0x9a
Sep 10 09:15:34 sulu kernel:  [<f8ccd226>]   
ocfs2_write_lock_maybe_extend+0xd39/0xe03 [ocfs2]
Sep 10 09:15:34 sulu kernel:  [<c04352dd>]  autoremove_wake_function 
+0x0/0x2d
Sep 10 09:15:34 sulu kernel:  [<f8cbf190>] ocfs2_file_write  
+0x189/0x22c [ocfs2]
Sep 10 09:15:34 sulu kernel:  [<f8cbf007>] ocfs2_file_write  
+0x0/0x22c [ocfs2]
Sep 10 09:15:34 sulu kernel:  [<c0469af3>] vfs_write +0xa1/0x143
Sep 10 09:15:34 sulu kernel:  [<c046a0e5>] sys_write+0x3c/ 0x63
Sep 10 09:15:34 sulu kernel:  [<c0403eff>] syscall_call +0x7/0xb

   This happens on all nodes.  The CPU# and timestamp change, but the  
problem persists.  The systems do not restart or panic.  The system  
merely puts every process accessing the OCFS volume in a D state.

   Would you still like me to log another bugzilla issue?  I am happy  
to do such if you wish.


Cheers,
   Matthew


---
Matthew E. Porter
Contegix
Beyond Managed Hosting(r) for Your Enterprise



On Sep 7, 2007, at 12:49 PM, Sunil Mushran wrote:

> A bugzilla with the oops stack trace will help.
>
> Matthew E. Porter wrote:
>> Greetings, I am looking for a good way to diagnose random crashes  
>> that are occurring with one of our OCFS clusters.  It is a simple  
>> 2 node cluster.  debugfs does not seem to indicate any issues.
>>
>> (Also, I would be happy to find a consultant/freelancer to work  
>> through this.)
>>
>>
>> Cheers,
>>   Matthew
>>
>> ---
>> Matthew E. Porter
>> Contegix
>> Beyond Managed Hosting(r) for Your Enterprise
>>
>>
>>
>>
>> _______________________________________________
>> Ocfs2-users mailing list
>> Ocfs2-users at oss.oracle.com
>> http://oss.oracle.com/mailman/listinfo/ocfs2-users
>