[Lustre-discuss] odd kernel crash after a heartbeat failover

[John White]

Just to follow-up, after enabling netconsole to get some meaningful logging out of these OSSs, it is clear that there's a problem with the backend storage communication and that this certainly isn't a lustre issue.  Thanks folks.
----------------
John White
High Performance Computing Services (HPCS)
(510) 486-7307
One Cyclotron Rd, MS: 50B-3209C
Lawrence Berkeley National Lab
Berkeley, CA 94720








On Apr 15, 2010, at 9:45 PM, Cliff White wrote:

> John White wrote:
>> This is actually happening repeatedly, any idea if this is a lustre-side error?
>> Apr 15 14:37:57 n0008.lustre kernel: Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP:  Apr 15 14:37:57 n0008.lustre kernel: <2>LDISKFS-fs error (device dm-7) in ldiskfs_reserve_inode_write: Journal has aborted Apr 15 14:37:57 n0008.lustre kernel: Oops: 0002 [1] SMP  Apr 15 14:37:57 n0008.lustre kernel: Oops: 0002 [1] SMP  Apr 15 14:37:57 n0008.lustre kernel: last sysfs file: /block/dm-7/dev Apr 15 14:37:57 n0008.lustre kernel: RIP  [<ffffffff88abc375>] :jbd:journal_commit_transaction+0xc33/0x132e Apr 15 14:37:57 n0008.lustre kernel: CR2: 0000000000000000 Apr 15 14:37:57 n0008.lustre kernel: CR2: 0000000000000000 
> 
> Looks more like a messed-up-disk problem. I would sugest checking the health of your journal device.
> cliffw
> 
>> ----------------
>> John White
>> High Performance Computing Services (HPCS)
>> (510) 486-7307
>> One Cyclotron Rd, MS: 50B-3209C
>> Lawrence Berkeley National Lab
>> Berkeley, CA 94720
>> On Apr 15, 2010, at 1:10 PM, John White wrote:
>>> Hello Folks,
>>> 	We just had a very odd crash after a heartbeat failover that may or may not be related to each other.  I'm not specifically sure if this was an IO error on the disk (I see no actual EIO, just the journal commit crash).  Any ideas?  The FS went through recovery just fine and doesn't appear to have any corruption:
>>> [...]
>>> Apr 15 11:49:32 n0007.lustre heartbeat: [10940]: info: mach_down takeover complete. Apr 15 12:09:55 n0007.lustre kernel: Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP:  Apr 15 12:09:55 n0007.lustre kernel:  [<ffffffff88abc375>] :jbd:journal_commit_transaction+0xc33/0x132e Apr 15 12:09:55 n0007.lustre kernel: Oops: 0002 [1] SMP  Apr 15 12:09:55 n0007.lustre kernel: Oops: 0002 [1] SMP  Apr 15 12:09:55 n0007.lustre kernel: last sysfs file: /block/dm-3/dev Apr 15 12:09:55 n0007.lustre kernel: RIP  [<ffffffff88abc375>] :jbd:journal_commit_transaction+0xc33/0x132e Apr 15 12:09:55 n0007.lustre kernel: CR2: 0000000000000000 Apr 15 12:09:55 n0007.lustre kernel: CR2: 0000000000000000 Apr 15 12:13:25 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358805.4890 Apr 15 12:13:25 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358805.3719 Apr 15 12:13:25 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358805.3719 Apr 15 12:13:25 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358805.4807 Apr 15 12:13:26 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358806.3725 Apr 15 12:13:30 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358810.3714 Apr 15 12:13:30 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358810.4796 Apr 15 12:13:30 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358810.3740 Apr 15 12:13:30 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358810.4991 Apr 15 12:13:39 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358819.3727 Apr 15 12:13:39 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358819.5109 Apr 15 12:13:39 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358819.5072 Apr 15 12:13:39 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358819.4812 Apr 15 12:13:40 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358820.3720 Apr 15 12:13:41 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358821.3732 Apr 15 12:13:41 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358821.5047 Apr 15 12:13:41 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271358821.4862 Apr 15 12:24:09 n0006.lustre kernel: LustreError: dumping log to /tmp/lustre-log.1271359449.3725
>>> 
>>> 
>>> logs available upon request.
>>> ----------------
>>> John White
>>> High Performance Computing Services (HPCS)
>>> (510) 486-7307
>>> One Cyclotron Rd, MS: 50B-3209C
>>> Lawrence Berkeley National Lab
>>> Berkeley, CA 94720
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
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