[Lustre-discuss] Seeing OST errors on the OSS that doesnt have it mounted

[Andreas Dilger]

On Aug 28, 2008  12:41 +0900, Alex Lee wrote:
> Andreas Dilger wrote:
>>> Aug 23 12:27:52 lustre-oss-0-0 kernel: LustreError: 2918:0:(ldlm_lib.c:1536:target_send_reply_msg()) @@
>>> @ processing error (-19)  req at ffff81026f189a00 x52/t0 o8-><?>@<?>:0/0 lens 240/0 e 0 to 0 dl 1219462372
>>>  ref 1 fl Interpret:/0/0 rc -19/0
>>
>> The fact that lustre-oss-0-0 returns -ENODEV (-19) isn't a reason to stop
>> trying there, because it may take some time for OST to failover from primary
>> server to backup.
>>
>> What this really means is that your primary server is having network
>> trouble, or is so severely overloaded that the client has given up on
>> it and is trying the backup.  It could also be a problem on the client
>> I guess.
>
> Is there any documentation on how to decode the error messages? I feel  
> bad keep posting on the list for every single error message I dont  
> understand.

There is some documentation about error messages in the manual (in
particular how to decode the above RPC message).

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.