[Lustre-discuss] can't umount an OST

[D. Marc Stearman]

On May 4, 2008, at 2:37 AM, Alex Lyashkov wrote:

>> May  2 12:53:59 samba02 kernel: LustreError: 18105:0:(client.c: 
>> 504:ptlrpc_import_delay_req()) @@@ Uninitialized import.   
>> req at ffff8101e6c7c200
>> May  2 12:53:59 samba02 kernel: LustreError: 18105:0:(client.c: 
>> 506:ptlrpc_import_delay_req()) LBUG
>> May  2 12:53:59 samba02 kernel: Lustre: 18105:0:(linux-debug.c: 
>> 168:libcfs_debug_dumpstack()) showing stack for process 18105
>> May  2 12:53:59 samba02 kernel: lfs           R  running  
>> task       0 18105  12088                     (NOTLB)
>> May  2 12:53:59 samba02 kernel: 0000000000000000 ffffffff8840741c  
>> 0000000000000004 ffff8101d7642ac0
>> May  2 12:53:59 samba02 kernel:        ffff8101efe779a0  
>> ffffffff8016079c ffff8101e6c7c200 ffff8101e6c7c200
>> May  2 12:53:59 samba02 kernel:        ffff8101d3a609b8  
>> ffffffff883fb72b
>> May  2 12:53:59 samba02 kernel: Call Trace: <ffffffff8840741c> 
>> {:ptlrpc:lustre_pack_request+1052}
>> May  2 12:53:59 samba02 kernel:        <ffffffff8016079c> 
>> {filemap_nopage+387} <ffffffff883fb72b>{:ptlrpc:ptlrpc_queue_wait 
>> +571}
>> May  2 12:53:59 samba02 kernel:        <ffffffff883f92c4> 
>> {:ptlrpc:ptlrpc_prep_req_pool+1796}
>> May  2 12:53:59 samba02 kernel:        <ffffffff88426d4c> 
>> {:ptlrpc:lprocfs_wr_ping+428} <ffffffff802d968d>{__down_read+18}
>> May  2 12:53:59 samba02 kernel:        <ffffffff8836f29b> 
>> {:obdclass:lprocfs_fops_write+91}
>> May  2 12:53:59 samba02 kernel:        <ffffffff80181803>{vfs_write 
>> +215} <ffffffff80181dca>{sys_write+69}
>> May  2 12:53:59 samba02 kernel:        <ffffffff8010ad3e> 
>> {system_call+126}
>> May  2 12:53:59 samba02 kernel: LustreError: dumping log to /tmp/ 
>> lustre-log.1209754439.18105
>>
> can you please open new bug report and
> submit /tmp/lustre-log.1209754439.18105 to bug?

This looks like https://bugzilla.lustre.org/show_bug.cgi?id=15505  
comment 5 number 2.  As Alex says, the lustre logs will be essential  
in fixing this.

-Marc

----
D. Marc Stearman
LC Lustre Administration Lead
marc at llnl.gov
925.423.9670
Pager: 1.888.203.0641