[Lustre-discuss] Lustre mount problem [update]

[Frank Mietke]

Hi,

an update for the problem described below. The command "lfs check servers" which
accesses the /proc filesystem entry of OST0010 seems to be the cause of the
trace. If I try to make a "cat /proc/.../chicfs-OST0010.../ost_conn_uuid" this
process is hanging. On the MDS it is possible to perform this command without
problems.

Frank


On Wed, Apr 30, 2008 at 11:03:11AM +0200, Frank Mietke wrote:
> Hi,
> 
> we're using 1.6.4.2 here. 5 days ago we lost an OST block device forever. I
> deactivated this OST, recreated the block device and started "mkfs.lustre --reformat ..." on this
> device and gave it the same OST id (OST0010)  as before. A mount of this OST went wrong
> with the "already in use" message. Therefore I reformatted the device again with
> no index number passed. But now, when I try to mount the clients I've got the
> following in dmesg:
> 
> Lustre: 1837:0:(obd_mount.c:1685:lustre_check_exclusion()) Excluding
> chicfs-OST0010-osc (on exclusion list)
> Lustre: setting import chicfs-OST0010_UUID INACTIVE by administrator request
> Lustre: chicfs-OST0010-osc-00000100cfa0f800.osc: set parameter active=0
> LustreError: 1837:0:(lov_obd.c:140:lov_connect_obd()) not connecting OSC
> chicfs-OST0010_UUID; administratively disabled
> Lustre: Client chicfs-client has started
> ib0: no IPv6 routers present
> LustreError: 2596:0:(client.c:504:ptlrpc_import_delay_req()) @@@ Uninitialized
> import.  req at 00000100cfb91600 x274/t0 o400->chicfs-OST0010_UUID@<NULL>:6 lens
> 64/64 ref 1 fl Rpc:N/0/0 rc 0/0
> LustreError: 2596:0:(client.c:506:ptlrpc_import_delay_req()) LBUG
> Lustre: 2596:0:(linux-debug.c:168:libcfs_debug_dumpstack()) showing stack for
> process 2596
> lfs           R  running task       0  2596   2594                     (NOTLB)
> 00000100715f9ca8 0000000000000000 0000000000000000 00000100718d6740 
>        00000100715f9e78 00000100715f9ca8 00000100715f9cb8 000001007e32c800 
>        ffffffffa031e990 00000000000001fa 
> Call Trace:<ffffffff80148b4b>{__kernel_text_address+26}
> <ffffffff801115c0>{show_trace+375} 
>        <ffffffff801116fc>{show_stack+241}
> <ffffffffa01e39c3>{:libcfs:lbug_with_loc+115} 
>        <ffffffffa02ebc4e>{:ptlrpc:ptlrpc_import_delay_req+238} 
>        <ffffffffa02f05e8>{:ptlrpc:ptlrpc_queue_wait+584}
> <ffffffffa02f9bb3>{:ptlrpc:lustre_pack_request+995} 
>        <ffffffffa02eb9f8>{:ptlrpc:ptlrpc_prep_req_pool+1832} 
>        <ffffffff80178f93>{file_move+27} <ffffffff80177540>{dentry_open_it+284} 
>        <ffffffffa031ceac>{:ptlrpc:lprocfs_wr_ping+444}
> <ffffffff803211ef>{__down_read+52} 
>        <ffffffffa0266a15>{:obdclass:lprocfs_fops_write+117} 
>        <ffffffff8017821a>{vfs_write+207} <ffffffff80178302>{sys_write+69} 
>        <ffffffff8011022a>{system_call+126} 
> 
> Any hints are appreciated. Is there a way to fully remove the OST0010 from the
> configuration?
> 
> Thanks,
> Frank
> 
> 
> 
> -- 
> Dipl.-Inf. Frank Mietke     |     Fakultätsrechen- und Informationszentrum
> Tel.: 0371 - 531 - 35538    |     Fak. für Informatik
> Fax:  0371 - 531 8 35538    |     TU-Chemnitz
> Key-ID: 60F59599            |     frank.mietke at informatik.tu-chemnitz.de
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> 

-- 
Dipl.-Inf. Frank Mietke     |     Fakultätsrechen- und Informationszentrum
Tel.: 0371 - 531 - 35538    |     Fak. für Informatik
Fax:  0371 - 531 8 35538    |     TU-Chemnitz
Key-ID: 60F59599            |     frank.mietke at informatik.tu-chemnitz.de