[Lustre-discuss] version 1.4 mount 1.6

Aaron Knister aaron at iges.org
Mon Jan 21 20:50:57 PST 2008


Oh, ok! Thanks!

-Aaron

On Jan 21, 2008, at 6:37 PM, Andreas Dilger wrote:

> On Jan 21, 2008  12:59 -0500, Aaron Knister wrote:
>> I have a client running 1.4.11 and i want to mount a filesystem  
>> that's
>> running on 1.6.4.1 servers. On the client I can ping the servers  
>> using
>> lctl however a mount fails with an LBUG on the mds.
>>
>> The mount command on the 1.4.11 client is --
>>
>> mount -t lustre 192.168.64.70 at o2ib:/data-mdtlov/client /mnt/lustre
>>
>> The error on the server is --
>>
>> LustreError: 7369:0:(lov_obd.c:227:lov_connect()) ASSERTION(lov-
>>> lov_connects == 1) failed
>> LustreError: 7369:0:(tracefile.c:431:libcfs_assertion_failed()) LBUG
>> ll_mdt_24     R  running task       0  7369      1          7370   
>> 7368
>> (L-TLB)
>>  ffff81026e92ddd0 ffff8102ba45045c ffff810418438dc0 ffff8102823e0200
>>  0000000000000000 ffff810296765000 0000000000000000 ffff81041c2fd280
>>  ffffffff888c029f 0000000000000286 ffffffff8003cd0e ffff810418438140
>> Call Trace:
>>  [<ffffffff888c029f>] :mds:mds_handle+0xe7f/0x56ff
>>  [<ffffffff8003cd0e>] lock_timer_base+0x1b/0x3c
>>  [<ffffffff8001c1a2>] __mod_timer+0xb0/0xbe
>>  [<ffffffff885dcfb0>] :obdclass:class_conn2export+0x250/0x2d0
>>  [<ffffffff8868e277>] :ptlrpc:ptlrpc_main+0x1437/0x1df0
>>  [<ffffffff800867b0>] default_wake_function+0x0/0xe
>>  [<ffffffff8005bc25>] child_rip+0xa/0x11
>>  [<ffffffff8868ce40>] :ptlrpc:ptlrpc_main+0x0/0x1df0
>>  [<ffffffff8005bc1b>] child_rip+0x0/0x11
>>
>> I thought 1.4 could mount a 1.6 filesystem.
>
> Only if the filesystem was previously upgraded from a 1.4 system.  If
> it was formatted as 1.6 initially there is no "downgrade"  
> compatibility
> in the configuration logs.
>
> Cheers, Andreas
> --
> Andreas Dilger
> Sr. Staff Engineer, Lustre Group
> Sun Microsystems of Canada, Inc.
>

Aaron Knister
Associate Systems Analyst
Center for Ocean-Land-Atmosphere Studies

(301) 595-7000
aaron at iges.org







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