On 2011-06-22, at 12:32 PM, Roger Spellman wrote:
> I have a 1.8.4 server, and I recently built 2.1 beta client.  Should it be 
> possible to mount the 1.8.4 server using the Lustre 2.1 client.  I cannot. 

As Peter mentioned, this is not possible.

That said, it makes sense to have a single clear error message stating
this instead of what is shown below.

> dmesg shows the following:
>  
> Lustre: OBD class driver, http://www.lustre.org/
> Lustre:         Lustre Version: 2.0.62
> Lustre:         Build Version: 
> ../lustre/scripts--PRISTINE-2.6.32-71.29.1.el6_trunk_roger
> Lustre: Lustre LU module (ffffffffa0323180).
> Lustre: Register global MR array, MR size: 0xffffffffffffffff, array size: 1
> Lustre: Added LNI 10.2.3.113@o2ib [8/64/0/180]
> Lustre: Lustre OSC module (ffffffffa0548a20).
> Lustre: Lustre LOV module (ffffffffa05b0f00).
> Lustre: Lustre client module (ffffffffa0647ae0).
> Lustre: 28105:0:(sec.c:1474:sptlrpc_import_sec_adapt()) import 
> MGC10.2.34.111@o2ib->MGC10.2.34.111@o2ib_0 netid 5000
> 0: select flavor null
> LustreError: 152-6: Ignoring deprecated mount option 'noacl'.
> Lustre: MGC10.2.34.111@o2ib: Reactivating import
> Lustre: Server MGS version (1.8.4.0) is much older. Consider upgrading this 
> client (2.0.62)
> Lustre: 28105:0:(sec.c:1474:sptlrpc_import_sec_adapt()) import 
> IDADTS-MDT0000-mdc-ffff880613540000->10.2.34.111@o2ib
>  netid 50000: select flavor null
> Lustre: Server IDADTS-MDT0000_UUID version (1.8.4.0) is much older. Consider 
> upgrading this client (2.0.62)
> Lustre: client wants to enable acl, but mdt not!
> LustreError: 28105:0:(pack_generic.c:410:lustre_msg_buf_v2()) msg 
> ffff8805f1ce9800 buffer[1] size 168 too small (req
> uired 216, opc=40)
> LustreError: 28105:0:(layout.c:1661:__req_capsule_get()) @@@ Wrong buffer for 
> field `mdt_body' (1 of 2) in format `M
> DS_GETSTATUS': 168 vs. 216 (server)
>   req@ffff8805f1ce9c00 x1372337387601958/t0(0) 
> o-1->[email protected]@o2ib:12/10 lens 408/360 e 0 to 0
>  dl 1308762928 ref 1 fl Complete:R/ffffffff/ffffffff rc 0/-1
> LustreError: 28105:0:(llite_lib.c:419:client_common_fill_super()) cannot 
> mds_connect: rc = -71
> LustreError: 28165:0:(lov_obd.c:482:lov_notify()) event(2) of 
> IDADTS-OST0000_UUID failed: -22
> LustreError: 28165:0:(lov_obd.c:482:lov_notify()) event(2) of 
> IDADTS-OST0001_UUID failed: -22
> Lustre: 28165:0:(client.c:1776:ptlrpc_expire_one_request()) @@@ Request 
> x1372337387601936 sent from IDADTS-OST0002-o
> sc-ffff880613540000 to NID 10.2.34.114@o2ib has failed due to network error: 
> [sent 1308762921] [real_sent 1308762921
> ] [current 1308762921] [deadline 5s] [delay -5s]  req@ffff8805f1cd4800 
> x1372337387601936/t0(0) o-1->IDADTS-OST0002_U
> [email protected]@o2ib:28/4 lens 368/392 e 0 to 1 dl 1308762926 ref 1 fl 
> Rpc:XN/ffffffff/ffffffff rc 0/-1
> Lustre: 28165:0:(client.c:1776:ptlrpc_expire_one_request()) @@@ Request 
> x1372337387601937 sent from IDADTS-OST0003-o
> sc-ffff880613540000 to NID 10.2.34.114@o2ib has failed due to network error: 
> [sent 1308762921] [real_sent 1308762921
> ] [current 1308762921] [deadline 5s] [delay -5s]  req@ffff8805f1cd4000 
> x1372337387601937/t0(0) o-1->IDADTS-OST0003_U
> [email protected]@o2ib:28/4 lens 368/392 e 0 to 1 dl 1308762926 ref 1 fl 
> Rpc:XN/ffffffff/ffffffff rc 0/-1
> LustreError: 28105:0:(ldlm_request.c:1169:ldlm_cli_cancel_req()) Got rc -108 
> from cancel RPC: canceling anyway
> LustreError: 28105:0:(ldlm_request.c:1796:ldlm_cli_cancel_list()) 
> ldlm_cli_cancel_list: -108
> Lustre: client ffff880613540000 umount complete
> LustreError: 28105:0:(obd_mount.c:2151:lustre_fill_super()) Unable to mount  
> (-71)
>  
>  
>  
> Roger Spellman
> Staff Engineer
> Terascala, Inc.
> 508-588-1501
> www.terascala.com <http://www.terascala.com/>
> _______________________________________________
> Lustre-discuss mailing list
> [email protected]
> http://lists.lustre.org/mailman/listinfo/lustre-discuss


Cheers, Andreas
--
Andreas Dilger 
Principal Engineer
Whamcloud, Inc.



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