[Lustre-discuss] unable to mount ost after mdt migration and mds/mgs failover configuration

[Michael Barnes]

Update:

If I do this:

tunefs.lustre --writeconf --erase-param --param mgsnode=172.17.4.123 at o2ib --param ost.quota_type=ug2 --fsname=lustre /dev/sdc

ie, no failover specification on the mgsnode the ost mounts.

Do I have the wrong syntax in the below line?

tunefs.lustre --writeconf --erase-param --param mgsnode=172.17.4.123 at o2ib:172.17.4.124 at o2ib --param ost.quota_type=ug2 --fsname=lustre /dev/sdc

Thanks in advance,

-mb

On Feb 24, 2011, at 10:38 AM, Michael Barnes wrote:

> 
> Hello list,
> 
> I've migrated our mdt data to a new machine via tar and getfattr, and then did the following:
> 
> mds/mgs: rm OBJECTS/* CATALOGS
> 
> mds/mgs: tunefs.lustre --writeconf --mgs --mdt --fsname=lustre --erase-param --param mdt.quota_type=ug2 --param mdt.group_upcall=/usr/sbin/l_getgroups --param failover.node=172.17.4.124 at o2ib /dev/sdb
> 
> mds/mgs: mount -t lustre /dev/sdb /mdt
> 
> 
> Everything seems OK up to this point.
> 
> 
> I then modified each ost with:
> 
> oss: tunefs.lustre --writeconf --erase-param --param mgsnode=172.17.4.123 at o2ib:172.17.4.124 at o2ib --param ost.quota_type=ug2 /dev/sdb
> 
> 
> Then, when I try to mount the ost I get in dmesg:
> 
> Lustre: 3269:0:(client.c:1476:ptlrpc_expire_one_request()) @@@ Request x1361639653769217 sent from MGC172.17.4.123 at o2ib to NID 172.17.4.124 at o2ib 0s ago has failed due to network error (5s prior to deadline).
>  req at ffff810133f24800 x1361639653769217/t0 o250->MGS at MGC172.17.4.123@o2ib_0:26/25 lens 368/584 e 0 to 1 dl 1298560772 ref 1 fl Rpc:N/0/0 rc 0/0
> LustreError: 3164:0:(client.c:858:ptlrpc_import_delay_req()) @@@ IMP_INVALID  req at ffff810106b39c00 x1361639653769218/t0 o253->MGS at MGC172.17.4.123@o2ib_0:26/25 lens 4736/4928 e 0 to 1 dl 0 ref 1 fl Rpc:/0/0 rc 0/0
> LustreError: 3164:0:(obd_mount.c:1097:server_start_targets()) Required registration failed for lustre-OST0037: -108
> LustreError: 3164:0:(obd_mount.c:1655:server_fill_super()) Unable to start targets: -108
> LustreError: 3164:0:(obd_mount.c:1438:server_put_super()) no obd lustre-OST0037
> LustreError: 3164:0:(obd_mount.c:147:server_deregister_mount()) lustre-OST0037 not registered
> 
> 
> The first mds/mgsnode has the mdt mounted.  lctl ping and regular TCP/ip works over the ib interface.  Did I miss something that the ost needs to join the new mds/mgs configuration?
> 
> Thanks,
> 
> -mb 
> 
> --
> +-----------------------------------------------
> | Michael Barnes
> |
> | Thomas Jefferson National Accelerator Facility
> | Scientific Computing Group
> | 12000 Jefferson Ave.
> | Newport News, VA 23606
> | (757) 269-7634
> +-----------------------------------------------
> 
> 
> 
> 
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> Lustre-discuss at lists.lustre.org
> http://lists.lustre.org/mailman/listinfo/lustre-discuss

--
+-----------------------------------------------
| Michael Barnes
|
| Thomas Jefferson National Accelerator Facility
| Scientific Computing Group
| 12000 Jefferson Ave.
| Newport News, VA 23606
| (757) 269-7634
+-----------------------------------------------