[Lustre-discuss] Migrating so all MGS/MDTs on same node

Cliff White cliffw at whamcloud.com
Thu Mar 31 08:01:48 PDT 2011


You can't mount two MGS on the same node. The MGS NID has to be unique.

On Thu, Mar 31, 2011 at 2:22 AM, Andrus, Brian Contractor
<bdandrus at nps.edu>wrote:

> All,
>
>
>
> We have a system that was grown from 3 separate lustre filesystems and I
> would like to set it up so they share mgs/mdt services from a single node
> (so the mount points on clients all use the same ‘server’.
>
>
>
> I have tried doing a writeconf and changing the mgs nid on the osts and
> mdts, but when I try mounting the mdt on the new system (which already has
> one mgs/mdt mounted) I get:
>
>
>
> mount.lustre: mount /dev/VG_hamming/work_mdt at /mnt/lustre/work/mdt
> failed: Operation already in progress
>
> The target service is already running. (/dev/VG_hamming/work_mdt)
>
>
>
> But if I immediately try again, it works.
>
> Anyone know why this is?
>
>
>
> Running lustre_1.8.5 using ext4 rpms
>
>
>
> Brian Andrus
>
> ITACS/Research Computing
>
> Naval Postgraduate School
>
> Monterey, California
>
> voice: 831-656-6238
>
>
>
> _______________________________________________
> Lustre-discuss mailing list
> Lustre-discuss at lists.lustre.org
> http://lists.lustre.org/mailman/listinfo/lustre-discuss
>
>


-- 
cliffw
Support Guy
WhamCloud, Inc.
www.whamcloud.com
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