[Lustre-discuss] MGS disk size and activity

[Andreas Dilger]

On Jun 17, 2008  12:40 -0700, Klaus Steden wrote:
> I have a question ... if the MGS is used so infrequently relative to the use
> of the MDS, why is it (is it?) problematic to locate it on the same volume
> as the MDT?

If you have multiple MDTs on the same MDS node (i.e. multiple Lustre
filesystems) then it is difficult to start up the MGS separately from
the MDT if it is co-located with one of the MDTs.  It isn't impossible
(with some manual mounting of the underlying filesystems) to move a
co-located MGS to a separate filesystem if needed.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.