[Lustre-discuss] MGS - one per site

[Andreas Dilger]

On Jun 26, 2009  18:20 -0400, David Dillow wrote:
> Are there any plans to eliminate this restriction? Data transfer nodes
> for gridftp want to be able to mount separate Lustre filesystems from
> different compute resources, which quite often have a MGS for each
> filesystem, especially if they are Cray systems that have seen upgrades
> from Lustre 1.4.

So far it hasn't come up as a requirement.

> Is it possible to split an MGT from a combined MGT/MDT, and then combine
> those into one MGT? That would be a migration path for those systems
> with multiple filesystems -- much better than a complete reformat,
> anyways.

Yes, this is in the 1.4->1.6 documentation.

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