[Lustre-discuss] MGS - one per site

[Brian J. Murrell]

On Fri, 2009-06-26 at 10:52 -0500, Carlos Santana wrote:
> Can a lustre file system have more than one MGS?

No.  It can have multiple failover paths to a single MGS, but max. 1 MGS
per filesystem.

> Isn't it only one per
> site?

It can be, and that's how it was designed.  IOW, a single MGS can serve
multiple filesystems.

> I saw some examples where target type mgs was mentioned during
> mkfs.lustre for MDS and OSS nodes.

Yes.  You have to tell the MDSes and OSSes (and clients, via their mount
target) where the MGS(es, for failover) are.

b.

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