[Lustre-discuss] Moving MGS to separate device

[Brian J. Murrell]

On Sun, 2009-10-11 at 19:05 +0200, Bernd Schubert wrote:
> 

Bernd,

> I already did this several times, here are the steps I so far used:
> 
> 1) Remove MGS from MDT-device
> 
> tunefs.lustre --nogms /dec/mdt_device
> 
> 2) Create new MGS
> 
> mkfs.lustre --mgs /dev/mgs_device
> 
> 3) Make sure OSTs and  MDTs re-register with the MGS:
> 
> tunefs.lustre --writeconf  /dev/device
> 
> I'm not sure if writeconf is really necessary, but so far I always did it to 
> make sure everything goes smoothly (clients shouldn't have the filesystem 
> mounted at this step).
> 
> 5) Mount MGS, MDT, OSTs
> 
> 4) Re-apply settings done with lctl.
> 
> 
> As you also wrote (private mail), it might be possible to just copy over the 
> CONFIGS directory, but I never tried to do that.

Could you file a bug in our bugzilla to get this procedure added to the
manual?

Thanx,
b.

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