[lustre-discuss] migrating MDS to different infrastructure

[Mohr Jr, Richard Frank (Rick Mohr)]

> On Oct 29, 2018, at 1:12 AM, Riccardo Veraldi <Riccardo.Veraldi at cnaf.infn.it> wrote:
> 
> it is time for me to move my MDS to a diferent HW infrastructure.
> So I Was wondering if the following procedure can work.
> I have mds1 (old mds) and mds2 (new mds). On the old mds I have a zfs MGS partition and a zfs MDT partition.
> 	• create a new ZFS  MGS and MDT partition on mds2 and create a lustre FS on it
> 	• umount lustre on mds2
> 	• stop all the OSSes belonging to mds1 and stop and umount lustre on mds1
> 	• zfs send the MGS partition from mds1 and zfs receive it on mds2
> 	• zfs send the MGT partition from mds1 and zfs receive it on mds2
> 	• mount lustre on mds2
> should it work ?

I think that should work, except that in the first step you don’t need to create a lustre FS on the new pools.

--
Rick Mohr
Senior HPC System Administrator
National Institute for Computational Sciences
http://www.nics.tennessee.edu