> On Oct 29, 2018, at 1:12 AM, Riccardo Veraldi <[email protected]> 
> 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

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