[lustre-discuss] Quick ZFS pool question?

Phill Harvey-Smith p.harvey-smith at warwick.ac.uk
Thu Oct 6 02:04:46 PDT 2016

Hi all,

Having tested a simple setup for lustre / zfs, I'd like to trey and 
replicate on the test system what we currently have on the production 
system, which uses a much older version of lustre (2.0 IIRC).

Currently we have a combined mgs / mds node and a single oss node. we 
have 3 filesystems : home, storage and scratch.

The MGS/MDS node currently has the mgs on a seperate block device and 
the 3 mds on a combined lvm volume.

The OSS has an ost each (on a separate disks) for scratch and home and 
two ost for storage.

If we migrate this setup to a ZFS based one, will I need to create a 
separate zpool for each mdt / mgt / oss  or will I be able to create a 
single zpool and split it up between the individual mdt / oss blocks, if 
so how do I tell each filesystem how big it should be?



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