[Lustre-discuss] What is the proper way to rebuild a MGS/MDT node?

Jeremy Mann jeremy at biochem.uthscsa.edu
Mon Apr 5 09:29:09 PDT 2010


The drive in our MGS/MDT node is failing. Previously what we have done in
the past was to copy the contents of /lustre to a backup server, replace
the drive and recreate our Lustre environment on the MGS/MDT node as well
as the OSTs, then copy everything back. I'm just curious if this is the
proper way to do it.

Currently, the meta server is only using 570MB of space so I'm thinking of
doing it different this time (to speed up the process). In section 15.2 in
the 1.6 manual, there is example of using dd to block copy one device to
another. If I choose this method, is it as simple as block dd copy to the
new drive, reboot and mount the new device as the MGS/MDT node, or are
there other steps involved?


-- 
Jeremy Mann
jeremy at biochem.uthscsa.edu

University of Texas Health Science Center
Bioinformatics Core Facility
http://www.bioinformatics.uthscsa.edu
Phone: (210) 567-2672




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