Day One of the scheduled downtime has been completed, and HPC operations have resumed. As planned, Lustre work will extend into Day Two. Jobs using /fs/lustre or $PFSDIR cannot run until this work is completed, but all other jobs can run.
UPDATE: Performance problems with Lustre have prevented us from bringing up the filesystem. We are working on a resolution.
UPDATE: Lustre returned to service the afternoon of July 12th, 2014.