Brief disruption of GPFS on 8/28/2013

On the morning August 28th, 2013 we will briefly disrupt the GPFS filesystem to reboot servers. This is necessary to upgrade the GPFS system. The in-place upgrade should only briefly interrupt service to the GPFS filesystem, and the outage should only last a few minutes. Running jobs should pause until the system returns to service.

Please contact OSC Help if you experience any problems.

Poor network performance on some filesystems

We are experiencing some network performance issues on a cluster of servers involved with providing GPFS and some project filesystems. GPFS appears to be functioning acceptably, but proj01, proj02, proj03, proj08, and proj09 are not. Compute nodes attempting to write to these filesystems will see very slow write speeds.

The root cause has been identified as a damaged fiber optic cable. We will be replacing this cable, and expect an outage of less than one minute to the affected hosts.

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