From 8:54PM - 9:39PM on March 7th, 2012 the ability to interact with the /scratch filesystem was degraded. Writes that were in progress prior to the start of this outage continued but no new files could be created and directory listings would not have completed.
This issue was a result of a system crash on the metadata server for the Lustre /scratch filesystem. A root cause analysis is scheduled and will be acted upon as appropriate.
We apologize for any inconvenience that this outage may have caused.