The /work filesystem on tre is down (from 07:30), most probably due to disk failure.
We are looking into the issue.
Update (10:55): The /work filesystem is un-recoverable. We are creating a new /work filesystem from the remaining functioning disks. All data on /work is then of course lost.
Update (12:30): All nodes and filesystems are up again.
NB: You must check that you have the necessary folders in /work ready before you submit your jobs.