How to retrieve your corrupted or deleted /work files

A T3 user can independently retrieve a corrupted or deleted /work file by looking into his/her own snapshots, for instance:

$ cd /work/$USER/.zfs/snapshot

[martinelli_f@t3ui01 ~]$  cd /work/$USER/.zfs/snapshot

[martinelli_f@t3ui01 snapshot]$ ls -la 
total 0
dr-xr-xr-x 2 root root 2 Dec 10 18:01 .
dr-xr-xr-x 1 root root 0 Oct 27 14:22 ..
dr-xr-xr-x 1 root root 0 Dec 10 18:44 zfssnap-day-20161207-011142 <-- Max 2 past days
dr-xr-xr-x 1 root root 0 Dec 10 18:44 zfssnap-day-20161208-014735

Choose a snapshot dir and copy back in /work/$USER/ what you need by an ordinary cp command.

Be aware that if your deleted files are still referenced in snapshots, this will affect your /work space quota. In that case deleted files are stored in this snapshot and snapshot grows in space correspondingly. Till snapshot itself is deleted you do not get a free space . It's a rare event to run over quota and that actually means that you're frequently adding/removing big files in your /work, while you have to use the UI/WN /scratch or the /pnfs areas for that purpose !

Your present/past /work usage is published here :

http://t3mon.psi.ch/PSIT3-custom/space.report