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How to retrieve your corrupted or deleted /t3home and /work files

Every user can retrieve from snapshots corrupted or deleted files from /t3home or /work . Choose a snapshot dir and copy back either to /t3home/$USER (or /work/$USER) what you need by cp command.

/t3home example:

$ cd /t3home/$USER/.snapshot
$ ls 
daily.2019-02-26_0010  daily.2019-02-27_0010  monthly.2019-02-01_0010  weekly.2019-02-24_001

/work snapshot location example

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

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

[martinelli_f@t3ui01 snapshot]$ ls -l
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

In a case of /work please be aware that if your deleted files are still referenced in snapshots, this will affect your /work space quota (snapshot is a PART OF QUOTA). In that case deleted files are saved 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 /work usage is published here: http://t3mon.psi.ch/PSIT3-custom/space.report

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Topic revision: r14 - 2019-02-27 - NinaLoktionova
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