Change of centre storage

We will replace our centre storage system Cstor (serving /c3se) with Cephyr (serving /cephyr). Home directories on Hebbe were moved during the CentOS7 update, and now home directories on Vera will follow as the next step.

Switching of home directory path on Vera

The Vera home directory path will be switched from /c3se/users/$CID/Vera to /cephyr/users/$CID/Vera on 2020-03-17 at 10:00. Jobs in the queue might be negatively affected by the transition if they rely on; $HOME or ~ paths, or if it relies on setting up job environments via your .bashrc or .bash_profile.

There may be other corner cases as well where your scripts may fails.

$SNIC_NOBACKUP and all project storage paths are unchanged during this transition, but please remember that we will be removing $SNIC_NOBACKUP soon.

You will need to update your scripts etc. and re-submit any jobs that fail during the transition.

New centre storage Cephyr (/cephyr)

  • The new Vera home directory on Cephyr is /cephyr/users/$CID/Vera
  • Quota: 30GiB, 60k files (backed up), shared across Hebbe and Vera $HOME.
  • Quota is enforced directly by the operating system, i.e. jobs will be prevented from writing over the quota.
  • There is and will be no personal NOBACKUP area on Cephyr. Additional storage beyond your home directory on Cephyr must be applied via storage projects! See https://supr.snic.se/round/storage/
  • You can continue to use C3SE_quota to see your available storage areas, current usage and limits.

Old centre storage Cstor (/c3se)

  • Old areas will remain accessible in the short term, allowing for time to move files over. Both old and new areas are already directly accessible from both all Vera and Hebbe machines.
  • No automatic transfer of old data: users must move what they want to keep off the old area! (And please please delete stuff no longer needed!).
  • Everything under /c3se will be removed later this spring.