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Entry  Thu Dec 13 22:56:28 2018, gautam, Update, CDS, Frames 
    Reply  Fri Dec 14 14:25:36 2018, Koji, Update, CDS, chiara backup fsck_log.log
Message ID: 14356     Entry time: Thu Dec 13 22:56:28 2018     Reply to this: 14359
Author: gautam 
Type: Update 
Category: CDS 
Subject: Frames 

[koji, gautam]

We looked into the /frames situation a bit tonight. Here is a summary:

  1. We have already lost some second trend data since the new FB has been running from ~August 2017.
  2. The minute trend data is still safe from that period, we believe.
  3. The Jetstor has ~2TB of trend data in the /frames/trend folder.
    • This is a combination of "second", "minute_raw" and "minute".
    • It is not clear to us what the distinction is between "minute_raw" and "minute", except that the latter seems to go back farther in time than the former.
    • Even so, the minute trend folder from October 2011 is empty - how did we manage to get the long term trend data?? From the folder volumes, it appears that the oldest available trend data is from ~July 24 2015.

Plan of action:

  1. The wiper script needs to be tweaked a bit to allow more storage for the minute trends (which we presumably want to keep for long term).
  2. We need to clear up some space on FB1 to transfer the old trend data from Jetstor to FB1.
  3. We need to revive the data backup via LDAS. Also summary pages.

BTW - the last chiara (shared drive) backup was October 16 6 am. dmesg showed a bunch of errors, Koji is now running fsck in a tmux session on chiara, let's see if that repairs the errors. We missed the opportunity to swap in the 4TB backup disk, so we will do this at the next opportunity.

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