March-20

  • dCache Upgrade Follow-ups:
    • add CMS TFC config to xrootd door on SE node (https://www.dcache.org/downloads/xrootd4j/index.shtml)
    • implement postgress backup script to copy DB to t3nfs02:/zfs/data01/swshare/postgres
    • dcache after upgrade became too verbose and filled out /var/log partition; to fix the problem dcache restart was done on Sun Mar 15 (without user activity)
  • Storage Cleaning due to almost no free space on dcache:
    • deletion of leftover user data took several days. Too many (hundred thousands) files in single directories: dcache can't handle it
    • overal clenup brought ~ 30% free space; next step is needed - check and clean ~150TB of mc, data dirs
  • Slurm:
    • add QoS (500 cpu/user) to quick partition
    • EOS test configuration (enabled on Worker Nodes and UIs): since February no user feedback
  • Monitoring:
  • all configuration changes saved on hiera/puppet/gitlab
  • most of this list was done remotely from home with no drop in efficiency in compare to work from PSI office

-- NinaLoktionova - 2020-03-30

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Topic revision: r1 - 2020-03-30 - NinaLoktionova
 
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