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    AFS weekly meeting

    → Europe/Zurich
    31/1-012 (CERN)

    31/1-012

    CERN

    6
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    Description
    AFS service/operation meeting
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    AFS operations meeting 2015-01-12

    present: Dan, Massimo, Kuba, Jan

    Issues

    • Dan reported that vm.zone_reclaim_mode really hurts CEPH servers (30s-60s lockups while caches are being flushed prematurely when scrubbing, i.e. NUMA zone is full). Known issue in DB community, per documentation is not appropriate for any kind of fileserver anyway, already off on EOS. Turned off on AFS as well.
    • ABS / xrootd: Jan tried to copy STDIN, didn't work, suggested to hold off work on ABS+xrootd, opened RFE on github. Turns out to have been an old xrootd version, copying from STDIN on xrootd-client-4.1.1 does work.
    • rebasing the CERN AFS tree onto 1.6.10, some issue with the RPM changelog. Discussion on how to keep CERN patches as recognizable units (rebase changes the commit ID), not easy with GIT but don't want to go back to RPM "patch" files.

     

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