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  1. Lustre
  2. LU-13594

register OOM callback in Lustre

    Details

    • Type: Improvement
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: Lustre 2.14.0
    • Fix Version/s: None
    • Labels:
    • Rank (Obsolete):
      9223372036854775807

      Description

      It would be useful to register an OOM callback in Lustre using register_oom_notifier() (and deregister at shutdown with unregister_oom_notifier(), firstly in libcfs and obdclass to print the current libcfs_kmemory and memused_show()/memused_max_show(), as well as potentially trying to shrink caches (e.g. the number of LNet message buffers, debug logs, etc.) before a userspace process is killed.

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-14456 ost-pools test_23b: ll_ost_io00_007 invoked oom-killer

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open

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              • Assignee:
                eaujames Etienne Aujames
                Reporter:
                adilger Andreas Dilger
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                Dates

                • Created:
                  Updated: