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  1. CernVM
  2. CVM-1854

Too many symbolic links

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Details

    • Bug
    • Status: Open
    • High
    • Resolution: Unresolved
    • CernVM-FS 2.6.3
    • None
    • CERNVM
    • Bug report
    • 5 - Blocker
    • x86_64-slc6-gcc62-opt

    Description

      ongoing problem since more than a year. The node has 48 cores. Typically when there are >40 jobs (one per core) we run into this problem with too many symbolic links

       

      [root@cmsrm-wn145 (wn)~]# ls /cvmfs/cms.cern.ch/

      ls: cannot access /cvmfs/cms.cern.ch/: Too many levels of symbolic links

      once the number of jobs decreases then it is possible to mount the directory again. In the past I noticed that it could be related to the number of open files

       

      [root@cmsrm-wn145 (wn)~]# su - pilcms45

      [pilcms45@cmsrm-wn145 ~]$ ulimit -a

      core file size          (blocks, -c) 0

      data seg size           (kbytes, -d) unlimited

      scheduling priority             (-e) 0

      file size               (blocks, -f) unlimited

      pending signals                 (-i) 515173

      max locked memory       (kbytes, -l) 64

      max memory size         (kbytes, -m) unlimited

      open files                      (-n) 2048

      pipe size            (512 bytes, -p) 8

      POSIX message queues     (bytes, -q) 819200

      real-time priority              (-r) 0

      stack size              (kbytes, -s) 10240

      cpu time               (seconds, -t) unlimited

      max user processes              (-u) 1024

      virtual memory          (kbytes, -v) unlimited

      file locks                      (-x) unlimited

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            Unassigned Unassigned
            rahatlou Shahram Rahatlou
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              Created:
              Updated: