processes reading the same file on a cifs share block indefinitely on cifsInodeInfo.lock_sem semaphore after a network disruption or server restart

Solution Verified - Updated -

Issue

One or more processes block indefinitely on a cifs share after a network disruption or cifs server restart. The workload involves many processes reading the same file.

Environment

  • Red Hat Enterprise Linux 8
  • cifs
  • workload of many processes reading the same file
  • network or server issues leading to cifs client to reconnect

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