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File operations receive permission denied on Kerberized NFS V4 mount point

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Category:
ontap-9
Specialty:
nas
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Applies to

  • NFS V4
  • KERBEROS Authentication
  • ONTAP 9

Issue

  • Permission denied seen on file operations after delay
  • The packet reviewed that ONTAP was not responding to the Kerberos context initialization in the V4 Null Call
    • Packettrace.png
  • From this we looked at SECD and saw that the time to build the credential took a long time maxConnectionSem held for 49 seconds for cache 
    • 00000014.0471bf1f 04d6f225 Tue Aug 13 2024 20:03:45 +05:30 [kern_secd:info:12179] | [050.739.625]  CRIT :  _maxConnectionSem held for 49 seconds for cache ref ID 1422333361, conn type LDAP (NIS & Name Mapping)  { in semaphoreReleased() at src/include/secd_thread_data_manager.h:219 }

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