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NFSv4 mount hung on UNIX Volume or Qtree

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672
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Votes:
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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9.7 onwards
  • NFS4
  • UNIX Volume or Qtree

Issue

  • NFS client hangs when attempting to mount the UNIX Qtree or Volume with nfs4. No error message on the client
  • Packet trace shows a loop of NFS4ERR_DELAY response to the client ACCESS call during the mount
135 2021-04-30 15:47:46.742518 10.10.10.10 172.20.20.20 NFS 797 2049 5649 2569 1 0 180 V4 Call (Reply In 137) ACCESS FH: 0x85efdd5e, [Check: RD LU MD XT DL]
137 2021-04-30 15:47:46.941715 172.20.20.20 10.10.10.10 NFS 2049 797 2569 5829 1 56 V4 Reply (Call In 135) ACCESS Status: NFS4ERR_DELAY
  • The SecD log shows name mapping for UNIX user root failure with transient errors.
[kern_secd:info:17708] Error: Get user credentials procedure failed
[kern_secd:info:17708] [ 0 ms] Determined UNIX id 0 is UNIX user 'root'
[kern_secd:info:17708] [ 0] Trying to map 'root' to Windows user 'root' using implicit mapping
[kern_secd:info:17708] [ 1] Successfully connected to ip 172.20.20.30, port 445 using TCP
[kern_secd:info:17708] [ 11] Successfully authenticated with DC pratsdc01.alise.intraxa
[kern_secd:info:17708] [ 14] Encountered unknown NT Error (0x103) for SMB command Read
[kern_secd:info:17708] [ 144] Could not find Windows name 'root'
[kern_secd:info:17708] **[ 144] FAILURE: Name mapping for UNIX user 'root' failed with transient errors.

 

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