NFSv4 mount hung on UNIX Volume or Qtree

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Views:: 492

Visibility:: Public

Votes:: 2

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.