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Mount operation fails with permission denied due to IP address translation by the NAT service

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Category:
ontap-9
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nas
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Applies to

  • ONTAP 9
  • NFS
  • Network Address Translation (NAT) service.

Issue

  • Mount operation fails with "Permission denied" despite correct permission settings on storage and client end.
[root@linux1 ~]# mount -t nfs -o vers=3,tcp 10.20.30.40:/vol -vvv
mount.nfs: timeout set for Mon Dec 7 16:28:48 2020
mount.nfs: trying text-based options 'vers=3,tcp,addr=10.20.30.40'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 10.20.30.40 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 10.20.30.40 prog 100005 vers 3 prot TCP port 635
mount.nfs: mount(2): Permission denied
mount.nfs: access denied by server while mounting 10.20.30.40:/vol
  • NAT service is used in the environment to mask the client IP addresses.

 

 

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