@iLix That worked! I guess i forgot to enable NFSv4 after rebuilding it.

We recently rebuilt truenas. The setup allowed me to import the old pool after it scanned the drive. I then tried to create a new SR to the NFS share but it shows 3 different GUIDs and unable to create the SR.

I see 3 different GUIDs and when I click on the icon next to them to "Reattach SR" it says "In use" and then doesn't connect. The error log is
SR_BACKEND_FAILURE_73(, NFS mount error [opterr=mount failed on server 10.10.1.2 with return code 32], )

When I click on "Create" button it also gives the same error. I think those 3 GUIDs corresponds to 3 different xen hosts that were attached to this NFS in the past before I rebuilt truenas. Any ideas what I should do? I don't want to rebuild the pool and lose the data in it.