VNX: A file database error was detected

When upgrading the VNX File OE from 8.1.6.96 to a later version or running the dbchk command, users receive an error message "File system with id xxxxx had a mount record present in /nas/server/xxxxx/mount file but was not in use in filesys table. " 

Eg: $ /nas/tools/dbchk
Error: File system with id 24557 has mount record present in /nas/server/slot_2/mount file but is not in use in filesys table.

 It is a known issue in VNX File code 8.1.6.96 and later.

Manually fix file system table inconsistencies by re-mounting the file server in the following way:

1. Running the following File CLI command to discover which server on which the file system is mounted:

 # nas_fs -info id=<file system ID>
 
Using the the id value obtained from the error message

2. Run the following File CLI command:

 # server_mount <server_name> id=<file system ID>
 
Using the server_name obtained from the previous command (Item #1).

Run the /nas/tools/dbchk command to confirm.