Backups of NFS data complete with “Failed to open file. Permission denied (13)” warning messages (79922)

Date – 10/07
Affected Product & Version – NetVault: Backup 7.4.5 and greater
Affected Module & Version – n/a
OS Version – All supported Unix and Linux platforms
Application Information – n/a

Description:
Netvault requires files in NFS mounted directory to have read access for ‘others’ to successfully backup.

Symptoms:
If files or directories do not have read access for 'others', then backups will complete with warning. A warning message will be displayed for each file that cannot be backed up:
“Failed to open file”
The context of this warning message will contain the information:
Failed to open file ‘/path/to/file’, Permission denied (13)

The fastest way to add read access is to run the following command on the NFS server:

# chmod -R o+r /exported/directory

This will add read access to 'others' for all files and directories in the exported directory, allowing the backup of the data via the hosts that have NFS mounted the directory.