When you attempt to perform a backup to a Common Internet File System (CIFS)-mounted drive, you may receive errors that resemble the following example:
/bin/cp: failed to preserve ownership for `': Permission denied /bin/cp: failed to preserve ownership for `': Permission denied
These permission denied errors may result from missing extended attributes on the CIFS-mounted drive. This document describes how to resolve these permission denied errors.
To resolve the permission denied errors for the CIFS-mounted drive, perform the following steps:
/etc/fstab file so that the CIFS-mounted drive uses the
user_xattr option. This will resemble the following example:
We strongly recommend that you store your CIFS-mounted drive's access credentials in a separate, secure file.
/dev/mapper/centos_centos--7--clone-root / xfs defaults 1 1 UUID=01c6e08e-bbd1-4046-af48-beaf233746d4 /boot xfs defaults 1 2 /dev/mapper/centos_centos--7--clone-swap swap swap defaults 0 0 //192.0.2.0/mybackup /user_xattr cifs user,uid=500,rw,suid, credentials=/root/.cifs 0 0
In this example, line
remount mountcommand to remount the CIFS-mounted drive.
lsattr /CIFS_mount command to add the extended attributes.
The mount does not support extended attributes if the
A mount that does not support extended attributes will not function with cPanel & WHM backups.
For more information about CIFS, read our Backup Configuration documentation.