Backup task has finished with a warning: Cannot open or Permission denied

Symptoms

• A backup cannot be restored, following error is returned instead:

  PLESK_ERROR: Archive error: Unable to extract files from /var/lib/psa/dumps/domains/example.com/backup_user-data_1805242210.tar to /var/www/vhosts/example.com: /bin/tar: httpdocs/administrator/backups/index.html: Cannot open: File exists
  /bin/tar: httpdocs/administrator/cache/index.html: Cannot open: File exists
  /bin/tar: httpdocs/administrator/components/com_admin/admin.admin.php: Cannot open: File exists
  /bin/tar: httpdocs/administrator/components/com_admin/index.html: Cannot open: File exists
  /bin/tar: httpdocs/administrator/components/com_admin/admin.admin.html.php: Cannot open: File exists
  /bin/tar: httpdocs/administrator/components/com_admin/toolbar.admin.php: Cannot open: File exists

  OR

  PLESK_ERROR: Archive error: Unable to extract files from /var/lib/psa/dumps/domains/example.com/backup_user-data_1805242210.tar to /var/www/vhosts/example.com: /bin/tar: /var/lib/psa/dumps/: Permission denied
  /bin/tar: Error is not recoverable: exiting now

• Permissions on these folders forbid owner to create files (there are no “w” in the output of ls):

  # ls -ld /var/www/vhosts/example.com/httpdocs/administrator/
  dr-xr-xr-x 2 user psacln 4096 Jun 8 18:30

Cause

Backup Manager is unable to create files as user due to the insufficient permissions.

Resolution

1. Connect to the server via SSH

2. Restore the backup manually from the archive:

   # set +v | tar -f /var/lib/psa/dumps/domains/example.com/backup_user-data_1805242210.tar -xvm –same-permissions –same-owner -C /var/www/vhosts/example.com –wildcards –anchored