Unable to create backups and upload to the storage

Symptoms

Creating backups in the control panel fails with the error «Failed to create backup».

When attempting to upload a created backup to the storage, the error like this is registered in the log at /usr/local/mgr5/var/backup2_cp.log:

main ERROR No disk space left on storage. Size limit: 16127602196

Causes

 Storage size limit in the backup settings of the control panel is insufficient for new user copies.

Solution

To check the total size of a user's copy, use the du -sh command for the directory the data is located in:

du -sh /var/www/USERNAME/data/

You can increase the storage size limit in the backup settings.