Issue Backup creation to remote FTP storage fails due to local disk space check

[Blixary]

Title: Backup creation to remote FTP storage fails due to local disk space check

Hello,

I encountered an issue with the Plesk Backup Manager that appears to be incorrect behavior.

Environment​

• Plesk Obsidian
• Backup destination: Remote FTP(S) storage
• Remote connection test: Successful

Problem Description​

I configured a remote FTP(S) server as backup storage in the Backup Manager. The connection test works without any issues.

When I manually start a backup and explicitly select the option to store the backup on the remote FTP(S) server, the backup process starts for a few seconds and then immediately aborts.

The downloaded log file contains the following error message:

"There is not enough disk space at /var/lib/psa/dumps to backup creation. At least 58.00 GB free space is required (57.43 GB is available)"

Expected Behavior​

Since the backup target is the remote FTP(S) storage, the backup process should either:

• stream the backup directly to the remote storage, or
• require only minimal temporary local disk space.

The process should not fail because the local /var/lib/psa/dumps directory lacks enough free space when the actual destination is remote storage with sufficient available capacity.

Actual Behavior​

Plesk still performs a local free-space check against /var/lib/psa/dumps and aborts the backup creation, even though the backup is configured to be stored remotely.

​

How can I fix this? Thanks in advance.

 

[Bitpalast]

Backups cannot be written to an external FTP repository directly. Some sort of temporary files are required. They are stored in the path DUMP_TMP_D defined in /etc/psa/psa.conf. Also, a local copy of the data that needs to be packed and uploaded plus a few XML data files on the backup of the server, the subscriptions, clients, domains are stored in the path DUMP_D, also defined in /etc/psa/psa.conf. More information can be found in https://support.plesk.com/hc/en-us/...tion-for-Plesk-backup-files-on-a-Linux-server