There's another problem here. Deja Dup says it will delete older backups when it runs out of space. I'm 100% sure it does not do so. I had a virtual server with 20 GB of disk space dedicated solely to Deja Dup backups, but Deja Dup failed to make any further backups (and failed to present any reasonable error message) due to running out of space. It should have just deleted old backups, like it claimed it would.
There's another problem here. Deja Dup says it will delete older backups when it runs out of space. I'm 100% sure it does not do so. I had a virtual server with 20 GB of disk space dedicated solely to Deja Dup backups, but Deja Dup failed to make any further backups (and failed to present any reasonable error message) due to running out of space. It should have just deleted old backups, like it claimed it would.