Environment
  • Operating system: Debian GNU/Linux testing (buster) x64
  • Package: BackupPC 3.3.2
How to

Delete a given backup <backupID> for the host <host>:

rm -rf /var/lib/backuppc/pc/<host>/<backupID>

Once done, switch to the backuppc local user and run the script BackupPC_nightly to prune files from pool no longer used:

su - backuppc
/usr/share/backuppc/bin/BackupPC_nightly 0 255

You're done!