Currently, when a backup is created, a LVM snapshot of the disk is made. This snapshot has the same size as the original.
This means you need to leave a *lot* of free space on each data store. Since a backup will complete in a relatively short amount of time, the snapshot will never fill for more than a few percent.
So, I'd like to have smaller LVM snapshots when taking backups. Perferably a configurable percentage of the original disk size.
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