The dsnapshot script provides a high-level interface to the Linux Logical Volume Manager. It uses its block-level snapshot support to create directory snapshots. In contrast to block-level snapshots, directory snapshots resemble the file system layer. Thus, you can snapshot any directory that is on a logical volume and you don’t have to worry about the actual logical volumes, mount points and paths.
filesystem-level backup script
Wow. T-Mobile and Danger, the Microsoft-owned subsidiary that makes the Sidekick, has just announced that they’ve likely lost all user data that was being stored on Microsoft’s servers due to a server failure. That means that any contacts, photos, calendars, or to-do lists that haven’t been locally backed up are gone.