Creating a backup of an entire mount point

Webmin allows you to set up backup tasks that use the UNIX dump command to archive the entire ext filesystem's mount points. This strategy has a number of advantages over creating archives using TAR. Firstly, all information contained in the filesystem is preserved, including extended file attributes, ACLs, special files, and so on.

Secondly, dump allows you to create incremental archives containing only the files changed since the previous backup. The dump command uses the concept of levels to distinguish between full and partial backups. A level 0 backup will archive all files (full backup), while a level 1 will only archive files changed since the last level 0 backup. A level 2 backup will archive all files changed since the last level 1 backup, and so on. There are 10 levels to choose from, and you don't need to use consecutive level numbers. One possible dump strategy is to perform a level 0 backup every month, a level 3 backup every week,...