How to force full or incremental backups in the amanda config

Incremental or full backups can be defined in the /etc/amanda/template.d/dumptypes:

1. strategy noinc does level 0 dumps every time.

define dumptype comp-user-tar-full {
   user-tar
   compress client fast
   strategy noinc 
}

2. strategy nofull does level 1 dumps every time. This can be used, for example, for small root filesystems that only change slightly relative to a site-wide prototype. Amanda then backs up just the changes.

define dumptype comp-user-tar-inc {
   user-tar
   compress client fast
   strategy nofull
}