1. Create a backup of a filesystem/partition.

Use the savefs option of fsarchiver like this:

        fsarchiver savefs backup.fsa /dev/sda1

Here backup.fsa is the final backup file and /dev/sda1 is the partition to backup

2. Back-up more than one partition at the same time.

Use the savefs option as earlier and pass the partitions as the last parameters to fsarchiver:

        fsarchiver savefs backup.fsa /dev/sda1 /dev/sda2

3. Restore a partition from a backup archive.

Use the restfs option of fsarchiver like this:

        fsarchiver restfs backup.fsa id=0,dest=/dev/sda1

id=0 denotes that we want to pick the first partition from the archive to the partition specified as dest=/dev/sda1.

Restore multiple partitions from a backup archive.

As earlier, use the restfs option as follows:

      fsarchiver restfs backup.fsa id=0,dest=/dev/sda1    
      id=1,dest=/dev/sdb1

Here, we use two sets of the id,dest parameter to tell fsarchiver to restore the first two partitions from the backup to two physical partitions.