#!/bin/sh . /lib/partman/lib/base.sh btrfs=no for dev in $DEVICES/*; do [ -d "$dev" ] || continue cd $dev partitions= open_dialog PARTITIONS while { read_line num id size type fs path name; [ "$id" ]; }; do [ "$fs" != free ] || continue [ -f $id/method -a -f $id/acting_filesystem ] || continue filesystem=$(cat $id/acting_filesystem) case $filesystem in btrfs) btrfs=yes ;; esac done close_dialog done if [ "$btrfs" = yes ]; then apt-install btrfs-tools || true fi