Add a tiny script to complete a Debian Netinstall for Btrfs.

part.btrfs

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+# For Debian install
+# Complete the Btrfs partitionning
+#
+# Source: https://wiki.101010.fr/doku.php?id=debian:installation_btrfs
+
+# Remount the partition with "compress" option
+mount -o remount,defaults,compress=lzo /target
+
+# Create all subvolumes
+btrfs subvolume create /target/home
+btrfs subvolume create /target/opt
+btrfs subvolume create /target/root
+btrfs subvolume create /target/srv
+btrfs subvolume create /target/tmp
+btrfs subvolume create /target/usr
+btrfs subvolume create /target/var
+
+# Specific actions for "etc" subvolume
+mv /target/etc /target/etc.temp
+btrfs subvolume create /target/etc
+mv /target/etc.temp/* /target/etc
+rmdir /target/etc.temp
+
+# Ensure everything is ok
+btrfs subvolume list -p /target
+
+exit 0