From ebdd32854c547ade7ae5e46355ca11c8ec5ead4a Mon Sep 17 00:00:00 2001
From: Gardouille <gardouille@gmail.com>
Date: Mon, 19 Oct 2020 18:37:48 +0200
Subject: [PATCH] Detect BTRFS filesystem

---
 debian/chroot.mount | 51 ++++++++++++++++++++++++++++-----------------
 1 file changed, 32 insertions(+), 19 deletions(-)

diff --git a/debian/chroot.mount b/debian/chroot.mount
index 25fdd17..a6d4139 100755
--- a/debian/chroot.mount
+++ b/debian/chroot.mount
@@ -15,6 +15,14 @@ new_hostname=""
 vgname=$(vgdisplay --short | tail -n 1 | sed 's/.*"\(.*\)" .*/\1/')
 ## If the script should create extra volume (eg. backup, virt, Proxmox,…)
 manage_extra_lv=0
+## Is BTRFS {{{
+root_fs_type=$(lsblk -f /dev/mapper/"${vgname}"-root | awk '/root/ { print $2 }')
+if [ "${root_fs_type}" = "btrfs" ]; then
+	manage_btrfs=0
+else
+	manage_btrfs=1
+fi
+## }}}
 ## Colors definition {{{
 BLACK='\033[49;30m'
 BLACKB='\033[49;90m'
@@ -35,27 +43,32 @@ RESET='\033[0m'
 mkdir -p -- /target
 mountpoint -q /target            || mount -- /dev/mapper/"${vgname}"-root /target
 
-### boot - grub
-mountpoint -q /target/boot       || mount -- ${hdd}1 /target/boot
+##
+if [ "${manage_btrfs}" -eq 0 ]; then
+	printf '%b\n' "The root system is in ${GREEN}BTRFS${RESET}, no extra mount is required."
+else
+	### boot - grub
+	mountpoint -q /target/boot       || mount -- ${hdd}1 /target/boot
 
-#### home LV
-mountpoint -q /target/home       || mount -- /dev/mapper/"${vgname}"-home /target/home
-#### opt LV
-mountpoint -q /target/opt        || mount -- /dev/mapper/"${vgname}"-opt /target/opt
-#### srv LV
-mountpoint -q /target/srv        || mount -- /dev/mapper/"${vgname}"-srv /target/srv
-#### tmp LV
-mountpoint -q /target/tmp        || mount -- /dev/mapper/"${vgname}"-tmp /target/tmp
-#### usr LV
-mountpoint -q /target/usr        || mount -- /dev/mapper/"${vgname}"-usr /target/usr
-#### var LV
-mountpoint -q /target/var        || mount -- /dev/mapper/"${vgname}"-var /target/var
+	#### home LV
+	mountpoint -q /target/home       || mount -- /dev/mapper/"${vgname}"-home /target/home
+	#### opt LV
+	mountpoint -q /target/opt        || mount -- /dev/mapper/"${vgname}"-opt /target/opt
+	#### srv LV
+	mountpoint -q /target/srv        || mount -- /dev/mapper/"${vgname}"-srv /target/srv
+	#### tmp LV
+	mountpoint -q /target/tmp        || mount -- /dev/mapper/"${vgname}"-tmp /target/tmp
+	#### usr LV
+	mountpoint -q /target/usr        || mount -- /dev/mapper/"${vgname}"-usr /target/usr
+	#### var LV
+	mountpoint -q /target/var        || mount -- /dev/mapper/"${vgname}"-var /target/var
 
-if [ "${manage_extra_lv}" -eq 0 ]; then
-	### Extra bkp LV
-	mountpoint -q /target/srv/backup || mount -- /dev/mapper/"${vgname}"-bkp /target/srv/backup
-	### Extra vz LV
-	mountpoint -q /target/var/lib/vz || mount -- /dev/mapper/"${vgname}"-vz /target/var/lib/vz
+	if [ "${manage_extra_lv}" -eq 0 ]; then
+		### Extra bkp LV
+		mountpoint -q /target/srv/backup || mount -- /dev/mapper/"${vgname}"-bkp /target/srv/backup
+		### Extra vz LV
+		mountpoint -q /target/var/lib/vz || mount -- /dev/mapper/"${vgname}"-vz /target/var/lib/vz
+	fi
 fi
 
 ### Swap