From 7a05467616beae0d9df326a5384543100f50950a Mon Sep 17 00:00:00 2001
From: simono41 <simono41>
Date: Thu, 21 Jun 2018 06:56:45 +0200
Subject: [PATCH] btrfs-snapshotboot

---
 arch-install |  3 +++
 snapshot.sh  | 43 ++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 43 insertions(+), 3 deletions(-)

diff --git a/arch-install b/arch-install
index 256fee0..c377a54 100755
--- a/arch-install
+++ b/arch-install
@@ -472,6 +472,9 @@ function installation {
 
     fi
 
+    #forbtrfssnapshots
+    cp ${mountpoint}/etc/fstab ${mountpoint}/etc/fstab.example
+
 
 
 
diff --git a/snapshot.sh b/snapshot.sh
index 692611d..cf0c38d 100755
--- a/snapshot.sh
+++ b/snapshot.sh
@@ -19,15 +19,52 @@ if [ "make" == "$1" ]; then
         echo `date "+%Y%m%d-%H%M%S"` > /run/btrfs-root/__current/${pfad}/SNAPSHOT
         echo "BACKUP" >> /run/btrfs-root/__current/${pfad}/SNAPSHOT
 
-        mkdir -p /run/btrfs-root/__snapshot/${pfad%/*}
-        btrfs subvolume snapshot -r /run/btrfs-root/__current/${pfad} /run/btrfs-root/__snapshot/${pfad}@`head -n 1 /run/btrfs-root/__current/${pfad}/SNAPSHOT`
 
-        rm /run/btrfs-root/__current/${pfad}/SNAPSHOT
+        #only root for the fstab
+        if [ "${pfad}" == "ROOT" ]; then
+          sed "s|__current/${pfad}|__snapshot/${pfad}@`head -n 1 /run/btrfs-root/__current/${pfad}/SNAPSHOT`|g;" /etc/fstab.example > /etc/fstab
+          rootsnapshot="y"
+        fi
+
+        mkdir -p /run/btrfs-root/__snapshot/${pfad%/*}
+        btrfs subvolume snapshot /run/btrfs-root/__current/${pfad} /run/btrfs-root/__snapshot/${pfad}@`head -n 1 /run/btrfs-root/__current/${pfad}/SNAPSHOT`
+        #btrfs subvolume snapshot -r /run/btrfs-root/__current/${pfad} /run/btrfs-root/__snapshot/${pfad}@`head -n 1 /run/btrfs-root/__current/${pfad}/SNAPSHOT`
+
+        if ! [ "${pfad}" == "ROOT" ]; then
+          rm /run/btrfs-root/__current/${pfad}/SNAPSHOT
+        fi
 
         shift
 
     done
 
+    #reset-fstab
+    if [ "${rootsnapshot}" == "y" ]; then
+        cp /etc/fstab.example /etc/fstab
+    fi
+
+    #stable-snapshot-boot
+    if [ -f "/boot/arch-uefi.conf.example" ]; then
+
+        cp /boot/initramfs-*.img /boot/initramfs-linux-stable.img
+        cp /boot/vmlinuz /boot/vmlinuz-stable
+
+        kernel1="$(echo $(find /boot/ -name "initramfs*-stable.img") | cut -d" " -f2)"
+        linuz1="$(find /boot/ -name "vmlinuz*-stable")"
+        kernel="${kernel1#/*/}"
+        linuz="${linuz1#/*/}"
+
+sed "s|%LINUZ%|${linuz}|g;
+s|%KERNEL%|${kernel}|g;
+s|rootflags=subvol=__current/ROOT|rootflags=subvol=__snapshot/${pfad}@`head -n 1 /run/btrfs-root/__current/${pfad}/SNAPSHOT`" /boot/arch-uefi.conf.example > /boot/loader/entries/arch-uefi-stable.conf
+
+        if [ -f /run/btrfs-root/__current/ROOT/SNAPSHOT ]; then
+          rm /run/btrfs-root/__current/ROOT/SNAPSHOT
+        fi
+
+
+    fi
+
 elif [ "restore" == "$1" ]; then
 
     while (( "$(expr $# - 1)" ))