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btrfs-snapshotboot

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simono41 2018-06-21 06:56:45 +02:00
parent b4d440011e
commit 7a05467616
2 changed files with 43 additions and 3 deletions
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3
arch-install
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@ -472,6 +472,9 @@ function installation {
fi
#forbtrfssnapshots
cp ${mountpoint}/etc/fstab ${mountpoint}/etc/fstab.example

41
snapshot.sh
View file

@ -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/${pfad}/SNAPSHOT`
#only root for the fstab
if [ "${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)" ))