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10 Commits

Author SHA1 Message Date
3111605ce1 fix question 2021-01-24 19:19:08 +03:00
4a08cb45d4 fix chroot+fix question encrypted 2021-01-24 18:52:30 +03:00
31649a6948 i'm too stupid for bash... 2021-01-24 17:56:08 +03:00
55514aca5b fix error, fix msgs 2021-01-24 14:03:29 +03:00
b571133f3f fix swap selector 2021-01-24 13:47:29 +03:00
70b0087b89 backup selector changed 2021-01-24 13:45:30 +03:00
3d8327112d fix "encrypted" question 2021-01-24 13:41:30 +03:00
fb856ac8d5 changed location 2021-01-24 11:49:44 +03:00
9d369e8b0d readme 2021-01-14 12:55:00 +03:00
a248b3721b fix syntax error at "get swap size" 2021-01-14 12:53:10 +03:00
2 changed files with 158 additions and 196 deletions

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@ -1,8 +1,4 @@
# This is...
# Что это?
Script that can install OS from previously rsynced backup on NAS
Это скрипт, который восстанавливает систему из бекапа, расположенного на rsync сервере, оптимизирован под ArchLinux
# TODO
* some checks
* config file support

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@ -1,4 +1,3 @@
#!/bin/bash
#not working encrypted setup
#vars
@ -6,221 +5,188 @@ IP="192.168.100.100"
source="rsync@"$IP"/mnt/"
bootSize=256M
#prepare
##check for root
testVars() {
if [ `id -u` != 0 ] ; then
echo "==> Need to be root"
exit 1
fi
##check for network
ping -c 1 $IP &> /dev/null
if [ "$?" != 0 ]
then
echo "==> Host unavailable, exiting"
if [ `id -u` != 0 ] ; then
echo "==> Need to be root"
exit 1
fi
##check for network
ping -c 1 $IP &> /dev/null
if [ "$?" != 0 ]
then
echo "==> Host unavailable, exiting"
exit 1
fi
##check for space
rsync_dir_list=($(rsync --password-file=rsync_pass rsync://$source | awk '{print $5}' | grep -v .DS_Store | grep -v "@Recently-Snapshot" | sort -r | head -n -1))
##choose backup
echo "==>" ${#rsync_dir_list[@]} backups: ${rsync_dir_list[@]}
read -p "Input backup name:" backupName
echo "Selected: " $backupName
#until [ $backupNum -le ${#rsync_dir_list[@]} ]
#do
#read -p "Input backup name:" backupName
#done
#let "backupNum -= 1"
##set target drive
lsblk -o NAME,LABEL,FSTYPE,SIZE,MOUNTPOINT,MODEL
until [ ! -f $targetDrive ]
do
read -p "Target drive is " targetDrive
targetDrive=/dev/$targetDrive
done
#encrypted?
echo "Encrypted? (Y/N)"
while read -r -n 1 answer ; do
if [[ $answer = [YyNn] ]]; then
[[ $answer = [Yy] ]] && encryptedDevice=true && echo "WARNING You will be asked for password later" #read -p "Password: " encryptedPassword
[[ $answer = [Nn] ]] && encryptedDevice=false
break
fi
}
done
chooseBackup() {
##get list of backups
rsync_dir_list=($(rsync --password-file=rsync_pass rsync://$source | awk '{print $5}' | grep -v .DS_Store | grep -v "@Recently-Snapshot" | sort -r | head -n -1))
#get swap size
swapSize=$(free -m | grep "Mem" | awk '{print $2}')
echo ""
read -p "Enter extra amount of swap (empty == 512):" swapExtra
[[ -z "$swapExtra" ]] && swapExtra=512
let "swapSize += swapExtra" #add 512 mbs to swap for swap, not only hibernation
swapSize=$swapSize"M"
##choose backup
echo "==>" ${#rsync_dir_list[@]} backups: ${rsync_dir_list[@]}
read -p "Input backup number:" backupNum
until [ $backupNum -le ${#rsync_dir_list[@]} ]
do
read -p "Input backup number:" backupNum
done
let "backupNum -= 1"
}
setTargetDisk() {
##set target drive
lsblk -o NAME,LABEL,FSTYPE,SIZE,MOUNTPOINT,MODEL
until [ ! -f $targetDrive ]
do
read -p "Target drive is " targetDrive
targetDrive=/dev/$targetDrive
done
echo "Encrypted?"
while read -r -n 1 -s answer ; do
if [[ $answer = [YyNn] ]]; then
[[ $answer = [Yy] ]] && encryptedDevice=true && echo "WARNING You will be asked for password later" #read -p "Password: " encryptedPassword
[[ $answer = [Nn] ]] && encryptedDevice=false
break
fi
done
#get swap size
swapSize=$(free -m | grep "Mem" | awk '{print $2}')
read -p "Enter extra amount of swap (empty == 512):" swapExtra
if [ -z "$swapExtra" ] && swapExtra=512
let "swapSize += swapExtra" #add 512 mbs to swap for swap, not only hibernation
swapSize=$swapSize"M"
}
#DEPLOY
warnDeploy() {
echo deployin\' ${rsync_dir_list[$backupNum]} on $targetDrive in 15s...
sleep 15
trap 'echo "==> Interrupted by user"; exit 1' 2
}
echo deployin\' ${rsync_dir_list[$backupNum]} on $targetDrive in 15s...
partitionDisk() {
##clear mbr for sure
dd if=/dev/zero of=$targetDrive count=512
sleep 15
##fdisk
echo "==> Partitioning..."
(
echo o # Create a new empty DOS partition table
echo n # Add a new partition
echo # Primary partition
echo # Partition number
echo # First sector (Accept default: 1)
echo +$swapSize # Last sector (Accept default: varies)
echo y #remove sign
echo n
echo
echo
echo
echo +$bootSize
echo y
echo n
echo
echo
echo
echo
echo w
) | fdisk $targetDrive
# IMHO this ^ is less obfuscated way
}
makeFS() {
##mkfs's
echo "==> Making filesystems..."
echo "mkswap"
mkswap $targetDrive"1"
echo "mkfs.vfat"
mkfs.vfat $targetDrive"2"
trap 'echo "==> Interrupted by user"; exit 1' 2
echo "mkfs.ext4"
if $encryptedDevice
then
cryptsetup luksFormat -v $targetDrive"3"
cryptsetup open $targetDrive"3" targetLuks
mkfs.ext4 /dev/mapper/targetLuks
else
mkfs.ext4 $targetDrive"3"
fi
}
##clear mbr for sure
getUUIDs() {
##get disk's uuid
echo "==> Got UUIDs!"
UUIDS=($(blkid $targetDrive"1" $targetDrive"2" $targetDrive"3" -o value -s UUID))
if $encryptedDevice
then
UUIDS[3]=UUIDS[2]
UUIDS[2]=`blkid /dev/mapper/targetLuks -o value -s UUID`
fi
}
dd if=/dev/zero of=$targetDrive count=512
mountDisk() {
##mount disks
echo "==> Mounting..."
if $encryptedDevice
then
mount /dev/mapper/targetLuks /mnt
else
mount $targetDrive"3" /mnt
fi
##fdisk
echo "==> Partitioning..."
(
echo o # Create a new empty DOS partition table
echo n # Add a new partition
echo # Primary partition
echo # Partition number
echo # First sector (Accept default: 1)
echo +$swapSize # Last sector (Accept default: varies)
echo y #remove sign
echo n
echo
echo
echo
echo +$bootSize
echo y
echo n
echo
echo
echo
echo
echo w
) | fdisk $targetDrive
# IMHO this ^ is less obfuscated way
mkdir /mnt/boot
mount $targetDrive"2" /mnt/boot
}
##mkfs's
echo "==> Making filesystems..."
echo "=> swap"
mkswap $targetDrive"1"
echo "=> /boot"
mkfs.vfat $targetDrive"2"
copyFiles() {
##rsync
echo "==> Copying from NAS..."
rsync --archive --password-file=rsync_pass rsync://$source${rsync_dir_list[$backupNum]}/ /mnt/
retVal=$?
if [ $retVal -ne 0 ]; then
exit 1
fi
}
echo "=> rootfs"
if $encryptedDevice ; then
cryptsetup luksFormat -v $targetDrive"3"
cryptsetup open $targetDrive"3" targetLuks
mkfs.ext4 -q /dev/mapper/targetLuks
else
mkfs.ext4 -q $targetDrive"3"
fi
updateFstab() {
##update fstab
echo "==> Updating fstab..."
mv /mnt/etc/fstab /mnt/etc/fstab.orig
cat /mnt/etc/fstab.orig | grep "ext4" | sed 's/UUID=[A-Fa-f0-9-]*/UUID='${UUIDS[2]}'/' > /mnt/etc/fstab
cat /mnt/etc/fstab.orig | grep "vfat" | sed 's/UUID=[A-Fa-f0-9-]*/UUID='${UUIDS[1]}'/' >> /mnt/etc/fstab
cat /mnt/etc/fstab.orig | grep "swap" | sed 's/UUID=[A-Fa-f0-9-]*/UUID='${UUIDS[0]}'/' >> /mnt/etc/fstab
rm /mnt/etc/fstab.orig #TODO OFC we need to check mountpoint, not only type of FS
sleep 15
echo "==> Result:"
cat /mnt/etc/fstab
}
##get disk's uuid
echo "==> Got UUIDs!"
UUIDS=($(blkid $targetDrive"1" $targetDrive"2" $targetDrive"3" -o value -s UUID))
if $encryptedDevice ; then
UUIDS[3]=UUIDS[2]
UUIDS[2]=`blkid /dev/mapper/targetLuks -o value -s UUID`
fi
configBootloader()
{
##update grub linux options
if $encryptedDevice
cat /mnt/etc/default/grub | sed 's/cryptdevice=UUID=[A-Fa-f0-9-]*:cryptroot /cryptdevice=UUID='${UUIDS[3]}':cryptroot/' > /mnt/etc/default/grub
else
cat /mnt/etc/default/grub | sed 's/cryptdevice=UUID=[A-Fa-f0-9-]*:cryptroot //' > /mnt/etc/default/grub
fi
##mount disks
echo "==> Mounting..."
if $encryptedDevice ; then
mount /dev/mapper/targetLuks /mnt
else
mount $targetDrive"3" /mnt
fi
cat /mnt/etc/default/grub | sed 's/resume=UUID=[A-Fa-f0-9-]*/resume=UUID='${UUIDS[0]}'/' > /mnt/etc/default/grub
}
mkdir /mnt/boot
mount $targetDrive"2" /mnt/boot
updateBootloader()
{
##mount system stuff
echo "==> Mounting /dev, /sys, /proc..."
mount /dev /mnt/dev --bind
mount /sys /mnt/sys --bind
mount /proc /mnt/proc --bind
##rsync
echo "==> Copying from NAS..."
#rsync --archive --password-file=rsync_pass rsync://$source${rsync_dir_list[$backupNum]}/ /mnt/
rsync --archive --password-file=rsync_pass rsync://$source$backupName/ /mnt/
retVal=$?
if [ $retVal -ne 0 ]; then
exit 1
fi
##chroot, mkinitcpio and update grub
echo "==> mkinitcpio and update grub..."
##update fstab
echo "==> Updating fstab..."
mv /mnt/etc/fstab /mnt/etc/fstab.orig
cat /mnt/etc/fstab.orig | grep "ext4" | sed 's/UUID=[A-Fa-f0-9-]*/UUID='${UUIDS[2]}'/' > /mnt/etc/fstab
cat /mnt/etc/fstab.orig | grep "vfat" | sed 's/UUID=[A-Fa-f0-9-]*/UUID='${UUIDS[1]}'/' >> /mnt/etc/fstab
cat /mnt/etc/fstab.orig | grep "swap" | sed 's/UUID=[A-Fa-f0-9-]*/UUID='${UUIDS[0]}'/' >> /mnt/etc/fstab
rm /mnt/etc/fstab.orig #TODO OFC we need to check mountpoint, not only type of FS
#cat /mnt/etc/mkinitcpio.conf | sed 's/encrypt //' > /mnt/etc/mkinitcpio.conf #remove cryptdevice, no encrypted fs today :c
echo "==> Result:"
cat /mnt/etc/fstab
##update grub linux options
if $encryptedDevice ; then
cat /mnt/etc/default/grub | sed 's/cryptdevice=UUID=[A-Fa-f0-9-]*:cryptroot /cryptdevice=UUID='${UUIDS[3]}':cryptroot/' > /mnt/etc/default/grub
else
cat /mnt/etc/default/grub | sed 's/cryptdevice=UUID=[A-Fa-f0-9-]*:cryptroot //' > /mnt/etc/default/grub
fi
#chroot env
cat << EOF | chroot /mnt
cat /mnt/etc/default/grub | sed 's/resume=UUID=[A-Fa-f0-9-]*/resume=UUID='${UUIDS[0]}'/' > /mnt/etc/default/grub
##mount system stuff
echo "==> Mounting /dev, /sys, /proc..."
mount /dev /mnt/dev --bind
mount /sys /mnt/sys --bind
mount /proc /mnt/proc --bind
##chroot, mkinitcpio and update grub
echo "==> mkinitcpio and update grub..."
#cat /mnt/etc/mkinitcpio.conf | sed 's/encrypt //' > /mnt/etc/mkinitcpio.conf #remove cryptdevice, no encrypted fs today :c
#chroot env
cat << EOF | chroot /mnt /bin/sh
mkinitcpio -P
grub-mkconfig -o /boot/grub/grub.cfg
grub-install $targetDrive
exit
EOF
}
deinit()
{
#deinit
echo "==> Syncing..."
sync
echo "==> Unmounting..."
umount -R /mnt
echo "==> Done!"
}
# funcions
testVars()
chooseBackup()
setTargetDisk()
warnDeploy()
partitionDisk()
makeFS()
getUUIDs()
mountDisk()
copyFiles()
updateFstab()
configBootloader()
updateBootloader()
deinit()
#deinit
echo "==> Syncing..."
sync
echo "==> Unmounting..."
umount -R /mnt
echo "==> Done!"