backup

#!/bin/zsh
# Sichern aller aufgelisteten Rechner auf ein angestecktes Laufwerk

# your mountpoint for backsnap
BS_MOUNT=/mnt/BackSnap
# start of the uuid of your backup partition
BS_ID=03417033
# activate ssh-askpass for gui usage
export SSH_ASKPASS_REQUIRE="prefer"

# search for the backup device:
BS_UUID=$(lsblk -o uuid | grep -E $BS_ID)
# echo "UUID=$BS_UUID LEN=${#BS_UUID}"
[ ${#BS_UUID} -le 35 ] && 
    echo "error: backup disk with UUID $BS_ID... is not connected" && exit

# mount backup device:
WAS_MOUNTED=$(mount | grep -E " $BS_MOUNT ")
# echo "was mounted=$WAS_MOUNTED"
[ ${#WAS_MOUNTED} -le 10 ] && 
    echo "i need to mount $BS_UUID to $BS_MOUNT" && 
    mount -t btrfs -o subvol=@BackSnap,compress=zstd:9 /dev/disk/by-uuid/$BS_UUID $BS_MOUNT
mount | grep -E " $BS_MOUNT " ||
    { echo "error: could not mount $BS_UUID to $BS_MOUNT" && exit }

function backup {
# This script needs to run in a terminal with sudo to get the grapical version !
    backsnap -gtc -v=1 -a=12 $1 $BS_MOUNT/$2 || exit
# alternative cli-version is called:    
#   backsnap -tc -v=3 $1 $BS_MOUNT/$2 || exit    
    echo  "OK"
}

# lokal sichern
backup /     manjaro18
backup /home manjaro18.home

# server sichern
backup root@server:/ server
backup root@server:/home server.home
backup root@server:/srv server.srv

# jitsi sichern
backup root@jitsim1:/ jitsim1
backup root@jitsim1:/home jitsim1.home
backup root@jitsim1:/opt/hst jitsim1.hst
backup root@jitsim1:/opt/hugo jitsim1.hugo

# laptop sichern 
backup root@notebook: notebook
backup root@notebook:/home notebook.home

# gast sichern
backup root@gast:/ gast
backup root@gast:/home gast.home

# timeshift sichern
backup root@timeshift:/ timeshift
backup root@timeshift:/home timeshift.home

# timeshift sichern mit Fehlermeldung weil Parameter 2 fehlt
# backup root@timeshift:/ 
# backup root@timeshift:/home 

# Laufwerk unmounten:
sync
[ ${#WAS_MOUNTED} -le 10 ] && 
    echo "i need to umount $BS_MOUNT" && 
    umount $BS_MOUNT &&
    sync
mount | grep -E " $BS_MOUNT "
echo "fertig mit den Backups"