diff --git a/backup b/backup index b257d52..47d8fe2 100755 --- a/backup +++ b/backup @@ -46,18 +46,19 @@ for x in $UUIDS; do i=$(($i+1)) done total_mounted=$i -echo "Selected a mounted BTRFS device to backup to:" +echo "Selected a mounted BTRFS device to backup to." while [[ $disk < 0 || $disk > $i ]]; do for x in ${!TARGETS_ARRAY[@]}; do echo -e "$(($x+1))) ${UUIDS_ARRAY[$x]}\t(${TARGETS_ARRAY[$x]})" done echo "0) Exit" - read -p "Select one: " disk + read -p "Enter a number: " disk done if [[ $disk == 0 ]]; then exit 0 fi selected_uuid="${UUIDS_ARRAY[$(($disk-1))]}" +selected_mnt="${TARGETS_ARRAY[$(($disk-1))]}" echo "You selected the disk with UUID $selected_uuid." if [[ -f /etc/conf.d/snapper ]]; then @@ -69,72 +70,57 @@ fi for x in $SNAPPER_CONFIGS; do - # shellcheck source=/dev/null source /etc/snapper/configs/$x + echo "At '$x' configuration" old_number=$(snapper -c "$x" list -t single | awk '/'"$selected_uuid"'/ {print $1}') + old_snapshot=$SUBVOLUME/.snapshots/$old_number/snapshot + + if [[ -z "$old_number" ]]; then + echo "No backups have been performed for '$x' on this disk." + read -p "Enter name of directory to store backups: " mybackupdir + echo "This will be the initial backup for snapper configuration '$x' to this disk. This could take awhile." + BACKUPDIR="$selected_mnt/$mybackupdir" + mkdir -p $BACKUPDIR + else + mybackupdir=$(snapper -c root list -t single | awk -F"|" '/'$selected_uuid'/ {print $5}' | awk -F "," '{print $1}' | awk -F"=" '{print $2}') + BACKUPDIR="$selected_mnt/$mybackupdir" + if [[ ! -d $BACKUPDIR ]]; then + echo "ERROR: $BACKUPDIR is not a directory on $selected_uuid." + exit 1 + fi + fi + new_number=$(snapper -c "$x" create --print-number) - sync - new_snapshot=$SUBVOLUME/.snapshots/$new_number/snapshot new_info=$SUBVOLUME/.snapshots/$new_number/info.xml - echo "At '$x' configuration" + sync + backup_location=$BACKUPDIR/$x/$new_number/ + echo "Backup location: $backup_location" + + read -n 1 -p "Continue (y/n)? " cont_backup + echo + if [[ "$cont_backup" != "y" ]]; then + continue + fi + + mkdir -p "$backup_location" + if [[ -z "$old_number" ]]; then - echo "No backups have been performed for '$x' on this disk." - read -p "Enter name of directory to store backups: " mybackupdir - - BACKUPDIR="$(findmnt -n -v -t btrfs -o UUID,TARGET --list | awk '/'$selected_uuid'/ {print $2}')/$mybackupdir" - backup_location=$BACKUPDIR/$x/$new_number/ - echo "This will be the initial backup for snapper configuration '$x' to this disk. This could take awhile." - echo "Backup location: $backup_location" - read -n 1 -p "Continue (y/n)? " cont_backup - echo - if [[ "$cont_backup" != "y" ]]; then - continue - fi - mkdir -p "$backup_location" btrfs send "$new_snapshot" | btrfs receive "$backup_location" else - mybackupdir=$(snapper -c root list -t single | awk -F"|" '/'$selected_uuid'/ {print $5}' | awk -F "," '{print $1}' | awk -F"=" '{print $2}') - BACKUPDIR="$(findmnt -n -v -t btrfs -o UUID,TARGET --list | awk '/'$selected_uuid'/ {print $2}')/$mybackupdir" - - if [[ ! -d $BACKUPDIR ]]; then - echo "ERROR: $BACKUPDIR is not a directory." - exit 1 - fi - - backup_location=$BACKUPDIR/$x/$new_number/ - - echo "Backup location: $backup_location" - if [[ -d "$backup_location" ]]; then - echo "ERROR: Backup location already exists." - break - fi - - read -n 1 -p "Continue (y/n)? " cont_backup - echo - if [[ "$cont_backup" != "y" ]]; then - continue - fi - mkdir -p "$backup_location" - - old_snapshot=$SUBVOLUME/.snapshots/$old_number/snapshot - - # Sends the difference between the new snapshot and old snapshot to - # the backup location. Using the -c flag instead of -p tells it that - # there is an identical subvolume to the old snapshot at the - # receiving location where it can get its data. This helps speed up - # the transfer. + # Sends the difference between the new snapshot and old snapshot to the + # backup location. Using the -c flag instead of -p tells it that there + # is an identical subvolume to the old snapshot at the receiving + # location where it can get its data. This helps speed up the transfer. btrfs send "$new_snapshot" -c "$old_snapshot" | btrfs receive "$backup_location" &>/dev/null - cp "$new_info" "$backup_location" snapper -c "$x" delete "$old_number" - fi userdata="backupdir=$mybackupdir, uuid=$selected_uuid"