This commit is contained in:
James Barnett
2016-09-24 15:14:44 -05:00
parent a9dd8a29ae
commit b26ed560e2

118
backup
View File

@@ -71,81 +71,75 @@ for x in $SNAPPER_CONFIGS; do
# shellcheck source=/dev/null
source /etc/snapper/configs/$x
read -n 1 -p "Perform backup on '$x' configuration (y/n)? " do_backup
echo
if [[ $do_backup == "y" ]]; then
old_number=$(snapper -c "$x" list -t single | awk '/'"$selected_uuid"'/ {print $1}')
new_number=$(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"
old_number=$(snapper -c "$x" list -t single | awk '/'"$selected_uuid"'/ {print $1}')
new_number=$(snapper -c "$x" create --print-number)
sync
new_snapshot=$SUBVOLUME/.snapshots/$new_number/snapshot
new_info=$SUBVOLUME/.snapshots/$new_number/info.xml
if [[ -z "$old_number" ]]; then
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 "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 "Backup location: $backup_location"
read -n 1 -p "Continue (y/n)? " cont_backup
echo
if [[ "$cont_backup" != "y" ]]; then
continue
fi
mkdir -p "$backup_location"
echo "Performing initial backup for snapper configuration '$x'. This could take awhile..."
btrfs send "$new_snapshot" | btrfs receive "$backup_location"
BACKUPDIR="$(findmnt -n -v -t btrfs -o UUID,TARGET --list | awk '/'$selected_uuid'/ {print $2}')/$mybackupdir"
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 "$backup_location"
echo "Performing initial backup for snapper configuration '$x'. This could take awhile..."
btrfs send "$new_snapshot" | btrfs receive "$backup_location"
else
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
mkdir -p "$backup_location"
read -n 1 -p "Continue (y/n)? " cont_backup
echo
if [[ "$cont_backup" != "y" ]]; then
continue
fi
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.
btrfs send "$new_snapshot" -c "$old_snapshot" | btrfs receive "$backup_location" &>/dev/null
cp "$new_info" "$backup_location"
snapper -c "$x" delete "$old_number"
mybackupdir=$(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: $BACKUPDIR is not a directory."
exit 1
fi
userdata="backupdir=$mybackupdir, uuid=$selected_uuid"
backup_location=$BACKUPDIR/$x/$new_number/
# Tag new snapshot as the latest
snapper -v -c "$x" modify -d "$description" -u "$userdata" "$new_number"
echo "Backup location: $backup_location"
if [[ -d "$backup_location" ]]; then
echo "ERROR: Backup location already exists."
break
fi
mkdir -p "$backup_location"
read -n 1 -p "Continue (y/n)? " cont_backup
echo
if [[ "$cont_backup" != "y" ]]; then
continue
fi
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.
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=$selected_uuid"
# Tag new snapshot as the latest
snapper -v -c "$x" modify -d "$description" -u "$userdata" "$new_number"
done