snap-sync: restructure function block
- new function get_disk_info() - new function run_config() - new function run_backup() - new function get_target_disk() - apply them to be in lexical order Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>
This commit is contained in:
338
bin/snap-sync
338
bin/snap-sync
@@ -70,6 +70,38 @@ error() {
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notify_error 'Error' 'Check journal for more information.'
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notify_error 'Error' 'Check journal for more information.'
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} >&2
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} >&2
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get_disk_infos () {
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if [[ "$(findmnt -n -v --target / -o FSTYPE)" == "btrfs" ]]; then
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EXCLUDE_UUID=$(findmnt -n -v -t btrfs --target / -o UUID)
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TARGETS=$($ssh findmnt -n -v -t btrfs -o UUID,TARGET --list | grep -v $EXCLUDE_UUID | awk '{print $2}')
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UUIDS=$($ssh findmnt -n -v -t btrfs -o UUID,TARGET --list | grep -v $EXCLUDE_UUID | awk '{print $1}')
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else
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TARGETS=$($ssh findmnt -n -v -t btrfs -o TARGET --list)
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UUIDS=$($ssh findmnt -n -v -t btrfs -o UUID --list)
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fi
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declare -a TARGETS_ARRAY
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declare -a UUIDS_ARRAY
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i=0
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disk=-1
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disk_count=0
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for x in $UUIDS; do
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UUIDS_ARRAY[$i]=$x
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if [[ "$x" == "$uuid_cmdline" ]]; then
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disk=$i
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disk_count=$(($disk_count+1))
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fi
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i=$((i+1))
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done
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i=0
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for x in $TARGETS; do
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TARGETS_ARRAY[$i]=$x
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i=$((i+1))
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done
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}
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notify() {
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notify() {
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for u in $(users | sed 's/ /\n/' | sort -u); do
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for u in $(users | sed 's/ /\n/' | sort -u); do
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sudo -u $u DISPLAY=:0 \
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sudo -u $u DISPLAY=:0 \
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@@ -169,158 +201,22 @@ parse_params () {
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fi
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fi
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}
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}
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traperror() {
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run_config () {
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printf "Exited due to error on line %s.\n" $1
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declare -a BACKUPDIRS_ARRAY
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printf "exit status: %s\n" "$2"
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declare -a MYBACKUPDIR_ARRAY
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printf "command: %s\n" "$3"
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declare -a OLD_NUM_ARRAY
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printf "bash line: %s\n" "$4"
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declare -a OLD_SNAP_ARRAY
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printf "function progname: %s\n" "$5"
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declare -a NEW_NUM_ARRAY
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exit 1
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declare -a NEW_SNAP_ARRAY
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}
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declare -a NEW_INFO_ARRAY
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declare -a BACKUPLOC_ARRAY
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declare -a CONT_BACKUP_ARRAY
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trapkill() {
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printf "\nInitial configuration...\n" | tee $PIPE
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die "Exited due to user intervention."
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}
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usage() {
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# Initial configuration of where backup directories are
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cat <<EOF
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i=0
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$progname $version
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for x in $selected_configs; do
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Usage: $progname [options]
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Options:
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-d, --description <desc> Change the snapper description. Default: "latest incremental backup"
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-c, --config <config> Specify the snapper configuration to use. Otherwise will perform for each snapper
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configuration. Can list multiple configurations within quotes, space-separated
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(e.g. -c "root home").
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-n, --noconfirm Do not ask for confirmation for each configuration. Will still prompt for backup
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directory name on first backup"
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-u, --UUID <UUID> Specify the UUID of the mounted BTRFS subvolume to back up to. Otherwise will prompt."
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If multiple mount points are found with the same UUID, will prompt user."
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--remote <address> Send the snapshot backup to a remote machine. The snapshot will be sent via ssh. You
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should specify the remote machine's hostname or ip address. The 'root' user must be
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permitted to login on the remote machine.
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-v, --verbose Be more verbose on what's going on.
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EOF
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}
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###
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# Main
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###
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trap 'traperror ${LINENO} $? "$BASH_COMMAND" $BASH_LINENO "${FUNCPROGNAME[@]}"' ERR
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trap trapkill SIGTERM SIGINT
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cwd=`pwd`
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ssh=""
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parse_params $@
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check_prerequisites
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if [[ "$uuid_cmdline" != "none" ]]; then
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if [[ -z $ssh ]]; then
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notify_info "Backup started" "Starting backups to $uuid_cmdline..."
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else
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notify_info "Backup started" "Starting backups to $uuid_cmdline at $remote..."
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fi
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else
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if [[ -z $ssh ]]; then
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notify_info "Backup started" "Starting backups. Use command line menu to select disk."
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else
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notify_info "Backup started" "Starting backups. Use command line menu to select disk on $remote."
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fi
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fi
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if [[ "$(findmnt -n -v --target / -o FSTYPE)" == "btrfs" ]]; then
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EXCLUDE_UUID=$(findmnt -n -v -t btrfs --target / -o UUID)
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TARGETS=$($ssh findmnt -n -v -t btrfs -o UUID,TARGET --list | grep -v $EXCLUDE_UUID | awk '{print $2}')
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UUIDS=$($ssh findmnt -n -v -t btrfs -o UUID,TARGET --list | grep -v $EXCLUDE_UUID | awk '{print $1}')
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else
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TARGETS=$($ssh findmnt -n -v -t btrfs -o TARGET --list)
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UUIDS=$($ssh findmnt -n -v -t btrfs -o UUID --list)
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fi
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declare -a TARGETS_ARRAY
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declare -a UUIDS_ARRAY
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i=0
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disk=-1
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disk_count=0
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for x in $UUIDS; do
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UUIDS_ARRAY[$i]=$x
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if [[ "$x" == "$uuid_cmdline" ]]; then
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disk=$i
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disk_count=$(($disk_count+1))
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fi
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i=$((i+1))
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done
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i=0
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for x in $TARGETS; do
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TARGETS_ARRAY[$i]=$x
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i=$((i+1))
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done
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if [[ "${#UUIDS_ARRAY[$@]}" -eq 0 ]]; then
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die "No external btrfs subvolumes found to backup to."
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fi
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if [[ "$disk_count" > 1 ]]; then
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printf "Multiple mount points were found with UUID %s.\n" "$uuid_cmdline"
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disk="-1"
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fi
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if [[ "$disk" == -1 ]]; then
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if [[ "$disk_count" == 0 && "$uuid_cmdline" != "none" ]]; then
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error "A device with UUID $uuid_cmdline was not found to be mounted, or it is not a BTRFS device."
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fi
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if [[ -z $ssh ]]; then
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printf "Select a mounted BTRFS device on your local machine to backup to.\n"
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else
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printf "Select a mounted BTRFS device on %s to backup to.\n" "$remote"
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fi
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while [[ $disk -lt 0 || $disk -gt $i ]]; do
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for x in "${!TARGETS_ARRAY[@]}"; do
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printf "%4s) %s (%s)\n" "$((x+1))" "${UUIDS_ARRAY[$x]}" "${TARGETS_ARRAY[$x]}"
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done
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printf "%4s) Exit\n" "0"
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read -r -p "Enter a number: " disk
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if ! [[ $disk == ?(-)+([0-9]) ]]; then
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printf "\nNo disk selected. Select a disk to continue.\n"
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disk=-1
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fi
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done
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if [[ $disk == 0 ]]; then
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exit 0
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fi
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disk=$(($disk-1))
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fi
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selected_uuid="${UUIDS_ARRAY[$((disk))]}"
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selected_mnt="${TARGETS_ARRAY[$((disk))]}"
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printf "\nYou selected the disk with UUID %s.\n" "$selected_uuid" | tee $PIPE
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if [[ -z $ssh ]]; then
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printf "The disk is mounted at %s.\n" "$selected_mnt" | tee $PIPE
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else
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printf "The disk is mounted at %s:%s.\n" "$remote" "$selected_mnt" | tee $PIPE
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fi
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declare -a BACKUPDIRS_ARRAY
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declare -a MYBACKUPDIR_ARRAY
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declare -a OLD_NUM_ARRAY
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declare -a OLD_SNAP_ARRAY
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declare -a NEW_NUM_ARRAY
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declare -a NEW_SNAP_ARRAY
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declare -a NEW_INFO_ARRAY
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declare -a BACKUPLOC_ARRAY
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declare -a CONT_BACKUP_ARRAY
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printf "\nInitial configuration...\n" | tee $PIPE
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# Initial configuration of where backup directories are
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i=0
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for x in $selected_configs; do
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if [[ "$(snapper -c $x list -t single | awk '/'"$selected_uuid"'/ {cnt++} END {print cnt}')" -gt 1 ]]; then
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if [[ "$(snapper -c $x list -t single | awk '/'"$selected_uuid"'/ {cnt++} END {print cnt}')" -gt 1 ]]; then
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error "More than one snapper entry found with UUID $selected_uuid for configuration $x. Skipping configuration $x."
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error "More than one snapper entry found with UUID $selected_uuid for configuration $x. Skipping configuration $x."
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@@ -367,7 +263,7 @@ for x in $selected_configs; do
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if [[ -z "$old_num" ]]; then
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if [[ -z "$old_num" ]]; then
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printf "No backups have been performed for '%s' on this disk.\n" "$x"
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printf "No backups have been performed for '%s' on this disk.\n" "$x"
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read -r -p "Enter name of directory to store backups, relative to $selected_mnt (to be created if not existing): " mybackupdir
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read -r -p "Enter progname of directory to store backups, relative to $selected_mnt (to be created if not existing): " mybackupdir
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printf "This will be the initial backup for snapper configuration '%s' to this disk. This could take awhile.\n" "$x"
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printf "This will be the initial backup for snapper configuration '%s' to this disk. This could take awhile.\n" "$x"
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BACKUPDIR="$selected_mnt/$mybackupdir"
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BACKUPDIR="$selected_mnt/$mybackupdir"
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$ssh mkdir -p -m700 "$BACKUPDIR"
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$ssh mkdir -p -m700 "$BACKUPDIR"
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@@ -421,12 +317,14 @@ for x in $selected_configs; do
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i=$(($i+1))
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i=$(($i+1))
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done
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done
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}
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# Actual backing up
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run_backup () {
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printf "\nPerforming backups...\n" | tee $PIPE
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# Actual backing up
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i=-1
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printf "\nPerforming backups...\n" | tee $PIPE
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for x in $selected_configs; do
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i=-1
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for x in $selected_configs; do
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i=$(($i+1))
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i=$(($i+1))
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@@ -492,10 +390,132 @@ for x in $selected_configs; do
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printf "Backup complete for configuration %s.\n" "$x" > $PIPE
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printf "Backup complete for configuration %s.\n" "$x" > $PIPE
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done
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done
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printf "\nDone!\n" | tee $PIPE
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printf "\nDone!\n" | tee $PIPE
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exec 3>&-
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exec 3>&-
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}
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select_target_disk () {
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if [[ "${#UUIDS_ARRAY[$@]}" -eq 0 ]]; then
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die "No external btrfs subvolumes found to backup to."
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fi
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if [[ "$disk_count" > 1 ]]; then
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printf "Multiple mount points were found with UUID %s.\n" "$uuid_cmdline"
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disk="-1"
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fi
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if [[ "$disk" == -1 ]]; then
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if [[ "$disk_count" == 0 && "$uuid_cmdline" != "none" ]]; then
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error "A device with UUID $uuid_cmdline was not found to be mounted, or it is not a BTRFS device."
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fi
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if [[ -z $ssh ]]; then
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printf "Select a mounted BTRFS device on your local machine to backup to.\n"
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else
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printf "Select a mounted BTRFS device on %s to backup to.\n" "$remote"
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fi
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while [[ $disk -lt 0 || $disk -gt $i ]]; do
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for x in "${!TARGETS_ARRAY[@]}"; do
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printf "%4s) %s (%s)\n" "$((x+1))" "${UUIDS_ARRAY[$x]}" "${TARGETS_ARRAY[$x]}"
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done
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printf "%4s) Exit\n" "0"
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read -r -p "Enter a number: " disk
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if ! [[ $disk == ?(-)+([0-9]) ]]; then
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printf "\nNo disk selected. Select a disk to continue.\n"
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disk=-1
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fi
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done
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if [[ $disk == 0 ]]; then
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exit 0
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fi
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disk=$(($disk-1))
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fi
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}
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traperror() {
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printf "Exited due to error on line %s.\n" $1
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printf "exit status: %s\n" "$2"
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||||||
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printf "command: %s\n" "$3"
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printf "bash line: %s\n" "$4"
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printf "function progname: %s\n" "$5"
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exit 1
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|
}
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trapkill() {
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die "Exited due to user intervention."
|
||||||
|
}
|
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|
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|
usage() {
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||||||
|
cat <<EOF
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||||||
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$progname $version
|
||||||
|
Usage: $progname [options]
|
||||||
|
|
||||||
|
Options:
|
||||||
|
-d, --description <desc> Change the snapper description. Default: "latest incremental backup"
|
||||||
|
-c, --config <config> Specify the snapper configuration to use. Otherwise will perform for each snapper
|
||||||
|
configuration. Can list multiple configurations within quotes, space-separated
|
||||||
|
(e.g. -c "root home").
|
||||||
|
-n, --noconfirm Do not ask for confirmation for each configuration. Will still prompt for backup
|
||||||
|
directory name on first backup"
|
||||||
|
-u, --UUID <UUID> Specify the UUID of the mounted BTRFS subvolume to back up to. Otherwise will prompt."
|
||||||
|
If multiple mount points are found with the same UUID, will prompt user."
|
||||||
|
--remote <address> Send the snapshot backup to a remote machine. The snapshot will be sent via ssh. You
|
||||||
|
should specify the remote machine's hostname or ip address. The 'root' user must be
|
||||||
|
permitted to login on the remote machine.
|
||||||
|
-v, --verbose Be more verbose on what's going on.
|
||||||
|
|
||||||
|
EOF
|
||||||
|
}
|
||||||
|
|
||||||
|
###
|
||||||
|
# Main
|
||||||
|
###
|
||||||
|
|
||||||
|
trap 'traperror ${LINENO} $? "$BASH_COMMAND" $BASH_LINENO "${FUNCPROGNAME[@]}"' ERR
|
||||||
|
trap trapkill SIGTERM SIGINT
|
||||||
|
|
||||||
|
cwd=`pwd`
|
||||||
|
ssh=""
|
||||||
|
|
||||||
|
parse_params $@
|
||||||
|
|
||||||
|
check_prerequisites
|
||||||
|
|
||||||
|
if [[ "$uuid_cmdline" != "none" ]]; then
|
||||||
|
if [[ -z $ssh ]]; then
|
||||||
|
notify_info "Backup started" "Starting backups to $uuid_cmdline..."
|
||||||
|
else
|
||||||
|
notify_info "Backup started" "Starting backups to $uuid_cmdline at $remote..."
|
||||||
|
fi
|
||||||
|
else
|
||||||
|
if [[ -z $ssh ]]; then
|
||||||
|
notify_info "Backup started" "Starting backups. Use command line menu to select disk."
|
||||||
|
else
|
||||||
|
notify_info "Backup started" "Starting backups. Use command line menu to select disk on $remote."
|
||||||
|
fi
|
||||||
|
fi
|
||||||
|
|
||||||
|
# read mounted BTRFS structures
|
||||||
|
get_disk_infos
|
||||||
|
|
||||||
|
# select the target BTRFS subvol
|
||||||
|
select_target_disk
|
||||||
|
|
||||||
|
selected_uuid="${UUIDS_ARRAY[$((disk))]}"
|
||||||
|
selected_mnt="${TARGETS_ARRAY[$((disk))]}"
|
||||||
|
printf "\nYou selected the disk with UUID %s.\n" "$selected_uuid" | tee $PIPE
|
||||||
|
if [[ -z $ssh ]]; then
|
||||||
|
printf "The disk is mounted at %s.\n" "$selected_mnt" | tee $PIPE
|
||||||
|
else
|
||||||
|
printf "The disk is mounted at %s:%s.\n" "$remote" "$selected_mnt" | tee $PIPE
|
||||||
|
fi
|
||||||
|
|
||||||
|
# create and initialize structures for snapper configs
|
||||||
|
run_config
|
||||||
|
|
||||||
|
# run backups using btrfs-send -> btrfs-receive
|
||||||
|
run_backup
|
||||||
|
|
||||||
if [[ "$uuid_cmdline" != "none" ]]; then
|
if [[ "$uuid_cmdline" != "none" ]]; then
|
||||||
notify_info "Finished" "Backups to $uuid_cmdline complete!"
|
notify_info "Finished" "Backups to $uuid_cmdline complete!"
|
||||||
|
|||||||
Reference in New Issue
Block a user