diff options
Diffstat (limited to 'server.sh')
| -rwxr-xr-x | server.sh | 75 |
1 files changed, 66 insertions, 9 deletions
@@ -12,6 +12,12 @@ source "backends/tar.sh" source "backends/bup.sh" source "backends/borg.sh" +function echo_debug() { + if [ $VERBOSE -ne 0 ]; then + echo "$1" + fi +} + function backup_hook_example { bup -d $CUR_BACK_DIR ls -l $BACKUP_NAME/latest/var/minecraft } @@ -111,6 +117,7 @@ function players_online() { } function init_backup() { + # even though bup and borg are smart, they will not create a path for a repo for backup_dir in ${BACKUP_DIRS[*]} do if [[ $backup_dir == *:* ]]; then @@ -131,6 +138,42 @@ function init_backup() { fi } +function same_world() { + delta=$(diff -r "$1" "$2") + if [ -z "$delta" ] ; then + return 0 + fi + return 1 +} + +# checking if latest snapshots are the same as the current world +function test_backup_integrity() { + local retcode=0 + for backup_dir in ${BACKUP_DIRS[*]} + do + local serverdir="$PWD" + local tmpdir=$(mktemp -d); + + # restore most recent backup to a temporary dir + if ! server_restore "$serverdir/$backup_dir" 0 "$tmpdir" ; then + echo "Failed to get latest snapshot from \"$backup_dir\"" + retcode=1 + elif ! same_world "$WORLD_NAME" "$tmpdir/$WORLD_NAME" ; then + echo "Latest backup from \"$backup_dir\" differs from current world!" + retcode=1 + fi + + rm -r "$tmpdir" + done + + if [ $retcode -ne 0 ] ; then + echo "Backup integrity check: FAILED" + return 1 + fi + echo "Backup integrity check: OK" + return 0 +} + function create_backup() { init_backup @@ -141,6 +184,8 @@ function create_backup() { else tar_create_backup fi + + test_backup_integrity } function server_backup_safe() { @@ -255,13 +300,13 @@ function is_in() { function server_restore() { local backup_dir local snapshot_index - local dest + local dest="$PWD" + # parameters are only used for testing backups, so thorough checks are not needed if [ $# -ge 2 ]; then backup_dir="$1" snapshot_index=$2 fi - if [ $# -eq 3 ]; then dest="$3" fi @@ -270,6 +315,8 @@ function server_restore() { echo "No backup directories found, abort" return 1 fi + + if [ -z $backup_dir ]; then echo "From where get the snapshot?" backup_dir="$(choose_from "${BACKUP_DIRS[@]}")" @@ -281,6 +328,7 @@ function server_restore() { return 1 fi + local snapshots=$( if [ $BACKUP_BACKEND = "bup" ]; then bup_ls_dir "$backup_dir" @@ -297,6 +345,7 @@ function server_restore() { # convert multiline string to bash array snapshots=($(echo "$snapshots")) + local snapshot if [ -z $snapshot_index ]; then echo "Select which snapshot to restore" @@ -309,29 +358,37 @@ function server_restore() { return 1 fi - echo "Restoring snapshot \"$snapshot\" from \"$backup_dir\"" - local oldworld_name="" - if [[ -d "$WORLD_NAME" ]]; then + echo_debug "Restoring snapshot \"$snapshot\" from \"$backup_dir\"" + + + # if we restore to PWD, we will overwrite the current world, which might be harmful + local oldworld_name + if [ "$dest" = "$PWD" ] && [[ -d "$WORLD_NAME" ]]; then echo -n "Preserving old world: " oldworld_name="${WORLD_NAME}.old.$(date +'%F_%H-%M-%S')" mv -v "$PWD/$WORLD_NAME" "$PWD/$oldworld_name" fi + if [ $BACKUP_BACKEND = "bup" ]; then - bup_restore "$backup_dir" "$snapshot" + bup_restore "$backup_dir" "$snapshot" "$dest" elif [ $BACKUP_BACKEND = "borg" ]; then - borg_restore "$backup_dir" "$snapshot" + borg_restore "$backup_dir" "$snapshot" "$dest" else - tar_restore "$backup_dir" "$snapshot" + tar_restore "$backup_dir" "$snapshot" "$dest" fi local status=$? - if [ $status -ne 0 ]; then + + + # if we preseved the current world, but failed to restore the snapshot + if [ ! -z ${oldworld_name+x} ] && [ $status -ne 0 ]; then echo "Failed to restore snapshot, putting old world back where it was:" rm -rv "$PWD/$WORLD_NAME" mv -v "$PWD/$oldworld_name" "$PWD/$WORLD_NAME" return 1 fi + echo "Snapshot restored" return 0 |