__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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# Restore the remote backup via RSYNC
get_size() {
echo $( stat --format '%s' "$TARGET_FS_ROOT/$1" )
}
local backup_prog_rc
local restore_log_message
local host path
host="$(rsync_host "$BACKUP_URL")"
path="$(rsync_path "$BACKUP_URL")"
LogPrint "Restoring $BACKUP_PROG backup from '${host}:${path}'"
ProgressStart "Restore operation"
(
case "$(basename $BACKUP_PROG)" in
(rsync)
case $(rsync_proto "$BACKUP_URL") in
(ssh)
Log $BACKUP_PROG "${BACKUP_RSYNC_OPTIONS[@]}" "$(rsync_remote_full "$BACKUP_URL")/backup"/ $TARGET_FS_ROOT/
$BACKUP_PROG "${BACKUP_RSYNC_OPTIONS[@]}" \
"$(rsync_remote_full "$BACKUP_URL")/backup"/ \
$TARGET_FS_ROOT/
;;
(rsync)
$BACKUP_PROG "${BACKUP_RSYNC_OPTIONS[@]}" \
"$(rsync_remote_full "$BACKUP_URL")/backup"/ $TARGET_FS_ROOT/
;;
esac
;;
(*)
# no other backup programs foreseen than rsync so far
:
;;
esac
echo $? >$TMP_DIR/retval
) >"${TMP_DIR}/${BACKUP_PROG_ARCHIVE}-restore.log" &
BackupPID=$!
starttime=$SECONDS
sleep 3 # Give the backup software a good chance to start working
# make sure that we don't fall for an old size info
unset size
# while the restore runs in a sub-process, display some progress information to the user
test "$PROGRESS_WAIT_SECONDS" || PROGRESS_WAIT_SECONDS=1
case "$(basename $BACKUP_PROG)" in
(rsync)
while sleep $PROGRESS_WAIT_SECONDS ; kill -0 $BackupPID 2>/dev/null ; do
fsize=$(get_size "$(tail -2 "${TMP_DIR}/${BACKUP_PROG_ARCHIVE}-restore.log" | head -n 1)")
size=$((size+fsize))
ProgressInfo "Restored $((size/1024/1024)) MiB [avg $((size/1024/(SECONDS-starttime))) KiB/sec]"
done
;;
(*)
ProgressInfo "Restoring"
while sleep $PROGRESS_WAIT_SECONDS ; kill -0 $BackupPID 2>/dev/null ; do
ProgressStep
done
;;
esac
ProgressStop
transfertime="$((SECONDS-starttime))"
# harvest return code from background job. The kill -0 $BackupPID loop above should
# have made sure that this wait won't do any real "waiting" :-)
wait $BackupPID || LogPrintError "Restore job returned a nonzero exit code $?"
# harvest the actual return code of rsync. Finishing the pipeline with an error code above is actually unlikely,
# because rsync is not the last command in it. But error returns from rsync are common and must be handled.
backup_prog_rc="$(cat $TMP_DIR/retval)"
sleep 1
if test "$backup_prog_rc" -gt 0 ; then
# TODO: Shouldn't we tell the user to check ${TMP_DIR}/${BACKUP_PROG_ARCHIVE}-restore.log as well?
LogPrintError "WARNING !
There was an error (${rsync_err_msg[$backup_prog_rc]}) while restoring the backup.
Please check '$RUNTIME_LOGFILE' for more information. You should also
manually check the restored system to see whether it is complete.
"
is_true "$BACKUP_INTEGRITY_CHECK" && Error "Integrity check failed, restore aborted because BACKUP_INTEGRITY_CHECK is enabled"
fi
restore_log_message="$(tail -14 ${TMP_DIR}/${BACKUP_PROG_ARCHIVE}-restore.log)"
if [ $backup_prog_rc -eq 0 -a "$restore_log_message" ] ; then
LogPrint "$restore_log_message in $transfertime seconds."
elif [ "$size" ]; then
LogPrint "Restored $((size/1024/1024)) MiB in $((transfertime)) seconds [avg $((size/1024/transfertime)) KiB/sec]"
fi
return $backup_prog_rc