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Diffstat (limited to 'scripts/backup.in')
| -rw-r--r-- | scripts/backup.in | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/scripts/backup.in b/scripts/backup.in new file mode 100644 index 0000000..6a50e51 --- /dev/null +++ b/scripts/backup.in @@ -0,0 +1,253 @@ +#! /bin/sh +# This program is part of GNU tar +# Copyright (C) 2004, 2005, 2006 Free Software Foundation +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 1, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +# 02110-1301, USA. + +# Load library routines +SYSCONFDIR=${SYSCONFDIR-@sysconfdir@} +. ${LIBDIR-@libexecdir@}/backup.sh + +DUMP_LEVEL=0 +TIME= +NOW=`now` + +usage() { + cat - <<EOF +usage: $PROGNAME [OPTIONS] [WHEN] +Options are: + + -l, --level=LEVEL Do backup level LEVEL (default $DUMP_LEVEL). + -f, --force Force backup even if today's log file already + exists. + -v, --verbose[=LEVEL] Set verbosity level. Default 100. + -t, --time=TIME Wait till TIME, then do backup. + +Informational options: + -h, --help Display this help message. + -V, --version Display program version. + + Optional argument WHEN is for backward compatibility only. It has been + superseded by --time option. + TIME argument can be one of: + + now -- do backup immediately. + HH -- do backup at HH hours. + HH:MM -- do backup at HH:MM. + +Send bug reports to @PACKAGE_BUGREPORT@. +EOF +} + +# For compatibility with previous versions, deduce the backup level +# from the command name +case "$PROGNAME" in +level-[0-9]) DUMP_LEVEL=`expr $PROGNAME : 'level-\([0-9][0-9]*\)'`;; +esac + +for opt +do + if [ -z "$prev" ]; then + option=$opt + optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'` + else + option="${prev}=$opt" + prev="" + optarg=$opt + fi + case $option in + --l=*|--le=*|--lev=*|--leve=*|--level=*) + DUMP_LEVEL=$optarg + ;; + -l|--l|--le|--lev|--leve|--level) + prev=$option + ;; + --verb=*|--verbo=*|--verbos=*|--verbose=*) + VERBOSE=$optarg + ;; + -v|--verb|--verbo|--verbos|--verbose) + VERBOSE=100 + ;; + -v*) VERBOSE=`expr $option : "-v\(.*\)"`;; + --t=*|--ti=*|--tim=*|--time=*) + TIME=$optarg + ;; + -t) prev=--t;; + -t*) TIME=`expr $option : "-t\(.*\)"`;; + --t|--ti|--tim|--time) + prev=$option + ;; + -V|--v|--ve|--ver|--vers|--versi|--versio|--version) + echo "backup (@PACKAGE_NAME@) @VERSION@" + license + exit;; + -h|--h|--he|--hel|--help) + usage + exit;; + -f|--f|--fo|--for|--forc|--force) + FORCE=yes + ;; + *) if [ "x$TIME" != "x" ]; then + bailout "Extra argument. Try $PROGNAME --help for more info." + else + TIME=$option + fi;; + esac +done + +if [ "x$TIME" = x ]; then + bailout "No backup time specified. Try $PROGNAME --help for more info." + exit 1 +fi + +init_backup + +# Maybe sleep until around specified or default hour. +wait_time $TIME + +if [ $DUMP_LEVEL -ne 0 ]; then + PREV_LEVEL=`expr $DUMP_LEVEL - 1` + PREV_DATE=`ls -t ${LOGPATH}/log-*-level-$PREV_LEVEL| + head -n 1| + sed "s,${LOGPATH}/log-\(.*\)-level.*,\1,"` + if [ "x$PREV_DATE" = x ]; then + bailout "Can't determine date of the previous backup" + fi + message 0 "Backup from $PREV_DATE to $NOW" +fi + +# start doing things + +# Make sure the log file did not already exist. Create it. + +if [ "x$FORCE" = "xyes" ]; then + rm ${LOGFILE} +fi + +if [ -f "${LOGFILE}" ] ; then + bailout "Log file ${LOGFILE} already exists." +else + touch "${LOGFILE}" +fi +message 1 "Ready for backup." +message 10 "TAR invocation: $TAR_PART1" +message 20 "Variables:" +message 20 "BACKUP_DIRS=$BACKUP_DIRS" +message 20 "BACKUP_FILES=$BACKUP_FILES" + +# The buch of commands below is run in a subshell for which all output is +# piped through `tee' to the logfile. Doing this, instead of having +# multiple pipelines all over the place, is cleaner and allows access to +# the exit value from various commands more easily. +( + message 1 "preparing tapes" + $MT_BEGIN "${TAPE_FILE}" + rm -f "${VOLNO_FILE}" + + message 1 "processing backup directories" + + set - ${BACKUP_DIRS} + while [ $# -ne 0 ] ; do + date="`date`" + fs="`echo \"${1}\" | sed -e 's/^.*://'`" + fs=`root_fs $fs` + fsname="`echo \"${1}\" | sed -e 's/\//:/g'`" + remotehost="`expr \"${1}\" : '\([^/][^/]*\):.*'`" + if [ -z "$remotehost" ]; then + remotehost=$localhost + fi + + echo "Backing up ${1} at ${date}" + message 10 "fs=$fs" + message 10 "fsname=$fsname" + message 10 "remotehost=$remotehost" + if [ $DUMP_LEVEL -eq 0 ]; then + make_level_log ${remotehost} + else + echo "Last `prev_level` dump on this filesystem was on $PREV_DATE" + remote_run "${remotehost}" cp "`level_log_name ${fsname} $PREV_LEVEL`" "`level_log_name temp`" + fi + + ${DUMP_BEGIN-:} $DUMP_LEVEL $remotehost $fs $fsname + backup_host ${remotehost} \ + "--listed=`level_log_name temp`" \ + "--label='`print_level` backup of ${fs} on ${remotehost} at ${NOW}'" \ + -C ${fs} . + + # `rsh' doesn't exit with the exit status of the remote command. What + # stupid lossage. TODO: think of a reliable workaround. + if [ $? -ne 0 ] ; then + echo "Backup of ${1} failed." 1>&2 + # I'm assuming that the tar will have written an empty + # file to the tape, otherwise I should do a cat here. + else + flush_level_log ${remotehost} ${fsname} + fi + ${MT_STATUS} "$TAPE_FILE" + ${DUMP_END-:} $DUMP_LEVEL $remotehost $fs $fsname + echo "sleeping ${SLEEP_TIME} seconds" + sleep ${SLEEP_TIME} + shift + done + + # Dump any individual files requested. + + if [ "x${BACKUP_FILES}" != "x" ] ; then + message 1 "processing individual files" + + date="`date`" + + if [ $DUMP_LEVEL -eq 0 ]; then + make_level_log $localhost + else + echo "Last `prev_level` dump on this filesystem was on $PREV_DATE" + remote_run "${localhost}" cp "`level_log_name MISC $PREV_LEVEL`" "`level_log_name temp`" + fi + + echo "Backing up miscellaneous files at ${date}" + + ${DUMP_BEGIN-:} $DUMP_LEVEL $localhost MISC MISC + backup_host $localhost \ + "--listed=`level_log_name temp`"\ + "--label='`print_level` backup of miscellaneous files at ${NOW}'" \ + ${BACKUP_FILES} + + if [ $? -ne 0 ] ; then + echo "Backup of miscellaneous files failed." + # I'm assuming that the tar will have written an empty + # file to the tape, otherwise I should do a cat here. + else + flush_level_log $localhost MISC + fi + ${MT_STATUS} "$TAPE_FILE" + ${DUMP_END-:} $DUMP_LEVEL $localhost MISC MISC + else + echo "No miscellaneous files specified" + fi + + message 1 "final cleanup" + + $MT_REWIND "${TAPE_FILE}" + $MT_OFFLINE "${TAPE_FILE}" + echo "." +) 2>&1 | tee -a "${LOGFILE}" + +if test "${ADMINISTRATOR}" != NONE; then + echo "Sending the dump log to ${ADMINISTRATOR}" + mail -s "Results of backup started ${startdate}" ${ADMINISTRATOR} < "${LOGFILE}" +fi + +# EOF |