258 lines
7.2 KiB
Bash
258 lines
7.2 KiB
Bash
#! /bin/sh
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# Make backups.
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# Copyright 2004-2006, 2013 Free Software Foundation
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# This file is part of GNU tar.
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# GNU tar is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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# GNU tar is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Load library routines
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SYSCONFDIR=${SYSCONFDIR-/usr/etc}
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. ${LIBDIR-/usr/lib/tar}/backup.sh
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DUMP_LEVEL=0
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TIME=
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NOW=`now`
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usage() {
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cat - <<EOF
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usage: $PROGNAME [OPTIONS] [WHEN]
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Options are:
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-l, --level=LEVEL Do backup level LEVEL (default $DUMP_LEVEL).
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-f, --force Force backup even if today's log file already
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exists.
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-v, --verbose[=LEVEL] Set verbosity level. Default 100.
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-t, --time=TIME Wait till TIME, then do backup.
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Informational options:
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-h, --help Display this help message.
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-V, --version Display program version.
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Optional argument WHEN is for backward compatibility only. It has been
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superseded by --time option.
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TIME argument can be one of:
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now -- do backup immediately.
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HH -- do backup at HH hours.
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HH:MM -- do backup at HH:MM.
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Send bug reports to bug-tar@gnu.org.
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EOF
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}
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# For compatibility with previous versions, deduce the backup level
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# from the command name
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case "$PROGNAME" in
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level-[0-9]) DUMP_LEVEL=`expr $PROGNAME : 'level-\([0-9][0-9]*\)'`;;
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esac
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for opt
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do
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if [ -z "$prev" ]; then
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option=$opt
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optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
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else
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option="${prev}=$opt"
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prev=""
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optarg=$opt
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fi
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case $option in
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--l=*|--le=*|--lev=*|--leve=*|--level=*)
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DUMP_LEVEL=$optarg
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;;
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-l?*) DUMP_LEVEL=`expr $option : '-l\(.*\)'`;;
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-l|--l|--le|--lev|--leve|--level)
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prev=--level
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;;
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--verb=*|--verbo=*|--verbos=*|--verbose=*)
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VERBOSE=$optarg
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;;
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-v|--verb|--verbo|--verbos|--verbose)
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VERBOSE=100
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;;
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-v*) VERBOSE=`expr $option : '-v\(.*\)'`;;
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--t=*|--ti=*|--tim=*|--time=*)
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TIME=$optarg
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;;
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-t?*) TIME=`expr $option : '-t\(.*\)'`;;
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-t|--t|--ti|--tim|--time)
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prev=--time
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;;
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-V|--v|--ve|--ver|--vers|--versi|--versio|--version)
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echo "backup (GNU tar) 1.31"
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license
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exit;;
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-h|--h|--he|--hel|--help)
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usage
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exit;;
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-f|--f|--fo|--for|--forc|--force)
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FORCE=yes
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;;
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*) if [ "x$TIME" != "x" ]; then
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bailout "Extra argument. Try $PROGNAME --help for more info."
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else
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TIME=$option
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fi;;
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esac
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done
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if [ "x$TIME" = x ]; then
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bailout "No backup time specified. Try $PROGNAME --help for more info."
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exit 1
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fi
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init_backup
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# Maybe sleep until around specified or default hour.
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wait_time $TIME
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if [ $DUMP_LEVEL -ne 0 ]; then
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PREV_LEVEL=`expr $DUMP_LEVEL - 1`
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PREV_DATE=`ls -t ${LOGPATH}/log-*-level-$PREV_LEVEL|
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head -n 1|
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sed "s,${LOGPATH}/log-\(.*\)-level.*,\1,"`
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if [ "x$PREV_DATE" = x ]; then
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bailout "Can't determine date of the previous backup"
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fi
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message 0 "Backup from $PREV_DATE to $NOW"
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fi
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# start doing things
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# Make sure the log file did not already exist. Create it.
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if [ "x$FORCE" = "xyes" ]; then
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rm ${LOGFILE}
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fi
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if [ -f "${LOGFILE}" ] ; then
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bailout "Log file ${LOGFILE} already exists."
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else
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touch "${LOGFILE}"
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fi
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message 1 "Ready for backup."
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message 10 "TAR invocation: $TAR_PART1"
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message 20 "Variables:"
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message 20 "BACKUP_DIRS=$BACKUP_DIRS"
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message 20 "BACKUP_FILES=$BACKUP_FILES"
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# The buch of commands below is run in a subshell for which all output is
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# piped through 'tee' to the logfile. Doing this, instead of having
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# multiple pipelines all over the place, is cleaner and allows access to
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# the exit value from various commands more easily.
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(
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message 1 "preparing tapes"
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if ! $MT_BEGIN "${TAPE_FILE}"; then
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echo >&2 "$0: tape initialization failed"
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exit 1
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fi
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rm -f "${VOLNO_FILE}"
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message 1 "processing backup directories"
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set - ${BACKUP_DIRS}
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while [ $# -ne 0 ] ; do
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date="`date`"
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fs="`echo \"${1}\" | sed -e 's/^.*://'`"
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fs=`root_fs $fs`
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fsname="`echo \"${1}\" | sed -e 's/\//:/g'`"
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remotehost="`expr \"${1}\" : '\([^/][^/]*\):.*'`"
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if [ -z "$remotehost" ]; then
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remotehost=$localhost
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fi
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echo "Backing up ${1} at ${date}"
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message 10 "fs=$fs"
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message 10 "fsname=$fsname"
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message 10 "remotehost=$remotehost"
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if [ $DUMP_LEVEL -eq 0 ]; then
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make_level_log ${remotehost}
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else
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echo "Last `prev_level` dump on this filesystem was on $PREV_DATE"
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remote_run "${remotehost}" cp "`level_log_name ${fsname} $PREV_LEVEL`" "`level_log_name temp`"
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fi
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${DUMP_BEGIN-:} $DUMP_LEVEL $remotehost $fs $fsname
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backup_host ${remotehost} \
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"--listed=`level_log_name temp`" \
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"--label='`print_level` backup of ${fs} on ${remotehost} at ${NOW}'" \
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-C ${fs} .
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# 'rsh' doesn't exit with the exit status of the remote command. What
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# stupid lossage. TODO: think of a reliable workaround.
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if [ $? -ne 0 ] ; then
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echo "$0: backup of ${1} failed." 1>&2
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# I'm assuming that the tar will have written an empty
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# file to the tape, otherwise I should do a cat here.
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else
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flush_level_log ${remotehost} ${fsname}
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fi
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${MT_STATUS} "$TAPE_FILE"
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${DUMP_END-:} $DUMP_LEVEL $remotehost $fs $fsname
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echo "sleeping ${SLEEP_TIME} seconds"
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sleep ${SLEEP_TIME}
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shift
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done
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# Dump any individual files requested.
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if [ "x${BACKUP_FILES}" != "x" ] ; then
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message 1 "processing individual files"
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date="`date`"
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if [ $DUMP_LEVEL -eq 0 ]; then
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make_level_log $localhost
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else
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echo "Last `prev_level` dump on this filesystem was on $PREV_DATE"
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remote_run "${localhost}" cp "`level_log_name MISC $PREV_LEVEL`" "`level_log_name temp`"
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fi
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echo "Backing up miscellaneous files at ${date}"
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${DUMP_BEGIN-:} $DUMP_LEVEL $localhost MISC MISC
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backup_host $localhost \
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"--listed=`level_log_name temp`"\
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"--label='`print_level` backup of miscellaneous files at ${NOW}'" \
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${BACKUP_FILES}
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if [ $? -ne 0 ] ; then
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echo "Backup of miscellaneous files failed."
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# I'm assuming that the tar will have written an empty
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# file to the tape, otherwise I should do a cat here.
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else
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flush_level_log $localhost MISC
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fi
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${MT_STATUS} "$TAPE_FILE"
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${DUMP_END-:} $DUMP_LEVEL $localhost MISC MISC
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else
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echo "No miscellaneous files specified"
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fi
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message 1 "final cleanup"
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$MT_REWIND "${TAPE_FILE}"
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$MT_OFFLINE "${TAPE_FILE}"
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echo "."
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) 2>&1 | tee -a "${LOGFILE}"
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RC=$?
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if test "${ADMINISTRATOR}" != NONE; then
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echo "Sending the dump log to ${ADMINISTRATOR}"
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mail -s "Results of backup started ${startdate}" ${ADMINISTRATOR} < "${LOGFILE}"
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fi
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exit $RC
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# EOF
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