X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=scripts%2Flevel-1;h=d7f3e0bad86fdc8cc6f6f3c206caa79c9c481698;hb=f112b1363bc3747a5534d94a14d70f7ec2775d8b;hp=447dbd220f3eedba0dc4d078b33c19ea6935566a;hpb=7c1dad98bb36e6b1c53906082e5c281e5a698d00;p=chaz%2Ftar diff --git a/scripts/level-1 b/scripts/level-1 index 447dbd2..d7f3e0b 100644 --- a/scripts/level-1 +++ b/scripts/level-1 @@ -1,4 +1,4 @@ -#!/bin/sh +#!/bin/sh # # Run this script as root on the machine that has the tape drive, to make a # level-1 dump containing all files changed since the last full dump. @@ -8,21 +8,31 @@ # # You must edit the file `backup-specs' to set the parameters for your site. -# Insure `mail' is in PATH. +# Useful for backup-specs, in case things have to be done slightly +# differently for different dump levels. +DUMP_LEVEL=1 + +# Insure `mail' is in PATH. PATH="/usr/ucb:${PATH}" export PATH +# This is not the most reliable test in the world. The following might be +# more predictable: +# +# whoami="`whoami`" +# euid="`sed -ne '/^'\"${whoami}\"':/{s/^[^:]*:[^:]*://;s/:.*//p;q;}' /etc/passwd`" +# if [ "${euid}" != 0 ]; then ... +# if [ ! -w / ]; then echo "The backup must be run as root or else some files will fail to be dumped." exit 1 fi -# Get the values of BACKUP_DIRS and BACKUP_FILES, and other variables. +# Get the values of BACKUP_DIRS, BACKUP_FILES, and other variables. . ./backup-specs # Maybe sleep until around specified or default hour. -# -if [ "${1}" != "now" ]; then +if [ "z${1}" != "znow" ]; then if [ "${1}x" != "x" ]; then spec="${1}" else @@ -36,18 +46,11 @@ if [ "${1}" != "now" ]; then if((hr + 0) < (spec + 0)) print 3600 * (spec - hr) - 60 * mn; else - print 3600 * (spec + (24 - hr)) - 60 * mn; + print 3600 * (spec + (24 - hr)) - 60 * mn; }' spec=\"${spec}\"`" clear - - # Put your favorite message here. We just want a screenful of obnoxious - # caps warning people from messing with the dedicated terminal. - awk 'BEGIN { - for (i = 0; i < 30; i++) - print " D O N O T T O U C H T H I S T E R M I N A L !!!!!" - }' /dev/null - + echo "${SLEEP_MESSAGE}" sleep "${pausetime}" fi @@ -56,142 +59,143 @@ fi # Put startdate in the subject line of mailed report, since if it happens # to run longer than 24 hours (as may be the case if someone forgets to put # in the next volume of the tape in adequate time), the backup date won't -# appear too misleading. +# appear too misleading. startdate="`date`" here="`pwd`" -# Logfile name should be in the form ``log-1993-03-18-full'' -# i.e. year-month-date. This format is useful for sorting by name. -LOGFILE=log-`date | awk ' - BEGIN { - d["Jan"] = "01"; d["Feb"] = "02"; d["Mar"] = "03"; - d["Apr"] = "04"; d["May"] = "05"; d["Jun"] = "06"; - d["Jul"] = "07"; d["Aug"] = "08"; d["Sep"] = "09"; - d["Oct"] = "10"; d["Nov"] = "11"; d["Dec"] = "12"; - } - { - if ($3 < 10) - $3 = "0" $3; - print $6 "-" d[$2] "-" $3; - }'`-level-1 - -HOST="`hostname | sed -e 's/\..*//'`" - -TAR_PART1="/usr/local/bin/tar -c --multi-volume --one-file-system --block=${BLOCKING} --sparse --volno-file=${VOLNO_FILE}" +# Logfile name should be in the form ``log-1993-03-18-level-1'' +# They go in the subdirectory `log' of the current directory. +# i.e. year-month-date. This format is useful for sorting by name, since +# logfiles are intentionally kept online for future reference. +LOGFILE="log/log-`date | sed -ne ' + s/[^ ]* *\([^ ]*\) *\([^ ]*\).* \([^ ]*\)$/\3-\1-\2/ + /-[0-9]$/s/\([0-9]\)$/0\1/ + /Jan/{s/Jan/01/p;q;} + /Feb/{s/Feb/02/p;q;} + /Mar/{s/Mar/03/p;q;} + /Apr/{s/Apr/04/p;q;} + /May/{s/May/05/p;q;} + /Jun/{s/Jun/06/p;q;} + /Jul/{s/Jul/07/p;q;} + /Aug/{s/Aug/08/p;q;} + /Sep/{s/Sep/09/p;q;} + /Oct/{s/Oct/10/p;q;} + /Nov/{s/Nov/11/p;q;} + /Dec/{s/Dec/12/p;q;}'`-level-${DUMP_LEVEL}" + +localhost="`hostname | sed -e 's/\..*//'`" + +TAR_PART1="${TAR} -c --multi-volume --one-file-system --blocking=${BLOCKING} --sparse --volno-file=${VOLNO_FILE}" # Only use --info-script if DUMP_REMIND_SCRIPT was defined in backup-specs if [ "x${DUMP_REMIND_SCRIPT}" != "x" ]; then - TAR_PART1="${TAR_PART1} --info-script=${DUMP_REMIND_SCRIPT}" + TAR_PART1="${TAR_PART1} --info-script='${DUMP_REMIND_SCRIPT}'" fi # Make sure the log file did not already exist. Create it. if [ -f "${LOGFILE}" ] ; then - echo "Log file ${LOGFILE} already exists." + echo "Log file ${LOGFILE} already exists." 1>&2 exit 1 else touch "${LOGFILE}" fi -# Caveat: Some version of `mt' require `-t', not `-f'. -mt -f "${TAPE_FILE}" rewind -rm -f "${VOLNO_FILE}" - -set - "${BACKUP_DIRS}" -while [ $# -ne 0 ] ; do - host="`echo \"${1}\" | sed -e 's/:.*$//'`" - fs="`echo \"${1}\" | sed -e 's/^.*://'`" - date="`date`" - fsname="`echo \"${1}\" | sed -e 's/\//:/g'`" - - # This filename must be absolute; it is opened on the machine that runs tar. - TAR_PART2="--listed=/etc/tar-backup/temp.level-1" - TAR_PART3="--label='level 1 backup of ${fs} on ${host} at ${date}' -C ${fs} ." - - echo "Backing up ${1} at ${date}" | tee -a "${LOGFILE}" - echo "Last full dump on this filesystem:" | "tee -a ${LOGFILE}" - - if [ "z${host}" != "z${HOST}" ] ; then - rsh "${host}" "ls -l /etc/tar-backup/${fsname}.level-0; \ - cp /etc/tar-backup/${fsname}.level-0 /etc/tar-backup/temp.level-1" 2>&1 \ - | tee -a "${LOGFILE}" - else - ls -l /etc/tar-backup/${fsname}.level-0 2>&1 | tee -a ${LOGFILE} - cp /etc/tar-backup/${fsname}.level-0 /etc/tar-backup/temp.level-1 2>&1 | tee -a ${LOGFILE} - fi - - # Actually back things up. - - if [ "z${host}" != "z${HOST}" ] ; then - rsh "${host}" ${TAR_PART1} -f ${HOST}:${TAPE_FILE} ${TAR_PART2} ${TAR_PART3} 2>&1 \ - | tee -a "${LOGFILE}" - else - # Using `sh -c exec' causes nested quoting and shell substitution - # to be handled here in the same way rsh handles it. - sh -c "exec ${TAR_PART1} -f ${TAPE_FILE} ${TAR_PART2} ${TAR_PART3}" 2>&1 | tee -a "${LOGFILE}" - fi - - # This doesn't presently work, of course, because $? is set to the exit - # status of the last thing in the pipeline of the previous command, - # namely `tee'. We really want the exit status of the sh command - # running tar, but getting this seems to be nontrivial. --friedman - if [ $? -ne 0 ] ; then - echo "Backup of ${1} failed." | tee -a "${LOGFILE}" +# Most everything below here 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. +( + # Caveat: Some version of `mt' require `-t', not `-f'. + mt -f "${TAPE_FILE}" rewind + rm -f "${VOLNO_FILE}" + + set - ${BACKUP_DIRS} + while [ $# -ne 0 ] ; do + date="`date`" + remotehost="`echo \"${1}\" | sed -e 's/:.*$//'`" + fs="`echo \"${1}\" | sed -e 's/^.*://'`" + fsname="`echo \"${1}\" | sed -e 's/\//:/g'`" + + # This filename must be absolute; it is opened on the machine that runs tar. + TAR_PART2="--listed=/etc/tar-backup/temp.level-1" + TAR_PART3="--label='level 1 backup of ${fs} on ${remotehost} at ${date}' -C ${fs} ." + + echo "Backing up ${1} at ${date}" + echo "Last full dump on this filesystem:" + + if [ "z${remotehost}" != "z${localhost}" ] ; then + rsh "${remotehost}" "ls -l /etc/tar-backup/${fsname}.level-0; \ + cp /etc/tar-backup/${fsname}.level-0 /etc/tar-backup/temp.level-1" + else + ls -l "/etc/tar-backup/${fsname}.level-0" + cp "/etc/tar-backup/${fsname}.level-0" /etc/tar-backup/temp.level-1 + fi + + # Actually back things up. + + if [ "z${remotehost}" != "z${localhost}" ] ; then + rsh "${remotehost}" ${TAR_PART1} -f "${localhost}:${TAPE_FILE}" ${TAR_PART2} ${TAR_PART3} + else + # Using `sh -c exec' causes nested quoting and shell substitution + # to be handled here in the same way rsh handles it. + sh -c "exec ${TAR_PART1} -f \"${TAPE_FILE}\" ${TAR_PART2} ${TAR_PART3}" + fi + + # `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 ${1} failed." + # I'm assuming that the tar will have written an empty + # file to the tape, otherwise I should do a cat here. + else + if [ "z${localhost}" != "z${remotehost}" ] ; then + rsh "${remotehost}" mv -f /etc/tar-backup/temp.level-1 "/etc/tar-backup/${fsname}.level-1" + else + mv -f /etc/tar-backup/temp.level-1 "/etc/tar-backup/${fsname}.level-1" + fi + fi + ${TAPE_STATUS} + sleep 60 + shift + done + + # Dump any individual files requested. + + if [ "x${BACKUP_FILES}" != "x" ] ; then + date="`date`" + TAR_PART2="--listed=/etc/tar-backup/temp.level-1" + TAR_PART3="--label='Incremental backup of miscellaneous files at ${date}'" + + echo "Backing up miscellaneous files at ${date}" + echo "Last full dump of these files:" + ls -l /etc/tar-backup/misc.level-0 + + rm -f /etc/tar-backup/temp.level-1 + cp /etc/tar-backup/misc.level-0 /etc/tar-backup/temp.level-1 + + # Using `sh -c exec' causes nested quoting and shell substitution + # to be handled here in the same way rsh handles it. + sh -c "exec ${TAR_PART1} -f \"${TAPE_FILE}\" ${TAR_PART2} ${TAR_PART3} ${BACKUP_FILES}" + + if [ $? -ne 0 ] ; then + echo "Backup of miscellaneous files 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 - if [ ${HOST} != ${host} ] ; then - rsh ${host} mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/${fsname}.level-1 2>&1 \ - | tee -a ${LOGFILE} - else - mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/${fsname}.level-1 2>&1 \ - | tee -a ${LOGFILE} - fi - fi - ${TAPE_STATUS} | tee -a "${LOGFILE}" - sleep 60 - shift -done - -# Dump any individual files requested. - -if [ "x${BACKUP_FILES}" != "x" ] ; then - date="`date`" - TAR_PART2="--listed=/etc/tar-backup/temp.level-1" - TAR_PART3="--label='Incremental backup of miscellaneous files at ${date}'" - - echo "Backing up miscellaneous files at ${date}" | tee -a "${LOGFILE}" - echo "Last full dump of these files:" | tee -a "${LOGFILE}" - ls -l /etc/tar-backup/misc.level-0 2>&1 | tee -a "${LOGFILE}" - - rm -f /etc/tar-backup/temp.level-1 2>&1 | tee -a "${LOGFILE}" - cp /etc/tar-backup/misc.level-0 /etc/tar-backup/temp.level-1 2>&1 | tee -a "${LOGFILE}" - - # Using `sh -c exec' causes nested quoting and shell substitution - # to be handled here in the same way rsh handles it. - sh -c "exec ${TAR_PART1} -f ${TAPE_FILE} ${TAR_PART2} ${TAR_PART3} ${BACKUP_FILES}" 2>&1 \ - | tee -a "${LOGFILE}" - - # This doesn't presently work, of course, because $? is set to the exit - # status of the last thing in the pipeline of the previous command, - # namely `tee'. We really want the exit status of the sh command - # running tar, but getting this seems to be nontrivial. --friedman - if [ $? -ne 0 ] ; then - echo "Backup of miscellaneous files failed." | tee -a "${LOGFILE}" - # I'm assuming that the tar will have written an empty - # file to the tape, otherwise I should do a cat here. - else - mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/misc.level-1 2>&1 | tee -a "${LOGFILE}" - fi - ${TAPE_STATUS} | tee -a "${LOGFILE}" -else - echo "No miscellaneous files specified" | tee -a "${LOGFILE}" -fi - -# Caveat: some versions of `mt' use `-t' instead of `-f'. -mt -f "${TAPE_FILE}" rewind -mt -f "${TAPE_FILE}" offl + else + mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/misc.level-1 + fi + ${TAPE_STATUS} + else + echo "No miscellaneous files specified" + fi + + # Caveat: some versions of `mt' use `-t' instead of `-f'. + mt -f "${TAPE_FILE}" rewind + mt -f "${TAPE_FILE}" offl + +) 2>&1 | tee -a "${LOGFILE}" echo "Sending the dump log to ${ADMINISTRATOR}" mail -s "Results of backup started ${startdate}" ${ADMINISTRATOR} < "${LOGFILE}"