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Dogcows Code - chaz/tar/blob - scripts/level-0
15f9e64710c7b4007be6bd829ebedbd2dc574660
3 # Run this script as root on the machine that has the tape drive, to make a
6 # If you give `now' as an argument, the dump is done immediately.
7 # Otherwise, it waits until 1am, or until the hour given as argument.
8 # Specify the hour as a number from 0 to 23.
10 # You must edit the file `backup-specs' to set the parameters for your site.
12 # Useful for backup-specs, in case things have to be done slightly
13 # differently for different dump levels.
16 # Insure `mail' is in PATH.
17 PATH
="/usr/ucb:${PATH}"
20 # This is not the most reliable test in the world. The following might be
24 # euid="`sed -ne '/^'\"${whoami}\"':/{s/^[^:]*:[^:]*://;s/:.*//p;q;}' /etc/passwd`"
25 # if [ "${euid}" != 0 ]; then ...
28 echo "The backup must be run as root or else some files will fail to be dumped."
32 # Get the values of BACKUP_DIRS, BACKUP_FILES, and other variables.
35 # Maybe sleep until around specified or default hour.
36 if [ "${1}" != "now" ]; then
37 if [ "${1}x" != "x" ]; then
43 pausetime
="`date | awk '
45 hr = substr($4, 1, 2);
46 mn = substr($4, 4, 2);
47 if((hr + 0) < (spec + 0))
48 print 3600 * (spec - hr) - 60 * mn;
50 print 3600 * (spec + (24 - hr)) - 60 * mn;
54 echo "${SLEEP_MESSAGE}"
60 # Put startdate in the subject line of mailed report, since if it happens
61 # to run longer than 24 hours (as may be the case if someone forgets to put
62 # in the next volume of the tape in adequate time), the backup date won't
63 # appear too misleading.
68 # Logfile name should be in the form ``log-1993-03-18-level-0''
69 # i.e. year-month-date. This format is useful for sorting by name, since
70 # logfiles are intentionally kept online for future reference.
71 LOGFILE
=log
-`date | awk '
73 d["Jan"] = "01"; d["Feb"] = "02"; d["Mar"] = "03";
74 d["Apr"] = "04"; d["May"] = "05"; d["Jun"] = "06";
75 d["Jul"] = "07"; d["Aug"] = "08"; d["Sep"] = "09";
76 d["Oct"] = "10"; d["Nov"] = "11"; d["Dec"] = "12";
81 print $6 "-" d[$2] "-" $3;
82 }'`-level-${DUMP_LEVEL}
84 localhost
="`hostname | sed -e 's/\..*//'`"
86 TAR_PART1
="/usr/local/bin/tar -c --multi-volume --one-file-system --block=${BLOCKING} --sparse --volno-file=${VOLNO_FILE}"
88 # Only use --info-script if DUMP_REMIND_SCRIPT was defined in backup-specs
89 if [ "x${DUMP_REMIND_SCRIPT}" != "x" ]; then
90 TAR_PART1
="${TAR_PART1} --info-script='${DUMP_REMIND_SCRIPT}'"
93 # Make sure the log file did not already exist. Create it.
95 if [ -f "${LOGFILE}" ] ; then
96 echo "Log file ${LOGFILE} already exists." 1>&2
102 # Most everything below here is run in a subshell for which all output is
103 # piped through `tee' to the logfile. Doing this, instead of having
104 # multiple pipelines all over the place, is cleaner and allows access to
105 # the exit value from various commands more easily.
107 # Caveat: Some version of `mt' require `-t', not `-f'.
108 mt
-f "${TAPE_FILE}" rewind
109 rm -f "${VOLNO_FILE}"
112 while [ $# -ne 0 ] ; do
114 remotehost
="`echo \"${1}\" | sed -e 's/:.*$//'`"
115 fs
="`echo \"${1}\" | sed -e 's/^.*://'`"
116 fsname
="`echo \"${1}\" | sed -e 's/\//:/g'`"
118 # This filename must be absolute; it is opened on the machine that runs tar.
119 TAR_PART2
="--listed=/etc/tar-backup/temp.level-0"
120 TAR_PART3
="--label='Full backup of ${fs} on ${remotehost} at ${date}' -C ${fs} ."
122 echo "Backing up ${1} at ${date}"
124 # Actually back things up.
126 if [ "z${localhost}" != "z${remotehost}" ] ; then
127 rsh "${remotehost}" mkdir /etc
/tar-backup > /dev
/null
2>&1
128 rsh "${remotehost}" rm -f /etc
/tar-backup/temp.level
-0
129 rsh "${remotehost}" ${TAR_PART1} -f "${localhost}:${TAPE_FILE}" ${TAR_PART2} ${TAR_PART3}
131 mkdir /etc
/tar-backup > /dev
/null
2>&1
132 rm -f /etc
/tar-backup/temp.level
-0
133 # Using `sh -c exec' causes nested quoting and shell substitution
134 # to be handled here in the same way rsh handles it.
135 sh
-c "exec ${TAR_PART1} -f \"${TAPE_FILE}\" ${TAR_PART2} ${TAR_PART3}"
138 # `rsh' doesn't exit with the exit status of the remote command. What
139 # stupid lossage. TODO: think of a reliable workaround.
140 if [ $?
-ne 0 ] ; then
141 echo "Backup of ${1} failed." 1>&2
142 # I'm assuming that the tar will have written an empty
143 # file to the tape, otherwise I should do a cat here.
145 if [ "z${localhost}" != "z${remotehost}" ] ; then
146 rsh "${remotehost}" mv -f /etc
/tar-backup/temp.level
-0 "/etc/tar-backup/${fsname}.level-0"
148 mv -f /etc
/tar-backup/temp.level
-0 "/etc/tar-backup/${fsname}.level-0"
156 # Dump any individual files requested.
158 if [ "x${BACKUP_FILES}" != "x" ] ; then
161 TAR_PART2
="--listed=/etc/tar-backup/temp.level-0"
162 TAR_PART3
="--label='Full backup of miscellaneous files at ${date}'"
164 mkdir /etc
/tar-backup > /dev
/null
2>&1
165 rm -f /etc
/tar-backup/temp.level
-0
167 echo "Backing up miscellaneous files at ${date}"
169 # Using `sh -c exec' causes nested quoting and shell substitution
170 # to be handled here in the same way rsh handles it.
171 sh
-c "exec ${TAR_PART1} -f \"${TAPE_FILE}\" ${TAR_PART2} ${TAR_PART3} ${BACKUP_FILES}"
173 # `rsh' doesn't exit with the exit status of the remote command. What
174 # lossage. TODO: think of a reliable workaround.
175 if [ $?
-ne 0 ] ; then
176 echo "Backup of miscellaneous files failed."
177 # I'm assuming that the tar will have written an empty
178 # file to the tape, otherwise I should do a cat here.
180 mv -f /etc
/tar-backup/temp.level
-0 /etc
/tar-backup/misc.level
-0
184 echo "No miscellaneous files specified"
187 # Caveat: some versions of `mt' use `-t' instead of `-f'.
188 mt
-f "${TAPE_FILE}" rewind
189 mt
-f "${TAPE_FILE}" offl
191 ) 2>&1 | tee -a "${LOGFILE}"
193 echo "Sending the dump log to ${ADMINISTRATOR}"
194 mail -s "Results of backup started ${startdate}" ${ADMINISTRATOR} < "${LOGFILE}"
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