First Version
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Stefan Heinrichsen
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161
do_full_backup.sh
Executable file
161
do_full_backup.sh
Executable file
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#!/bin/bash
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# ToDos
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#
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#
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SOURCE_FOLDER="/opt/data/backup/backup_folders"
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LTO_DEV="/dev/st0"
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BACKUP_NAME="full_backup"
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TAPE_FOLDER="/opt/data/backup/tape_info"
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TAPE_CHECK="1440"
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TAPE_DELAY="30s"
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MAIL="backup_phex@stefan.heinrichsen.net"
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MAX_TAPE_SIZE="500G"
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DATE="$(date +%Y-%m-%d)"
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TIME="$(date +%H-%M)"
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LOGFILE="$(mktemp -t tar_output_XXX.txt)"
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MESSAGE=""
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TAPE_OLDFILE="$(ls -tC1 ${TAPE_FOLDER} | tail -n 1)"
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if [ ! -r $SOURCE_FOLDER ]; then
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MESSAGE="ERROR: Source folder does not exist or is not readable."
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fi
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if [ ! -w $LTO_DEV ]; then
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MESSAGE="ERROR: Output file/device does not exist or is not writeable."
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fi
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if [ ! -w $TAPE_FOLDER ]; then
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MESSAGE="ERROR: Tape info-folder does not exist or is not writeable."
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fi
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if [ ! -z "$MESSAGE" ]; then
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echo $MESSAGE; exit 1
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fi
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# loop to wait for valid tape (check for 24h (288 time with 5 minutes delay), then give up
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# Format der Serieal ist: C140604093
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COUNTER=0
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TAPE_SERIAL="$(sg_rmsn -r /dev/st0 2> /dev/null)"
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EXIT_CODE=$?
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while [ $COUNTER -lt $TAPE_CHECK -a $EXIT_CODE -ne 0 ]; do
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# above check was negativ: send mail, wait and recheck
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echo $TAPE_SERIAL
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if [ $EXIT_CODE -ne 0 -a $COUNTER -eq 0 ]; then
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mail -s "Backup - ${BACKUP_NAME} - no tape found" $MAIL <<EOM
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Hi Admin,
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it seems there is currently no tape insert into the tape drive.
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Please insert a tape into the drive to store the backup. It should be
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a new one or the oldest of the backup-set.
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Currently the oldest tape file seems to be:
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$TAPE_OLDFILE
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Best regards,
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backup-script
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EOM
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fi
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sleep $TAPE_DELAY
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TAPE_SERIAL="$(sg_rmsn -r /dev/st0 2> /dev/null)"
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EXIT_CODE=$?
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let COUNTER=COUNTER+1
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done
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echo Tape suche abgeschlossen
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# Check if we had a timeout. If so we send a mail an exit
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if [ $COUNTER -eq $TAPE_CHECK ]; then
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# Timeout!
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mail -s "Backup - ${BACKUP_NAME} - tape-timeout" $MAIL <<EOM
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Hi Admin,
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even after waiting for the defined timout values: ${TAPE_CHECK} time ${TAPE_DELAY}
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no tape was inserted. I gave up...
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Best regards,
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backup-script
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EOM
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echo timeout
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exit 1;
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fi
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# For development only
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# TAPE_SERIAL="C140604093"
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TAPE_FILE="${TAPE_FOLDER}/${TAPE_SERIAL}.log"
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# So we should have a tape serial now, will check existing tape infos now
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# First check if it is a new tape; this will be ok to use
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# Else check if it is the oldest tape we used previously; this will be ok as well
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# Else we will abort and send a mail...
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if [ "$(ls -A ${TAPE_FILE} 2> /dev/null)" ]; then
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# We found an existing file. Now we check if it is the oldest file in our log-folder.
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if [ $TAPE_OLDFILE != $TAPE_SERIAL.log ]; then
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mail -s "Backup - ${BACKUP_NAME} - invalid tape" $MAIL <<EOM
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Hi Admin,
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the inserted tape is not a valid one because it was used before and is not the oldest
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tape in the current backup-set.
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inserted serial : ${TAPE_SERIAL}
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oldest used serial: ${TAPE_OLDFILE%.log}
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Please remove the old serial logfile or use another tape.
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Best regards,
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backup-script
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EOM
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exit 1
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fi
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fi
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touch $TAPE_FILE
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# rewind this tape (just to be sure)
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MESSAGE="$(mt -f /dev/nst0 rewind)"
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# do the backup
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# Something wrong here... MESSAGE="$(tar -c -f - ${SOURCE_FOLDER} &> ${LOGFILE} | mbuffer -q -L -s 256k -m 1G -P 95 -o ${LTO_DEV})"
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MESSAGE="$(tar -c -f - ${SOURCE_FOLDER} | mbuffer -q -L -s 256k -m 1G -P 95 -o ${LTO_DEV})"
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#echo "tar -c -f - ${SOURCE_FOLDER} | mbuffer -L -s 256k -m 1G -P 95 -o ${LTO_DEV}"
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ERROR_CODE=$?
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if [ $ERROR_CODE -ne 0 ]; then
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mail -s "Backup -${BACKUP_NAME}- exited with error(s)" -a $LOGFILE $MAIL <<EOM
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Hi Admin,
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the backup for $SOURCE_FOLDER exited with error code $ERROR_CODE. Please check on addtional actions. Detailed output:
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$MESSAGE
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Best regards,
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your backup-script
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EOM
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else
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mail -s "Backup -${BACKUP_NAME}- was successful" -a $LOGFILE $MAIL <<EOM
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Hi Admin,
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the backup for $SOURCE_FOLDER went fine. Details at the of the mail.
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Please make sure to savely store the tape.
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Best regards,
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your backup-script
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---------
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$MESSAGE
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EOM
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fi
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