143 lines
2.6 KiB
Bash
Executable File
143 lines
2.6 KiB
Bash
Executable File
#!/bin/bash
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### Config options ###
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INCREMENTAL="yes" # yes/no (yes for incremental backup, no for full backup)
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BACKUP_DIRS="/mnt/raid1/backups/weekly"
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DRIVE="/dev/st0"
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SNAPSHOT="/mnt/raid1/backups/weekly.snar" # If using incremental backups
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RECHECK_WAIT=1200
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MT="/bin/mt"
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TAR="/bin/tar"
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CP="/bin/cp"
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### Functions ###
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Do_full_backup()
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{
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sleep 15 # Wait for the tape to get ready...
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echo "Doing backup..."
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${TAR} -cf ${DRIVE} ${BACKUP_DIRS}
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echo "Backup done!"
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sleep 120 #Just in case wait for the tape drive
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${MT} -f ${DRIVE} offline
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exit 0
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}
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Do_inc_backup()
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{
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${CP} ${SNAPSHOT} ${SNAPSHOT}\-1
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sleep 15 # Wait for the tape to get ready...
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echo "Doing backup..."
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${TAR} -cf ${DRIVE} -g ${SNAPSHOT}\-1 ${BACKUP_DIRS}
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echo "Backup done!"
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sleep 120 #Just in case wait for the tape drive
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${MT} -f ${DRIVE} offline
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exit 0
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}
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Check_drive()
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{
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if [ ! -e ${DRIVE} ]; then
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echo "No drive connected" >&2
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EXIT_STATE=1
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elif [ -e ${DRIVE} ]; then
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echo "Drive connected, continuing"
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EXIT_STATE=0
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else
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echo "Unknown error" >&2
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EXIT_STATE=3
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fi
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}
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Check_tape()
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{
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TESTTAPE=`${MT} -f ${DRIVE} status | grep DR_OPEN`
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if [ $? == 0 ]; then
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echo "No tape in drive" >&2
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EXIT_STATE=1
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else
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echo "Tape seems to be in the drive, continuing"
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EXIT_STATE=0
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fi
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}
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Check_utils()
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{
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if [ ! -x ${MT} ]; then
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echo "Program ${MT} dosen't seem to exist..." >&2
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exit 1
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fi
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if [ ! -x ${TAR} ]; then
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echo "Program ${TAR} doesn't seem to exist..." >&2
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exit 1
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fi
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}
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Check_backupdir()
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{
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for dirtest in ${BACKUP_DIRS}; do
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if [ ! -d $dirtest ]; then
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echo "${dirtest} does not exist" >&2
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exit 1
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fi
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done
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}
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Check_snapshot()
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{
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if [ ! -e ${SNAPSHOT} ]; then
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echo "${SNAPSHOT} does not exist" >&2
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exit 1
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fi
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}
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### Main routine ###
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# Check if the utils/programs exists
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Check_utils
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# Check if the dirs we want to backup exists
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Check_backupdir
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# Check if the snapshot file exist (if running incremental backup)
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if [ ${INCREMENTAL} == "yes" ]; then
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Check_snapshot
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fi
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# Check and repeat until the tape drive is on/connected
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EXIT_STATE=3
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while [ ${EXIT_STATE} != 0 ]; do
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Check_drive
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if [ ${EXIT_STATE} != 0 ]; then
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sleep ${RECHECK_WAIT}
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fi
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done
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# Check and repeat until a tape is inserted
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EXIT_STATE=3
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while [ ${EXIT_STATE} != 0 ]; do
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Check_tape
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if [ ${EXIT_STATE} != 0 ]; then
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sleep ${RECHECK_WAIT}
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fi
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done
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# Finally, begin with the backup!
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if [ ${INCREMENTAL} == "yes" ]; then
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Do_inc_backup
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elif [ ${INCREMENTAL} == "no" ]; then
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Do_full_backup
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else
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echo "I don't know what to do, enter yes or no in $INCREMENTAL" >&2
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exit 1
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fi
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