Re: Backup of OpenBSD to Linux box

[Paul de Weerd]

On Tue, Jun 16, 2015 at 02:29:55PM +0200, Paul de Weerd wrote:
| --- /etc/lnbackup.conf -----------------------------------------------
| DATESTRING="%Y%m%d"
| STOREPREFIX="/backup/HISTORY/daily"
| BACKUPPREFIX="/backup/machines"
| KEEPCOPIES=190
| KEEPCOPIES=120
| #!/bin/sh
| # lnbackup: create historic backups of the backup directories
| ######################################################################
<---SNIP--->

Something went wrong here.  I included two files, the script and its
configuration file.  Looks like the mailinglist mangled my mail
somehow (the mail is correct in my sent-folder, and hopefully also
arrived correctly for Bernd).

Cheers,

Paul 'WEiRD' de Weerd

The configuration file:

--- /etc/lnbackup.conf -----------------------------------------------
DATESTRING="%Y%m%d"
STOREPREFIX="/backup/HISTORY/daily"
BACKUPPREFIX="/backup/machines"
KEEPCOPIES=190
KEEPCOPIES=120
----------------------------------------------------------------------

The script:

--- /usr/local/libexec/cronjobs/lnbackup -----------------------------
#!/bin/sh
# lnbackup: backup users' homedirs with rsync
######################################################################

PATH=/bin:/usr/bin:/usr/local/bin
CONFIG="/etc/lnbackup.conf"

if [ -f ${CONFIG} ]
then
        . ${CONFIG}
else
        echo Configuration file \(${CONFIG}\) not found >&2
        exit 1
fi

NOW=$(date +${DATESTRING})
COUNT=0

if [ ! -r ${USERSFILE} ]
then
        echo Users file not found \(${USERSFILE}\) >&2
        exit 2
fi

if [ -f ${STOREPREFIX}/.RUNNING ]
then
        PID=$(cat ${STOREPREFIX}/.RUNNING)
        echo Previous instance still running \(${PID}\) >&2
        exit 3
fi

echo ${$} > ${STOREPREFIX}/.RUNNING

if [ -f ${STOREPREFIX}/PREVIOUS ]
then
        PREVIOUS=$(cat ${STOREPREFIX}/PREVIOUS)
else
        PREVIOUS='0'
fi

if [ ${NOW} = ${PREVIOUS} ]
then
        echo Backup runs too soon \(${PREVIOUS}\) >&2
        exit 4
fi

for USER in $(cat ${USERSFILE})
do
        SRC=${BACKUPPREFIX}/${USER}/

        if [ ! -d ${SRC} ]
        then
                echo Source not found \(${SRC}\) >&2
                exit 5
        fi

        DST=${STOREPREFIX}/${NOW}/${USER}

        mkdir -p ${DST}

        PREVDIR=${STOREPREFIX}/${PREVIOUS}/${USER}

        if [ -d ${PREVDIR} ]
        then
                rsync -aHx --link-dest=${PREVDIR} ${SRC} ${DST}
        else
                rsync -aHx ${SRC} ${DST}
        fi
done

echo ${NOW} > ${STOREPREFIX}/PREVIOUS
rm ${STOREPREFIX}/.RUNNING

for BACKUP in $(ls ${STOREPREFIX} | grep -v PREVIOUS | tail -r)
do
        SB=${STOREPREFIX}/${BACKUP}
        YRLY=${STOREPREFIX}/../yearly
        MNLY=${STOREPREFIX}/../monthly

        COUNT=$((COUNT + 1))

        if [ ${KEEPCOPIES} -lt ${COUNT} ]
        then
                if [ ${BACKUP##????} = '0101' ]
                then
                        mv ${SB} ${YRLY}
                        continue
                fi
                if [ ${BACKUP##??????} = '01' ]
                then
                        mv ${SB} ${MNLY}
                        rm -rf ${MNLY}/$((BACKUP-10000))
                        continue
                fi
                rm -rf ${SB}
        fi
done
----------------------------------------------------------------------

-- 
>++++++++[<++++++++++>-]<+++++++.>+++[<------>-]<.>+++[<+
+++++++++++>-]<.>++[<------------>-]<+.--------------.[-]
                 http://www.weirdnet.nl/