Backup to a windows share

[alpheratz]

It can be done!

I have FW 1.00.09.

The key is /opt/samba/bin/smbclient (see online manuals [for instance]: www.hmug.org/man/1/smbclient.php):

/opt/samba/bin/smbclient -U ${UNAME}%${PASSWD} ${SHARE} \
   -c "put ${BACKUP} ${BACKUP_FILE}" 2>&1 > /dev/null

I am running the following script nightly under cron:

#!/bin/sh

# usage: backup.sh source share device

APPNAME=`basename $0 .sh`

LOG=/tmp/${APPNAME}.log

echo "${APPNAME}: running at `date`..." > ${LOG}

SOURCE=$1
SHARE=$2
DEVICE=$3
TMPDIR=/raid/data/LOCAL/tmp
BACKUP_FILE=`hostname -s`.${APPNAME}.`date +%Y-%m-%d-%H%M`.tar.gz
BACKUP=${TMPDIR}/${BACKUP_FILE}
UNAME=n5200
PASSWD=n5200

# check for source
if [ ! -d ${SOURCE} ]; then
 echo "${APPNAME}: ${SOURCE} not found; exiting" >> ${LOG}
 exit 1
fi

# is there a mounted USB device?
mount | grep -q ${DEVICE}
if [ $? -ne 0 ]; then
 echo "${APPNAME}: device ${DEVICE} not mounted; skipping local copy" >> ${LOG}
 SKIPLOCAL=true
fi
   
MOUNTPOINT=`mount | grep ${DEVICE} | cut -d' ' -f3`

# do we have a samba server out there?
/opt/samba/bin/smbclient -N -L ${SHARE} 2>&1 > /dev/null
if [ $? -ne 0 ]; then
 echo "${APPNAME}: could not access ${SHARE}; skipping smb copy" >> ${LOG}
 SKIPSMB=true
fi

if [ -n "${SKIPLOCAL}" -a -n "${SKIPSMB}" ]; then
 echo "${APPNAME}: can't find either local or remote destination; exiting" >> ${LOG}
 exit 1
fi

trap cleanup 0 1 2 3 6 15

cleanup() {
 echo "${APPNAME}: cleanup: rm -f ${BACKUP}" >> ${LOG}
 rm -f ${BACKUP}
 }
 
# create the file
( cd ${SOURCE}; tar zcf ${BACKUP} . ) 2>&1 > /dev/null

# copy to exernal USB Drive
if [ -n "${SKIPLOCAL}" ]; then
 echo "${APPNAME}: COPY to USB: SKIPPED" >> ${LOG}
else
 echo "${APPNAME}: COPY to USB: cp ${BACKUP} ${MOUNTPOINT}" >> ${LOG}
 cp ${BACKUP} ${MOUNTPOINT}
fi
 
# push to SMB server host
if [ -n "${SKIPSMB}" ]; then
 echo "${APPNAME}: SMB PUSH: SKIPPED" >> ${LOG}
else
 echo "${APPNAME}: SMB PUSH: /opt/samba/bin/smbclient -U ${UNAME}%${PASSWD} ${SHARE} -c \"put ${BACKUP} ${BACKUP_FILE}\"" >> ${LOG}
 /opt/samba/bin/smbclient -U ${UNAME}%${PASSWD} ${SHARE} \
   -c "put ${BACKUP} ${BACKUP_FILE}" 2>&1 > /dev/null
fi

echo "${APPNAME}: finished at `date`..." >> ${LOG}
 
exit 0


I put this script on the filesystem at /raid/data/LOCAL/bin (and I have also made the directory /raid/data/LOCAL/tmp).

I run this script under cron:

30 3 * * * /raid/data/LOCAL/bin/backup.sh /raid/data/alpheratz //mss-022c5f/n5200 /dev/sdc1

NB: it is necessary to edit the crontab in /app/cfg/crond.conf to ensure persistence across reboots, AS WELL AS to establish this line into the existing system via the command: crontab -e.

Note that this ALSO backs up to the USB disk on /dev/sdc1 (healthy paranoia at work here...)

I backup about 9Gb nightly with this.

There are actually a LOT of example scripts to do this sort of thing with smbclient on the 'net'...this is just mine, FYI.

Cheers,

Alph