Mauro Condarelli wrote:

Hi,
I asked this before, but no one answered, so I will try again :)

I am using a large (500G) external USB disk as backup media.
It performs reasonably, so no sweat.

Problem is:
Is there a way to do a pre-check to see if the drive is actually mounted
and, if not, just skip the scheduled backup?
It would be easy to put a do_not_backup file in the directory over which
I mount the remote.
I could then do a test to see if that file is present (no disk) or if it
is absent (something was mounted over it.
Unfortunately I have no idea where to put such a test in BackupPC!

Can someone help me, please?

Yes.

The way i do it in a usb drive scenario.......

Don't start backuppc at boot.

I posted on the list back in December.....

http://www.mail-archive.com/backuppc-users AT lists.sourceforge DOT 
net/msg08103.html

Related issue:
I would like to use a small pool of identical external HDs in order to
increase further security.
Aside from switching the disks round-robin with a certain time interval
(weekly?) is there anything else to be done to notify BackupPC it has a
new media to use? I guess not, but I would like someone to confirm this.

Hope that helps.

Regards,

Les

#!/bin/sh
#
# DESCRIPTION
#
#   Startup init script for BackupPC on Redhat linux.
#
# Distributed with BackupPC version 3.0.0, released 28 Jan 2007.
#
# chkconfig: - 91 35
# description: Starts and stops the BackupPC server

# Modified by Les Stott 19/3/07
# to suit automatically mounting and unmounting of an external usb drive
# when backuppc is installed on such a device.

MOUNTPOINT=/mnt/maxtor
DEVICE=/dev/sdc1

# Source function library.
if [ -f /etc/init.d/functions ] ; then
  . /etc/init.d/functions
elif [ -f /etc/rc.d/init.d/functions ] ; then
  . /etc/rc.d/init.d/functions
else
  exit 0
fi

RETVAL=0

start() {
    #
    # You can set the SMB share password here is you wish.  Otherwise
    # you should put it in the config.pl script.
    # If you put it here make sure this file has no read permissions
    # for normal users!  See the documentation for more information.
    #
    # Replace the daemon line below with this:
    #   
    #  daemon --user backuppc /usr/bin/env BPC_SMB_PASSWD=xxxxx \
    #                           /usr/local/BackupPC/bin/BackupPC -d
    #   
    echo -n "Mounting External Drive: "
    mount $DEVICE $MOUNTPOINT 2> /tmp/mounted
    RETVAL=$?
    if [ "`grep -q "already mounted" /tmp/mounted ;echo $?`" = "0" ];then 
    RETVAL=0
    fi   
    if [ "$RETVAL" = "0" ]; then 
    echo_success
    chmod 775 $MOUNTPOINT
    chgrp backuppc $MOUNTPOINT
    echo ""
      if [ -d "${MOUNTPOINT}/lost+found" ]; then
         echo -n "Starting BackupPC: "
         daemon --user backuppc /usr/local/BackupPC/bin/BackupPC -d
         RETVAL=$?
         echo
         [ $RETVAL -eq 0 ] && touch /var/lock/subsys/backuppc || \
            RETVAL=1
         return $RETVAL
      else
         echo "Possible Problem with mounted drive. No lost+found directory"
         echo "to indicate filesystem."
         echo -n "Starting BackupPC: "
         echo_failure
         echo "Possible Problem with mounted drive. No lost+found directory" | 
mail -s"${HOSTNAME} Problem with BackupPC and External Drive Mount" root
         echo ""
         umount -f $DEVICE
         exit 0
      fi
    else
    echo_failure
    echo ""
    echo -n "Starting BackupPC: "
    echo_failure
    echo "Could not mount drive." | mail -s"${HOSTNAME} Problem with BackupPC 
and External Drive Mount" root
    echo ""
    exit 0
    fi
}       

stop() {
    echo -n "Shutting down BackupPC: "
    killproc /usr/local/BackupPC/bin/BackupPC
    RETVAL=$?
    [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/backuppc
    echo ""
    echo -n "Unmounting Maxtor Drive: "
    umount -f $DEVICE
    if [ "$?" = "0" ]; then
      echo_success
      echo ""
    else
      echo_failure
      echo ""
    fi  
    return $RETVAL
}       

restart() {
    stop
    start
}       

reload() {
    echo -n "Reloading config.pl file: "
    killproc /usr/local/BackupPC/bin/BackupPC -HUP
    RETVAL=$?
    echo
    return $RETVAL
}       

rhstatus() {
    status /usr/local/BackupPC/bin/BackupPC
}

case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  restart)
        restart
        ;;
  reload)
        reload
        ;;
  status)
        rhstatus
        ;;
  *)
        echo "Usage: $0 {start|stop|restart|reload|status}"
        exit 1
esac

exit $?

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