On 8/4/2010 5:43 PM, Maria Mckinley wrote:
> On 8/3/2010 9:20 PM, Maria McKinley wrote:
>   >  >  It seems that part of the problem I have been having with backup is
> that
>   >  >  bacula is having communication problems with the autochanger. Bacula
>   >  >  tells the autochanger to load slot 3, but instead slot 2 is loaded:
> On some systems, (BSD?) slot numbers are expected to begin at zero.
> Bacula (and Linux) expect slot numbers to begin at one. When Bacula
> sends a command to the autochanger to load slot 1, it is expecting the
> first slot to be loaded. But on systems that number from zero, when you
> use mtx to load slot 1 it will actually load the second slot. This can
> be worked around by changing your autochanger script to subtract 1 from
> the slot number on a load command and add 1 to slot numbers for the
> loaded and list commands.
>
> I am running linux, but this sounds like it would fix the problem. It
> isn't clear to me what to change. Here is the relevant bit from my
> script (3 is the input argument for slots). I don't think I can just
> change the setup argument to slot=$3+1, but not entirely sure why not:

It is not the problem if you are running Linux. But it does look like 
the output of the mtx-changer script is not correct for the 'list' 
command. The excerpt from your mtx-changer script looks quite different 
from the one installed on my Linux system by Bacula 5.0.2. What version 
of Bacula are you using? What is the actual output of:

billie:~#  /usr/lib64/bacula/mtx-changer /dev/sg2 list


> # Setup arguments
> ctl=$1
> cmd="$2"
> slot=$3
> device=$4
> drive=$5
>
> debug "Parms: $ctl $cmd $slot $device $drive"
>
> case $cmd in
>      unload)
>         debug "Doing mtx -f $ctl unload $slot $drive"
> #
> # enable the following line if you need to eject the cartridge
> #     mt -f $device offline
> #     sleep 10
>         ${MTX} -f $ctl unload $slot $drive
>         ;;
>
>      load)
>         debug "Doing mtx -f $ctl load $slot $drive"
>         ${MTX} -f $ctl load $slot $drive
>         rtn=$?
> #
> # Increase the sleep time if you have a slow device
> # or remove the sleep and add the following:
> #     sleep 15
>         wait_for_drive $device
>         exit $rtn
>         ;;
>
>      list)
>         debug "Doing mtx -f $ctl -- to list volumes"
>         make_temp_file
> # Enable the following if you are using barcodes and need an inventory
> #     ${MTX} -f $ctl inventory
>         ${MTX} -f $ctl status>${TMPFILE}
>         rtn=$?
>         cat ${TMPFILE} | grep " Storage Element [0-9]*:.*Full" | awk
> "{print \$3 \$4}" | sed "s/Full *\(:VolumeTag=\)*//"
> #
> # If you have a VXA PacketLoader and the above does not work, try
> #  turning it off and enabling the following line.
> #     cat ${TMPFILE} | grep " *Storage Element [0-9]*:.*Full" | sed "s/
> Storage Element //" | sed "s/Full :VolumeTag=//"
> #
>         cat ${TMPFILE} | grep "^Data Transfer Element [0-9]*:Full
> (Storage Element [0-9]" | awk '{printf "%s:%s\n",$7,$10}'
>         rm -f ${TMPFILE}>/dev/null 2>&1
>         exit $rtn
>         ;;
>
>      loaded)
>         debug "Doing mtx -f $ctl $drive -- to find what is loaded"
>         make_temp_file
>         ${MTX} -f $ctl status>${TMPFILE}
>         rtn=$?
>         cat ${TMPFILE} | grep "^Data Transfer Element $drive:Full" | awk
> "{print \$7}"
>         cat ${TMPFILE} | grep "^Data Transfer Element $drive:Empty" | awk
> "{print 0}"
>         rm -f ${TMPFILE}>/dev/null 2>&1
>         exit $rtn
>         ;;
>
>      slots)
>         debug "Doing mtx -f $ctl -- to get count of slots"
>         ${MTX} -f $ctl status | grep " *Storage Changer" | awk "{print \$5}"
>         ;;
> esac
>
> thanks,
> maria
>
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