On Sun, Feb 14, 2010 at 8:16 AM, shouldbe q931
<shouldbeq...@googlemail.com> wrote:
> ooh, found this http://old.nabble.com/Bad-Autochanger-td15870476.html
> and following the advice in the 2nd post from John M. Drescher
>
> ----------------------------------
> If you believe the tape was successfully loaded in a slot then you
> need to customize the mtx-changer script.
>
> Look at the code
>
> # sleep 15
> wait_for_drive $device
> exit $rtn
> ;;
>
> I would comment out wait_for_drive and replace it with sleep 120. Turn
> on some debugging in the script so you can see what is happening.
> ----------------------------------
> edited mtx-changer, ran autochanger again, and
>
> *autochanger
>
> Ah, I see you have an autochanger configured.
> To test the autochanger you must have a blank tape
> that I can write on in Slot 1.
>
> Do you wish to continue with the Autochanger test? (y/n): y
>
>
> === Autochanger test ===
>
> 3301 Issuing autochanger "loaded" command.
> Slot 1 loaded. I am going to unload it.
> 3302 Issuing autochanger "unload 1 0" command.
> unload status=OK 0
> 3303 Issuing autochanger "load 1 0" command.
> 3303 Autochanger "load 1 0" status is OK.
> btape: btape.c:476 open device "Certance" (/dev/st0): OK
> btape: btape.c:1562 Rewound "Certance" (/dev/st0)
> btape: btape.c:1569 Wrote EOF to "Certance" (/dev/st0)
>
> The test autochanger worked!!
After that I would verify that the result is reproducible then try to
determine the reason for the failure of the following code:
wait_for_drive() {
i=0
while [ $i -le 300 ]; do # Wait max 300 seconds
if mt -f $1 status 2>&1 | grep "${ready}" >/dev/null 2>&1; then
break
fi
debug "Device $1 - not ready, retrying..."
sleep 1
i=`expr $i + 1`
done
}
What this does is loops calling mt -f /dev/nst0 status
and looks at the output for "ONLINE". If it finds "ONLINE" anywhere in
the output it exits the loop otherwise it loops for a maximum of 300
seconds.
So the first step in fixing this for your system would be to
mount a volume via the autochanger web interface and
look at the output of
mt -f /dev/nst0 status
Does it output "ONLINE" in anywhere status after a tape is loaded?
John
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