On Monday 25 July 2005 18:44, Alan Brown wrote:
> After about 10 minutes, the tape was rewound and labelled.
>
> >> Either you are not waiting long enough after issuing the mtx load
> >> command, or you are not using one of the wait loops that are in the
> >> mtx-changer script. As a consequence, the mtx-changer script returns to
> >> Bacula *before* the tape is loaded and read, Bacula rewinds the drive,
> >> and gets an error.
>
> The script default is 15 seconds.
>
> Clearly this is long enough if the tape has something on the start, but
> not long enough if it's blank.
>
> I have changed this to 30 (this is the usual sleep I use when scripting
> the weof across 60 virgin tapes - it's this that I was trying to get
> around)
>
> I also looked at the wait_for_tape loop.
>
> IMO checking the drive every second is excessive.
> I've changed it to check every 10 seconds for 3 minutes.
>
> > The pause is long enough for cases where the virgin tape has a EOF
> > written to it or where the tape is labelled. I don't believe that's the
> > problem.
>
> But as it turned out, not long enough for a virgin tape.
>
> There muct be some difference ion the handling and loading of blank vs
> erased tapes on LTO2 drives.
>
> Can anyone else duplicate this?
Every time I load a tape in my DLT drive, it farbles around for about 2 or 3
minutes until it is happy with the tape. If I attempt any I/O during that
time, it will fail, and on older OSes, it can hang the program or hang the
OS.
To get a good answer, you probably need to ask a tape drive manufacturer.
--
Best regards,
Kern
(">
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