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Re: DVD Writing

Upgraded to 5.21 which I believe to be the latest release.

Tried the -use-the-force-luke switch but still get a FATAL error when
running the growisofs command within a CRON job.

If I check the man page for 5.21 it still suggests that this is normal
behaviour, it doesn't give any clues as to how it might be overwridden.

For the time being I will have to stick to my dvd+rw-format work around
although I am not sure this is a good thing with DVD+RW disks.

Many thanks for help so far.
 --- scdbackup@gmx.net wrote: 
> Hi,
> > Many thanks for the reply.
> I'm trying to earn my christmas gifts.
> > I'm not sure it's an environment problem as the man page for
> growisofs
> > states in the notes:
> > 
> > *** Man page extract ***
> > If  the  media  already  carries isofs and growisofs is invoked
> with -Z
> > option non-interactively, e.g. through cron, it shall fail with
> > /dev/dvd  already carries isofs!" Note that only ISO9660 is
> recognized,
> > you can perfectly zap e.g. an UDF filesystem non-interactively.
> > *** Man page extract end***
> Now this i cannot find in  dvd+rw-tools-
> which is the current version at 
>   http://fy.chalmers.se/~appro/linux/DVD+RW/tools/?M=D
> > and this is exactly what I see. If I format the DVD first then the
> > problem is solved but there appears to be some concern over keep
> > formatting a DVD+RW.
> > 
> > I am using:
> > 
> > growisofs by <appro@fy.chalmers.se>, version 5.13,
> That is quite old. Nevertheless, Luke's Force should be worth
> a try. I once needed it with 5.2 (or was it 5.3 ?) and since
> then it does protect me.
> But it seems not to be necessary any more for that original
> purpose. It got new jobs, nevertheless.
> See the history at the beginning of 
>   http://fy.chalmers.se/~appro/linux/DVD+RW/tools/growisofs.c
> The man page of 5.21 says :
>        There're several  undocumented  options  commonly  denoted
>        with -use-the-force-luke prefix. Some of them serve debug­
>        ging  purposes.  Some  require  certain  knowledge   about
>        recording process or even OS kernel internals and as being
>        such can induce confusing behaviour. Some are to  be  used
>        in  very  specific  situations better recognized by front-
>        ends or automated scripts. Rationale behind leaving  these
>        options  undocumented  is  that  those few users who would
>        actually need to use them directly can as well consult the
>        source code or obtain specific instructions elsewhere.
> Well, one of my christmas wishes is -use-the-force-luke=noload
> working. I'm crossing fingers that Andy finds the
> time to read his mail.
> > ... I still see the ISO file system
> > warning so I am assuming the CRON FATAL error too. What does it do
> ?
> I would not bet on that. I always see this warning.
> All my growisofs runs are controlled by a script
> which itself pretends to be cdrecord ... at least as
> far as my backup program is concerned.
> I never noticed any attempt of growisofs to interact
> with me directly.
> Just give it a try and see what happens.
> If -use-the-force-luke helps with 5.13 or an upgrade 
> to 5.21 does, then please send a short note to 
> cdwrite@other.debian.org , too.
> Have a nice day :)
> Thomas

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