Re: DVD Writing
Many thanks for the reply.
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 "FATAL:
/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***
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 <firstname.lastname@example.org>, version 5.13,
front-ending to mkisofs: mkisofs 2.01a17 (i686-redhat-linux-gnu)
You are using the "-use-the-force-luke" switch. Without wanting to
appear totally stupid I can't find any description of this although it
clearly is accepted by my growisofs I still see the ISO file system
warning so I am assuming the CRON FATAL error too. What does it do ?
Thanks again for your help,
ps Sorry Thomas if I've broken with established protocol as I replied
earlier to your personal email, I am a bit new to mailing lists.
--- email@example.com wrote:
> > I've loaded the current DVD+RW-TOOLS package from Redhat and am
> > growisofs -dvd-compat -Z /dev/cdrom -r -J mytarfile.tar
> > to write the required tar to the DVD. All works fine from the
> > line but running under cron the command fails as it finds an
> > ISO9660 file system and wont automatically overwrite it.
> I got no such trouble.
> The differences in my and your usage of growisofs seem to be :
> - I use option -use-the-force-luke
> - I run mkisofs and growisofs separately in a pipe :
> mkisofs ... | \
> growisofs -use-the-force-luke -dvd-compat \
> -Z /dev/sr0=/proc/self/fd/0
> About cron : the shell environments used by cron often lack
> important variables. If you find no other reason for growisofs'
> refusal, maybe you put it into a script and prepend the full
> output of command env executed in a dialog shell.
> Have a nice day :)
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