Re: growisofs should have a method for padding
> The 2.6 kernel's CD/DVD driver has the unfortunate propensity to read
> ahead past the end of a CD/DVD. It then reports an error, even if the
> actual read request was completely legitimate. See, for example,
Are there really such errors with DVD now ?
With CD there is an embarrassing tradition for that.
> The conventional work-around is to always pad when writing a CD/DVD.
> growisofs can burn a pre-mastered image. It would be nice if there was a
> way to ask it to add to this burn a specified amount of padding.
> The only way I know of accomplishing it is to actually pad the image
> file. Not very elegant or convenient. (It breaks any signature too.)
I pad my growisofs streams while filtering them
through a checksum program. It adds a checksum
tag and the usual 300 kB which i also pad to CDs.
Just being cautious, though. I never got reports
about real DVD read-ahead bugs.
> One suggestion: implement -pad and -padsize options.
Did you already try something like this ?
( cat imagefile ; dd if=/dev/zero bs=2K count=150 ) | \
growisofs -use-the-force-luke -dvd-compat -Z /dev/sr0=/proc/self/fd/0
> ... Essentially, it means that some options are not
> supported when growisofs is doing all the work itself.
growisofs forwards options of mkisofs but not
those of cdrecord.
mkisofs option -pad should be active by default
but this padding is added to the image file.
Have a nice day :)