[Pkg-opt-media-team] Bug#699186: dvd+rw-tools: growisofs, unformatted BD-R: Wrong estimate of available space for data

[Thomas Schmitt]

Hi,

(Thank you for flying xorriso.)

The problem seems to be in growisofs.c function builtin_dd()
which inquires by
        capacity = get_capacity (ioctl_handle);
before doing
        pwrite64_method = poor_mans_setup (ioctl_handle,
                                           outoff+tracksize);
which calls
            bd_r_format (cmd);

This implies that there is probably no overwrite check for unformatted
BD-RE either. I assume it would pass the tests by capacity being 0.


> I think not formatting by default, formatting without defect management or
> additional command line options would be against growisofs's design idea
> of getting the data onto disc easily and safely.

After four years of daily BD burning I still have to see an example of
true benefits with Defect Management. If you really need it then it fails.

But Andy wants it that way. Including -use-the-force-luke=spare:none
as option to disable BD-R formatting.
(I believe that xorriso's defaults and its command -format as_needed
 are slightly more easily and safely :))


Have a nice day :)

Thomas