[Libburn-hackers] Re: libburn never finishes burning DVD image

Thomas Schmitt scdbackup at gmx.net
Tue Oct 27 01:37:32 CDT 2009


Hi,

David Mohr:
> I have a user who reports that burning a DVD image never finishes[1].
> $ cdrskin -v dev=/dev/dvd0 dvd.iso
> Current: DVD-R sequential recording
> Track 01: 2746 of 2746 MB written (fifo 100%) [buf 100%]  13.6x.
> cdrskin: thank you for being patient for 500 seconds

This seems indeed somewhat too long for half a
DVD-R. Is the drive blinking while the program
idles ?

I still have on my screen a run of xorriso with
DVD-R some days ago. Closing of track and session
lasted about 25 seconds.
The write method was not DAO, though, but the
equivalent of 
  cdrskin -v dev=/dev/dvd0 -tao dvd.iso

So option -tao would possibly show a different
behavior. (In libburn this is set via call
burn_write_opts_set_write_type(). Does xfburn
use burn_write_opts_auto_write_type() ?)


I started a blank run on one of my few DVD-RW
and will do a DAO burn run when that is done.
(Stupidly i did not order quick deformatting
and so i have to wait quite a while.)


> http://bugzilla.xfce.org/show_bug.cgi?id=5894
> > To stop burning I can only kill
> > xfburn and to release the DVD I can only
> > reboot the computer.

Ouch.
Did you try shell command "eject" ?
Or
  cdrskin --drive_not_o_excl dev=/dev/dvd0 -eject


> this is not a hardware issue because K3b in conjunction with cdrkit and
> growisofs doesn't have this problem. K3b burns and finishes the DVDs without
> any problems.

Possibly growisofs uses different parameters
when closing the session or possibly that was
not a DAO session. I will do some source code
reading.
Can you get me the exact growisofs command
out of K3B's debugging window ?


Have a nice day :)

Thomas



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