Re: Burning and mounting written BDs

[Thomas Schmitt]

Hi,

i don't have time today for detailed analysis and experiments, but:

>  xorriso -outdev /dev/sr0 -for-backup -blank as_needed -speed 4b --map
>    ./bildebackup-2023/ /Bilder -commit -eject all -outdev /dev/sr0
> ...
> libisofs: FATAL : Image is most likely damaged. Calculated/written tree end
> address mismatch.
> libisofs: FATAL : Image is most likely damaged. Calculated/written image end
> address mismatch.

This is surely a bug in libisofs. (My apologies.)

Do not repeat the same run with other expensive media.

The problem is possibly a known bug that was fixed by release xorriso-1.5.6.
If so then it will vanish in your xorriso-1.5.4 if you omit -for_backup.
You may try whether -for_backup triggers the failure by repeating the run
with
  -outdev "stdio:/dev/null"
instead of
  -outdev /dev/sr0
The result will vanish as fast as it gets produced. The experiment would
only be about the final error message being emitted or not.

I will ask you to get and compile
  https://www.gnu.org/software/xorriso/xorriso-1.5.6.pl02.tar.gz
according to
  https://www.gnu.org/software/xorriso/README_xorriso
and to compare the success of your installed 1.5.4 and not-installed 1.5.6


Have a nice day :)

Thomas