Re: growisofs failing on some iso files

On 04/13/2012 09:41 PM, Thomas Schmitt wrote:
> You may ask cdrskin to print a table-of-content from MMC commands:
>
>    cdrskin dev=/dev/sr0 -minfo
>
> which should yield something like
>    Track  Sess Type   Start Addr End Addr   Size
>    ==============================================
>        1     1 Data   0          138420     138421

This is exactly what I got, so cdrskin seems to work as expected.

> Well, some might be able. But i know of nobody who would be willing.
> cdrkit team is hardly a candidate due to lack of manpower already for wodim.
>
> If a growisofs-devel group forms, then i would be willing to join
> and help. But not as somebody who decides. That would be a conflict
> of interest. I want my own stuff to be used, but i still owe growisofs
> some favors.

I understand and appreciate that you're willing to help.

I'd like to see restoring of dvd+rw-tools project development in the 
future. However, I'll doubtfully find enough time to fill in the missing 
"burning" knowledge and maintain the project by myself, but I'll think 
about this.

> Wow. That's a collection of several different problems.
> Growing since years.
>
> Very funny are the many "the same error" statements.
> (All problems are the same. But some are more same than others.)

Thanks for the comments, I forwarded potential readers of that report to 
your answers in this mailing-list archive.

>> https://bugzilla.redhat.com/show_bug.cgi?id=807474
> Do you see a text "reserving ... blocks" in that bug report ?

No, but I expect it was there and was removed together with other parts 
of the output.

> In the growisofs messages of above thread i see the session size
> reported at the start of the growisofs run:
>
>   Executing 'builtin_dd if=/dev/fd/0 of=/dev/scd1 obs=32k seek=0'
>   /dev/scd1: engaging DVD-R DAO upon user request...
>   /dev/scd1: reserving 2020809 blocks
>   /dev/scd1: "Current Write Speed" is 8.2x1352KBps.
>      622592/4138616832 ( 0.0%) @0.0x, remaining 443:05 RBU 100.0% UBU   5.0%

And it also depends on the media type, I see the "reserving XX block" 
message when using DVD-RW:

$ growisofs -Z /dev/sr0=cdrom2-rhel.iso
Executing 'builtin_dd if=cdrom2-rhel.iso of=/dev/sr0 obs=32k seek=0'
/dev/sr0: FEATURE 21h is not on, engaging DAO...
/dev/sr0: reserving 138421 block, warning for short DAO recording
/dev/sr0: "Current Write Speed" is 4.1x1352KBps.
     4947968/283486208 ( 1.7%) @1.1x, remaining 3:45 RBU 100.0% UBU   7.1%
...

But not when DVD-R or DVD+RW is used:

$ growisofs -Z /dev/sr0=cdrom2-rhel.iso
Executing 'builtin_dd if=cdrom2-rhel.iso of=/dev/sr0 obs=32k seek=0'
/dev/sr0: "Current Write Speed" is 4.1x1352KBps.
     4882432/283486208 ( 1.7%) @1.1x, remaining 4:45 RBU 100.0% UBU   7.1%
...

Cheers,

Honza


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