Re: Second case, check if cdrskin also has the problem (result: no)

Hi,

> wodim -multi -v speed=1 dev=/dev/sr1 /var/tmp/DVD+R/1st_session.iso
> ...
> Total size:     1822 MB (180:31.36) = 812352 sectors
> ...
> Errno: 5 (Input/output error), reserve track scsi sendcmd: retryable error
> CDB:  53 00 00 00 00 00 0C 65 40 00
> status: 0x0 (GOOD STATUS)

That's a RESERVE TRACK command with 0x000C6540 = 812352 blocks.
Hard to say why it fails.

wodim option -V would bring more insight into the SCSI command
sequence that preceeds the failed command.
(If you got a blank 20 cent media left.)


What do you get from the failed DVD+R DL when executing again
  dvd+rw-mediainfo /dev/sr1


> Then reload the disco, when trying to mount it I got the following in dmesg:
> [  907.261360] sr 2:0:0:0: [sr1] Sense Key : Illegal Request [current] 
> [  907.261368] sr 2:0:0:0: [sr1] Add. Sense: Logical block address out of
> range
> [  907.261377] sr 2:0:0:0: [sr1] CDB: Read(10): 28 00 00 00 00 00 00 00 01 00

Well, no data were written and thus none can be read.


> cdrskin/cdrskin -multi -v speed=1 dev=/dev/sr1 /var/tmp/DVD+R/1st_session.iso 
> ...
> Total size:     1586 MB (180:33.36) = 812352 sectors
> ...
> cdrskin: burning done

So far so good. The burn program did its job. But did drive and media ?

After mounting ithe DVD (e.g. at /mnt) can you read all data file content
without any i/o error message ?
E.g. by :

  tar cf - /mnt | wc -c


> To me it seems the problem is now solved. Conclusion: use cdrskin in
> place of wodim for DVD+R DL.

This confirms my own assessment that growisofs or libburn are the tools
to use for DVD multi-session.

Whether cdrecord is suitable for multi-session on DVD-R and DVD+R would
still have to be evaluated. It will hardly do multi-session on DVD+RW,
DVD-RAM, or formatted DVD-RW.


Have a nice day :)

Thomas


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