Problems when writing DVDs with growisofs

[Meino Christian Cramer <Meino.Cramer@gmx.de>]

Hi,

The System
=========
Softwware:
Gentoo Linux (recent stable) with Linux kernel 2.6.17.3 (vanilla
source).
* growisofs by <appro@fy.chalmers.se>, version 6.1,
  front-ending to mkisofs: mkisofs 2.0 (i686-pc-linux-gnu)
readcd 1.11a15 (i686-pc-linux-gnu) Copyright (C) 1987, 1995-2001 Jörg Schilling
dd (coreutils) 5.94

Hardware:
1GB RAM
Athlon 64 X2 3800+
Asus Av8 motherboard
LG 4163B DVD/CD/DVDRAM burner



The problem:
Recordings from a DVB-T receiver were copied to a DVD+RW medium. The
files:

-r--r--r-- 1 mccramer users 1205874688 Jul  5 16:59 2006-04-02_20-15_Ice_Age.mpg
-r--r--r-- 1 mccramer users 1492150272 Jul  5 17:01 2006-06-27_22-15_Twister.mpg
-r--r--r-- 1 mccramer users 1754710016 Jul  5 17:04 2006-06-28_20-15_Final_Fantasy.mpg

Sum of all filesizes:       4452734976 

I wrote the files with varying parameter;

growisofs -Z /dev/hdd 2006-04-02_20-15_Ice_Age.mpg \
2006-06-27_22-15_Twister.mpg 2006-06-28_20-15_Final_Fantasy.mpg

and

growisofs -Z /dev/hdd 2006-04-02_20-15_Ice_Age.mpg \
2006-06-27_22-15_Twister.mpg 2006-06-28_20-15_Final_Fantasy.mpg -udf

and

growisofs -dvd-compat -Z /dev/hdd 2006-04-02_20-15_Ice_Age.mpg \
2006-06-27_22-15_Twister.mpg 2006-06-28_20-15_Final_Fantasy.mpg -udf 

None of the processes reports any error neither on user level nor in
the kernel log files.

After each process I ejected the medium and inserted it again and
mounted the medium first with "-t iso9660" and cat'ed all files 
to /dev/null.

Short before end an I/O-Error happens and was logged to the kernel log
file as:

 attempt to access beyond end of device
 hdd: rw=0, want=8388608, limit=8388604
 Buffer I/O error on device hdd, logical block 2097151
 attempt to access beyond end of device
 hdd: rw=0, want=8388612, limit=8388604
 Buffer I/O error on device hdd, logical block 2097152
 attempt to access beyond end of device
 hdd: rw=0, want=8388616, limit=8388604
 Buffer I/O error on device hdd, logical block 2097153
 attempt to access beyond end of device
 hdd: rw=0, want=8388608, limit=8388604
 Buffer I/O error on device hdd, logical block 2097151
 
Then I unmounted the medium and mounted again with "-t udf" where
appropiate (see above).

Again the cat-process failed as described above.

Then I umounted the device and uses dd to copy an image of the dvd to 
my harddisk:

dd if=/dev/hdd of=/tmp/dvd.iso

The processes reports no error neither on user level nor in
the kernel log files.

I mounted the image via loop-device and tried again to cat all files
to /dev/null which again fails as described above.

Then I used readcd to create an image of the dvd. Also this process
does not report any error.

I mounted the image via loop device and THIS time I was able to
retrieve all files. They were identical to the originals.


I am near desparation. I cannot find the reason for this
behaviour. Since I copy more valuable data as some dvb-t recordings to
DVD I would be happy to have a reliable scheme how to copy
successfully files to DVD+RW and other media.

Thank you very much in advance for any help !

Kind regards,
 Meino Cramer

PS: I tried to subscribe to this mailinglist, I was told, that a
conformation mail will be send to me. But no mail arrives me. So I am
unsubscribed yet and would be happy, if - when replying to this mail -
one could CC: me. Thanks!