Re: Getting errors writing large iso image to DVD (bug in atapi driver?)

Hi,

I often recognized that problem with cheap DVD from discounters. As long
as I used
DVD+RW's from Verbatim I didn't get those input/output errors. I noticed,
that cheap DVD's works with Windows and the same ISO File like a charme
but doesn't work with FreeBSD. Those errors with nasty DVD's were
reproducible
for me.
Christian


Yuri schrieb:
I am trying to write iso image to blank DVD-R.
Every time I try (with a new blank disk of course) I get this error:

4534108160/4691437568 (96.6%) @15.8x, remaining 0:10 RBU 100.0% UBU 53.1%
:-[ WRITE@LBA=21df50h failed with SK=3h/ASC=0Ch/ACQ=00h]: Input/output error
:-( write failed: Input/output error
/dev/pass0: flushing cache
/dev/pass0: updating RMA
/dev/pass0: closing disc

And dmesg says:
g_vfs_done():acd0[READ(offset=4290936832, length=65536)]error = 5
acd0: FAILURE - READ_BIG MEDIUM ERROR asc=0x11 ascq=0x05
g_vfs_done():acd0[READ(offset=4290936832, length=4096)]error = 5
acd0: FAILURE - READ_BIG MEDIUM ERROR asc=0x11 ascq=0x05
g_vfs_done():acd0[READ(offset=4290940928, length=65536)]error = 5

ISO file is very large, almost at the limit: 4691437568 bytes. (limit is
4700000000+tiny bit).
I use command 'growisofs -dvd-compat -speed=16 -Z /dev/cd0=my.iso' to write.
And my burner is brand new PIONEER DVD-RW DVR-112D 1.21. Burned only 5-6 DVDs yet.

Why would is such error be reproducible?
I vaguely remember that my old writer (Sony) had similar problem and particular
large iso images were reproducibly failing with the similar message.

Does this suggest that ATAPI driver has some bug?

Thanks,
Yuri

FreeBSD xxx.xxx.xxx 6.2-STABLE FreeBSD 6.2-STABLE #9: Tue Oct 2 01:27:22 PDT
2007 yuri@xxxxxxxxxxx:/usr/obj/usr/src/sys/GENERIC i386
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