Date: Thu, 01 Nov 2007 00:32:17 -0700 From: Andriy Babiy <freebsdathome@shaw.ca> To: FreeBSD-questions <FreeBSD-questions@freebsd.org> Cc: Yuri <yuri@rawbw.com> Subject: Re: Getting errors writing large iso image to DVD (bug in atapi driver?) Message-ID: <cb23c5749842e.47291e91@shaw.ca> In-Reply-To: <1193848470.4728ae96f115f@webmail.rawbw.com> References: <1193848470.4728ae96f115f@webmail.rawbw.com>
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----- Original Message ----- From: Yuri <yuri@rawbw.com> Date: Wednesday, October 31, 2007 11:05 Subject: Getting errors writing large iso image to DVD (bug in atapi driver?) To: freebsd-questions@freebsd.org Cc: yuri@tsoft.com > 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@xxx.xxx.xxx:/usr/obj/usr/src/sys/GENERIC i386 Just a question: do both DVD disks and DVD writer have a maximum speed limit x16? I am asking because I experienced similar problem on TDK disks; in my case the speed limit was x8. The writer managed to successfully write some disks while failing on others. After I have limited speed to x4, all the disks were written successfully. It looks like when I go maximum, the disk quality is in question. Have you tried setting the speed limit below the maximum? HTH, Andriy
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