Date: Sun, 26 Jun 2005 18:30:27 GMT From: Salvo Bartolotta <bartequi@neomedia.it> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/77753: DVD-writer fails to fixate DVD Message-ID: <200506261830.j5QIUReg089342@freefall.freebsd.org>
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The following reply was made to PR kern/77753; it has been noted by GNATS. From: Salvo Bartolotta <bartequi@neomedia.it> To: bug-followup@FreeBSD.org, yuri@tsoft.com Cc: Subject: Re: kern/77753: DVD-writer fails to fixate DVD Date: Sun, 26 Jun 2005 20:23:17 +0200 Hello FreeBSD (de)buggers, I am not sure whether I should (also?) reply to bin/63319, anyway here it goes: mathesis% ~ 7:34pm 101 % ===> dmesg | grep acd acd0: DVDROM <LITE-ON DVD SOHD-167T/9S19> at ata0-master UDMA33 acd1: DVDR <HL-DT-ST DVDRAM GSA-4163B/A103> at ata1-master UDMA33 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Yep, I happened to buy an, er, "el cheapo" LG DVD burner. :-) BTW, my settings are: mathesis% ~ 7:37pm 102 % ===> sysctl hw.ata hw.ata.ata_dma: 1 hw.ata.wc: 1 hw.ata.atapi_dma: 1 burncd, as far as I can see, does NOT work properly. I burnt the 6.0-CURRENT-SNAP004-i386-disc1.iso and 6.0-CURRENT-SNAP004-i386-disc2.iso via the (standard) command burncd -v -f /dev/acd1 -s max data <name_of_image> fixate As a result, I got a "fixate" error (input/output). The CDs, apparently, couldn't be mounted; yet I was able to mount them *after* ejecting them (there is another PR about this very behavio(u)r, but... wait and see). A recursive diff between the files (i.e. 6.0-CURRENT-SNAP004-i386-disc1.iso and 6.0-CURRENT-SNAP004-i386-disc2.iso mounted via mdconfig(8)) and the related CDs just burnt showed that, for each CD, there WERE (few) differences (e.g. src/scontrib.ay and other regular files do differ). In other words, burncd, for some reason, seems to burn, albeit in few cases, *wrong* bits. At this point, I decided to go the "atapicam" route. mathesis% ~/freebsd 8:01pm 112 % ===> grep cd /var/run/dmesg.boot acd0: DVDROM <LITE-ON DVD SOHD-167T/9S19> at ata0-master UDMA33 acd1: DVDR <HL-DT-ST DVDRAM GSA-4163B/A103> at ata1-master UDMA33 cd0 at ata0 bus 0 target 0 lun 0 cd0: <LITE-ON DVD SOHD-167T 9S19> Removable CD-ROM SCSI-0 device cd0: 33.000MB/s transfers cd0: Attempt to query device size failed: NOT READY, Medium not present cd1 at ata1 bus 0 target 0 lun 0 cd1: <HL-DT-ST DVDRAM GSA-4163B A103> Removable CD-ROM SCSI-0 device cd1: 33.000MB/s transfers cd1: Attempt to query device size failed: NOT READY, Medium not present While cdrecord did issue a (harmless) warning (the drive indicated a "wrong" start), it burnt both the ISO images properly: a recursive diff showed no actual differences (except for few non existing files -- certain symlinks -- in the CDs and the related images, which I think is immaterial here). So far so good. I can burn, it seems, (data) CDs via SCSI emulation -- more rant probably to come in the next few days. :-) Helas, I am afraid I am not in a position to help with the burncd malfunction. Perhaps this information will be of help to those in the know. -- Salvo
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