Date: Wed, 31 Dec 2003 00:44:12 +0200 From: Lefteris Chatzibarbas <lefcha@hellug.gr> To: Soren Schmidt <sos@spider.deepcore.dk> Cc: freebsd-current@freebsd.org Subject: Re: burncd(8) CD-RW blanking problem Message-ID: <20031230224412.GA10958@bsd> In-Reply-To: <200312092008.hB9K80SK092613@spider.deepcore.dk> References: <20031209143426.GA19683@igloo.linux.gr> <200312092008.hB9K80SK092613@spider.deepcore.dk>
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On Tue, Dec 09, 2003 at 09:08:00PM +0100, Soren Schmidt wrote: > It seems Lefteris Chatzibarbas wrote: > > > I'm seeing this too. What's odd is that my cd drive is reporting back > > > incorrect sense information; the valid bit is not set, the asc/ascq is > > > suspect (4/8), and the sense key specific data is all 0. Since other > > > fields in the sense data are reasonable, it's not as if no sense data is > > > being returned at all. So it looks like the CDRIOGETPROGRESS ioctl > > > handler is doing the right thing, but the cd drive is not. Maybe the > > > driver is doing something wrong when it issues the erase command, but > > > I can't convince myself that that is likely. > > > > The attached patch seems to correct the problem (at least for me). It > > is similar to what was done in revision 1.137 of sys/dev/ata/atapi-cd.c > > (this has been changed since revision 1.138). > > Uh oh, that code breaks on lots of newer drives, especially DVD writers > and drives of SONY origin. There was a reason that code was removed :) I guess those DVD writers do not return EBUSY, and burncd returns before the drive has finished blanking? Are CD-R(W) drives, like my TEAC CD-W524E, buggy, not returning correct sense information (progress)? Or is it a -maybe hard to find- software bug? Should I file a PR? Thanks a lot for answering any of these questions... PS. I added the atapicam driver to the kernel, and I now use cdrecord for the job...
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