On Wednesday 14 March 2007, Stanislav Brabec wrote: > Albert Lee wrote: > > Tejun Heo wrote: > > > > Hmmm... weird. Your drive bears the same model name as Stanislav's. I > > > don't think the low level driver is causing the difference. They both > > > use the standard libata HSM implementation. Any ideas? Stanislav, can > > > you try to connect that zip drive to another IDE controller? > > > Maybe it's also worth a try to replace the medium, cable or even the > > drive itself to rule out the possibility of hardware problem. > > I'll try it. I cannot replace the drive, I don't have any spare one, but > my colleague has. He will try it on his machine. So let's wait for > result. > > Looking at the syslog in Novell bug 232086 in detail, following line may > indicate hardware failure: > usb 5-1: string descriptor 0 read error: -22 > > My drive is a slave on bus, where master is a modern Seagate ST3160812A. > > On my system I see two regressions: > - One between year 2002 kernels and SuSE Linux 10.0: > Delay with "packet command initiated yet DRQ isn't asserted" before > first read access, then the read will succeed. > I did not yet reproduce this regression just now on my hardware. > - Second between SuSE 10.1 and 10.2: > Delay with "packet command initiated yet DRQ isn't asserted" before > any attempt to access, then it will fail. > This regression is reproducible just now on my hardware, but still may > be caused by hardware problems raised by a slightly different > initialization order. It is reproduceable, SuSE 10.1 kernel is "good" and SuSE 10.2 is "bad". So even if this is caused by some hardware problems or different initialization order git-bisect on 2.6.16-2.6.20 should tell us what change caused the problem. PS Tejun, I praise efforts to make ATA floppy drives work with libata but this is IMO a _future_ work (won't help et all for existing systems/distributions) and we need to have ide-floppy fixed _now_. Bart > Tejun Heo wrote: > > [libata] > > And, as the device requires custom high level driver, libata fails > > miserably. Would it be worth to try support these devices? Or are > > they just too outdated to put the effort in? > > As far as I remember, it was working without any special driver with > ide-scsi. > > -- > Best Regards, > > Stanislav Brabec > software developer > --------------------------------------------------------------------- > SUSE LINUX, s. r. o. e-mail: sbrabec@xxxxxxx > Lihovarska 1060/12 tel: +420 284 028 966 > 190 00 Praha 9 fax: +420 284 028 951 > Czech Republic http://www.suse.cz/ - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
