Messages in this thread | | | Date | Fri, 02 Dec 2005 11:32:52 -0500 | From | Bill Davidsen <> | Subject | Re: ide-cd doesn't replace ide-scsi? |
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Luke-Jr wrote: > On Monday 28 November 2005 21:03, you wrote: > >>Luke-Jr wrote: >> >>>Note: results are with 2.6.13 (-gentoo-r4 + supermount) and 2.6.14 >>>(-gentoo) I've been struggling with burning DVD+R DL discs and upgrading >>>the firmware on my DVD burner, and just today decided to rmmod ide-cd and >>>try using ide-scsi. Turns out it works... so is ide-cd *supposed* to >>>handle cases other than simple reading and burning or is this a bug? If >>>not a bug, should ide-scsi really be marked as deprecated? >>>Also, two bugs with ide-scsi: >>>1. On loading the module, it detects and allocates 6 SCSI devices for a >>>single DVD burner (Toshiba ODD-DVD SD-R5272); kernel log for this event >>>attached 2. On attempted unloading of the module, rmmod says 'Killed' and >>>the module stays put, corrupt. There was some kind of error in dmesg, but >>>it appears to have avoided syslog-- If I see it again, I'll save it. >> >>I think you may have the probe-all-LUNs set, and a CD burner which >>responds to more than one. That's one possible cause for this. > > > Yep, it was set. I'll try turning it off. > > >>Unfortunately using ide-cd still doesn't have the code set to allow all >>burning features to work if you are not root. Even if you have read+write >>there's one command you need to do multi-session which is only allowed to >>root. Works fine for single sessions, I guess that's all someone uses. > > > I'm pretty sure I tried doing everything as root days before I even considered > ide-scsi... In regards to firmware upgrades, I wouldn't expect non-root to be > allowed to, even with rw access.
Actually, a single session burn seems to work (I'm doing tests as soon as I get a compile of the latest kernel). What doesn't (or didn't) work is multisession, even with r/w "cdrecord -msinfo" fails, which is how you get the starting info for the next session. > > >>Haven't tried unloading the module, so I have no advice on that other than >>"don't do that." > > > Well, I had reasons... =p > The first time, I was going to switch back to ide-cd (for DMA), and the second > time was because the drive was stuck on Busy and I'm not sure of any (other?) > way to reset it without hotplugging the IDE power cable (which I'm sure isn't > a good idea and I don't want to risk).
I thought ide-scsi now did DMA, at least for data burns. Don't know about audio, I occasionally do an audio burn, but my main machine for burning uses ide-cd, so it's not an issue.
I saw a note somewhere about using capabilities on the cdrecord executable to allow the realtime sched to be set, but I don't seem to find it now. Maybe it was a question rather than an example :-(
-- bill davidsen <davidsen@tmr.com> CTO TMR Associates, Inc Doing interesting things with small computers since 1979 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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