Messages in this thread | | | Date | Sat, 01 Mar 2003 16:39:26 -0500 | From | Brian Davids <> | Subject | Re: ide-scsi -O3 runtime problem |
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Michael Buesch wrote: > Hi. > > I have recently played a little bit with some optimiziation-flags on > linux-2.4.20, linux-2.4.21-pre4 and linux-2.4.21-pre5 (I'm currently running > pre5). > Finally I could bring it to compile, but when I tried to mount a CD-ROM on the > shiny new system with the optimized kernel, mount simply said: > mount: /dev/scd0 is not a valid block device > > Then I tried to mount it via /dev/hdb (which is physically the same device, > but without ide-scsi) and it worked fine. > > Is it a known problem, that ide-scsi fails if the kernel is compiled with -O3 > ? > If you have any questions about my hardware and/or configuration, just ask. :)
It's not an -O3 problem, it's one with your .config... ;)
> CONFIG_BLK_DEV_IDECD=y
When you have that set, ide-scsi never gets a chance to see the CD-ROM drive as the native IDE driver grabs it first. Everything else relevant in the IDE and SCSI sections seem fine to my untrained eye... ;) So either change that to N, or at boot time you can pass "hdb=scsi" as one of the parameters and avoid recompiling.
Brian Davids
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