Messages in this thread |  | | Date | Wed, 4 Aug 2004 22:47:09 -0700 | From | Andrew Morton <> | Subject | Re: /dev/hdl not showing up because of fix-ide-probe-double-detection patch |
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Tupshin Harper1 <tupshin@tupshin.com> wrote: > > Tupshin Harper1 wrote: > > > I have an x86 setup with a large(9) number of ide hard drives. With > > 2.6.8-rc2, all of them show up (as a,b,d,e,f,g,h,i,j,k, and l), but on > > 2.6.8-rc2-mm1, the last one (hdl) does not show up, even though it's a > > slave on the same controller as hdk. Everything about the config is > > identical between the two. Is there some default limit or other > > restriction in the current mm kernels that's preventing that drive > > from showing up? I haven't tried any other recent mm kernels, so I > > don't know when this was introduced. > > > > -Tupshin > > Well, I found the source of the problem. Dmesg gives a "ignoring > undecoded slave" message, which is coming from the > fix-ide-probe-double-detection patch.
Ah, thanks for working that out.
Did you know that Cc: stands for "copy culprit"?
> Both /dev/hdk and /dev/hdl are the same model of hard drive, and > unfortunately, they both report that they are Model > M0000000000000000000, which triggers the double detection removal. > > Does anybody have a suggestion (besides maintaining my own kernel > without this patch)? Is the serial number settable? Is there a boot > param I can use? > > Also, what is in /proc/ide/hd?/identity besides serial number. The two > drives have very similar identity files, but they are slightly > different. Could that additional info be used to check for duplicates? > > -Tupshin > > ---snippet from dmesg--- > PDC20276: IDE controller at PCI slot 0000:00:0c.0 > ACPI: PCI interrupt 0000:00:0c.0[A] -> GSI 19 (level, low) -> IRQ 19 > PDC20276: chipset revision 1 > PDC20276: 100% native mode on irq 19 > ide4: BM-DMA at 0xdc00-0xdc07, BIOS settings: hdi:pio, hdj:pio > ide5: BM-DMA at 0xdc08-0xdc0f, BIOS settings: hdk:pio, hdl:pio > hdi: SAMSUNG SV8004H, ATA DISK drive > hdj: Maxtor 6Y250P0, ATA DISK drive > ide4 at 0xec00-0xec07,0xe802 on irq 19 > hdk: Maxtor 4R120L0, ATA DISK drive > hdl: Maxtor 4R120L0, ATA DISK drive > ide-probe: ignoring undecoded slave > ide5 at 0xe400-0xe407,0xe002 on irq 19 > > - > 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/ - 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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