[NTLUG:Discuss] Software RAID woes

[Chris Cox]

Okay...I was wrong.  Seems that it likes to use the same irq.  Do you get the
boot messages or similar as described in the HOWTO??

Chris Cox wrote:
> 
> I could be wrong....but I'd say the shared irq is the problem.  You'll need
> to determine the irq's for the two controllers and then you may have
> to force the settings with boot parameters or something like that.
> 
> It may not solve all of the problems....but I think it's a start.
> 
> (I'm afraid much of the detail of how exactly to determine the irq's is
> left up to the reader....haven't tried it in other words)
> 
> Chris
> 
> Scott Ripley wrote:
> >
> ...snip
> >
> > The only thing I noticed out of the ordinary on the system is that the
> > ide2 and ide3 controllers are using the same "IRQ?". I'm not sure if
> > that is the right term, as it is set to 18.
> >
> > twin:~$ cat /proc/interrupts
> >            CPU0       CPU1
> >   0:      40712      26622    IO-APIC-edge  timer
> >   1:          2          1    IO-APIC-edge  keyboard
> >   2:          0          0          XT-PIC  cascade
> >   9:          0          0    IO-APIC-edge  acpi
> >  12:          8          4    IO-APIC-edge  PS/2 Mouse
> >  13:          1          0          XT-PIC  fpu
> >  14:       3750       1987    IO-APIC-edge  ide0
> >  15:         16          1    IO-APIC-edge  ide1
> >  16:         68         59   IO-APIC-level  eth0
> >  18:          7          7   IO-APIC-level  ide2, ide3
> > NMI:      67245      67245
> > LOC:      67254      67252
> > ERR:          0
> > twin:~$
> >
> > If someone could enlighten me to the ways of SMP IO-APICs (and all the
> > xtra IRQs) that would be great too. I'm an old school XT/AT guy, and
> > anything above 15 doesn't quite make sense to me. :) I'm sure they could
> > share the interrupt under normal circumstances, but would "simultanious"
> > access be a problem?
> >
> > Also, the software package I am using is mdtools V0.41. I have seen
> > mention of a renamed raidtools V0.90, but I have had no luck in finding
> > it. This too could be a problem.
> >
> > I have been looking at this all night. So, if any of this doesn't make
> > any sense I could just be tired.
> >
> > TIA,
> >
> > Scott
> >  _____________________________________  ___
> > /_____    ______________/  _________  \/  /\ Scott Ripley
> > \____/   /\___________/   /________/  /  / / sripley at cyberstation.net
> >     /   /__  ________/   /  _________/  /___________
> >    /   /  /_/  /  __/   /\  \  O| _ \  /  ___/  ___ \
> >   /   /  __   /  __/   / /\  \| |  _/ /  ___/     __/\
> >  /___/__/ /__/____/___/ /  \__\_|_|________/__/\__\_\/
> >  \___\__\/\__\____\___\/    \__\_\_\_______\__\/\__\
> >
> > _______________________________________________
> > http://ntlug.org/mailman/listinfo/discuss
> 
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