USB Drive Controller Failure and Shared IRQ

[Net Llama!]

On Fri, 18 Feb 2005, Matthew Carpenter wrote:
> I used to consider myself pretty great with HW (back when we had to
> control everything).  Since PCI and auto-resource management came about
> I've kinda just let the machines do what they wanted to except where ISA
> was involved.
>
> I have had a machine that I've been trying to do a drive-backup from a
> SATA drive to a USB-attached drive (using RSYNC for offsite backup.
> Very slick).  All goes well for about an hour.  Then errors start

And those errors are??

> happening and the backup never completes.  A reboot is necessary for the
> drive to even be recongnized again.
>
> This same USB-drive and cable work flawlessly doing the same thing on
> several other machines.
>
> I thought it must be the USB controller built into the board.  So I
> bought another one and plugged 'er in.  Same results.  I just ordered a
> replacement Mobo and this morning I notice that IRQ 10 is being shared
> by (this information came from the BIOS boot-screen, not Linux):
> *) The USB controller on the Mobo
> *) The new USB controller (PCI)
> *) The SATA RAID Controller.
>
> Could this be causing my issues?  I would think that issues caused by
> shared-IRQ would occur next to immediately, and have far worse effects.

Hard to say for sure, since you didn't state what the errors were.  Most
motherboards will let you override the IRQ settings.  I suppose you could
try that.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lonni J Friedman                        netllama at linux-sxs.org
LlamaLand				http://netllama.linux-sxs.org