Re: sata_mv 0000:03:06.0: PCI ERROR; PCI IRQ cause=0x30000040

[Bernie Innocenti <bernie@codewiz.org>]

El Tue, 06-10-2009 a las 23:13 -0400, Mark Lord escribió:
> Dunno.  Rev.9 == "C0" in Marvell terminology,
> and that's the latest/final rev for the 6081 chip,
> with most of the PCI-X bugs fixed or worked around.
> So not much to go on there.
> 
> The Bus error report was real, though.
> But with 3.0gb/sec sata connections, the chip will be
> using some different internal clocks and timings,
> which could be enough to avoid triggering the PCI errors.
> 
> I guess.  Let's hope so, anyway.

Our prayers have not been answered :-(

I tried several things:

 - Forcing all the 500GB Seagate drives to 3.0Gbps does not help

 - Replacing the 500GB drives with 1.5TB drives seems to make
   the PCI error much less frequent

 - Moving the controllers to different slots (on different busses)
   does not help

 - Happens with both 2.6.26 (from lenny) and 2.6.30 (from sid)

 - Unplugging one of the controllers appeared to lead to a stable
   configuration, but yesterday I left the machines reconstructing
   the arrays and this mornings one of them is not answering
   to pings ;-(

I want to try reducing the frequency of the PCI-X bus, but the BIOS does
not seem to provide a setting for it.  Is there another way?

-- 
   // Bernie Innocenti - http://codewiz.org/
 \X/  Sugar Labs       - http://sugarlabs.org/