linux-kernel - Re: sata

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Date:	Mon, 14 Apr 2008 09:39:47 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Rich West <Rich.West@...mo.com>, Thomas Renninger <trenn@...e.de>
Cc:	Jeff Garzik <jeff@...zik.org>,
	Wander Winkelhorst <w.winkelhorst@...il.com>,
	linux-kernel@...r.kernel.org,
	Linux IDE mailing list <linux-ide@...r.kernel.org>
Subject: Re: sata_via

Hi,

On Sun, 2008-04-13 at 00:36 -0400, Rich West wrote:
> Rich West wrote:
> > Tejun Heo wrote:
> >> Jeff Garzik wrote:
> >>> Rich West wrote:
> >>>> I was only curious as to what turning off power management support 
> >>>> would buy with regard to the sata timeout issue.
> >>>
> >>>
> >>> ACPI is not only power management.  It is all the information your 
> >>> hardware conveys to your OS, about the setup and workings of your 
> >>> hardware.
> >>>
> >>> Without ACPI, non-PM things like SMP, laptop dock/undock, and many 
> >>> other gadgets fail to function (or are configured sub-optimally).
> >>>
> >>> ACPI sets up interrupt routing, and Linux history is _loaded_ with 
> >>> _years_ of problem reports that appear as timeouts, only to be 
> >>> resolved as ACPI interrupt bugs (aka BIOS bugs, since ACPI tables 
> >>> come from BIOS).
> >>
> >> Also, please give a shot at the sacred "irqpoll".
> >
> > I've had bad luck in the past (with other machiens) when adding 
> > "irqpoll" in that it had locked up the entire machine (not this one, 
> > but others) after a very short period of time.  My only attempt at 
> > using it, though, was to try to address an X server related issue, but 
> > this is a non-user machine, so X isn't necessary, and, hence, it's at 
> > runlevel 3 all of the time.
> >
> > So far, noapic and acpi=off seem to be working.. The system has been 
> > up 8 days without any problems.. previously, a problem with the SATA 
> > drive (details of which were part of the first few messages in this 
> > thread) would surface anywhere between 15 minutes and 5-7 days after a 
> > reboot.
> >
> > However, since I started this email, I tried firing up X (with noapci 
> > and acpi=off both set), the machine locks up entirely.
> 
> Although a reboot with irqpoll set managed to fix that X problem. :)
> 

IRQ routing seems hosed on your machine.  Thomas any ideas?

-- 
tejun

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