linux-kernel - Re: Help interpreting AHCI failure messages

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Message-ID: <494F63F1.3020207@gmail.com>
Date:	Mon, 22 Dec 2008 18:54:57 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Andrew Lyon <andrew.lyon@...il.com>
CC:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Robert Hancock <hancockr@...w.ca>,
	Jeff Garzik <jeff@...zik.org>,
	IDE/ATA development list <linux-ide@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Xen-devel <xen-devel@...ts.xensource.com>,
	Gerd Hoffmann <kraxel@...hat.com>
Subject: Re: Help interpreting AHCI failure messages

Hello,

Andrew Lyon wrote:
>>>>> Furthermore, ata2 - which is sharing the same interrupt - seems to have
>>>>> managed to read the DVD drive's information, so something must be
>>>>> working.  But why is it failing for the disk?
>>>> Can you try irqpoll on it?
>>> Here's a log of a run where everything works initially, but then it
>>> starts to fail (about half way into the log).  ATA_DEBUG is enabled, so
>>> its pretty verbose.
>>>
>>> http://kraxel.fedorapeople.org/for-jeremy/xeni.log
>>>
>>> Does anything stand out?
>> Can you please exclude pata_acpi from the initrd and see whether
>> anything changes?
> 
> I have already tried using a kernel with pata_acpi disabled, it does not help.

There's a BUG messages in the log and several IRQ enable/disable
messages && once timeout happens on one of the ata port, the other one
begins to time out too.  I'm out of ideas and think this really needs
a look from someone who knows xen.  It doesn't seem to be a libata
problem at this point.

Thanks.

-- 
tejun
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