linux-kernel - Re: ata1: spurious interrupt (irq_stat 0x8 active

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Date:	Wed, 03 Jan 2007 13:15:38 +0900
From:	Tejun Heo <htejun@...il.com>
To:	bbee <bumble.bee@...all.nl>
CC:	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: ata1: spurious interrupt (irq_stat 0x8 active_tag -84148995 sactive
 0x0) r0xj0

bbee wrote:
>> Yeap, I have major issues with SDB FISes which contains spurious
>> completions but most other spurious interrupts shouldn't be dangerous
>> and I haven't seen spurious completions for quite some time, so I was
>> thinking either removing the message or printing it only on SDB FIS
>> containing spurious completions.
>>
>> But, Andrew Lyon *is* reporting spurious completions.  Now I just wanna
>> update those printks such that more info is reported only on spurious
>> SDB FISes.
> 
> That would certainly help verify that I'm having the exact same problem,
> since Andrew didn't say anything about his drive going offline.

Okay.

[--snip--]
> I reverted the patch and am waiting for the exception while running
> "stress --io 2 --hdd 2". By past experience, it could take a while; I am
> already seeing the spurious iterrupt messages though.

Thanks, please keep me posted.

>> Can you post the results of 'dmesg' and 'hdparm -I /dev/sdX'?
> 
> Follows at end of message (md init snipped from dmesg for brevity).
> 
>> Yeap, I'm definitely interested in resolving this problem.  It's not
>> likely but possible that the *controller* is responsible for spurious
>> interrupts.
> 
> Unfortunately I don't have any other model of SATA drive to test it
> with, but Andrew by his dmesg seems to be using a different brand of drive.
> ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> ata1.00: ATA-7, max UDMA/100, 586072368 sectors: LBA48 NCQ (depth 31/32)
> ata1.00: ata1: dev 0 multi count 16
> ata1.00: configured for UDMA/100
> scsi 0:0:0:0: Direct-Access     ATA      Maxtor 6V300F0   VA11 PQ: 0
> ANSI: 5

Yeah, a different drive.  I'll ask around.  Thanks.

-- 
tejun
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