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From: David R <david@unsolicited.net>
To: Robert Hancock <hancockr@shaw.ca>
Cc: linux-kernel@vger.kernel.org
Subject: Re: sata_nv - ADMA issues with 2.6.20
Date: Sat, 10 Feb 2007 09:34:46 +0000	[thread overview]
Message-ID: <45CD91B6.5000709@unsolicited.net> (raw)
In-Reply-To: <45CD20DB.9030808@shaw.ca>

Robert Hancock wrote:

> So it was tag 0 that timed out , and according to the CPBs the
> controller indeed believes the command is still outstanding, i.e. we
> didn't lose an interrupt. I'm suspicious of the fact that only one of
> two identical drives produced this error.. some kind of hardware-related
> problem perhaps? 30 seconds is an awfully long time for a drive to take

That was my first thought. Maybe the drive has some fault that only shows up
with NCQ in use. I'll keep an eye on it.

> You can also try disabling NCQ without disabling ADMA and see what that
> does:
> 
> echo 1 > /sys/block/sdX/device/queue_depth

I'll give this a go when I next reboot.

Thanks
David



  reply	other threads:[~2007-02-10  9:34 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <fa.uoZWqSFxPjjB7zobQOwk/2zqG5A@ifi.uio.no>
2007-02-10  1:33 ` Robert Hancock
2007-02-10  9:34   ` David R [this message]
2007-02-11 19:55   ` Neil Schemenauer
2007-02-11 22:23     ` Björn Steinbrink
     [not found] <fa.4+EfmBKJuhLBKrzZ9Tr6IwbmP9o@ifi.uio.no>
     [not found] ` <fa.k0ZDYzgHEXJHC2/UddL2J4jq/kE@ifi.uio.no>
     [not found]   ` <fa.W/MKSda79+AG31HO6bl30nzW79o@ifi.uio.no>
     [not found]     ` <fa.skzjVxsBWVzk9Yzhsb2UIA1VDGY@ifi.uio.no>
2007-02-11 23:04       ` Robert Hancock
2007-02-09 21:11 David R

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