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Date:      Mon, 19 Sep 2011 21:13:53 +0200
From:      Thomas Vogt <freebsdlists@bsdunix.ch>
To:        Marius Strobl <marius@alchemy.franken.de>
Cc:        stable@freebsd.org
Subject:   Re: mpt0 timeouts with an intel SASUC8I controller
Message-ID:  <B1BE548E-5EEE-4B04-8DD3-5D16F1600E7C@bsdunix.ch>
In-Reply-To: <20110919190659.GA76654@alchemy.franken.de>
References:  <94E5E0D6-3062-44A2-8ED3-3C3D44FA7A09@bsdunix.ch> <20110919190659.GA76654@alchemy.franken.de>

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Hi Marius

On 19.09.2011, at 21:06, Marius Strobl wrote:

> On Mon, Sep 19, 2011 at 02:45:04PM +0200, Thomas Vogt wrote:
>> Hello
>> 
>> I've stability issue with my new intel SASUC8I [1] PCIe controller. It's a LSI 1068e based controller. After a few minutes with disk io (csup or scrub by example) my FreeBSD 8-stable (64bit) is "freezing" for a couple of minutes and I see a lot of error messages like:
>> 
>> Sep 17 03:10:03 gw kernel: mpt0: request 0xffffff80002bc3b0:48367 timed out for ccb 0xffffff00050a8000 (req->ccb 0xffffff00050a8000)
>> Sep 17 03:10:03 gw kernel: mpt0: request 0xffffff80002bbb40:48368 timed out for ccb 0xffffff0004f81800 (req->ccb 0xffffff0004f81800)
>> Sep 17 03:10:03 gw kernel: mpt0: completing timedout/aborted req 0xffffff80002bc3b0:48367
>> Sep 17 03:10:03 gw kernel: mpt0: completing timedout/aborted req 0xffffff80002bbb40:48368
>> Sep 17 03:10:03 gw kernel: mpt0: Timedout requests already complete. Interrupts may not be functioning
>> 
> 
> If this really is an issue with interrupts not getting delivered you
> could try whether disabling MSI/MSI-X by setting hw.pci.enable_msi=0
> and hw.pci.enable_msix=0 either on the loader prompt or via loader.conf
> works around it.

I already tried this. It didn't change anything. Same timeouts.

I also tried vfs.zfs.vdev.min_pending="1" and vfs.zfs.vdev.max_pending="1" in loader.conf without any positive change.

Regards,
Tom







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