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Date:      Thu, 27 Apr 2006 20:37:02 -0700 (PDT)
From:      "Bradley W. Dutton" <brad-fbsd-stable@duttonbros.com>
To:        "Pawel Jakub Dawidek" <pjd@freebsd.org>
Cc:        freebsd-stable@freebsd.org, markus@freebsd.org
Subject:   Re: 6.1 prerelease graid3 livelock?
Message-ID:  <65294.67.169.82.217.1146195422.squirrel@uno.mnl.com>
In-Reply-To: <54892.67.169.82.217.1146176385.squirrel@uno.mnl.com>
References:  <62791.67.169.82.217.1145819073.squirrel@uno.mnl.com> <20060427065534.GI17000@garage.freebsd.pl> <20060427173550.GA22635@garage.freebsd.pl> <54892.67.169.82.217.1146176385.squirrel@uno.mnl.com>

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Well I don't know what was going on earlier but I reverted to good kernel,
synced my raid arrays (no longer degraded from the panics), then booted a
kernel with the second patch applied, this time no problems so far. I'll
let you know how things go after the box is running for a while.

Thanks,
Brad


> Ok, I had already installed and booted the first patch. I then rebuilt the
> kernel with the second patch. Trying to reboot from the first patch to the
> second resulted in a crash/panic on shutdown. I didn't capture the output
> from this. Once I booted the second patch the machine panics in the boot
> process, in short:
> /dev/raid3t/moviesf: clean,o 190615 free (19p11 frags, 23588 oblocks, 0.8%
> fralogy locked @ /usr/src/sys/geom/raid3/g_raid3.c:773.
> KDB: enter: panic
> [thread pid 35 tid 100030 ]
> Stopped at      kdb_enter+0x30: leave
>
> The text copied from the serial console was a little garbled, it did say
> something like:
> sx lock, geom topology locked...
>
> I did an "alltrace" at that point which I'll send seperately.
>
> Thanks,
> Brad
>
>
>> On Thu, Apr 27, 2006 at 08:55:35AM +0200, Pawel Jakub Dawidek wrote:
>> +> On Sun, Apr 23, 2006 at 12:04:33PM -0700, Bradley W. Dutton wrote:
>> +> +> Hi,
>> +> +>
>> +> +> I'm experiencing a sort of livelock on a 6.1 prerelease box. It
>> appears
>> +> +> all  of the IO related activity hangs but the box continues to do
>> +> +> routing/NAT/etc  for internet access from my other boxes. I can
>> usually
>> +> +> get the lockup to occur within about 12 hours of booting.
>> +>
>> +> Ok, I think I found it. Could you try this patch:
>> +>
>> +> 	http://people.freebsd.org/~pjd/patches/g_raid3.c.4.patch
>>
>> markus@ reported the livelock is still there, so please try this patch
>> instead:
>>
>> 	http://people.freebsd.org/~pjd/patches/g_raid3.c.5.patch
>
>
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