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Date:      Thu, 9 Sep 2010 16:15:48 -0700
From:      Matthew Fleming <mdf356@gmail.com>
To:        d@delphij.net
Cc:        Rob Farmer <rfarmer@predatorlabs.net>, Pawel Jakub Dawidek <pjd@freebsd.org>, freebsd-current@freebsd.org
Subject:   Re: System reboots building mysql51-client with ZFS v28
Message-ID:  <AANLkTikL3gPTztN9YfEYa_JDCUp1zp2-14v4CTbWXFqg@mail.gmail.com>
In-Reply-To: <4C896813.2040706@delphij.net>
References:  <AANLkTinKMxEGc6AQ=%2BO%2BauojVh%2B3yeP1tWC31aWtrzc=@mail.gmail.com> <4C8957F5.8010405@delphij.net> <AANLkTinOt=Yn3%2BN4vjAQ2RYUjbRq_QP7SryY3b-XBrky@mail.gmail.com> <4C895C53.2070602@delphij.net> <AANLkTinzBb0oZWWQS7=GEc4TuPSgQ06TWvN%2BJbMwmOAx@mail.gmail.com> <4C89609D.2070201@delphij.net> <4C896813.2040706@delphij.net>

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On Thu, Sep 9, 2010 at 4:04 PM, Xin LI <delphij@delphij.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> On 2010/09/09 15:33, Xin LI wrote:
>> On 2010/09/09 15:28, Rob Farmer wrote:
>>> On Thu, Sep 9, 2010 at 15:14, Xin LI <delphij@delphij.net> wrote:
>>>> -----BEGIN PGP SIGNED MESSAGE-----
>>>> Hash: SHA256
>>>>
>>>> Hi, Rob,
>>>>
>>>> On 2010/09/09 15:01, Rob Farmer wrote:
>>>> [...]
>>>>>> Just a guess - are you compiling under X? =A0If so what about if you
>>>>>> compile under text mode?
>>>>>
>>>>> Nope - this is a new install and X isn't running yet. It is installed=
,
>>>>> but not started yet. I ran across this building dependencies for KDE
>>>>> (why a desktop requires MySQL server is beyond me, but anyways).
>>>>
>>>> I just tried to compile MySQL 5.1 client but it passed on my test syst=
em
>>>> (the compile time option is slightly different as the VFS debugging is
>>>> not yet enabled). =A0I'll do another round of test with these VFS opti=
ons
>>>> enabled.
>>
>>> Ok - so I shut the system down for about 15 minutes and then tried
>>> again and it worked.
>>
>>> So maybe it was heat or something - I had reproduced it about 5 times
>>> back to back at the exact same spot. I didn't think this laptop had
>>> cooling problems but I will keep a closer eye on it in the future.
>>
>> Oh... =A0If it's so reproducible like this way then I'm more inclined to
>> believe that it's a software issue. =A0I'll try to see if I can reproduc=
e
>> the problem myself anyways, thanks for letting us know :)
>
> Ok mine went through with these recommended debugging options.
>
> Note that on my kernel I have bumped FULLGRAPH_SBUF_SIZE to 131072 in
> /sys/kern/subr_witness.c. =A0I'm not sure if it's related but without tha=
t
> I used get a few panics in the past.

As of r212370 on CURRENT this is no longer necessary, as the
sbuf_printf() will drain to the sysctl struct.  The define and its use
are gone.

Thanks,
matthew



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