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Date:      Mon, 16 Nov 1998 08:49:34 +1030
From:      Greg Lehey <grog@lemis.com>
To:        dg@root.com, Kirk McKusick <mckusick@mckusick.com>
Cc:        FreeBSD current users <FreeBSD-current@FreeBSD.ORG>
Subject:   Re: Today's -CURRENT dies with "ffs_blkfree: bad size"
Message-ID:  <19981116084934.B445@freebie.lemis.com>
In-Reply-To: <199811151504.HAA01894@root.com>; from David Greenman on Sun, Nov 15, 1998 at 07:04:16AM -0800
References:  <Pine.BSF.4.02.9811150813210.4788-100000@orion.webspan.net> <199811151504.HAA01894@root.com>

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On Sunday, 15 November 1998 at  7:04:16 -0800, David Greenman wrote:
>>> Anybody else seen this?
>>
>> Greg,
>>
>> I *BELIEVE* this is related to davids changes that he made 2-3 days ago I
>> think. Turning off a sysctl should work I just cant remember which one.
>> David can tell you though. I think it has to do with non standard block
>> sizes on FS's? I might be wrong.
>
>    vfs.ffs.doreallocblks=0 will disable the new code. We don't know what is
> causing this yet, but if someone could get a crash dump along with a kernel
> built with -g and make them available on freefall then Kirk McKusick will
> investigate.

Well, I have a dump and a -g kernel, but it'll take forever to get a
dump to freefall.  If Kirk's prepared to debug it locally, he's
welcome.  Otherwise be prepared for quite a delay.

Kirk, let me know.  The net connection here's adequate--send me a
master.passwd entry if you want to do it.

Greg
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