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Date:      Tue, 17 Mar 1998 15:16:20 +0900 (JST)
From:      Michael Hancock <michaelh@cet.co.jp>
To:        Karl Denninger <karl@mcs.net>
Cc:        current@FreeBSD.ORG, dyson@FreeBSD.ORG
Subject:   Re: WARNING WILL ROBINSON! Risk of severe filesystem damage suspected
Message-ID:  <Pine.SV4.3.95.980317151432.8814E-100000@parkplace.cet.co.jp>
In-Reply-To: <19980317000929.36464@mcs.net>

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Did you newfs /usr/obj?

On Tue, 17 Mar 1998, Karl Denninger wrote:

> No.  I removed the entire source tree and re-extracted it.  If that was the
> problem then there would be errors in the source files - there aren't.
> 
> --
> -- 
> Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin
> http://www.mcs.net/          | T1's from $600 monthly / All Lines K56Flex/DOV
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> 
> On Tue, Mar 17, 1998 at 02:55:42PM +0900, Michael Hancock wrote:
> > Is it possible that the previous kernel quietly trashed your disks and it
> > didn't manifest itself until after the last vm fix commit?
> > 
> > Regards,
> > 
> > Mike Hancock
> > 
> > On Mon, 16 Mar 1998, Karl Denninger wrote:
> > 
> > > ************ URGENT **************
> > > 
> > > I strongly advise that you *DO NOT* use -CURRENT as it sits at the 
> > > present time.
> > > 
> > > The kernel you build may do SEVERE damage to your filesystems.  
> > > 
> > > I am working on finding the commit which is causing this and will post to 
> > > the list as soon as I have identified it.  
> > > 
> > > This is not a trivial matter.  It is a very good thing indeed that I use a
> > > scratch disk for my /usr/obj area, or I would be really rather upset. :-)
> > > 
> > > The symptoms are random core dumps and other problems - but the underlying
> > > reason is that the filesystem has been trashed beyond belief!  
> > > 
> > > I unmounted the disk in question CLEANLY and found both partially truncated 
> > > and duplicate inodes all over it, along with severe internal file damage.
> > > 
> > > I suspect the commit today in kern/vfs_cluster.c, as that's the only
> > > filesystem or VM related commit that my first-level examination has found.
> > > I am backing that out locally right now and will advise if it makes the 
> > > problem go away.
> > > 
> > > Note that kernels built LAST NIGHT (3/15) at about 23:00 *do not* exhibit 
> > > the problem.
> > > 
> > > --
> > > -- 
> > > Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin
> > > http://www.mcs.net/          | T1's from $600 monthly / All Lines K56Flex/DOV
> > > 			     | NEW! Corporate ISDN Prices dropped by up to 50%!
> > > Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS
> > > Fax:   [+1 312 803-4929]     | *SPAMBLOCK* Technology now included at no cost
> > > 
> > > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > > with "unsubscribe freebsd-current" in the body of the message
> > > 
> > 
> > --
> > michaelh@cet.co.jp                                http://www.cet.co.jp
> > CET Inc., Daiichi Kasuya BLDG 8F, 2-5-12 Higashi Shinbashi, Minato-ku,
> > Tokyo 105 Japan              Tel: +81-3-3437-1761 Fax: +81-3-3437-1766
> > 
> 

--
michaelh@cet.co.jp                                http://www.cet.co.jp
CET Inc., Daiichi Kasuya BLDG 8F, 2-5-12 Higashi Shinbashi, Minato-ku,
Tokyo 105 Japan              Tel: +81-3-3437-1761 Fax: +81-3-3437-1766


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