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Date:      Mon, 26 Aug 1996 14:05:12 -0600 (MDT)
From:      Nate Williams <nate@mt.sri.com>
To:        Joe Greco <jgreco@brasil.moneng.mei.com>
Cc:        nate@mt.sri.com (Nate Williams), michaelv@mindbender.serv.net, freebsd-isp@freebsd.org
Subject:   Re: Anyone using ccd (FreeBSD disk striper) for news
Message-ID:  <199608262005.OAA20286@rocky.mt.sri.com>
In-Reply-To: <199608262002.PAA01517@brasil.moneng.mei.com>
References:  <199608261910.NAA19448@rocky.mt.sri.com> <199608262002.PAA01517@brasil.moneng.mei.com>

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> > > What I want is a solution which postpones the writes until hell freezes
> > > over.  Or, better yet, doesn't do them at all.
> > 
> > Use MFS for your news spool partition. :)
> > 
> > You *have* to write them down sometime unless you have gigabytes of
> > battery backed memory.
> 
> Why?
> 
> Of what practical value or use is writing back data which will never be
> looked at?

Maybe I'm confused, but I see the discussion talking about ATIME writes,
and normal writes, and there being no distinction made between when you
are talking about one or the other.

> Think about it:  if you were to unmount your news spool and remount it -ro,
> nnrpd would continue to work just fine because NOTHING ever looks at the
> file atime value (which FFS can't/won't modify if you mount -ro)... and if
> the only reason you are doing an update is to write back the modified atime,
> what the hell is the value of doing the write?

POSIX compliancy. :)

I was under the impression that you didn't even want to write out the
actual data itself. :)



Nate



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