From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HTML_MESSAGE,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 3144 invoked from network); 5 Jul 2020 21:05:35 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 5 Jul 2020 21:05:35 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 7AF839C6B8; Mon, 6 Jul 2020 07:05:31 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 321A694588; Mon, 6 Jul 2020 07:04:37 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=ccc.com header.i=@ccc.com header.b="CLzqGBdQ"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id E8E6194588; Mon, 6 Jul 2020 07:04:33 +1000 (AEST) Received: from mail-qt1-f169.google.com (mail-qt1-f169.google.com [209.85.160.169]) by minnie.tuhs.org (Postfix) with ESMTPS id 6310193D46 for ; Mon, 6 Jul 2020 07:04:33 +1000 (AEST) Received: by mail-qt1-f169.google.com with SMTP id g13so27576457qtv.8 for ; Sun, 05 Jul 2020 14:04:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ccc.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=nI7Syjth3JO2YUR48oLIZ379GA496SOgr4C3hDt/MRY=; b=CLzqGBdQRhrFKhgODwwehnjaEHYVJjnfucPYVfHBYKpwunmeudxGRHB0QoO+BIikuz oNCVhyrqgo08NCvnpncmuvNWCAadts9kGDR5VjM1rbmKQwHcXdA9Njp2pPvg1zvQ3hTO jmHIKkpq55cbo+5dWfqwDo721/SsuJCyAyl7M= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=nI7Syjth3JO2YUR48oLIZ379GA496SOgr4C3hDt/MRY=; b=TvlP+RhFW04Dvkc0Qa3llXDrr5xr+W6VLr1iWnRR0ZZQuRgw1M/dZoydrwWXRoMnRu bqwfWI7XqGv/gpmZ40AOySaY3J0zrZGuduErsR++8MnxQzhaOJv3uRs05mjMCMURKLX9 GLUKUWn0y+5ZnPOQG5XoiEwnes/koPoWKVzLFM+3bhhyLHPUuudtElK8ch/VO6AobDc0 553WpiI47+tuSzBfzx1p9vwqf/3P1KhtHRq+JlJQ5w99/AF7CATKmuyZQ2mSxMIrHnLt 2u1YVJUgn+rZDdWIWpCPRRD3NUV5Z8WsG0fCKO8j+yysh6u8IPmPnbLTZBNx6YJ/WJAH kUuw== X-Gm-Message-State: AOAM532KnV/6bDhTjrcztNGxYbrNUOn5EMTvC6cUFpwUAAwLh1wk81L+ 1dABNTePK6jvAU8h6RzSWddxW3mcS6cYzKkLPmGQOwDiGVc= X-Google-Smtp-Source: ABdhPJwRL2uzsGBhZ4LjwioIQzMrGGA3FEn5yHo9sS6lZY+EKsvdbHKg1EJhVlmYqFrsmxD/EXabUgiqBHM0MwRFy0U= X-Received: by 2002:ac8:4509:: with SMTP id q9mr46522746qtn.119.1593983072356; Sun, 05 Jul 2020 14:04:32 -0700 (PDT) MIME-Version: 1.0 References: <4FC7FA55-5035-41A2-B52F-AE26DC8BED2C@planet.nl> <20200623140124.GR22291@mcvoy.com> <20200624193647.GB14302@mcvoy.com> <20200705144332.GR29318@mcvoy.com> In-Reply-To: From: Clem Cole Date: Sun, 5 Jul 2020 17:04:06 -0400 Message-ID: To: John Cowan Content-Type: multipart/alternative; boundary="000000000000ce614905a9b81ae9" Subject: Re: [TUHS] VFS prior to 1984 X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --000000000000ce614905a9b81ae9 Content-Type: text/plain; charset="UTF-8" On Sun, Jul 5, 2020 at 4:42 PM John Cowan wrote: > I always used the design principle "Write locally, read over NFS". > This was the basic idea of AFS. Originally, the CMU folks did whole file caching, but by AFS 4.0 time, they had a Locus token manager (think DLM) that scaled really well so partial caching was allowed. It actually made a small disk system possible. What tended to happen, on your first boot, of course, you had to fill /bin and lot of heavily used directories. But what happened is that your system quickly had only the files you really needed on the local disk. - the ones you were writing, and the few you used over and over. FWIW: I know a couple of people that still run it. I ran it until a few years ago when I switched NAS units just for cost reasons. --000000000000ce614905a9b81ae9 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


On Sun, Jul 5, 2020 at 4:42 = PM John Cowan <cowan@ccil.org> = wrote:
I always used the design principle "Write locally, read over = NFS".=C2=A0=C2=A0
This was the basic idea o= f AFS.=C2=A0 Originally, the CMU folks did whole file caching, but by AFS 4= .0 time, they had a Locus token manager (think DLM) that scaled really well= so partial caching was allowed.=C2=A0 It actually made a small disk system= possible.=C2=A0 What tended to happen, on your first boot, of course, you = had to fill /bin and lot of heavily used directories.=C2=A0 =C2=A0But what = happened is that your system quickly had only the files you really needed=C2=A0on the=C2=A0local disk. - the ones you were writing, and the= few you used over and over.

FWIW: I know a couple of people that still run it.=C2=A0 I ran it until a = few years ago when I switched NAS units just for cost reasons.
=
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