From: dave@horsfall.org (Dave Horsfall)
Subject: [TUHS] Illumos )
Date: Wed, 7 Jan 2015 12:53:46 +1100 (EST) [thread overview]
Message-ID: <alpine.BSF.2.11.1501071248120.58880@aneurin.horsfall.org> (raw)
In-Reply-To: <CAC20D2PdYXD22Fqz=Eb5J4tMYsGwvx7ecV7ffTsTwqwekHk8Zw@mail.gmail.com>
On Tue, 6 Jan 2015, Clem Cole wrote:
> Also, for those of you that never saw Unix before fsck or before the
> work that Goble did at Purdue to get the write ordering down, you have
> no idea what it was like to put a file system back together.
Somewhere, deep in Minnie's bowels, is the article I wrote, explaining
exactly how to use icheck/ncheck/dcheck/clri etc. I'm told it's saved the
bacon of quite a few people (assuming it was savable at all).
> The sync;sync;sync stuff was because of the lack write ordering; but
> even with that, small file system corruptions where common.
It was drilled into us that the correct usage was:
# sync
# sync
# sync
This gives the disk buffers time to actually flush (the writes were merely
scheduled, and were asynchronous).
--
Dave Horsfall DTM (VK2KFU) "Bliss is a MacBook with a FreeBSD server."
http://www.horsfall.org/spam.html (and check the home page whilst you're there)
next prev parent reply other threads:[~2015-01-07 1:53 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-31 6:22 Larry McVoy
2014-12-31 9:28 ` Wesley Parish
2014-12-31 13:13 ` John Cowan
2014-12-31 17:42 ` Diomidis Spinellis
2014-12-31 20:32 ` Clem Cole
2014-12-31 20:36 ` Larry McVoy
2014-12-31 22:19 ` Jacob Ritorto
2014-12-31 22:42 ` Larry McVoy
2014-12-31 22:50 ` Larry McVoy
2015-01-01 1:17 ` Larry McVoy
2015-01-01 1:34 ` Erik E. Fair
2015-01-05 12:02 ` Tim Bradshaw
2015-01-05 17:04 ` Jacob Ritorto
2015-01-06 4:54 ` Andy Kosela
2015-01-06 11:10 ` Kurt H Maier
2015-01-06 15:37 ` Tim Bradshaw
2015-01-09 9:23 ` Jose R. Valverde
2015-01-06 21:58 ` Clem Cole
2015-01-06 22:02 ` [TUHS] pre-FSCK days Ronald Natalie
2015-01-07 1:53 ` Dave Horsfall [this message]
2015-01-07 16:26 ` [TUHS] Illumos ) Clem Cole
2015-01-07 18:32 ` scj
2015-01-16 8:40 ` [TUHS] sync; sync; sync; halt (was: Re: Illumos )) Tom Ivar Helbekkmo
2015-01-16 13:39 ` random832
2015-01-16 14:14 ` Brantley Coile
2014-12-31 9:46 ` [TUHS] Illumos ) arnold
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