From: Daniel Phillips <phillips@phunq.net>
To: Rik van Riel <riel@redhat.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, linux-kernel@vger.kernel.org
Subject: Re: [ANNOUNCE] Ramback: faster than a speeding bullet
Date: Mon, 10 Mar 2008 20:28:29 -0800 [thread overview]
Message-ID: <200803102128.29826.phillips@phunq.net> (raw)
In-Reply-To: <20080310150116.72c9f583@bree.surriel.com>
On Monday 10 March 2008 12:01, Rik van Riel wrote:
> > Ext3 is only going to help you if the ramdisk writeback respects barriers
> > and ordering rules ?
>
> That could get ugly when ext3 has written to the same block multiple
> times. To get some level of consistency, ramback would need to keep
> around the different versions and flush them in order.
Ah, keep snapshots like ddsnap? Interesting idea. But complex, and
ramback will stay perfectly consistent so long as you don't pull the
plug on your UPS. I seem to recall that EMC has been peddling SAN
storage with similar restrictions for quite some time now.
Regards,
Daniel
next prev parent reply other threads:[~2008-03-11 4:28 UTC|newest]
Thread overview: 153+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-10 6:46 [ANNOUNCE] Ramback: faster than a speeding bullet Daniel Phillips
2008-03-10 7:51 ` Grzegorz Kulewski
2008-03-10 8:23 ` Daniel Phillips
2008-03-10 9:37 ` Alan Cox
2008-03-10 21:03 ` Lars Marowsky-Bree
2008-03-11 11:14 ` Daniel Phillips
2008-03-11 11:23 ` Lars Marowsky-Bree
2008-03-11 11:50 ` Daniel Phillips
2008-03-11 17:26 ` Chris Friesen
2008-03-11 19:56 ` Daniel Phillips
2008-03-11 20:53 ` Willy Tarreau
2008-03-12 8:17 ` Daniel Phillips
2008-03-12 14:41 ` Mike Snitzer
2008-03-13 20:34 ` Rik van Riel
2008-03-14 2:20 ` Daniel Phillips
2008-03-11 21:56 ` Lars Marowsky-Bree
2008-03-11 23:02 ` Daniel Phillips
2008-03-12 13:25 ` Benny Amorsen
2008-03-12 13:30 ` Alan Cox
2008-03-13 15:29 ` Benny Amorsen
2008-03-14 9:30 ` Pavel Machek
2008-03-14 11:07 ` Ric Wheeler
2008-03-14 11:41 ` Benny Amorsen
2008-03-14 12:12 ` Ric Wheeler
2008-03-14 12:56 ` Theodore Tso
2008-03-14 15:47 ` Ric Wheeler
2008-03-14 16:49 ` Theodore Tso
2008-03-14 17:04 ` Ric Wheeler
2008-03-14 18:03 ` david
2008-03-14 19:03 ` writeback cache dangers " Pavel Machek
2008-03-14 19:29 ` Theodore Tso
2008-03-13 9:15 ` Matthias Schniedermeyer
2008-03-11 23:30 ` Daniel Phillips
2008-03-13 13:27 ` Ric Wheeler
2008-03-13 19:02 ` Daniel Phillips
2008-03-13 19:12 ` Ric Wheeler
2008-03-13 19:38 ` Daniel Phillips
2008-03-11 4:23 ` Daniel Phillips
2008-03-10 9:22 ` Alan Cox
2008-03-10 19:01 ` Rik van Riel
2008-03-11 4:28 ` Daniel Phillips [this message]
2008-03-11 3:50 ` Daniel Phillips
2008-03-11 13:32 ` Artur Skawina
2008-03-11 14:31 ` Artur Skawina
2008-03-12 13:11 ` Alan Cox
2008-03-12 17:29 ` Daniel Phillips
2008-03-12 18:11 ` Chris Friesen
2008-03-12 22:56 ` Daniel Phillips
2008-03-13 5:45 ` David Newall
2008-03-13 6:17 ` Daniel Phillips
2008-03-13 6:30 ` David Newall
2008-03-13 6:50 ` Daniel Phillips
2008-03-13 7:05 ` David Newall
2008-03-13 7:13 ` Daniel Phillips
2008-03-15 13:32 ` Pavel Machek
2008-03-15 20:22 ` Daniel Phillips
2008-03-15 21:33 ` Pavel Machek
2008-03-15 21:47 ` Daniel Phillips
2008-03-13 6:32 ` david
2008-03-13 7:12 ` Daniel Phillips
2008-03-13 7:55 ` david
2008-03-13 8:06 ` Daniel Phillips
2008-03-13 8:39 ` david
2008-03-13 9:16 ` Daniel Phillips
2008-03-13 16:25 ` david
2008-03-13 19:32 ` Daniel Phillips
2008-03-13 19:50 ` David Newall
2008-03-13 20:03 ` Daniel Phillips
2008-03-14 17:53 ` Jeff Moyer
2008-03-15 20:26 ` Pavel Machek
2008-03-15 20:40 ` Mike Snitzer
2008-03-15 21:05 ` Daniel Phillips
2008-03-15 20:18 ` Pavel Machek
2008-03-15 20:51 ` Daniel Phillips
2008-03-13 9:49 ` Daniel Phillips
2008-03-13 5:39 ` David Newall
2008-03-13 6:14 ` Daniel Phillips
2008-03-13 13:22 ` Alan Cox
2008-03-13 19:14 ` Daniel Phillips
2008-03-13 20:27 ` Rik van Riel
2008-03-14 2:23 ` Daniel Phillips
2008-03-14 5:22 ` David Newall
2008-03-14 5:42 ` Daniel Phillips
2008-03-14 14:00 ` John Stoffel
2008-03-15 20:59 ` Willy Tarreau
2008-03-15 20:56 ` Alan Cox
2008-03-15 21:25 ` Daniel Phillips
2008-03-15 21:08 ` Alan Cox
2008-03-15 21:51 ` Daniel Phillips
2008-03-15 21:17 ` Daniel Phillips
2008-03-15 21:03 ` Alan Cox
2008-03-15 22:00 ` Daniel Phillips
2008-03-15 23:05 ` Alan Cox
2008-03-16 21:57 ` Daniel Phillips
2008-03-16 21:55 ` Alan Cox
2008-03-16 22:36 ` Daniel Phillips
2008-03-16 22:46 ` Alan Cox
2008-03-16 23:39 ` Daniel Phillips
2008-03-17 11:53 ` Alan Cox
2008-03-17 1:31 ` David Newall
2008-03-17 2:42 ` Daniel Phillips
2008-03-17 3:59 ` david
2008-03-17 5:52 ` Daniel Phillips
2008-03-17 6:49 ` david
2008-03-17 8:16 ` Daniel Phillips
2008-03-17 10:39 ` Alan Cox
2008-03-17 13:52 ` Ric Wheeler
2008-03-17 14:42 ` david
2008-03-17 17:23 ` david
2008-03-17 17:30 ` Willy Tarreau
[not found] ` <200803180233.10156.phillips@phunq.net>
2008-03-18 13:03 ` David Newall
2008-03-18 16:36 ` david
2008-03-31 11:40 ` Daniel Phillips
2008-04-01 0:28 ` david
2008-04-01 4:07 ` Daniel Phillips
2008-04-01 4:23 ` david
2008-04-01 6:08 ` Daniel Phillips
2008-03-18 13:57 ` Alan Cox
2008-03-31 11:39 ` Daniel Phillips
2008-03-17 7:14 ` David Newall
2008-03-17 8:25 ` Daniel Phillips
2008-03-17 18:56 ` David Newall
2008-03-23 9:33 ` Pavel Machek
2008-03-23 20:44 ` Daniel Phillips
2008-03-15 21:54 ` Willy Tarreau
2008-03-15 22:33 ` Daniel Phillips
2008-03-15 23:22 ` david
2008-03-15 23:57 ` Krzysztof Halasa
2008-03-15 23:22 ` Willy Tarreau
2008-03-16 3:33 ` Daniel Phillips
2008-03-16 5:24 ` David Newall
2008-03-16 12:49 ` Ingo Oeser
2008-03-16 6:56 ` Willy Tarreau
2008-03-16 22:12 ` Krzysztof Halasa
2008-03-16 13:14 ` Alan Cox
2008-03-16 19:04 ` Theodore Tso
2008-03-16 22:02 ` Krzysztof Halasa
2008-03-15 23:18 ` Bernd Eckenfels
2008-03-16 5:42 ` David Newall
2008-03-16 20:48 ` Daniel Phillips
2008-03-16 22:15 ` Krzysztof Halasa
2008-03-16 22:38 ` Daniel Phillips
2008-03-16 23:08 ` Krzysztof Halasa
2008-03-16 23:43 ` Daniel Phillips
2008-03-10 14:51 ` Artur Skawina
2008-03-10 18:49 ` Chris Snook
2008-03-11 5:06 ` Greg KH
2008-03-11 5:22 ` Daniel Phillips
2008-03-11 5:48 ` david
2008-03-11 6:27 ` Greg KH
2008-03-12 12:01 ` tvrtko.ursulin
2008-03-12 17:27 ` Daniel Phillips
[not found] <OFA00954A4.45F32CA2-ON8025740B.005D7B40-8025740B.005EECA6@sophos.com>
2008-03-13 19:34 ` Daniel Phillips
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