From: Tom Vier <tmv@comcast.net>
To: Valerie Henson <val_henson@linux.intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
Helge Hafting <helgehaf@aitel.hist.no>,
Thomas Glanzmann <sithglan@stud.uni-erlangen.de>,
"Theodore Ts'o" <tytso@mit.edu>, Andrew Morton <akpm@osdl.org>
Subject: Re: Blatant layering violations (was Re: ext4 features)
Date: Thu, 6 Jul 2006 16:02:30 -0400 [thread overview]
Message-ID: <20060706200230.GC27533@zero> (raw)
In-Reply-To: <20060706003638.GL5231@goober>
On Wed, Jul 05, 2006 at 05:36:39PM -0700, Valerie Henson wrote:
> On Mon, Jul 03, 2006 at 10:55:23PM +0200, Tomasz Torcz wrote:
> >
> > ZFS was already called ,,blatant layering violation''. ;)
It buys you some preformance. Someone here already mentioned variable stripe
sizes. ZFS doesn't just add a checksum sector after each block (something
i've been planning to write an md module for, for a couple years). It writes
the checksum at the end of the tree member, inode, dirent, whatever. So
there's no read-modify-write when you write < 1 checksum block size.
One thing i noticed about zfs that surprised me: it's using indirect blocks,
from what i saw.
--
Tom Vier <tmv@comcast.net>
DSA Key ID 0x15741ECE
next prev parent reply other threads:[~2006-07-06 20:05 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-01 16:33 ext4 features Thomas Glanzmann
2006-07-01 17:07 ` Tomasz Torcz
2006-07-01 17:47 ` Thomas Glanzmann
2006-07-01 18:09 ` Claudio Martins
2006-07-01 18:59 ` Thomas Glanzmann
2006-07-01 18:17 ` Tomasz Torcz
2006-07-03 9:44 ` Gabor Gombas
2006-07-03 20:22 ` Helge Hafting
2006-07-03 20:55 ` Tomasz Torcz
2006-07-03 21:01 ` Arjan van de Ven
2006-07-03 21:46 ` Jeff V. Merkey
2006-07-03 21:25 ` Diego Calleja
2006-07-03 22:17 ` Alan Cox
2006-07-04 14:45 ` Jan Engelhardt
2006-07-04 16:35 ` Jeffrey V. Merkey
2006-07-04 18:52 ` Jeff Garzik
2006-07-04 19:40 ` Jeffrey V. Merkey
2006-07-05 13:35 ` Lew Palm
2006-07-03 23:01 ` Jeff V. Merkey
2006-07-04 9:14 ` Benny Amorsen
2006-07-05 4:21 ` Bill Davidsen
2006-07-05 5:13 ` H. Peter Anvin
2006-07-05 5:45 ` Jeffrey V. Merkey
2006-07-07 14:12 ` Pavel Machek
2006-07-05 10:38 ` Krzysztof Halasa
2006-07-07 14:10 ` Pavel Machek
2006-07-07 17:45 ` Krzysztof Halasa
2006-07-07 21:30 ` Pavel Machek
2006-07-08 10:52 ` Krzysztof Halasa
2006-07-08 10:55 ` Pavel Machek
2006-07-08 11:19 ` Krzysztof Halasa
2006-07-08 11:23 ` Pavel Machek
2006-07-08 18:45 ` Avi Kivity
2006-07-08 20:24 ` Krzysztof Halasa
2006-07-04 9:22 ` Petr Tesarik
2006-07-04 11:35 ` Peter Zijlstra
2006-07-04 11:55 ` ext4 features (salvage) Petr Tesarik
[not found] ` <80294dc60607040508l1022d164ybe0ba10858e54f0c@mail.gmail.com>
2006-07-04 12:31 ` Petr Tesarik
2006-07-04 12:42 ` Helge Hafting
2006-07-04 16:20 ` Matthew Frost
2006-07-04 15:25 ` ext4 features Pavel Machek
2006-07-05 4:10 ` Bill Davidsen
2006-07-03 21:46 ` Valdis.Kletnieks
[not found] ` <Pine.LNX.4.61.0607032354170.31747@yvahk01.tjqt.qr>
2006-07-04 14:37 ` Kernel recycler [was: ext4 features] Jan Engelhardt
2006-07-04 11:14 ` ext4 features Krzysztof Halasa
2006-07-04 22:35 ` Frank van Maarseveen
2006-07-04 23:47 ` Claudio Martins
2006-07-03 22:12 ` Alan Cox
2006-07-03 21:59 ` Arjan van de Ven
2006-07-03 23:31 ` ext4 features (checksums) Neil Brown
2006-07-04 1:03 ` Jeff Garzik
2006-07-04 6:09 ` Avi Kivity
2006-07-04 7:02 ` Neil Brown
2006-07-04 8:26 ` Avi Kivity
2006-07-05 11:56 ` Bill Davidsen
2006-07-05 12:06 ` Bill Davidsen
2006-07-05 12:19 ` Avi Kivity
2006-07-08 17:54 ` Bill Davidsen
2006-07-04 8:17 ` Alan Cox
2006-07-04 11:08 ` Thomas Glanzmann
2006-07-04 11:19 ` Krzysztof Halasa
2006-07-04 12:49 ` Helge Hafting
2006-07-05 12:01 ` Bill Davidsen
2006-07-05 12:10 ` Avi Kivity
2006-07-08 18:02 ` Bill Davidsen
2006-07-06 0:36 ` Blatant layering violations (was Re: ext4 features) Valerie Henson
2006-07-06 12:15 ` Xavier Bestel
2006-07-06 17:06 ` Valdis.Kletnieks
2006-07-06 20:02 ` Tom Vier [this message]
2006-07-03 21:34 ` ext4 features Bill Davidsen
2006-07-03 21:50 ` Valdis.Kletnieks
2006-07-03 22:04 ` Bruce Ferrell
2006-07-04 14:48 ` Valdis.Kletnieks
2006-07-03 23:00 ` Bill Davidsen
2006-07-04 15:01 ` Valdis.Kletnieks
2006-07-05 2:40 ` Bill Davidsen
2006-07-05 2:47 ` Valdis.Kletnieks
2006-07-04 12:52 ` Helge Hafting
2006-07-06 15:12 ` Ric Wheeler
2006-07-06 17:05 ` Krzysztof Halasa
2006-07-06 17:27 ` Ric Wheeler
2006-07-06 20:52 ` Valdis.Kletnieks
2006-07-07 17:41 ` Krzysztof Halasa
2006-07-07 17:34 ` Krzysztof Halasa
2006-07-04 1:02 ` Theodore Tso
2006-07-04 19:16 ` Thomas Glanzmann
2006-07-04 19:30 ` Valdis.Kletnieks
2006-07-05 12:24 ` Bill Davidsen
2006-07-05 12:59 ` J. Bruce Fields
2006-07-05 13:17 ` Pádraig Brady
2006-07-05 19:33 ` Trond Myklebust
2006-07-05 21:22 ` Bill Davidsen
2006-07-05 21:42 ` Trond Myklebust
2006-07-08 21:04 ` Bill Davidsen
2006-07-10 20:08 ` Trond Myklebust
2006-07-10 22:37 ` Bill Davidsen
2006-07-11 2:36 ` Trond Myklebust
2006-07-21 3:10 ` Bill Davidsen
2006-07-21 12:06 ` Trond Myklebust
2006-07-21 14:36 ` Theodore Tso
2006-07-21 19:02 ` Trond Myklebust
2006-07-22 12:25 ` Theodore Tso
2006-07-05 21:12 ` Bill Davidsen
2006-07-05 21:27 ` linux-os (Dick Johnson)
2006-07-05 21:41 ` J. Bruce Fields
2006-07-06 2:32 ` Bill Davidsen
2006-07-06 2:42 ` Nigel Cunningham
2006-07-06 12:43 ` Trond Myklebust
2006-07-07 2:15 ` Bill Davidsen
2006-07-07 2:30 ` Trond Myklebust
2006-07-07 2:42 ` Ric Wheeler
2006-07-07 2:46 ` Trond Myklebust
2006-07-07 3:16 ` Bill Davidsen
2006-07-07 8:09 ` Bernd Petrovitsch
2006-07-07 14:56 ` Trond Myklebust
2006-07-07 19:52 ` Theodore Tso
2006-07-05 14:04 ` Avi Kivity
2006-07-04 14:36 ` Andi Kleen
2006-07-04 14:43 ` Thomas Glanzmann
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20060706200230.GC27533@zero \
--to=tmv@comcast.net \
--cc=akpm@osdl.org \
--cc=helgehaf@aitel.hist.no \
--cc=linux-kernel@vger.kernel.org \
--cc=sithglan@stud.uni-erlangen.de \
--cc=tytso@mit.edu \
--cc=val_henson@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.