From: Andreas Dilger <adilger@clusterfs.com>
To: Hans Reiser <reiser@namesys.com>
Cc: Ragnar =?unknown-8bit?Q?Kj=F8rstad?=
<reiserfs@ragnark.vestdata.no>,
"Russell Coker" <bofh@coker.com.au>,
reiserfs-list@namesys.com
Subject: Re: Reiserfs with Samba vs NetApp Filer
Date: Sun, 13 Oct 2002 21:50:50 -0600 [thread overview]
Message-ID: <20021014035050.GO3045@clusterfs.com> (raw)
In-Reply-To: <3DA9A128.5000206@namesys.com>
On Oct 13, 2002 20:36 +0400, Hans Reiser wrote:
> Andreas, very briefly, you want to find things in reiserfs by their
> keys, and you have no need for any directory entries at all, and having
> those directory entries will add substantial overhead. Your metadata
> manager can probably track references, and if so there is no need for
> the FS to track it.
On the storage target (OST), we don't really need directories at all.
The obdfilter uses a 64-bit object number (generated by the OST itself)
to refer to "files" it is storing, so as long as the reiserfs keys fit
into 64 bits, having a very efficient lookup method would be ideal.
The metadata server (MDS) of course must handle directories as a normal
filesystem does, because it is in charge of presenting a normal filesystem
heirarchy to applications.
Cheers, Andreas
--
Andreas Dilger
http://www-mddsp.enel.ucalgary.ca/People/adilger/
http://sourceforge.net/projects/ext2resize/
next prev parent reply other threads:[~2002-10-14 3:50 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-10 7:01 Reiserfs and recovering from the format action Fabrizio Morbini
2002-10-10 1:48 ` Reiserfs with Samba vs NetApp Filer darren
2002-10-10 14:58 ` Philippe Gramoullé
2002-10-10 17:31 ` Hans Reiser
2002-10-10 17:53 ` Philippe Gramoullé
2002-10-10 18:02 ` Hans Reiser
2002-10-10 18:57 ` Dieter Nützel
2002-10-10 19:00 ` Dieter Nützel
2002-10-11 10:40 ` Lars Marowsky-Bree
2002-10-11 10:54 ` Philippe Gramoullé
2002-10-11 12:34 ` Adrian Phillips
2002-10-11 13:05 ` Philippe Gramoullé
2002-10-12 14:34 ` Heinz-Josef Claes
[not found] ` <200210112022.27319.russell@coker.com.au>
2002-10-11 20:00 ` Hans Reiser
2002-10-12 8:52 ` Russell Coker
2002-10-12 9:59 ` Hans Reiser
2002-10-14 2:21 ` Reiserfs with Samba vs NetApp Filer (purely performance) darren
2002-12-14 21:19 ` Hans Reiser
2002-12-14 22:34 ` Richard Sharpe
2002-12-14 23:11 ` Ragnar Kjørstad
2002-12-14 23:21 ` Hans Reiser
2002-12-15 2:13 ` Richard Sharpe
2002-12-15 2:09 ` Richard Sharpe
[not found] ` <20021012150028.G14731@vestdata.no>
2002-10-12 14:00 ` Reiserfs with Samba vs NetApp Filer Russell Coker
2002-10-12 14:47 ` Adrian Phillips
2002-10-12 21:55 ` Hans Reiser
2002-10-12 22:29 ` Andreas Dilger
2002-10-13 1:23 ` Hans Reiser
2002-10-13 6:38 ` Andreas Dilger
2002-10-13 13:48 ` Hans Reiser
2002-10-13 15:46 ` Andreas Dilger
[not found] ` <20021013181003.D24037@vestdata.no>
2002-10-13 16:36 ` Hans Reiser
2002-10-14 3:50 ` Andreas Dilger [this message]
2002-10-14 10:48 ` Hans Reiser
2002-10-12 23:02 ` The Amazing Dragon
2002-10-12 23:27 ` Russell Coker
[not found] ` <20021013020800.T14731@vestdata.no>
2002-10-13 1:39 ` Hans Reiser
2002-10-13 6:52 ` The Amazing Dragon
[not found] ` <20021014175909.GA10292@tapu.f00f.org>
2002-10-14 20:52 ` Russell Coker
2002-10-14 21:24 ` Dieter Nützel
[not found] ` <20021014225812.GA11337@tapu.f00f.org>
2002-10-15 12:57 ` Russell Coker
2002-10-15 13:42 ` Hans Reiser
2002-10-15 14:46 ` Russell Coker
2002-10-15 13:43 ` Hans Reiser
2002-10-10 11:31 ` Reiserfs and recovering from the format action Oleg Drokin
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