From: Theodore Tso <tytso@mit.edu>
To: Matt Mackall <mpm@selenic.com>
Cc: linux-fsdevel@vger.kernel.org
Subject: Re: [RFC] TileFS - a proposal for scalable integrity checking
Date: Mon, 30 Apr 2007 13:26:24 -0400 [thread overview]
Message-ID: <20070430172624.GB19149@thunk.org> (raw)
In-Reply-To: <20070430014042.GL11115@waste.org>
On Sun, Apr 29, 2007 at 08:40:42PM -0500, Matt Mackall wrote:
> chunkfs. The other is reverse maps (aka back pointers) for blocks ->
> inodes and inodes -> directories that obviate the need to have large
> amounts of memory to check for collisions.
Yes, I missed the fact that you had back pointers for blocks as well
as inodes. So the block table in the tile header gets used for
determing if a block is free, much like is done with FAT, right?
That's a clever system; I like it. It does mean that there is a lot
more metadata updates, but since you're not journaling, that should
counter that effect to some extent.
IMHO, it's definitely worth a try to see how well it works!
- Ted
next prev parent reply other threads:[~2007-04-30 17:26 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-28 22:05 [RFC] TileFS - a proposal for scalable integrity checking Matt Mackall
2007-04-29 12:21 ` Jörn Engel
2007-04-29 12:57 ` Matt Mackall
2007-04-29 15:47 ` Jörn Engel
2007-05-09 5:56 ` Valerie Henson
2007-05-09 10:12 ` Jörn Engel
2007-04-29 15:58 ` Jörn Engel
2007-04-29 16:24 ` Matt Mackall
2007-04-29 16:34 ` Andi Kleen
2007-04-29 16:05 ` Jörn Engel
2007-04-29 16:09 ` Matt Mackall
2007-04-29 23:23 ` Theodore Tso
2007-04-30 1:40 ` Matt Mackall
2007-04-30 17:26 ` Theodore Tso [this message]
2007-04-30 17:59 ` Matt Mackall
2007-05-02 13:18 ` Jörn Engel
2007-05-02 13:32 ` Jörn Engel
2007-05-02 15:37 ` Matt Mackall
2007-05-02 16:35 ` Jörn Engel
2007-05-09 7:56 ` Valerie Henson
2007-05-09 11:16 ` Nikita Danilov
2007-05-09 18:56 ` Valerie Henson
2007-05-09 19:19 ` Nikita Danilov
2007-05-09 17:06 ` Matt Mackall
2007-05-09 18:59 ` Valerie Henson
2007-05-09 19:51 ` Matt Mackall
2007-05-10 0:03 ` Jörn Engel
2007-05-11 9:46 ` Valerie Henson
2007-05-11 15:55 ` Matt Mackall
2007-05-09 19:01 ` Valerie Henson
2007-05-09 20:05 ` Matt Mackall
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