From: Phillip Lougher <phillip@lougher.demon.co.uk>
To: "Linus Torvalds" <torvalds@osdl.org>,
"Jörn Engel" <joern@wohnheim.fh-wedel.de>
Cc: Kallol Biswas <kbiswas@neoscale.com>,
linux-kernel@vger.kernel.org,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>
Subject: Re: partially encrypted filesystem
Date: Thu, 04 Dec 2003 16:07:20 +0000 [thread overview]
Message-ID: <3FCF5BB8.50500@lougher.demon.co.uk> (raw)
In-Reply-To: <Pine.LNX.4.58.0312040712270.2055@home.osdl.org>
Linus Torvalds wrote:
>
>
> Encryption does have a few extra problems, simply because of the intent.
> In a compressed filesystem it is ok to say "this information tends to be
> small and hard to compress, so let's not" (for example, metadata). While
> in an encrypted filesystem you shouldn't skip the "hard" pieces..
Squashfs is I think the only Linux filesystem that does compress the
metadata. I did this more as a technical challenge, but the extra
compression is sometimes worthwhile, especially with filesystems with
lots of small files. Normally, however, it probably isn't worth the effort.
Phillip
>
> (Encrypted filesystems also have the key management issues, further
> complicating the thing, but that complication tends to be at a higher
> level).
>
> Linus
next prev parent reply other threads:[~2003-12-04 16:09 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-03 21:07 partially encrypted filesystem Kallol Biswas
2003-12-03 21:44 ` Richard B. Johnson
2003-12-03 21:44 ` Jörn Engel
2003-12-04 0:08 ` Linus Torvalds
2003-12-04 1:25 ` Jeff Garzik
2003-12-04 2:08 ` Linus Torvalds
2003-12-04 2:37 ` Charles Manning
2003-12-04 14:17 ` Jörn Engel
2003-12-04 15:20 ` Linus Torvalds
2003-12-04 16:07 ` Phillip Lougher [this message]
2003-12-04 17:26 ` Jörn Engel
2003-12-04 18:20 ` Phillip Lougher
2003-12-04 18:40 ` Jörn Engel
2003-12-04 19:41 ` Erez Zadok
2003-12-05 11:20 ` Jörn Engel
2003-12-05 16:16 ` Erez Zadok
2003-12-05 19:14 ` Matthew Wilcox
2003-12-05 19:47 ` Erez Zadok
2003-12-05 20:28 ` Matthew Wilcox
2003-12-05 21:38 ` Pat LaVarre
2003-12-06 0:15 ` Maciej Zenczykowski
2003-12-06 1:35 ` Pat LaVarre
2003-12-06 2:39 ` Valdis.Kletnieks
2003-12-06 11:43 ` Maciej Zenczykowski
2003-12-07 0:04 ` Shaya Potter
2003-12-08 14:08 ` Jörn Engel
2003-12-06 0:50 ` Phillip Lougher
2003-12-08 11:37 ` David Woodhouse
[not found] ` <1070883425.31993.80.camel@hades.cambridge.redhat.com>
2003-12-08 13:44 ` phillip
2003-12-08 14:07 ` David Woodhouse
2003-12-10 1:16 ` [OT?]Re: " Charles Manning
2003-12-10 17:45 ` Phillip Lougher
2003-12-09 23:40 ` Pat LaVarre
2003-12-10 0:07 ` Pavel Machek
2003-12-10 1:28 ` Pat LaVarre
2003-12-10 2:13 ` Charles Manning
2003-12-05 19:58 ` Pat LaVarre
2003-12-08 11:28 ` David Woodhouse
2003-12-08 13:49 ` phillip
2003-12-19 15:01 ` Rik van Riel
2003-12-04 3:10 ` Valdis.Kletnieks
2003-12-04 18:16 ` Hans Reiser
-- strict thread matches above, loose matches on Subject: below --
2003-12-06 19:56 Pat LaVarre
2003-12-06 22:07 ` Maciej Zenczykowski
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