From: Michael Richardson <mcr@sandelman.ottawa.on.ca>
To: "Montgomery, Kendal L" <kendal.montgomery@qwest.com>
Cc: user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] Separate COW patch.
Date: Sat, 27 Sep 2003 18:56:45 -0400 [thread overview]
Message-ID: <20563.1064703405@marajade.sandelman.ottawa.on.ca> (raw)
In-Reply-To: Your message of "Fri, 26 Sep 2003 18:45:26 EDT." <2D4B6CD74137D4119A1100104BC6BCBF0BC585FC@dubntex006.qwest.net>
-----BEGIN PGP SIGNED MESSAGE-----
If you are going to spend time on this, go look at the "union" file system
type available in BSDs and the "Translucent" in Solaris.
I think that some people have tried to do this before... usually, it is
a variation of the "null" mount.
It permits one to layer one filesystem on top of another file system, and
have all modifications go to the upper one. This is done on a *per-file*
basis, not on a block file system.
COW is about blocks, not files. This may be more appropriate for your use,
or it might not be.
] Train travel features AC outlets with no take-off restrictions| firewalls [
] Michael Richardson, Sandelman Software Works, Ottawa, ON |net architect[
] mcr@sandelman.ottawa.on.ca http://www.sandelman.ottawa.on.ca/ |device driver[
] panic("Just another Debian/notebook using, kernel hacking, security guy"); [
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next prev parent reply other threads:[~2003-09-27 23:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-26 22:45 [uml-devel] Separate COW patch Montgomery, Kendal L
2003-09-26 23:14 ` Goetz Bock
2003-09-27 0:02 ` Jeff Dike
2003-09-27 22:56 ` Michael Richardson [this message]
2003-09-28 0:00 ` Paul Sladen
2003-09-28 1:44 ` Matt Zimmerman
-- strict thread matches above, loose matches on Subject: below --
2003-09-29 16:53 Montgomery, Kendal L
2003-10-06 21:23 ` Jeff Dike
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