linux-kernel - Re: [PATCH 0/7] overlay filesystem: request for inclusion

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20110609115934.3c53f78f@notabene.brown>
Date:	Thu, 9 Jun 2011 11:59:34 +1000
From:	NeilBrown <neilb@...e.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Miklos Szeredi <miklos@...redi.hu>, viro@...IV.linux.org.uk,
	torvalds@...ux-foundation.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, apw@...onical.com, nbd@...nwrt.org,
	hramrach@...trum.cz, jordipujolp@...il.com, ezk@....cs.sunysb.edu,
	mszeredi@...e.cz
Subject: Re: [PATCH 0/7] overlay filesystem: request for inclusion

On Wed, 8 Jun 2011 15:32:08 -0700 Andrew Morton <akpm@...ux-foundation.org>
wrote:

> On Wed,  1 Jun 2011 14:46:13 +0200
> Miklos Szeredi <miklos@...redi.hu> wrote:
> 
> > I'd like to ask for overlayfs to be merged into 3.1.
> 
> Dumb questions:
> 
> I've never really understood the need for fs overlaying.  Who wants it?
> What are the use-cases?

https://lwn.net/Articles/324291/

I think the strongest use case is that LIVE-DVD's want it to have a write-able
root filesystem which is stored on the DVD.

> 
> This sort of thing could be implemented in userspace and wired up via
> fuse, I assume.  Has that been attempted and why is it inadequate?

I think that would be a valid question if the proposal was large and
complex.  But overlayfs is really quite small and self-contained.

NeilBrown
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/