Date: Mon, 8 Jan 2007 11:18:52 -0800
From: Andrew Morton <akpm@osdl.org>
To: "Josef 'Jeff' Sipek" <jsipek@cs.sunysb.edu>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
       hch@infradead.org, viro@ftp.linux.org.uk, torvalds@osdl.org,
       mhalcrow@us.ibm.com, David Quigley <dquigley@fsl.cs.sunysb.edu>,
       Erez Zadok <ezk@cs.sunysb.edu>
Subject: Re: [PATCH 01/24] Unionfs: Documentation
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On Sun,  7 Jan 2007 23:12:53 -0500
"Josef 'Jeff' Sipek" <jsipek@cs.sunysb.edu> wrote:

> +Modifying a Unionfs branch directly, while the union is mounted, is
> +currently unsupported.

Does this mean that if I have /a/b/ and /c/d/ unionised under /mnt/union, I
am not allowed to alter anything under /a/b/ and /c/d/?  That I may only
alter stuff under /mnt/union?

If so, that sounds like a significant limitation.

> Any such change can cause Unionfs to oops, or stay
> silent and even RESULT IN DATA LOSS.

With a rather rough user interface ;)


Also, is it possible to add new branches to an existing union mount?  And
to take old ones away?
-
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