linux-kernel - Re: [RFC 0/7] [RFC] cramfs: fake write support

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Message-ID: <48423B8A.20505@davidnewall.com>
Date:	Sun, 01 Jun 2008 15:32:50 +0930
From:	David Newall <davidn@...idnewall.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	hch@....de
Subject: Re: [RFC 0/7] [RFC] cramfs: fake write support

Arnd Bergmann wrote:
> On Saturday 31 May 2008, David Newall wrote:
>   
>> I prefer the technique of union of a tmpfs over some other fs
>>     
>
> You're right in principle, but unfortunately there is to date no working
> implementation of union mounts. Giving users the option of using an
> existing file system with a few tweaks can only be better than than
> forcing them to use hacks like unionfs.

I've not used unionfs (nor aufs) so I'm not aware of its foibles, but I
can say that it's the right kind of solution.  Rather than spend effort
implementing write support for read-only filesystems, why not put your
time into fixing whatever you see wrong with one or both of those?
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