Filesystem overlay ?

[Lennart Sorensen]

On Fri, Feb 04, 2005 at 02:40:18PM -0700, Adil Kodian wrote:
> this isnt any complex feature.
> 
> you have a CDROM mounted with /var on it that is read-only.
> 
> now you can create a ramdisk and mount it as /var (or whatever you need to
> be writable.
> 
> it will overlay your existing /var and use the mounted /var. when you
> reboot, everything is lost.

Hmm, in my experience, if you mount something on top of something else,
the something else is hidden until you unmount the new thing.  Maybe
there are mount options to change that but I don't think it does so by
default.  I could be wrong though.  I haven't tried it in a while.

Lennart Sorensen
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