Re: [Xen-users] Live DemoCD / cow? storage

[maney@xxxxxxxxx (Martin Maney)]

On Wed, Apr 06, 2005 at 08:25:04AM -0300, Fernando Maior wrote:
> They are really useful, I have a configuration
> with one host machine with 8 UML virtual machines
> inside, all of them using only one root partition
> image, each of them having their exclusive cow file.
> 
> Yet, I do not know how to use them from Xen. If you
> are interested, go ahead and ask.

UML's COW facility is a UML-specific implementation.  The only
general-purpose implementation I know of offhand would be to use LVM's
snapshotting capabilities, but that seems not to be the best-tested
part of LVM (or perhaps it's just that you have problems if it uses all
the space you allocated for it).

-- 
I didn't write a whole, free operating system, either.  I wrote some pieces
and invited other people to join me by writing other pieces.  So I set an
example.  I said, "I'm going in this direction.  Join me and we'll get
there." And enough people joined in that we got there.  -- R M Stallman


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