Re: [Xen-devel] copy on write memory

[Rik van Riel <riel@xxxxxxxxxx>]

On Mon, 15 Nov 2004, Peri Hankey wrote:

> It occurred to me that the equivalent in the Xen world would be to use 
> one Linux xenU domain purely as a page-table manager for a collection of 
> separate xenU domains that are expected or known have similar process 
> populations.
UML copy on write is only for filesystems, isn't it ?

The Xen equivalent would be cloning the xenU root filesystem
as an LVM snapshot, from a read-only LVM snapshot.  Then each
xenU virtual system would only use the disk space it writes
to and no more.

--
"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan


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