Re: [Xen-devel] Re: [Xen-users] Xen 4 - Page Sharing HowTo?

["Nick Couchman" <Nick.Couchman@xxxxxxxxx>]

> The two images have to be using a common disc image (or a delta of a common
> disc image) exported by a memshr-aware block-device backend: blktap1 or
> blktap2. In fact, would have to be the former, since blktap2 has memshr
> support disabled as it was crashing. The sharing opportunities aren't
> discovered by page scanning, as in some other schemes.

Ah, this I did not know, though I wondered if it were the case based on the 
fact that the original post that Andrew pointed me toward included patches for 
the blktap drivers.  So, is there any way to make this work using a physical 
device (like a logical volume) as the disk?

-Nick





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