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Re: [Xen-devel] !!!!!help!I wouldn't be able to meet the deadline!(qcow format image file read operation in qemu-img-xen)[updated]



On 19/12/12 15:23, hxkhust wrote:
> Or could you tell me how to cache the data which is read from the
> backingfile when a qcow image is regarded as a virtual disk in a
> running HVM?
I take it the above single question is the effect of my previous reply?
Why did you have to "hide" that little extra question in the whole
previous e-mail?

Sorry, don't know the answer to your question [I'm guessing, in general,
that the Dom0 will do that for you, subject to available space], just
pointing out that there is a minor difference between your previous and
current mail.

By caching, do you mean "load the entire file into RAM", or "if a read
is requested for the same piece of 'disk' multiple times, I want the
previous result to be stored and returned".

--
Mats

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