Hi,
(I'm Cc'ing Prasad too.)
On Thu, Nov 17, 2011 at 9:50 AM, Lan Tianyu <tianyu.lan@xxxxxxxxx> wrote:
> When meeting request to write the cluster without copied flag,
> allocate a new cluster and write original data with modification
> to the new cluster. This also can add support for the writing
> operation of the qcow2 compressed image.
>
> Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
Looks reasonable - I'll take a more detailed look later today. How did
you test this? Have you checked the QCOW2 image after copy-on-write
with "qemu-img check"? There's some existing issues that seem to cause
corruption which is why we're forcing read-only. It'd be nice to fix
those issues before adding more features. ;-)
Pekka
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