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On Thu, Jan 30, 2014 at 02:59:45PM +0000, sahid wrote:
>   Greetings,
> 
> A blueprint is being discussed about the disk resize down feature of libvirt driver.
>   https://blueprints.launchpad.net/nova/+spec/libvirt-resize-disk-down
> 
> The current implementation does not handle disk resize down and just skips the
> step during a resize down of the instance. I'm really convinced we can implement 
> this feature by using the good job of disk resize down of the driver xenapi.

resize2fs -M is problematic as another reply mentions.

virt-sparsify is designed to handle this case properly.  It currently
works by copying the disk image, but it should soon work in-place too
(waiting on some qemu command line changes).

And incidentally, virt-resize can handle the offline growing case well
too.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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