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On Wed, Jun 11, 2014 at 11:24:04AM +0530, Deepak Shetty wrote:
>    Thanks that helped, just curious, why does it need to use libguestfs ?
> Why can't it just use qemu-img resize to check ?

Nova is checking whether or not the given disk image has partitions.
If has partitions, it cannot be blindly resized.  qemu-img cannot
perform this check.

This is from memory; for authoritative details, see the source:
nova/virt/disk/api.py, "is_image_partitionless".

> Also in my devstack setup i see that my Nova VM is stuck at this step.. so
> it looks like nova libvirt driver debug says "Creating image" in the n-cpu
> log

I have run into this bug when attempting to use nested KVM.  There's a
bug report here:

  https://bugs.launchpad.net/nova/+bug/1286256

-- 
Lars Kellogg-Stedman <lars at redhat.com> | larsks @ irc
Cloud Engineering / OpenStack          | "   "  @ twitter

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