Re: [PATCH 00/30] storagefile, security: qcow2 data_file support

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On 17 Oct 2019, at 14:35, Cole Robinson <crobinso@xxxxxxxxxx> wrote:

Hmm why wasn't I in to/cc list, was that intentional?

Not at all. I assumed a reply-to would add it automatically and did not
bother checking. Probably something wrong in my mu4e config.


On 10/17/19 5:26 AM, Christophe de Dinechin wrote:

Cole Robinson writes:

This series is the first steps to teaching libvirt about qcow2
data_file support, aka external data files or qcow2 external metadata.

A bit about the feature: it was added in qemu 4.0. It essentially
creates a two part image file: a qcow2 layer that just tracks the
image metadata, and a separate data file which is stores the VM

s/is stores/stores/

Indeed, but what's the benefit of correcting grammar in a cover letter
for already applied patches?

Obviously, I realized you had already applied that patch only after sending
my email ;-) I saw that there was still some active discussion on that thread,
so I assumed it was still under review.


What happens if you try to do that in place, i.e. EXISTING==NEW?


Results in an unbootable image in my testing. I'm guessing it
initializes the raw image first, similar to trying to use 'qemu-img
create' with an existing raw image as data_file

https://bugzilla.redhat.com/show_bug.cgi?id=1688814#c8

OK. Might be worth catching or fixing at some point.


Christophe
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