Comment 32 for bug 1847105

I think this was fixed in libvirt upstream, please reopen and correct me if I'm wrong

commit 81a3042a12c7c06adc8e95264b6143b2eeb4953f
Author: Pavel Hrdina <email address hidden>
Date: Tue Aug 25 15:09:53 2020 +0200

    storage_util: fix qemu-img sparse allocation

    Commit <c9ec7088c7a3f4cd26bb471f1f243931fff6f4f9> introduced a support
    to fully allocate qcow2 images when <allocation> matches <capacity> but
    it doesn't work as expected.

    The issue is that info.size_arg is in KB but the info.allocation
    introduced by the mentioned commit is in B. This results in using
    "preallocation=falloc," in cases where "preallocation=metadata," should
    be used.

    Signed-off-by: Pavel Hrdina <email address hidden>
    Reviewed-by: Michal Privoznik <email address hidden>