[libvirt] [RFC] Question regarding the validity of QEMU capabilities
jdenemar at redhat.com
Fri Oct 20 11:33:07 UTC 2017
On Fri, Oct 20, 2017 at 13:15:41 +0200, Marc Hartmayer wrote:
> On Fri, Oct 20, 2017 at 01:10 PM +0200, Pavel Hrdina <phrdina at redhat.com> wrote:
> > On Fri, Oct 20, 2017 at 12:59:51PM +0200, Marc Hartmayer wrote:
> >> Hi all,
> >> the actual capabilities of QEMU are depending on the host. This
> >> includes dependencies like which kernel modules are loaded or which
> >> kernel parameters are used (e.g. kvm.nested). Therefore, after a
> >> restart we cannot be sure that the QEMU capabilities remain the same.
> >> How can we solve this problem?
> > Hi,
> > thanks for bringing up this issue, we kind of already know about it
> > but it's good idea to discuss it publicly.
> >> I have come up with two ways:
> >> - reprobe the capabilities with every host reboot
> > This is the solution that was agreed on but nobody was motivated enough
> > to write the code :).
> First - thank you for the quick answer :)
> Would it be okay if the solution depends on systemd?
Not really. It may of course use systemd if it's present, but it should
work even on systems without systemd.
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