Re: [libvirt] [RFC] Question regarding the validity of QEMU capabilities
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 :).
- check for every possible change in virQEMUCapsIsValid... (this is
already done for KVM). In my opinion this is not the way to go.
Pavel
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