New KVM features

[bert64]

KVM 1.4 has a few new features, x-data-plane for improved virtio block performance and machine type "q35" which is supposed to become the default in the future...

Is it possible/planned for proxmox to introduce support for these features?

In particular, q35 support is intended to be the default in the future, but changing existing machines to use it can cause problems... It may be necessary to have an option to choose the machine type so that existing machines can go back to the old options while new ones can default to the new settings.

I understand x-data-plane has few caveats which would make it unsuitable for use by default in most cases, but it may be worth testing.

 

[dietmar]

In particular, q35 support is intended to be the default in the future, but changing existing machines to use it can cause problems... It may be necessary to have an option to choose the machine type so that existing machines can go back to the old options while new ones can default to the new settings.

yes, we may need to add such option in future.

I understand x-data-plane has few caveats which would make it unsuitable for use by default in most cases, but it may be worth testing.

This option is very experimental, and breaks other things. But nothing prevents you from testing (simply test using kvm directly). In future, using this should be fully compatible, so that may get the default if it is really faster.