Hello,

Am Dienstag, 12. November 2019, 09:28:05 CET schrieb Fabian Arrotin:

On 10/11/2019 15:50, Günther J. Niederwimmer wrote:

...

is the broken KVM installation (UEFI) with the updates fixed on C8?

I have to update / install a new System, and don't like to find out I have a broken system again :-(.

Thanks for a answer,

Well, without giving any detail, and so under the assumption that we all know what you're talking about, that will be difficult for people on this list to answer your question (and statement) :) Can you so give us first :

• details about what you mean by "broken kvm installation (uefi)"

it is not possible to install a second KVM System (server) with UEFI enabled! this crash the host?

I go back to Centos 7 after 5 days testing :-(.

• link to bug report that confirms such statement about something broken

I have no :-(

• eventually links to list archives if you already mentioned it

this was the first question!

https://lists.centos.org/pipermail/centos/2019-October/173964.html

Hello,

thanks fort the answer..... but

Am Dienstag, 12. November 2019, 15:13:07 CET schrieb Jonathan Billings:

On Tue, Nov 12, 2019 at 09:28:05AM +0100, Fabian Arrotin wrote:

...

Well, without giving any detail, and so under the assumption that we all know what you're talking about, that will be difficult for people on this list to answer your question (and statement) :) Can you so give us first :

• details about what you mean by "broken kvm installation (uefi)"
• link to bug report that confirms such statement about something broken
• eventually links to list archives if you already mentioned it

I'm aware of this problem. Basically, around RHEL 7.3, the OVMF package (which provides the UEFI firmware) was updated to support Secure Boot, which it didn't previously.

https://access.redhat.com/errata/RHBA-2016:2608

On centos 7.X I can do this with the repository "CENTOS-QEMU-EV.repo" and the "kraxel.repo" for OVMF, this is working over years now.

Unfortunately, the new firmware didn't support the kvm provided by CentOS, it was built to support qemu-kvm-rhev, which isn't distributed as part of CentOS (iirc). Since UEFI boot in KVM was always listed as a Tech Preview, it wasn't really considered something that broke everything:

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/htm l-single/7.7_release_notes/index

"The Open Virtual Machine Firmware (OVMF) is available as a Technology Preview in Red Hat Enterprise Linux 7. OVMF is a UEFI secure boot environment for AMD64 and Intel 64 guests. However, OVMF is not bootable with virtualization components available in RHEL 7. Note that OVMF is fully supported in RHEL 8. "

This is my Problem (?), this will work ONLY, with the first installed Client a second client (host) is not possible to install with UEFI? This crash the whole system !!

According to the release notes for 8.0 (which should include CentOS 8), qemu-kvm supports UEFI guest boot. You probably need to make sure you have the edk2-ovmf.noarch firmware package installed to use it.

Yes this is OK, it is the default by installing KVM / libvirt / qemu but it do not work?

That is why i wrote this question.

Thanks for the answer,