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kvm image is not installing
Posted: 2017/04/25 18:18:09
by belgeadmin
Hello,
Im using CentOS Linux release 7.3.1611 (Core) and tried to install kvm today on host but i cant install image
Its locked in starting. Before i start virtual machine in hardware configuration there is always an error "libvirt did not detect any uefi/ovmf firmware image on the host". But i continue to install and Its locked in starting.
After i checked service with "systemctl status libvirtd -l" i see some errors like that: Apr 25 21:07:27 centos71 libvirtd[7130]: Domain id=2 name='centos7.0' uuid=b91fcd85-e463-455c-a95e-a4316217f44d is tainted: high-privileges.
Is there anyone else who see this before?
Re: kvm image is not installing
Posted: 2017/05/03 09:54:06
by bertalanimre
How did you install libvirt?
How do you create the virtual machine?
How do you manage your machines? (virt-manager maybe?)
I suggest you should
on your system, then start virt-manager and install what you'll need.
Re: kvm image is not installing
Posted: 2017/05/04 12:35:16
by belgeadmin
i installed like that:
yum install virt-manager libvirt libvirt-phyton phyton-virtinst libvirt-client
Do you think there were some parts missing? i will try as you said. thank you
**edited
i installed as you said but i have same problem again.
After i start virt-manager i load the centos 7 image but its just waiting in the beginning...
Re: kvm image is not installing
Posted: 2017/05/05 06:32:03
by hunter86_bg
Where is this image located ? Is it in "/var/lib/libvirt/images" ? If not - try to temporarily disable selinux to verify that it's causing the issue via
Once you start the machine and everything is ok - then we can confirm that it's selinux.
Regarding the error: "libvirt did not detect any uefi/ovmf firmware image on the host" -Is this machine installed as UEFI (with simulated UEFI Bios) ?What is the setting for "Firmware" in the Overview Pane in Virt-Manager ?
If it is defined as UEFI - you can install the "OVMF" package and try again. Most probably this package is in the supplementary repo (at least RedHat's is), so first enable that repo.
Re: kvm image is not installing
Posted: 2017/05/05 06:50:47
by belgeadmin
First of all im using ubuntu on my laptop. I installed Vbox and installed Centos 7 into Vbox.
And now im trying to undertstand Centos virtulization so i try to use virt-manager inside Centos 7.
So i just mounted Centos DVD iso to my Vbox Centos 7 and try to install by virt-manager.
Do i have any mentality problem in this order?
Re: kvm image is not installing
Posted: 2017/05/05 06:56:33
by TrevorH
Yes, that would be a problem. You have to do "special stuff" to enable nested virtualization.
Re: kvm image is not installing
Posted: 2017/05/05 06:57:38
by owl102
belgeadmin wrote:First of all im using ubuntu on my laptop. I installed Vbox and installed Centos 7 into Vbox.
And now im trying to undertstand Centos virtulization so i try to use virt-manager inside Centos 7.
This is doomed to fail since VirtualBox does not support nested virtualization. See also:
https://www.virtualbox.org/ticket/4032
BTW: There is little special to "Centos virtulization". KVM is available on Ubuntu, and VirtualBox is available for CentOS as well.
Re: kvm image is not installing
Posted: 2017/05/05 12:27:28
by belgeadmin
Hımm its interesting because i can simulate same scenario with Solaris Zones easily
But i will search a little more. Thank you all
Re: kvm image is not installing
Posted: 2017/05/05 13:56:06
by owl102
belgeadmin wrote:Hımm its interesting because i can simulate same scenario with Solaris Zones easily
Solaris Zones is not a processor virtualization technique (also called full virtualization or whole-system virtualization), so one cannot compare Zones with KVM. And especially Solaris Zones don't use VT-x.
See also:
https://en.wikipedia.org/wiki/Operating ... ualization
Re: kvm image is not installing
Posted: 2017/05/05 19:40:17
by belgeadmin
owl102 wrote:belgeadmin wrote:Hımm its interesting because i can simulate same scenario with Solaris Zones easily
Solaris Zones is not a processor virtualization technique (also called full virtualization or whole-system virtualization), so one cannot compare Zones with KVM. And especially Solaris Zones don't use VT-x.
See also:
https://en.wikipedia.org/wiki/Operating ... ualization
Actually it was an aswer for your previous reply.
"This is doomed to fail since VirtualBox does not support nested virtualization. See also: "
I know zone is a OS virtulization technique but Oracle use also definition of "nested" for zones.