[Users] [libvirt] Host local_host running without virtualization hardware acceleration

[Sandro Bonazzola]

Il 05/11/2013 10:49, Martin Kletzander ha scritto:
> On Tue, Nov 05, 2013 at 09:08:33AM +0100, Sandro Bonazzola wrote:
>> Hi,
>> I had to reinstall ovirt yesterday and now it seems that it doesn't work anymore.
>> I'm running nightly on Fedora 18.
>>  kernel-3.11.4-101.fc18.x86_64
>>  sanlock-2.8-1.fc18.x86_64
>>  libvirt-1.1.4-1.fc18.x86_64
>>  qemu-1.5.1-1.fc18.x86_64
>>  vdsm-4.13.0-93.gitea8c8f0.fc18.x86_64
>>  ovirt-engine-3.4.0-0.2.master.20131104192919.git3b65870.fc18.noarch
>>
>> engine-setup with all-in-one detects hardware virtualization and allow me to configure the system.
>> (it fails detecting engine health status due probably to recent changes in its URL, I'm already looking into it)
>>
>> Once added localhost to the engine, it has been moved to non operational mode saying
>> I don't have virtualization hardware acceleration anymore.
>>
>> I've found that:
>>
>> # modinfo kvm
>> filename:       /lib/modules/3.11.4-101.fc18.x86_64/kernel/arch/x86/kvm/kvm.ko
>> license:        GPL
>> author:         Qumranet
>> depends:
>> intree:         Y
>> vermagic:       3.11.4-101.fc18.x86_64 SMP mod_unload
>> parm:           min_timer_period_us:uint
>> parm:           ignore_msrs:bool
>> parm:           tsc_tolerance_ppm:uint
>> parm:           allow_unsafe_assigned_interrupts:Enable device assignment on platforms without interrupt remapping support. (bool)
>>
> 
> This is good, but AFAIK this module is not what provides /dev/kvm.
> Depending on the processor you're using, try checking 'kvm_intel' or
> 'kvm_amd'.  Also make sure both are loaded.

I've found that, missing kvm_intel.

> 
>> # /usr/bin/qemu-kvm
>> Could not access KVM kernel module: No such file or directory
>> failed to initialize KVM: No such file or directory
>>
>> looking at strace:
>> open("/dev/kvm", O_RDWR|O_CLOEXEC)      = -1 ENOENT (No such file or directory)
>>
> 
> What does ls -lZ /dev/kvm tell you?

it doesn't existed, now it's working again after modprobe kvm_intel

> 
>> Any clue on what may be happened?
>>
> 
> No idea, but I'm basing everything on the fact that it worked before
> the re-install, am I right?

right. something was loading that module automatically before reinstall and now I needed to create a conf file for having it loaded.

> 
> Martin
> 


-- 
Sandro Bonazzola
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