Re: [ANNOUNCE] kvm-52 release

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Farkas Levente wrote:
> Avi Kivity wrote:
>   
>> Farkas Levente wrote:
>>     
>>> Avi Kivity wrote:
>>>   
>>>       
>>>> Farkas Levente wrote:
>>>>     
>>>>         
>>>>> first of all fully update your centos (a bit newer kernel), then i use
>>>>> these packages:
>>>>> http://www.lfarkas.org/linux/packages/centos/5/x86_64/
>>>>> use libvirtd and virt-manager too and start the guests from there. and
>>>>> start them manually paralell (i used to reboot the host when i update
>>>>> kvm, the start virt-manager and start each guests). 
>>>>>       
>>>>>           
>>>> IIRC virt-manager uses /usr/bin/kvm as its qemu launcher.  Maybe it is
>>>> running the old userspace.  Can you ensure that you are using the new
>>>> userspace and new kernel modules at all times?
>>>>     
>>>>         
>>> yes, it's sure. i always run rpm -Uvh kvm... kmod-kvm... and the reboot
>>> the host (just to be sure).
>>>
>>>   
>>>       
>> Installing the files means nothing.  You also need to make sure all your
>> tools use the right binaries (or use the command line directly).
>>     
>
> ohh come on. i use linux since 94 and i use redhat/rpm since redhat 3.0
> (not rhel3) i do know how to install and use packages and which files
> are called. there is no any other kvm in the given machine. ok i
> understand that you try to find some kind of reason why it's works for
> you and not for me but that's not the reason.
>   

Sure, I'd rather find out it's a configuration problem before I spend 
time debugging it rather than after, especially after other users 
reported success.

> anyway it'd be useful to if i can see which version of the userspace
> running ie. give a short message into the stslog on the host about the
> userspace version may be even a warning in case of the kmod and the
> userspace version are different, but currently that's all:
>   

kvm is designed to support mismatched kernel/userspace versions, so 
that's inappropriate for production.

-- 
Any sufficiently difficult bug is indistinguishable from a feature.


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