[ovirt-users] hot plug memory in el7

[Nathanaël Blanchet]

Le 09/12/2015 17:12, Michal Skrivanek a écrit :
>
>> On 09 Dec 2015, at 14:54, Nathanaël Blanchet <blanchet at abes.fr 
>> <mailto:blanchet at abes.fr>> wrote:
>>
>>
>>
>> Le 08/12/2015 11:43, Michal Skrivanek a écrit :
>>>
>>>
>>> On 08 Dec 2015, at 11:20, Yaniv Dary <ydary at redhat.com> wrote:
>>>
>>>>
>>>>
>>>> Yaniv Dary Technical Product Manager Red Hat Israel Ltd. 34 
>>>> Jerusalem Road Building A, 4th floor Ra'anana, Israel 4350109 Tel : 
>>>> +972 (9) 7692306 8272306 Email: ydary at redhat.com 
>>>> <mailto:ydary at redhat.com> IRC : ydary
>>>>
>>>> On Tue, Dec 8, 2015 at 2:03 AM, Nathanaël Blanchet 
>>>> <blanchet at abes.fr> wrote:
>>>>
>>>>     Hi all,
>>>>
>>>>     I may miss something but according to
>>>>     http://www.ovirt.org/Features/Hot_Plug_Memory, ovirt 3.6 was
>>>>     supposed to support the hot plug memory feature. Nothing
>>>>     happens in reality when increasing memory on a running vm with
>>>>     centos7.
>>>>     I found this :
>>>>     http://lists.ovirt.orgpipermail/kimchi-devel/2015-June/010714.html,
>>>>     and it seems that el7.1 can't support the feature because of
>>>>     its libvirt version (1.2.8) while the required one is 1.2.14.
>>>>     I didn't test, but I guess F22 supports it.
>>>>     Is there any chance that el7.2 would support it with a
>>>>     backported libvirtd?
>>>>
>>>>
>>>> It does support it, but only hot-plug not hot-unplug.
>>>>
>>>>     Or will a dedicated libvirt rhev package be released so as the
>>>>     downstream to support it (like qemu-kvm for live snapshot some
>>>>     time ago)?
>>>>     Documentation and limitation of the libvirt version for hot
>>>>     plug memory are difficult to find in the ovirt wiki and more
>>>>     generally on the web.
>>>>     Maybe the feature has been postponed to a 3.6.z release?
>>>>
>>>>
>>>> I works with fedora and you can use it currently with this feature.
>>>
>>> It works on centos too, qemu-kvm-ev 2.3 we distribute in ovirt repo
>> Hello, no qemu-kvm-ev 2.3 is not enough:
>> [root at fuji ~]# qemu-img --version
>> qemu-img version 2.3.0 (qemu-kvm-ev-2.3.0-29.1.el7), Copyright (c) 
>> 2004-2008 Fabrice Bellard
>> and
>> vdsm-4.17.10.1-0.el7.centos.noarch
>>
>> I get this error message each time I try to hot add memory :
>> Dec  9 11:18:00 fuji journal: unsupported configuration: unknown 
>> device type ‘memory'
>
> was the VM started in a 3.6 cluster?
sure, on a full 3.6 cluster. I stopped/restarted them. I restarted vdsmd 
and libvirtd
> Or how/when did you create it?
those vms have been created before uprading to 3.6, some of them from a 
blank template, other one based on a el7 template.
>
> Thanks,
> michal
>
>>
>> I tried to restart vdsmd but it is the same, even on other hosts.
>>
>> any help will be appreciated, thank you.
>>>
>>>>     Thank you for your help
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>>>>
>>>>
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>>
>> -- 
>> Nathanaël Blanchet
>>
>> Supervision réseau
>> Pôle Infrastrutures Informatiques
>> 227 avenue Professeur-Jean-Louis-Viala
>> 34193 MONTPELLIER CEDEX 5 	
>> Tél. 33 (0)4 67 54 84 55
>> Fax  33 (0)4 67 54 84 14
>> blanchet at abes.fr  
>

-- 
Nathanaël Blanchet

Supervision réseau
Pôle Infrastrutures Informatiques
227 avenue Professeur-Jean-Louis-Viala
34193 MONTPELLIER CEDEX 5 	
Tél. 33 (0)4 67 54 84 55
Fax  33 (0)4 67 54 84 14
blanchet at abes.fr

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