[ovirt-users] [FC22] testing oVirt 3.6.2 : Hot plug memory not working

[Yaniv Dary]

Try:

   1. Look for memory that appears offline.

   Run this command to check the state of the memory:

   grep line /sys/devices/system/memory/*/state

   2. When memory appears offline, run this command to set it to online:

   echo online >/sys/devices/system/memory/memory[number]/state


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
IRC : ydary


On Mon, Feb 1, 2016 at 3:46 PM, wodel youchi <wodel.youchi at gmail.com> wrote:

> What do mean?
> I have to use RHEL7? What about Centos7 is this unavailable?
>
> Regards.
>
> 2016-02-01 14:12 GMT+01:00 Yaniv Dary <ydary at redhat.com>:
>
>> You need to use EL7 guest.
>>
>> 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
>> IRC : ydary
>>
>>
>> On Mon, Feb 1, 2016 at 1:16 PM, wodel youchi <wodel.youchi at gmail.com>
>> wrote:
>>
>>> Hi,
>>>
>>> I tried with the Centos6x64 VM, I didn't work, in ovirt's webui I have
>>> this error :
>>>
>>> VDSM Noveria command failed: unsupported configuration: unknown device
>>> type 'memory'
>>> Failed to hot set memory to VM mail10. Underlying error message:
>>> unsupported configuration: unknown device type 'memory'
>>>
>>> Looking into /sys/devices/system/memory there is no new memory banks
>>> added.
>>>
>>> But, I tested with another VM, Centos7x64 which I updated with latest
>>> packages : CentOS Linux release 7.2.1511 (Core)
>>>
>>> I tried to add memory, but I had the same error on ovirt's webui, I did
>>> not work neither with el6x64 or el7x64
>>>
>>> and /sys/devices/system/memory didn't change, there are no new entries
>>>
>>> Regards
>>>
>>> 2016-02-01 10:30 GMT+01:00 Nathanaël Blanchet <blanchet at abes.fr>:
>>>
>>>> Hi,
>>>>
>>>> the hot add features starts working out of the box from centos 7.2
>>>> guest.
>>>> On previous el7.x, two ways to do that:
>>>>
>>>> 5.2. How to online memory
>>>>  ------------
>>>> Even if the memory is hot-added, it is not at ready-to-use state.
>>>> For using newly added memory, you have to "online" the memory block.
>>>>
>>>> For onlining, you have to write "online" to the memory block's state
>>>> file as:
>>>>
>>>> % echo online > /sys/devices/system/memory/memoryXXX/state
>>>>
>>>> or to be active at boot, add this udev rule in
>>>> /lib/udev/rules.d/55-ovirt-guest-agent.rules :
>>>>
>>>> SUBSYSTEM=="memory", ACTION=="add", TEST=="state",
>>>> ATTR{state}=="offline", ATTR{state}="online"
>>>>
>>>> I can't tell you if this works on el6 guest, but why not testing for us
>>>> ;)
>>>>
>>>> Le 01/02/2016 10:04, wodel youchi a écrit :
>>>>
>>>> Hi,
>>>>
>>>> I am using oVirt 3.6.2 on FC22 box, all-in-one installation, my purpose
>>>> is to test it.
>>>>
>>>> I am using a simple Desktop :
>>>> - one cpu core i5 3550 with 4 cores
>>>> - 2x4 Go of RAM
>>>>
>>>> I installed a Centos 6x64 VM with all updates + ovirt guest agent.
>>>>
>>>> I tried to augment the memory from 1024 to 1536 (+512Mo) it didn't work
>>>> I had to shutdown the VM for the change to take effect.
>>>>
>>>> Hot plug memory does it have something to do with the underneath
>>>> hardware?
>>>> or does it depend on the guest OS?
>>>> or something else?
>>>>
>>>>
>>>> Regards.
>>>>
>>>>
>>>> _______________________________________________
>>>> Users mailing listUsers at ovirt.orghttp://lists.ovirt.org/mailman/listinfo/users
>>>>
>>>>
>>>> --
>>>> 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 14blanchet at abes.fr
>>>>
>>>>
>>>> _______________________________________________
>>>> Users mailing list
>>>> Users at ovirt.org
>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>
>>>>
>>>
>>> _______________________________________________
>>> Users mailing list
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>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
>>>
>>
>
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