[ovirt-users] Ovirt and power saving

[Donny Davis]

The powersaving policy is only applicable to the hosts, so if your low utilization threshold is below the power policy when you pause the vm, it should place the host into maintenance and migrate the paused vm (may cause problems).  I cannot test on my deployment, I am already down too many machines… however if you wait a couple days I can get you’re an answer as to whether it works on my deployment or not J

 

Donny D 

 

From: users-bounces at ovirt.org [mailto:users-bounces at ovirt.org] On Behalf Of Mario Giammarco
Sent: Tuesday, January 13, 2015 8:23 AM
To: Artyom Lukianov
Cc: users at ovirt.org
Subject: Re: [ovirt-users] Ovirt and power saving

 

I mean that I know that I can set a power saving policy, it is a very nice thing.

I need to be sure that I can pause/suspend (not shutdown) virtual machines.

I also need that, if I suspend enough virtual machines ovirt shutdowns server to save power following the power save policy.

 

Otherwise is it possible to manually shutdown a server forcing ovirt to migrate vms to the only one powered up?

 

Basically it is a "manual power saving" mode.

 

Thanks again,

Mario

 

2015-01-13 14:21 GMT+01:00 Artyom Lukianov <alukiano at redhat.com>:

Not really understand you, what you mean by "you can pause vm and so trigger the low
utilization parameter"?

----- Original Message -----
From: "Mario Giammarco" <mgiammarco at gmail.com>

To: "Artyom Lukianov" <alukiano at redhat.com>
Cc: users at ovirt.org
Sent: Tuesday, January 13, 2015 3:05:06 PM
Subject: Re: [ovirt-users] Ovirt and power saving

Thanks for reply.
I just want now to  be sure that you can pause vm and so trigger the low
utilization parameter

2015-01-13 12:45 GMT+01:00 Artyom Lukianov <alukiano at redhat.com>:

> We have power saving policy that also have possibility to poweroff
> hosts(via power management), you can configure power saving policy
> parameters for you purpose(HighUtilization can have values from 50-100 and
> LowUtilization 0-49), so you can set LowUtilization=0 and
> HighUtilization=50, so load balancing will try migrate all vms on one
> host(if cpu utilization less that 50). And also you can set parameter
> "HostsInReserve" to 0 if you do not want additional hosts in reserve.
>
> ----- Original Message -----
> From: "Mario Giammarco" <mgiammarco at gmail.com>
> To: users at ovirt.org
> Sent: Tuesday, January 13, 2015 1:30:38 PM
> Subject: [ovirt-users] Ovirt and power saving
>
> Hello,
> I would like to ask if it is possible to do this use case with ovirt:
>
> 1) two servers powered on
> 2) operator suspend some virtual machines
> 3) load falls down
> 4) ovirt shutdown one server
>
> Then operator unpauses virtual machines and ovirt starts again the 2nd
> server.
>
> Thanks,
> Mario
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>

 

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