[Engine-devel] watchdog

[Itamar Heim]

On 04/14/2013 05:59 PM, Doron Fediuck wrote:
>
> ----- Original Message -----
>> From: "Itamar Heim" <iheim at redhat.com>
>> To: "Laszlo Hornyak" <lhornyak at redhat.com>
>> Cc: "engine-devel" ovirt.org>
>> Sent: Sunday, April 14, 2013 5:04:55 PM
>> Subject: Re: [Engine-devel] watchdog
>>
>> On 04/11/2013 03:54 PM, Laszlo Hornyak wrote:
>>> Hi,
>>>
>>> It is not really an optimization based only on console connection. In my
>>> opinion this should be a decision factor when determining which VM to
>>> migrate from an overloaded host. If it is a desktop and no console
>>> connection, then it is better candidate than a desktop with console
>>> connection or a server with or without console connection. Basically this
>>> logic would just want to minimize the pain caused by the short lag when a
>>> VM is live migrated.
>>>
>>> Can I assume that a Desktop is only used when a console is connected?
>>
>> connected by spice? by vnc to host or to guest? by rdp? by remote
>> debugging to it from a remote machine, by someone developing on it with
>> ssh, etc...
>>
>> i agree the general use case you are describing make sense, but i rather
>> we model scheduling decisions directly if/where possible
>
> Some parts of this thread are looking for perfection and on the way
> creating additional tasks and reviewing cycles that are only remotely
> related to the watchdog device;
>
> Yes, we should try and reduce the existing differentiation between
> desktop and a server.
>
> No, this feature is not about closing that gap. Watchdog device is
> about handling guest crash.
>
> I strongly suggest that merging desktop and server dialogues will be
> done as a different feature. The watchdog feature will take one step in
> the 'right' direction- adding the (currently missing) HA tab into the
> desktop dialog based on current design.
>

1. it is a different task.
2. i'm suggesting you can drop the code doing that distinction for the 
watchdog in this patch.

> Doron
>