[Engine-devel] watchdog

Thu Apr 11 11:11:23 UTC 2013

----- Original Message -----
> From: "Laszlo Hornyak" <lhornyak at redhat.com>
> To: "Yair Zaslavsky" <yzaslavs at redhat.com>
> Cc: "Tomas Jelinek" <tjelinek at redhat.com>, "engine-devel" <engine-devel at ovirt.org>
> Sent: Thursday, April 11, 2013 1:57:04 PM
> Subject: Re: [Engine-devel] watchdog
> 
> No what I meant is that
> if the VM is a server {
> not having a console connection to it does not mean that it is not used.

Used is a more general term than "someone is connected to" - for example, you may have a machine running some internal calculation which takes a considerable amount of time, and you may have a user
that performs ssh to that machine (let's say once in an hour) and runs some utility that reports the status of the calculation.

> }
> 
> Therefore desktops on the same host with no console connection, they may be
> better candidates for migration. You can connect to servers.
> 
> ----- Original Message -----
> > From: "Yair Zaslavsky" <yzaslavs at redhat.com>
> > To: "Tomas Jelinek" <tjelinek at redhat.com>
> > Cc: "Laszlo Hornyak" <lhornyak at redhat.com>, "engine-devel"
> > <engine-devel at ovirt.org>
> > Sent: Thursday, April 11, 2013 12:26:35 PM
> > Subject: Re: [Engine-devel] watchdog
> > 
> > 
> > 
> > ----- Original Message -----
> > > From: "Tomas Jelinek" <tjelinek at redhat.com>
> > > To: "Laszlo Hornyak" <lhornyak at redhat.com>
> > > Cc: "engine-devel" <engine-devel at ovirt.org>
> > > Sent: Thursday, April 11, 2013 11:33:19 AM
> > > Subject: Re: [Engine-devel] watchdog
> > > 
> > > Good that you have come up with this! So we will make sure to keep this
> > > info.
> > > Thnx for coming up with it!
> > > 
> > > ----- Original Message -----
> > > > From: "Laszlo Hornyak" <lhornyak at redhat.com>
> > > > To: "Tomas Jelinek" <tjelinek at redhat.com>
> > > > Cc: "engine-devel" <engine-devel at ovirt.org>
> > > > Sent: Thursday, April 11, 2013 10:25:28 AM
> > > > Subject: Re: [Engine-devel] watchdog
> > > > 
> > > > 
> > > > 
> > > > ----- Original Message -----
> > > > > From: "Tomas Jelinek" <tjelinek at redhat.com>
> > > > > To: "Laszlo Hornyak" <lhornyak at redhat.com>
> > > > > Cc: "engine-devel" <engine-devel at ovirt.org>
> > > > > Sent: Thursday, April 11, 2013 10:02:16 AM
> > > > > Subject: Re: [Engine-devel] watchdog
> > > > > 
> > > > > 
> > > > > 
> > > > > ----- Original Message -----
> > > > > > From: "Laszlo Hornyak" <lhornyak at redhat.com>
> > > > > > To: "Itamar Heim" <iheim at redhat.com>
> > > > > > Cc: "engine-devel" <engine-devel at ovirt.org>
> > > > > > Sent: Thursday, April 11, 2013 9:56:32 AM
> > > > > > Subject: Re: [Engine-devel] watchdog
> > > > > > 
> > > > > > Hi,
> > > > > > 
> > > > > > Isnt someone already working on removing the UI distinction between
> > > > > > server
> > > > > > and desktop?
> > > > > Indeed :)
> > > > > 
> > > > > > 
> > > > > > However the desktop/server distinction could be useful for
> > > > > > scheduling
> > > > > > information, I hope that will remain.
> > > > > There will be a combo box: "optimized for server/desktop". That one
> > > > > will set up the dialog like you would open the new server/desktop
> > > > > today.
> > > > > But you will be able to change them - it will be just some sugar. But
> > > > > there
> > > > > is no reason
> > > > > why would we enforce the disabling the e.g. soundcard for server. By
> > > > > default
> > > > > we will, but
> > > > > you can enable it if you want.
> > > > 
> > > > Ok, so in engine we will still have the VmType in vmStatic?
> > > > 
> > > > I think it would make sense to use it in scheduling / load balancing
> > > > - if a VM is a desktop and no user is connected to the console, then
> > > > the
> > > > VM
> > > > is not in use, therefore it is a good candidate for saving power
> > > > (hibernate,
> > > > migrate, shutdown, or any other bad things that can happen to a VM)
> > > > - if a VM is a server, usually no user connected, but it may still be
> > > > used
> > > > through its network. Therefore it may not be a good candidate to
> > > > migrate.
> > 
> > is this indeed a valid assumption ("if VM is a server..." ) that a user
> > will
> > less connect to it?
> > 
> > 
> > > > 
> > > > > 
> > > > > > 
> > > > > > ----- Original Message -----
> > > > > > > From: "Itamar Heim" <iheim at redhat.com>
> > > > > > > To: "Laszlo Hornyak" <lhornyak at redhat.com>
> > > > > > > Cc: "engine-devel" <engine-devel at ovirt.org>, "Andrew Cathrow"
> > > > > > > <acathrow at redhat.com>
> > > > > > > Sent: Wednesday, April 10, 2013 9:38:15 PM
> > > > > > > Subject: Re: [Engine-devel] watchdog
> > > > > > > 
> > > > > > > On 04/10/2013 04:59 PM, Laszlo Hornyak wrote:
> > > > > > > > Hi,
> > > > > > > >
> > > > > > > > A new version of the watchdög feature is available in gerrit:
> > > > > > > >
> > > > > > > > http://gerrit.ovirt.org/13057 - db
> > > > > > > > http://gerrit.ovirt.org/13058 - bll
> > > > > > > > http://gerrit.ovirt.org/13059 - frontend
> > > > > > > > http://gerrit.ovirt.org/13060 - rest
> > > > > > > >
> > > > > > > > http://www.ovirt.org/Features/Watchdog_engine_support
> > > > > > > >
> > > > > > > > Since the last update the patchset has gone through major
> > > > > > > > changes
> > > > > > > > to
> > > > > > > > meet
> > > > > > > > the new architectureal and functional requirements.
> > > > > > > > Also because of the rewrite this is again a preview version
> > > > > > > > under
> > > > > > > > testing
> > > > > > > > with some missing functionality, therefore I re-introduced the
> > > > > > > > [wip]
> > > > > > > > flag
> > > > > > > > on it.
> > > > > > > >
> > > > > > > > Thx,
> > > > > > > > Laszlo
> > > > > > > > _______________________________________________
> > > > > > > > Engine-devel mailing list
> > > > > > > > Engine-devel at ovirt.org
> > > > > > > > http://lists.ovirt.org/mailman/listinfo/engine-devel
> > > > > > > >
> > > > > > > 
> > > > > > > just a thought after looking at the feature page having different
> > > > > > > HA
> > > > > > > dialog for server/desktop - I'd consider removing the distinction
> > > > > > > between desktop and server in the GUI wrt HA (i.e., just both
> > > > > > > have
> > > > > > > same
> > > > > > > set of options)
> > > > > > > 
> > > > > > > (not blocking for this patch)
> > > > > > > 
> > > > > > > 
> > > > > > _______________________________________________
> > > > > > Engine-devel mailing list
> > > > > > Engine-devel at ovirt.org
> > > > > > http://lists.ovirt.org/mailman/listinfo/engine-devel
> > > > > > 
> > > > > 
> > > > 
> > > _______________________________________________
> > > Engine-devel mailing list
> > > Engine-devel at ovirt.org
> > > http://lists.ovirt.org/mailman/listinfo/engine-devel
> > > 
> > 
> 