[Users] forced shutdown with client agent

[Omer Frenkel]

----- Original Message -----
> From: "Itamar Heim" <iheim at redhat.com>
> To: "Michal Skrivanek" <michal.skrivanek at redhat.com>
> Cc: "Gal Hammer" <ghammer at redhat.com>, users at ovirt.org, "Simon Grinberg" <sgrinber at redhat.com>
> Sent: Tuesday, April 23, 2013 12:19:25 AM
> Subject: Re: [Users] forced shutdown with client agent
> 
> On 04/22/2013 01:59 PM, Michal Skrivanek wrote:
> >> >
> >> >----- Original Message -----
> >>> >>From: "Michal Skrivanek"<michal.skrivanek at redhat.com>
> >>> >>To:users at ovirt.org, "Thomas Scofield"<tscofield at gmail.com>, "Vinzenz
> >>> >>Feenstra"<vfeenstr at redhat.com>, "Barak
> >>> >>Azulay"<bazulay at redhat.com>, "Gal Hammer"<ghammer at redhat.com>
> >>> >>Sent: Monday, April 22, 2013 11:48:18 AM
> >>> >>Subject: Re: [Users] forced shutdown with client agent
> >>> >>
> >>> >>
> >>> >>On Apr 20, 2013, at 22:42 , Itamar Heim<iheim at redhat.com>  wrote:
> >>> >>
> >>>> >>>On 03/29/2013 04:58 AM, Thomas Scofield wrote:
> >>>>> >>>>I have run into a scenario after installing the client agent.  If
> >>>>> >>>>a VM
> >>>>> >>>>is shutdown, the client agent calls the shutdown command with a 1
> >>>>> >>>>minute
> >>>>> >>>>timeout.
> >>>>> >>>>
> >>>>> >>>>Dummy-2::INFO::2013-03-28
> >>>>> >>>>14:05:21,892::vdsAgentLogic::138::root::Shutting down (timeout =
> >>>>> >>>>30,
> >>>>> >>>>message = 'System Administrator has initiated shutdown of this
> >>>>> >>>>Virtual
> >>>>> >>>>Machine. Virtual Machine is shutting down.'
> >>>>> >>>>
> >>>>> >>>>Since the shutdown command is called with time parameter the VM
> >>>>> >>>>sets the
> >>>>> >>>>/etc/nologin file. When the VM is forced down the /etc/nologin
> >>>>> >>>>file is
> >>>>> >>>>not cleared and when it comes back up only root can login until
> >>>>> >>>>the
> >>>>> >>>>/etc/nologin file is cleared.
> >>>> >>>
> >>>> >>>hmmm, Vinzenz - should guest agent clear that on guest startup, if
> >>>> >>>guest agent set this at shutdown?
> >>>> >>>
> >>>>> >>>>
> >>>>> >>>>Is their some some reason the shutdown time is set to 30 seconds
> >>>>> >>>>(rounded up to 1 minute in the code)?  Are there any know issues
> >>>>> >>>>with
> >>>>> >>>>setting this to 0?
> >>> >>I wouldn't mind changing this to 0 by default if there are no
> >>> >>objections.
> >>> >>Barak, Gal, what do you think? Do you see any strong reason for
> >>> >>keeping a grace period?
> >> >
> >> >The idea was to allow a logged in user to orderly close his work right?
> >> >For that I'm not sure that even 30 seconds is enough.
> > For that typically sysadmins use 5 or 10 minutes. 30s is worthless, no one
> > would be able to react that fast…so to me this is the same as initiating
> > shutdown right away. It's graceful anyway and all common apps would save
> > the workspace on SIGTERM anyway. Well, does it even do anything on
> > Windows?

i think its like doing a clean shutdown from within the guest

> > That's why I'd vote for 0. And keep is configurable in case you want to use
> > it, sure.
> >
> 
> do we allow users to cancel the shutdown?

i think 'shutdown -a' should work on windows, no?

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