amd64 xen hvm shutdown

[Richard Kojedzinszky]

Dear Colin,

I am not familiar with the method, but what happens exactly when I 
issue xm shutdown on the host ?
How does the inner guest handle it? Does it simply send a signal to init, 
or does to host emulate the press of the power button?

Thanks in advance,

Kojedzinszky Richard
Euronet Magyarorszag Informatikai Zrt.

On Wed, 25 Jan 2012, Richard Kojedzinszky wrote:

> Date: Wed, 25 Jan 2012 11:40:47 +0100 (CET)
> From: Richard Kojedzinszky <krichy at tvnetwork.hu>
> To: Colin Percival <cperciva at freebsd.org>
> Cc: freebsd-xen at FreeBSD.org
> Subject: Re: amd64 xen hvm shutdown
> 
> Dear Colin,
>
> My config for this domain is here:
>
> kernel = "/usr/lib/xen-4.0/boot/hvmloader"
> builder = "hvm"
>
> name = 'db.real-charts.com'
> memory = 512
> vcpus = 1
> cpus = '1-3'
> disk = [
>        'phy:/dev/sys/db.real-charts.com-root,xvda,w',
>        'phy:/dev/sys/db.real-charts.com-swap,xvdb,w',
>        'phy:/dev/sys/db.real-charts.com-tmp,xvdc,w',
>        'phy:/dev/sys/db.real-charts.com-var,xvdd,w',
>        'phy:/dev/sys/db.real-charts.com-usr,xvde,w'
> ]
> vif = [ 'mac=00:16:3e:00:04:01,bridge=eth0' ]
>
> vnc = 1
> boot = "c"
> stdvga = 1
> localtime = 0
>
> hpet = 1
> acpi = 1
> apic = 1
> pae = 1
> usb = 0
>
> on_poweroff = "destroy"
> on_reboot = "restart"
> on_crash = "restart"
>
> But as I read the documentation, on_poweroff means what to do when the domain 
> powers itself off. But for me it seems, that xen sends a halt to the freebsd 
> domain, exactly as if I issue a
> # halt
> In that case, the domain does halt, and shows that the system is halted, and 
> press any key to reboot. Unfortunately I dont have a freebsd on real 
> hardware, so I dont know if issue a halt on that does it powers itself off.
>
> But when inside the domain, and I issue poweroff, it works as expected, I 
> guess it sends an acpi poweroff to xen, and then tha virtual machine gets 
> stopped.
>
> Regards,
>
> Kojedzinszky Richard
> Euronet Magyarorszag Informatikai Zrt.
>
> On Wed, 25 Jan 2012, Colin Percival wrote:
>
>> Date: Wed, 25 Jan 2012 02:16:27 -0800
>> From: Colin Percival <cperciva at freebsd.org>
>> To: Richard Kojedzinszky <krichy at tvnetwork.hu>
>> Cc: freebsd-xen at FreeBSD.org
>> Subject: Re: amd64 xen hvm shutdown
>> 
>> On 01/25/12 02:09, Richard Kojedzinszky wrote:
>>> I am looking for a solution to be able to shutdown my freebsd 9.0 amd64 
>>> xen hvm
>>> domain from outside, from the host. Precisely, when the host is halted, it
>>> issues an
>>> # xm shutdown domain --halt --wait
>>> 
>>> to the domain, and the domain does not poweroff. It behaves as if I issue 
>>> a halt
>>> inside of it, and not a poweroff. Is there a way to have it power down 
>>> itself?
>> 
>> That sounds like a Xen configuration issue ("poweroff behaviour"?) rather 
>> than a
>> FreeBSD issue to me.
>> 
>> -- 
>> Colin Percival
>> Security Officer, FreeBSD | freebsd.org | The power to serve
>> Founder / author, Tarsnap | tarsnap.com | Online backups for the truly 
>> paranoid
>> 
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