Xen users - Feb 2011 - Save and restore DomU (hvm) on Dom0 restart. CentOS 5.5 + Xen 3.4.3

What are the settings that I must specify to have DomU be saved and then 
automatically started on reboot of the physical server?

In my /etc/sysconfi/xendomains it points to a save folder (which does not exist)

My configuration files are located at /vm/cfg/vm-xxxx/vm-xxxx.xen
 
In my config file I have:
on_poweroff = ''destroy''
on_reboot = ''restart''
on_crash = ''restart''
on_xend_stop = ''suspend''
on_xend_start = ''start''

But, after calling "shutdown -r now", the DomUs are turned off and do
not start.

My DomU''s are Windows 2003 Servers running in HVM virtualization.

Alexander Zherdev
azherdev@yahoo.com

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

On Sat, Feb 5, 2011 at 11:55 PM, Alexander Zherdev <azherdev@yahoo.com>
wrote:
> What are the settings that I must specify to have DomU be saved and then
> automatically started on reboot of the physical server?
>
> In my /etc/sysconfi/xendomains it points to a save folder (which does not
> exist)
>
> My configuration files are located at /vm/cfg/vm-xxxx/vm-xxxx.xen
>
> In my config file I have:
> on_poweroff = ''destroy''
> on_reboot = ''restart''
> on_crash = ''restart''
> on_xend_stop = ''suspend''
> on_xend_start = ''start''
> But, after calling "shutdown -r now", the DomUs are turned off
and do not
> start.
>
> My DomU''s are Windows 2003 Servers running in HVM virtualization.
You need pv drivers for the shutdown to work properly. So, for example
you could use the gplpv drivers for windows.

For a domain to be started at boot, there needs to be a symlink to its
config file in /etc/xen/auto

Hope that helps.

Thanks,
Todd

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Thank you for responding Todd,

Do I need to have the PV drivers to save the state?

What I want to happen is:

When shutdown/restart is initiated:

1. Xen pauses all running VMs
2. Xen saves the state of all VMs to disk (memory and cpu state)
3. Xen shuts down
4. System shutsdown/restarts

When system is started/restarted:

1. Xen starts
2. Loads the state of all the VMs
3. Resumes VMs

I do *NOT* want the VMs to know they were shutdown. Hickup with network 
connections/time is the only thing that will be perceived.
 

Alexander Zherdev
azherdev@yahoo.com




________________________________
From: Todd Deshane <todd.deshane@xen.org>
To: Alexander Zherdev <azherdev@yahoo.com>
Cc: xen-users@lists.xensource.com
Sent: Tue, February 8, 2011 8:32:48 PM
Subject: Re: [Xen-users] Save and restore DomU (hvm) on Dom0 restart. CentOS 5.5
+ Xen 3.4.3

On Sat, Feb 5, 2011 at 11:55 PM, Alexander Zherdev <azherdev@yahoo.com>
wrote:
> What are the settings that I must specify to have DomU be saved and then
> automatically started on reboot of the physical server?
>
> In my /etc/sysconfi/xendomains it points to a save folder (which does not
> exist)
>
> My configuration files are located at /vm/cfg/vm-xxxx/vm-xxxx.xen
>
> In my config file I have:
> on_poweroff = ''destroy''
> on_reboot = ''restart''
> on_crash = ''restart''
> on_xend_stop = ''suspend''
> on_xend_start = ''start''
> But, after calling "shutdown -r now", the DomUs are turned off
and do not
> start.
>
> My DomU''s are Windows 2003 Servers running in HVM virtualization.
You need pv drivers for the shutdown to work properly. So, for example
you could use the gplpv drivers for windows.

For a domain to be started at boot, there needs to be a symlink to its
config file in /etc/xen/auto

Hope that helps.

Thanks,
Todd

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users