On Sat, 6/19/10, Kirby Zhou <[email protected]> wrote:
> What I want is to save current running guests automatically, and
> to restore saved guest automatically.

The state can be saved with "virsh save".

Never set a save file to autostart at boot (just a domain), but there's
no reason why someone couldn't add "virsh restore (dom) (fil)" in
rc.local or similar, including cycling through a directory in a simple
loop, in an init script.

Interesting, I'll have to check on this further.  There's no reason why
either Xen or KVM can't be started at boot from a state file.  Just never
looked into the KVM equivalent of this Xen "default state directory"
myself.

Virtualization Guides on virsh:  

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.5/html/Virtualization_Guide/chap-Virtualization-Managing_guests_with_virsh.html
  

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6-Beta/html/Virtualization/chap-Virtualization-Managing_guests_with_virsh.html


> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]
> On Behalf Of Bryan J. Smith
> Sent: Saturday, June 19, 2010 11:43 PM
> To: Red Hat Enterprise Linux 5 (Tikanga) discussion
> mailing-list
> Subject: Re: [rhelv5-list] What is the replacement of
> /var/lib/xen/save and
> xendomains service in KVM?
> 
> Kirby Zhou <[email protected]>
> wrote:
> > What is the replacement of /var/lib/xen/save and
> xendomains
> > service in KVM?    
> > With XEN, I can save my guest into the directory
> /var/lib/xen/save,
> > then xendomains services will restore the guest
> automatically
> > while booting. 
> > How can I do it with KVM? 
> 
> The HyperVisor-neutral way to do it (typically with
> "virsh") is
> covered in the Virtualization Guides of both RHEL 5.5 and
> RHEL 6 Beta:  
> 
> http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.5/html/Virtualiz
> ation_Guide/chap-Virtualization-Tips_and_tricks.html#sect-Virtualization-Tip
> s_and_tricks-Automatically_starting_guests  
> 
> http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6-Beta/html/Virtua
> lization/chap-Virtualization-Tips_and_tricks.html#sect-Virtualization-Tips_a
> nd_tricks-Automatically_starting_guests
> 
> "Automatically starting guests
> 
>   This example uses virsh to set a guest, TestServer,
> to
>   automatically start when the host boots.
> 
>     # virsh autostart TestServer
>     Domain TestServer marked as autostarted
> 
>   The guest now automatically starts with the host.
>   To stop a guest automatically booting use the
> --disable parameter
> 
>     # virsh autostart --disable TestServer
>     Domain TestServer unmarked as autostarted
> 
>   The guest no longer automatically starts with the
> host."


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