Re: Domain save/migrate issue

[Anthony Liguori <aliguori@us.ibm.com>]

Noam Taich wrote:
> Ok. So pause ALONE is not possible. But I didn't mean I'd do only a
> pause:
>
> Suspend writes all the info you just mentioned. And the save code just 
> writes the info that suspend left for it.
> So, lets tackle the problem in xen and/or the host.
>
> If a change was entered into the suspend code, say, a special mode,
> "pseudoSuspend" was added, in which the function writes all that same
> info 
>   
Why exactly would this be better than just making domain's unsuspendable?

All it would take is some hypervisor plumbing...

Regards,

Anthony Liguori
> Into that very same place it wrote to before (or any other cozy spot we
> can access from the save function), but does NOT actually suspend the
> domain
> (Ideally, it would suspend nothing. But, if necessary, it can resume
> everything instead of calling the actual shutdown code).
>
> The save function doesn't need to know anything now that it didn't know
> before...
>
>
>