Re: [Xen-devel] reboot dom0 without vps downtime

[Juergen Gross <jgross@xxxxxxxx>]

On 17/03/17 09:23, Vasiliy Tolstov wrote:
> 2017-03-17 11:21 GMT+03:00 Juergen Gross <jgross@xxxxxxxx>:
>> Not yet.
> 
> 
> Does this planned or how can i do that if i can write some code ? =)

(Dropping xen-users)

I have plans for the future, but I'm not sure when I'll have enough
time for it.

Any help on this topic is welcome, of course!

I think (at least) the following features are missing:

- capability to specify a (new) dom0 kernel and initrd for reboot of
  dom0: both must be transferred to the hypervisor in a memory buffer
  which will be used for the reboot
- dom0 reboot capability in hypervisor using the kernel and initrd
  from the memory buffer, without destroying other domains
- dom0 has to check for presence of xenstore-stubdom before trying to
  create it. In case xenstore is already existing connect to it and
  re-establish needed connections to other domains, don't auto-start
  any other domains in this case

I'm sure there are lots of other little pieces missing, but those can
be addressed after above main features are available.


Juergen

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