Re: [Qemu-devel] vhost-user: migration?

["Michael S. Tsirkin" <mst@redhat.com>]

On Wed, Jun 18, 2014 at 02:41:15PM +0300, Nikolay Nikolaev wrote:
> 
> 
> 
> On Wed, Jun 18, 2014 at 2:29 PM, Michael S. Tsirkin <mst@redhat.com> wrote:
> 
>     On Wed, Jun 18, 2014 at 02:24:32PM +0300, Nikolay Nikolaev wrote:
>     > Hello,
>     >
>     > On Wed, Jun 18, 2014 at 12:33 PM, Michael S. Tsirkin <mst@redhat.com>
>     wrote:
>     >
>     >     Just a query whether migration works for you
>     >     guys with vhost-user and snabbswitch.
>     >
>     >
>     > I am not aware of anyone ever did such tests.
>     >
>     >
>     >     vhost user code seems to have enough hooks in
>     >     place to make it work, but was it tested
>     >     in practice?
>     >
>     >
>     >
>     > Can you give some pointers of a simple/quick test scenario. Maybe we'll
>     be able
>     > to set it up.
> 
> 
>     Basically migrate while doing networking :)
> 
>     Does your vhost server have code to set bits in the memory log
>     when logging is enabled?
> 
> 
> No - we didn't implement this feature.

Interesting. In that case vhost user should for now
block migration.
You must also check log feature and return failure.


> 
>     The log address is supplied to VHOST_SET_LOG_BASE and log_guest_addr.
> 
> 
>     >
>     >
>     >     --
>     >     MST
>     >
>     >
>     > regards,
>     > Nikolay Nikolaev
> 
> 
> regards,
> Nikolay Nikolaev