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

[Nikolay Nikolaev]

On Wed, Jun 18, 2014 at 3:35 PM, Michael S. Tsirkin <address@hidden> wrote:

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 <address@hidden> 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 <address@hidden>
>     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.

Any place in the source where we can see example of similar behaviour?
 

You must also check log feature and return failure.

Should this happen on the QEMU side? Is this the log feature of the device?

regards,
Nikolay Nikolaev

 

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