Re: [Qemu-devel] [PATCH 02/18] Introduce read() to FdMigrationState.

[Yoshiaki Tamura]

2011/2/10 Daniel P. Berrange <address@hidden>:
> On Thu, Feb 10, 2011 at 10:54:01AM +0100, Anthony Liguori wrote:
>> On 02/10/2011 10:30 AM, Yoshiaki Tamura wrote:
>> >Currently FdMigrationState doesn't support read(), and this patch
>> >introduces it to get response from the other side.
>> >
>> >Signed-off-by: Yoshiaki Tamura<address@hidden>
>>
>> Migration is unidirectional.  Changing this is fundamental and not
>> something to be done lightly.
>
> Making it bi-directional might break libvirt's save/restore
> to file support which uses migration, passing a unidirectional
> FD for the file. It could also break libvirt's secure tunnelled
> migration support which is currently only expecting to have
> data sent in one direction on the socket.

Hi Daniel,

IIUC, this patch isn't something to make existing live migration
bi-directional.  Just opens up a way for Kemari to use it.  Do
you think it's dangerous for libvirt still?

Thanks,

Yoshi

>
> Daniel
> --
> |: http://berrange.com      -o-    http://www.flickr.com/photos/dberrange/ :|
> |: http://libvirt.org              -o-             http://virt-manager.org :|
> |: http://autobuild.org       -o-         http://search.cpan.org/~danberr/ :|
> |: http://entangle-photo.org       -o-       http://live.gnome.org/gtk-vnc :|
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
> the body of a message to address@hidden
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>