Re: [Qemu-devel] [PATCH 2/6] spice: client migration.

[Alon Levy]

On Mon, Jan 10, 2011 at 03:49:34PM +0000, Daniel P. Berrange wrote:
> On Mon, Jan 10, 2011 at 02:31:47PM +0100, Gerd Hoffmann wrote:
> > Handle spice client migration, i.e. inform a spice client connected
> > about the new host and connection parameters, so it can move over the
> > connection automatically.
> > 
> > Signed-off-by: Gerd Hoffmann <address@hidden>
> > ---
> >  hmp-commands.hx |   20 ++++++++++++++++++++
> >  qmp-commands.hx |   35 +++++++++++++++++++++++++++++++++++
> >  ui/qemu-spice.h |    1 +
> >  ui/spice-core.c |   40 ++++++++++++++++++++++++++++++++++++++++
> >  4 files changed, 96 insertions(+), 0 deletions(-)
> > 
> > diff --git a/hmp-commands.hx b/hmp-commands.hx
> > index df134f8..e6d8f36 100644
> > --- a/hmp-commands.hx
> > +++ b/hmp-commands.hx
> > @@ -815,6 +815,26 @@ ETEXI
> >      },
> >  
> >  STEXI
> > address@hidden spice_migrate_info @var{hostname} @var{port} @var{tls-port} 
> > @var{cert-subject}
> > address@hidden spice_migrate_info
> > +Set the spice connection info for the migration target.  The spice
> > +server will ask the spice client to automatically reconnect using the
> > +new parameters (if specified) once the vm migration finished
> > +successfully.
> > +ETEXI
> 
> 
> > +
> > +#if defined(CONFIG_SPICE)
> > +    {
> > +        .name       = "spice_migrate_info",
> > +        .args_type  = "hostname:s,port:i?,tls-port:i?,cert-subject:s?",
> > +        .params     = "hostname port tls-port cert-subject",
> > +        .help       = "send migration info to spice client",
> > +        .user_print = monitor_user_noop,
> > +        .mhandler.cmd_new = mon_spice_migrate,
> > +    },
> > +#endif
> > +
> > +STEXI
> >  @item snapshot_blkdev
> >  @findex snapshot_blkdev
> >  Snapshot device, using snapshot file as target if provided
> > diff --git a/qmp-commands.hx b/qmp-commands.hx
> > index 56c4d8b..24ada04 100644
> > --- a/qmp-commands.hx
> > +++ b/qmp-commands.hx
> > @@ -503,6 +503,41 @@ EQMP
> >      },
> >  
> >  SQMP
> > +spice_migrate_info
> > +------------------
> > +
> > +Set the spice connection info for the migration target.  The spice
> > +server will ask the spice client to automatically reconnect using the
> > +new parameters (if specified) once the vm migration finished
> > +successfully.
> > +
> > +Arguments:
> > +
> > +- "hostname":     migration target hostname (json-string)
> > +- "port":         spice tcp port for plaintext channels (json-int, 
> > optional)
> > +- "tls-port":     spice tcp port for tls-secured channels (json-int, 
> > optional)
> > +- "cert-subject": server certificate subject (json-string, optional)
> > +
> > +Example:
> > +
> > +-> { "execute": "spice_migrate_info",
> > +     "arguments": { "hostname": "virt42.lab.kraxel.org", "port": 1234 } }
> > +<- { "return": {} }
> 
> I'm wondering whether we should make this command more
> generic, because I could likely write up a VNC extension
> that provides the same functionality that SPICE has here.
> so, 'graphics_migrate_info @var{spice|vnc|...} ...other vars..'

Considering it isn't actually just graphics how about client_migrate_info?

> 
> Regards,
> Daniel
>