Re: [Qemu-devel] [PATCHv2 2/6] cpus: flush all requests on each vm stop

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

On Tue, Nov 30, 2010 at 10:45:40AM -0200, Marcelo Tosatti wrote:
> On Wed, Nov 24, 2010 at 05:52:58PM +0200, Michael S. Tsirkin wrote:
> > Make sure disk is in consistent state.
> > 
> > Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> > Tested-by: Jason Wang <jasowang@redhat.com>
> > ---
> >  cpus.c |    2 ++
> >  1 files changed, 2 insertions(+), 0 deletions(-)
> > 
> > diff --git a/cpus.c b/cpus.c
> > index 91a0fb1..d421a96 100644
> > --- a/cpus.c
> > +++ b/cpus.c
> > @@ -110,6 +110,8 @@ static void do_vm_stop(int reason)
> >          cpu_disable_ticks();
> >          vm_running = 0;
> >          pause_all_vcpus();
> > +        qemu_aio_flush();
> > +        bdrv_flush_all();
> 
> Can you move these after vm_state_notify? qemu-kvm stops vcpus there.
> 
> >          vm_state_notify(0, reason);
> >          monitor_protocol_event(QEVENT_STOP, NULL);
> >      }

Like this:

cpus: flush all requests on each vm stop

Make sure disk is in consistent state.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Jason Wang <jasowang@redhat.com>

---

diff --git a/cpus.c b/cpus.c
index 91a0fb1..d421a96 100644
--- a/cpus.c
+++ b/cpus.c
@@ -110,6 +110,8 @@ static void do_vm_stop(int reason)
         cpu_disable_ticks();
         vm_running = 0;
         pause_all_vcpus();
+        qemu_aio_flush();
+        bdrv_flush_all();
         vm_state_notify(0, reason);
         monitor_protocol_event(QEVENT_STOP, NULL);
     }