Re: [Qemu-devel] [Xen-devel] [PATCHv3] QEMU(upstream): Disable xen's use of O_DIRECT by default as it results in crashes.

[Stefano Stabellini]

On Tue, 19 Mar 2013, Paolo Bonzini wrote:
> Il 19/03/2013 16:13, Stefano Stabellini ha scritto:
> > This patch only impacts the PV backend in QEMU, not the IDE interface.
> > PV frontends and backends always disconnect and reconnect during
> > save/restore.
> > So we can be *certain* that bdrv_close at the sender side is called
> > before the new connection is established at the receiver side.
> 
> >From the little I remember about Xen, they go to XenbusStateClosed on
> the source before invoking the suspend hypercall?  And then restart on
> the destination?

That's right

> If so, that sounds right.  Thanks for finding an elegant solution.

Thank you :)