[libvirt] [PATCH] qemu: Set migration FD blocking

[Eric Blake]

On 03/26/2013 08:55 AM, Michal Privoznik wrote:
> Since we switched from direct host migration scheme to the one,
> where we connect to the destination and then just pass a FD to a
> qemu, we have uncovered a qemu bug. Qemu expects migration FD to
> block. However, we are passing a nonblocking one which results in
> cryptic error messages like:
> 
>   qemu: warning: error while loading state section id 2
>   load of migration failed
> 
> The bug is already known to Qemu folks, but we should workaround
> already released Qemus. Patch has been originally proposed by Stefan
> Hajnoczi <stefanha at gmail.com>
> ---
>  src/qemu/qemu_migration.c | 7 +++++++
>  1 file changed, 7 insertions(+)

Thanks for figuring it all out!  I definitely hit this one, while trying
to help someone on IRC.

ACK, and definitely 1.0.4 material.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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