Re: [PATCH 2/2 V3] kvm tools: Add virtio-9p

[Sasha Levin <levinsasha928@gmail.com>]

On Fri, 2011-05-20 at 16:30 +0300, Pekka Enberg wrote:
> On Fri, 20 May 2011, Sasha Levin wrote:
> > This is the implementation of (most of) the original
> > 9p2000 protocol, without the .u or the .l extensions.
> >
> > How to use:
> > 1. Make sure kernel is compiled with:
> >    CONFIG_NET_9P=y
> >    CONFIG_NET_9P_VIRTIO=y
> >    CONFIG_NET_9P_DEBUG=y (At least until code is stable)
> >    CONFIG_9P_FS=y
> >
> > 2. Start KVM with '--virtio-9p <dirname>'. What happens now is that
> > a virtio transport with the name 'kvm_9p' is created. The server side
> > of the transport maps dirname to the root of the file system.
> >
> > 3. Within the guest, mount the fs:
> > mount -t 9p -otrans=virtio kvm_9p <local_dir> -oversion=9p2000
> > This will mount the 9p server to local_dir.
> >
> > Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
> 
> This is super cool feature, Sasha! Applied!
> 
> Would it be possible to have some test case for 'make check' that
> mounts a host directory in the guest? It'd be really helpful in
> making sure we don't break it.
> 
> Other thing is to make the hypervisor and guest kernel work
> together to automatically mount part of the host filesystem
> in the guest.

I'll do these two once I'm done monkeying with E820 later today :)

Regarding the second one, as we discussed - actually mounting it on the
guest will require a kernel patch, so it'll take some time.


-- 

Sasha.