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VSOCK is a new transport that allows us to efficiently expose any network service (such as a network filesystem) from hypervisors to guests, without doing any IP plumbing.

The driving use case behind this is the desire to have an efficient and secure mechanism for exposing CephFS into OpenStack guests.  This involves changes all the way up the stack (kernel-qemu-libvirt-nova-manila)

We need libvirt to provide an extended <filesystem> element that can configure NFS/VSOCK to expose filesystems to guests.

Related mailing list thread: http://www.spinics.net/linux/fedora/libvir/msg129462.html

Stefan's Qemu and kernel changes are here:
http://qemu-project.org/Features/VirtioVsock

The NFS-ganesha development branch already has VSOCK support:
https://github.com/nfs-ganesha/nfs-ganesha/tree/next

Related Nova spec:
https://review.openstack.org/#/c/310050/5

I noticed bz#1294884 is the same feature.  Mark this one a duplicate since the other BZ has "depends on" relationships with other relevant BZs.

*** This bug has been marked as a duplicate of bug 1294884 ***