Messages in this thread | | | Date | Mon, 22 Mar 2010 13:23:26 +0000 | From | "Richard W.M. Jones" <> | Subject | Re: [RFC] Unify KVM kernel-space and user-space code into a single project |
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On Mon, Mar 22, 2010 at 01:05:13PM +0000, Daniel P. Berrange wrote: > This is close to the way libguestfs already works. It boots QEMU/KVM pointing > to a minimal stripped down appliance linux OS image, containing a small agent > it talks to over some form of vmchannel/serial/virtio-serial device. Thus the > kernel in the appliance it runs is the only thing that needs to know about the > filesystem/lvm/dm on-disk formats - libguestfs definitely does not want to be > duplicating this detailed knowledge of on disk format itself. It is doing > full read-write access to the guest filesystem in offline mode - one of the > major use cases is disaster recovery from a unbootable guest OS image.
As Dan said, the 'daemon' part is separate and could be run as a standard part of a guest install, talking over vmchannel to the host. The only real issue I can see is adding access control to the daemon (currently it doesn't need it and doesn't do any). Doing it this way you'd be leveraging the ~250,000 lines of existing libguestfs code, bindings in multiple languages, tools etc.
Rich.
-- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones New in Fedora 11: Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 70 libraries supprt'd http://fedoraproject.org/wiki/MinGW http://www.annexia.org/fedora_mingw
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