* Sasha Levin <levinsasha928@xxxxxxxxx> wrote: > On Tue, 2011-05-17 at 20:40 +0200, Ingo Molnar wrote: > > * Sasha Levin <levinsasha928@xxxxxxxxx> wrote: > > > > > 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. > > > > Really cool! > > Thanks! > > > is root-9p possible? I.e. ideally i'd like to have no image at all - just a > > guest kernel and a directory hierarchy for the guest filesystem. > > >From what I can tell, not currently. > > 'kvm_9p' isn't created as a device under /dev, it's just a name used > internally by 9pnet_virtio (and located under sysfs). > > I couldn't figure out which params the kernel would expect to boot using > 9p over virtio (theres no device name to begin with). > > I've also couldn't find anything that suggested it's possible to boot > using virtio-9p as rootfs. This needs guest kernel support, in form of a small amount of 9p specific mounting glue code that the guest kernel will run if either a .config option is set or a boot commandline is specified. Such a thing already exists for another networked filesystem: NFS, so i would suggest looking at the CONFIG_ROOT_NFS=y glue in Linux, i think 9p mounting support would be welcome! Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
