Anthony Liguori wrote: > On 03/06/2010 04:42 PM, Marc Haber wrote: > >Hi, > > > >I am looking to get in touch with somebody who knows more about the > >connection between host configuration, qemu, kvm, and the virtio block > >device driver guest side than I know. > > > >My goal is to have a possibility to give a "speaking" name to any > >block device handed into a guest instance by the host. That name > >should be visible inside the guest, just as a LV is visible with its > >name in the system running the LVM. > > > >For example I would like to say on the qemu or kvm command line > >'-drive file=some-file,label=some-label,if=virtio', and have the > >string "some-label" show up somewhere in /sys/block in the guest, much > >as /sys/block/sda/device/model shows the hardware vendor and type for > >a standard SATA disk. The guest could then handle the information > >passed into it by the host with udev rules, allowing fstab constructs > >like "mount /dev/virtio/block/by-label/some-label as /usr" > > > > You probably would just want to plumb ,serial=X into the virtio-blk > config space and have the driver use it. Then you can do > /dev/block/by-id/XXXXX
Sounds good to me. This is looking a bit similar to the user-specified names in virtio-serial. Is it worth looking for a generic, common mechanism to pass user-specified names to all virtio device types? -- Jamie