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. > Please check out this patch and follow the "mount_tag" ...it may be helpful in explaining what you are looking for.
http://www.mail-archive.com/qemu-devel@nongnu.org/msg26358.html Thanks, JV > 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" > > Since I don't have pretty much clue about kernel programming, I guess > that one would need to have qemu/kvm support for the additional label > to be passed to the emulated/virtualized guest, and a modification to > the guest kernel virtio driver which needs to accept the information > passed by the host and to generate the appropriate entry in /sys. > > Am I correct in my assumption? Can you say who I need to talk to to > get advice about how to implement this (or to have it implemented, if > it's easy enough)? > > Any hints will be appreciated. > > Greetings > Marc >
