On Mar 22, 2013, at 8:14 AM, Paul Mather <p...@gromit.dlib.vt.edu> wrote:
> I'm running FreeBSD 9-STABLE as a guest under RHEL 6.4 KVM virtualisation. I > have networking and storage in the FreeBSD guest using the Virtio drivers > (with the virtual disk set to "Virtio" in the definition on the host). > Everything is working nicely: I have a vtnet network adapter and see vtbd > devices for my virtual disks in FreeBSD. Performance is much better compared > with an emulated IDE device. I've had the same experience. > The odd thing is that I don't see GEOM labels reflected in /dev. For > example, I have GPT labels defined in the guest, but I don't see them show up > under /dev/gpt. Similarly, my UFS labels don't show up under /dev/ufs. I > *do* see a /dev/gptid. That appears to be the only label that shows up. I have not encountered this issue. I use virtio block devices and GPT labels exclusively in multiple FreeBSD 9.1 guests and all mount/function without issue. How are you referring to your filesystems in /etc/fstab? IIRC GEOM makes not-in-use labels disappear when a device is in use (e.g. mounted). If you take a new device, put a labeled GPT partition on it and a labeled UFS partition on that but don't mount anything, what happens? > Is there something special I need to do to get GPT and UFS labels to appear > when using Virtio? It seems to me that Virtio block devices appear to be > somewhat unusual. Unlike regular ATA and SCSI devices, my vtbd devices don't > appear in the boot dmesg (although a vtblk device does), and "camcontrol > devlist" does not list them. It's not clear to me how I am supposed to > interact with them other than via basic device I/O through /dev/vtbdX. I > thought that the virtio_scsi module might make them appear as "da" devices > and able to interacted with via camcontrol, but this doesn't seem to be the > case. Virtio block devices and virtio SCSI devices are not the same. If you want to use the virtio_scsi module in FreeBSD you should expose a virtio SCSI device from the host. JN _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
