> The device driver you're using doesn't support the BLKBSZSET ioctl.
> It should also be returning ENOTTY (rather than EINVAL) according
> to a recent discussion on linux-kernel for ioctl commands which it
> doesn't recognise.
I might be talking rubish, but this is plain scsi disk. What specific
device is lacking this support?
Should I report this to the vger lkml? What should I say?
> > mkfs.xfs: can't determine device size
> I assume you're using mkfs from xfsprogs-2.0.0 -- in which case,
> your device driver also doesn't support the BLKGETSIZE64 ioctl.
> This second one is fatal because mkfs needs to know how big your
> device is. You should be able to make some more progress using
> a filesystem in a regular file
Should a raid or LVM object do it?
 I'm still a begginer at trying to know the kernel insternals, and I
still haven't read the ioctrl section ;), so...