Xen DomU zvol disk sizes

[Sebastian <sebastian%xenoserver.net@localhost>]

Hello,

I'm trying to setup a NetBSD 10.1 Dom0 and use ZFS zvols as virtual 
block devices. First I struggled creating a working configuration 
because the raw and block device files are in different subdirectories, 
but at the end I found the few notes in the NetBSD wiki.

If I now create a zvol with 10G size and start a NetBSD 10.1 (PV mode) 
the zvol appears in the DomU, but the disk size inside the DomU is only 
25% (2^2??). I tried with different zvol blockvolsizes but without any 
effect.

Also DomUs in HVM mode report the wrong disk sizes.

Anybody with a idea how to fix this?

Best regards,
Sebastian