[libvirt-users] error creating multipath storage pool

[Maxim Titov]

Hi
I'm using Gentoo Linux, libvirt-1.0.0, qemu-1.1.2-r3, multipath-tools
0.4.8-r1. After defining a new storage pool with pool-edit <poolname>:
      <pool type="mpath">
        <name>mpath</name>
        <target>
          <path>/dev/mapper</path>
        </target>
      </pool>
I get this:
internal error missing backend for pool type 7

USE flags for libvirt package are: caps elibc_glibc iscsi libvirtd lvm
lxc macvtap nfs nls python qemu udev vepa -audit -avahi -debug
-firewalld -numa -openvz -parted -pcap -phyp -policykit -rbd -sasl
-selinux -uml -virt-network -virtualbox -xen)
What is wrong and what is the right way to map SAN LUN's to guest using
multipath?