[libvirt-users] Problems with a logical pool creation

Hi all, I am new in virtualization so forgive me any evidence. After pool definition, when I try to create a logical pool I obtain the following error: # virsh pool-define vms.pool.xml

Pool vms.pool defined from vms.pool.xml

# virsh pool-start vms.pool error: Failed to start pool vms.pool error: internal error '/sbin/vgchange -ay vms.pool' exited with non-zero status 5 and signal 0: Volume group "vms.pool" not found

Is anything wrong with my xml file? <pool type="logical">

<name>vms.pool</name>

<source>

<device path="/dev/sda2"/> </source> <target> <path>/var/lib/virt/images</path> </target> </pool>

Are pools created in this way permanent? Thank you! Jenaro Percal