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Error starting pool 'vgNAS0201VM': internal error lvs command failed

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/host.py", line 608, in start_pool
    pool.start()
  File "/usr/share/virt-manager/virtManager/storagepool.py", line 69, in start
    self.pool.create(0)
  File "/usr/lib/python2.7/dist-packages/libvirt.py", line 1108, in create
    if ret == -1: raise libvirtError ('virStoragePoolCreate() failed', pool=self)
libvirtError: internal error lvs command failed