# this is the lvm partition, if it exists on that device
lvm_partition= InstallPartitionDisks.get_partition_path_from_device( device, vars, log )
cmd = "pvdisplay %s | grep -q 'planetlab'" % lvm_partition
# this is the lvm partition, if it exists on that device
lvm_partition= InstallPartitionDisks.get_partition_path_from_device( device, vars, log )
cmd = "pvdisplay %s | grep -q 'planetlab'" % lvm_partition