5 lvcreate
-m 1 -l 1 -n mirror
$vg
6 lvchange
-a n
$vg/mirror
9 not vgreduce
--removemissing $vg
10 not lvchange
-v -a y
$vg/mirror
11 lvchange
-v --partial -a y
$vg/mirror
13 # also check that vgchange works
14 vgchange
-a n
--partial $vg
15 vgchange
-a y
--partial $vg