[uphill@zürich ]# lvscan
inactive '/dev/vol0/data' [350.00 GB] normal
inactive '/dev/vol0/disk' [500.00 GB] normal
[root@zürich ]# vgchange -a y
2 logical volume(s) in volume group "vol0" now active
[uphill@zürich ]# lvscan
ACTIVE '/dev/vol0/data' [350.00 GB] normal
ACTIVE '/dev/vol0/disk' [500.00 GB] normal