If you have LVM installed in a cluster environment, you may at times need to activate logical volumes exclusively on one node. For example, the
pvmove command is not cluster-aware and needs exclusive access to a volume. LVM snapshots require exclusive access to a volume as well.
To activate logical volumes exclusively on one node, use the
lvchange -aey command. Alternatively, you can use
lvchange -aly command to activate logical volumes only on the local node but not exclusively. You can later activate them on additional nodes concurrently.