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LVM2. change a clustered LVM volume group to non-clustered

from dhelios.blogspot.com

To activate clustered volume group on non-clustered node.

1) Check, is this volume group is clustered:
# vgdisplay vgtest01 --config 'global {locking_type = 0}' | grep Clustered
  WARNING: Locking disabled. Be careful! This could corrupt your metadata.
  Clustered             yes

2) Now you have two ways.
- If this volume is on cluster node, and clvmd is running
# vgchange -cn vgtest01
   Volume group "vgtest01" successfully changed

- If the cluster cannot achieve quorum, or clvmd is unable to function for whatever reason or you need to temporarily activate the volume group.

# vgchange -cn vgtest01 --config 'global {locking_type = 0}'
  WARNING: Locking disabled. Be careful! This could corrupt your metadata.
  Volume group "vgtest01" successfully changed

# vgchange -ay vgtest01

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