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

APPLIES TO:

Operating Systems:

• RHEL5
• RHEL6
• RHEL7

SYMPTOMS

Need to activate cluster volume group

SOLUTION

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

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




Before activating clustered volume group in non cluster environment, ensure that this volume group not in use in other cluster members.