Clustered Volumes? That’s Logical

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With lvm you can create clustered volumes allowing different nodes to mount different lvs on the same vg.

The standard workflow of creating partitions and vgs is:

parted /dev/mapper/datadisk mklabel gpt mkpart 1p "1 -1";
partprobe /dev/mapper/datadisk
pvcreate /dev/mapper/datadiskp1
vgcreate vg_xml /dev/mapper/datadiskp1
vgchange -c y vg_xml

If you get this error creating the LV

# lvcreate -n lv_xml vg_xml -l +100%FREE 
  Error locking on node bar-coll-mta-02: Volume group for uuid not found: gFyARW80mUikvaZafzYz773pLBWqc8etOgVrimSit4OmC98c1cIT0qfZfY3tZRxQ
  Failed to activate new LV.

That’s because one of the cluster nodes can’t see the newly created volume.
Probably the following will solve

#partprobe /dev/mapper/datadisk
#vgscan

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