LVM Volume Group Quiesce/Resume

vgchgid
The vgchgid command changes the volume group identifier on the disks indicated:
vgchgid PhysicalVolumePath [PhysicalVolumePath]...
After performing a snapshot of the disks in a volume group, the vgchgid command is
used to differentiate the snapshots of the physical volumes from the originals. LVM
can then recognize both volume groups (the one with the original physical volumes and
the one with the physical volume snapshots) and both volume groups may be activated
on the system.
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