SLVM Single-Node Online Reconfiguration (SLVM SNOR)

Commands
vgchange(1M)
A new option (-x) was added to the vgchange command to change the activation mode
of a shared volume group.
Changing the mode to exclusive from shared
vgchange -a e -x vg_name
The vgchange command provides a new "-x" option that must be used together with the
existing "-a e" option to change the activation mode of a shared VG to exclusive mode.
Upon success, the VG will be in the same state than if it had been activated in exclusive
mode from inactive.
The operation will fail if the volume group is activated on any other node than the local
node or if current operations on the volume group do not allow an activation change, e.g.
loss of runtime quorum (more than 50% of the last active set of physical volumes lost).
Changing the mode to shared from exclusive
vgchange -a s -x vg_name
The vgchange command provides a new "-x" option that must be used together with the
existing "-a s" option to change the activation mode of an active VG from exclusive to
shared mode. Upon success, the VG will be in the same state than if it had been
activated in shared mode from inactive.
The operation will fail if the volume group is currently inactive or activated in shared
mode on the local node, or if current operations on the volume group do not allow an
activation change, e.g. loss of runtime quorum.