Можно (на тестах проверялось), но не поддерживаемо (т.е. на продакшене нельзя 🙂 ).
Will examine all the disks in the volume group to see if they have grown in size. If any disks have grown in size attempt to add additional PPs to PV. If necessary
will determine proper 1016 multiplier and conversion to big vg. Notes:
1 The user might be required to execute varyoffvg and then varyonvg on the volume group for LVM to see the size change on the disks.
2 There is no support for re-sizing while the volume group is activated in classic or enhanced concurrent mode.
3 There is no support for re-sizing for the rootvg.