Extending a volume group that uses LVM split-site mirroring

When mirror pools are used for LVM split-site mirroring, you need to have the same amount of disk space in each mirror pool. Otherwise, the expansion or creation of file systems and logical volumes is blocked before all the disk space is used.

If all disks that are being used in a cluster are the same size, the same number of disks can be added to each mirror pool.

If the disks in a volume group with LVM split-site mirroring are not the same size, you must ensure that an equal amount of space is added to each mirror pool. To determine the size of a disk, run the bootinfo -s command.