HP StorageWorks IBM AIX Kit V3.0B for Enterprise Virtual Array Installation and Configuration Guide (AA-RUHAB-TE, October 2003)

Additional Host Considerations
44 IBM AIX Kit V3.0B for Enterprise Virtual Array Installation and Configuration Guide
Note: All the commands that follow apply to node miranda.
importvg -V 45 -y sharedvg hdisk4
15. Change the volume group so that it does not set autovaryon at boot time:
chvg -a n sharedvg
16. Deactivate the volume group:
varyoffvg sharedvg
The virtual disk is now ready to be added to your HACMP configuration.
Using hsv_snapshot.rte
One of the features of the Enterprise Virtual Array is the ability to create
snapshots or snapclones of virtual disks. Snapshots and snapclones are copies of a
virtual disk. These copies are ideal for a snapshot-in-time backup or making
changes to data without actually affecting the original data. The problem that
snapshots and snapclones present to IBM AIX is duplicate physical volume
identifiers. Since snapshots and snapclones are copies of virtual disks, they
contain all the data of the original, including any volume group information. Since
a virtual disk and its snapshots and snapclones contain the same data, they appear
as the same disk to the logical volume manager. The IBM AIX kit includes a
utility that will recreate the data on a disk so that it appears as a different disk than
the original virtual disk.
Note: To use the snapshot utility, you will need the file /usr/sbin/recreatevg. If
your system does not contain this file, you may need to get a newer version of the
bos.rte.lvm fileset (4.3.3.75 or later).
You can find the snapshot utility through SMIT in Applications
>Enterprise Virtual Array Snapshots >Recreate Volume Group of a
Snapshot.
There are two menu items (each are described in the sections that follow):
■ Show Disks with the Same Physical Volume ID
■ Recreate Volume Group