HP-UX 11i Release Notes (December 2000)

HP-UX 11i Operating Environments
HP-UX 11i Enterprise Operating Environment (new)
Chapter 490
Beginning with HP-UX 11i, LVM mirroring automatically enables SLVM
for a two-node environment supporting both non-SLVM and SLVM
environments. All LVM systems can mirror their data on disk, and the
mirrored copy of the data is also accessible from a two-node cluster.
Impact
There are no changes to the LVM command interface to enable LVM
mirroring in the SLVM environment. Therefore, you still use the
lvcreate and the lvextend commands to create mirrored logical
volumes. The only software code changes were made to the HP-UX
kernel and do not affect any LVM manpages, or the MirrorDisk/UX
Version B.11.11 products which are:
B5403BA MirrorDisk/UX License for Workstations
B2491BA MirrorDisk/UX License for Servers
To make use of the LVM mirroring capability, you may want to add extra
disks to the volume group and mirror the data on the additional disks.
Compatibility Issues
There is no need to make any changes to scripts or makefiles to make use
of the LVM mirroring capability in the SLVM environment.
NOTE SLVM mirroring is NOT supported for striped logical volumes and is
ONLY supported in a two-node environment. SLVM mirroring does not
support spared disks in a shared volume group. You should disable
sparing by using the pvchange -z n <path> command on shared
volume disks.
Process Resource Manager (PRM)
Process Resource Manager (PRM) Version C.01.08.02 enables system
administrators to guarantee CPU, real memory, and disk bandwidth
resources to users and applications on the system.
This version of PRM provides distribution of resources through shares,
hierarchical PRM groups, in-kernel memory management, a Simple
Network Management Protocol (SNMP) agent, remote management of
PRM and an improved GUI.