HP-UX 11i Version 1.6 Release Notes

File and Disk Management

Logical Volume Manager (LVM)

Chapter 4

Logical Volume Manager (LVM)

The Logical Volume Manager is our HP-UX proprietary volume manager, which is

tightly integrated into the core HP-UX commands and kernel. LVM has been available

on all PA-RISC releases of HP-UX since Release 9.0 and is available for non-boot (data)

disks on IPF on HP-UX 11i v1.5. In HP-UX 11i v1.6, LVM on IPF supports all the same

features available on PA-RISC.

Summary of Change

The only two Logical Volume Manager (LVM) components that are not already

supported on IPF systems are the LVM boot and Shared Logical Volume Manager

(SLVM) features. As of HP-UX 11i v1.6, the Logical Volume Manager (LVM) is the

designated default volume manager. As such, LVM provides a feature set on IPF

platforms in HP-UX 11i v1.6 that is equivalent to the set provided for the Logical

Volume Manager (LVM) feature on PA-RISC systems in HP-UX 11i v1.0.

Details of Change

HP-UX 11i v1.6 provides:

• Full LVM (Logical Volume Manager) support on IPF that is equivalent to today’s

PA-RISC LVM offering on HP-UX 11i v1.0.

• LVM & VxVM support on both IPF & PA-RISC with user selectable volume manager

(LVM & VxVM) defaulted to LVM at installation time.

• Full LVM boot-disk support (root/swap/dump).

• Boot loader support for LVM boot disk.

• Ignite/UX install support for LVM.

• Verified Shared LVM (SLVM) capability.

Impact

HP-UX 11i v1.5 supports LVM on IPF only and without LVM boot-disk support.

HP-UX 11i v1.6 provides full LVM boot-disk support on PA-RISC & IPF with user

selectable volume manager (VxVM or LVM) defaulted to LVM at installation time.

Compatibility

There is no stated or implied compatibility between PA-RISC LVM boot disks and IPF

LVM boot disks. Boot disks are not interchangeable across platforms. Non-boot LVM

commands and non-boot (data) disks are expected to be fully compatible between HP-UX

11i v1.5 and HP-UX v1.6 IPF systems.

Performance

Not applicable.