Managing Systems and Workgroups: A Guide for HP-UX System Administrators

Administering a System: Managing Disks and Files

Managing Disks

Chapter 6 571

Managing Logical Volumes Using SAM

SAM enables you to perform most, but not all, LVM management tasks.

Tasks that can be performed with SAM include:

• Creating or removing volume groups

• Adding or removing disks within volume groups

• Creating, removing, or modifying logical volumes

• Increasing the size of logical volumes

• Activating and deactivating volume groups

• Creating or increasing the size of a ﬁle system in a logical volume

(see “Managing File Systems” on page 602)

• Setting up and modifying swap and dump logical volumes (see

“Managing Swap and Dump” on page 662)

• Creating and modifying mirrored logical volumes (see “Managing

Mirrored File Systems” on page 627)

These tasks can also be performed with HP-UX commands. (See the

section below as well as the speciﬁc sections referred to above.)

To use SAM, enter sam.

For help using SAM, consult SAM’s online help.

Managing Logical Volumes Using HP-UX Commands

As stated above, all disk management tasks performed by SAM can also

be done using HP-UX commands.

The following tables give you general information on the commands you

will need to use to perform a given task. Refer to the HP-UX Reference

for detailed information.

Table 6-2 Commands Needed for Physical Volume Management Tasks

Task

Commands

Needed

Changing the characteristics of a physical

volume in a volume group.

pvchange

(1M)