Dynamic Root Disk A.3.12.* Administrator's Guide

ManualsBrandsHP ManualsSoftwareHP-UX Dynamic Root Disk

Contents

1 About Dynamic Root Disk............................................................................5

Conceptual overview.................................................................................................................5

Terminology.............................................................................................................................5

Commands overview.................................................................................................................5

Downloading and installing Dynamic Root Disk ...........................................................................7

2 Cloning the active system image...................................................................8

The active system image............................................................................................................8

Locating disks..........................................................................................................................8

Locating disks on HP-UX 11i v2 systems...................................................................................8

Locating disks on HP-UX 11i v3 Integrity systems.......................................................................9

Choosing a target disk............................................................................................................10

Using other utilities to determine disk availability........................................................................11

Using DRD for limited disk availability checks.............................................................................11

Using drd clone to analyze disk size.........................................................................................12

Creating the clone..................................................................................................................12

Adding or removing a disk......................................................................................................15

3 Updating and maintaining software on the clone..........................................16

DRD-Safe commands and Packages..........................................................................................16

Updating and managing patches with drd runcmd......................................................................17

DRD-Safe patches and the drd_unsafe_patch_list file...............................................................17

Patches with special installation instructions...........................................................................18

Updating and managing products with drd runcmd ...................................................................18

Special considerations for firmware patches...............................................................................18

Restrictions on update-ux and sw* commands invoked by drd runcmd...........................................18

Viewing logs..........................................................................................................................19

4 Accessing the inactive system image...........................................................20

Mounting the inactive system image..........................................................................................20

Performing administrative tasks on the inactive system image........................................................21

Unmounting the inactive system image......................................................................................23

5 Synchronizing the inactive clone image with the booted system......................25

Overview..............................................................................................................................25

Quick start—basic synchronization............................................................................................25

The drd sync command...........................................................................................................26

Determining the list of files in the booted volume group...........................................................26

Trimming the list of files to be synchronized...........................................................................26

Copying the files to the inactive clone image.........................................................................28

Using the drd sync preview to determine divergence of the clone from the booted system.................28

drd sync system shutdown script................................................................................................28

6 Activating the inactive system image...........................................................30

Preparing the inactive system image to activate later...................................................................31

Undoing activation of the inactive system image.........................................................................32

7 Rehosting and unrehosting systems..............................................................35

Rehosting overview.................................................................................................................35

Rehosting examples................................................................................................................35

Rehosting a mirrored image.....................................................................................................36

Unrehosting overview..............................................................................................................37

Contents 3