Recovering a Minimal Operating System

To create a minimal operating system recovery tape at /dev/rmt/0mn containing only the operating system elements required to boot the system, perform the following steps:

1.Load a writable tape in the default tape drive for your system.

2.As superuser, enter make_tape_recovery. A tape will be created without further interaction.

System recovery from this tape involves booting from the tape to recover the minimum core operating system. Then you would follow up with data recovery of all user files newer than those restored from the recovery tape.

NOTE: If you are creating a recovery tape for an Itanium®-based system, you can choose to use the -Doption of make_tape_recovery to specify the name of the ANSI tape volume.

Creating a System Recovery Tape of the Entire Root Disk Volume

To create a system recovery tape at the default device, /dev/rmt/0m, that includes the entire root disk in the recovery image, perform the following steps:

1.Load a writable tape in the default tape device for your system.

2.Enter the command:

make_tape_recovery -x inc_entire=vg00

A tape will be created without further interaction.

Creating a System Recovery Tape of the Root Disk Volume with /usr on a Different Volume Group

You can easily create a system recovery tape of the entire root disk, even if the /usr file system resides on a different volume group, by using the -Aoption of make_tape_recovery. This option has make_tape_recovery determine which disks and volume groups the specified files reside on, and then include all files from those disks and volume groups in the recovery image.

1.Load a writable tape in the default tape device for your system.

2.Create a system recovery image with all the disks and volume groups containing the files specified by the default essentials file list /opt/ignite/recovery/mnr_essentials, or a user-defined version that replaces it, /var/opt/ignite/recovery/mnr_essentials, by entering:

make_tape_recovery -A -s myserver -a /dev/rmt/0m

A tape is created on the default device, /dev/rmt/0m, without further interaction. You can boot this tape on your new system.

TIP: The use of the -poption can be particularly helpful, as it allows you to preview the processing that would take place without actually creating the tape.

Tape Recovery for PA-RISC Systems

To install a system recovery image from a tape on a PA-RISC system, use the following procedure:

1.Load the system recovery tape in the tape drive.

2.Boot the system.

3.Interrupt the boot sequence by pressing Esc.

4.Select the tape drive you want to use, and then boot from it.

5.Allow the installation process to complete.

For more information on creating recovery tapes, see make_tape_recovery(1M).

198 Recovery