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Appendix D: Procedures

This section contains details on some of the procedures described in earlier sections of this document.

Mirroring the Root Volume on PA-RISC Servers

To set up a mirrored root configuration, you must add a disk to the root volume group, mirror all the

root logical volumes onto it, and make it bootable. For this example, the disk is at path 2/0/7.15.0

and has device special files named /dev/rdsk/c2t15d0 and /dev/dsk/c2t15d0.

1. Use the insf command with the -e option to make sure the device files are in place. For

example:

# insf -e -H 2/0/7.15.0

You now have the following legacy device files for this disk:

/dev/dsk/c2t15d0

The entire disk (block access)

/dev/rdsk/c2t15d0

The entire disk (character access)

Starting with HP-UX 11i v3, you must have the persistent device special files as well. To achieve

this, use the insf command with the –e option or -eC disk option. If you are running insf

–e –H <hw_path>, you must run the insf command for both the legacy and new style lun

hardware path.

# insf -e -H 0/5/1/0.5.14.0.0.0.1

You now have the following persistent device files for this disk:

/dev/disk/disk96

The entire disk (block access)

/dev/rdisk/disk96

The entire disk (character access)

2. Enter the pvcreate command with the -B option to create a physical volume:

# pvcreate -B /dev/rdsk/c2t15d0

3. Enter vgextend to add the physical volume to your existing root volume group:

# vgextend /dev/vg00 /dev/dsk/c2t15d0

4. Enter the mkboot command to set up the boot area:

# mkboot –l /dev/rdsk/c2t15d0

To check, use the lifls command to list the contents of LIF directory on standard output:

# lifls –l /dev/rdsk/c2t15d0

5. Enter the mkboot command to add an autoboot file to the disk boot area. If you expect to boot

from this disk only when you lose quorum, you can use the alternate string “hpux –lq” to disable

quorum checking (This not recommended; use this with caution to prevent data loss):

# mkboot –a “hpux” /dev/rdsk/c2t15d0

Note: By default, LVM enforces the presence of less than 50% of a volume group’s physical

volumes being available at volume group activation time. For example, if the root volume group

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Seagate ST34572WC Especificaciones Pagina 48