Technical knowledge base document

Submitted Date: 3/31/04 Title: How to mirror vg00 using LVM on IA with 11.23 Document ID: KBRC00014526 Last Modified Date: 1/17/06

You may provide feedback on this document

PROBLEM

RESOLUTION

NOTE: There are differences in procedure between 11.22 and 11.23.
Please refer to KBRC00011156 for B.11.22.

1. From HPUX, use vgdisplay to identify the disk that is in vg00. Use
   ioscan to find the spare disk.

   # vgdisplay -v --> vg00 is on /dev/dsk/c2t1d0s2 in this example
   # ioscan -efunC disk --> Let's assume c3t2d0 for this example

2. Create the system, OS, and service partitions.

   # cat <<EOF>/tmp/partitionfile
   > 3
   > EFI 500MB
   > HPUX 100%
   > HPSP 400MB
   > EOF
   # idisk -wf /tmp/partitionfile /dev/rdsk/c3t2d0
idisk version: 1.31
********************** WARNING ***********************
If you continue you may destroy all data on this disk.
Do you wish to continue(yes/no)? yes  <-- Answer "yes" and not "y"

3. Create device files needed for the new partitions.

   # insf -eC disk

4. Verify the partition table.

   # idisk /dev/rdsk/c3t2d0

5. Verify that the device files were created properly.

   # ioscan -efnC disk --> c3t2d0 is 0/1/1/1.2.0

6. Initialize the efi partition for use.

   # efi_fsinit -d /dev/rdsk/c3t2d0s1

7. Populate the /efi/hpux/ directory in the new EFI system partition.

   # mkboot -e -l /dev/rdsk/c3t2d0

8. Change the auto file for the mirror to boot without quorum.
   NOTE: Using "s1"

   # echo "boot vmunix -lq" > /tmp/AUTO.lq
   # efi_cp -d /dev/rdsk/c3t2d0s1 /tmp/AUTO.lq /EFI/HPUX/AUTO

   NOTE: We assume that if we boot from the primary, the mirror is fully
   functional and therefore we don't need to override quorum. Your site
   might require that both disks override quorum.

9. Verify the contents of the auto file on the primary and the mirror.
   NOTE: Using "s1"

   # efi_cp -d /dev/rdsk/c2t1d0s1 -u /EFI/HPUX/AUTO /tmp/AUTO.pri
   # efi_cp -d /dev/rdsk/c3t2d0s1 -u /EFI/HPUX/AUTO /tmp/AUTO.alt
   # cat /tmp/AUTO.pri
   # cat /tmp/AUTO.alt

10. Add the new partition to vg00.
    NOTE: Using "s2"

   # pvcreate -fB /dev/rdsk/c3t2d0s2
   # vgextend vg00 /dev/dsk/c3t2d0s2

11. Mirror all logical volumes in vg00.
    NOTE: Using "s2"

   # lvextend -m 1 /dev/vg00/lvol1 /dev/dsk/c3t2d0s2
   # lvextend -m 1 /dev/vg00/lvol2 /dev/dsk/c3t2d0s2
   # lvextend -m 1 /dev/vg00/lvol3 /dev/dsk/c3t2d0s2
   .
   .
   .
   # lvextend -m 1 /dev/vg00/lvol8 /dev/dsk/c3t2d0s2

12. Add the new disk to /stand/bootconf.
    NOTE: Using "s2"

    # echo "l /dev/dsk/c3t2d0s2" >> /stand/bootconf

13. Verify that the new disk was added to vg00, and the lv's are in sync.

    # vgdisplay -v vg00

14. Verify that the BDRA was updated properly. Take note of the HW paths for
    step 15.

    # lvlnboot -v

15. Add EFI primary and high availability boot path menu entries.

    # setboot -p 0/1/1/0.1.0 <-- Set primary disk
    # setboot -h 0/1/1/1.2.0 <-- Set mirror disk
    # setboot -b on <-- Set autoboot on

16. Verify that the primary and mirror boot paths are configured properly.

    # setboot

17. Test the new mirror by booting off of it.

    # shutdown -r -y 0

18. Select "HP-UX HA Alternate Boot" to test the mirror.

    EFI Boot Manager ver 1.10 [14.61]  Firmware ver 2.21 [4334]
    Please select a boot option
         HP-UX Primary Boot: 0/1/1/0.1.0
         HP-UX HA Alternate Boot: 0/1/1/1.2.0
         EFI Shell [Built-in]

20. Verify which disk/kernel you booted from.

    # grep "Boot device" /var/adm/syslog/syslog.log
       vmunix: Boot device's HP-UX HW path is: 0.1.1.1.2.0

21. Remove temporary files.

    # rm /tmp/partitionfile /tmp/AUTO*

Done.

    Note: For a procedure on how to create an alternate boot disk
    without LVM mirroring see:
    IA64KBRC00016649 Creating an alternate boot disk on Itanium systems

ALT KEYWORDS