MIRROR internal drives in HPUX 11.23 ( Itanium )

[f. halili]

We have a new rx2620 (HP-UX 11.23). How do you mirror the internal drives? Also it came OS pre-intalled. Doing an ioscan -funC disk showed ctds. What are these s1, s2, s3's ??

The physical drives on the machines are two 73GB disks.

A vgdisplay -v on vg00 showed it is using c2t1d0s2. The total PE on c2t1d0s2 is only 4318. 4318x8 is not 73GB.

Thanks,
f. halili

[Deoncia Grayson_1 · Accepted solution]

this link should be of help:

http://docs.hp.com/en/B2355-90950/ch06s02.html#cchgjafa

[James R. Ferguson]

Hi:

Appendix-A of this document describes the procedure that you need to follow:

http://docs.hp.com/en/5991-1236/When_Good_Disks_Go_Bad.pdf

Regards!

...JRF...

[Mridul Shrivastava]

Hi,

Itanium system have three partitions on a disk
cxtxdxs1 is called EFI partition which contains all EFI utilities and EFI shell etc..
cxtxdxs2 is the hpux partition.
cxtxdxs3 is the service partition where some ODE can be copied....

Please find below the example of mirroring the LVM disk on itanium system running 11.23:


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 </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*

[f. halili]

thanks !