Mirror UX

[navin]

Can some one give me the short procedure to do the root vg mirror .I have mirror_UX software installed on my 11.23.
3 disks included in a system.the first disk was included in root vg00. Planning on mirroring root vg00 to third disk.
It is been a long time for me worked on mirror ux stuff.
Appreciate your help in this.
Thanks

[Ivan Ferreira · Accepted solution]

This is a short procedure, but you should take your time and see the manuals and guides before doing this:

Mirroring root, boot and primary swap
=====================================

pvcreate -B /dev/dsk/c0t3d0
vgextend /dev/vg00 /dev/dsk/c0t3d0
mkboot /dev/dsk/c0t3d0
mkboot -a "hpux (;0)/stand/vmunix" /dev/rdsk/c0t3d0
lvextend -m 1 /dev/vg00/boot /dev/dsk/c0t3d0
lvextend -m 1 /dev/vg00/root /dev/dsk/c0t3d0
lvextend -m 1 /dev/vg00/prswaplv /dev/dsk/c0t3d0
Reactivate disks with vgchange -a y

[James R. Ferguson]

Hi Navin:

A recent (and best) guidelines I've seen are in the document below. You don't say if your server is an Itanium one. The procedure differs slightly for IA versus PA-RISC so see pages 24-28:

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

Regards!

...JRF...

[Raj D.]

Hi Navin ,

Check this doc and its covering the root disk mirror on 11.23 ,

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


Cheers,
Raj.

[James George_1]

Hi Naveen

Identify your disk with ioscan.

# ioscan -fnC disk

then do the following

# pvcreate -fB /dev/rdsk/cxtxd0
# mkboot -l /dev/rdsk/cxtxd0
# mkboot -a "hpux -lq ;0)/stand/vmunix" /dev/rdsk/cxtxd0
lifcp /dev/rdsk/cxtxd0:AUTO -
# vgextend /dev/vg00 /dev/dsk/cxtxd0

# bdf
You can mirror your vg00 LVs with this simple loop script.. or do lvextend -m 1 on each LV to the disk.

for i in 1 2 3 4 5 6 7 8 ;do
lvextend -m 1 /dev/vg00/lvol$i /dev/dsk/cxtxd0
done

[Doug Burton]

to mirror:

for x in lvol1 lvol2 lvol3 lvol4 lvol5 lvol6 lvol7 lvol8
do
echo "\n******** Doing ${x} ********\n"
lvextend -m 1 /dev/vg00/${x} /dev/dsk/c1t2d0
done ; banner All Done

[Geoff Wild]

And mine:

Say /dev/dsk/c0t6d0 is the root disk and /dev/dsk/c3t6d0 is the disk you want to make a mirror of.

1. Create a bootable LVM disk to be used for the mirror.
pvcreate -B /dev/rdsk/c3t6d0
2. Add this disk to the current root volume group.
vgextend /dev/vg00 /dev/dsk/c3t6d0
3. Make the new disk a boot disk.
mkboot -l /dev/rdsk/c3t6d0
4. Copy the correct AUTO file into the new LIF area.
mkboot -a "hpux -lq (;0)/vmunix" /dev/rdsk/c3t6d0
5. Mirror the boot, root and primary swap logical volumes to the new
bootable disk. Ensure that all devices in vg00, such as /usr, /swap,
etc., are mirrored.
The following is an example of mirroring the boot logical volume:
lvextend -m 1 /dev/vg00/lvol1 /dev/dsk/c3t6d0
The following is an example of mirroring the primary swap logical
volume:
lvextend -m 1 /dev/vg00/lvol2 /dev/dsk/c3t6d0
The following is an example of mirroring the root logical volume:
lvextend -m 1 /dev/vg00/lvol3 /dev/dsk/c3t6d0
6. Update the boot information contained in the BDRA for the mirror
copies of boot, primary swap and root.
/usr/sbin/lvlnboot -b /dev/vg00/lvol1
/usr/sbin/lvlnboot -s /dev/vg00/lvol2
/usr/sbin/lvlnboot -r /dev/vg00/lvol3
7. Check if the BDRA is correct.
/usr/sbin/lvlnboot -R /dev/vg00
8. Verify that the mirrors were properly created.
lvlnboot -v /dev/vg00
The output of this command is shown in a display like the following:
Boot Definitions for Volume Group /dev/vg00:
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c0t6d0 (1/0/0/3/0.6.0) -- Boot Disk
/dev/dsk/c3t6d0 (1/0/1/0/0/1/1.6.0) -- Boot Disk
Boot: lvol1 on: /dev/dsk/c0t6d0
/dev/dsk/c3t6d0
Root: lvol3 on: /dev/dsk/c0t6d0
/dev/dsk/c3t6d0
Swap: lvol2 on: /dev/dsk/c0t6d0
/dev/dsk/c3t6d0
Dump: lvol2 on: /dev/dsk/c0t6d0, 0

vgdisplay -v vg00

Then lvextend for all other lvols:

lvextend -m 1 /dev/vg00/lvol4 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol5 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol6 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol7 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol8 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol9 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol10 /dev/dsk/c3t6d0
lvextend -m 1 /dev/vg00/lvol11 /dev/dsk/c3t6d0

Rgds...Geoff

[Victor Fridyev]

Hi,

You can use the attached script

HTH

[Andrew Rutter]

hi navin,

examples below should be good enough for you to understand, but only if its a pa 11.23 insatll.
If its itanium install then further steps are needed, as the disk will need partitioning first otherwise it will not boot/work should a failure happen.

Andy

Also, please take time to amend this situation and reward people for there efforts in trying to help you.

I have assigned points to 87 of 300 responses

9doesnt look very good in your profile)

[Raj D.]

Navin ,

You must review your threads after posting.
Andrew is correct. Please take out some time to do that.

Enjoy foruming ,
Cheers,
Raj.

[navin]

Hello Everyone ,
Like to thank you for your responses.
SUCCESSFULLY created a mirror disk.
Will be sure to review the thread and will award your replies with out fail.
Thanks

[Raj D.]

Cheers Navin.

( * 0 point please. )

[navin]

doh..
u'r funny.

[navin]

Thanks All ,Closing now.