topic Internal Disk Mirroring problem in Operating System - HP-UX

Internal Disk Mirroring problem

Walker_3 — Mon, 25 Aug 2014 03:03:56 GMT

Hi all,
I have rp3440 PA-RISC with 2 internal disk. I am facing problem to copy boot loader to second disk during Mirroring internal disk. I used the following commands. All volumes are mirrored. Now what can I do?

pvcreate -B newdisk
vgextend /dev/vg00
mkboot -l /dev/rdsk/newdisk
mkboot -a "hpux -lq" /dev/rdsk/newdisk
mkboot -b /usr/sbin/diag/lif/updatediaglif -p ISL -p HPUX -p AUTO -p LABEL -p PAD /dev/rdsk/newdisk

then mirrored lvol1 2 3 4 5 6 7
Modified setboot
But failed to reboot from alternat disk. Can any1 help me?

P.S. This thread has been moved from HP-UX Technical Documentation to LVM and VxVM. -HP Forum Moderator

Re: Internal Disk Mirroring problem

RAC_1 — Mon, 10 Oct 2005 23:58:55 GMT

lifls -l /dev/rdsk/cxtxdx on primary and secondary disk. Check if all utilities are there or not.

Also are you sure, you mirrored the lvols in the correct order?? They should be mirrored ins ame order as they appear on primary disk.

Re: Internal Disk Mirroring problem

Walker_3 — Tue, 11 Oct 2005 00:06:33 GMT

Hi RAC,
Yes, I have followed the correct order. Do I have to re-establish mirror to troubleshoot this boot loader?

Re: Internal Disk Mirroring problem

RAC_1 — Tue, 11 Oct 2005 00:14:36 GMT

Repeat the procedure. You have used updatediaglif to put the boot utilities. Which system is this 64 bit or 32 bit?? If 64 bit, then you should be using updatediaglif2 and not updatediaglif.

Re: Internal Disk Mirroring problem

Adisuria Wangsadinata_1 — Tue, 11 Oct 2005 00:25:57 GMT

Hi,

Check the document (docID : LVMKBRC00005103) below about 'How to create a Mirrored Boot Disk on PA-RISC Systems - Cookbook' :

http://www2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000080811535

To check your system 32/64 bit :

# getconf HW_CPU_SUPP_BITS

Always work when I use this document to mirror the boot disk.

Cheers,
AW

Re: Internal Disk Mirroring problem

Artyom Voronchihin — Tue, 11 Oct 2005 01:09:35 GMT

Hello!

You forgot to execute "lvlnboot -R" just after mkboot to update links in BDRA on newdisk.

Re: Internal Disk Mirroring problem

Walker_3 — Tue, 11 Oct 2005 01:12:58 GMT

Hi,

Can I apply command now without breaking the mirrors? If I have to break the mirrors, what is the procedure to do it?

Re: Internal Disk Mirroring problem

RAC_1 — Tue, 11 Oct 2005 01:23:45 GMT

lvreduce -m 0 /dev/vgxx/lvolx

Repeat for all lvols.

vgreduce /dev/vg00 /dev/dsk/cxtxdx

Repeat the procedure.

Re: Internal Disk Mirroring problem

Walker_3 — Tue, 11 Oct 2005 22:24:39 GMT

Hi RAC,
After all steping done orderly when reboot the system I interrupted the normal boot and gave command (bo alt), it tried to boot from alternate disk but since there is no execution file is there so it goes to the ISL prompt. In ISL prompt I have given sevral commands for booting from alternate disk but it says format error, can not execute, etc. Please help.

Re: Internal Disk Mirroring problem

Sameer_Nirmal — Tue, 11 Oct 2005 23:16:27 GMT

I suspect the problem with LIF headers and LIF files. Hence you are getting that error.

Now you can cross check LIF headers and files on the new -disk using
#lifls -l /dev/rdsk/new-disk
#licp /dev/rdsk/new-disk:AUTO -

Did you refer the doc mentioned by Adisuria and followed the steps there in?
Did you do followings and cross-check the mirror before trying to boot from the mirror?

# lvlnboot -r /dev/vg00/lvol3 /dev/vg00
# lvlnboot -b /dev/vg00/lvol1 /dev/vg00
# lvlnboot -s /dev/vg00/lvol2 /dev/vg00
# lvlnboot -d /dev/vg00/lvol2 /dev/vg00
# lvlnboot -v

Did you add the entry in /stand/bootconf for the new mirror device ?

If you see problems pertaining to above, just reduce all mirrors and start over.
If you follow all the steps correctly , the mirror should work.

Re: Internal Disk Mirroring problem

Artyom Voronchihin — Tue, 11 Oct 2005 23:56:58 GMT

Hello!
Here is the script for mirroring boot volumes.

#!/sbin/sh
###########################################################
# Mirroring of bootable system disk with traditional vg00-layout
# Developed by Vladimir Loborev, Hewlett-Packard, Russia.
# Usage:
# mirrvg00.sh
# Example: mirrvg00.sh c0t6d0 c4t13d0
##########################################################
BOOT=$1
MIRR=$2
echo "VG00 on disk ${BOOT} is being mirroring to disk ${MIRR}..."
pvcreate -B -f /dev/rdsk/$MIRR
vgextend vg00 /dev/dsk/$MIRR
mkboot /dev/rdsk/$MIRR
mkboot -a "hpux -lq (;0)/stand/vmunix" /dev/rdsk/$MIRR
mkboot -a "hpux -lq (;0)/stand/vmunix" /dev/rdsk/$BOOT
for i in 1 3 2
do
lvextend -m 1 /dev/vg00/lvol$i /dev/dsk/$MIRR
done
lvlnboot -b /dev/vg00/lvol1
lvlnboot -r /dev/vg00/lvol3
lvlnboot -s /dev/vg00/lvol2
lvlnboot -R /dev/vg00
lvlnboot -v
for i in 4 5 6 7 8 9
do
lvextend -m 1 /dev/vg00/lvol$i /dev/dsk/$MIRR
done
PRI=`lssf /dev/dsk/$BOOT | awk '{ print $15 }'`
ALT=`lssf /dev/dsk/$MIRR | awk '{ print $15 }'`
setboot -p $PRI
setboot -a $ALT
echo "Mirroring of boot disk is finished"
echo "Check results by lvdisplay command"

Re: Internal Disk Mirroring problem

Walker_3 — Sat, 15 Oct 2005 00:07:27 GMT

Its ok.