topic How to mirror vg00? in Operating System - HP-UX

How to mirror vg00?

joe_91 — Fri, 11 Apr 2003 12:48:15 GMT

Team:

We have 2 36 Gig internal disks on nclass and we need to mirror it. I reinstalled 11.0 and configured the vg00. Now i need to mirror all the lvols. How do i do it? There are 13 lvols. Please Help.

Thanks

Joe.

Re: How to mirror vg00?

Pete Randall — Fri, 11 Apr 2003 12:55:06 GMT

Joe,

First, do you have the MirrorDisk-UX software installed. Without that, you're not going anywhere.

The actual steps are outlined here:
http://www.docs.hp.com/cgi-bin/fsearch/framedisplay?top=/hpux/onlinedocs/B2355-90672/B2355-90672_top.html&con=/hpux/onlinedocs/B2355-90672/00/00/68-con.html&toc=/hpux/onlinedocs/B2355-90672/00/00/68-toc.html&searchterms=MirrorDisk-UX&queryid=20030411-075416

Pete

Re: How to mirror vg00?

James R. Ferguson — Fri, 11 Apr 2003 12:57:17 GMT

Hi Joe:

# pvcreate ???B /dev/rdsk/cXtYdZ
# vgextend /dev/vg00 /dev/dsk/cXtYdZ
# mkboot /dev/rdsk/cXtYdZ
# mkboot ???a "hpux ???lq" /dev/rdsk/cXtYdZ
# for LV in 1 2 3 4 5 6 7 8 ...
> do
> lvextend ???m 1 /dev/vg00/lvol${LV} /dev/dsk/cXtYdZ
> done
# lvlnboot ???v

# mkboot ???a "hpux ???lq" /dev/rdsk/cXtYdZ #...for original volume, too...
# setboot ???a [alternate_path] #...for new mirror...
# lifcp /dev/rdsk/xCtYdZ:AUTO - #...copy to stdout for verification...

Regards!

...JRF...

Re: How to mirror vg00?

Uday_S_Ankolekar — Fri, 11 Apr 2003 13:01:52 GMT

Well, This VG00 has all the 13 Lvols??

Any way Here is the process
If the second disk is not yet used in any of the VG then you need to add this to existing vg00, It is good to have a mirrored boot disk

In this example, the disk to be used as an additional mirror copy will be /dev/dsk/c0t5d0, which will include root and the swap logical volumes. The primary mirror copy will be on /dev/dsk/c0t6d0.

# pvcreate -B /dev/rdsk/diskname (c0t7d0)

# vgextend /dev/vg00 /dev/dsk/c0t7d0

# mkboot -l /dev/rdsk/c0t7d0

# mkboot -a "hpux" /dev/rdsk/c0t7d0

Or, use the -lq option to allow the system to boot in the event that one of the disks is unavailable, resulting in a loss of quorum.

# mkboot -a "hpux -lq" /dev/rdsk/c0t7d0

# lifcp /dev/rdsk/c0t5d0:AUTO -

# setboot -a 8/0/19/0.5.0

The hardware address of the disk that will become the mirror disk can be determined with 'ioscan -fnC disk'. To check, use setboot without any arguments.

If desired, activate autosearch and autoboot by

# setboot -s on -b on

Use pvdisplay -v to the order of the logical volumes on the primary disk.

# pvdisplay -v /dev/dsk/c0t7d0

NOTE: In the following, the standard sequence lvol1, lvol2, lvol3, and so forth, is assumed.

Mirror the boot logical volume, primary swap logical volume, root logical volume and other logical volumes as needed, to the mirror disk in the correct sequence

# lvextend -m 1 /dev/vg00/lvol1 /dev/dsk/c0t7d0
# lvextend -m 1 /dev/vg00/lvol2 /dev/dsk/c0t7d0
# lvextend -m 1 /dev/vg00/lvol3 /dev/dsk/c0t7d0
# lvextend -m 1 (additional LV)

# 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

Both disks must be listed for root, boot and swap definitions.

-Goodluck

-USA..

Re: How to mirror vg00?

S.K. Chan — Fri, 11 Apr 2003 13:52:10 GMT

To echo Uday's comment .. (not to side step but) .. are you putting non-root FS in vg00 as well which is why you got so many lvols ? If yes in you may want to consider moving them out of vg00 before you do the mirroring.
There are a lot of references for the procedure so you should be getting that. I just wanted to add one more step (this may be optional .. ie only if you have ODE installed on your server - 11.x). After all the mirroring is done ..

Installing ODE (Offline Diagnostics)
# ll /usr/sbin/diag/lif/updatediaglif
=> Check if you got "updatediag" file on your system. If yes continue, if no you can skip all of these.
# lifls -l /dev/rdsk/
=> List content of LIF dir (you should have at least ISL,AUTO,HPUX,PAD,LABEL). If you see more LIF files other that those 5, you probably need to install ODE on your mirror disk.
# mkboot -b /usr/sbin/diag/lif/updatediaglif -p ISL -p AUTO -p HPUX -p PAD -p LABEL /dev/rdsk/
=> Install ODE LIF files while "protecting" the existing LIF files.
=> Use the file updatediaglif2 if you're running 64-bit.
# lifls -l /dev/rdsk/
=> Should now see the additional LIF files.

Re: How to mirror vg00?

Adisuria Wangsadinata_1 — Mon, 14 Apr 2003 07:35:33 GMT

Hi Joe,

To mirror your disk on your system you need Mirror/UX software. Check your system with the command below :

# swlist |grep Mirror

If the Mirror/UX software on your system, I refer you to use the knowledge mine document (# LVMKBRC00005103). You can see the same document at the url below :

http://itrc.hp.com/cki/bin/doc.pl/screen=ckiSearchResults?mode=id&searchString=LVMKBRC00005103

Hope this information can help you.

Best Regards,
AW

Re: How to mirror vg00?

Tim Sanko — Tue, 15 Apr 2003 16:57:12 GMT

I am lazy and assume you would have Mirrordisk-UX installed.

Here is a script I use
Boot into singleuser mode and have fun

pvcreate -B /dev/rdsk/c2t6d0
vgextend /dev/vg00 /dev/dsk/c2t6d0
mkboot /dev/rdsk/c2t6t0
mkboot -a "hpux -lq(;0)/stand/vmunix" /dev/rdsk/c2t6d0
lvlnboot -R
for LVOL in /dev/vg00/lv*
do
echo $LVOL
lvextend -m 1 $LVOL
done

Re: How to mirror vg00?

Mark Treen_1 — Wed, 16 Apr 2003 09:26:04 GMT

Hi Joe

Try this base script - it can be totally customised by you as you need...

pvcreate -f -B /dev/rdsk/c1t6d0
mkboot /dev/rdsk/c1t6d0
mkboot -b /usr/sbin/diag/lif/updatediaglif -p ISL -p HPUX -p LABEL /dev/rdsk/c1t6d0
mkboot -a "hpux (8/4.6.0;0)/stand/vmunix" /dev/rdsk/c1t6d0
vgextend /dev/vg00 /dev/dsk/c1t6d0
for i in 1 2 3 4 5 6 7 8
do
lvextend -m 1 /dev/vg00/lvol$i /dev/dsk/c1t6d0
done
lvlnboot -R

Hope it helps

Mark