topic Re: setup mirroring disk in Operating System - HP-UX

setup mirroring disk

wanaka_1 — Thu, 11 Jan 2001 05:27:00 GMT

Hi,

Can anyone point out any procedure that I need to follow in order to setup mirroring.

I have two disks available and I want to resinstall the HPUX11. All FS should be in the first disk and second disk is act as a mirror.

please help

Re: setup mirroring disk

Dan Hetzel — Thu, 11 Jan 2001 06:52:21 GMT

Hi Wanaka,

Setup of mirroring is an easy task (c?t?d0 is 2nd disk):

1. pvcreate -B /dev/rdsk/c?t?d0
2. vgextend /dev/vg00 /dev/dsk/c?t?d0
3. mkboot /dev/rdsk/c?t?d0
4. mkboot -a "hpux -lq" /dev/rdsk/c?t,d0
5.
6. For x in 1 2 3 4 5 6 7 8 9
do
lvextend -m 1 /dev/vg00/lvol$x /dev/dsk/c?t?d0
done
7. lvlnboot -R

Best regards,

Dan

Re: setup mirroring disk

Eric SAUBIGNAC — Thu, 11 Jan 2001 09:13:05 GMT

Hi Wanaka,

Just a few more features to add to Dan's procedure

3. I do like the -l option. I had some troubles on HPUX 9.X if not used. May be it's OK now, but i'm a bit supersticious ... ?
5. mkboot -b /usr/sbin/diag/lif/updatediaglif -p ISL -p AUTO -p HPUX -p LABEL /dev/dsk/c?t?d0
5.2 before point number 6, make sure that lvol1 is the boot volume, lvol2 the swap area and lvol3 the root volume.
For example, use a pvdisplay -v /dev/dsk/ | pg. If not, you MUST do the lvextend first on the boot volume, then swap area, then root volume
Order of others logical volumes doesn't matter.
8 It could be a good idea to add a setboot -a where HW path can be get with lssf /dev/dsk/c?t?d0.

Eric,

PBFWME : Please Be Fair With My English

Re: setup mirroring disk

Eric SAUBIGNAC — Thu, 11 Jan 2001 09:16:28 GMT

Erratum :

In point 5, mkboot should be done on the raw device. Replace /dev/dsk/c?t?d0 with /dev/rdsk/c?t?d0

Eric,

PBFWME : Please Be Fair With My English

Re: setup mirroring disk

Andreas Voss — Thu, 11 Jan 2001 09:23:21 GMT

Hi,

i have written a script to mirror the vg00, see attachment.

Regards

Re: setup mirroring disk

Darrel Louis — Thu, 11 Jan 2001 10:58:39 GMT

Hi,

Attached you will find a document with instructions.

Good Luck

Re: setup mirroring disk

Patrick Wallek — Thu, 11 Jan 2001 20:43:08 GMT

A good "cookbook" approach is found in the System Administrators Task Manual.

Here is the link for the 10.20 version of the document. Most of the information is applicable to version 11 as well.

http://docs.hp.com/hpux/onlinedocs/B2355-90672/B2355-90672.html

Re: setup mirroring disk

Ajitkumar Rane — Fri, 12 Jan 2001 01:43:43 GMT

Finally after step 7, it is always good to check if you see both the disks as bootable.
do lvlnboot -v . this should show lvols on both the disk for root,boot,swap and not sure about dump.A couple of time I ran into problems.After performing step 7 rebooted the system using the mirror copy and it did not come up, finally I had to boot in single user mode and found that the secound disk showed as boot disk but the lvols were not marked as boot root and swap. so I did lvlnboot -r /dev/vg00/lvol3, lvlnboot -b /dev/vg00/lvol2 lvlnboot -s /dev/vg00/lvol2, lvlnboot -d /dev/vgxy/lvoldump.as far as I know we cant configure the dump if does not lie within the 2gb boundry of the physical vol.

Good luck

Re: setup mirroring disk

Tom Danzig — Tue, 16 Jan 2001 13:48:05 GMT

Just a note: I assume you have purchased MirrorDisk/UX? You need it to do mirroring. It costs extra and is not part of the base OS.