topic Re: Pvmove in the root volume group in Operating System - HP-UX

Pvmove in the root volume group

ASSIST — Tue, 23 Jan 2001 15:25:25 GMT

Hi everybody! Can anyone tell me if I can make a pvmove of all the lvols of the vg00 placed in one disk to another disk of the vg00 too, without problems?

Thanks.

Re: Pvmove in the root volume group

Patrick Wallek — Tue, 23 Jan 2001 15:33:07 GMT

I would be VERY careful trying to use pvmove with anything related to VG00. Some of the LVOLs probably would not be a problem, like /usr, /var, /opt, but I don't know that I would want to try moving something like swap, /, or /stand. You must take into consideration that vg00 has special requirements for how it is laid out because it contains the boot information.

Hope this helps you.

Re: Pvmove in the root volume group

MARTINACHE — Tue, 23 Jan 2001 15:53:16 GMT

Hi,

I'm not sure that il will work.

I suggest you 2 solutions :

1) You can mirror your disk but I suppose that if you want to pvmove, you didn't bought MIRROR/UX.

2) Create an Ignite Tape (make_recovery -ACi)

Boot on this tape
Modify the root disk in order to restore vg00 on the other disk.
This work fine with a lot of security.

Regards,

Patrice.

Re: Pvmove in the root volume group

MARTINACHE — Tue, 23 Jan 2001 15:53:56 GMT

Re: Pvmove in the root volume group

ASSIST — Wed, 24 Jan 2001 07:57:29 GMT

Finally I've test it in a test machine.

I've pvmove all the lvols of the vg00 in the same order they where placed in the original disk (lvol1 has to be the first lvol in the boot disk).
lvlnboot -v gave me the correct information and i could reboot the machine from the new disk without problems.

I know that althoug it works it's a little bit risked method, but i only need a backup to do it without risks.

Re: Pvmove in the root volume group

Mr Amir Mujtabain — Wed, 24 Jan 2001 10:18:11 GMT

Hi,

It will not work becuase you need to create boot LIF for booting the drive.

Thanks

Re: Pvmove in the root volume group

Darrel Louis — Wed, 24 Jan 2001 11:51:05 GMT

Hi,

these are the steps you need to perform.
- Make a Ignite Recovery tape + Fullbackup
- pvcreate -B
- mkboot -l /dev/rdsk/
- mkboot -a "hpux /stand/vmunix" /dev/rdsk/

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

- mkboot -a "hpux -lq /stand/vmunix" /dev/rdsk/
If you choose, you can set the alternate boot path variable according to
- setboot -a

- vgextend /dev/vg00 /dev/dsk/
move root
- pvmove /dev/vg00/lvol1 /dev/dsk/ /dev/dsk/
move swap
- pvmove /dev/vg00/lvol2 /dev/dsk/ /dev/dsk/
- pvdisplay -v /dev/dsk/
- lvlnboot -R /dev/vg00
- lvlnboot -v /dev/vg00
- pvmove other Logical Volumes
- vgreduce the old disk.

Good Luck

Darrel