topic Re: lvchange problem in Operating System - HP-UX

lvchange problem

Dimitry Snezhkov — Fri, 20 Dec 2002 16:37:24 GMT

Hello, all

HPUX 11.0 . Trying to
change strict/contiguous allocation policy on /dev/vg00/lvol3 ( root )
to strict by executing
lvchange -C n /dev/vg00/lvol3

Got :
Can not change to non-contiguous allocation policy
Logical Volume "/dev/vg00/lvol3" must be contiguous.

Created dummy lvol with contiguous policy and successfully lvchange'd
it back.

What is special about lvol3?
Should I do that in single user?
Thanks for your help.
Dimitry

Re: lvchange problem

Pete Randall — Fri, 20 Dec 2002 16:39:52 GMT

Dimitry,

What's in lvol3? I'm guessing it's your swap area - which HAS to be contiguous.

Pete

Re: lvchange problem

Dimitry Snezhkov — Fri, 20 Dec 2002 16:41:06 GMT

lvol3 is /( root )

Re: lvchange problem

Ken Hubnik_2 — Fri, 20 Dec 2002 16:41:22 GMT

Usually lvol3 in vg00 is typically your swap which means it is a little different.

Re: lvchange problem

Dimitry Snezhkov — Fri, 20 Dec 2002 16:43:18 GMT

I thought lvol2 is Swap ...

Re: lvchange problem

Patrick Wallek — Fri, 20 Dec 2002 16:43:23 GMT

vg00/lvol1, vg00/lvol2 and vg00/lvol3 (/stand, pri. swap and /) MUST be contiguous. This is a requirement of the OS.

Why do you want to change it to a non-contiguous policy? Are you trying to extend /? If so why do you want to extend it?

If you are trying to extend it, you should first look to see if there is anything unusual taking up space (like /dev/rmt/om instead of 0m).

If you must extend /, your best bet is to utilize Ignite/UX and create a make_tape_recovery tape, boot from the tape and then resize your LVOL sizes.

Re: lvchange problem

Pete Randall — Fri, 20 Dec 2002 16:43:48 GMT

Dimitry,

Post your bdf -l output.

I believe / and /stand have to be contiguous as well.

Pete

Re: lvchange problem

Dimitry Snezhkov — Fri, 20 Dec 2002 16:44:53 GMT

I do need to extend..
Your advice is very helpful.
Thanks.

Re: lvchange problem

Ken Hubnik_2 — Fri, 20 Dec 2002 16:45:54 GMT

Your right lvol3 is root than I believe it must be contiguous.

Re: lvchange problem

Patrick Wallek — Fri, 20 Dec 2002 16:48:58 GMT

Here is the web page for Ignite/UX:

http://software.hp.com/products/IUX/

To create a recovery tape, use the command:

/opt/ignite/bin/make_tape_recovery -a /dev/rmt/?mn -I -v -x inc_entire=vg00

This will archive your entire VG00 to tape.

Make a couple of these. Then boot from the tape, and the menu will come up which will allow you to modify various things. It is at this point that you can change your LVOL sizes for any of the VG00 lvols.

Ignite/UX is a FREE download.

Re: lvchange problem

Ken Hubnik_2 — Fri, 20 Dec 2002 16:50:10 GMT

Do a man on lvcreate..... at the bottom there is a warning about certain filesystems IE root,swap, and dump that must be contigous