lvchange problem

[Dimitry Snezhkov]

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

[Pete Randall]

Dimitry,

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

Pete

[Dimitry Snezhkov]

lvol3 is /( root )

[Ken Hubnik_2]

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

[Dimitry Snezhkov]

I thought lvol2 is Swap ...

[Patrick Wallek · Accepted solution]

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.

[Pete Randall]

Dimitry,

Post your bdf -l output.

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

Pete

[Dimitry Snezhkov]

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

[Ken Hubnik_2]

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

[Patrick Wallek]

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.

[Ken Hubnik_2]

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