topic Re: How to unexport VG? in Operating System - HP-UX

How to unexport VG?

Mousa55 — Sat, 16 May 2009 09:20:57 GMT

Hi All,

I am trying to build a cluster and
I am exporting one volume group frome node 1 to node 2 and all steps has been successfully
And when execute the bdf command in first node I will see
/dev/vg01 /mcsg without lvol1 but in node 2 will see
/dev/vg01/lvol1 /mcsg
But I want now to unexport this volume group, don’t need to export this VG
How I can do it that

Thanks & kind Regards

Re: How to unexport VG?

Suraj K Sankari — Sat, 16 May 2009 09:34:23 GMT

Hi,

In HP there is nothing called "unexport" there is two things export and import thats all

Suraj

Re: How to unexport VG?

Mousa55 — Sat, 16 May 2009 11:31:39 GMT

Hi All,

you are not understand my questions, i mean how i can to cancel the export process in a second node, i don't need to export this VG (vg01) to second node.

Thanks & kind Regards

Re: How to unexport VG?

Sherif A. Louis — Sat, 16 May 2009 11:42:24 GMT

just run:
vgchange -a n vg01
vgexport vg01

this deletes vg01 from ur system as if it was never there...

next time do a
vgexport -v -m /tmp/vg01.map -f /tmp/vg01.out -p -s vg01
from the first system move the .map and the .out file to the second
create the vg
vgimport -v -s -m /tmp/vg01.map -f /tmp/vg01.out vg01

hope this solves it

Re: How to unexport VG?

Sajjad Sahir — Sat, 16 May 2009 12:15:53 GMT

Dear nejad

deactivate the volume group from second node
vgchange - a n /dev/vgname
vgexport /dev/vgname in second node
it will remove the volume group in second node

thanks and regards

Sajjad

Re: How to unexport VG?

Sajjad Sahir — Sat, 16 May 2009 12:23:34 GMT

Dear Nejad

what u have done in node1 volume group, u created new logical volume? please clearly mention?

then only we can send the complete procedure for it, tell the volume grup is in shared mode.

thanks and regards

Sajjad Sahir

Re: How to unexport VG?

Asif Sharif — Sun, 17 May 2009 04:10:34 GMT

Hi Nejad,

Read the below doc.

Exporting a Volume Group
importing a Volume Group
http://docs.hp.com/en/5992-4589/ch03s03.html#bajbfead

Regards,
Asif Sharif

Re: How to unexport VG?

Asif Sharif — Sun, 17 May 2009 04:32:54 GMT

Hi Nejad,

Perform the following steps to vgexport & vgimport before building the cluster.

on node2 you need to run this command.

umount /mcsg
vgchange -a n vg01
vgexport -p -v -s -m /tmp/vg01.map vg01
rcp /tmp/vg01.map node2:/tmp/

On Node 1

mkdir /dev/vg01
mknod /dev/vg01/group c 64 0x0X0000(Give the same number as on node2 --check with command #ll /dev/*/group)
vgimport -v -s -m /tmp/vg01.map vg01

vgchange -a y vg01
mkdir -p /mcsg
mount /dev/vg01/lvol1 /mcsg

Regards,
Asif Sharif

Re: How to unexport VG?

Mousa55 — Sun, 17 May 2009 04:38:56 GMT

Thanks for all,

Yes Mr. Sajjad I have in node 1 one volume group and one logical volume
/dev/vg01/lvol1
And I know all steps to export and import VG from node 1 to node 2
But I want to cancel this exporting and back again without export vg01
On node 2

Thanks & kind Regards

Re: How to unexport VG?

Sajjad Sahir — Sun, 17 May 2009 04:50:04 GMT

hi dear Nejad

my guess was correct u know the all steps
u want to remove the volume group from node2

u have to deactivate the volume group from node2 first then export the volume group
it will remove the volume group from u node2.

thanks and regards

Sajjad Sahir

Re: How to unexport VG?

Mousa55 — Sun, 17 May 2009 05:08:37 GMT

Hi All,
"it will remove the volume group from u node2"
how i can do it? by vgremove command.

thanks

Re: How to unexport VG?

Mousa55 — Sun, 17 May 2009 05:18:20 GMT

Thanks for all

Re: How to unexport VG?

Sajjad Sahir — Sun, 17 May 2009 05:49:08 GMT

deactivate the volume group first before exporting the volume by using

vgchange -a n /dev/vgname

after that export the volume group

vgexport /dev/vgname(it will remove the volume group from u system)

>>it is already mentioned in our previous thread.

thanks and regards

sajjad Sahir