topic Re: Adding LV in Operating System - HP-UX

Adding LV

WW451512 — Wed, 14 Jul 2010 09:46:05 GMT

Hi All,

We have existing serviceguard in a two-node cluster with package only on one node. Everything is up and running fine.
All we need, is to add a LV to existing VG in the package.

I have got following steps, let me know if these are correct:
1. Create LV in that VG.
2. create mount point on both nodes

3. Edit package control script:
LV[1]=/dev/vg_name/lv_name; FS[1]=/mount_pt <<<< New LV entry

4. Copy the pkg_name.cntl file to the other node.
5. Manually mount the filesystem on primary node and start using the LV.
6. During next package start the filesystem will be mounted automatically with package control script.
7. During failover the LV will be mounted on he other node.

Are these steps okay??

Re: Adding LV

SoorajCleris — Wed, 14 Jul 2010 10:20:13 GMT

http://docs.hp.com/en/B3936-90100/ch07s05.html#babcidhg

Regards
Sooraj

Re: Adding LV

VVS — Wed, 14 Jul 2010 11:27:27 GMT

On the primary node:
1. Create LV
2. Create FS
3. Create Mount Point
4. Do VG exoport:
vgexport â p â m -s -v /dev/vg_name.
5. Copy the map file to the adoptive nodes.
On the adoptive node:
1. vgexport /dev/vg_name
2. mkdir /mount_point
3. mkdir /dev/vg_name
4. mknod /dev/vg_name/group c 64 0x0#0000 (use the same minor number!!)
5. vgimport â m -s â v /dev/vg_name
On the primary node:
6. cmhaltpkg
7. Update the package control file and distribute it to the adoptive nodes.
7. cmrunpkg
8. cmmodpkg â e

Re: Adding LV

WW451512 — Wed, 14 Jul 2010 13:27:50 GMT

Hi Again..

While adding an LV:
Is cmapplyconf required?
Is vgexport/vgimport really required?

Thanks..

Re: Adding LV

singh sanjeev — Wed, 14 Jul 2010 13:48:26 GMT

After creation of LV , it is very much important to do vgexport/vgimport on cluster node,so LVM volume group and its associated logical volumes is consistent on both node.

You can check the any variation via cmcheckconf command.

# I do not think that cmapplyconf is needed after creation of LV.

Re: Adding LV

Rita C Workman — Wed, 14 Jul 2010 18:11:32 GMT

cmapplyconf - not required in this case
vgexport/vgimport - required

assigning point - optional, but recommended

Rgrds,
Rita

Re: Adding LV

WW451512 — Thu, 15 Jul 2010 03:19:10 GMT

thanks all..