topic Re: HP/UX config required for Upgrading EVA from 6000 to 8000 in Operating System - HP-UX

HP/UX config required for Upgrading EVA from 6000 to 8000

Guy Beukes — Tue, 05 Feb 2008 12:38:10 GMT

Hello All,

Im going to be involved in upgrading an EVA6000 to an 8000 on the weekend. My role will be to perform the hp/ux administration required to complete this task and I have worked out all the steps required, but would appreciate any comments , suggestions and thoughts. HP will be performing the EVA upgrade.

System: HP/UX 11iv2 x 2, SG

Preimplementation steps:
Vgexport all volume groups,
1. vgexport -s -v -p -m /home/phit/config/${i}.map ${i}

2. Take a backup of /etc/lvmpvg, /etc/lvmtab, /etc/lvmconf, bdf, vgdisplay -v, group minor numbers and all devices listed under ioscan -fnC disk.

Implementation steps:
Once new EVA connected to unix machines
1.ioscan -fnC disk
2.insf -e
3.vgexport all existing vg besides vg00 with no switches therefore destroying existing information.
4. Vgimport steps
mkdir /dev/vg*
mknod /dev/vg*/group c 64 0x0?000
vgimport -s -v -m /home/phit/config/${VOL_GRP}.map ${VOL_GRP}
vgchange -a y ${VOL_GRP}
vgcfgbackup ${VOL_GRP}
5. Repeat on second node, making sure that vg are not active on the first node.
6. Cluster query and conf
cmquerycl -v -C /etc/cmcluster/cmclconf.ascii -n $My_host1_name -n $My_host2_name
copy cmclconf.ascci to other node
cmapplycl
7. Make vg cluster aware
vgchange -a y vg*
vgchange -c y vg*
8. Start cluster

Please let me know if there is something I am missing, I know some detail is missing from the cluster steps, but we have a program that applies and starts our cluster.

Re: HP/UX config required for Upgrading EVA from 6000 to 8000

Guy Beukes — Tue, 05 Feb 2008 13:30:47 GMT

One thing I forgot, we use PVLINKS and therefore vgreduce and vgextend will be required to sort disks into correct order.

Re: HP/UX config required for Upgrading EVA from 6000 to 8000

Srikanth Arunachalam — Tue, 05 Feb 2008 14:43:58 GMT

Greetings Guy,

Its very important that you obtain the information of unique ID's of physical link in your configuration, before you undergo environmental changes. Since you have more than one alternate link. The attached script is a standard utility to store the system configuration information. This will be really handy when something goes wrong due to wrong setup of EVA.

The script is called cfg2html_hpux.sh.
It helped me once when I lost the VxVM disk on UAT system.

Thanks,
Srikanth

Re: HP/UX config required for Upgrading EVA from 6000 to 8000

Guy Beukes — Tue, 05 Feb 2008 14:56:09 GMT

Hi Srikanth,

Thanks for the reponse, when you mention Unique ID's of physical link are you refering to the H/W Paths?

Cheers