topic Re: Queries regarding VGs in HP UX in Operating System - HP-UX

Queries regarding VGs in HP UX

Jessica P — Mon, 07 Aug 2006 08:05:31 GMT

I am configuring HP UX serviceguard for oracle RAC..
Now i have few queries ...
1 Do i have to mention the OCR and voting disk in the OPS_VOLUME group in cluster configuration file or in the cluster aware LVM
wht about the quoram disk..

2 i removed a VG by removing the /dev/vg directory and rebuilding the /etc/lvmtab
and recreated new VG with same name and using pvcreate -f cmd/vgcreate cmd
if i run vgscan -a i can see the new vg but also it says physical volume belong to a volume group (use vgimport).
where is this refrence to earlier vg..

Re: Queries regarding VGs in HP UX

nanan — Mon, 07 Aug 2006 08:20:59 GMT

Answer;
1. you need to reflect the cluster LOCK vg and disks in cluster config file
and then have to compile for initial RAC cluster configuration

you have to do

2. what are you meaning that pvcreate -f cmd/vgcreate ???
when you remove vgs, use vgexport

"if i run vgscan -a i can see the new vg but also it says physical volume belong to a volume group (use vgimport)."
is that the previous vgs information is remain because you didn't format disks.

Re: Queries regarding VGs in HP UX

Marvin Strong — Mon, 07 Aug 2006 08:31:30 GMT

To my knowledge you need all that information in the cluster configuration.

When removing vg's vgexport is the preferred method.

If you did pvcreate -f /dev/rdsk/c??t??d??
if that was executed correctly then you will not get the belongs to a volume group error.

Re: Queries regarding VGs in HP UX

Steven E. Protter — Mon, 07 Aug 2006 09:13:20 GMT

Shalom,

Its better to use vgexport to remove volume groups. That give you the option if you forgot to back something up of restoring it using vgimport.

SEP