topic Re: Cluster Lock disk in Operating System - HP-UX

Cluster Lock disk

Mose Burton Jr — Thu, 15 Jun 2006 12:53:56 GMT

I am using a shared disk for the lock disk. I am moving to another SAN and the lock disk will now reside on another device. How can I make the new device the lock disk. 1) vgchange the VG 2) vgextend 3) vgreduce the old device? 4) vgexport 5) vgimport... can this be done while the cluster is running?

Re: Cluster Lock disk

Jeff_Traigle — Thu, 15 Jun 2006 13:01:12 GMT

You must bring the cluster down to change the lock disk. Since the lock disk is dependent on a disk device, the LVM stuff is irrelevant.

Re: Cluster Lock disk

Steven E. Protter — Thu, 15 Jun 2006 13:11:17 GMT

Shalome Mose,

You will need as noted earlier to close the cluster down.

Then:

1) create a new volume group
2) Migrate the data
3) Designate a lock disk in cluster configuration.
4) cmcheckconf
5) cmapplyconf

I do not have faith in your methodology of migrating the data. It won't work. Take a full backup of data once the cluster is down.

SEP

Re: Cluster Lock disk

Steven E. Protter — Thu, 15 Jun 2006 13:11:29 GMT

Re: Cluster Lock disk

Kenan Erdey — Thu, 15 Jun 2006 13:15:46 GMT

hi;

you must reconfigure vg_cluster_lock_vg and vg_cluster_lock_pv parameters in cluster ascii file. after that you must run

cmcheckconf -v -k -C /etc/cmcluster/xxx.ascii
and
cmapplyconf -v -k -C /etc/cmcluster/xxx.ascii

where xxx is your cluster file name.in some changes cluster does not need to be halted. but cluster must be halted i think before your job.

Re: Cluster Lock disk

Mose Burton Jr — Thu, 15 Jun 2006 13:26:56 GMT

Thank You!!! I have the steps down.