topic Re: Cluster lock disk PV in Operating System - HP-UX

Cluster lock disk PV

Srinikalyan — Thu, 04 Dec 2008 14:32:39 GMT

Hi,
We are in the process of the changing the cluster lock PV in the cluster ascii file. Currently that PV is in one volume group which has some user data on that PV. IF we make that as the cluster lock disk and re-applying the conf, will that the data in that PVbe corrupted?
Thanks,
Srini
Note: HP-UX 11iv2, Serviceguard A.11.17

Re: Cluster lock disk PV

Ganesan R — Thu, 04 Dec 2008 14:45:47 GMT

Hi Srinikalyan,

No. There will be flag in PVRA of the disk. Other than that nothing will be written in the cluster lock disk. User data area will not be touched at all.

You can very well use any user disk provided the disk should be visible to all the cluster nodes.

Re: Cluster lock disk PV

Stephen Doud — Thu, 04 Dec 2008 14:47:39 GMT

No - the cluster lock structure is stored in an area of the disk that does not involve the user data area. Therefore, you can redesignate another lock disk without fear of obliterating or corrupting the user data on it.
However, SG A.11.17 will require that you halt the cluster in order to update the cluster binary with the new lock disk.

Re: Cluster lock disk PV

Srinikalyan — Mon, 08 Dec 2008 10:15:11 GMT

Thanks and closing the thread.