hacmp question topo

[alexia32]

hello

I have a cluster on prod and need to modify the disk heatbeat replaced by a new disk on the Configure HACMP Communication Interfaces/Devices.
I could add the new one and then remove the old one (pointing on the old disk) via hacmp Topology.
The question is can I do it online (sure it will work) but how then I synchronise properly the cluster while online...
I didn't find anything on CSPOC to modfiy it.
Cheers
Al

 

[ogniemi]

you can add extra (new disks) diskhb communication lines and then remove old ones.

all can be done online.

of course first you need to prepare diskhb VG (enhanced_concurrnet) and import it to second cluster node.

when the VG is present on both nodes, go to:

smitty cm_extended_config_menu_dmn

and run "Discover HACMP-related Information from Configured Nodes"

Now new diskhb devices are discovered and you need to add them, so go to:

smitty cm_config_hacmp_communication_interfaces_devices_menu_dmn
->Add Communication Interfaces/Devices
->Add Discovered Communication Interface and Devices
->Communication Devices
and select new diskhb pairs.
You can now also remove old diskhb comminication linces.

Once you add/configure it on active node run Actual synchronization:

smitty cm_ver_and_sync.select


best regards,
r.