Here in this post we will the steps involved for PowerHA migration
- Take pre checks, mksysb, cluster snapshot,clone rootdisk and boot with cloned disk
- Stop cluster on both nodes and reboot nodes
smitty cl_stop
select all nodes leave rest as default - After reboot start cluster services
Smitty cl_start
select all nodes leave rest as default - Add repository disk
Smitty sysmirror
Cluster Nodes and Networks
Manage Repository Disks
Add a Repository Disk
Repository Disk [] (here select disk from pick up list)
Note : Before adding repository disk make sure disk has same number size and after adding have same PVID - Sync cluster
Smitty sysmirror
Cluster Nodes and Networks
Verify and Synchronize Cluster Configuration - verify CAA disk added to vg by below commands
lsvg –p caavg_private
clmgr query repository - Bring down cluster
smitty cl_stop - Sync cluster
clmgr sync cluster - replace repository disk to new disk
clmgr replace repository hdiskXX
10.Sync cluster
clmgr sync cluster
11.Start Cluster services and check for caa disk
clmgr query repository
svg –p caavg_private
- Stop cluster services and export vgs on both nodes
smitty cl_stop
exportvg vgname - .Bring down servers and handover to SAN for Encapsulation
- After Encapsulation import cluster vgs on both nodes with major number
Get disk number by comparing LUNID’s PRE output of lspv –u output with current one
importvg -c -y vgname -V majornumber hdiskXX - Start Cluster services manually
- Bring up RG’s manually as before in nodes