For the rolling migration, we begin with the standby node decano1. Complete the following  steps. Tip:  A demonstration of performing a rolling migration from PowerHA V7.1.3 to PowerHA  V7.2.2 sp1 is shown in this YouTube video.  Run  smitty clstop  and select the options that are shown in Figure 4-2. The OK response  appears quickly. Make sure that the cluster node is in the  ST_INIT  state by reviewing the  lssrc -ls clstrmgrES|grep state  output. Alternatively, you can accomplish this task by using the  clmgr  command: clmgr stop node=decano1 In our scenario, we have supported AIX levels for PowerHA V7.2.3 and do not need to  perform this step, but if you do this step, then a restart is required before continuing. 1. Stop cluster services on node decano1. 2. Upgrade AIX. 3. Verify that the  clcomd  daemon is active, as shown in Figure 4-3. Stop Cluster Services Type or select values in entry fields. Press Enter AFTER making all desired changes. [Entry Fields] * Stop now, on system restart or both now + Stop Cluster Services on these nodes [decano1] + BROADCAST cluster shutdown? true + * Select an Action on Resource Groups Bring Resource Groups> + F1=Help F2=Refresh F3=Cancel F4=List F5=Reset F6=Command F7=Edit F8=Image F9=Shell F10=Exit Enter=Do [root@decano1] /# lssrc -s clcomd Subsystem Group PID Status  clcomd caa 6685136 active Figure 4-2 Stopping the cluster services Figure 4-3 Verifying that clcomd is active 94  IBM PowerHA SystemMirror V7.2.3 for IBM AIX and V7.2.2 for Linux