Yesterday,I wanted to migrate our production system on Power7 to Power8 machine.I installed PowerHa installation before.I exported vg and imported two our PowerHa(System Mirror) cluster nodes.It hasnt got any problem this step.But when I added my emrevg to Resource group and tried to verify our cluster,I got an error.Verification was failed.
importvg -y emrevg hdisk2
cd /var/hacmp/clverify vi clverify.log
Verifying participating nodes for resource group 'Emre_RG' have volume group emrevg emre_cls1 PASS Major numbers match PASS emre_cls2 PASS Major numbers match FAIL ERROR: The major number for VG emrevg is not the same on all nodes.
I searched on Internet and Find some forum posts.
I exported vg on two nodes.
l ran this command.
root@emre_cls1:/var/hacmp/clverify # lvlstmajor 41,49...
I cant use this number but I can use 42,43 etc.I used this command on two nodes.And verify successfully.
importvg -V 42 -y emrevg hdisk2
Maybe you will encounter this problem.Its really helpfull.