I have two node RAC servers hosting 4 databases running on 18.104.22.168 version in RHEL OS. The underlying LUNs assigned to the ASM is not currently multipathed, meaning the disk sequence would change when my server node reboots causing my ASM not to mount the diskgroups and therefore I have planned to create new disks using ASMLib with newly added LUNs which would be multipathed.
I got new LUNs and I created new disks using ASMlib as well in node 1. Once created in node 1 and scanned the same in node 2 for disks to be discovered in node 2. The disks are discovered in both the nodes.
After creating diskgroups when I try to mount them, in node 1 it is getting mounted, but in node 2 it fails giving
ORA-15063: ASM discovered an insufficient number of disks for diskgroup
Please note I have not given scan exclude and scan order in both the nodes inspite of this being multipathed disks, yet the same is getting mounted in node 1 but not in node 2.
What could be the issue?