Upgrade GPFS 3.4 to Spectrum Scale 4.1.1
It's funny because it's true…. That´s how I want to start with today's story… And today will I be more technical then normally. Let's start from beginning before I complain too much and showing how easy it is. I have now heard twice where end-users of GPFS heard it isn't possible to upgrade from GPFS 3.4 filesystem to Spectrum Scale 4.x without to shut down the entire cluster. This is not true and I will now show it for you how easy it is and how it's works. I want with today's topic explain how easy it is to upgrade a GPFS 3.4 filesystem to Spectrum Scale 4.1.1 without to shut down the cluster. This how my test system looks like and see the time stamp when I start with my upgrade. [root@gpfs1 gpfs]# date Tue Jul 28 14:52:21 CEST 2015 [root@gpfs1 src]# mmlscluster GPFS cluster information ======================== GPFS cluster name: gpfstest.cristie.se GPFS cluster ...