Following the CentOS team’s announcement of their repackaging of Red Hat’s Cluster Suite and Global File System (GFS) applications, I decided to give them a run. Results so far have been less than encouraging.
It took a fair while to download the required source RPMs and build them (working in my emulated environment, of course). After installing them, I tried in my usual style (read only enough documentation to find the commands to start something) to work out how to start things up. This resulted in one system locked up and others flooding each other with UDP traffic and using up almost all the CPU on the system. All is not lost though; I now have another bug in my Cacti monitoring system to chase down. 😉
Edit: I switched to the GULM lock manager instead of DLM, and that resolved the CPU/traffic flood problem and allowed me to create and bring online a GFS filesystem. Yay me! I also solved the Cacti bug — when altering the maximum allowed value for a Data Source, you need to use rrdtool to update the definition of the corresponding RRA.
Crossed Wires 