Hello all! Recently I installed and configured a Scientific Linux to run as a high performance computing cluster with 15 slave nodes and one master. I did this while an older system with RedHat 5.0 was running in order to avoid users to stop their computations. All gone well. I migrated node to node and now I have a flawlessly cluster with SL6!.
Well, the fact is that while migrating I used the node1 to install SL6 while the node0 was hosting the old master operating system. Node1 has less ram and no raid capabilities, so I configured a Raid5 per software when installing, using md linux software (which comes per default to a normal installation when you select "raid"). Node0 has a Raid 5 hardware controller. Now I want to move the new master node1, into node0. I thought about this and I have to shutdown node1, node0, and with a LiveCD partition the harddisk of node0 and copy the contents of the disk of node1 into it. Then make grub install. All right but, what do you think that I should take in consideration regarding to Raid and md? I will have to modify /etc/fstab and also delete /etc/mdadm.conf to avoid md running. Anything more? Thank you very much!
