I did a rolling upgrade of a 5 node GFS environment from 4.5 to 4.6 over a 
week and had no interoperability issues.  I made sure that I had a solid 
roll-back plan before I upgraded each node just in case.





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[Linux-cluster] RHEL 4.5 -> 4.6 migration






Has anyone migrated from an existing 4.5 to the newer 4.6 cluster suite? 
We would like to roll out 4.6 in our 11-node cluster, but only one node at 
a time, over the course of 2-weeks.  Does the two versions intermix well 
enough to do that?   Or do we need to do take some kind of special care or 
precaution, like when injecting this dilithium crystal chamber with an 
inverse tachyon pulse from the main deflector dish?
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