SFHA "In-Family" Upgrade ?
While discussing options to upgrade SFHA cluster (standard, phased, rolling), the topic of "In-Family" upgrade was mentioned. I have never heard of this, so want to ask if anyone has experience with In-Family upgrade ?
The concept is that In-Family upgrades are very minor, so the protocol versions remain compatible before and after upgrade, allowing a mix of pre and post upgrade nodes to join the same cluster. Thus eliminating the need for more complex "phased" and "rolling" upgrades documented in the SFHA Installation Guide.
In this particular case the existing version is SFHA 5.1 SP1 RP1 and the upgrade version will be SFHA 5.1 SP1 RP4. Would that be considered an In-Family upgrade, or would the protocol versions be incompatible and therefore require a phased or rolling upgrade ?
Thank You,
Ken W
Conclusion: In-family upgrade is a myth.
The person that I talked to was assuming without knowing. With the help of Veritas TS, we ended up testing SFHA 5.1 SP1 RP1 to RP4 without phased/rolling methods, and found that the upgraded RP4 node could not join the existing RP1 cluster.
Join Error:
2015/05/06 20:14:16 VCS WARNING V-16-1-10067 Local node leaving cluster before joining as engine versions differ. Local engine version: 0x5010a28; Current cluster version: 0x5010a00
FYI, here are some commands to display protocol version of various components of the cluster:
---- VxVM protocol ---- vxdctl list vxdctl protocolversion vxdctl support ---- LLT protocol ---- lltstat -c configuration parameters lltconfig -V protocol current and maximum lltconfig -M driver version lltconfig -W protocol supported and current ---- GAB protocol ---- gabconfig -v driver version + protocol gabconfig -W protocol range and current ---- HAD protocol ---- haclus -value EngineVersion hasys -display attribute EngineVersion vxassist version engine_A.log (for Had startup message)Ken W
