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HA inhibits some of the nodes to rejoin the pool after SAN crash


Pierre Gauthier

Question

XenServer 7.1 CU2. We had an awful crash of a SAN and a few nodes of a pool would not join the pool once the SAN recovered. 2 nodes out of 4 no longer had management interfaces until we did host-emergency-ha-disable on them. What troubles us is that not all nodes had the same behavior. Does anyone know why the behavior was different between the nodes ?

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That is really small, so not it.

 

I have seen the management interface disappear before. Sometimes it miraculously recovered after multiple reboots sometimes I had to do an emergency network reset and redo the interfaces that were not picked up from the pool settings. Never understood what triggered it, and have no clue whether HA played a role or not.

 

-=Tobias

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