We have an Xsan 2.1 environment with 3 SANs, 3 MDCs and 11 clients. Occasionally we've had the odd failover occur over the years. We're currently in a state where the 3 MDCs and 2 of the clients are running Mavericks and Xsan 3.1. We're eventually aiming to move all cilents to Mavericks and Xsan 3.1 but in the mean time the older snow leopard machines are running Xsan 2.2.2 (build 148)
Every once in a while a SAN will failover to it's secondary metadata controller. However, recently we had our second SAN failover and then fail BACK to the original controller. I read in the physical copy of the Xsan 2 Administration guide (2009) I have that this is called failback and that a failback should never occur automatically: it must be manually instigated by person. However, we had a failback occur without a person insitigating it.
Has anyone experienced this? Is it a concern? I'm heading to the site to investigate the console logs and I'll post them below shortly.