SAN / MPIO problems, LUN showing as Redirected Access.. Help plz!
have had MPIO errors appear overnight in our 2 host hyperV cluster.. at lunchtime today one of the hosts locked up, and although most of the VMs failed over to the other, a number failed to come back online due to the LUN they were on being unavailable to the host.
Once the failed host came back, the path to the LUN was available "redirected" and I cannot turn off redirection
Ive checked the SAN (Hitachi AMS 2100) and there doesnt seem to be any errors in there, the Clustering BPA doesnt seem to show anything that I notice as being an issue...
Theres multiple errors about multipath, clustering on one of the hosts
At the moment, if I lose the other host, I lost the path to the SAN.
Cluster Shared Volume 'Virtual Machine Drives 00' ('LUN 0000') is no longer directly accessible from this cluster node. I/O access will be redirected to the storage device over the network through the node that owns the volume. This may result in degraded performance. If redirected access is turned on for this volume, please turn it off. If redirected access is turned off, please troubleshoot this node's connectivity to the storage device and I/O will resume to a healthy state once connectivity to the storage device is reestablished.
What should I be looking at as the event logs dont really give me a reason why things have started to play up..