VMs residing on vSAN datastore have become inaccessible.

Products

• VMware vSAN

Issue/Introduction

After recovering from a power outage, the hosts are in a vSAN Cluster Partition


vmkping between hosts over the vSAN vmkernel portgroup fail
vSAN vmk is part of a LAG (Link Aggregation Group) in a vSphere Distributed Switch

Environment

vSAN

Cause

Portchannel group at the switch side is not configured correctly

Resolution

To resolve the issue, check if the the Channel group mode is configured correctly, at the Physical Switch. If its set to anything other than LACP, change it to LACP.

Additional Information

For information on the requirements and steps to configure LAG for Distributed Port Groups, see Configure a Link Aggregation Group to Handle the Traffic for Distributed Port Groups