Hi,
with a new installation running 5.5u3 2 hosts connected to NFS storage using infiniand for the storage network. The VMs all run fine, performance very good for the VMs, but something strange happens, when we connect the console via the vsphere client, it take between 20s and a couple of minutes for the console to connect and show the VMs display. While this is occuring all VMs on that host appear to hang disk IO, the VMs cant be fully interacted with, in the VMs (mostly the DCs) that are attempting to write to disk end up logging that the writes were delay for over say 35s or more.
How can i diagnose this, why could this be happening?
Thanks, any help in getting this fixed.
Forgot to add. The host appears to be perfectly responsive, I can SSH and also check that it can still contact the NFS stores, so the host itself hasnt hung up. Just that all VMs hang while waiting for the vm console to complete.