If you are using OpenSolaris and NFS for your datastores and using ESX you need to share out your zfs filesystems with anon=0 since ESX wants to write to the NFS datastore as root.
zfs set sharenfs=anon=0 usbpool/virtuals
I wouldn’t mind having stuff like this if I could figure out how to properly get logging of the issues/connections in OpenSolaris. Anybody know how to increasing logging for the NFS services in OpenSolaris?
you might rather want to use:
zfs set sharenfs=rw=@192.168.1.0/24,root=@192.168.1.0/24 storage/vms
which allows access for the entire subnet, or alternatively restrict access further down to the esx server(s) ip.