It sounds like the export might not be in the vfiler... vfiler0 can see the volumes but can't export nfs. Is the export in the exports file in the vfiler? For example, "rdfile /vol/vFiler2Vol0/etc/exports" to check... or "vfiler run * exportfs" to check exports. You can showmount -e vfilerIP from the client too..
does showmount -e vfilerIP on the host show the mounts? You might want to check the nfs options in the vfiler too... also might want to grand root=accss to Filer2Vol1... although anon=0 for Vol0 will give all access to root.
When the client tried to connect to nfs there was amessage in the syslog of the storage: NFSv4 response to client x.x.x.x. for volume 0x2 was slow, 761 > 60 (in seconds). Is it possible that it is caused by a time drift.