That did it - I enabled auth_none on the server side, and I can now boot a Xen vm against an opensolaris NFS server - thanks again!
To get it going, I did: root:/# zfs set sharenfs=sec=sys:none,anon=0,rw=nfstest.mycompany.com datavol/nfsboottest root:/# sharemgr show -vp zfs/datavol/nfsboottestdatavol/nfsboottest nfs=(anon="0") nfs:sys=(rw="nfstest.mycompany.com") nfs:none=(rw="nfstest.mycompany.com") /volumes/datavol/nfsboottest -- This message posted from opensolaris.org