I have a Nexenta storage box (Solaris), which exports an NFS share. Mac OS X and older Ubuntu clients can mount the NFS share just fine, without any special options. Later version of Ubuntu simply returns:
mount.nfs: access denied by server while mounting 10.0.0.10:/volumes/Shares/share
From the Nexenta logs it doesn't seem like Ubuntu is even trying to communicate and the logs on the Ubuntu client is also empty.
The Nexenta is configured to NFSv3 only. My fstab entry is:
10.0.0.10:/volumes/Shares/share/ /mnt/images/ nfs vers=3,rw,nodev,nosuid,noexec
Is there something I need to consider when mounting Solaris/Nexenta NFS shares from Linux?