I ran into a strange automount issue where my NFS shares were not being mounted at boot time. nfs/client was enabled, my entry in /etc/vfstab was correct, and issuing a `mount -a` worked flawlessly. So what was the problem? Well, this was the entry in my vfstab file:
biff:/paulie - /export/home/paulie/biff nfs - yes proto=tcp,vers=3
I wanted to place my NFS share inside a zfs filesystem so that it was easily accessible in my home directory.
[paulie@doc ~]$ zfs list | grep export/home/paulie
rpool/export/home/paulie 78.3M 2.82G 78.3M /export/home/paulie
Turns out this is not such a good idea since the /etc/vfstab file is read *before* zpool's are imported and mounted. This means that all NFS shares need to be listed outside any filesystems to be mounted at boot time and then symlinked in.
[root@doc ~]# mkdir /biff
[paulie@doc ~]$ ln -s /biff/ /export/home/paulie/biff/
... and then changing around vfstab ...
biff:/paulie - /biff nfs - yes proto=tcp,vers=3
And that's it, NFS should automount now:
[paulie@doc ~]$ df -kh | grep biff
biff:/paulie 2.7T 1.2T 1.4T 47% /biff