Sometimes scratch2 becomes inacessible. This guide should help get it up and running again.
If /export/users/scratch2 is empty:
Applications > System Tools > Terminal
$ sudo mount --bind /home/users/scratch2 /export/users/scratch2
Restart NFS
$ sudo service nfs-kernel-server restart
Login to node as someone with sudo
If control has a different IP:
$ sudo nano /etc/hosts
and change to the correct ip (check on brayton with ifconfig)
Unmount scratch2 and remount
$ sudo umount -l /home/users/scratch2 $ sudo mount /home/users/scratch2