If you have a local disk partition that is mounted on /src and you plan to use the autofs service to mount other source directories, the NFS service hides the local partition whenever you try to reach it. Therefore, You need to mount the partition in some other location.
For example, to mount the partition on /export/src you would add an entry in the /etc/vfstab file such as the following:
/dev/dsk/d0t3d0s5 /dev/rdsk/c0t3d0s5 /export/src ufs 3 yes -
You also need to add an entry in auto_src. In this example, the name of the system is terra.
terra terra:/export/src