SlugOS boot from NFS
NFS roots are not officially supported with SlugOS 4.8.
Unofficially, here's a hack provided by mvester that can get it working.
Start from a fresh flash, and install the necessary stuff for NFS (the nfs, sunrpc, portmap, and lockd kernel modules) to the internal flash. you can do this by doing ( ipkg install kernel-module-nfs )
It may be necessary to do
to ensure that nfs (+ sunrpc and lockd which depend on it) are properly loaded,
(or reboot) if portmap is not running.
Run turnup as described
turnup nfs -i server:/root-filesystem
Once you've done the turnup to the nfs partition, cd to the /boot directory (on the flash), and edit the /boot/nfs file, so that it looks like the one below (addition of lines 9, 11, 12, and 19).
Now on the nfs root filesystem (which is probably easiest to access from the NFS server itself at this point), edit the etc/network/interfaces file, and comment out or remove the "auto eth0" line in that file. Reboot, wait for the triple-beep that would indicate a sucessful boot.