There are currently two main NFS protocol versions in mainstream use. The first is version 3, which was introduced in 1995 as part of RFC 1813. NFSv3 implementations use separate daemons to implement the locking (rpc.lockd), status (rpc.statd), mount (rpc.mountd) and port assignments (portmap) features required by the protocol. NFSv4, which was introduced in 2003 as part of RFC 3530, takes a different approach. The locking and stat functions are now part of the core NFS implementation, so you no longer need to ensure that the portmap, rpc.lockd and rpc.statd daemons are running on your Linux NFSv4 clients and servers. There is a blurb regarding this in the Redhat Linux 5.5 administration guide:
“Because protocol support has been incorporated into the v4 protocol, NFSv4 has no interaction with the portmap, rpc.lockd, and rpc.statd daemons. NFSv4 listens on the well-known TCP port 2049, which eliminates the need for portmap interaction. The mounting and locking protocols have been incorporated into the V4 protocol which eliminates the need for interaction with rpc.lockd and rpc.statd. The rpc.mountd daemon is still required on the server, but is not involved in any over-the-wire operations.”
This is an interesting tidbit that I wasn’t aware of, and I’m learning a lot of new things as I dig through some of the NFS implementation details. If you are interested in learning how NFS truly works, check out the NFSv3 and NFSv4 RFCs! You will be glad you did!!
I mentioned previously that I picked up an Android phone a few weeks back. As typical geek, I have been on a quest to outfit my phone with some killer applications, and to make my phone use a truly awesome experience. I’ve tested dozens and dozens of applications, and thought I would share my favourites here:
1. News — Basic RSS reader that works.
2. Pandora — Plays music based on your musical prefernces.
3. Google sky — Provides a picture of the sky and displays the star and planet names.
4. Zillow — Shows you real estate listings based on your GPS location.
5. Youtube — Watch youtube movies with a touch of your finger.
6. FM radio — Listen to FM radio stations.
7. Cardiotracker — Provides an easy way to track your work outs.
8. Coupons — Gives you quick access to online coupons.
9. Wooopie cushion — Great for messing with your girlfriend or wife. ;)
10. Notes — Allows you to jot down notes on your phone.
11. First aid — Gives you access to first aid resources on your phone.
12. Gigstar — Notifies you when your favorite bands are performing.
There are dozens of other awesome applications available in the Google market, and I would love to get your thoughts on cool applications that aren’t listed above.
I have been trying to eat better, and am trying a variety of different things to get into a routine of healthy eating (this is super hard to do when you lived off of junk food for as long as I have!). As part of my new eating habits, I have been trying to incorporate more greens into my daily diet. One great way I have found for consuming greens (and the chlorophyl they contain) is by juicing wheatgrass. You may have seen people ordering wheatgrass shots at your favorite health foods store, and paying $3 – $4 for a shot of juice! That is absurd, given that you can make a serving of wheatgrass juice for a few pennies.
To get started making low cost wheatgrass juice, you will first need to pick up a juicer. I really dig the Hurricane Stainless Steel Manual Wheatgrass Juicer I purchased through Amazon, but you can use whatever juicer you have available (manual juicers are the way to go IMHO!). Once you have a good juicer, you need to find a good source of wheatgrass. You can purchase a grow your own wheatgrass kit from a variety of places, or you can head down to your favorite health food store and get a bag of wheatgrass for a couple of dollars. The bag of wheatgrass should last you for quite some time if stored properly, though you will get the most out of your wheatgrass if you consume it shortly after purchasing it.
Making your wheatgrass juice is a snap. Set up your juicer, clean the wheatgrass you plan to juice, and then stuff it in the top of the juicer and watch the delicious healthy green stuff spit out the side of the juicer. Now some people don’t care for the raw taste of wheatgrass. A number of recipes online recommend mixing it with your favorite juice beverages, especially ones that you make by hand. If you are new to juicing, you may want to check out The Wheatgrass Book as well as The Juiceman’s Power of Juicing. I learned a ton by reading each book, and have thoroughly enjoyed the delicious concoctions I’ve turned out! If you are an avid juicer, please leave me a comment. We can become juice buddies. :)