Jon Jeffels

Received this little popup while running the Adobe Acrobat Reader setup/updater.

What's wrong with this image?

Congratulations Adobe.

I am impressed.

:rolls eyes:

Ran across a nice little utility site which can help to ensure that your blog is visible to the internet:

http://ismyblogworking.com/blog.jeffels.net

You can substitute any blog URL, and you’ll not only get information about whether your blog is up, but you’ll also find some nice load-time and indexing stats.

Today I start with my new employer.  I certainly hope to be more “inspired” in this position and to have more opportunities in my spare time to update this blog.

I’ve certainly appreciated all the positive [and critical] feedback given both on-line and off-line, and will attempt to produce something that is more worth reading.

Thanks for your patience, guys and gals!

Check out this link: of the oil spill video in the gulf from the rover cam.

An interesting article from Carsonified.com on web-based data visualizations.

http://carsonified.com/blog/design/4-ways-to-create-web-based-data-visualisations/

Okay, so this can easily be superseded by your source language when connecting to a SQL database, but it’s an interesting way to check for string permutations/matches.

http://planet.mysql.com/entry/?id=23103

I read an interesting article on http://www.tummy.com/Community/Articles/famous-dns-server/ and found that google offers public DNS on 8.8.8.8.  Maybe it’s time to stop using 4.2.2.x to relieve some of the load on the servers and start using 8.8.8.8?

Thoughts?

An awesome writeup from Paul Hite on migration considerations for Google Apps:

http://www.paulhite.com/2010/03/reflections-on-google-apps.html

Interesting video regarding SSDs and RAID.  No technical backup data to verify this, but it does seem feasible!

http://goo.gl/f7Of

Sorry for the long delay in posting.  Illness and long work hours prevented much time for this, but I just wanted to offer this little tidbit…

For those of you familiar with Linux, you may be aware that it supports both hardware and software RAID types.  Naturally hardware RAID tends to make better use of the resources available due to things such as bus and CPU offloading, but software RAID typically leaves you with more control should something disastrous happen.

In this little post I’ll go over a quick-and-easy method of verifying the soft-RAID array.  A lot of sysadmins I know will use mdadm to force a rebuild which is…clunky at best.  I believe the example below to be safer.  In my example, my RAID array will be md0.

fs1:/ # cd /sys/block/md0/md

fs1:/sys/block/md0/md # echo check >sync_action
[Wait a few moments]
fs1:/sys/block/md0/md # cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sdc1[0] sde1[3] sdd1[1]
1953503488 blocks super 1.0 level 5, 128k chunk, algorithm 0 [3/3] [UUU]
[>....................]  check =  3.1% (30306176/976751744) finish=283.3min speed=55672K/sec
bitmap: 0/466 pages [0KB], 1024KB chunk
unused devices: <none>