Title: Week 12 at a Glance
Course: TAACCCT - Open Source Server Admin.- CIS 235 > Section: Course Content

Week 12 at a Glance

1.    Chapter 15 - Linux Operations & Administration 1st  Edition Authors: Nadine Basta, Dustin Finamore, Alfred Basta, Serge Palladino - Publisher: Cengage Learning

2.    Read Chapter 15

3.    Watch a YouTube video How inodes work

4.    Read a short article about journaling in ext3: What is the ext3 filesystem?

5.    Watch a YouTube video Managing Storage with the Linux Logical Volume Manager (LVM)

6.    Complete activities 15-1, 15-2, and 15-3

7.    There is nothing to turn in for these three activities

8.    These are going to be longer, slow moving, activities (so plan accordingly)

9.    Participate in the Chapter 15 discussion board

10.  Take the Chapter 15 Reading Quiz - Assignment generated from the following publisher test pool. - Linux Operations & Administration 1st  Edition Authors: Nadine Basta, Dustin Finamore, Alfred Basta, Serge Palladino - Publisher: Cengage Learning

Intro:

In this chapter, we are talking about file systems.   Currently, ext4 with journalling is the most common Linux file system, although a couple of newer file systems are in position to replace them.   RedHat has switched to XFS, and others consider Btrfs, uhm, better...

This week, you are going to create two more virtual computers (one to play around with standard partitioning), and the other to play with LVM.   Additionally, if you want more practice - you can add more virtual disks to a system (they will appear as /dev/sdb, /dev/sdc, etc...) and format them.

Finally, we are getting fairly "deep" into file systems, so please ask questiosn on the discussion board, and I'll answer.

More info:

To learn more about file systems in RedHat (another Linux distribution), take a look at:

What's New in Red Hat Enterprise Linux 7

About Journaling:

To me, a journalled file system is a wonderful thing.  It allows "bad things" to happen to the computer (such as losing power unexpectedly), and still have a clean file system.   In Windows, NTFS is already a journaled file system (but FAT isn't).   I strongly prefer a journaled file system (or a "log based file system") over a "standard" one.

About Logical Volume Management (LVM):

Without a LVM, adding a partition means making changes to the disk's partition table.   If you already have blank space at the end of the disk, this is easy.  If your blank space is spread throughout the disk, it becomes hard.  LVM allocates the entire disk (or even a collection of disks) to it, and then creates it's own "partitions" (which is calls volumes) from that.   Volumes can be spread anywhere you have free space.   Don't confuse LVMs for RAID.  While both can use multiple disks, and spread out the data, the "how" and "why" are very differerent.  As a comparison, modern Windows include their own version of a LVM which they call "dynamic disks."

Attached Files: | - Week 12 at a Glance.docx