Merge pull request #406 from bgraef/main

update btrfs tutorial details

content/posts/ol/storage/post-20/index.md

@@ -2,7 +2,7 @@
 title: "Get Started with the Btrfs File System"
 date: 2021-11-01
 draft: false
-summary: "Learn how to get started with the Btrfs File System"
+summary: "Learn to create, extend, and recover a Btrfs file system on Oracle Linux."
 tags: ["ol", "lab", "tutorial", "ol-storage"]
 showDate: true
 ---
@@ -11,29 +11,29 @@ showDate: true
 
 :crescent_moon: [Lab](https://luna.oracle.com/lab/03f1fb2b-d4ef-4d1e-8a12-793cb3e3ffd8)
 
-:spiral_notepad: [Tutorial](https://docs.oracle.com/en/learn/btrfs-ol8)
+:spiral_notepad: [Tutorial](https://docs.oracle.com/en/learn/ol-btrfs)
 
 ## Details
 
-The Btrfs file system provides the capacity to handle pooling, snapshots, checksums, and multi-device spanning in existing Linux file systems. For an overview of the Btrfs file system and its features, see [Oracle Linux 8: Managing Local File Systems](https://docs.oracle.com/en/operating-systems/oracle-linux/8/fsadmin/btrfs-main.html#xd_co_f=NjUzNDIzODAtMTcwNy00YzFlLTgxMDItNTM2YjIwZjBkMmQ0~) .
+The Btrfs file system provides the capacity to handle pooling, snapshots, checksums, and multi-device spanning in existing Linux file systems. For an overview of the Btrfs file system and its features, see [Oracle Linux: Managing Local File Systems](https://docs.oracle.com/en/operating-systems/oracle-linux/9/fsadmin/btrfs-main.html).
 
-This tutorial describes how to set up your Oracle Linux system to use the Btrfs file system. This tutorial is targeted at users of Oracle Linux 8 or later.
+This tutorial describes setting up a directory on external storage on your Oracle Linux system to use the Btrfs file system.
 
 ### Objectives
 
 In this tutorial, you will learn how to:
 
-- Create a Btrfs file system on Oracle Linux 8
+- Create a Btrfs file system
 - Run basic Btrfs commands to perform tasks such as:
   - Checking file system usage
   - Extend the size of the file system
   - Recover a missing device
 - Test and see how the file system works
 
 ### Prerequisites
+- Minimum of a single Oracle Linux system running the UEK kernel
 
-The tutorial uses the following system:
+- Each system should have Oracle Linux installed and configured with:
+    - A non-root user account with sudo access
+    - Access to the Internet
 
-- An Oracle Linux 8 system with the following configurations:
-  - has multiple storage devices installed
-  - runs the UEKR6 kernel