---------- Forwarded message ---------
From: Trip Tucker <triptuckertrek(a)gmail.com>
Date: Mon, Dec 8, 2025 at 9:37 PM
Subject: Wed=Tutorial=What is a Router / Firewall? & MAIN=Btrfs (B-TRee
FileSystem) a copy-on-write (COW) file system.
To: SLUUG general discussion <discuss(a)sluug.org>rg>, SLUUG Announcement List <
announce(a)sluug.org>
If you get a chance...please go out to
MeetUp.com and indicate you are
coming. You can even indicate you are brining a friend or 2. That would
help us get more attention during this holiday season. But, even if you
don't sign up there in MeetUp...DO COME!!
On Fri, Dec 5, 2025 at 4:14 PM Trip Tucker <triptuckertrek(a)gmail.com> wrote:
In 5 days....ie Wednesday 10 Dec, will be the monthly
general SLUUG mtng.
Please pass the word to your friends & coworkers!!
*BASIC Tutorial: **What is a Router / Firewall?* by *Grant Taylo*
<https://www.google.com/url?q=https://www.sluug.org/bio/Grant_Taylor&sa=D&source=calendar&usd=2&usg=AOvVaw3U_U07yFRWkEcq5yYvuhbX>
r
What are they? Why do you need/want them? Can I just take a
Linux box and turn it into a router/firewall? Or should I buy one new off
the shelf? Where does it go in your network?
AND the MAIN will be...
*MAIN Topic:* *"btrfs"* by *Lee_Lammert*
<https://www.google.com/url?q=https://www.sluug.org/bio/Lee_Lammert&sa=D&source=calendar&usd=2&usg=AOvVaw1zJdyS9F6qtGRX3OETuxUW>
.
*btrfs 100* → Intro / Fundamentals (for general Linux admins)
*btrfs 200* → Intermediate / Practical Ops (for sysadmins using Snapper,
subvolumes, RAID)
These will prepare you for the btrfs 500 that will be upcoming at a future
mtng in a week or a month.
*btrfs 500* → Deep Internals / Engineering Analysis (for kernel-savvy,
filesystem experts)
What it is:
Btrfs (*B*-*TR*ee *F*ile*S*ystem) is *a* *modern**,* *copy**-**on**-*
*write* *(**COW**)* *file* *system* *for* *Linux* that focuses on fault
tolerance, easy administration, and advanced features like snapshots,
built-in volume management, data checksums for self-healing, and
transparent data compression.
It supports multiple disks and RAID 0, 1, 10 configurations, and includes
features like online resizing and defragmentation.
Key features
-
Copy-on-Write (COW):
-
Snapshots:
-
Self-healing:
-
Volume management:
-
Data compression:
=≠=≠=≠=≠≠≠====≠
