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    Every audio version of Jupiter Broadcasting’s productions.

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    Latest Episodes:
    Check My Sums | BSD Now 340 Mar 05, 2020
    Show notes

    Why ZFS is doing filesystem checksumming right, better TMPFS throughput performance on DragonFlyBSD, reshaping pools with ZFS, PKGSRC on Manjaro aarch64 Pinebook-pro, central log host with syslog-ng on FreeBSD, and more.

    Headlines

    Checksumming in filesystems, and why ZFS is doing it right

    One of the best aspects of ZFS is its reliability. This can be accomplished using a few features like copy-on-write approach and checksumming. Today we will look at how ZFS does checksumming and why it does it the proper way. Most of the file systems don’t provide any integrity checking and fail in several scenarios:

    • Data bit flips - when the data that we wanted to store are bit flipped by the hard drives, or cables, and the wrong data is stored on the hard drive.
    • Misdirected writes - when the CPU/cable/hard drive will bit flip a block to which the data should be written.
    • Misdirected read - when we miss reading the block when a bit flip occurred.
    • Phantom writes - when the write operation never made it to the disk. For example, a disk or kernel may have some bug that it will return success even if the hard drive never made the write. This problem can also occur when data is kept only in the hard drive cache.

    Checksumming may help us detect errors in a few of those situations.

    DragonFlyBSD Improves Its TMPFS Implementation For Better Throughput Performance

    It's been a while since last having any new magical optimizations to talk about by DragonFlyBSD lead developer Matthew Dillon, but on Wednesday he landed some significant temporary file-system "TMPFS" optimizations for better throughput including with swap.

    Of several interesting commits merged tonight, the improved write clustering is a big one. In particular, "Reduces low-memory tmpfs paging I/O overheads by 4x and generally increases paging throughput to SSD-based swap by 2x-4x. Tmpfs is now able to issue a lot more 64KB I/Os when under memory pressure."

    • https://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/4eb0bb82efc8ef32c4357cf812891c08d38d8860

    There's also a new tunable in the VM space as well as part of his commits on Wednesday night. This follows a lot of recent work on dsynth, improved page-out daemon pipelining, and other routine work.

    • https://gitweb.dragonflybsd.org/dragonfly.git/commit/bc47dbc18bf832e4badb41f2fd79159479a7d351

    This work is building up towards the eventual DragonFlyBSD 5.8 while those wanting to try the latest improvements right away can find their daily snapshots.

    News Roundup

    Why ZFS is not good at growing and reshaping pools (or shrinking them)

    recently read Mark McBride's Five Years of Btrfs (via), which has a significant discussion of why McBride chose Btrfs over ZFS that boils down to ZFS not being very good at evolving your pool structure. You might doubt this judgment from a Btrfs user, so let me say as both a fan of ZFS and a long term user of it that this is unfortunately quite true; ZFS is not a good choice if you want to modify your pool disk layout significantly over time. ZFS works best if the only change in your pools that you do is replacing drives with bigger drives. In our ZFS environment we go to quite some lengths to be able to expand pools incrementally over time, and while this works it both leaves us with unbalanced pools and means that we're basically forced to use mirroring instead of RAIDZ.

    (An unbalanced pool is one where some vdevs and disks have much more data than others. This is less of an issue for us now that we're using SSDs instead of HDs.)

    Using PKGSRC on Manjaro Linux aarch64 Pinebook-pro

    I wanted to see how pkgsrc works on aarch64 Linux Manjaro since it is a very mature framework that is very portable and supported by many architectures – pkgsrc (package source) is a package management system for Unix-like operating systems. It was forked from the FreeBSD ports collection in 1997 as the primary package management system for NetBSD.

    One might question why use pkgsrc on Arch based Manjaro, since the pacman package repository is very good on its own. I see alternative pkgsrc as a good automated build framework that offers a way to produce independent build environment /usr/pkg that does not interfere with the current Linux distribution in any way (all libraries are statically built)

    I have used the latest Manjaro for Pinebookpro and standard recommended tools as mentioned here https://wiki.netbsd.org/pkgsrc/how_to_use_pkgsrc_on_linux/

    A Central Log Host with syslog-ng on FreeBSD

    • Part 1

    syslog-ng is the Swiss army knife of log management. You can collect logs from any source, process them in real time and deliver them to wide range of destinations. It allows you to flexibly collect, parse, classify, rewrite and correlate logs from across your infrastructure. This is why syslog-ng is the perfect solution for the central log host of my (mainly) FreeBSD based infrastructure.

    • Part 2

    This blog post continues where the blog post A central log host with syslog-ng on FreeBSD left off. Open source solutions to check syslog log messages exist, such as Logcheck or Logwatch. Although these are not too difficult to implement and maintain, I still found these to much. So I went for my own home grown solution to check the syslog messages of the SoCruel.NU central log host.

    Beastie Bits

    • FreeBSD at Linux Conf 2020 session videos now online
    • Unlock your laptop with your phone
    • Managing a database of vulnerabilities for a package system: the pkgsrc study
    • Hamilton BSD User group will meet again on March 10th](http://studybsd.com/)
    • CharmBUG Meeting: March 24th 7pm in Severn, MD ***

    Feedback/Questions

    • Andrew - ZFS feature Flags
    • Sam - TwinCat BSD
    • Dacian - Freebsd + amdgpu + Lenovo E595
    • Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv

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    Project Catch Up | Choose Linux 30 Mar 05, 2020
    Show notes

    We revisit some of the projects we have covered in previous episodes to see what we've stuck with and what we haven't.

    Qubes OS and Tails, a handy Android app, building websites, easy Arch, the cloud, hardware hacking, and more.

    Links:

    • Qubes OS
    • virt-manager
    • Boxes
    • Regolith
    • Chris Tries i3 for the First Time... LIVE
    • NewPipe
    • Hugo
    • Endeavour OS
    • Endless OS

    What Linux is Best At | LINUX Unplugged 343 Mar 03, 2020
    Show notes

    We try the Mac desktop for 30 days, find out what we think it does best, and where Linux will always have it beat.

    This episode kicks off the start of a bigger conversation series.

    Plus community news, very handy picks, and more.

    Special Guests: Alan Pope, Maria Komarova, and Michael Aaron Murphy .

    Links:

    • GNOME Shell 3.36 release Looking Great
    • Firefox 75 On Wayland Now To Have Full WebGL, Working VA-API Acceleration - Phoronix
    • Don’t forget about DST!
    • FOSS Talk Live - June 20th at The Harrison near King’s Cross in London
    • Keep the conversation going join us on Telegram
    • Late Night Linux – Episode 84 – Late Night Linux
    • How Docker Makes All Linux Distros Look Alike - Container Journal
    • Docker Desktop for Mac - Docker Hub
    • Docker Desktop for Windows
    • Simon Ferquel on Twitter: “We just updated @docker desktop edge channel with a build supporting Windows 10 Home Insider (you need WSL2 to run it on Home). So happy to see this at last!” / Twitter
    • Yong Sheng on Twitter: “running #docker on #wsl2 from a fresh reboot of #windows10 20H1: 9 sec startup, 1.1gb of ram, no hyper-v MobyVM required. passthrough support into my existing ubuntu wsl instance. been waiting for this for years! https://t.co/6ernWi4Hoz” / Twitter
    • Chris Tries a Mac and it Makes him Think
    • Steam Survey Updated For February 2020 With Latest Linux Figures - Phoronix
    • Carl Richell on Twitter: Pop!OS tiling is shaping up nicely. We’re hoping to have a 20.04 beta release available in about a month.
    • pop-os/shell: Pop!OS Tiling GNOME Extension
    • catt - Cast All The Things allows you to send videos from many, many online sources to your Chromecast.
    • The Silver Searcher - A code searching tool similar to ack, with a focus on speed.
    • Ripgrep - ripgrep recursively searches directories for a regex pattern

    Pentesting Problems: Bryson Bort | Jupiter Extras 60 Mar 03, 2020
    Show notes

    Ell sits down with Bryson Bort to discuss pentesting with Scythe, Red Team vs Blue Team operations, and the benefits that a Purple Team might have on the industry.

    Special Guest: Bryson Bort.

    Links:

    • Scythe
    • Scythe on Twitter
    • Scythe Blog: The Purple Team - Organization or Exercise?
    • Security BSides
    • DEF CON
    • WarGames - Wikipedia
    • Jupiter Extras: Threat Hunting 101

    Linux Action News 147 Mar 01, 2020
    Show notes

    Bruce Schneier puts his name behind Solid, Firefox starts to roll out DNS over HTTPS as default, and Microsoft's Linux first device ships to customers.

    Plus a birthday gift to Raspberry Pi users, Collabora comes to mobile, and more.

    Links:

    • Collabora brings smooth editing to Android and iOS — This release fully integrates the iOS and Android apps into our Collabora Office product family.
    • The Story of Collabora Office for Phones
    • Firefox continues push to bring DNS over HTTPS by default for US users — The rollout will continue over the next few weeks to confirm no major issues are discovered as this new protocol is enabled for Firefox’s US-based users.
    • Firefox now defaults to DNS-over-HTTPS for US netizens and some are dischuffed about this
    • The Facts: Mozilla’s DNS over HTTPs
    • Securing Firefox with WebAssembly — RLBox, a new sandboxing technology.
    • Inrupt, Tim Berners-Lee's Solid, and Me — I have joined a company called Inrupt that is working to bring Tim Berners-Lee's distributed data ownership model that is Solid into the mainstream.
    • Building a World-Class Team at Inrupt
    • Microsoft's Azure Sphere, its Linux-based microcontroller plus cloud service, hits general availability — Microsoft is making its Azure Sphere secure IoT service generally available after several years of testing and previews.
    • A birthday gift: 2GB Raspberry Pi 4 now only $35 — The fall in RAM prices over the last year has allowed us to cut the price of the 2GB variant of Raspberry Pi 4 to $35.
    • The Raspberry Pi 4 gets a RAM upgrade

    Brunch with Brent: Brandon Bruce | Jupiter Extras 59 Feb 28, 2020
    Show notes

    Brent sits down with Brandon Bruce, Director of Customer Support at Linux Academy. We explore the world of support, how his former role as professional chef informs his "Kitchen Brigade" approach to building a support team, analytics data's ability to reveal surprising user experience patterns, and more.

    Special Guest: Brandon Bruce.

    Links:

    • Linux Academy
    • How To Train Your Customers: Changing the Course of Support - BSides San Antonio TX
    • BSidesSATX - BSides San Antonio, TX
    • Brigade de cuisine, Kitchen Brigade - Wikipedia
    • Heat by Bill Buford - Goodreads — An Amateur's Adventures as Kitchen Slave, Line Cook, Pasta-Maker, and Apprentice to a Dante-Quoting Butcher in Tuscany
    • Kitchen Confidential by Anthony Bourdain - Goodreads — Adventures in the Culinary Underbelly
    • Medium Raw by Anthony Bourdain - Goodreads — A Bloody Valentine to the World of Food and the People Who Cook
    • Linux Bible by Christopher Negus, Christine Bresnahan - Goodreads
    • BSidesBCS - BSides Bryan/College Station
    • SCaLE - Southern California Linux Expo
    • Brandon Bruce - @Netcromancer on Twitter
    • Brent Gervais - @brentgervais on Twitter

    \o/ | User Error 86 Feb 28, 2020
    Show notes

    Whether open source needs to be a complete experience, a deep need for conflict, preferred social media, and our favorite emoji.

    00:00:30 Why do you prefer Twitter over Facebook?
    00:07:57 Can Linux on the desktop ever succeed without a full ecosystem?
    00:18:32 Hoodies: zip or no zip?
    00:22:26 Do people really want all the drama to calm down?
    00:29:40 What's your most commonly used emoji?


    BSD Fundraising | BSD Now 339 Feb 27, 2020
    Show notes

    Meet FuryBSD, NetBSD 9.0 has been released, OpenBSD Foundation 2019 campaign wrapup, a retrospective on OmniOS ZFS-based NFS fileservers, NetBSD Fundraising 2020 goal, OpenSSH 8.2 released, and more.## Headlines

    Meet FuryBSD: A New Desktop BSD Distribution

    At its heart, FuryBSD is a very simple beast. According to the site, “FuryBSD is a back to basics lightweight desktop distribution based on stock FreeBSD.” It is basically FreeBSD with a desktop environment pre-configured and several apps preinstalled. The goal is to quickly get a FreeBSD-based system running on your computer.

    You might be thinking that this sounds a lot like a couple of other BSDs that are available, such as NomadBSD and GhostBSD. The major difference between those BSDs and FuryBSD is that FuryBSD is much closer to stock FreeBSD. For example, FuryBSD uses the FreeBSD installer, while others have created their own installers and utilities.

    As it states on the site, “Although FuryBSD may resemble past graphical BSD projects like PC-BSD and TrueOS, FuryBSD is created by a different team and takes a different approach focusing on tight integration with FreeBSD. This keeps overhead low and maintains compatibility with upstream.” The lead dev also told me that “One key focus for FuryBSD is for it to be a small live media with a few assistive tools to test drivers for hardware.”

    Currently, you can go to the FuryBSD homepage and download either an XFCE or KDE LiveCD. A GNOME version is in the works.

    NetBSD 9.0

    The NetBSD Project is pleased to announce NetBSD 9.0, the seventeenth major release of the NetBSD operating system.

    This release brings significant improvements in terms of hardware support, quality assurance, security, along with new features and hundreds of bug fixes. Here are some highlights of this new release.

    News Roundup

    OpenBSD Foundation 2019 campaign wrapup

    Our target for 2019 was CDN$300K. Our community's continued generosity combined with our corporate donors exceeded that nicely. In addition we received the largest single donation in our history, CDN$380K from Smartisan. The return of Google was another welcome event. Altogether 2019 was our most successful campaign to date, yielding CDN$692K in total.

    We thank all our donors, Iridium (Smartisan), Platinum (Yandex, Google), Gold (Microsoft, Facebook) Silver (2Keys) and Bronze (genua, Thinkst Canary). But especially our community of smaller donors whose contributions are the bedrock of our support. Thank you all!

    • OpenBSD Foundation 2019 Fundraising Goal Exceeded

    A retrospective on our OmniOS ZFS-based NFS fileservers

    Our OmniOS fileservers have now been out of service for about six months, which makes it somewhat past time for a retrospective on them. Our OmniOS fileservers followed on our Solaris fileservers, which I wrote a two part retrospective on (part 1, part 2), and have now been replaced by our Linux fileservers. To be honest, I have been sitting on my hands about writing this retrospective because we have mixed feelings about our OmniOS fileservers.

    I will put the summary up front. OmniOS worked reasonably well for us over its lifespan here and looking back I think it was almost certainly the right choice for us at the time we made that choice (which was 2013 and 2014). However it was not without issues that marred our experience with it in practice, although not enough to make me regret that we ran it (and ran it for as long as we did). Part of our issues are likely due to a design mistake in making our fileservers too big, although this design mistake was probably magnified when we were unable to use Intel 10G-T networking in OmniOS.

    On the one hand, our OmniOS fileservers worked, almost always reliably. Like our Solaris fileservers before them, they ran quietly for years without needing much attention, delivering NFS fileservice to our Ubuntu servers; specifically, we ran them for about five years (2014 through 2019, although we started migrating away at the end of 2018). Over this time we had only minor hardware issues and not all that many disk failures, and we suffered no data loss (with ZFS checksums likely saving us several times, and certainly providing good reassurances). Our overall environment was easy to manage and was pretty much problem free in the face of things like failed disks. I'm pretty sure that our users saw a NFS environment that was solid, reliable, and performed well pretty much all of the time, which is the important thing. So OmniOS basically delivered the fileserver environment we wanted.

    NetBSD Fundraising 2020 goal

    Is it really more than 10 years since we last had an official fundraising drive?

    Looking at old TNF financial reports I noticed that we have been doing quite well financially over the last years, with a steady stream of small and medium donations, and most of the time only moderate expenditures. The last fundraising drive back in 2009 was a giant success, and we have lived off it until now.

    OpenSSH 8.2 released February 14, 2020

    OpenSSH 8.2 was released on 2020-02-14. It is available from the mirrors listed at https://www.openssh.com/.

    OpenSSH is a 100% complete SSH protocol 2.0 implementation and includes sftp client and server support.

    Once again, we would like to thank the OpenSSH community for their continued support of the project, especially those who contributed code or patches, reported bugs, tested snapshots or donated to the project. More information on donations may be found at:

    • https://www.openssh.com/donations.html

    Beastie Bits

    • FreeNAS vs. Unraid: GRUDGE MATCH!
    • Unix Toolbox
    • Rigs of Rods - OpenBSD Physics Game
    • NYCBug - Dr Vixie
    • Hamilton BSD User group will meet again on March 10th](http://studybsd.com/)
    • BSD Stockholm - Meetup March 3rd 2020

    Feedback/Questions

    • Shirkdog - Question
    • Master One - ZFS + Suspend/resume
    • Micah Roth - ZFS write caching
    • Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv

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    IRC is Not Dead | Self-Hosted 13 Feb 27, 2020
    Show notes

    Self-Hosted IRC solutions are better than ever. Alan Pope joins us to make a case for the classic way to communicate online and tells us about a modern client for the web, mobile, and desktop you run on your server.

    Plus, follow up on the new Self-Hosted wiki, and more.

    Special Guest: Alan Pope.

    Links:

    • World's Worst Best Drone Retrieval Device - YouTube — Having some fun watching my local flying crew/friends use the World's Worst Best Drone Retrieval Device.
    • You don't need a UI for docker containers — You really don't. Managing small deployments of containers from the command line is easier, faster and 'commit-able'. We're not talking about vast fleets of containers here but in this article I'll cover how I use docker-compose to manage over 30 docker containers in a simple, scalable and faster way than if you were using a UI.
    • awesome-selfhosted: A list of Free Software network services and web applications which can be hosted locally. — A list of Free Software network services and web applications which can be hosted locally. Selfhosting is the process of hosting and managing applications instead of renting from Software-as-a-Service providers
    • Linux Server Image Status
    • Quasseldroid IRC Client — Quassel makes IRC fun again – open a client anywhere, connect to your core, and have all your favourite channels and networks right there.
    • The Lounge — A web-based IRC client for the modern world! Once configured and started, users can access it from their browser or mobile device.
    • Install theloungeirc for Linux using the Snap Store
    • IRCCloud
    • Self-Hosted Show Wiki — Here you will find an open source, living and breathing repository of resources that we talk about on the Self Hosted podcast.

    Shrimps have SSHells | LINUX Unplugged 342 Feb 25, 2020
    Show notes

    A radical new way to do SSH authentication, special guest Jeremy Stott joins us to discuss Zero Trust SSH.

    Plus community news, a concerning issue for makers, an Arch server follow up, and more.

    Special Guests: Alex Kretzschmar, Brent Gervais, Martin Wimpress, and Neal Gompa.

    Links:

    • The makers of Jif peanut butter team up with Giphy to try to settle the GIF/Jif debate once and for all
    • Manjaro Linux on Twitter: After several months of development we are happy to announce Manjaro Linux 19.0 release, named Kyria!
    • Get in the C: Raspberry Pi 4 can handle a wider range of USB adapters thanks to revised design’s silent arrival
    • Brunch with Brent: Heather Ellsworth
    • Keep the conversation going join us on Telegram
    • Alex’s Blog: FAA Remote ID Proposal
    • FPVFC FAQ on FAA Remote ID NPRM - December 2019
    • Proposed Rule: Remote Identification of Unmanned Aircraft Systems
    • Introducing the Uber SSH Certificate Authority - Uber Security + Privacy - Medium
    • bless: Repository for BLESS, an SSH Certificate Authority that runs as a AWS Lambda function
    • How Uber, Facebook, and Netflix Do SSH
    • stoggi/sshrimp: 🦐SSH Certificate Authority in a Lambda (on the barbie)
    • “Zero Trust SSH” - Jeremy Stott (LCA 2020) - YouTube
    • linux.conf.au 2020 | Presentation: Zero Trust SSH
    • Keybase SSH
    • hallow: A SSH Certificate Authority designed for use with AWS native environments
    • BeyondCorp: A New Approach to Enterprise Security – Google Research
    • collascii - A collaborative ascii canvas
    • Ly - a TUI display manager
    • ChrisLAS Cast
    • Ubuntu Podcast

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