NOTES
This episode of BSDNow is brought to you by Tarsnap and the BSDNow Patreon

Headlines

Full system backups with FFS snapshots, ZFS and dump(8)

Tuning Recordsize in OpenZFS

News Roundup

Optimizing FreeBSD Power Consumption on Modern Intel Laptops

I need to remember to check for ZFS filesystems being mounted

Use tcpdump to save wireless bridge

Beastie Bits

• [FreeBSD on the Vortex86DX CPU](https://www.cambus.net/freebsd-on-the-vortex86dx-cpu/)
• [HAMMER2 vs USB stick pulls](https://www.dragonflydigest.com/2022/03/22/26800.html)
• [New US mirror for DragonFly](https://www.dragonflydigest.com/2022/03/09/26742.html)
• [HelloSystem 13.1 RC1](https://github.com/helloSystem/ISO/releases/tag/experimental-13.1-RC1)
• [Video introduction to OpenBSD 7.0](https://www.youtube.com/watch?v=KeUsE-3nSes)
• [Losses in the community](https://minnie.tuhs.org/pipermail/tuhs/2022-April/025643.html)

Tarsnap

• This weeks episode of BSDNow was sponsored by our friends at Tarsnap, the only secure online backup you can trust your data to. Even paranoids need backups.

Feedback/Questions

• Sam - BSD Laptops
• Reese - Electric Groff
• Alexandra - New to BSD

• Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv ***

This episode was brought to you by

Headlines

Enabling FreeBSD on AArch64

• One of the things the FreeBSD foundation has been dumping money into lately is ARM64 support, but we haven't heard too much about it - this article should change that
• Since it's on a mainstream ARM site, the article begins with a bit of FreeBSD history, leading up to the current work on ARM64
• There's also a summary of some of the ARM work done at this year's BSDCan, including details about running it on the Cavium ThunderX platform (which has 48 cores)
• As of just a couple months ago, dtrace is even working on this new architecture
• Come 11.0-RELEASE, the plan is for ARM64 to get the same "tier 1" treatment as X86, which would imply binary updates for base and ports - something Raspberry Pi users often complain about not having ***

OpenBSD's tcpdump detailed

• Most people are probably familiar with tcpdump, a very useful packet sniffing and capturing utility that's included in all the main BSD base systems
• This video guide is specifically about the version in OpenBSD, which has gone through some major changes (it's pretty much a fork with no version number anymore)
• Unlike on the other platforms, OpenBSD's tcpdump will always run in a chroot as an unprivileged user - this has saved it from a number of high-profile exploits
• It also has support for the "pf.os" system, allowing you to filter out operating system fingerprints in the packet captures
• There's also PF (and pflog) integration, letting you see which line in your ruleset triggered a specific match
• Being able to run tcpdump directly on your router is pretty awesome for troubleshooting ***

More FreeBSD foundation at BSDCan

• The FreeBSD foundation has another round of trip reports from this year's BSDCan
• First up is Kamil Czekirda, who gives a good summary of some of the devsummit, FreeBSD-related presentations, some tutorials, getting freebsd-update bugs fixed and of course eating cake
• A second post from Christian Brueffer, who cleverly planned ahead to avoid jetlag, details how he got some things done during the FreeBSD devsummit
• Their third report is from our buddy Warren Block, who (unsurprisingly) worked on a lot of documentation-related things, including getting more people involved with writing them
• In true doc team style, his report is the most well-written of the bunch, including lots of links and a clear separation of topics (doc lounge, contributing to the wiki, presentations...)
• Finally, the fourth one comes to us from Shonali Balakrishna, who also gives an outline of some of the talks
• "Not only does a BSD conference have way too many very smart people in one room, but also some of the nicest." ***

DragonFly on the Chromebook C720

• If you've got one of the Chromebook laptops and weren't happy with the included OS, DragonFlyBSD might be worth a go
• This article is a "mini-report" on how DragonFly functions on the device as a desktop, and
• While the 2GB of RAM proved to be a bit limiting, most of the hardware is well-supported
• DragonFly's wiki has a full guide on getting set up on one of these devices as well ***

Interview - David Meyer - info@xinuos.com / @xinuos

Xinuos, BSD license model vs. others, community interaction

News Roundup

Introducing LiteBSD

• We definitely don't talk about 4.4BSD a lot on the show
• LiteBSD is "a variant of [the] 4.4BSD operating system adapted for microcontrollers"
• If you've got really, really old hardware (or are working in the embedded space) then this might be an interesting hobby project to look info ***

HardenedBSD announces ASLR completion

• HardenedBSD, now officially a full-on fork of FreeBSD, has declared their ASLR patchset to be complete
• The latest and last addition to the work was VDSO (Virtual Dynamic Shared Object) randomization, which is now configurable with a sysctl
• This post gives a summary of the six main features they've added since the beginning
• Only a few small things are left to do - man page cleanups, possibly shared object load order improvements ***

Unlock the reaper

• In the ongoing quest to make more of OpenBSD SMP-friendly, a new patch was posted that unlocks the reaper in the kernel
• When there's a zombie process causing a resource leak, it's the reaper's job to deallocate their resources (and yes we're still talking about computers, not horror movies)
• Initial testing has yielded positive results and no regressions
• They're looking for testers, so you can install a -current snapshot and get it automatically
• An updated version of the patch is coming soon too
• A hackathon is going on right now, so you can expect more SMP improvements in the near future ***

The importance of mentoring

• Adrian Chadd has a blog post up about mentoring new users, and it tells the story of how he originally got into FreeBSD
• He tells the story of, at age 11, meeting someone else who knew about making crystal sets that became his role model
• Eventually we get to his first FreeBSD 1.1 installation (which he temporarily abandoned for Linux, since it didn't have a color "ls" command) and how he started using the OS
• Nowadays, there's a formal mentoring system in FreeBSD
• While he talks about FreeBSD in the post, a lot of the concepts apply to all the BSDs (or even just life in general) ***

Feedback/Questions

• Sean writes in
• Herminio writes in
• Stuart writes in
• Richard writes in ***

This episode was brought to you by

Headlines

FreeBSD and OpenBSD in GSOC2014

• The Google Summer of Code is a way to encourage students to write code for open source projects and make some money
• Both FreeBSD and OpenBSD were accepted, and we'd love for anyone listening to check out their GSOC pages
• The FreeBSD wiki has a list of things that they'd be interested in someone helping out with
• OpenBSD's want list was also posted
• DragonflyBSD and NetBSD were sadly not accepted this year ***

Yes, you too can be an evil network overlord

• A new blog post about monitoring your network using only free tools
• OpenBSD is a great fit, and has all the stuff you need in the base system or via packages
• It talks about the pflow pseudo-interface, its capabilities and relation to NetFlow (also goes well with pf)
• There's also details about flowd and nfsen, more great tools to make network monitoring easy
• If you're listening, Peter... stop ignoring our emails and come on the show! We know you're watching! ***

BSDMag's February issue is out

• The theme is "configuring basic services on OpenBSD 5.4"
• There's also an interview with Peter Hansteen (oh hey...)
• Topics also include locking down SSH, a GIMP lesson, user/group management, and...
• Linux and Solaris articles? Why?? ***

Changes in bcrypt

• Not specific to any OS, but the OpenBSD team is updating their bcrypt implementation
• There is a bug in bcrypt when hashing long passwords - other OSes need to update theirs too! (FreeBSD already has)
• "The length is stored in an unsigned char type, which will overflow and wrap at 256. Although we consider the existence of affected hashes very rare, in order to differentiate hashes generated before and after the fix, we are introducing a new minor 'b'."
• As long as you upgrade your OpenBSD system in order (without skipping versions) you should be ok going forward
• Lots of specifics in the email, check the full thing ***

Interview - Will Backman - bitgeist@yahoo.com / @bsdtalk

The BSDTalk podcast, BSD advocacy, various topics

Tutorial

Tracking and cross-compiling -CURRENT (NetBSD)

News Roundup

X11 no longer needs root

• Xorg has long since required root privileges to run the main server
• With recent work from the OpenBSD team, now everything (even KMS) can run as a regular user
• Now you can set the "machdep.allowaperture" sysctl to 0 and still use a GUI ***

OpenSSH 6.6 CFT

• Shortly after the huge 6.5 release, we get a routine bugfix update
• Test it out on as many systems as you can
• Check the mailing list for the full bug list ***

Creating an OpenBSD USB drive

• Since OpenBSD doesn't distribute any official USB images, here are some instructions on how to do it
• Step by step guide on how you can make your very own
• However, there's some recent emails that suggest official USB images may be coming soon... oh wait ***

PCBSD weekly digest

• New PBI updates that allow separate ports from /usr/local
• You need to rebuild pbi-manager if you want to try it out
• Updates and changes to Life Preserver, App Cafe, PCDM ***

Feedback/Questions

• espressowar writes in
• Antonio writes in
• Christian writes in
• Adam writes in
• Alex writes in ***