Skip to main content.

Episode 090: ZFS Armistice

2015-05-20

Direct Download:

Video | HD Video | MP3 Audio | OGG Audio | Torrent

This episode was brought to you by

iXsystems - Enterprise Servers and Storage for Open SourceDigitalOcean - Simple Cloud Hosting, Built for DevelopersTarsnap - Online Backups for the Truly Paranoid


Headlines

Playing with sandboxing

  • Sandboxing and privilege separation are popular topics these days - they're the goal of the new "shill" scripting language, they're used heavily throughout OpenBSD, and they're gaining traction with the capsicum framework
  • This blog post explores capsicum in FreeBSD, some of its history and where it's used in the base system
  • They also include some code samples so you can verify that capsicum is actually denying the program access to certain system calls
  • Check our interview about capsicum from a while back if you haven't seen it already

OpenNTPD on by default

  • OpenBSD has enabled ntpd by default in the installer, rather than prompting the user if they want to turn it on
  • In nearly every case, you're going to want to have your clock synced via NTP
  • With the HTTPS constraints feature also enabled by default, this should keep the time checked and accurate, even against spoofing attacks
  • Lots of problems can be traced back to the time on one system or another being wrong, so this will also eliminate some of those cases
  • For those who might be curious, they're using the "pool.ntp.org" cluster of addresses and google for HTTPS constraints (but these can be easily changed)

FreeBSD workshop in Landshut

  • We mentioned a BSD installfest happening in Germany a few weeks back, and the organizer wrote in with a review of the event
  • The installfest instead became a "FreeBSD workshop" session, introducing curious new users to some of the flagship features of the OS
  • They covered when to use UFS or ZFS, firewall options, the release/stable/current branches and finally how to automate installations with Ansible
  • If you're in south Germany and want to give similar introduction talks or Q&A sessions about the other BSDs, get in touch
  • We'll hear more from him about how it went in the feedback section today

Swap encryption in DragonFly

  • Doing full disk encryption is very important, but something that people sometimes overlook is encrypting their swap
  • This can actually be more important than the contents of your disks, especially if an unencrypted password or key hits your swap (as it can be recovered quite easily)
  • DragonFlyBSD has added a new experimental option to automatically encrypt your swap partition in fstab
  • There was another way to do it previously, but this is a lot easier
  • You can achieve similar results in FreeBSD by adding ".eli" to the end of the swap device in fstab, there are a few steps to do it in NetBSD and swap in OpenBSD is encrypted by default
  • A one-time key will be created and then destroyed in each case, making recovery of the plaintext nearly impossible

Interview - Jed Reynolds - jed@bitratchet.com / @jed_reynolds

Comparing ZFS on Linux and FreeBSD


News Roundup

USB thermometer on OpenBSD

  • So maybe you've got BSD on your server or router, maybe NetBSD on a toaster, but have you ever used a thermometer with one?
  • This blog post introduces the RDing TEMPer Gold USB thermometer, a small device that can tell the room temperature, and how to get it working on OpenBSD
  • Wouldn't you know it, OpenBSD has a native "ugold" driver to support it with the sensors framework
  • How useful such a device would be is another story though

NAS4Free now on ARM

  • We talk a lot about hardware for network-attached storage devices on the show, but ARM doesn't come up a lot
  • That might be changing soon, as NAS4Free has just released some ARM builds
  • These new (somewhat experimental) images are based on FreeBSD 11-CURRENT
  • Included in the announcement is a list of fully-supported and partially-supported hardware that they've tested it with
  • If anyone has experience with running a NAS on slightly exotic hardware, write in to us

pkgsrcCon 2015 CFP and info

  • This year's pkgsrcCon will be in Berlin, Germany on July 4th and 5th
  • They're looking for talk proposals and ideas for things you'd like to see
  • If you or your company uses pkgsrc, or if you're just interested in NetBSD in general, it would be a good event to check out

BSDTalk episode 253

  • BSDTalk has released another new episode
  • In it, he interviews George Neville-Neil about the 2nd edition of "The Design and Implementation of the FreeBSD Operating System"
  • They discuss what's new since the last edition, who the book's target audience is and a lot more
  • We're up to 90 episodes now, slowly catching up to Will...

Feedback/Questions


  • Send questions, comments, show ideas/topics, or stories you want mentioned on the show to feedback@bsdnow.tv - if there's someone you want us to talk to on a future episode, you gotta tell us
  • Let us know if you guys have any ideas for our big 100th episode

Latest News

New announcement

2017-05-25

Hi, Mr. Dexter...

Two Year Anniversary

2015-08-08

We're quickly approaching our two-year anniversary, which will be on episode 105. To celebrate, we've created a unique t-shirt design, available for purchase until the end of August. Shirts will be shipped out around September 1st. Most of the proceeds will support the show, and specifically allow us to buy...

New discussion segment

2015-01-17

We're thinking about adding a new segment to the show where we discuss a topic that the listeners suggest. It's meant to be informative like a tutorial, but more of a "free discussion" format. If you have any subjects you want us to explore, or even just a good name...

How did you get into BSD?

2014-11-26

We've got a fun idea for the holidays this year: just like we ask during the interviews, we want to hear how all the viewers and listeners first got into BSD. Email us your story, either written or a video version, and we'll read and play some of them for...


Episode 210: Your questions, part I

2017-09-06

Direct Download:HD VideoMP3 AudioTorrent This episode was brought to you by Headlines A Reimplementation Of Netbsd Using a Microkernel Minix author Andy Tanenbaum writes in Part 1 of a-reimplementation-of-netbsd-using-a-microkernel Based on the MINIX 3 microkernel, we have constructed a system that to the user looks a great deal like NetBSD. It uses pkgsrc,...

Episode 209: Signals: gotta catch ‘em all

2017-08-30

Direct Download:HD VideoMP3 AudioTorrent This episode was brought to you by Headlines Trip Report: FreeBSD in China at COPU and LinuxCon This trip report is from Deb Goodkin, the Executive Director of the FreeBSD Foundation. She travelled to China in May 2017 to promote FreeBSD, meet with companies, and participate in discussions around Open...

Episode 208: Faces of Open Source

2017-08-23

Direct Download:HD VideoMP3 AudioTorrent This episode was brought to you by Headlines LLVM, Clang and compiler-rt support enhancements In the last month I started with upstream of the code for sanitizers: the common layer and ubsan. I worked also on the elimination of unexpected failures in LLVM and Clang. I've managed to...

Episode 207: Bridge over the river Cam

2017-08-16

Direct Download:HD VideoMP3 AudioTorrent This episode was brought to you by Headlines BSDCam recap The 2017 Cambridge DevSummit took place from 2-4 August 2017. The event took place over three days including a formal dinner at St John's College, and was attended by 55 registered developers and guests. Prior to the start of...