TechSNAP Jupiter Broadcasting

It's a storage showdown as Jim and Wes bust some performance myths about RAID and ZFS.


Plus our favorite features from Fedora 32, and why Wes loves DNF.
Links:
What's new in Fedora 32 Workstation
Fedora 32 ChangeSet
Linux distro review: Fedora Workstation 32
TechSNAP 428: RAID Reality Check
ZFS versus RAID: Eight Ironwolf disks, two filesystems, one winner
Understanding RAID: How performance scales from one disk to eight
Find Jim on 2.5 AdminsFind Wes on LINUX UnpluggedTechSNAP 1: First episode of TechSNAP (in 2011!)
TechSNAP 300: End of the Allan and Chris era (2017)
TechSNAP 301: Enter Dan and Wes
TechSNAP 347: A Farewell to Dan
TechSNAP 348: Chris is back!
TechSNAP 389: Jim's first time as a guest
TechSNAP 390: Jim's second guest appearance
TechSNAP 393: Chris says goodbye
TechSNAP 395: Jim joins the show

Jim and Wes take the latest release of the Caddy web server for a spin, investigate Intel's Comet Lake desktop CPUs, and explore the fight over 5G between the US Military and the FCC.
Links:
Caddy offers TLS, HTTPS, and more in one dependency-free Go Web server
Caddy 2
Caddy v2 Improvements [slightly out of date]Proposal: Permanently change all proprietary licensing to open source · Issue #2786 · caddyserver/caddy
Revert "Implement Caddy-Sponsors HTTP response header" by lol768 · Pull Request #1866 · caddyserver/caddy
Intel’s 10th generation desktop CPUs have arrived—still on 14nm
Intel Comet Lake 10th Gen CPU release date, specs, price, and performance
10th Gen Intel® Core™ Desktop Processors
US military is furious at FCC over 5G plan that could interfere with GPS
The Pentagon's fight to kill Ligado's 5G network
FCC Approves Ligado L-Band Application to Facilitate 5G & IoT

We dive deep into the world of RAID, and discuss how to choose the right topology to optimize performance and resilience.


Plus Cloudflare steps up its campaign to secure BGP, and why you might want to trade in cron for systemd timers.
Links:
AMD Claims World’s Fastest Per-Core Performance with New EPYC Rome 7Fx2 CPUs
AMD EPYC 7F52 Linux Performance - AMD 7FX2 CPUs Further Increasing The Fight Against Intel Xeon Review
Understanding RAID: How performance scales from one disk to eight
New Cloudflare tool can tell you if your ISP has deployed BGP fixes
Is BGP safe yet?
RPKI - The required cryptographic upgrade to BGP routing
Why I Prefer systemd Timers Over Cron – Thomas Stringer
systemd/Timers - ArchWiki
systemd.time (Time format docs)
systemd.timer (Unit docs)

Jim finally gets his hands on an AMD Ryzen 9 laptop, some great news about Wi-Fi 6e, and our take on FreeBSD on the desktop.


Plus Intel's surprisingly overclockable laptop CPU, why you shouldn't freak out about 5G, and the incredible creativity of the Demoscene.
Links:
Asus ROG Zephyrus G14—Ryzen 7nm mobile is here, and it’s awesomeLinux on Laptops: ASUS Zephyrus G14 with Ryzen 9 4900HSIntel’s 10th-generation H-series laptop CPUs break 5GHz | Ars TechnicaWi-Fi 6E becomes official—the FCC will vote on rules this monthCelebs share rumors linking 5G to coronavirus, nutjobs burn cell towersNot-actually Linux distro review: FreeBSD 12.1-RELEASENot actually Linux distro review deux: GhostBSDMOD (file format) - WikipediaAT&T.MOD (YouTube)DJ Moses Rising—Ice Cream Trance (YouTube)Farbrausch—The Product (64K Intro, 2000)Farbrausch—Poem to a Horse (64K Intro, 2002)Finland accepts the Demoscene on its national UNESCO list of intangible cultural heritage of humanity

We take a look at Cloudflare's impressive Linux disk encryption speed-ups, and explore how zoned storage tools like dm-zoned and zonefs might help mitigate the downsides of Shingled Magnetic Recording.


Plus we celebrate WireGuard's inclusion in the Linux 5.6 kernel, and fight some exFAT FUD.
Links:
WireGuard VPN makes it to 1.0.0—and into the next Linux kernel — It's a good day for WireGuard users—DKMS builds will soon be behind us.
Linux 5.6 Is The Most Exciting Kernel In Years With So Many New Featuresfs: New zonefs file system — zonefs is a very simple file system exposing each zone of a zoned block device as a file. This is intended to simplify implementation of application zoned block device raw access support by allowing switching to the well known POSIX file API rather than relying on direct block device file ioctls and read/write.Ama-ZNS! Zonefs File-System Will Land with Linux® 5.6What is Zoned Storage and the Zoned Storage Initiative? — Zoned Storage is a new paradigm in storage motivated by the incredible explosion of data. Our data-driven society is increasingly dependent on data for every-day life and extreme scale data management is becoming a necessity. Linux Kernel Support - ZonedStorage.iodm-zoned — The dm-zoned device mapper target exposes a zoned block device as a regular block device.Device Mapper - ZonedStorage.io What are PMR and SMR hard disk drives?Beware of SMR drives in PMR clothing — WD and Seagate are both submarining Drive-managed SMR (DM-SMR) drives into channels, disguised as "normal" drives.Beware of SMR drives in PMR clothing [Reddit]The exFAT filesystem is coming to Linux—Paragon software’s not happy about it — When software and operating system giant Microsoft announced its support for inclusion of the exFAT filesystem directly into the Linux kernel back in August, it didn't get a ton of press coverage. But filesystem vendor Paragon Software clearly noticed this month's merge of the Microsoft-approved, largely Samsung-authored version of exFAT into the VFS for-next repository, which will in turn merge into Linux 5.7—and Paragon doesn't seem happy about it.The New Microsoft exFAT File-System Driver Is Set To Land With Linux 5.7Speeding up Linux disk encryption - The Cloudflare Blog — Encrypting data at rest is vital for Cloudflare with more than 200 data centres across the world. In this post, we will investigate the performance of disk encryption on Linux and explain how we made it at least two times faster for ourselves and our customers.Add inline dm-crypt patch and xtsproxy Crypto API patch

We take a look at AMD's upcoming line of Ryzen 4000 mobile CPUs, and share our first impressions of Ubuntu 20.04's approach to ZFS on root.


Plus Let's Encrypt's certificate validation mix-up, Intel's questionable new power supply design, and more.
Links:
Let's Encrypt changes course on certificate revocation
Revoking certain certificates on March 4
Let's Encrypt: Incomplete revocation for CAA rechecking bugPass authzModel by value, not reference
The Complete Guide to CAA RecordsDNS Certification Authority Authorization
AMD's 7nm Ryzen 4000 laptop processors are finally here
How Intel is changing the future of power supplies with its ATX12VO spec
Single Rail Power Supply ATX12VO Design GuideFreeNAS and TrueNAS are UnifyingFreeNAS and TrueNAS are Unifying [Video Announcement]
Ubuntu 20.04's zsys adds ZFS snapshots to package management
ubuntu/zsys: zsys daemon and client for zfs systems