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2.5 Admins
2.5 Admins
Author: The Late Night Linux Family
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Description
2.5 Admins is a podcast featuring two sysadmins called Allan Jude and Jim Salter, and a producer/editor who can just about configure a Samba share called Joe Ressington. Every week we get together, talk about recent tech news, and answer some of your admin-related questions.
278 Episodes
Reverse
The Crucial brand of consumer SSDs and RAM is going away, AMD and Intel memory encryption can be bypassed with cheap hardware, more AI buffoonery, and monitoring users’ usage on a network.
Plugs
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When RAID Isn’t Enough: ZFS Redundancy Done Right
News/discussion
Micron Announces Exit from Crucial Consumer Business
Cheap Hardware Module Bypasses AMD, Intel Memory Encryption
Google’s vibe coding platform deletes entire drive
One day, AI might be better than you at surfing the web. That day isn’t today
Free consulting
We were asked about monitoring users’ usage on a network.
Tailscale
Tailscale is an easy to deploy, zero-config, no-fuss VPN that allows you to build simple networks across complex infrastructure. Go to tailscale.com/25a and try Tailscale out for free for up to 100 devices and 3 users, with no credit card required. Use code LATENIGHTLINUX for three free months of any Tailscale paid plan.
See our contact page for ways to get in touch.
What a government crackdown on VPNs would look like, malware groups play the long game with browser extensions, a new major version of FreeBSD is released, and using a single database vs one DB per application or VM.
Plugs
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ZFS Enabled Disaster Recovery for Virtualization
News/discussion
The VPN panic is only getting started
Stealthy browser extensions waited years before infecting 4.3M Chrome, Edge users with backdoors and spyware
FreeBSD 15.0-RELEASE Announcement
Free consulting
We were asked about using a single database vs one DB per application or VM.
See our contact page for ways to get in touch.
Google kept collecting sensor data even after bricking Nest thermostats, FreeBSD’s container support gets serious, and where to find cheap (or even dirt cheap) used hardware.
Plugs
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How to Set Up a Highly Available ZFS Pool Using Mirroring and iSCSI
December Webinar: The 12 Days of ZFS: Tips, Tricks, and Treats
News/discussion
Google is collecting troves of data from downgraded Nest thermostats
FreeBSD Officially Supported in OCI Runtime Specification v1.3
Free consulting
We were asked about where to find cheap (or even dirt cheap) used hardware.
Tailscale
Tailscale is an easy to deploy, zero-config, no-fuss VPN that allows you to build simple networks across complex infrastructure. Go to tailscale.com/25a and try Tailscale out for free for up to 100 devices and 3 users, with no credit card required. Use code LATENIGHTLINUX for three free months of any Tailscale paid plan.
See our contact page for ways to get in touch.
Windows is becoming an “agentic OS”, some WD SMR drives are dying prematurely, backing up VMware with ZFS, and separating trusted and non-trusted devices on your network.
Plugs
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Understanding Storage Performance Metrics
December Webinar: The 12 Days of ZFS: Tips, Tricks, and Treats
News/discussion
Microsoft is turning Windows into an ‘agentic OS,’ starting with the taskbar
Critics scoff after Microsoft warns AI feature can infect machines and pilfer data
WD launches investigation into problems with its controversial SMR hard drives
Free consulting
We were asked about backing up VMware with ZFS, and separating trusted and non-trusted devices on your network.
See our contact page for ways to get in touch.
Allan tells us about the recent OpenZFS Summit including inconsistent JBODs, more details about mixed disk sizes in ZFS with AnyRaid, an upcoming standard that allows you to keep using partially dead hard drives, Seagate’s roadmap for 50 and 100 TB drives, and NVMe connected mechanical drives. Plus using a separate mini PC for work.
Plugs
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Building Enterprise-Grade Storage on Proxmox with ZFS
December Webinar: The 12 Days of ZFS: Tips, Tricks, and Treats
Free consulting
We were asked about using a separate mini PC for work.
See our contact page for ways to get in touch.
Why you should seriously consider buying refurbished hard drives, why drives might be lasting longer than they once did, Jim’s M.2 NVMe drive died at an inopportune moment, using multiple partitions on disks with ZFS.
Plugs
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Advanced ZFS Dataset Management: Snapshots, Clones, and Bookmarks
November Webinar: ZFS Mastery: The Bits They Don’t Put in the Man Pages
News/discussion
Do Refurbished Hard Disks Make Sense For Your Home NAS Server?
Are Hard Drives Getting Better? Let’s Revisit the Bathtub Curve
Jim’s M.2 NVMe nightmare
Free consulting
We were asked about using multiple partitions on disks with ZFS.
See our contact page for ways to get in touch.
Why you should keep your Baseboard Management Controller off the network, ZFS is hard to defeat with a zip bomb, how bad the Internet bot problem probably is, and building a small home server cluster.
Plug
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Discussion
Supermicro server motherboards can be infected with unremovable malware
When a decompression ZIP bomb meets ZFS: 19 PB written on a 15 TB disk
Free consulting
We were asked about building a small home server cluster.
See our contact page for ways to get in touch.
It looks like the storage companies aren’t betting on the AI bubble lasting much longer, the arguments against self-hosting, and setting up a server for virtualization and containers.
Plugs
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ZFS Performance Tuning in the Real World: ARC, L2ARC, and SLOG
Discussion
Expect HDD, SSD shortages as AI rewrites the rules of storage hierarchy — multiple companies announce price hikes, too
The Future is NOT Self-Hosted
Free consulting
We were asked about setting up a server for virtualization and containers.
See our contact page for ways to get in touch.
Windows 10 is officially end of life but Microsoft extends free updates for Windows 10 in Europe, it gets even harder to use a local account in Windows 11, and whether repurposing old server hardware is worth it.
Plugs
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What the Future Brings – ZFS Features, Roadmap, and Innovations
News/discussion
Major backtrack as Microsoft makes Windows 10 extended security updates FREE for an extra year — but only in certain markets
Microsoft is plugging more holes that let you use Windows 11 without an online account
Free consulting
We were asked about repurposing old server hardware.
See our contact page for ways to get in touch.
A Red Hat breach leads to a leak of lots of sensitive customer data, Synology backs down on allowing third-party drives but they are removing features, and managing ZFS properties during replication.
Plugs
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Optimizing ZFS for High-Throughput Storage Workloads
News
Red Hat fesses up to GitLab breach after attackers brag of data theft
Red Hat breach escalates as Crimson Collective recruits help
International Cyber Digest Twitter thread
Synology caves, walks back some drive restrictions on upcoming NAS models
Synology Removes Graphics Drivers and HEVC & H.264 HW Transcoding Support
Discontinuation Notice for HEVC (H.265), AVC (H.264), and VC-1 Transcoding on DSM and BeeStation OS Platforms
Free consulting
We were asked about managing ZFS properties during replication.
See our contact page for ways to get in touch.
The weird errors you see when your root partition is full, TikTok uses a lot of bandwidth by preloading videos, and dealing with a ZFS pool that won’t import.
Plugs
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Keeping Data Safe with OpenZFS: Security, Encryption, and Delegation
News/discussion
Dark patterns killed my wife’s Windows 11 installation
TikTok video pre-loads cause ‘massive data wastage’
Free consulting
We were asked about dealing with a ZFS pool that won’t import.
Importing corrupted pool causes PANIC
Klara added additional diagnostics to ZFS to help investigate this issue, that shipped as part of 2.3.4
Klara also has a work-around to get past the errors, but it is likely to result in data loss if there are overlapping segments, or the leaking of free space when segments are not entirely removed (not to be attempted without a developer present)
See our contact page for ways to get in touch.
Intel and Nvidia are teaming up for multiple reasons, Open AI are planning to build data centers and use a ludicrous amount of power, LLM hallucinations aren’t going away, and how long we keep servers and hard drives in production.
Plugs
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Troubleshooting ZFS – Common Issues and How to Fix Them
News
Nvidia, Intel to co-develop “multiple generations” of chips as part of $5 billion deal
Nvidia and Intel’s $5 billion deal is apparently about eating AMD’s lunch
OpenAI and Nvidia’s $100B AI plan will require power equal to 10 nuclear reactors
Nvidia adds more air to the AI bubble with vague $100B OpenAI deal
The AI-energy apocalypse might be a little overblown
OpenAI’s Stargate project to pave the world with AI datacenters announces five new US locations
OpenAI admits AI hallucinations are mathematically inevitable, not just engineering flaws
Free consulting
We were asked about how long we keep servers and hard drives in production.
See our contact page for ways to get in touch.
Joe set up a FreeBSD box to serve as a replication target and it was surprisingly straightforward, if rather different from Linux. Plus the lies that storage tells us.
Plug
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See our contact page for ways to get in touch.
Matrix shows how painful enormous databases can be to restore, why the certificate authority system doesn’t seem to make sense in 2025, a hosting provider thinks they are better than Cloudflare at blocking malicious traffic, a viral app turns out to be written by an enthusiastic dev who doesn’t understand best practices, and using S3 object storage outside of the cloud. With guest host Gary from Linux After Dark and Hybrid Cloud Show.
Plug
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News/discussion
Matrix.org homeserver grinds to a halt after RAID meltdown
Mis-issued certificates for 1.1.1.1 DNS service pose a threat to the Internet
The number of mis-issued 1.1.1.1 certificates grows
Mythic Beasts will block Cloudflare IPs on shared hosting if abusive traffic gets through
Unfortunately, the ICEBlock app is activism theater
ICEBlock handled my vulnerability report in the worst possible way
Free consulting
We were asked about using S3 object storage outside of the cloud.
MinIO
See our contact page for ways to get in touch.
McDonald’s IT systems seem to be riddled with 90s-style coding errors, we finally know where the fraudulent hard drives came from, when IT workers go rogue, and ZFS on root without using FreeBSD or Ubuntu.
Plug
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News/discussion
How I Hacked McDonald’s
Seagate Uncovers Global Scheme That Sold 1 Million Used Drives as New
# smartctl -l farm /dev/sdx
Developer gets 4 years for activating network “kill switch” to avenge his firing
Woman gets 8 years for aiding North Koreans infiltrate 300 US firms
Free consulting
We were asked about ZFS on root without using FreeBSD or Ubuntu.
Introduction to ZFSBootMenu
See our contact page for ways to get in touch.
Google is planning to assert even more control over which Android apps can be installed, the US government takes a 10% stake in Intel, and minimum networking speeds in homes and offices.
Plugs
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ZFS Basecamp Launch: A Panel with the People Behind ZFS
News/discussion
A new layer of security for certified Android devices
US government takes 10 percent stake in Intel in exchange for money it was already on the hook for
Free consulting
We were asked about minimum networking speeds in homes and offices.
See our contact page for ways to get in touch.
Why you can’t rely on a single cloud provider, Jim discovers AI that spreads itself like a worm, and configuring all-flash arrays.
Plugs
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FreeBSD Summer Roundup: Guide to Lock-In Free Infrastructure
News/discussion
AWS deleted my 10-year account and all data without warning
AWS Restored My Account: The Human Who Made the Difference
Jim’s AI nightmare
Free consulting
We were asked about configuring all-flash arrays.
See our contact page for ways to get in touch.
AMD’s recent mobile-class processors impress us with their power to performance ratio, the UK government suggests a preposterous way to save water, setting up verified boot with snapshots, and the best way to configure ZFS to run VMs.
Plugs
Support us on patreon and get an ad-free RSS feed with early episodes sometimes
ZFS Summer Roundup: Smart Hardware Advice
News
AMD Ryzen AI Max+ 395 vs. Ryzen 9 9950X vs. Ryzen 9 9950X3D Linux Performance Review
UK Government says delete old emails to save water
UK government to invest over £2 billion in the UK’s AI ecosystem
Free consulting
We were asked about setting up verified boot with snapshots, and the best way to configure ZFS to run VMs.
See our contact page for ways to get in touch.
The Web is a mess of tracking and AI scraping so do we need a new one, would it even be possible, or is this the wrong question? Plus setting up servers in a garage where dusty woodworking is happening.
Plug
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Free consulting
We were asked about setting up servers in a garage where dusty woodworking is happening.
See our contact page for ways to get in touch.
Jim is concerned that although over-anthropomorphising LLMs is a mistake, we should be cautious about some of their human-like behaviour. Plus how to maintain old ZFS pools, and accessibility in the BSDs.
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Discussion
It’s a mistake to over anthropomorphize LLMs, but it’s equally a mistake to *under* anthropomorphize them
Grok will no longer call itself Hitler or base its opinions on Elon Musk’s, promises xAI
Free consulting
We were asked about how to maintain old ZFS pools, and accessibility in the BSDs.
See our contact page for ways to get in touch.




pv by default uses a transfer buffer size, not 'block size'. It defaults to the block size of the input file's filesystem multiplied by 32 (512kb max) or 400 if the block size cannot be determined. Another great episode. Thanks guys.