Allan Jude
@allanjude.com
Co-founder of @klarainc.bsky.social where I work on #OpenZFS and #FreeBSD. Co-host of https://2.5admins.com weekly podcast
Reposted by Allan Jude
Reposted by Allan Jude
cloudflare's on-duty IT staff bangs on the doors which I have padlocked from the inside as I calmly break open lava lamp after lava lamp and drink the contents
November 18, 2025 at 1:59 PM
cloudflare's on-duty IT staff bangs on the doors which I have padlocked from the inside as I calmly break open lava lamp after lava lamp and drink the contents
Reposted by Allan Jude
Klara’s is going to the OpenZFS Developer Summit and will be presenting!
- 10 AM – AnyRaid with Paul Dagnelie
- 1 PM-1:50 PM – Large Label & Blockpointer-V2 with Allan Jude
- 2:30 PM – QLC NAND: When the hardware needs help from the filesystem with Allan Jude
Learn More: https://bit.ly/3J7WbbH
- 10 AM – AnyRaid with Paul Dagnelie
- 1 PM-1:50 PM – Large Label & Blockpointer-V2 with Allan Jude
- 2:30 PM – QLC NAND: When the hardware needs help from the filesystem with Allan Jude
Learn More: https://bit.ly/3J7WbbH
October 20, 2025 at 4:06 PM
Klara’s is going to the OpenZFS Developer Summit and will be presenting!
- 10 AM – AnyRaid with Paul Dagnelie
- 1 PM-1:50 PM – Large Label & Blockpointer-V2 with Allan Jude
- 2:30 PM – QLC NAND: When the hardware needs help from the filesystem with Allan Jude
Learn More: https://bit.ly/3J7WbbH
- 10 AM – AnyRaid with Paul Dagnelie
- 1 PM-1:50 PM – Large Label & Blockpointer-V2 with Allan Jude
- 2:30 PM – QLC NAND: When the hardware needs help from the filesystem with Allan Jude
Learn More: https://bit.ly/3J7WbbH
Reposted by Allan Jude
Went apple picking today. You never know where you’ll find unpatched OpenSSL in the wild.
October 4, 2025 at 6:22 PM
Went apple picking today. You never know where you’ll find unpatched OpenSSL in the wild.
Reposted by Allan Jude
2.5 Admins 267: Hoarding Cache
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.
2.5admins.com/2-5-admins-2...
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.
2.5admins.com/2-5-admins-2...
October 2, 2025 at 9:47 PM
2.5 Admins 267: Hoarding Cache
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.
2.5admins.com/2-5-admins-2...
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.
2.5admins.com/2-5-admins-2...
A few weeks ago I got to hang out with @lawrencesystems.com in person for a couple of days. Many great chats inspired a YouTube video where we talked more about the future of ZFS and NVMe: youtu.be/BjOkWTeZJDk?...
Check it out
Check it out
Is ZFS Ready for NVMe Speed? Allan Jude Explains
YouTube video by Lawrence Systems
youtu.be
September 26, 2025 at 3:45 PM
A few weeks ago I got to hang out with @lawrencesystems.com in person for a couple of days. Many great chats inspired a YouTube video where we talked more about the future of ZFS and NVMe: youtu.be/BjOkWTeZJDk?...
Check it out
Check it out
Reposted by Allan Jude
I have friends that believe you should do everything possible via the command line
You know, CLImaxing
You know, CLImaxing
September 21, 2025 at 1:50 AM
I have friends that believe you should do everything possible via the command line
You know, CLImaxing
You know, CLImaxing
Reposted by Allan Jude
And this is why the emergency shutdown system acts automatically without user input and cannot be disabled.
My latest cartoon for @newscientist.com
p.s. this week I am on a USA/Canada tour with my new book. Details and preorder links at tomgauld.com
p.s. this week I am on a USA/Canada tour with my new book. Details and preorder links at tomgauld.com
September 15, 2025 at 6:05 PM
And this is why the emergency shutdown system acts automatically without user input and cannot be disabled.
Reposted by Allan Jude
my mom to my kid: have you ever actually dialed a phone?
my kid: yeah! I did it in a museum 💀
my kid: yeah! I did it in a museum 💀
August 29, 2025 at 8:47 PM
my mom to my kid: have you ever actually dialed a phone?
my kid: yeah! I did it in a museum 💀
my kid: yeah! I did it in a museum 💀
Reposted by Allan Jude
Leverage OpenZFS for your Infrastructure storage. Our latest white paper explores how scalable, high-performance storage solutions can optimize your IT infrastructure. Gain insights, case studies & best practices.
Download our whitepaper: klarasystems.com/content/open...
Download our whitepaper: klarasystems.com/content/open...
White Paper: Leverage OpenZFS for Infrastructure Storage
Learn how OpenZFS infrastructure storage enhances data integrity, performance, and flexibility for modern IT environments in this white paper.
bit.ly
July 1, 2025 at 7:40 PM
Leverage OpenZFS for your Infrastructure storage. Our latest white paper explores how scalable, high-performance storage solutions can optimize your IT infrastructure. Gain insights, case studies & best practices.
Download our whitepaper: klarasystems.com/content/open...
Download our whitepaper: klarasystems.com/content/open...
Reposted by Allan Jude
Don't let bugs in OpenZFS slow you down. Klara’s ZFS experts help you investigate, patch, and protect your infrastructure.
Start today: klarasystems.com/zfs/solution...
Start today: klarasystems.com/zfs/solution...
ZFS Bug Investigation - Klara Systems
Resolve critical OpenZFS issues with Klara’s bug investigation and patching. Expertly debug and adapt software to ensure security and stability.
klarasystems.com
June 26, 2025 at 8:22 PM
Don't let bugs in OpenZFS slow you down. Klara’s ZFS experts help you investigate, patch, and protect your infrastructure.
Start today: klarasystems.com/zfs/solution...
Start today: klarasystems.com/zfs/solution...
Reposted by Allan Jude
When you're addicted to only fans
June 24, 2025 at 11:53 AM
When you're addicted to only fans
Reposted by Allan Jude
RAID is not a backup, it protects availability and uptime, not your data.
Pair RAID with a full disaster recovery plan to ensure both the availability and resiliency of your data.
Good backups start with one simple question:
What are you protecting your data from?
Pair RAID with a full disaster recovery plan to ensure both the availability and resiliency of your data.
Good backups start with one simple question:
What are you protecting your data from?
June 17, 2025 at 6:40 PM
RAID is not a backup, it protects availability and uptime, not your data.
Pair RAID with a full disaster recovery plan to ensure both the availability and resiliency of your data.
Good backups start with one simple question:
What are you protecting your data from?
Pair RAID with a full disaster recovery plan to ensure both the availability and resiliency of your data.
Good backups start with one simple question:
What are you protecting your data from?
Reposted by Allan Jude
Remember to join us and learn about how ZFS Fast Dedup makes for smarter storage for modern container workloads. Join now: bit.ly/4mM9r4H
Fast Dedup with ZFS: Smarter Storage for Modern Workloads - Klara Systems
Learn how Fast Dedup with ZFS improves storage efficiency. Join experts from TrueNAS and Klara Inc. to explore real-world use cases.
bit.ly
June 18, 2025 at 4:06 PM
Remember to join us and learn about how ZFS Fast Dedup makes for smarter storage for modern container workloads. Join now: bit.ly/4mM9r4H
Reposted by Allan Jude
Join TrueNAS & Klara to learn how Fast Dedup in OpenZFS makes storage smarter and more efficient. Save your spot: bit.ly/4mM9r4H
Fast Dedup with ZFS: Smarter Storage for Modern Workloads - Klara Systems
Learn how Fast Dedup with ZFS improves storage efficiency. Join experts from TrueNAS and Klara Inc. to explore real-world use cases.
bit.ly
June 17, 2025 at 8:34 PM
Join TrueNAS & Klara to learn how Fast Dedup in OpenZFS makes storage smarter and more efficient. Save your spot: bit.ly/4mM9r4H
Reposted by Allan Jude
With ZFS, encryption happens at the dataset level—so you can manage, scrub, or repair your pool without unlocking all your data. Smarter, safer workflows.
Partner with Klara: bit.ly/4dSNhtJ
Partner with Klara: bit.ly/4dSNhtJ
June 5, 2025 at 9:36 PM
With ZFS, encryption happens at the dataset level—so you can manage, scrub, or repair your pool without unlocking all your data. Smarter, safer workflows.
Partner with Klara: bit.ly/4dSNhtJ
Partner with Klara: bit.ly/4dSNhtJ
We've been telling people for decades that ZFS Dedup isn't good. Now we've fixed it, Fast Dedup makes many workloads able to take advantage of this core ZFS feature.
Come learn more about deploying Fast Dedup for modern workloads.
Come learn more about deploying Fast Dedup for modern workloads.
Take advantage of efficient and scalable deduplication with Fast Dedup in OpenZFS. Learn how it improves storage efficiency for containers, VMs & CI/CD. Join the webinar with experts from TrueNAS & Klara Inc.
Register now: klarasystems.com/webinars/fas...
Register now: klarasystems.com/webinars/fas...
Fast Dedup with ZFS: Smarter Storage for Modern Workloads - Klara Systems
Learn how Fast Dedup with ZFS improves storage efficiency. Join experts from TrueNAS and Klara Inc. to explore real-world use cases.
klarasystems.com
June 5, 2025 at 11:40 PM
We've been telling people for decades that ZFS Dedup isn't good. Now we've fixed it, Fast Dedup makes many workloads able to take advantage of this core ZFS feature.
Come learn more about deploying Fast Dedup for modern workloads.
Come learn more about deploying Fast Dedup for modern workloads.
Reposted by Allan Jude
In our latest webinar, we shared how Klara enhanced a customers FreeBSD-based system by limiting debugger access, protecting sensitive memory, like VPN keys, without losing the ability to debug in production.
Next up: Fast Dedup with ZFS >> bit.ly/4mM9r4H
Next up: Fast Dedup with ZFS >> bit.ly/4mM9r4H
June 4, 2025 at 10:59 PM
In our latest webinar, we shared how Klara enhanced a customers FreeBSD-based system by limiting debugger access, protecting sensitive memory, like VPN keys, without losing the ability to debug in production.
Next up: Fast Dedup with ZFS >> bit.ly/4mM9r4H
Next up: Fast Dedup with ZFS >> bit.ly/4mM9r4H
Reposted by Allan Jude
As we gear up for BSDCan 2025, we look back at last years talk by @allanjude.com on supporting FreeBSD in the field—full of real-world stories and lessons.
We look forward to seeing you at BSDCan on June 11!
Watch here: bit.ly/3Zab3v6
We look forward to seeing you at BSDCan on June 11!
Watch here: bit.ly/3Zab3v6
Supporting FreeBSD in the Field By: Allan Jude
Allan from Klara Systems shares a series of stories from supporting users deploying FreeBSD in the field across various industries. These stories come from the silent users of FreeBSD, those that the community often do not know or hear about. Be that because they happen in the quieter corners of industry, where it is not common to discuss the technical challenges you face or how you overcame them, or just from people who are not well connected to the community, or choose not to make waves. These stories provide insight into how FreeBSD gets used beyond the stories we already know, how it is used in industries that never mention what OS they use, or where you might never expect to find FreeBSD. Sharing these stories can help the community ensure these users continue to get the most out of FreeBSD.
bit.ly
June 3, 2025 at 7:27 PM
As we gear up for BSDCan 2025, we look back at last years talk by @allanjude.com on supporting FreeBSD in the field—full of real-world stories and lessons.
We look forward to seeing you at BSDCan on June 11!
Watch here: bit.ly/3Zab3v6
We look forward to seeing you at BSDCan on June 11!
Watch here: bit.ly/3Zab3v6
Reposted by Allan Jude
Explore OpenZFS snapshots & backups—best practices & use cases. Learn more: klarasystems.com/articles/ope...
ZFS Backup Best Practices and Use Cases – OpenZFS Snapshots
Explore ZFS backup best practices and storage optimization. Learn how to configure OpenZFS snapshots for reliability and efficiency.
klarasystems.com
June 2, 2025 at 5:04 PM
Explore OpenZFS snapshots & backups—best practices & use cases. Learn more: klarasystems.com/articles/ope...
Reposted by Allan Jude
Sorry, I accidentally some words here. I found an integer overflow in a terminal emulator written in Rust.
I've found four bugs in three terminal emulators this weekend, lol.
I love target rich environments.
(none of the bugs are security-relvant, don't worry)
One of them, though, is an integer overflow in a terminal emulator written, which, lol, lmao, rofl.
I love target rich environments.
(none of the bugs are security-relvant, don't worry)
One of them, though, is an integer overflow in a terminal emulator written, which, lol, lmao, rofl.
May 25, 2025 at 10:21 AM
Sorry, I accidentally some words here. I found an integer overflow in a terminal emulator written in Rust.
Reposted by Allan Jude
chat is this for real? 🫣 sadly it is www.reddit.com/r/ableton/co... i hope you learned lessons and not trusting it blindly
May 23, 2025 at 1:08 AM
chat is this for real? 🫣 sadly it is www.reddit.com/r/ableton/co... i hope you learned lessons and not trusting it blindly
"In defense of my loud keyboard"
Torvalds' typing taste test touches tactile tragedy
Torvalds' typing taste test touches tactile tragedy
There’s something wrong with keyboard design, but we can’t put our finger on it
Opinion Linus Torvalds is the global hero most of the world doesn't even know exists. There are no big movies about him, no best-selling biographies, no ardent Torvaldian cultists with home altars and gilded icons. At least, we hope not.…
dlvr.it
May 20, 2025 at 11:02 PM
"In defense of my loud keyboard"
Reposted by Allan Jude
ZFS just got smarter at spreading writes across your disks. The new Unified Allocation Throttling (PR17020) fixes major flaws in how space was balanced across vdevs—meaning less fragmentation, better performance, and more efficient use of your storage.
Big news if you’re running ZFS at scale!
Big news if you’re running ZFS at scale!
May 20, 2025 at 9:45 PM
ZFS just got smarter at spreading writes across your disks. The new Unified Allocation Throttling (PR17020) fixes major flaws in how space was balanced across vdevs—meaning less fragmentation, better performance, and more efficient use of your storage.
Big news if you’re running ZFS at scale!
Big news if you’re running ZFS at scale!