oshogbo//vx
@oshogbo.bsky.social
🔨 Building things 😈 #FreeBSD developer 🌶 #security engineer 💾 #storage engineer WEB: https://oshogbo.com
Suricata, Jumbo Frames, and Netmap - let's see what can go wrong this time. oshogbo.com/blog/93/
Suricata, Jumbo Frames, and netmap
One of my FreeBSD machines sits between the Internet and the rest of my network. I wanted Suricata to monitor traffic arriving on four of the machine's interfaces and complain when something looks wro...
oshogbo.com
Suricata, Jumbo Frames, and Netmap - let's see what can go wrong this time. oshogbo.com/blog/93/
Suricata, Jumbo Frames, and netmap
One of my FreeBSD machines sits between the Internet and the rest of my network. I wanted Suricata to monitor traffic arriving on four of the machine's interfaces and complain when something looks wro...
oshogbo.com
I chased a memory leak in bsnmpd with #DTrace on #FreeBSD. Care to join? oshogbo.com/blog/92/
Hunting Memory Leaks in bsnmpd with DTrace
One of my FreeBSD boxes runs `bsnmpd`, the base system SNMP daemon. The machine is on 15.0-p2, and the daemon kept growing until the kernel ran out of patience and OOM-killed it. That is not a good fe...
oshogbo.com
I chased a memory leak in bsnmpd with #DTrace on #FreeBSD. Care to join? oshogbo.com/blog/92/
Hunting Memory Leaks in bsnmpd with DTrace
One of my FreeBSD boxes runs `bsnmpd`, the base system SNMP daemon. The machine is on 15.0-p2, and the daemon kept growing until the kernel ran out of patience and OOM-killed it. That is not a good fe...
oshogbo.com
Building a CI/CD with #Poudriere? Great idea. But what if your port has to rebuild main on every build, with no distfile checks getting in the way? #FreeBSD ports really do not want you to do this. Here is how I made it work anyway: oshogbo.com/blog/91/
How to Fetch a Moving Target with Poudriere
The FreeBSD ports framework has a simple idea about the world: a distfile never changes. It has a fixed size and a fixed checksum, written once into `distinfo` and verified every time after that. It i...
oshogbo.com
Building a CI/CD with #Poudriere? Great idea. But what if your port has to rebuild main on every build, with no distfile checks getting in the way? #FreeBSD ports really do not want you to do this. Here is how I made it work anyway: oshogbo.com/blog/91/
How to Fetch a Moving Target with Poudriere
The FreeBSD ports framework has a simple idea about the world: a distfile never changes. It has a fixed size and a fixed checksum, written once into `distinfo` and verified every time after that. It i...
oshogbo.com
I spent a whole blog post doing #ZFS on-disk math by hand - just to corrupt one byte and watch #OpenZFS healing process. Interested? Feel free to join the journey into the on-disk jungle. oshogbo.com/blog/90/ #storage #FreeBSD #Linux #Storage #Filesystem
Corrupting a ZFS File on Purpose
Most of the time, the whole point of ZFS is that your data does not get corrupted. But during development you sometimes need the opposite: a controlled, reproducible corruption, so you can watch self-...
oshogbo.com
As FreeBSD PKGBASE moves faster then its documentation - some light on these: - *.pkgnew - *.pkgsave - .pkgtemp.* #freebsd #PKGBASE vermaden.wordpress.com/2026/05/10/f...
FreeBSD PKGBASE Minor Upgrades
The PKGBASE way of things on FreeBSD is still not fully mature (and officially marked as experimental). I tried to cover all PKGBASE things in the Brave New PKGBASE World article but I need to add …
vermaden.wordpress.com
I spent a whole blog post doing #ZFS on-disk math by hand - just to corrupt one byte and watch #OpenZFS healing process. Interested? Feel free to join the journey into the on-disk jungle. oshogbo.com/blog/90/ #storage #FreeBSD #Linux #Storage #Filesystem
Corrupting a ZFS File on Purpose
Most of the time, the whole point of ZFS is that your data does not get corrupted. But during development you sometimes need the opposite: a controlled, reproducible corruption, so you can watch self-...
oshogbo.com
My 88th blog post, a number considered lucky in many parts of Asia, was featured in the latest #BSDNow episode. The twist? It was covered in episode 666. 😈 Coincidence? 🤔 www.bsdnow.tv/666
Everyone gets an LPE
fatgid, why zfs is ideal for media production, the CTF scene is dead, private repo behind TLS, and more...
bsdnow.tv
One ZAP entry. One uint64_t in spa_t. One new CLI flag. That's all it took to teach #OpenZFS to skip blocks the last scrub already verified. `zpool scrub -C` ships in 2.4.0. oshogbo.com/blog/89/ #FreeBSD #Linux #sysadmin #devops #storage
Don't Make ZFS Re-Read What It Just Read
I have already mentioned one of my improvements to scrub in an earlier post, Teaching ZFS about time. In that post I also claimed that scrub can be expensive, and that we were looking for ways to limi...
oshogbo.com
f you're looking for something to read today, I highly recommend @pagedout.bsky.social. Or maybe even two 🙂
Another post for #FreeBSD #admins - a private pkg repository behind mutual TLS. oshogbo.com/blog/88/ #devopes #secdevops
A Private pkg Repo Behind Mutual TLS
I am a big fan of mutual TLS ("mTLS" if you prefer the shorter spelling, "client certificates" if you are describing the half a user actually touches). Strangely, I rarely see it used in the wild. Tha...
oshogbo.com
Another post for #FreeBSD #admins - a private pkg repository behind mutual TLS. oshogbo.com/blog/88/ #devopes #secdevops
A Private pkg Repo Behind Mutual TLS
I am a big fan of mutual TLS ("mTLS" if you prefer the shorter spelling, "client certificates" if you are describing the half a user actually touches). Strangely, I rarely see it used in the wild. Tha...
oshogbo.com
Continuing the Aruba Cloud subject - I have packed up things and migrated out. Here's my story: oshogbo.com/blog/87/ #FreeBSD #OpenZFS #Cloud
Farewell Aruba, Hello OVH - A Migration Story
Aruba Cloud decided to retire VMware and push everyone onto their OpenStack offering. Fine, that is their call to make. VWhat I am less excited about is the thirty-day deadline, and the part where the...
oshogbo.com
Continuing the Aruba Cloud subject - I have packed up things and migrated out. Here's my story: oshogbo.com/blog/87/ #FreeBSD #OpenZFS #Cloud
Farewell Aruba, Hello OVH - A Migration Story
Aruba Cloud decided to retire VMware and push everyone onto their OpenStack offering. Fine, that is their call to make. VWhat I am less excited about is the thirty-day deadline, and the part where the...
oshogbo.com
Well it seems I have to migrate from Aruba Cloud they do not support #FreeBSD any longer :(
Well, I thought my next printer would be a @bambulabglobal.bsky.social... Now I’m not so sure anymore: www.youtube.com/watch?v=eb48...
Bambu Lab 3D printers: Never again
YouTube video by Jeff Geerling
youtube.com
Small summary about teaching ZFS the concept of time. oshogbo.com/blog/86/
Teaching ZFS about time
ZFS is a robust file system, in large part thanks to its copy-on-write design. Problems can still show up: flaky cables, dying drives, or the occasional cosmic ray flipping a bit. For exactly those si...
oshogbo.com
Small summary about teaching ZFS the concept of time. oshogbo.com/blog/86/
Teaching ZFS about time
ZFS is a robust file system, in large part thanks to its copy-on-write design. Problems can still show up: flaky cables, dying drives, or the occasional cosmic ray flipping a bit. For exactly those si...
oshogbo.com
Maybe it’s time to get back to blogging… even in the age of all-knowing LLMs. I have a feeling that “field experience” posts are something people are still looking for. oshogbo.com/blog/85 Let me know what you think.
When resizing a gmirror gives you a hard time
I recently ran into an annoying problem on one of my FreeBSD machines: resizing a gmirror. Spoiler: it stops being annoying once I remember to enable the human built-in "thinking" feature.
oshogbo.com
Maybe it’s time to get back to blogging… even in the age of all-knowing LLMs. I have a feeling that “field experience” posts are something people are still looking for. oshogbo.com/blog/85 Let me know what you think.
When resizing a gmirror gives you a hard time
I recently ran into an annoying problem on one of my FreeBSD machines: resizing a gmirror. Spoiler: it stops being annoying once I remember to enable the human built-in "thinking" feature.
oshogbo.com
It seems you can build RAM… in your backyard. www.youtube.com/watch?v=h6GW...
Making RAM at Home
YouTube video by Dr.Semiconductor
youtube.com
#OpenZFS enhancement: PR #18148 introduces failure domains for dRAID, improving data placement and resilience by making redundancy aware of underlying hardware boundaries. This reduces correlated failure risk and strengthens overall pool reliability. github.com/openzfs/zfs/...
Introduce failure domains to dRAID by andriytk · Pull Request #18148 · openzfs/zfs
Motivation and Context Currently, the only way to tolerate the failure of the whole enclosure is to configure several draid vdevs in the pool, each vdev having disks from different enclosures. But ...
github.com
The #eurobsdcon 2026 Call for Papers is open! 2026.eurobsdcon.org/cfp/ Submit by June 20th, come to Brussels September 9-13! Pre-submission guidance/mentoring available Also see nxdomain.no/~peter/what_... #freebsd #netbsd #openbsd #freesoftware #libresoftware #brussels #bruxelles
EuroBSDCon 2026
2026.eurobsdcon.org
Running your own AS (Autonomous System) on the public internet using a FreeBSD BGP Router with FRR (Free Range Routing), GRE Tunnels and Policy Routing - Blog Post by Christian Hofstede-Kuhn #FreeBSD #Network #BGP blog.hofstede.it/running-your...
Running Your Own AS: BGP on FreeBSD with FRR, GRE Tunnels, and Policy Routing
How I obtained my own AS number and IPv6 prefix, set up a FreeBSD BGP router with FRR, and built a tunnel overlay to bring globally routable addresses to servers that already have provider-assigned...
blog.hofstede.it
A few years ago, companies protected their source code at all costs - security, paranoia. Today: upload everything to two companies because they have an LLM. #Security evolves.
