September 27, 2026 at 2:32 PM
that's the Boot Environment chapter of #openzfsmastery done! Covers FreeBSD and Proxmox.
I think my Saturday's done. It's pajama time.
I think my Saturday's done. It's pajama time.
September 26, 2026 at 10:47 PM
that's the Boot Environment chapter of #openzfsmastery done! Covers FreeBSD and Proxmox.
I think my Saturday's done. It's pajama time.
I think my Saturday's done. It's pajama time.
"While boot environments simplify recovering from bad upgrades, they can also accidentally uninstall security updates. Po-tay-to, po-tah-to." #openzfsmastery #footnote
September 26, 2026 at 6:27 PM
"While boot environments simplify recovering from bad upgrades, they can also accidentally uninstall security updates. Po-tay-to, po-tah-to." #openzfsmastery #footnote
Tomorrow's #60secondsOfWIP is recorded: "Lucas is Incompetent or Evil."
Yes, that's actual text from #openZFSmastery. Written by coauthor @allanjude.com, but it's in the book.
That's why I don't have coauthors. They get to know me too well.
Yes, that's actual text from #openZFSmastery. Written by coauthor @allanjude.com, but it's in the book.
That's why I don't have coauthors. They get to know me too well.
September 30, 2026 at 9:20 PM
Tomorrow's #60secondsOfWIP is recorded: "Lucas is Incompetent or Evil."
Yes, that's actual text from #openZFSmastery. Written by coauthor @allanjude.com, but it's in the book.
That's why I don't have coauthors. They get to know me too well.
Yes, that's actual text from #openZFSmastery. Written by coauthor @allanjude.com, but it's in the book.
That's why I don't have coauthors. They get to know me too well.
Me, this morning: Yay, I finished the #openzfsmastery boot environment chapter yesterday, I can move on.
Me, getting to desk and seeing the boot environment chapter: oh no.
Me, getting to desk and seeing the boot environment chapter: oh no.
September 27, 2026 at 3:00 PM
Me, this morning: Yay, I finished the #openzfsmastery boot environment chapter yesterday, I can move on.
Me, getting to desk and seeing the boot environment chapter: oh no.
Me, getting to desk and seeing the boot environment chapter: oh no.
Huh. Causing #openZFS failures is much more difficult now than it was ten years ago. #openzfsmastery
July 22, 2026 at 7:18 PM
Huh. Causing #openZFS failures is much more difficult now than it was ten years ago. #openzfsmastery
Today's #60SecondsOfWIP is out! From #OpenZFSMastery: "Lucas is Incompetent or Evil."
At mwl.io/archives/24997 or wherever mediocre podcasts are sold.
At mwl.io/archives/24997 or wherever mediocre podcasts are sold.
131: Lucas is Incompetent or Evil
some Allan Jude text from OpenZFS Mastery
mwl.io
October 1, 2026 at 12:46 PM
Today's #60SecondsOfWIP is out! From #OpenZFSMastery: "Lucas is Incompetent or Evil."
At mwl.io/archives/24997 or wherever mediocre podcasts are sold.
At mwl.io/archives/24997 or wherever mediocre podcasts are sold.
Preparing for battle ZFS boot environments on Proxmox for #openzfsmastery.
www.youtube.com/watch?v=C6cY...
www.youtube.com/watch?v=C6cY...
Modus Operandi
YouTube video by Front Line Assembly - Topic
www.youtube.com
September 25, 2026 at 12:45 PM
Preparing for battle ZFS boot environments on Proxmox for #openzfsmastery.
www.youtube.com/watch?v=C6cY...
www.youtube.com/watch?v=C6cY...
August 27, 2026 at 12:15 PM
Today in #openzfsmastery
"This is one of those times when the manual's dire warning is insufficient."
"This is one of those times when the manual's dire warning is insufficient."
July 21, 2026 at 5:12 PM
Today in #openzfsmastery
"This is one of those times when the manual's dire warning is insufficient."
"This is one of those times when the manual's dire warning is insufficient."
I got to use the word "pernicious" today, yay! #openzfsmastery
March 16, 2026 at 6:14 PM
I got to use the word "pernicious" today, yay! #openzfsmastery
Got the #openzfsmastery section on privilege delegation completed.
Tomorrow, I figure out delegating datasets to containers. Seems there's little integration, everything gets delegated by hand?
Sponsorships are still open on this silly thing: mwl.io/sponsor
Tomorrow, I figure out delegating datasets to containers. Seems there's little integration, everything gets delegated by hand?
Sponsorships are still open on this silly thing: mwl.io/sponsor
OpenZFS Mastery Sponsor – Tilted Windmill Press
mwl.io
September 29, 2026 at 9:43 PM
Got the #openzfsmastery section on privilege delegation completed.
Tomorrow, I figure out delegating datasets to containers. Seems there's little integration, everything gets delegated by hand?
Sponsorships are still open on this silly thing: mwl.io/sponsor
Tomorrow, I figure out delegating datasets to containers. Seems there's little integration, everything gets delegated by hand?
Sponsorships are still open on this silly thing: mwl.io/sponsor
I should replace this whole section with "make sure your filesystem blocks align with your disk's physical sectors or ZFS will GUT YOU LIKE THE SQUEALING PIGLET YOU ARE." #openzfsmastery
March 17, 2026 at 6:08 PM
I should replace this whole section with "make sure your filesystem blocks align with your disk's physical sectors or ZFS will GUT YOU LIKE THE SQUEALING PIGLET YOU ARE." #openzfsmastery
That's chapter 1 of #openzfsmastery off to Allan for review and some tax forms gathered. calling it a day.
January 29, 2026 at 9:26 PM
That's chapter 1 of #openzfsmastery off to Allan for review and some tax forms gathered. calling it a day.
TFW you install a new boot loader on a linux VM and reboot but the FreeBSD virtualization host disappears seconds later so you think you installed the loader on the wrong host, but it turns out that the robovac unplugged the server right then. #sysadmin
Anyway, #openzfsmastery is going swimmingly.
Anyway, #openzfsmastery is going swimmingly.
September 25, 2026 at 4:03 PM
TFW you install a new boot loader on a linux VM and reboot but the FreeBSD virtualization host disappears seconds later so you think you installed the loader on the wrong host, but it turns out that the robovac unplugged the server right then. #sysadmin
Anyway, #openzfsmastery is going swimmingly.
Anyway, #openzfsmastery is going swimmingly.
Working on #openzfsmastery, trying to fake boot environments with Proxmox. Because Proxmox integrates ZFS as a first-class filesystem.
It's going swimmingly.
You can donate to extend my suffering. mwl.io/sponsor
It's going swimmingly.
You can donate to extend my suffering. mwl.io/sponsor
September 22, 2026 at 9:57 PM
Working on #openzfsmastery, trying to fake boot environments with Proxmox. Because Proxmox integrates ZFS as a first-class filesystem.
It's going swimmingly.
You can donate to extend my suffering. mwl.io/sponsor
It's going swimmingly.
You can donate to extend my suffering. mwl.io/sponsor
"In Linux, running ZFS-on-root is an advanced skill.¹
¹ You can tell it's an advanced skill by the way senior sysadmins say, 'oh, it's not that hard.'"
#openzfsmastery #sysadmin
¹ You can tell it's an advanced skill by the way senior sysadmins say, 'oh, it's not that hard.'"
#openzfsmastery #sysadmin
September 10, 2026 at 6:15 PM
"In Linux, running ZFS-on-root is an advanced skill.¹
¹ You can tell it's an advanced skill by the way senior sysadmins say, 'oh, it's not that hard.'"
#openzfsmastery #sysadmin
¹ You can tell it's an advanced skill by the way senior sysadmins say, 'oh, it's not that hard.'"
#openzfsmastery #sysadmin
The Federation’s computers on Star Trek probably run a ZFS descendant.¹
¹ Cardassians run ReiserFS. #openzfsmastery #rejectedFootnote
¹ Cardassians run ReiserFS. #openzfsmastery #rejectedFootnote
October 13, 2025 at 6:29 PM
The Federation’s computers on Star Trek probably run a ZFS descendant.¹
¹ Cardassians run ReiserFS. #openzfsmastery #rejectedFootnote
¹ Cardassians run ReiserFS. #openzfsmastery #rejectedFootnote
I freely concede that this is a threat model not covered in #openzfsmastery
xcancel.com/1v100000/sta...
xcancel.com/1v100000/sta...
Diogenes of Cyberborea (@1v100000)
look what my 1yo was able to figure out.
32 TB gone.
xcancel.com
March 2, 2026 at 12:42 PM
I freely concede that this is a threat model not covered in #openzfsmastery
xcancel.com/1v100000/sta...
xcancel.com/1v100000/sta...
"They cranked the OpenZFS version up to 5000, leaving Oracle plenty of space to add new version numbers--as if Oracle would EVER innovate rather than merely exploit acquired intellectual property." #nonotryagain #openzfsmastery
March 19, 2026 at 7:09 PM
"They cranked the OpenZFS version up to 5000, leaving Oracle plenty of space to add new version numbers--as if Oracle would EVER innovate rather than merely exploit acquired intellectual property." #nonotryagain #openzfsmastery
That's the #openzfsmastery sponsorship announcement sent to the mailing lists.
Now to go scrape the marketing goo off my hide. That crap's corrosive, y'know.
Now to go scrape the marketing goo off my hide. That crap's corrosive, y'know.
November 25, 2025 at 5:53 PM
That's the #openzfsmastery sponsorship announcement sent to the mailing lists.
Now to go scrape the marketing goo off my hide. That crap's corrosive, y'know.
Now to go scrape the marketing goo off my hide. That crap's corrosive, y'know.
"If you need to use BIOS booting with ZFSBootMenu, check the project documentation. I'm not going through it because I live in 2026." #openzfsmastery #nonotryagain
I should probably put a link to the book sponsor page, but promoting #twistedPresents has devoured my promo spoons.
I should probably put a link to the book sponsor page, but promoting #twistedPresents has devoured my promo spoons.
September 26, 2026 at 2:39 PM
"If you need to use BIOS booting with ZFSBootMenu, check the project documentation. I'm not going through it because I live in 2026." #openzfsmastery #nonotryagain
I should probably put a link to the book sponsor page, but promoting #twistedPresents has devoured my promo spoons.
I should probably put a link to the book sponsor page, but promoting #twistedPresents has devoured my promo spoons.
"Oracle casts a toxic cloud over technology and their presence in open source is a toxic taint."
Torn between "too far" and "make sure this sentence retains ambiguity over which definition of 'taint' I'm using." #openzfsmastery
Torn between "too far" and "make sure this sentence retains ambiguity over which definition of 'taint' I'm using." #openzfsmastery
July 23, 2026 at 5:30 PM
"Oracle casts a toxic cloud over technology and their presence in open source is a toxic taint."
Torn between "too far" and "make sure this sentence retains ambiguity over which definition of 'taint' I'm using." #openzfsmastery
Torn between "too far" and "make sure this sentence retains ambiguity over which definition of 'taint' I'm using." #openzfsmastery
"If you have no ability to add actual storage, sparse volumes are like cocaine: they let you avoid an immediate capacity problem while creating a much larger future problem. Avoid them." #openzfsmastery #nonotryagain
August 25, 2026 at 2:36 PM
"If you have no ability to add actual storage, sparse volumes are like cocaine: they let you avoid an immediate capacity problem while creating a much larger future problem. Avoid them." #openzfsmastery #nonotryagain
Wrote about #openzfs quotas, reservations, and compression for #openzfsmastery today.
I'd appreciate your support making this book happen. mwl.io/sponsor
I'd appreciate your support making this book happen. mwl.io/sponsor
OpenZFS Mastery Sponsor – Tilted Windmill Press
mwl.io
August 18, 2026 at 8:01 PM
Wrote about #openzfs quotas, reservations, and compression for #openzfsmastery today.
I'd appreciate your support making this book happen. mwl.io/sponsor
I'd appreciate your support making this book happen. mwl.io/sponsor