Blog

Posted on

“OpenZFS Mastery” sponsorships now open

I’ve shipped all the Networking for System Administrators, 2nd ed sponsor gifts. I’m getting copies for the Kickstarter backers out the door.

By popular demand, I’m opening sponsorships on OpenZFS Mastery, by myself and Allan Jude.

Epub sponsors get their names in the epub/mobi versions of the book. They will receive a free copy of the completed ebook in epub and a PDF of the print version, all DRM-free, once we finish writing it.

Print sponsors get their names in the ebook and print version of the book, the DRM-free ebook, and a physical gift that might or might not be the book. The gift will be personalized. Please provide a shipping address and a phone number that can receive SMS! My shippers are asking for phone numbers even in the US, so I’m asking you.

Once the book exists there will also be a Kickstarter, but that will act more as a pre-order. Sponsors support me as I write and test the manuscript. The print sponsorship (or Patronizing) will also be the only way to get a personalized gift mailed to you.

Here’s the book description.

OpenZFS Mastery

by Michael W Lucas and Allan Jude

Data Storage for the 21st Century

ZFS, the fast, flexible, self-healing filesystem, revolutionized data storage. Leveraging ZFS changes everything about managing Unix-like systems.

“Thanks for making ZFS knowable by everyone” — Matt Ahrens, ZFS co-creator

“Thanks for doing this… now I don’t have to” — Jeff Bonwick, ZFS co-creator

With OpenZFS Mastery you’ll learn to:

  • select hardware for ZFS systems
  • arrange your storage for optimal performance
  • configure datasets that match your enterprise’s needs
  • repair and monitor storage pools
  • expand your storage
  • use compression to enhance performance
  • determine if deduplication is right for your data
  • understand how copy-on-write changes everything
  • snapshot filesystem
  • automatically rotate snapshots
  • clone filesystems
  • optimize how ZFS uses and manages space
  • Use boot environments to make the riskiest sysadmin tasks safe
  • Delegate filesystem privileges to users
  • Delegate ZFS datasets to containers
  • Quickly and efficiently replicate data between machines
  • split layers off of mirrors
  • optimize ZFS block storage
  • handle large storage arrays
  • select caching strategies to improve performance
  • manage next-generation storage hardware
  • identify and remove bottlenecks
  • build screaming fast database storage
  • dive deep into pools, metaslabs, and more!

Whether you manage a single small server or multinational data centers, OpenZFS Mastery will simplify your life.

What’s Changed?

This might be considered a second edition of FreeBSD Mastery: ZFS and FM: Advanced ZFS, so: what’s different.

The old stuff still works, but OpenZFS has grown many features in the last ten years. The OpenZFS project now considers Linux a tier-one platform. RaidZ arrays can be expanded. ZFS rewrite. Rebalancing arrays. Native encryption. Compressed ARC. Deduplication is less useless. Even compression has changed. Gobs of stuff.

This edition will be published as a single volume.

Why Sponsor?

It’s a terrible deal, but people find reasons.

I’m hoping to get this book done in just a few months. Sponsor while you can.

107: Which Drive Is It?

Have some OpenZFS Mastery.

“ZFS reports that one of the seventy-nine drives in our array is failing? Great! We can replace it in a convenient maintenance window before it causes problems. Uh… which drive is it?”

If you have a large storage array, you need proper physical and logical labeling. Keep a spreadsheet of each drive’s physical location and the information presented to the operating system, and also document this within ZFS itself. It’s easier than it sounds. Proper preparations during installation let you zero right in on a failed disk—even a disk at a remote facility. Jude runs a lot of very dense storage arrays in locations all over the world, and uses this scheme to keep hard drive maintenance from overwhelming him. He even records warranty information, expiration dates, model numbers, and more within ZFS so his monitoring system can flag sixty days before the warranty runs out.

It’s a couple days before I wanted to announce it, but if the new OpenZFS book is of interest you might look at https://sponsor.mwl.io.

Posted on

“Networking for System Administrators, 2nd ed” is arriving

The printer notified me that they’ve shipped the Patronizer and signable Kickstarter copies of Networking for System Administrators, 2nd ed to me. UPS hasn’t received them yet, but tracking numbers exist. I’ve added it to my web site, the front page gallery, and–of course–the SNMP MIB.

I’ve put the ebook, paperback, and hardcover up in my store. If you order print in the next few weeks, it should arrive before the December Solstice Holiday Of Your Choice.

It releases to retail channels 1 December 2025. While Kindle versions will be available from many retailers, it won’t be in Amazon’s Kindle store for the same reasons as my last couple of tech books (RYOMS and OMF). So you might as well buy it from me.

If you are getting a print book from me as either as a Patronizer or sponsor: be dang sure I have your address and SMS-capable phone number. Email me with any corrections or updates.

If you backed the Kickstarter for print: 17 of you still owe me current shipping addresses and SMS-capable phone number. Please fill out your survey.

I will spend Wednesday prepping shipping labels so that I can slam the books out assembly-line style. After that, I’ll check for stragglers and ship every couple of weeks.

Thanks to all of you for your support! I’m looking forward to getting this book into your hands.

Posted on

October’s Osmundaceous Sausage

This post goes to Patronizers in October and becomes public in November. Not a Patronizer? You could be! $12 a year gets you my latest updates, occasional free tidbits, and the completely pointless MWL Footnote Fortune File, which will soon be updated for the new edition of Networking for System Administrators.

Speaking of which, the N4SA2e Kickstarter is rolling along just fine. No, it’s nowhere near the insane RYOMS Kickstarter, but it’s doing nicely. Comparison is the thief of joy, and of paying the mortgage.

I have a deep enough backlist that I can give books away as stretch goals. There’s a delicate balance between “dump everything on backers to make it a better deal” and “flood backers with stuff.” I want this to be a good enough deal while leaving space for people to go to my store and buy more, or buy print versions, or… or… just give me money, okay? Perhaps if I had paid more attention during EuroBSDCon I would have changed some of the stretch goal levels, but I staggered around all week in a state of near-hallucinatory jet lag.

Don’t get me wrong, EuroBSDCon was well-run and had great speakers. The worst problem I knew of was a bad HDMI cable, which means the con went great. Croatia is lovely. It is also the birthplace of the cravat, so each speaker got a tie. The silly thing is, two days before leaving for Croatia we cleaned out our cedar closet and I not only discarded all my ties, I established a life goal of never needing a tie again. I’m closing on 60, so this seems perfectly achievable.

I’m keeping this tie, though. Because it’s meaningful.

My last meeting at the con ended at 10:30PM Sunday. I had to leave for the airport at 3:30AM. Flying on ninety minutes sleep? That’s a whole REM cycle, I’m fine! Except the flight from Zagreb to Amsterdam was delayed by fog, so I missed my connection to Detroit. The airline automatically rebooked me on the next flight out, which would be fine except for the seat assignment in the middle of the back row. The last time I sat in that seat for an hour, my innards went into reverse and I had to be helped off the plane. Can’t imagine what nine hours of that would do. I had to find an airline agent and beg for help, despite being semiconscious. They rebooked me in the economy-plus “torture me less” class I originally paid for. I thanked her profusely and went to buy stroopwaffles before hallucinating my way to the gate.

Yes, airport stroopwaffle is sad. I submit to you, however, that Dutch airport stroopwaffle is inherently better than any commercially available American stroopwaffle.

Get on the plane. Aisle seat along the side. Two seats, side-by-side. There was a 20ish girl sitting in the window seat, dressed all in black and with a nose piercing. I feel kind of glad that the next generation is keeping up the Old Ways, but just say “hi” and settle into my seat.

Across the aisle, an older lady settles in place and looks around. Right before takeoff she leans across the aisle and says, “You know, I think it’s really nice that people like you take family vacations.”

I have had 90 minutes of sleep in the last 36 hours so I just say “Uh, thanks?”

It doesn’t hit me until we’re in the air that I’m wearing black pants, a dark shirt, and a black FLA hoodie. That lady thought that the girl sitting next to me was my child.

So, yeah. If you ever feel the urge to say people like you, you should probably just not.

Besides, the girl was clearly emo goth. I firmly believe that “if it’s not on the Industrial Records label it’s not industrial, it’s just sparkling noise.” You might argue I’m a primordial rivethead from before the fashion industry swiped the word. Anyway, totally different and I have no idea how she thought we were together.

Made it home. Stayed up until 9PM. Went to be. Slept like the dead for eight hours and woke up feeling like a lich.

Which is another reason I rarely travel overseas. It’s now my second day back. I feel like I spent nine hours being beaten with an Airbus. I want to keep these posts G-rated, or maybe PG, so we’re not going to discuss my sinuses.

Add to that: the copyedits for N4SA2e arrived yesterday. I want to get this book ready and a print proof ordered so I can fulfill the Kickstarter ASAP. I can’t open sponsorships on the OpenZFS book until that’s done–okay, technically I could but, you know, ethics. The way the meatsuit feels, I probably won’t feel halfway decent until next week. I spent a few days before EuroBSDCon preparing for the trip. One week in Europe costs three weeks of writing time. I imagine the cost for going to Asia would be similar.

The work I had done on the OpenZFS book has fallen out of my brain. Fortunately I was still in Chapter 0 so it won’t be that hard to load back into working memory.

This is all a long-winded way to say, there are reasons I don’t do EuroBSDCon or AsiaBSDCon every year. I’m always glad to meet readers, up until social exhaustion kicks in and I’m not happy to meet anyone. I left home for exactly that.

But if I routinely attended AsiaBSDCon and EuroBSDCon every year, that’s close to two months writing time lost.

Don’t get me wrong, I had a great time in Croatia! The people were grand, the food was delightful, the BSD crowd charming. But travel grows more difficult every year. I’d like to say something about the work I accomplished this month, but instead it’s a confessional that I haven’t done much actual work.

Despite aches and congestion, actual work begins this week. It’ll be slow, but it needs doing.

I’m going to close with a photo from Croatia: yours truly, at Zagreb’s Nikola Tesla statue.

No idea how someone could think I’m emo. Not with those purple-glitter-Crocs.

106: That Version of GRUB

I skipped last week due to Excessive System Administration, but here’s a snippet from OpenZFS Mastery.

Lucas’ virtualization host for testing this book ran bhyve on FreeBSD 14. FreeBSD 14 uses OpenZFS version 2.2, but the book you are reading right now had to include the RAIDZ expansion of OpenZFS 2.3. The newer OpenZFS was available as an add-on package. OpenZFS 2.3 can read OpenZFS 2.2 pools, but the reverse is not true. So long as the package and the kernel don’t fall out of synchronization, everything will work just fine. The odds of desynchronization are, eventually, one hundred percent, especially when destructively testing every option. The solution was to separate the zroot boot pool from those used for testing, . The zroot boot pool needed to remain compatible with the base system, while the drives used for virtualization and testing could be upgraded. Set compatibility property to lock the feature set to those supported by the base system.

Sponsorships for OpenZFS Mastery will not open until I ship out gifts for the last sponsorship. I don’t take money for a new thing until the previous new thing is complete. Stupid ethics!

Posted on

N4SA2e Fulfillment Status

The N4SA2e production process is proceeding apace.

The print books are finalized. Books for me to sign have been ordered. The printer tells me that they’ll ship to me in about 10 days.

When the printer tells me they’ve shipped, I will prepare shipping labels for Patronizers, sponsors, and Kickstarter backers. You getting an email with a tracking number doesn’t mean your book has shipped; it means I am awaiting your book. When the books arrive, the assembly line kicks in and I start packing.

Next week, I order drop shipments for Kickstarter backers. This means your survey answers will be finalized. Hopefully few of you have moved unexpectedly in the last few weeks. Remember, drop shipments do not get tracking numbers. (See “Fulfillment” at https://www.kickstarter.com/projects/mwlucas/networking-for-system-administrators-2nd-edition/ .)

Some of you sent corrections to the ebook. Those corrections have been uploaded.

Ebooks are fulfilled. I still have to write the stretch goal advice column. It’ll be exclusive to my backers and supporters, at least until the 10-year collection comes out.

Oh, and: the special edition looks pretty decent. I am pleased with it.

Once I ship the books, I will open sponsorships on OpenZFS Mastery.

105: A Fully Patched ShroomOS

Here’s a tidbit from the backers-only special edition of Networking for System Administrators.

All those shrooms were one interconnected, internally networked living thing.

Networked. Sort of like computers.

Except mushroom networks are efficient. The nodes eliminate interoperability issues by requiring identical hardware and a fully patched ShroomOS. The Internet would be infinitely better if every node ran BeOS or, better still, Fifth Edition Bell Laboratories UNIX on VAX. But the Humungous Fungus infects trees and shrubs much like the Internet infects washing machines and democracy. Most of an a. ostoyae colony is buried underground. Most of the Internet is buried in concrete. The Humungous Fungus wins on points because it is not only edible, it is a delicacy. No matter how thoroughly you stir-fry your laptop or how much black bean sauce you add, it remains unpalatable.

If you need a tie breaker? Fungi are at peace. They don’t even try to support printers.

If you didn’t back the book before now, this bit is all you will ever see.

104: Software RAID on Windows 3.1

“Trust” seems to be a recurrent theme of the OpenZFS book. Here we discuss so-called hardware RAID.

All RAID is software RAID. Your hardware RAID controller runs a custom operating system to perform RAID tasks, and in the process obscures the storage hardware from the operating system. This made sense back in the early days of widespread commercial computing, when consumer operating systems could not be trusted. Spend three seconds contemplating OS-level software RAID on Windows 3.1, and you’ll understand why hardware RAID became ubiquitous. The computing ecosystem has changed. Our operating systems have improved. Our hardware is billions of times more powerful.

ZFS is designed for direct access to the hardware. It deliberately stores critical metadata on multiple disks. It watches those disks for errors, and makes decisions based on those errors. A hardware RAID device hides all of this worrisome detail from the operating system, eliminating ZFS’ ability to heal itself. Hardware RAID presents no competing abilities.

The Sinclair ZX81 was as good as computers got.

Posted on

N4SA2e Print Sponsor Address Check

Anywhere from 1%-5% of sponsors move before I ship print sponsor gifts. (Yes, they’re gifts, not preorders. Because I send sponsors things.) In the past, I’ve eaten the cost of reshipping these. With hundreds of print sponsors, that small error rate becomes an expensive pile.

So I went into my store system, extracted all the sponsor orders on “Networking for System Administrators, 2nd edition,” and converted them to a GoShippo postage ordering spreadsheet so I’m all set to order postage for sponsor gifts. I then wrote a script to extract sponsor addresses from the file and email them to request address verification and a shipping phone number.1

If you’re a print sponsor of this book, you should have an email requesting you verify your address and phone number. If address and phone number are correct, ignore the mail. If something is wrong or missing, please reply with corrections. Yes, some folks will miss the verification. I’ll wind up eating some reshipping cost. But with your help it’ll be less than otherwise–and you’ll get your books earlier!

If you didn’t get the email, you probably also didn’t get the email with the ebook links. Email me with your order number and I’ll try again.

I’m also amused to note that for the first time since I started offering book sponsorships, several print sponsors left the United States. I charge extra shipping for overseas sponsors. I’m not doing chasing people for extra, though. Those folks have my sympathy, envy, and gratitude.

I probably need to set a “so you fled the US” policy for future sponsorships, though.