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Tag: ZFS

ZFS – errors: Permanent errors have been detected in the following files:

February 3, 2019 Derrick Leave a comment

I got the following messages today when I inspected my ZFS: errors: Permanent errors have been detected in the following…

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Posted in: Computer Problems, Technology, Troubleshooting, ZFS Filed under: ZFS

“ZFS on Linux”: The ZFS modules are not loaded. Try running ‘/sbin/modprobe zfs’ as root to load them.

April 10, 2018 Derrick 9 Comments

Last Updated: Oct 3, 2019 This article is based on my experience with CentOS 7. If you are running other…

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Posted in: Computer Problems, Everyday Computer Problem, Server Problems, Technology, Troubleshooting, ZFS Filed under: Linux, ZFS

ZFS Cluster: A Network-Based ZFS Implementation

June 5, 2017 Derrick Leave a comment

I always like to experimenting the idea of building a ZFS cluster, i.e., it has the robust of the ZFS…

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Posted in: Everyday Computer Problem, Server Problems, Technology, ZFS Filed under: ZFS

How to install ZFS on RHEL / CentOS 7

January 4, 2017 Derrick 5 Comments

A friend of mine likes to try ZFS on CentOS 7, therefore I decide to make a guide for him.…

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Posted in: Everyday Computer Problem, Server Problems, Technology, ZFS Filed under: Linux, ZFS

CentOS/RHEL 7 – No ZFS After Updating the Kernel

December 12, 2016 Derrick 10 Comments

Let’s all agree with this fact: ZFS is foreign to Linux. It is not native. You can’t expect that ZFS…

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Posted in: Computer Problems, Everyday Computer Problem, Server Problems, Technology, Troubleshooting, ZFS Filed under: Linux, ZFS

modprobe: ERROR: could not insert ‘zfs’: Required key not available

June 10, 2016 Derrick Leave a comment

Today I was trying to install ZFS on a CentOS 7 box. Typically rebooting the computer, the ZFS mododule will…

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Posted in: Computer Problems, Everyday Computer Problem, Technology, Troubleshooting, ZFS Filed under: Linux, ZFS

CentOS/RHEL 6: No ZFS after upgrading the kernel

March 2, 2016 Derrick Leave a comment

This article is mainly for CentOS 6, please visit here for CentOS 7. After I upgraded the CentOS / RHEL…

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Posted in: Computer Problems, Server Problems, Technology, Troubleshooting Filed under: Linux, ZFS

Running ZFS on Linux: Things you should know and be aware of

February 29, 2016 Derrick 4 Comments

ZFS is the next generation file system. Unfortunately, it won’t be shipped with Linux because of legal/licensing issues. Fortunately, it…

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Posted in: Computer Problems, Everyday Computer Problem, Product Comparison, Technology, ZFS Filed under: Linux, ZFS

ZFS Performance: Mirror VS RAIDZ VS RAIDZ2 vs RAIDZ3 vs Striped

September 25, 2014 Derrick 20 Comments

I always wanted to find out the performance difference among different ZFS types, such as mirror, RAIDZ, RAIDZ2, RAIDZ3, Striped,…

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Posted in: Computer Problems, FreeBSD, Server Problems, Technology, ZFS Filed under: ZFS

How to improve ZFS performance

August 24, 2014 Derrick 44 Comments

First Edition: March 14, 2010 Last Revised: April 26, 2018 In this tutorial, I will show you how to improve…

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Posted in: Computer Problems, Everyday Computer Problem, FreeBSD, Server Problems, Technology, Troubleshooting, ZFS Filed under: FreeBSD, Performance, ZFS, ZPOOL

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I 'm Derrick, a software engineer, an award-winning dad, an adventurist, a photographer and a chief, living in beautiful Madison, Wisconsin.

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