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FreeBSD.Mastery.Advanced.ZFS.Volume.9.0692688684.pdf

发布时间：2022-06-07 发布人：admin 分类：说明书 资料大小：1.02M 资料格式：pdf 举报 版权申诉
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    Table of Contents
    Title Page
    Acknowledgements
    Chapter 0: Introduction
    Chapter 1: Boot Environments
    Chapter 2: Delegation and Jails
    Chapter 3: Sharing Datasets
    Chapter 4: Replication
    Chapter 5: ZFS Volumes
    Chapter 6: Advanced Hardware
    Chapter 7: Caches
    Chapter 8: Performance
    Chapter 9: Tuning
    Chapter 10: ZFS Potpourri
    Afterword
    Sponsors
    About the Authors
    Publishing Information
    Table of Contents Title Page Acknowledgements Chapter 0: Introduction Chapter 1: Boot Environments Chapter 2: Delegation and Jails Chapter 3: Sharing Datasets Chapter 4: Replication Chapter 5: ZFS Volumes Chapter 6: Advanced Hardware Chapter 7: Caches Chapter 8: Performance Chapter 9: Tuning Chapter 10: ZFS Potpourri Afterword Sponsors About the Authors Publishing Information
    Acknowledgements Our gratitude goes to the people who offered feedback on the manuscript that became this book: Will Andrews, Marie Helene Kvello-Aune, Josh Paetzel, Benedict Reuschling, Alan Somers, Matthew Seaman, and Wim Wauters. Lucas’ portions of this book were largely written on hardware from iX Systems (http://www.ixsystems.com). The authors would like to thank the FreeBSD Project and the FreeBSD Foundation for providing access to NVMe devices in the NetPerf cluster, and to Sentex Data Communications for hosting said cluster. Lucas would like to thank Jude for somehow convincing these folks to grant Jude cluster access, because there’s no way they’d give it to Lucas. Also because it means that Lucas didn’t have to write that part of the book.
    Chapter 0: Introduction The Z File System, or ZFS, is a complicated beast, but it is also the most powerful tool in a sysadmin’s Batman-esque utility belt. This book tries to demystify some of the magic that makes ZFS such a powerhouse, and give you solid, actionable intel as you battle your storage dragons. ZFS contains over 100 “engineering years” of effort from some of the best minds in the industry. While it has competitors, such as B-Tree File System (BTRFS), those competitors have a lot of catching up to do. And ZFS races further ahead every day. This book takes you into some of the more complicated and esoteric parts of managing ZFS. If you want to know why a single gigabyte of data fills your 2 GB drive, if you want to automatically update your disaster recovery facility, or if you just want to use boot environments on your laptop, FreeBSD Mastery: Advanced ZFS is for you. Just about everything in this book applies in general to OpenZFS. We use FreeBSD as the reference platform, but the mechanics of using OpenZFS don’t change much among platforms.
    Prerequisites The title of the book includes the word “Advanced.” We expect you to know a couple things before you can use this. The easy answer would be that you should read and assimilate two earlier FreeBSD Mastery titles: Storage Essentials and ZFS. But you might already know what’s in those books, so here are some details on what you need to bring with you. You’ll need familiarity with FreeBSD’s storage management layer, GEOM. On non- FreeBSD platforms you can use disks and partition devices for ZFS. Always use ZFS on disk or partition devices, not on RAID or other software devices. We assume you’re familiar with ZFS pools and datasets. You know how to add VDEVs to a pool, and understand why you can’t add a lone disk to your RAID-Z. You can take snapshots and create clones. If you want to use FreeBSD’s encrypted ZFS support, you must understand FreeBSD’s GELI encryption. (You could use GBDE if you’re relying on the encryption to preserve human life, but the built-in GELI support suffices for most of us. Also, GELI takes advantage of the AES-NI hardware crypto acceleration in modern CPUs.)
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