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Oracle Solaris 11: First Look

You're reading from   Oracle Solaris 11: First Look A sneak peek at all the important new features and functionality of Oracle Solaris 11

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Product type Paperback
Published in Jan 2013
Publisher Packt
ISBN-13 9781849688307
Length 168 pages
Edition 1st Edition
Languages
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Author (1):
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Philip P. Brown Philip P. Brown
Author Profile Icon Philip P. Brown
Philip P. Brown
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Table of Contents (19) Chapters Close

Oracle Solaris 11: First Look
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. IPS – The Image Packaging System FREE CHAPTER 2. Solaris 11 Installation Methods 3. Sysadmin Configuration Differences 4. Networking Nuts and Bolts 5. NWAM – Networking Auto-reconfiguration 6. ZFS – Now You Can't Ignore It! 7. Zones in Solaris 11 8. Security Improvements 9. Miscellaneous IPS Package Reference
New ACL Permissions and Abbreviations
Solaris 10 Available Enhancements Index

ZFS root – no more UFS


One thing that may prove to be an emotional barrier to upgrading is that having your root filesystem on plain old UFS-on-disk-slices, mirrored or otherwise, is no longer an option. You must use ZFS as your root filesystem. The UFS filesystem is no longer supported as a bootable filesystem for Solaris 11.

Tip

An apparent oddity for those who are familiar with ZFS best-practices is that ZFS root pools must be made on disk slices (format entities) rather than be set to use the entire disk. Normally, this would mean that ZFS would not fully optimize write-cache use. However, for root-disk pools, ZFS makes an exception and treats them in the same way that it treats ZFS-on-whole-disk pools.

Primary benefit of ZFS root filesystem

The ostensible reason for this forced change of root filesystem type is for mandatory patching safety. IPS, the new packaging and patching system, is integrated with ZFS. It insists on making a special bootable snapshot of a currently working system...

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