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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 2. Solaris 11 Installation Methods FREE CHAPTER 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 diff between snapshots


If you have one or more snapshots of a filesystem, you can now take advantage of the saved metadata to do fast difference checks between them, or with the current filesystem, rather than having to manually traverse the filesystem with diff -r or rsync. It's not always two-second fast, but it is certainly convenient when you already have a snapshot made.

The only downside is that it does not tell you the actual file content that has changed, only that the file has changed overall. Even so, I have found this to be quite useful on occasions. For example, if there is some install command that you are not 100 percent confident of in what it does, creating a pre-install snapshot and then a diff, can tell you with certainty what happened on even a very large filesystem, with minimal system impact.

It can also tell you which files have merely been renamed whereas a normal diff would tell you "oldname file has been removed: newname file has been created".

Technically, there...

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