October 2017
Intermediate to advanced
340 pages
9h 46m
English
Content preview from Learning Ceph - Second Edition
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RADOS Block Device Snapshots
Ceph supports the ability to take snapshots of RBD images and then use them at a later time. RBD snapshots are point-in-time, read-only copies of their respective RBD images. They are very useful if you wanted to go back in history to a time where you know your image was in a desirable state. A typical use-case for snapshots is backing up an image's state before running an application that has a chance of corrupting data. If the new application destroys your data, you can roll back time by reverting to the snapshot that you took before the destruction took place.
In order to see how a Ceph snapshot works and how to harness its functionality, let us create a file on our currently mounted RBD image and write some ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.