Open Source Summit North America 2022

Open source software is not "open" unless it has a license that says you can use, modify, or redistribute it. This presentation will give a comprehensive overview of what an open source license is, the different types of licenses in common use, and why they are important. In addition, you will gain an understanding of how to develop software with multiple licenses (including open source and proprietary code) and identify conflicts between licenses. We will also talk about considerations for choosing a license appropriate for your project's use case. Most important, we will answer the question: "What is all this license stuff about anyway, and why should I care?" This session is suitable for anyone who is new to open source, curious about software licensing, and includes those who already have some knowledge but want a deeper level of understanding of how licenses interact. The presenter has over 10 years of experience in software auditing, open source license scanning, and training developers in OSS license compliance.

Linux has a myriad of storage options, and a number of layers that can be built one on top of another, to form some very robust, but potentially very complex, stacks that provide the entirety of the storage system. My intention is to work my way up from the most basic storage layer, physical storage, and explain what options there are from basic single disk and a file system type systems, to a full layered look at a system with raided disks, ssd caching, deduplication, all the way up through file systems in user space. This is specifically targeted as a high level overview of the systems involved, block, volume, and filesystems but it's also intended to go over some more complex systems, and how to achieve things like on the fly disk compression, deduplication, and give an overview of the different technologies available to achieve similar ends.