The Linux Sysadmin's Guide to Virtual Disks demonstrates the core concepts of virtual disk management. Real-world problems are covered in the book's "Cookbook" section. Other topics include: helper utilities, disk formats, troubleshooting tips, performance considerations, and comprehensive appendices.
If you're feeling generous or grateful, consider supporting the author by purchasing a hard copy of the first edition. It's cheap ($10.00 USD) and a nice thing to do .
The first edition of the Virtual Disk Guide was published on March 3rd, 2016.
The Virtual Disk Guide will always be free. Yes, free as in no cost to you. Even future updates are free! The book and all of the material to build it are Creative Commons licensed — it's that free.
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Tim Bielawa is an all-around geek. A System Admin/Coder at Red Hat by day, and open source hacker by night (and sometimes during the day, too), Tim has been involved in open source projects and communities for over a decade.
When he's not writing documentation you can find Tim blogging, coding, tweeting, or enjoying some fancy beers.
bitmath is a python module Tim wrote (inspired by working on this book) for using file size units (prefix units) as objects in code just like numbers. Features include unit arithmetic, sorting lists of file sizes, converting between units, finding the best readable representation, parsing strings into objects, the feature list goes on. If you do a lot of file size math, bitmath could save you quite a bit of time.