Device Mapper is the invisible engine under your LVM volumes, your dm-crypt containers, your thin pools, and your multipath setup.

You quite likely use it every day. But do you know it?

This is the one where we open the bonnet: we'll cover dmsetup power moves — the low-level commands that let you inspect, manipulate, and sometimes terrify your storage stack in ways the higher-level tools don't expose.

We'll dive into dmstats, the criminally underused performance measurement framework that lets you track I/O at per-region, per-object granularity and actually answer the question "where is my storage bottleneck?" And we'll look at dmpy, a Python automation library that lets you drive all of this programmatically without shelling out to dmsetup like it's 2003.

The workshop will provide practical, useful, hands-on exercises that users can try out right away using provided VM images/KS files.

No prerequisites beyond basic system admin skills.