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# Linux (Pseudo)Filesystems: The Hidden Backbone of Cloud Native


- **Date:** Thursday, Jul 9, 2026
- **Time:** 11:30–12:00 (30 min)
- **Room:** Stage 8 - powered by Red Hat
- **Event:** World Congress 2026 Europe

## Description

Ever wondered what’s really going on under the hood of your containers or nodes?

Linux (pseudo)filesystems like procfs (/proc), sysfs (/sys), cgroupfs etc. quietly power the entire cloud-native world.
In this talk, we’ll explore what these filesystems actually do.. how overlayfs enables container layers,
how tmpfs keeps things fast, and why securityfs and efivarfs matter.
I'll give a brief intro in filesystems overall, then provide some deep dive info for selected pseudo-FS, their purpose and show how they make modern cloud systems tick.

## Speaker

### [Daniel Drack](https://www.wearedevelopers.com/@daniel-drack)

Senior DevOps Engineer at FullStackS


## Related talks at this congress

- [The Hidden Costs of CPU Limits in Kubernetes](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1444-the-hidden-costs-of) — Pavel Malyarevsky
- [Your Kubernetes Node Is Not a Server: Rethinking the OS Layer](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1359-your-kubernetes-node) — Natanael Copa
- [5 Years in Cloud Native: The Good, the Bad, and the Bill](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1112-5-years-in-cloud) — Simone Desantis
- [From Cloud Racks to Control Cabinets: Operating Kubernetes on Edge Devices](https://www.wearedevelopers.com/events/world-congress-2026-europe/sessions/1173-from-cloud-racks-to) — Thomas Weinschenk