Fixing a Slow BTRFS Root Partition on Manjaro
Disclaimer: This article was written with the help of an AI assistant (Claude by Anthropic), based on a real troubleshooting session. Commands and steps were verified during that session, but always read what a command does before running it as root, and adapt the steps to your own system.
A practical guide to diagnosing and fixing the most common cause of file-copy lag on Manjaro installs that use BTRFS (the default).