fhein, 26 days ago

If you’re using btrfs then you might need to rebalance it. I had the same problem, i.e. “no free space” while tools like df reporting that there should be available disk space, and it confused the hell out of me until I found the solution.

See manual: btrfs.readthedocs.io/en/latest/Balance.html

This are the commands I run every now and then, especially if my drive has been close to full and I delete a bunch of files to make more space:

<span style="color:#323232;">sudo btrfs balance start -dusage=10 /
</span><span style="color:#323232;">sudo btrfs balance start -dusage=20 /
</span><span style="color:#323232;">sudo btrfs balance start -dusage=30 /
</span>

The / at the end is the path, since it’s my root mount which uses btrfs. The example in the manual does 40 and 50 too, but higher numbers take longer time, even on an nvme ssd.