Can't recover, pacman says no space left on device

[cscs]

@cidig

Is there something wrong with btrfs?

If you are using btrfs it requires special maintenance.

See for example;

[HowTo] get "out of space" with BTRFS

The “out of space” problem of btrfs Anyone who uses btrfs should know about the “out of space” problem of btrfs. Here i try to briefly explain how this can happen. When btrfs gets into the “out of space” situation, it no longer has any room to move to free itself. Then no more file operations can take place. Often you can’t even delete files. The solution is explained in the manjaro btrfs wiki. But how does the problem actually arise? Let’s take a quick look at some made-up scenarios to get …

[HowTo] get Space on BTRFS

If you encounter a situation where a Btrfs volume is out of space, There is a way out However, you have to accept that Btrfs is a “strange” filesystem. So if you’re doing things that would help with other filesystems, it might NOT help with btrfs. If you want to know why, check out the wiki Here are a few simple tips: 1. Only use btrfs to meassure the unallocated space on your filesystem: sudo btrfs filesystem usage / 2. Look at “Device unallocated:” If the Unallocated size is less than 10GB…