I have damaged my btrfs root file system.
I´ve run into a known problem: My system got unresponsive because the btrfs process and / or btrfs-transactio process used 100% cpu.
I´ve waited for approx 3 hours for those processes to finish. As they didn´t, I´ve made a restart (with shutdown, no hard power-off).
After that, my system didn´t start normally. I started in recovery mode and waited for the file system checks to finish. After that, the system still didn´t start normally.
So I booted from a stick and ran btrfs check --repair, which showed and repaired an incredible amount of errors.
My system still doesn´t boot normally. I am now doing a backup of my other partitions and consider a new installation.
Or is there hope to repair the file system (I am definitely not a file system guru)?
Also, I consider to use ext4 for my root partition for my fresh installation. I had a similar problem some weeks ago, but then recovery mode recovered my system. It seems that btrfs is more a file system for experts.
Thanks for any ideas,