BTRFS Problem read-only / free space

[andreas85]

You find good Information about Btrfs in the wiki

Btrfs

there is a special section about NO SPACE - problems

and in

[how to] Manual rollback with btrfs

Difficulty: ★★☆☆☆

Why roll back?

If Manjaro doesn’t want to boot into the graphical user interface. If an update managed to break an application you need …

Now btrfs pays off! With a good layout and snapper. Please read all of the instructions through to the end before you begin. Only a few steps are necessary for a rollback:

Boot a rescue Manjaro

Either from CD or from a live USB stick or somewhere else. Under no circumstances use the btrfs volume that you want to repair. If the nece…

[how to] rescue data from a damaged btrfs volume

Difficulty: ★★☆☆☆ You used btrfs. Now it’s paying off. There is an easy way out (I’ve already done this myself):

In most cases, when a btrfs volume breaks, it is possible to recover the data

This is because btrfs works with copy on write. This means that new changes are always appended at the end, so to speak. The previously existing data is not actually overwritten. (In reality this is a bit more complicated, but for us here this simplified view is sufficient). If the file system ge…

Unable to boot after running out of disk space during an update

I’ve actually solved the problem already but forgot to post about it. I followed similar steps to yours. Thank you very much for such a clear post! This is what I did from what I can remember: Make a LiveUSB of manjaro and boot into it. Mount the “@” subvolume of the btrfs partition mount -o subvol=@ /dev/sda1 /mnt Enter the pamac temp build directory and delete the ceph-libs build logs (which took around 2GB of space). It was somewhere in /var/tmp/pamac or /var/tmp/pamac-build, can’t rememb…

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https://btrfs.readthedocs.io/en/latest/btrfs-check.html