When testing with a / mountPoint set to subvolume: "" it tried and
failed to mount the subvolume:
.. Running ("mount", "-t", "btrfs", "-o", "subvol=,", "/dev/sda3", "/tmp/calamares-root-ylvhpxys/")
.. Target cmd: ("mount", "-t", "btrfs", "-o", "subvol=,", "/dev/sda3", "/tmp/calamares-root-ylvhpxys/") Exit code: 32 output:
mount: /tmp/calamares-root-ylvhpxys: wrong fs type, bad option, bad superblock on /dev/sda3, missing codepage or helper program, or other error.
This fix makes the following config in mount.conf let us drop out of any
subvolume handling:
btrfsSubvolumes:
- mountPoint: /
subvolume: ""
deb35d8b49