> Issue description: During boot, the kernel mounts the Btrfs root filesystem > correctly. However, later in the boot process, systemd-remount-fs attempts to > remount the root and other filesystems with modified mount options, and fails > with errors like “must be superuser to use mount”. This failure forces the > system into maintenance mode because subsequent mounts (e.g. /tmp) also fail. > I am not suspecting the mount options, rather the permissions.
Are the device and mount points owned by UID 0 (zero)? "The message must be superuser to use mount is a hint to a permission problem. The Linux system expects most system files to be owned by UID 0 (root)" (source: https://stackoverflow.com/questions/71448426/mount-dev-mqueue-must-be-superuser-to-use-mount-when-starting-a-yocto-linux)
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