After a recent change enforcing all the partitions to be on the same
block device, encrypted partitions are no longer being detected
correctly. This is because the assumption that the parent block device
is a substring of the actually mounted block device does not work
for LUKS devices - the mount will either be /dev/mapper/luks-XXX
or /dev/dm-X while the parent device is still e.g. /dev/sda.
The usual balenaOS boot partition is also split in two - boot and efi.
The boot partition (mounted under /mnt/boot) is encrypted and the efi
partition (mounted under /mnt/efi) is not.
This patch generalizes the detection of the parent device so that
it works with both encrypted and unencrypted partitions.
Change-type: patch
Signed-off-by: Michal Toman <michalt@balena.io>
As the Supervisor is a privileged container, it has access to host /dev, and therefore has access
to boot, data, and state balenaOS partitions. This commit sets up the framework for the following:
- Finds the /dev partition that corresponds to each partition based on partition label
- Mounts the partitions into set mountpoints in the device
- Removes reliance on env vars and mountpoints provided by host's start-balena-supervisor script
- Simplifies host path querying by centralizing these queries through methods in lib/host-utils.ts
This particular changes env vars for and mounts the boot partition.
Since the Supervisor would no longer rely on container `run` arguments provided by a host script,
this change moves Supervisor closer to being able to start itself (Supervisor-as-an-app).
Change-type: minor
Signed-off-by: Christina Ying Wang <christina@balena.io>
