Re: [meta-rockchip][PATCH] wic: add GPT partition names to partitions

["Trevor Woerner" <twoerner@gmail.com>]

On Thu 2024-04-18 @ 06:04:31 PM, Trevor Woerner wrote:
> A filesystem label (/dev/disk/by-label) is a property of, and stored in, the
> filesystem itself. Partitions that are not destined to hold filesystems are
> not formatted, therefore it is not possible to assign filesystem labels to
> such partitions.
> 
> However, if GPT partitioning is being used, GPT supports the notion of
> assigning labels/names to the partitions which are stored as part of the GPT
> partition table itself (instead of being stored in the filesystem in the
> partition). The naming is a bit confusing (different tools use different
> names) but `wic` calls this "--part-name", `lsblk` calls this "PARTLABEL", and
> `parted` calls this "name".
> 
> In Linux user-space these partition labels are referenced via
> /dev/disk/by-partlabel and provide an excellent way of finding these GPT
> partitions regardless of which backing device is actually being used (e.g.
> mmcblk0, mmcblk1... i.e. emmc, sdcard...).
> 
> An example where this would be handy is for interacting with a stored U-Boot
> environment. Another potential use would be to use one of the unused raw
> partitions to store information such as MAC addresses, serial numbers, etc.
> which could be set/updated "at the factory" as images are flashed.
> 
> Tested with both systemd and sysvinit on both rock-pi-e and rock-pi-s.
> 
> Signed-off-by: Trevor Woerner <twoerner@gmail.com>
> ---
>  wic/rockchip.wks | 18 +++++++++---------
>  1 file changed, 9 insertions(+), 9 deletions(-)

Applied to meta-rockchip, master branch.