Using bootspec with RAUC and redundant partitions

[robin]

On 2020-09-30 13:48, Enrico Jörns wrote:
> Hi Robin,
> 
> Am Mittwoch, den 30.09.2020, 13:26 +0200 schrieb robin:
>> Enrico,
>> 
>> > On 2020-09-30 10:09, Enrico Jörns wrote:
>> > > Hi Robin,
>> ..
>> > > Why this would work anyway is because barebox extends the kernel
>> > > commandline with the root= entries required to boot the kernel from
>> > > that specific partition where it did read the entry from.
>> 
>> Re-reading this, do you mean that the blspec files on the rootfs
>> partitions
>> should contain a root=/dev/mmcblk* of the partition they are on? And
>> thus
>> still contain dynamic (install time computed) configuration?
> 
> no, what I meant was the opposite: To exclude this information from the
> blspec file.

ack, than we're on the same page here ;)

>> If I use 'boot /mnt/mmc2.4/boot' barebox finds the spec, kernel and 
>> dtb
>> but my root= is not set in the kernel commandline.
> 
> A little detail I forgot to mention is that barebox requires you to
> have a line 'linux-appendroot true' in the blspec file.

Thats what I missed. A custom bootspec key :P

  blspec: booting vicut1-1.05.88.2.1 from mmc2
  Adding "root=PARTUUID=f340a0f5-05" to Kernel commandline

Now works as previously discussed, thanks!

Best regards,
Robin van der Gracht