On Sat, Sep 16, 2023 at 08:57:28PM +1000, Simon Burge wrote:
> The only corner case that an older kernel won't understand a longer root
> device name passed in by a newer /boot as the old kernel will still have
> the 16 char length limit.
Yes, old kernels will truncate the name. Since that's supposed to be
not found, the kernel will just come up without a root and ask.
A new record type on the other hand won't be understood and the kernel
will fall back to other root deducing methods and might scucceed in
finding a wrong partition. You could prevent this by always providing
an old dummy record with a non-empty string.
--
Michael van Elst
Internet: mlel...@serpens.de
"A potential Snark may lurk in every tree."
