Re: git: 0a2bc1aae36b - stable/12 - release: move installworld before installkernel

03.12.2021 22:20, Ed Maste wrote:

> The branch stable/12 has been updated by emaste:
> 
> URL: https://cgit.FreeBSD.org/src/commit/?id=0a2bc1aae36b44b2c9e16684bc6270b8a82943e2
> 
> commit 0a2bc1aae36b44b2c9e16684bc6270b8a82943e2
> Author:     Ed Maste <emaste@FreeBSD.org>
> AuthorDate: 2021-04-05 17:16:01 +0000
> Commit:     Ed Maste <emaste@FreeBSD.org>
> CommitDate: 2021-12-03 15:19:09 +0000
> 
>     release: move installworld before installkernel
>     
>     To support -DNO_ROOT work.  The top-level installworld target creates a
>     new METALOG starting with `#mtree 2.0` so it needs to be first, to avoid
>     overwriting installkernel METALOG entries.
>     
>     Reviewed by:    gjb
>     MFC after:      1 month
>     Sponsored by:   The FreeBSD Foundation
>     Differential Revision:  https://reviews.freebsd.org/D29582

The need to run installworld before installkernel makes remote major upgrade less reliable:
in case of unexpected reboot in process a system ends up with new binaries that may require new system calls
and old kernel. This is bad.

Is it possible to enhance install* targets so they do not overwrite what needs to be kept intact
to restore ability to install new kernel first?