9.2-RC1: Problem with Kernel

[Walter Hurry]

On Sun, 11 Aug 2013 22:47:36 +1000, Ian Smith wrote:

> In freebsd-questions Digest, Vol 479, Issue 8, Message: 10 On Sun, 11
> Aug 2013 09:43:57 +0000 (UTC) Walter Hurry <walterhurry at gmail.com>
> wrote:
>  > On Sat, 10 Aug 2013 21:29:10 +0200, Polytropon wrote:
>  > 
>  > > On Sat, 10 Aug 2013 19:04:29 +0000 (UTC), Walter Hurry wrote:
>  > >> This is 9.2-RC1 on amd64 (upgraded from 9.2-BETA1 by refetching
>  > >> the source from releng/9.2 and rebuilding kernel and world).
>  > >> 
>  > >> The kernel compiles and runs fine using the supplied GENERIC, but
>  > >> when I try to use my custom kenel config file, on reboot I get
>  > >> this:
>  > >> 
>  > >> Mounting from ufs:/dev/ada0p2 failed with error 19
>  > >> 
>  > >> What module(s) have I missed?
>  > > 
>  > > Diff against the GENERIC kernel. Maybe "device xhci"?
>  > > What bootable media is listed when you type "?" at the mountroot
>  > > prompt?
>  > > If GENERIC boots and your kernel doesn't, there should be a
>  > > significant difference regarding the config file's content. :-)
>  > 
>  > Thanks for the reply. When I type "?" at the mountroot prompt I get:
>  > 
>  > List of GEOM managed disk devices:
>  > 
>  > with nothing shown.
>  > 
>  > After restoring the GENERIC kernel, the output from 'gpart list' is:
>  > 
>  > Geom name: ada0
> [..]
>  > Consumers:
>  > 1. Name: ada0
>  >    Mediasize: 21474836480 (20G)
>  >    Sectorsize: 512 Mode: r2w2e3
>  > 
>  > (This is a small VirtualBox VM.)
>  > 
>  > Kernel config is at http://paste2.org/h17Ih0PD
> 
> Please Walter, it's not fair to make us do the work of figuring out what
> you've changed from GENERIC in that, when all you need to provide is:
> 
> # diff -uw /path/to/GENERIC /path/to/YOURKERNEL
> 
> More ideal for custom kernel configs - for just these occasions - is:
> 
> include GENERIC ident YOURKERNEL # custom {no,}device and {no,}options
> statements
> 
Sorry. A diff wouldn't have helped much, as every line had changed due to 
my reformatting. Never mind, I'll work it out for myself by a process of 
elimination - and I'll post the answer here just in case anyone else is 
interested.