Re: don't know how to load module '/boot/loader'

I'm seeing the same bug in my qemu VM setup. I'm about to land, so won't
likely be able to fix this until I get to the hotel, but I'm pretty sure
that I know what caused it. I didn't notice it before the commit (I gotta
get a better regression suite in place for this stuff, rather than the
ad-hoc testing I've been able to do).

Warner

On Mon, Dec 11, 2017 at 3:37 PM, Alan Somers <asomers_at_freebsd.org> wrote:

> On Mon, Dec 11, 2017 at 3:30 PM, Warner Losh <imp_at_bsdimp.com> wrote:
>
>>
>>
>> On Mon, Dec 11, 2017 at 3:26 PM, Alan Somers <asomers_at_freebsd.org> wrote:
>>
>>> On Mon, Dec 11, 2017 at 3:19 PM, Warner Losh <imp_at_bsdimp.com> wrote:
>>>
>>>>
>>>>
>>>> On Mon, Dec 11, 2017 at 3:03 PM, Alan Somers <asomers_at_freebsd.org>
>>>> wrote:
>>>>
>>>>> I just upgraded my head machine to r326772.  Now, boot2 can't find the
>>>>> loader.  Instead, it tries to boot the kernel directly, which fails
>>>>> because
>>>>> the ZFS module isn't loaded.  If I break into boot2 and type "boot
>>>>> /boot/loader" I get the error "don't know how to load module
>>>>> '/boot/loader'".  I last updated on 30-Nov, so this bug must've been
>>>>> introduced since then.  Any ideas?
>>>>>
>>>>> BTW, I can successfully boot with the following commands:
>>>>> unload
>>>>> load /boot/kernel/kernel
>>>>> load zfs
>>>>> boot
>>>>>
>>>>> http://bayimg.com/iAKmFaAgl
>>>>
>>>>
>>>> I'd bisect :)
>>>>
>>>> However, try to update to just before this commit:
>>>>
>>>> Author: imp <imp_at_ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
>>>> Date:   Fri Dec 8 19:57:16 2017 +0000
>>>>
>>>>     Create interp class.
>>>>
>>>>     Create an interp class. Use it to separate out the different types
>>>> of
>>>>     interpreters: forth and simple with function pointers rather than
>>>>     via #ifdefs.
>>>>
>>>>     Obtained from: lua boot loader project
>>>>         (via https://bsdimp_at_github.com/bsdimp/freebsd.git
>>>> lua-bootloader)
>>>>     Sponsored by: Netflix
>>>>
>>>>
>>>>     git-svn-id: svn+ssh://svn.freebsd.org/base/head_at_326712
>>>> ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
>>>>
>>>> would be a good place to start.
>>>>
>>>> It's a shame we can't create zpool images with an unpriv'd user
>>>> command. Would help out the ZFS testing of the boot loader refinement.
>>>>
>>>> Warner
>>>>
>>>
>>> If I bisect this, what parts do I need to reinstall each time?  A full
>>> buildworld would be too slow.  Is it sufficient to reinstall stand?
>>>
>>
>> Just rebuild stand, reinstall it and reboot.
>>
>> Also, why are you trying to load /boot/loader from /boot/zfsloader? That
>> has me confused. The screen shot looks like it found the kernel OK and was
>> going to boot it, but then you interrupted it, unloaded it and tried to
>> load /boot/loader. Shouldn't that be /boot/kernel or /boot/kernel.old or
>> something like that?
>>
>> OK is /boot/loader's prompt (boot2 has no such prompt).... maybe the real
>> bug here is that the menu has stopped working leading to your confusion...
>>
>
>> Warner
>>
>
> It certainly could be a bug in the menu.  I'm definitely confused, because
> this is a domain I've seldom dealt with, since it usually just works.  If
> I'm actually in /boot/loader, then there are two problems:
> 1) The menu isn't working
> 2) The loader isn't reading /boot/loader.conf.
>