[HOW-TO] CentOS on bhyve

[Allan Jude]

On 2014-09-05 17:57, Dan Mack wrote:
> On Sat, 8 Mar 2014, Peter Grehan wrote:
> 
>> Hi Rudy,
>>
>>> Peter, anyway to get grub-bhyve to automatically load /grub/grub.conf
>>> from a CentOS install?
> 
> <snip>
> 
>> CentOS is grub v1 which isn't quite compatible with grub2 (e.g. linux
>> -> kernel).
>>
>> grub-bhyve can pick up a config file from the host system: use "-r
>> host" to force that, and the -d option to change the default path for
>> grub.conf. No need to redirect input.
>>
>> Then, in grub.conf on the host, put in the absolute path with the grub
>> commands e.g.
> 
> <snip>
> 
>> (the console=ttyS0 isn't needed: grub-bhyve auto-inserts that).
>>
> 
> 
> Let me resucitate this thread ...
> 
> I just tried this on Centos7 and expeience the same lack of grub menu.
> I was able to work around it by manually entering the manual paths for
> linux and initrd but wouldn't it be nice ...
> 
> However, on the Centos7 install, there appears to be both a grub/ and
> grub2/ configuration directory:
> 
>  |
>  | grub> ls (hd0,msdos1)/
>  | Possible files are:
>  |  grub/ grub2/ ...
>  |
> 
> and in the grub2 folder there exists a seemling grub2 compatible
> grub.cfg file:
> 
>  | grub> cat (hd0,msdos1)/grub2/grub.cfg
>  | #
>  | # DO NOT EDIT THIS FILE
>  | #
>  | # It is automatically generated by grub2-mkconfig using templates
>  | # from /etc/grub.d and settings from /etc/default/grub
>  | #
>  | <snip>
> 
> Is there a way to direct grub-bhyve to use the
> centos:/boot/grub2/grub.cfg file ala some argument -- I scanned the
> source and couldn't find a simple over-ride.
> 
> I'll test/rebuild the suite if you can point me in the general
> direction.
> 
> Thanks,
> 
> dan
> -- 
> Dan Mack
> 
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There CentOS goes being annoying...

grub-bhyve loads the grub config file on ubuntu because it is in the
expected place /boot/grub

but because CentOS 6 has a grub 1 config in /boot/grub they put the grub
2 config in /boot/grub2...

note: you can do: source /boot/grub2/grub.conf
or is it 'script' or something

there is some interactive command in grub-bhyve to load a config file
from inside the VM image.


-- 
Allan Jude

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