Re: LVM and Xen given module load issue

[Darren Spruell <phatbuckett%gmail.com@localhost>]

On Fri, Feb 14, 2014 at 4:37 PM, Manuel Bouyer 
<bouyer%antioche.eu.org@localhost> wrote:
> On Fri, Feb 14, 2014 at 12:42:47PM -0700, Darren Spruell wrote:
>> On 02/14/2014 12:31 PM, Michael L. Hitch wrote:
>> > On Fri, 14 Feb 2014, Darren Spruell wrote:
>> >
>> >> Wanted to inquire what the recommended process is for setting up a Xen
>> >> host system with support for LVM (and dm kernel driver/etc.) given
>> >> that module loading does not function with the Xen Dom0 kernel. The
>> >> only option I see is to modify the kernel to include 'pseudo-device
>> >> dm' but I'm not clear on ability to do this in the Xen kernel.
>> >
>> >   I think this was added over 3 years ago, and should be present in the
>> > NetBSD-6 releases.
>>
>> Yes, however:
>>
>> https://www.netbsd.org/docs/guide/en/chap-lvm.html
>>
>> Xen Dom0 kernels don't load modules (ABI differences) so the (dm) module
>> won't load.
>
> No, but I guess you can still build it as part of the kernel instead
> as a module.
>
>> Also userland tools are not built by default.
>
> I have a 'lvm' command on my netbsd-6 box, so I guess it's built by default
> now.

So much fail on my part.

# which lvm
/sbin/lvm

/stand/amd64/6.1/modules/dm/dm.kmod

Confused at the section in https://www.netbsd.org/docs/guide/en/chap-lvm.html:

-----
17.4. Configure LVM on a NetBSD system

For using LVM you have to install lvm2tools and libdevmapper to NetBSD
system. These tools and libraries are not enabled as default.

To enable the build of LVM tools, set "MKLVM=yes" in the /etc/mk.conf
or "MAKECONF" file.
-----

...I take it that this is no longer required in current release. For
my needs I think I just need to compile a custom kernel and done.

Thanks for the cluebat,

-- 
Darren Spruell
phatbuckett%gmail.com@localhost