Re: [gentoo-user] installing Gentoo in a xen VM

[lee]

Rich Freeman <rich0@g.o> writes:

> On Thu, Dec 4, 2014 at 3:39 PM, lee <lee@××××××××.de> wrote:
>> Rich Freeman <rich0@g.o> writes:
>>
>>> On Thu, Dec 4, 2014 at 1:11 PM, lee <lee@××××××××.de> wrote:
>>>> Tomas Mozes <tomas.mozes@××××.sk> writes:
>>>>>
>>>>> The kernel is not in stage3, you have to compile it yourself (or
>>>>> download from somewhere). When you have the kernel image binary, the
>>>>> xen configuration for the host can be simple as:
>>>>
>>>> Compile it with what?  Are the sources in stage3, or downloaded so that
>>>> I can compile a suitable Gentoo kernel within the chroot?
>>>
>>> If you've never installed Gentoo anywhere I wouldn't suggest doing it
>>> for the first time under Xen.
>>>
>>> Gentoo stage3s include neither a binary kernel nor the sources.  See:
>>> https://www.gentoo.org/doc/en/handbook/handbook-amd64.xml?part=1&chap=7
>>
>> That's confusing ...  I would think that I can create the file system on
>> the LV and extract the stage3 archive, then chroot into it.  From there,
>> I'd have to 'emerge gentoo-sources' and to compile a kernel.
>>
>> Isn't that easier or the same as booting on bare metal into some life
>> system and doing these things from there?
>>
>
> When you boot a CD on bare metal all you're doing is creating the file
> system, extracting the archive, and chrooting into it.  So the outcome
> is the same either way.
>
> If your xen guest is going to run on a regular LV you certainly can
> just mount it on the host and chroot into it.  That is exactly how I'd
> go about it.

Yes, I've already created a LV for it (along with others I'm going to
need).  Then I got stuck because I wanted to create an xfs file system
and found that I hadn't installed a package required for that and
couldn't install it because there was some problem with downloading
package lists which they only fixed some time later ...

BTW, can I use xfs for the VM, or will it be difficult to get the VM
booted from xfs?

> Once you're in the chroot then you should install the kernel/etc per
> the handbook.

So there isn't really an advantage to use HVM ... it's even easier
because I can access the LV from dom0.

> Of course, you have to make sure that the config for
> the kernel supports running as a guest under xen.

It's been a few years since the last time I compiled a kernel.  I'm
looking forward to it :)


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