Date: Mon, 7 Sep 2015 16:19:48 -0600 From: Warner Losh <imp@bsdimp.com> To: Tim Kientzle <tim@kientzle.com> Cc: freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: bhyve/arm6/amd64 query Message-ID: <CANCZdfpgZDxbgxbvrNhwJq8Ezw04mA4rQmY1H2sD17LC04LdQQ@mail.gmail.com> In-Reply-To: <023E3382-6F0A-4EDA-9D9A-E0F60AB58FA6@kientzle.com> References: <20150907090541.GA54788@potato.growveg.org> <59F1B4A5-CD93-46D2-83D3-F0790CA2FA8E@gmail.com> <20150907150539.GA2959@potato.growveg.org> <023E3382-6F0A-4EDA-9D9A-E0F60AB58FA6@kientzle.com>
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On Mon, Sep 7, 2015 at 12:15 PM, Tim Kientzle <tim@kientzle.com> wrote: > > > On Sep 7, 2015, at 8:05 AM, John <freebsd-lists@potato.growveg.org> > wrote: > > > > On Mon, Sep 07, 2015 at 03:33:24PM +0300, Jukka Ukkonen wrote: > >> AFAIK no. Bhyve is a plain hardware type of container, > >> not a hardware emulator like qemu, nor a jail type > >> container. > >> You should be looking for qemu or something similar. > >> Bhyve can be used for hosting other operating systems > >> on the same type of HW as the vanilla system. > > > > OK, thanks. You've saved me the work of trying then failing terribly :D > > > > It doesn't have to be hosted. The reason for me asking is, basically can > I take > > the image and (as an image, not as an OS) can it be updated/recompiled > on different, > > higher spec hardware, then returned to the Pi? > > > > Hopefully I'm describing this right. You know on say amd64, an arm6 > system can be > > cross-compiled as an installable system. That system is running. I have > updated it > > (while installed on RPI2 hardware) and installed my configs, it works > great. > > Now I can unplug the microSD, dd it to a .img file, on another system, > to archive it. > > What I'm asking is, can I take that image while it's on the other > system, and > > interact with it to the extent that I can update/upgrade it? > > In theory, yes. If you could figure this out there are lots of people who > might be interested in it. > > The basic idea: cross-compile a new FreeBSD system, mount the arm6 image > and then cross-install onto it to update it. This is very similar to the > process Crochet uses for building a new image, except that instead of > starting with a new blank system image you would instead mount your > existing image and install over it. > > Roughly speaking, the process should be something like the following > (you'll need to do some research to fill in the many details): > > $ cd /usr/src > $ make TARGET_ARCH=arm6 buildworld > $ make TARGET_ARCH=arm6 KERNCONF=RPI2 buildkernel > $ # ... mount the img via md loopback > $ mergemaster <options to target the image instead of the local > filesystem> > $ make TARGET_ARCH=arm6 KERNCONF=RPI2 DESTDIR=<img> installkernel > $ make TARGET_ARCH=arm6 KERNCONF=RPI2 DESTDIR=<img> installworld > $ # ... unmount the image s/arm6/armv6/g but otherwise that looks good. Warner
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