Date: Mon, 11 Jul 2016 09:00:09 -0500 From: Karl Denninger <karl@denninger.net> To: freebsd-arm@freebsd.org Subject: Re: 11-Alpha to 11-Beta rewrite card or buildworld Message-ID: <dc6b08fa-a350-acb8-04cc-afb74e8fceb4@denninger.net> In-Reply-To: <C3716178-F240-4D92-8480-AAC7FF563CA5@gromit.dlib.vt.edu> References: <CABMOuVdW9SFFJineYtv6hvYypgRwBP9dEn-OKvb9xL2_XAXhvQ@mail.gmail.com> <CABMOuVeXnKrF52L-Xo1RYjdYhN8eoWOo8nLShxHn-TteAnyObg@mail.gmail.com> <CABMOuVd2z-3Do98C0kbDPXowvvP7-j=XMZ-x3ED=A37w=zPkYA@mail.gmail.com> <CABMOuVc%2BiHL4GLw=4BDE=%2B1ZKfw3wzxQRyJrO5OdNbw4ets-Xw@mail.gmail.com> <4876c9e05d5.30c7197a@mail.schwarzes.net> <CABMOuVfEefQ8BAxtUNrAUwTnwkq-4dN4T=X-aOWutgUec-p7Rw@mail.gmail.com> <20160711050802.4743251.48194.8248@gmail.com> <271F1F0A-B8B5-4A13-8BB8-3C5323622CDD@gromit.dlib.vt.edu> <cf3d7f5f-f9d4-49b5-d1f7-1664b09c5c45@denninger.net> <C3716178-F240-4D92-8480-AAC7FF563CA5@gromit.dlib.vt.edu>
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On 7/11/2016 08:54, Paul Mather wrote:
> On Jul 11, 2016, at 9:24 AM, Karl Denninger <karl@denninger.net> wrote:=
>
>> On 7/11/2016 07:51, Paul Mather wrote:
>>> On Jul 11, 2016, at 1:08 AM, Russell Haley <russ.haley@gmail.com> wro=
te:
>>>
>>>> Sorry about the top post.=20
>>>>
>>>> If your not trying to learn about the build process and=E2=80=8E you=
don't have a custom build requirement, why not use a prebuilt image move=
on to validating the running OS instead of repeating what the build serv=
er does?
>>>>
>>>> I would think there is more value in finding anomalies in your favor=
ite applications. From my understanding there have been big changes to th=
e fundamentals of the OS (i.e hard float, compiler upgrades, byte alignme=
nts etc).
>>> Speaking for myself, I just find the build{world,kernel} + install{ke=
rnel,world} + mergemaster sequence of updating the system a much more ing=
rained and normal method of doing things. It seems "natural" to me to up=
date my FreeBSD/arm systems the same way I update my FreeBSD/amd64 system=
s.
>>>
>>> Besides, if I overwrote my SD card with a new install image, I'd lose=
all my settings (e.g., users, custom /usr/local/etc/pkg/repos/ repositor=
y, swap partition on SD card, /etc/fstab changes to make /tmp bigger[*], =
etc.). It's more natural for me to use the standard update technique tha=
n redo those changes from scratch each time I update the OS. (I'm using =
SaltStack to configure more and more, but even getting a minion set up me=
ans it's easier to update the standard way than start with a fresh instal=
l image and have to re-bootstrap SaltStack.)
>>>
>>> Cheers,
>>>
>>> Paul.
>>>
>> The reason I do the "crossbuild" + "rsync" thing is that it gives me t=
he
>> ability to do the buildworld/buildkernel/installworld/installkernel
>> paradigm to a "holding directory" on a very fast machine, then rsync t=
he
>> results. (Mounting the holding directory via NFS works as well but I
>> see no real advantage to that over using rsync)
>>
>> That means I don't lose anything I did to the machine after install
>> (e.g. users, etc) and in addition I can put local patches on the sourc=
e
>> tree if required, but I still get a reasonable build time.
> I've successfully done cross building on a fast FreeBSD/amd64 machine b=
ut have always had to move the SD card physically to that machine to do t=
he install{kernel,world} + mergemaster phase. The reason for this is whe=
n I tried rsyncing to copy to the FreeBSD/arm system the rsync applicatio=
n would not handle file flags (noschg, etc.) properly and rsyncing would =
fail, even though I'd built it with the file flags patch enabled. Going =
by what you say above, that appears to work properly now, so I may re-try=
that.
>
> I've also not had luck cross building on a fast FreeBSD/amd64 system an=
d then trying to install on FreeBSD/arm by NFS mounting the src and obj c=
rossbuild directories and doing an install{kernel,world} + mergemaster on=
the FreeBSD/arm system. When I posted about this I believe the reason i=
s that the build systems gets confused about the change in build and inst=
all paths. There may also be something about the build/install toolchain=
, too. I forget. I just remember it didn't seem to work for me when I t=
ried it and asked about it on this mailing list. :-)
>
> If someone were to do a little "fastest way to update your FreeBSD/arm =
OS without having to move the SD card physically to the build system" HOW=
TO, that would be great. ;-)
>
> Cheers,
>
> Paul.
You do need to tell rsync to handle the schg flags -- for example:
rsync -av --force-schange --fileflags -I -e 'ssh -p
<port-where-listening>' 'karl@newfs:/pics/CrossBuild/nfsroot/' /
-p <port-where-listening> is for those who run sshd on a non-standard
port (which I do to reduce the number of crazies trying to connect to my
boxes and thus the noise in the nightly security reports.)
--=20
Karl Denninger
karl@denninger.net <mailto:karl@denninger.net>
/The Market Ticker/
/[S/MIME encrypted email preferred]/
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