Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 11 Sep 2017 18:13:21 +0200
From:      Polytropon <freebsd@edvax.de>
To:        tyler@tysdomain.com
Cc:        Anton Yuzhaninov <citrin+bsd@citrin.ru>, freebsd-questions@freebsd.org
Subject:   Re: help with condensing bsd
Message-ID:  <20170911181321.3d892b7b.freebsd@edvax.de>
In-Reply-To: <27aa284a-2de7-ead6-ecb8-3ca73f133d66@tysdomain.com>
References:  <b591f6b4-0a03-3db2-b823-c7df349b636e@tysdomain.com> <8e90abb6-79b0-5f2a-8c1a-4126a663f0ee@citrin.ru> <27aa284a-2de7-ead6-ecb8-3ca73f133d66@tysdomain.com>

Next in thread | Previous in thread | Raw E-Mail | Index | Archive | Help
On Mon, 11 Sep 2017 09:59:49 -0400, Littlefield, Tyler wrote:
> On 9/8/2017 3:03 PM, Anton Yuzhaninov wrote:
> > On 09/08/17 12:04, Littlefield, Tyler wrote:
> >> I wish to create a smaller BSD as I have a vps with a minimal amount of
> >> space.
> > 1. Reducing kernel size.
> >
> > create custom config - add to it all you need (drivers, geom/netgraph
> > modules e. t. c.) and add line
> > makeoptions     NO_MODULES=yes
> >
> > only kernel will be build without modules.
> > Kernel can be compressed using gzip -9
> >
> > 2. World.
> >
> > Simple way - just disable optional stuff via src.conf
> > Read man src.conf and add knobs like
> > WITHOUT_ACCT=yes
> > WITHOUT_ACPI=yes
> > WITHOUT_AMD=yes
> > e.t.c.
> > to you src.conf
> >
> > Not all can be switched off via src.conf, but if you not building image
> > for tiny embedded system a few extra Mb probably doesn't matter.
> >
> >> I know that I can buildworld and cut a lot of things out (does
> >> anyone have a good example from where to start)?
> >> My question is this: Once I buildworld and buildkernel, how do I package
> >> these up? I have a few systems that need this new buildworld and
> >> buildkernel, and i also want to replace the base iocage jail.
> > Different options are possible.
> >
> > I use this way:
> >
> > On build host I run script make-release.sh [1]
> > result of this script: files base.txz kernel.txz e. t. c.
> >
> > /usr/src/release/release.sh can be used instead, but for me it was more
> > easy to write own script than customize release.sh.
> >
> > To upgrade OS on VPS I use shell script [2] which fetches this files and
> > extracts them using tar. To upgrade files in /etc I currently use
> > etcupdate (because mergemaster needs /usr/src).
> >
> > If you already have OS installed in this VPS you can install you custom
> > build (and copy /etc/src.conf used for this build) and then run
> > make delete-old && make delete-old-libs
> > to delete switched off parts (but you will need /usr/src for this task).
> 
> 
> To bad there's not a way to do this without /usr/src.

Correct. All the make targets depend on various files inside
that subtree to determine the correct actions.



> If you just extract this new system over your current system,
> how does that get rid of things you removed?

It doesn't. The idea is to extract it to a freshly initialized
file system.






-- 
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...



Want to link to this message? Use this URL: <http://docs.FreeBSD.org/cgi/mid.cgi?20170911181321.3d892b7b.freebsd>