make release and mfsroot

[Devin Teske]

On Dec 11, 2012, at 1:50 PM, Rick Miller wrote:

> Hi Devin,
> 
> On Tue, Dec 11, 2012 at 4:22 PM, Devin Teske <devin.teske at fisglobal.com> wrote:
>> Hi Rick,
>> 
>> If you want, you could follow my approach which is to take the completed
>> mfsroot.gz and use a Makefile to manage the creation of custom mfsroots
>> (keeping the original unmodified, making it simpler to test different
>> iterations).
> 
> Very interesting approach.  I like it and will test it.
> 
> It looks as though I would need to add code to the Makefile if files
> copied in later are greater in size than the space available.  Would
> you agree?

Oh… forgot to mention…

The Makefile doesn't adjust the mfsroot's size.

What I do to solve that problem is patch the release(7) process to make a bigger mfsroot (and thusly has room for more "stuff") -- this allows me to keep the customizations of "what goes in" at a higher level (separate from release(7)) while not having to write a lot of code for resizing the mfsroot.

NOTE: I've actually run into major problems with resizing an mfsroot -- trust me, it's safer to stick with bumping the sectors in the release(7) makefile.

If you're working in the 8.x line, take a look at this patch for bumping the mfsroot size:

http://druidbsd.cvs.sourceforge.net/viewvc/druidbsd/druidbsd/druid83/dep/freebsd/patches/world_patches/release%3A%3AMakefile.patch?revision=1.1&view=markup

Meanwhile, for the 9.x line:

http://druidbsd.cvs.sourceforge.net/viewvc/druidbsd/druidbsd/druid/dep/freebsd/patches/world_patches/release%3A%3AMakefile.sysinstall.patch?revision=1.1&view=markup

NOTE: For your purposes, you'll only need the first hunk (the second hunk is needed for other reasons -- reasons that are documented in the "README" one-level-up in the "patches" directory from the above links).


> 
>> The advantage is that you don't have to re-perform the release(7) process
>> each time you want to make a change to your mfsroot.
> 
> This is a very compelling advantage.
> 

Though, to resize the mfsroot, I still rely on release(7) and the above patches.

I've personally never had a need to go beyond 6000 sectors, but I know the guys at Yahoo have gone much further.
-- 
Devin

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