freebsd stable - Jun 2008 - 80 Mb / enough for 7.x? OK to delete /stand/ and /modules/ ?

Greetings list,

   Given recent EOL announcements, I'm trying to upgrade an ancient machine
from 5.5 to 7. It has 80 Mb total in the root partition, /home/, /var/, /usr/,
and /tmp/ on other partitions, and NFS mounts /usr/src, /usr/obj, and /usr/ports
from a slightly newer/faster box.  I've seen

http://www.freebsd.org/releases/7.0R/relnotes.html   and
http://marc.info/?l=freebsd-stable&m=121278826119286&w=2

which seem to suggest that even with INSTALL_NODEBUG during buildkernel, 7 might
not fit in an 80 Mb /.  Must I partition a new disk to give more space to /, or
can I find more space by deleting /stand/, /modules/, and possibly /rescue/ to
shoehorn a custom 7.x kernel in the available space?  TIA

Alex

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On Thursday 12 June 2008, fbsd2 wrote:
> Greetings list,
>
>    Given recent EOL announcements, I'm trying to upgrade an ancient
> machine from 5.5 to 7. It has 80 Mb total in the root partition,
> /home/, /var/, /usr/, and /tmp/ on other partitions, and NFS mounts
> /usr/src, /usr/obj, and /usr/ports from a slightly newer/faster
> box.  I've seen
>
> http://www.freebsd.org/releases/7.0R/relnotes.html   and
> http://marc.info/?l=freebsd-stable&m=121278826119286&w=2
>
> which seem to suggest that even with INSTALL_NODEBUG during
> buildkernel, 7 might not fit in an 80 Mb /.  Must I partition a new
> disk to give more space to /, or can I find more space by deleting
> /stand/, /modules/, and possibly /rescue/ to shoehorn a custom 7.x
> kernel in the available space?  TIA
It should fit, though you may have issues with kernel.old pushing you 
over the limit.

-- 
Anish Mistry
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2008/6/12 fbsd2 <fbsd2@yahoo.com>:
> Greetings list,
>
>   Given recent EOL announcements, I'm trying to upgrade an ancient
machine from 5.5 to 7. It has 80 Mb total in the root partition, /home/, /var/,
/usr/, and /tmp/ on other partitions, and NFS mounts /usr/src, /usr/obj, and
/usr/ports from a slightly newer/faster box.  I've seen
>
> http://www.freebsd.org/releases/7.0R/relnotes.html   and
> http://marc.info/?l=freebsd-stable&m=121278826119286&w=2
>
> which seem to suggest that even with INSTALL_NODEBUG during buildkernel, 7
might not fit in an 80 Mb /.  Must I partition a new disk to give more space to
/, or can I find more space by deleting /stand/, /modules/, and possibly
/rescue/ to shoehorn a custom 7.x kernel in the available space?  TIA
>
If you know you do not need the modules, by all means, to do away with them
is space back to you.

If you are building from source, you can use the:
MODULES_OVERRIDEvariable in /etc/make.conf

When you are at the
# make installworld
stage you can likely delete /stand (I believe it is not used on >=6.x)

(Though I am not sitting at the machine now) I believe that / on my 7.x box is
about 46M.

-- 
--

On Thu, 12 Jun 2008, fbsd2 wrote:
>   Given recent EOL announcements, I'm trying to upgrade an ancient
machine
> from 5.5 to 7. It has 80 Mb total in the root partition, /home/, /var/, 
> /usr/, and /tmp/ on other partitions, and NFS mounts /usr/src, /usr/obj,
and
> /usr/ports from a slightly newer/faster box.  I've seen
>
> http://www.freebsd.org/releases/7.0R/relnotes.html and 
> http://marc.info/?l=freebsd-stable&m=121278826119286&w=2
>
> which seem to suggest that even with INSTALL_NODEBUG during buildkernel, 7 
> might not fit in an 80 Mb /.  Must I partition a new disk to give more
space
> to /, or can I find more space by deleting /stand/, /modules/, and possibly
> /rescue/ to shoehorn a custom 7.x kernel in the available space?  TIA
My Kerberos server runs 7-STABLE and has a 93M root with 25M free.  It's a
bit
tight -- I have to remember to disable the installation of debugging symbols 
for the kernel and modules, for example.  However, it does work fine, and 
that's even with modules installed.  The bigger problem is my old /var now 
that I have audit enabled.

Robert N M Watson
Computer Laboratory
University of Cambridge

In message: <372128.56919.qm@web51502.mail.re2.yahoo.com>
            fbsd2 <fbsd2@yahoo.com> writes:
: Greetings list,
: 
:    Given recent EOL announcements, I'm trying to upgrade an ancient
machine from 5.5 to 7. It has 80 Mb total in the root partition, /home/, /var/,
/usr/, and /tmp/ on other partitions, and NFS mounts /usr/src, /usr/obj, and
/usr/ports from a slightly newer/faster box.  I've seen
: 
: http://www.freebsd.org/releases/7.0R/relnotes.html   and
: http://marc.info/?l=freebsd-stable&m=121278826119286&w=2
: 
: which seem to suggest that even with INSTALL_NODEBUG during buildkernel, 7
might not fit in an 80 Mb /.  Must I partition a new disk to give more space to
/, or can I find more space by deleting /stand/, /modules/, and possibly
/rescue/ to shoehorn a custom 7.x kernel in the available space?  TIA

Doesn't look like anybody has answered this question...

80MB is plenty, even for 7.x.  However, you'll have to use nanobsd or
tinybsd to get that small.  You'll likely been unable to do a 'make
installworld' to get this size.  You'll have to create an image and
push it over to this machine somehow.

In the 3.x time frame, I had FreeBSD booting with the standard scripts
in 13MB without compression.  4.x, 5.x and 6.x bloated these binaries
to about 18MB (a few more were added).  I haven't built a system based
on 7.x with this system due to a change in employment, but expect that
it wouldn't be much larger than 20MB for these same files.  Some
careful honing could reduce that a little, but maybe not a lot.
Typical embedded systems that I shipped were on the order of 24MB
without X11 and 32-60MB for those with an X11 server.

What's this box used for?

Warner