80 Mb / enough for 7.x? OK to delete /stand/ and /modules/ ?
kostikbel at gmail.com
Sat Aug 2 06:35:43 UTC 2008
On Sat, Aug 02, 2008 at 12:20:39AM -0600, M. Warner Losh wrote:
> In message: <372128.56919.qm at web51502.mail.re2.yahoo.com>
> fbsd2 <fbsd2 at 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?
Actually, on the normal RELENG_7/i386 install (i.e. done by
buildworld/installworld), I get
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/ad0s1a 257998 50422 186938 21% /
/dev/ad0s1e 4129310 143676 3655290 4% /usr
Note that you must supply INSTALL_NODEBUG=yes for installkernel, and
the numbers shown are for WITHOUT_PROFILE=yes.
Amd64 takes ~230Mb for merged / and /usr, this is both due to increased
binary sizes and lib32.
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