RE: Reply: Mini-Freebsd system on ram, to reduce noise?
- From: "Murray Taylor" <MTaylor@xxxxxxxxxxxxxxxx>
- Date: Mon, 27 Nov 2006 09:37:12 +1100
There are also builds for FreeBSD-5 and Freebsd-6
-5
http://www.ultradesic.com/index.php?section=86
-6
http://www.ultradesic.com/index.php?section=125
I use minibsd (FreeBSD-4) very successfully as a network monitor
in 32M RAM, booting from a 32M CF card, with a 66MHz processor.
There are two partitions on the card -
the root (r/o) and /config (r/o on boot, r/w during
rc.shutdown to save my configs and scripts)
Runs vi, tcpdump, net-snmp....
No moving parts (HDs, Fans, nada..)
mjt
Murray Taylor
Special Projects Engineer
Bytecraft Systems
--
"Any intelligent fool can make things bigger and more complex... It
takes a
touch of genius - and a lot of courage to move in the opposite
direction."
--Albert Einstein
-----Original Message--------------------------------------------------------------------
From: owner-freebsd-questions@xxxxxxxxxxx
[mailto:owner-freebsd-questions@xxxxxxxxxxx] On Behalf Of Lars Udo
Sent: Monday, 27 November 2006 6:13 AM
To: freebsd-questions@xxxxxxxxxxx
Subject: Reply: Mini-Freebsd system on ram, to reduce noise?
Hello, fellow FreeBSD-users. I'm planning to build MiniBSD
(from freebsd)
with, these instructions: https://neon1.net/misc/minibsd.html
i'v red it few times and came to realize, that if i could get that
small FreeBSD why wouldnt i run it in RAM?
I have Intel 333 Mhz / 256 sdram / 10Gb hd.. and few nics.
i could boot up system and then move it into ram, lets say
that i'd create
128 Mb size of memorydisk in ram.
All data will be wiped during reboot, but i'll keep the
original image on
harddisk, which will shutdown until all system-files are
moved into RAM..
Is this anyway possible?
It would reduce noise-level here in my livingroom, so thats
all i need,
beside NAT/Firewall :)
all suggestions are considered, but monowall or picobsd are
no options,
because i need to learn it myself rather than "go'n buy & setup"
how do i create memorybased filesystem?
----------------------------------------
mdconfig -t malloc -s 128m -u 5
newfs -U /dev/md5
mount /dev/md5 /
dd if=/mnt/ad0 of=/
umount /mnt/ad0
(drop the harddisk)
--------------------------------------
something like that?
thanks, for reading :)
Greetings
Lars
-----------------------------------------------
| Anonymous said...
| so what.
| why is glory in the real world better than the glory in a fake one?
| evolution made us to survive, not to live.
-----------------------------------------------------
1...Firewall
Everything I have read tends to point to "roll your own" firewall as
a better alternative. In other words, learn to use it.
I know it's difficult, but it will be worth it. The
"go'n buy & setup" sound like M$-plug-and-play. It would create a
generic firewall. It may or may-not full protect your system. I would
recommend reading
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/fire
walls.html
as well as reading the freebsd questions mail archives.
2...The following quote:
"which will shutdown until all system-files are moved into RAM"
maybe you ment to say move out of ram before shutdown.
If you have a "UPS", then good, otherwise consider getting one. You
could end up with a corrupt file system.
3...Do you have a cd-rom drive? You could run Freesbie:
www.freesbie.org
--
Alexander
FreeBSD 6.0-RELEASE i386
-----
Hello
Sorry, if this reply goes wrong.. but i meant, that i am not
novice user..
i'v been reading this
http://www.ultradesic.com/index.php?section=125tutorial now, and it
applies better on Freebsd
6.0, so i have good startup.. my goals are following:
I'm trying to make MiniBSD from FreeBSD 6.0 that would fit on
less than 128
Mb of ram, so i could run whole system in ram... i wouldnt
need to run HD
either cd-rom 24/7 to keep noise... and i could save some electricity
Ram is fast and silent to run minibsd in it.. is there any
disadvantage?
- Shutting down, clears ram.. but if i have static image on
HD that never
corrupts.
- on every boot, i boot from HD and while booting i'd make a
memory based
disk in ram, and copy that minibsd of mine into ram.. as long
as computer is
on.. that minibsd has all the firewall-rules & nat etc..
and after, i have copied that minibsd image into the ram..
i could "umount /mnt/ad2; atacontrol detatch ad2"
this is almost as same setup than livecd. but cd-rom drive is
big and slow.
damn, i cant explain this straight and easy...
i want to make a setup like livecd.. and copy whole system in
to ram.. where
it is on memorydisk and umount all harddrives and
cd-rom-drives.. but when
needed, i can bring my HD up for some changes or just to save
some data that
i'd like to keep safe.. (harddisk are hard to crash when they
dont spin :)
((yes, its not cool to keep personal data on firewall-pc i
know.. but i
hope you get the idea ))
i have now fully working firewall & nat & altq and i have
used netbsd &
freebsd for several years.. i might look like stupid if i
have used so many
years of these systems.. but the reason is that i have a job
& girl & life
.. so i dont have time to spend 24/7 on researching how could i get it
working.. so i ask for you people.. just a little push, i'm
not expecting
100% working advices.. just that is there any cons & pros and
anything that
comes to your mind that would help me? :)
damn.. still didnt make any sense..
bootprosess, would be something like:
1. boot kernel from harddisk..
2. while booting, create memorybased disk that is 50% of my
ram (128Mb)
3. apply all firewall rules & bring up sshd
4. mount memorydisk as / (root)
5. dd if=minibsd.image of=/
6. atacontrol detatch 'harddisk'
and the result would be that i have everything running in RAM
and harddisk
is energysaving state.. like 'poweroff' or idle or something..
and if i need to make changes.. i log in as root and attach
harddisk, and
get it up and running.. and mount it as under /mnt/ad2 with
write flags so
that i can changes rules and they will be applied on next reboot.
(my girl uses to shutdown all computers at nighttime)
now i have acpi-button, and it shuts down properly.. but i
would like to
shut down harddisk at daytimes if i dont need to use it.. and
if i need, i
can bring it up..
did anyone get any sense out my eplainins?
Greetings
Lars
--
Anonymous said...
so what.
why is glory in the real world better than the glory in a fake one?
evolution made us to survive, not to live.
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