22 Oct
2013
22 Oct
'13
5:05 p.m.
Yep Brian,
I have 2 FreeNAS Boxes here that boot from a USB memory stick, but one
has 8GB RAM and the other 4GB RAM.
Poor RPi has either 356MB or 512MB RAM. I have 2 of them and they have
destroyed 2 SD Cards up to now! No good for a 24/7/365 AMPRnet GATEWAY
that has a ull time BBS and an IGATE!
Might be good for emergency work that lasts a few hours of a couple of
days, but no more.
73 de Demetre SV1UY
On Wed, Oct 23, 2013 at 12:49 AM, Brian Kantor <Brian(a)ucsd.edu> wrote:
(Please trim inclusions from previous messages)
_______________________________________________
On Wed, Oct 23, 2013 at 12:40:32AM +0300, Demetre SV1UY wrote:
--
73 de SV1UY
Demetre Ch. Valaris
e-mail: demetre.sv1uy(a)gmail.com
Radio e-mail: sv1uy(a)winlink.org
(to use my radio e-mail put //WL2K in the beginning of the subject line)
http://www.qsl.net/sv1uy
Can we have a system with no writting on the disk
all the time? I'm not sure.
The technique used to do this in embedded systems is often to have the
variable filesystems (/tmp, /var) mounted on a RAMdisk. At boot time
the RAMdisk is created and a stored image restored onto it from the main
flash. At system shutdown time, a new /var image is generated and stored
to flash. Thus flash is only written to when the system is regenerated.
Swap is disabled.
This would be difficult to do with the Pi because it is so limited in
main memory, but it works on larger systems just fine. I've had a FreeBSD
box running this way (with flash, no hard drive) for several years.
- Brian
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