[CentOS] "power outage"-save / like embedded systems

Tue Sep 30 22:53:44 UTC 2014
John R Pierce <pierce at hogranch.com>

On 9/30/2014 3:42 PM, Leon Fauster wrote:
> Am 30.09.2014 um 19:08 schriebm.roth at 5-cent.us:
>> >Leon Fauster wrote:
>>> >>I would like to setup a small system based on CentOS6
>>> >>"power outage"-save as possible. The hardware will be
>>> >>switch off by pulling the plug.
>>> >>
>>> >>To accomplishing this goal, I would mounting some fs parts
>>> >>readonly (e.g. /usr) and thinking about tmpfs for volatile
>>> >>parts (e.g. lock, run under var). Additionally "optimize"
>>> >>some vm.dirty_* kernel- and fs/ext4 parameters. /persistent
>>> >>would be used with jffs2 on a CF card. So far the theory.
>>> >>
>>> >>Does anyone have some experience with such type of systems?
>>> >>Any pointer to pitfalls are welcome.
>>> >>
>> >Put it on a UPS, and install apcupsd.
> Sure, for servers but I am talking about a small
> 9W-power-consumption appliance that have this
> requirement:-)

I don't think CentOS is the appropriate distribution for that sort of 
system.   Does it even have jffs2 support?

a uClinux/busybox based system would be much more appropriate. maybe 
start with DSL, http://www.damnsmalllinux.org/ or tinycore, 

john r pierce                                      37N 122W
somewhere on the middle of the left coast