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uCdot - FAQ - Dev Boards - Submit Story - Submit FAQ - Submit Dev Board - Topics - Authors - About - Preferences - Older Stuff - Past Polls - Discussions - Journals - Messages Embedded Linux Mailing Lists uClinux-dev (search) Coldfire (search) MTD Microblaze (search) ELUG BDM-devel Blackfin Embedded Linux Sites uClinux.org uClinux-Dist uClibc uClinux Directory LinuxDevices ARMulator uClinux-elf-tools Colilo Kernel Archives H8-uClinux TLDP Microblaze uClinux BDM Tools SkyEye (emulator) LOM SETR live CD Blackfin uClinux Embedded Linux Companies SecureComputing SDCS CodePoet Arcturus Cadenux ARMtwister uClinux.net Xiptech senTec embedded^cl Cwlinux emlix TimeSys eSpark Infotech SSV Embedded Systems Embedded Minds PeerSec Networks Vortech Consulting swissEmbedded Synertronixx Mbedthis Software .vantronix Aday GraceLabs Pengutronix metux ITS Codito Technologies Firmix Software PetaLogix NuDesign Merritt Technologies WindRiver OpenGear Rubico Analog Devices Artila Electronics Vyatta Embest Info&Tech Katalix Systems WorkWare Systems Kdev Intellimetrix Virtual Cogs SYSGO coresystems ExactCODE KOAN EzHomeTech Linux4biz Linkodas Trego EMBEST		Shutting down embedded linux. Michael writes "Hi, I am migrating a custom system (with no operating system per se) to run on a PC/104 system under Linux. It is a standard control application. The first question that struck me was, how can I protect against the user switching off the power supply without correctly shutting down? Ideally, since this is an embedded system with Linux running in the background only, there should be no concept of 'shutting down' to the user. They should be allowed to just switch it off. Is there a way I can get a distribution to read from disk but operate solely in RAM and never write to disk? That would solve all the possible fsck errors that a user would get on boot otherwise. Looking forward to any replies. Thanks Michael" <  Optimising size of samba | dup() under uClinux  >		uCdot Login Nickname: Password: [ Create a new account ] Related Links Linux More on Question Also by davidm
	This discussion has been archived. No new comments can be posted. Shutting down embedded linux. | Login/Create an Account | Top | 1 comments | Search Discussion Threshold: -1: 1 comments 0: 1 comments 1: 1 comments 2: 1 comments 3: 0 comments 4: 0 comments 5: 0 comments Flat Nested No Comments Threaded Oldest First Newest First Highest Scores First Oldest First (Ignore Threads) Newest First (Ignore Threads) The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way. Read-only filesystem (Score:2) by davidm (david_mccullough@securecomputing.com) on Tuesday February 24, @03:20AM (#566) User #2 Info | http://www.securecomputing.com/ | Last Journal: Friday May 11, @09:05AM One of the easiest way to achieve this is to have all your read-write data in a ramdisk (tmpfs) and have your root filesystem mounted read-only, or better still run cramfs or squashfs (compressed RO filesystems). It gets much harder if you want the user to be able to change files. Probably use a small journaled filesystem just for such data.

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