On Friday 01 October 2010 13:28:58 Chris Knadle wrote: > On Friday 01 October 2010 03:18:03 Frank D. wrote: > > On Friday 01 October 2010 00:27:00 Chris Knadle wrote: > > > For USB flash and CF cards I recommend using the ext2 filesystem > > > because it's unjournaled. I've yet to have a CF card using ext2 fail, > > > and I've run some of them for 5 to 7 years. > > > > > > LogFS is also a new filesystem that seems to be meant for USB and CF > > > cards, but it's not considered stable yet. I haven't tested it yet, > > > but I'm looking forward to trying it out when it's a little more > > > mature so that other machines can read it. > > > > I've never seen anything about LogFS before. > > I believe it's new in the Linux kernel as of 2.6.34. It's mostly meant as a > replacement for JFFS2. > > LogFS is still marked as "experimental" and "don't use it for anything > other than testing" as of Linxu 2.6.36-rc6 (the latest -dev). Debian > Unstable has a 'logfs-tools' package that adds 'mkfs.logfs' support -- I > have it installed but haven't yet tried it. > > > Too bad you can't use > > JFFS/UBIFS on top of CF/USB sticks.. > > > > -Frank > > I was told the OLPC boxes use JFFS2 on top of CF cards, and I've seen > instructions of others that have put JFFS2 on CF cards -- but it's not > recommended because JFFS2 is meant to do wear leveling on raw flash chips > mounted on a board, not for CF cards which usually do wear leveling on > their own. Thus if you run JFFS2 on CF cards, wear leveling is done twice > and unpredictable as to what the results will be. Plus JFFS2 is meant to > export raw flash chips as a device, which makes it difficult to do the > same on something that already is a device, like a CF card. > > I've tried to install JFFS2 on a CF card and it's not easy. There's no > 'mkfs.jffs2' program --
correction... there is an 'mkfs.jffs2' program. It's part of 'mtd-utils'. It's just been too long since I've done this to have remembered. -- Chris -- Chris Knadle [email protected] _______________________________________________ Mid-Hudson Valley Linux Users Group http://mhvlug.org http://mhvlug.org/cgi-bin/mailman/listinfo/mhvlug Upcoming Meetings (6pm - 8pm) MHVLS Auditorium Oct 6 - Creating Browser Extensions for Firefox and Chrome Nov 3 - Open Source Hardware: Bugs, Beagles and Beyond Dec 1 - IBM's Open Client Deployment
