On Tue, Oct 13, 2009 at 08:57:08 -0300, Douglas Lopes Pereira wrote: > Hi guys, > > According to Martin's we should format our USB stick or SD card using > EXT2 file system. I was wondering if I can use UBIFS instead (I don't > see any reasons not use it) but first I would like to count on yours > expertise. > > Is there any advantage on using EXT2 instead of UBIFS? > > Is UBIFS more appropriate for flash memory like USB sticks and SD > cards? Will UBIFS balance IO operations to preserve my SD card (I > mean, will it write my files in all the 'extension' of my SD and not > in only one point)?
Although I have no practical experience with either UBIFS or JFFS2, from what I've read on http://www.linux-mtd.infradead.org/doc/ubifs.html#L_raw_vs_ftl it would appear impossible to use UBIFS on a regular USB or SD card drive, as they have a hardware mapping layer that hides the NAND flash characteristics behind a block level emulation layer. So I guess sticking with EXT2 is sound advice. (Although I recall reading somewhere that some USB stick vendors were suspected of optimizing their wear leveling algorithms for FAT filesystems) -- To UNSUBSCRIBE, email to debian-arm-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
