On Sun, Jan 04, 2009 at 01:49:49PM -0600, Rob Landley wrote: > > Want to document the granularity issues with flash, while you're at it? > > An inherent problem with using flash as a normal block device is that the > flash erase size is bigger than most filesystem sector sizes. So when you > request a write, it may erase and rewrite the next 64k, 128k, or even a couple > megabytes on the really _big_ ones. > > If you lose power in the middle of that, ext3 won't notice that data in the > "sectors" _after_ the one your were trying to write to got trashed. True enough, although the newer SSD's will have this problem addressed (although at least initially, they are **far** more costly than the el-cheapo 32GB SD cards you can find at the checkout counter at Fry's alongside battery-powered shavers and trashy ipod speakers). I will stress again, that most of this doesn't belong in Documentation/filesystems/ext3.txt, as most of this is *not* ext3-specific. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
