Hi, On Fri, Mar 08 2013, Stephen Warren wrote: >> On Fri, Mar 08 2013, Theodore Ts'o wrote: >>> I hate to suggest this, but there's so many crappy devices out there >>> that I'm wondering if we need to figure out some way of maintaining a >>> black list of devices that don't handle discard properly. >> >> Yes, we already do that in the MMC layer. See e.g.: >> >> http://git.kernel.org/cgit/linux/kernel/git/cjb/mmc.git/commit/?id=3550ccdb9d8d350e526b809bf3dd92b550a74fe1 >> ("mmc: card: Skip secure erase on MoviNAND; causes unrecoverable corruption.") > > Unrecoverable sounds scary. Does that just mean data corruption, or a > permanently broken device? mk2e2fs -K followed by e2fsck and mounting > luckily seems to still work OK for me:-) Incredibly, it appears to cause a permanently broken device. The URLs in the commit message have some more details. - Chris. -- Chris Ball <cjb@xxxxxxxxxx> <http://printf.net/> One Laptop Per Child -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
