On 03/08/2013 12:08 PM, Chris Ball wrote: > Hi, > > 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:-) FWIW, my CID is 45010053454d31364790711c665f3e00, i.e. manufacturer ID 0x45, device name SEM16G. -- 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
