Hi George, > I really suspect a lot of bad block issues can be avoided by monitoring > SMART data. SMART is working very well for me with btrfs formatted drives. > SMART will detect when sectors silently fail and as those failures > accumulate, SMART will warn in an obvious way that the drive in question is > at end of life. So I think the whole bad block issue should ideally be > handled at a lower level than filesystem with modern hard drives.
At least my original request was about cheap flash media, where you don't have the luxury that you can "trust" the hardware behaving properly. In fact, it might be benefitial for a SD card to not report ECC errors - most likely the user won't notice a small glitch playing back music - but he definitively will when the smartphone reports read errors and stopping playback which will cause that card to be RMAd. Also, wouldn't your argument be also valid for checksums - why checksum in software, when in theory the drive + controllers should do it anyway ;) Regards, Clemens -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
