On 9/19/17 10:35 AM, Timofey Titovets wrote: > Stupid question: > Does btrfs use crc32 for error correction? > If no, why? > > (AFAIK if using CRC that possible to fix 1 bit flip) > > P.S. I try check that (i create image, create text file, flip bit, try > read and btrfs show IO-error) > > Thanks!
I wasn't aware that crc32 could (in general) be used for single bit correction; I've read up on that, and it seems pretty cool. However, I don't think that the generator polynomial used in crc32c /can/ be used for error correction. I just skimmed some reading, but that seems to be the case if I understand it correctly. -Eric -- 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
