On 10/20/2015 15:59 -0400, Austin S Hemmelgarn wrote: >> ......... >> With a 32-bit checksum and a 4k block (the math is easier with >> smaller numbers), that's 4128 bits, which means that a random >> single bit error will have a approximately 0.24% chance of >> occurring in a given bit, which translates to an approximately >> 7.75% chance that it will occur in one of the checksum bits. For a >> 16k block it's smaller of course (around 1.8% I think, but that's >> just a guess), but it's still sufficiently statistically likely >> that it should be considered. >> ......... Last I checked, a 4 kilo-BYTE block consisted of 32768 BITs... So the percentages should in fact be considerably smaller than that. -- twalberg@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
