On 24 June 2015 at 12:46, Duncan <1i5t5.duncan@xxxxxxx> wrote: > Patrik Lundquist posted on Wed, 24 Jun 2015 10:28:09 +0200 as excerpted: > > AFAIK, it's set huge to defrag everything, It's set to 256K by default. > Assuming "set a huge -t to defrag to the maximum extent possible" is > correct, that means -t 1G should be exactly as effective as -t 1T... 1G is actually more effective because 1T overflows the uint32 extent_thresh field, so 1T, 0, and 256K are currently the same. 3G is the largest value that works with -t as expected (disregarding the man page) and is easy to type. > But btrfs or ext4, 31 extents ideal or a single extent ideal, 150 extents > still indicates at least some remaining fragmentation. I gave it another shot but I've now got 154 extents instead. :-) -- 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
