Precise again here. Some very very odd, and fairly useless, behaviour from e4defrag:
[292194/339739]/home/user/.bitcoin/blocks/blk00349.dat: 100% extents: 7 -> 3289 [ OK ] $ sudo e4defrag -c /home/user/.bitcoin/blocks/blk00349.dat <File> now/best size/ext /home/user/.bitcoin/blocks/blk00349.dat 3289/1 24 KB Total/best extents 3289/1 Average size per extent 24 KB Fragmentation score 83 [0-30 no problem: 31-55 a little bit fragmented: 56- needs defrag] This file (/home/user/.bitcoin/blocks/blk00349.dat) needs defragmentation. Done. $ e4defrag -v /home/user/.bitcoin/blocks/blk00349.dat ext4 defragmentation for /home/user/.bitcoin/blocks/blk00349.dat [1/1]/home/user/.bitcoin/blocks/blk00349.dat: 100% extents: 3289 -> 3289 [ OK ] Success: [1/1] It turns out that this doesn't really make any sense anyway: $ mv blk00349.dat blk00349.dat~ $ cp blk00349.dat~ blk00349.dat $ sudo e4defrag -c blk00349.dat <File> now/best size/ext blk00349.dat 1/1 81920 KB Total/best extents 1/1 Average size per extent 81920 KB Fragmentation score 0 [0-30 no problem: 31-55 a little bit fragmented: 56- needs defrag] This file (blk00349.dat) does not need defragmentation. Done. $ e4defrag -v blk00349.dat ext4 defragmentation for blk00349.dat [1/1]blk00349.dat: 100% extents: 1 -> 1 [ OK ] Success: [1/1] $ ll blk00349.dat* -rw------- 1 user user 80M Oct 8 23:34 blk00349.dat -rw------- 1 user user 80M Oct 8 18:25 blk00349.dat~ Unless this is a filesystem error? There haven't been any other errors on this filesystem so far.... $ e4defrag blk00349.dat~ ext4 defragmentation for blk00349.dat~ [1/1]blk00349.dat~: 100% [ OK ] Success: [1/1] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/911529 Title: e4defrag doesn't make an optimized defragmentation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/911529/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs