commit f0b930f314d1ccc165af3f9fe5f2512343fc9482 Author: Tomohiro Kusumi <kusumi.tomoh...@gmail.com> Date: Tue Mar 10 20:09:36 2015 +0900
sys/vfs/hammer: Properly set mirror_tid on root node split - Set elms[0].internal.mirror_tid of the new root node after root split. - Without this commit elms[0].internal.mirror_tid of the new root node is 0 which is not appropriate given that its children have non-zero mirror_tid. - Submit #2801 - Following hammer show results shows difference. /* the root node right after root split without this commit */ NODE 8000000020801000 cnt=02 p=0000000000000000 type=I depth=0 mirror 00000001000087a0 fill=z8:65=1% { G------ ELM 0 L lo=00000000 obj=8000000000000000 rt=00 key=8000000000000000 ot=00 d tids 0000000000000001:0000000000000001 suboff=8000000020800000 mirror 0000000000000000 G------ ELM 1 L lo=00000001 obj=0000000080000209 rt=01 key=0000000000000000 ot=00 tids 0000000100008420:0000000000000000 suboff=8000000020802000 mirror 00000001000087a0 G------ RBN 2 ? lo=ffffffff obj=7fffffffffffffff rt=ffff key=7fffffffffffffff ot=00 tids ffffffffffffffff:0000000000000000 suboff=0000000000000000 mirror 0000000000000000 } BM NODE 8000000020800000 cnt=32 p=8000000020801000 type=L depth=1 mirror 00000001000087a0 fill=z8:65=1% ... /* the root node right after root split with this commit */ NODE 8000000020801000 cnt=02 p=0000000000000000 type=I depth=0 mirror 00000001000087a0 fill=z8:65=1% { G------ ELM 0 L lo=00000000 obj=8000000000000000 rt=00 key=8000000000000000 ot=00 d tids 0000000000000001:0000000000000001 suboff=8000000020800000 mirror 00000001000087a0 G------ ELM 1 L lo=00000001 obj=0000000080000209 rt=01 key=0000000000000000 ot=00 tids 0000000100008420:0000000000000000 suboff=8000000020802000 mirror 00000001000087a0 G------ RBN 2 ? lo=ffffffff obj=7fffffffffffffff rt=ffff key=7fffffffffffffff ot=00 tids ffffffffffffffff:0000000000000000 suboff=0000000000000000 mirror 0000000000000000 } NODE 8000000020800000 cnt=32 p=8000000020801000 type=L depth=1 mirror 00000001000087a0 fill=z8:65=1% { ... Summary of changes: sys/vfs/hammer/hammer_btree.c | 2 ++ 1 file changed, 2 insertions(+) http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/f0b930f314d1ccc165af3f9fe5f2512343fc9482 -- DragonFly BSD source repository