If my memory serves me well, negative id means buckets (root, room, rack, cabinet, etc.), well positive means osds. On 2 December 2013 11:20, Lipeng Wan <lipengwan86@xxxxxxxxx> wrote: > Hi guys, > > I am reading the source code of ceph and trying to understand the data > structure of crush_map. Now I am confused by the use of "struct > crush_bucket **buckets" in function "int crush_do_rule(...)" in > src/crush/mapper.c. It seems that the index of array "map->buckets[]" > could be negative (see line 551, src/crush/mapper.c). I was wondering > if anyone could explain why the index of this array can be negative > and how those buckets were added into this array. Thanks. > > Best, > L. Wan > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Dong Yuan Email:yuandong1222@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
