weight_set array in Ceph CRUSH

Bobby <italienisch1987@xxxxxxxxx> · Fri, 24 Jul 2020 16:42:16 +0200

Hi,

I have a confusion regarding a struct data type in Ceph CRUSH source code. Header fie in  here https://github.com/ceph/ceph/blob/master/src/crush/crush.h

If you see below. there is a struct data type namely _weight_set_.  What I have understood going through different CRUSH maps, this _weight_set_ array should be a 2D array, am I right?

struct crush_choose_arg {
 __s32 *ids;                           /*!< values to use instead of items */
  __u32 ids_size;                       /*!< size of the __ids__ array */
  struct crush_weight_set *weight_set;  /*!< weight replacements for a given position */
  __u32 weight_set_positions;
};

BR
Bobby
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struct crush_choose_arg {
	__s32 ids; /!< values to use instead of items */
	__u32 ids_size; /!< size of the __ids__ array /
	struct crush_weight_set weight_set; /!< weight replacements for a given position */
	__u32 weight_set_positions;
	};