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Commit ac972230 authored by Ilya Dryomov's avatar Ilya Dryomov Committed by Sage Weil
Browse files

libceph: switch ceph_calc_pg_acting() to new helpers 



Switch ceph_calc_pg_acting() to new helpers: pg_to_raw_osds(),
raw_to_up_osds() and apply_temps().

Signed-off-by: default avatarIlya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: default avatarAlex Elder <elder@linaro.org>
parent 45966c34

include/linux/ceph/osdmap.h

+1 −1
Original line number Diff line number Diff line
@@ -212,7 +212,7 @@ extern int ceph_oloc_oid_to_pg(struct ceph_osdmap *osdmap, 


extern int ceph_calc_pg_acting(struct ceph_osdmap *osdmap,

			       struct ceph_pg pgid,

			       int *acting);

			       int *osds);

extern int ceph_calc_pg_primary(struct ceph_osdmap *osdmap,

				struct ceph_pg pgid);

net/ceph/osdmap.c

+38 −13
Original line number Diff line number Diff line
@@ -1649,24 +1649,49 @@ static int apply_temps(struct ceph_osdmap *osdmap, 
}



/*

 * Return acting set for given pgid.

 * Calculate acting set for given pgid.

 *

 * Return acting set length, or error.

 */

int ceph_calc_pg_acting(struct ceph_osdmap *osdmap, struct ceph_pg pgid,

			int *acting)

			int *osds)

{

	int rawosds[CEPH_PG_MAX_SIZE], *osds;

	int i, o, num = CEPH_PG_MAX_SIZE;

	struct ceph_pg_pool_info *pool;

	u32 pps;

	int len;

	int primary;



	osds = calc_pg_raw(osdmap, pgid, rawosds, &num);

	if (!osds)

		return -1;

	pool = __lookup_pg_pool(&osdmap->pg_pools, pgid.pool);

	if (!pool)

		return 0;



	/* primary is first up osd */

	o = 0;

	for (i = 0; i < num; i++)

		if (ceph_osd_is_up(osdmap, osds[i]))

			acting[o++] = osds[i];

	return o;

	if (pool->flags & CEPH_POOL_FLAG_HASHPSPOOL) {

		/* hash pool id and seed so that pool PGs do not overlap */

		pps = crush_hash32_2(CRUSH_HASH_RJENKINS1,

				     ceph_stable_mod(pgid.seed, pool->pgp_num,

						     pool->pgp_num_mask),

				     pgid.pool);

	} else {

		/*

		 * legacy behavior: add ps and pool together.  this is

		 * not a great approach because the PGs from each pool

		 * will overlap on top of each other: 0.5 == 1.4 ==

		 * 2.3 == ...

		 */

		pps = ceph_stable_mod(pgid.seed, pool->pgp_num,

				      pool->pgp_num_mask) +

			(unsigned)pgid.pool;

	}



	len = pg_to_raw_osds(osdmap, pool, pgid, pps, osds);

	if (len < 0)

		return len;



	len = raw_to_up_osds(osdmap, pool, osds, len, &primary);



	len = apply_temps(osdmap, pool, pgid, osds, len, &primary);



	return len;

}



/*