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Commit dc98ff72 authored by Ilya Dryomov's avatar Ilya Dryomov
Browse files

libceph: introduce ceph_spg, ceph_pg_to_primary_shard() 



Store both raw pgid and actual spgid in ceph_osd_request_target.

Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
parent 8e48cf00

include/linux/ceph/osd_client.h

+2 −1
Original line number Diff line number Diff line
@@ -136,7 +136,8 @@ struct ceph_osd_request_target { 
	struct ceph_object_id target_oid;

	struct ceph_object_locator target_oloc;



	struct ceph_pg pgid;

	struct ceph_pg pgid;               /* last raw pg we mapped to */

	struct ceph_spg spgid;             /* last actual spg we mapped to */

	u32 pg_num;

	u32 pg_num_mask;

	struct ceph_osds acting;

include/linux/ceph/osdmap.h

+10 −0
Original line number Diff line number Diff line
@@ -24,6 +24,13 @@ struct ceph_pg { 
	uint32_t seed;

};



#define CEPH_SPG_NOSHARD	-1



struct ceph_spg {

	struct ceph_pg pgid;

	s8 shard;

};



int ceph_pg_compare(const struct ceph_pg *lhs, const struct ceph_pg *rhs);



#define CEPH_POOL_FLAG_HASHPSPOOL	(1ULL << 0) /* hash pg seed and pool id
@@ -271,6 +278,9 @@ void ceph_pg_to_up_acting_osds(struct ceph_osdmap *osdmap, 
			       const struct ceph_pg *raw_pgid,

			       struct ceph_osds *up,

			       struct ceph_osds *acting);

bool ceph_pg_to_primary_shard(struct ceph_osdmap *osdmap,

			      const struct ceph_pg *raw_pgid,

			      struct ceph_spg *spgid);

int ceph_pg_to_acting_primary(struct ceph_osdmap *osdmap,

			      const struct ceph_pg *raw_pgid);

net/ceph/debugfs.c

+10 −1
Original line number Diff line number Diff line
@@ -147,11 +147,20 @@ static int monc_show(struct seq_file *s, void *p) 
	return 0;

}



static void dump_spgid(struct seq_file *s, const struct ceph_spg *spgid)

{

	seq_printf(s, "%llu.%x", spgid->pgid.pool, spgid->pgid.seed);

	if (spgid->shard != CEPH_SPG_NOSHARD)

		seq_printf(s, "s%d", spgid->shard);

}



static void dump_target(struct seq_file *s, struct ceph_osd_request_target *t)

{

	int i;



	seq_printf(s, "osd%d\t%llu.%x\t[", t->osd, t->pgid.pool, t->pgid.seed);

	seq_printf(s, "osd%d\t%llu.%x\t", t->osd, t->pgid.pool, t->pgid.seed);

	dump_spgid(s, &t->spgid);

	seq_puts(s, "\t[");

	for (i = 0; i < t->up.size; i++)

		seq_printf(s, "%s%d", (!i ? "" : ","), t->up.osds[i]);

	seq_printf(s, "]/%d\t[", t->up.primary);

net/ceph/osd_client.c

+5 −2
Original line number Diff line number Diff line
@@ -373,6 +373,7 @@ static void target_copy(struct ceph_osd_request_target *dest, 
	ceph_oloc_copy(&dest->target_oloc, &src->target_oloc);



	dest->pgid = src->pgid; /* struct */

	dest->spgid = src->spgid; /* struct */

	dest->pg_num = src->pg_num;

	dest->pg_num_mask = src->pg_num_mask;

	ceph_osds_copy(&dest->acting, &src->acting);
@@ -1394,6 +1395,7 @@ static enum calc_target_result calc_target(struct ceph_osd_client *osdc, 
	    ceph_osds_changed(&t->acting, &acting, any_change) ||

	    force_resend) {

		t->pgid = pgid; /* struct */

		ceph_pg_to_primary_shard(osdc->osdmap, &pgid, &t->spgid);

		ceph_osds_copy(&t->acting, &acting);

		ceph_osds_copy(&t->up, &up);

		t->size = pi->size;
@@ -1595,9 +1597,10 @@ static void send_request(struct ceph_osd_request *req) 


	encode_request(req, req->r_request);



	dout("%s req %p tid %llu to pg %llu.%x osd%d flags 0x%x attempt %d\n",

	dout("%s req %p tid %llu to pgid %llu.%x spgid %llu.%xs%d osd%d flags 0x%x attempt %d\n",

	     __func__, req, req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed,

	     req->r_t.osd, req->r_flags, req->r_attempts);

	     req->r_t.spgid.pgid.pool, req->r_t.spgid.pgid.seed,

	     req->r_t.spgid.shard, osd->o_osd, req->r_flags, req->r_attempts);



	req->r_t.paused = false;

	req->r_stamp = jiffies;

net/ceph/osdmap.c

+33 −0
Original line number Diff line number Diff line
@@ -2265,6 +2265,39 @@ void ceph_pg_to_up_acting_osds(struct ceph_osdmap *osdmap, 
	WARN_ON(!osds_valid(up) || !osds_valid(acting));

}



bool ceph_pg_to_primary_shard(struct ceph_osdmap *osdmap,

			      const struct ceph_pg *raw_pgid,

			      struct ceph_spg *spgid)

{

	struct ceph_pg_pool_info *pi;

	struct ceph_pg pgid;

	struct ceph_osds up, acting;

	int i;



	pi = ceph_pg_pool_by_id(osdmap, raw_pgid->pool);

	if (!pi)

		return false;



	raw_pg_to_pg(pi, raw_pgid, &pgid);



	if (ceph_can_shift_osds(pi)) {

		spgid->pgid = pgid; /* struct */

		spgid->shard = CEPH_SPG_NOSHARD;

		return true;

	}



	ceph_pg_to_up_acting_osds(osdmap, &pgid, &up, &acting);

	for (i = 0; i < acting.size; i++) {

		if (acting.osds[i] == acting.primary) {

			spgid->pgid = pgid; /* struct */

			spgid->shard = i;

			return true;

		}

	}



	return false;

}



/*

 * Return acting primary for given PG, or -1 if none.

 */