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authorIlya Dryomov <idryomov@gmail.com>2016-04-28 16:07:23 +0200
committerIlya Dryomov <idryomov@gmail.com>2016-05-26 00:36:26 +0200
commita66dd38309f5d9c66ec9bc7911ff8da8cc37bb9f (patch)
tree57fad995941d806f665191d8c5d88ba3f311337a /net
parent63244fa123a755e4bbaee03022b68613c71d1332 (diff)
downloadlinux-sh-a66dd38309f5d9c66ec9bc7911ff8da8cc37bb9f.tar.gz
libceph: switch to calc_target(), part 1
Replace __calc_request_pg() and most of __map_request() with calc_target() and start using req->r_t. ceph_osdc_build_request() however still encodes base_oid, because it's called before calc_target() is and target_oid is empty at that point in time; a printf in osdc_show() also shows base_oid. This is fixed in "libceph: switch to calc_target(), part 2". Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'net')
-rw-r--r--net/ceph/debugfs.c2
-rw-r--r--net/ceph/osd_client.c119
2 files changed, 24 insertions, 97 deletions
diff --git a/net/ceph/debugfs.c b/net/ceph/debugfs.c
index 7f1cc22c3e8b..0c11ab5f8c30 100644
--- a/net/ceph/debugfs.c
+++ b/net/ceph/debugfs.c
@@ -161,7 +161,7 @@ static int osdc_show(struct seq_file *s, void *pp)
seq_printf(s, "%lld\tosd%d\t%lld.%x\t", req->r_tid,
req->r_osd ? req->r_osd->o_osd : -1,
- req->r_pgid.pool, req->r_pgid.seed);
+ req->r_t.pgid.pool, req->r_t.pgid.seed);
seq_printf(s, "%*pE", req->r_base_oid.name_len,
req->r_base_oid.name);
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index cff3a7e29233..013101598c41 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -350,8 +350,7 @@ static void ceph_osdc_release_request(struct kref *kref)
for (which = 0; which < req->r_num_ops; which++)
osd_req_op_data_release(req, which);
- ceph_oid_destroy(&req->r_base_oid);
- ceph_oid_destroy(&req->r_target_oid);
+ target_destroy(&req->r_t);
ceph_put_snap_context(req->r_snapc);
if (req->r_mempool)
@@ -420,10 +419,7 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
INIT_LIST_HEAD(&req->r_req_lru_item);
INIT_LIST_HEAD(&req->r_osd_item);
- ceph_oid_init(&req->r_base_oid);
- req->r_base_oloc.pool = -1;
- ceph_oid_init(&req->r_target_oid);
- req->r_target_oloc.pool = -1;
+ target_init(&req->r_t);
dout("%s req %p\n", __func__, req);
return req;
@@ -1308,16 +1304,6 @@ static bool __pool_full(struct ceph_pg_pool_info *pi)
*
* Caller should hold map_sem for read.
*/
-static bool __req_should_be_paused(struct ceph_osd_client *osdc,
- struct ceph_osd_request *req)
-{
- bool pauserd = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSERD);
- bool pausewr = ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_PAUSEWR) ||
- ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL);
- return (req->r_flags & CEPH_OSD_FLAG_READ && pauserd) ||
- (req->r_flags & CEPH_OSD_FLAG_WRITE && pausewr);
-}
-
static bool target_should_be_paused(struct ceph_osd_client *osdc,
const struct ceph_osd_request_target *t,
struct ceph_pg_pool_info *pi)
@@ -1332,45 +1318,6 @@ static bool target_should_be_paused(struct ceph_osd_client *osdc,
(t->flags & CEPH_OSD_FLAG_WRITE && pausewr);
}
-/*
- * Calculate mapping of a request to a PG. Takes tiering into account.
- */
-static int __calc_request_pg(struct ceph_osdmap *osdmap,
- struct ceph_osd_request *req,
- struct ceph_pg *pg_out)
-{
- bool need_check_tiering;
-
- need_check_tiering = false;
- if (req->r_target_oloc.pool == -1) {
- req->r_target_oloc = req->r_base_oloc; /* struct */
- need_check_tiering = true;
- }
- if (ceph_oid_empty(&req->r_target_oid)) {
- ceph_oid_copy(&req->r_target_oid, &req->r_base_oid);
- need_check_tiering = true;
- }
-
- if (need_check_tiering &&
- (req->r_flags & CEPH_OSD_FLAG_IGNORE_OVERLAY) == 0) {
- struct ceph_pg_pool_info *pi;
-
- pi = ceph_pg_pool_by_id(osdmap, req->r_target_oloc.pool);
- if (pi) {
- if ((req->r_flags & CEPH_OSD_FLAG_READ) &&
- pi->read_tier >= 0)
- req->r_target_oloc.pool = pi->read_tier;
- if ((req->r_flags & CEPH_OSD_FLAG_WRITE) &&
- pi->write_tier >= 0)
- req->r_target_oloc.pool = pi->write_tier;
- }
- /* !pi is caught in ceph_oloc_oid_to_pg() */
- }
-
- return ceph_object_locator_to_pg(osdmap, &req->r_target_oid,
- &req->r_target_oloc, pg_out);
-}
-
enum calc_target_result {
CALC_TARGET_NO_ACTION = 0,
CALC_TARGET_NEED_RESEND,
@@ -1510,46 +1457,26 @@ static void __enqueue_request(struct ceph_osd_request *req)
static int __map_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req, int force_resend)
{
- struct ceph_pg pgid;
- struct ceph_osds up, acting;
+ enum calc_target_result ct_res;
int err;
- bool was_paused;
dout("map_request %p tid %lld\n", req, req->r_tid);
- err = __calc_request_pg(osdc->osdmap, req, &pgid);
- if (err) {
+ ct_res = calc_target(osdc, &req->r_t, NULL, force_resend);
+ switch (ct_res) {
+ case CALC_TARGET_POOL_DNE:
list_move(&req->r_req_lru_item, &osdc->req_notarget);
- return err;
- }
- req->r_pgid = pgid;
-
- ceph_pg_to_up_acting_osds(osdc->osdmap, &pgid, &up, &acting);
-
- was_paused = req->r_paused;
- req->r_paused = __req_should_be_paused(osdc, req);
- if (was_paused && !req->r_paused)
- force_resend = 1;
-
- if ((!force_resend &&
- req->r_osd && req->r_osd->o_osd == acting.primary &&
- req->r_sent >= req->r_osd->o_incarnation &&
- req->r_num_pg_osds == acting.size &&
- memcmp(req->r_pg_osds, acting.osds,
- acting.size * sizeof(acting.osds[0])) == 0) ||
- (req->r_osd == NULL && acting.primary == -1) ||
- req->r_paused)
+ return -EIO;
+ case CALC_TARGET_NO_ACTION:
return 0; /* no change */
+ default:
+ BUG_ON(ct_res != CALC_TARGET_NEED_RESEND);
+ }
dout("map_request tid %llu pgid %lld.%x osd%d (was osd%d)\n",
- req->r_tid, pgid.pool, pgid.seed, acting.primary,
+ req->r_tid, req->r_t.pgid.pool, req->r_t.pgid.seed, req->r_t.osd,
req->r_osd ? req->r_osd->o_osd : -1);
- /* record full pg acting set */
- memcpy(req->r_pg_osds, acting.osds,
- acting.size * sizeof(acting.osds[0]));
- req->r_num_pg_osds = acting.size;
-
if (req->r_osd) {
__cancel_request(req);
list_del_init(&req->r_osd_item);
@@ -1557,22 +1484,22 @@ static int __map_request(struct ceph_osd_client *osdc,
req->r_osd = NULL;
}
- req->r_osd = lookup_osd(&osdc->osds, acting.primary);
- if (!req->r_osd && acting.primary >= 0) {
+ req->r_osd = lookup_osd(&osdc->osds, req->r_t.osd);
+ if (!req->r_osd && req->r_t.osd >= 0) {
err = -ENOMEM;
- req->r_osd = create_osd(osdc, acting.primary);
+ req->r_osd = create_osd(osdc, req->r_t.osd);
if (!req->r_osd) {
list_move(&req->r_req_lru_item, &osdc->req_notarget);
goto out;
}
dout("map_request osd %p is osd%d\n", req->r_osd,
- acting.primary);
+ req->r_osd->o_osd);
insert_osd(&osdc->osds, req->r_osd);
ceph_con_open(&req->r_osd->o_con,
- CEPH_ENTITY_TYPE_OSD, acting.primary,
- &osdc->osdmap->osd_addr[acting.primary]);
+ CEPH_ENTITY_TYPE_OSD, req->r_osd->o_osd,
+ &osdc->osdmap->osd_addr[req->r_osd->o_osd]);
}
__enqueue_request(req);
@@ -1592,15 +1519,15 @@ static void __send_request(struct ceph_osd_client *osdc,
dout("send_request %p tid %llu to osd%d flags %d pg %lld.%x\n",
req, req->r_tid, req->r_osd->o_osd, req->r_flags,
- (unsigned long long)req->r_pgid.pool, req->r_pgid.seed);
+ req->r_t.pgid.pool, req->r_t.pgid.seed);
/* fill in message content that changes each time we send it */
put_unaligned_le32(osdc->osdmap->epoch, req->r_request_osdmap_epoch);
put_unaligned_le32(req->r_flags, req->r_request_flags);
- put_unaligned_le64(req->r_target_oloc.pool, req->r_request_pool);
+ put_unaligned_le64(req->r_t.target_oloc.pool, req->r_request_pool);
p = req->r_request_pgid;
- ceph_encode_64(&p, req->r_pgid.pool);
- ceph_encode_32(&p, req->r_pgid.seed);
+ ceph_encode_64(&p, req->r_t.pgid.pool);
+ ceph_encode_32(&p, req->r_t.pgid.seed);
put_unaligned_le64(1, req->r_request_attempts); /* FIXME */
memcpy(req->r_request_reassert_version, &req->r_reassert_version,
sizeof(req->r_reassert_version));
@@ -1963,7 +1890,7 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg)
__unregister_request(osdc, req);
- ceph_oloc_copy(&req->r_target_oloc, &redir.oloc);
+ ceph_oloc_copy(&req->r_t.target_oloc, &redir.oloc);
/*
* Start redirect requests with nofail=true. If