X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fosp%2Fosp_md_object.c;h=d84a259e24aefebc33723765281d8c8defe60702;hp=fd262ac969a6510c7ba797a0c4c68f8eefc26ab2;hb=de2d5808bd2987f76d2486272e1a9c192ba277d4;hpb=a52aa3b4d9dd5efb87bc983c13b9f58d61ce8a8e

diff --git a/lustre/osp/osp_md_object.c b/lustre/osp/osp_md_object.c
index fd262ac..d84a259 100644
--- a/lustre/osp/osp_md_object.c
+++ b/lustre/osp/osp_md_object.c
@@ -38,20 +38,20 @@
 static const char dot[] = ".";
 static const char dotdot[] = "..";
 
-static int osp_md_declare_object_create(const struct lu_env *env,
-					struct dt_object *dt,
-					struct lu_attr *attr,
-					struct dt_allocation_hint *hint,
-					struct dt_object_format *dof,
-					struct thandle *th)
+int osp_md_declare_object_create(const struct lu_env *env,
+				 struct dt_object *dt,
+				 struct lu_attr *attr,
+				 struct dt_allocation_hint *hint,
+				 struct dt_object_format *dof,
+				 struct thandle *th)
 {
-	struct osp_thread_info	*osi = osp_env_info(env);
-	struct update_request	*update;
-	struct lu_fid		*fid1;
-	int			sizes[2] = {sizeof(struct obdo), 0};
-	char			*bufs[2] = {NULL, NULL};
-	int			buf_count;
-	int			rc;
+	struct osp_thread_info		*osi = osp_env_info(env);
+	struct dt_update_request	*update;
+	struct lu_fid			*fid1;
+	int				sizes[2] = {sizeof(struct obdo), 0};
+	char				*bufs[2] = {NULL, NULL};
+	int				buf_count;
+	int				rc;
 
 	update = out_find_create_update_loc(th, dt);
 	if (IS_ERR(update)) {
@@ -62,22 +62,18 @@ static int osp_md_declare_object_create(const struct lu_env *env,
 	}
 
 	osi->osi_obdo.o_valid = 0;
-	LASSERT(S_ISDIR(attr->la_mode));
 	obdo_from_la(&osi->osi_obdo, attr, attr->la_valid);
 	lustre_set_wire_obdo(NULL, &osi->osi_obdo, &osi->osi_obdo);
-	obdo_cpu_to_le(&osi->osi_obdo, &osi->osi_obdo);
 
 	bufs[0] = (char *)&osi->osi_obdo;
 	buf_count = 1;
 	fid1 = (struct lu_fid *)lu_object_fid(&dt->do_lu);
-	if (hint->dah_parent) {
+	if (hint != NULL && hint->dah_parent) {
 		struct lu_fid *fid2;
-		struct lu_fid *tmp_fid = &osi->osi_fid;
 
 		fid2 = (struct lu_fid *)lu_object_fid(&hint->dah_parent->do_lu);
-		fid_cpu_to_le(tmp_fid, fid2);
-		sizes[1] = sizeof(*tmp_fid);
-		bufs[1] = (char *)tmp_fid;
+		sizes[1] = sizeof(*fid2);
+		bufs[1] = (char *)fid2;
 		buf_count++;
 	}
 
@@ -98,20 +94,20 @@ static int osp_md_declare_object_create(const struct lu_env *env,
 		CDEBUG(D_HA, "%s: object "DFID" exists, destroy this orphan\n",
 		       dt->do_lu.lo_dev->ld_obd->obd_name, PFID(fid1));
 
-		rc = out_insert_update(env, update, OBJ_REF_DEL, fid1, 0,
+		rc = out_insert_update(env, update, OUT_REF_DEL, fid1, 0,
 				       NULL, NULL);
 		if (rc != 0)
 			GOTO(out, rc);
 
 		if (S_ISDIR(lu_object_attr(&dt->do_lu))) {
 			/* decrease for ".." */
-			rc = out_insert_update(env, update, OBJ_REF_DEL, fid1,
+			rc = out_insert_update(env, update, OUT_REF_DEL, fid1,
 					       0, NULL, NULL);
 			if (rc != 0)
 				GOTO(out, rc);
 		}
 
-		rc = out_insert_update(env, update, OBJ_DESTROY, fid1, 0, NULL,
+		rc = out_insert_update(env, update, OUT_DESTROY, fid1, 0, NULL,
 				       NULL);
 		if (rc != 0)
 			GOTO(out, rc);
@@ -122,7 +118,7 @@ static int osp_md_declare_object_create(const struct lu_env *env,
 		update_inc_batchid(update);
 	}
 
-	rc = out_insert_update(env, update, OBJ_CREATE, fid1, buf_count, sizes,
+	rc = out_insert_update(env, update, OUT_CREATE, fid1, buf_count, sizes,
 			       (const char **)bufs);
 out:
 	if (rc)
@@ -132,14 +128,10 @@ out:
 	return rc;
 }
 
-static int osp_md_object_create(const struct lu_env *env, struct dt_object *dt,
-				struct lu_attr *attr,
-				struct dt_allocation_hint *hint,
-				struct dt_object_format *dof,
-				struct thandle *th)
+int osp_md_object_create(const struct lu_env *env, struct dt_object *dt,
+			 struct lu_attr *attr, struct dt_allocation_hint *hint,
+			 struct dt_object_format *dof, struct thandle *th)
 {
-	struct osp_object  *obj = dt2osp_obj(dt);
-
 	CDEBUG(D_INFO, "create object "DFID"\n",
 	       PFID(&dt->do_lu.lo_header->loh_fid));
 
@@ -147,7 +139,6 @@ static int osp_md_object_create(const struct lu_env *env, struct dt_object *dt,
 	 * if creation reaches here, it means the object has been created
 	 * successfully */
 	dt->do_lu.lo_header->loh_attr |= LOHA_EXISTS | (attr->la_mode & S_IFMT);
-	obj->opo_empty = 1;
 
 	return 0;
 }
@@ -156,9 +147,9 @@ static int osp_md_declare_object_ref_del(const struct lu_env *env,
 					 struct dt_object *dt,
 					 struct thandle *th)
 {
-	struct update_request	*update;
-	struct lu_fid		*fid;
-	int			rc;
+	struct dt_update_request	*update;
+	struct lu_fid			*fid;
+	int				rc;
 
 	update = out_find_create_update_loc(th, dt);
 	if (IS_ERR(update)) {
@@ -170,7 +161,7 @@ static int osp_md_declare_object_ref_del(const struct lu_env *env,
 
 	fid = (struct lu_fid *)lu_object_fid(&dt->do_lu);
 
-	rc = out_insert_update(env, update, OBJ_REF_DEL, fid, 0, NULL, NULL);
+	rc = out_insert_update(env, update, OUT_REF_DEL, fid, 0, NULL, NULL);
 
 	return rc;
 }
@@ -188,9 +179,9 @@ static int osp_md_object_ref_del(const struct lu_env *env,
 static int osp_md_declare_ref_add(const struct lu_env *env,
 				  struct dt_object *dt, struct thandle *th)
 {
-	struct update_request	*update;
-	struct lu_fid		*fid;
-	int			rc;
+	struct dt_update_request	*update;
+	struct lu_fid			*fid;
+	int				rc;
 
 	update = out_find_create_update_loc(th, dt);
 	if (IS_ERR(update)) {
@@ -202,7 +193,7 @@ static int osp_md_declare_ref_add(const struct lu_env *env,
 
 	fid = (struct lu_fid *)lu_object_fid(&dt->do_lu);
 
-	rc = out_insert_update(env, update, OBJ_REF_ADD, fid, 0, NULL, NULL);
+	rc = out_insert_update(env, update, OUT_REF_ADD, fid, 0, NULL, NULL);
 
 	return rc;
 }
@@ -225,22 +216,19 @@ static void osp_md_ah_init(const struct lu_env *env,
 {
 	LASSERT(ah);
 
-	memset(ah, 0, sizeof(*ah));
 	ah->dah_parent = parent;
 	ah->dah_mode = child_mode;
 }
 
-static int osp_md_declare_attr_set(const struct lu_env *env,
-				   struct dt_object *dt,
-				   const struct lu_attr *attr,
-				   struct thandle *th)
+int osp_md_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
+			    const struct lu_attr *attr, struct thandle *th)
 {
-	struct osp_thread_info *osi = osp_env_info(env);
-	struct update_request  *update;
-	struct lu_fid          *fid;
-	int                     size = sizeof(struct obdo);
-	char                   *buf;
-	int                     rc;
+	struct osp_thread_info		*osi = osp_env_info(env);
+	struct dt_update_request	*update;
+	struct lu_fid			*fid;
+	int				size = sizeof(struct obdo);
+	char				*buf;
+	int				rc;
 
 	update = out_find_create_update_loc(th, dt);
 	if (IS_ERR(update)) {
@@ -251,24 +239,22 @@ static int osp_md_declare_attr_set(const struct lu_env *env,
 	}
 
 	osi->osi_obdo.o_valid = 0;
-	LASSERT(!(attr->la_valid & (LA_MODE | LA_TYPE)));
 	obdo_from_la(&osi->osi_obdo, (struct lu_attr *)attr,
 		     attr->la_valid);
 	lustre_set_wire_obdo(NULL, &osi->osi_obdo, &osi->osi_obdo);
-	obdo_cpu_to_le(&osi->osi_obdo, &osi->osi_obdo);
 
 	buf = (char *)&osi->osi_obdo;
 	fid = (struct lu_fid *)lu_object_fid(&dt->do_lu);
 
-	rc = out_insert_update(env, update, OBJ_ATTR_SET, fid, 1, &size,
+	rc = out_insert_update(env, update, OUT_ATTR_SET, fid, 1, &size,
 			       (const char **)&buf);
 
 	return rc;
 }
 
-static int osp_md_attr_set(const struct lu_env *env, struct dt_object *dt,
-			   const struct lu_attr *attr, struct thandle *th,
-			   struct lustre_capa *capa)
+int osp_md_attr_set(const struct lu_env *env, struct dt_object *dt,
+		    const struct lu_attr *attr, struct thandle *th,
+		    struct lustre_capa *capa)
 {
 	CDEBUG(D_INFO, "attr set object "DFID"\n",
 	       PFID(&dt->do_lu.lo_header->loh_fid));
@@ -331,13 +317,12 @@ static int osp_md_index_lookup(const struct lu_env *env, struct dt_object *dt,
 	struct lu_buf		*lbuf	= &osp_env_info(env)->osi_lb2;
 	struct osp_device	*osp	= lu2osp_dev(dt->do_lu.lo_dev);
 	struct dt_device	*dt_dev	= &osp->opd_dt_dev;
-	struct update_request	*update;
-	struct ptlrpc_request	*req = NULL;
-	int			size = strlen((char *)key) + 1;
-	int			rc;
-	struct update_reply	*reply;
-	struct lu_fid		*fid;
-
+	struct dt_update_request   *update;
+	struct object_update_reply *reply;
+	struct ptlrpc_request	   *req = NULL;
+	int			   size = strlen((char *)key) + 1;
+	struct lu_fid		   *fid;
+	int			   rc;
 	ENTRY;
 
 	/* Because it needs send the update buffer right away,
@@ -348,9 +333,9 @@ static int osp_md_index_lookup(const struct lu_env *env, struct dt_object *dt,
 	if (IS_ERR(update))
 		RETURN(PTR_ERR(update));
 
-	rc = out_insert_update(env, update, OBJ_INDEX_LOOKUP,
-			       lu_object_fid(&dt->do_lu), 1, &size,
-			       (const char **)&key);
+	rc = out_insert_update(env, update, OUT_INDEX_LOOKUP,
+			       lu_object_fid(&dt->do_lu),
+			       1, &size, (const char **)&key);
 	if (rc) {
 		CERROR("%s: Insert update error: rc = %d\n",
 		       dt_dev->dd_lu_dev.ld_obd->obd_name, rc);
@@ -361,26 +346,19 @@ static int osp_md_index_lookup(const struct lu_env *env, struct dt_object *dt,
 	if (rc < 0)
 		GOTO(out, rc);
 
-	reply = req_capsule_server_sized_get(&req->rq_pill, &RMF_UPDATE_REPLY,
-					     UPDATE_BUFFER_SIZE);
-	if (reply->ur_version != UPDATE_REPLY_V1) {
+	reply = req_capsule_server_sized_get(&req->rq_pill,
+					     &RMF_OUT_UPDATE_REPLY,
+					     OUT_UPDATE_REPLY_SIZE);
+	if (reply->ourp_magic != UPDATE_REPLY_MAGIC) {
 		CERROR("%s: Wrong version %x expected %x: rc = %d\n",
 		       dt_dev->dd_lu_dev.ld_obd->obd_name,
-		       reply->ur_version, UPDATE_REPLY_V1, -EPROTO);
+		       reply->ourp_magic, UPDATE_REPLY_MAGIC, -EPROTO);
 		GOTO(out, rc = -EPROTO);
 	}
 
-	rc = update_get_reply_result(reply, NULL, 0);
-	if (rc < 0) {
-		CERROR("%s: wrong version lookup "DFID" %s: rc = %d\n",
-		       dt_dev->dd_lu_dev.ld_obd->obd_name,
-		       PFID(lu_object_fid(&dt->do_lu)), (char *)key, rc);
-		GOTO(out, rc);
-	}
-
-	rc = update_get_reply_buf(reply, lbuf, 0);
+	rc = object_update_result_data_get(reply, lbuf, 0);
 	if (rc < 0)
-		GOTO(out, rc);
+		GOTO(out, rc = size);
 
 	if (lbuf->lb_len != sizeof(*fid)) {
 		CERROR("%s: lookup "DFID" %s wrong size %d\n",
@@ -391,7 +369,8 @@ static int osp_md_index_lookup(const struct lu_env *env, struct dt_object *dt,
 	}
 
 	fid = lbuf->lb_buf;
-	fid_le_to_cpu(fid, fid);
+	if (ptlrpc_rep_need_swab(req))
+		lustre_swab_lu_fid(fid);
 	if (!fid_is_sane(fid)) {
 		CERROR("%s: lookup "DFID" %s invalid fid "DFID"\n",
 		       dt_dev->dd_lu_dev.ld_obd->obd_name,
@@ -418,13 +397,13 @@ static int osp_md_declare_insert(const struct lu_env *env,
 				 const struct dt_key *key,
 				 struct thandle *th)
 {
-	struct update_request	*update;
-	struct lu_fid		*fid;
-	struct lu_fid		*rec_fid = (struct lu_fid *)rec;
-	int			size[2] = {strlen((char *)key) + 1,
+	struct dt_update_request *update;
+	struct lu_fid		 *fid;
+	struct lu_fid		 *rec_fid = (struct lu_fid *)rec;
+	int			 size[2] = {strlen((char *)key) + 1,
 						  sizeof(*rec_fid)};
-	const char		*bufs[2] = {(char *)key, (char *)rec_fid};
-	int			rc;
+	const char		 *bufs[2] = {(char *)key, (char *)rec_fid};
+	int			 rc;
 
 	update = out_find_create_update_loc(th, dt);
 	if (IS_ERR(update)) {
@@ -442,7 +421,7 @@ static int osp_md_declare_insert(const struct lu_env *env,
 
 	fid_cpu_to_le(rec_fid, rec_fid);
 
-	rc = out_insert_update(env, update, OBJ_INDEX_INSERT, fid,
+	rc = out_insert_update(env, update, OUT_INDEX_INSERT, fid,
 			       ARRAY_SIZE(size), size, bufs);
 	return rc;
 }
@@ -463,7 +442,7 @@ static int osp_md_declare_delete(const struct lu_env *env,
 				 const struct dt_key *key,
 				 struct thandle *th)
 {
-	struct update_request *update;
+	struct dt_update_request *update;
 	struct lu_fid *fid;
 	int size = strlen((char *)key) + 1;
 	int rc;
@@ -478,7 +457,7 @@ static int osp_md_declare_delete(const struct lu_env *env,
 
 	fid = (struct lu_fid *)lu_object_fid(&dt->do_lu);
 
-	rc = out_insert_update(env, update, OBJ_INDEX_DELETE, fid, 1, &size,
+	rc = out_insert_update(env, update, OUT_INDEX_DELETE, fid, 1, &size,
 			       (const char **)&key);
 
 	return rc;
@@ -496,94 +475,102 @@ static int osp_md_index_delete(const struct lu_env *env,
 	return 0;
 }
 
-/**
- * Creates or initializes iterator context.
- *
- * Note: for OSP, these index iterate api is only used to check
- * whether the directory is empty now (see mdd_dir_is_empty).
- * Since dir_empty will be return by OBJ_ATTR_GET(see osp_attr_get/
- * out_attr_get). So the implementation of these iterator is simplied
- * to make mdd_dir_is_empty happy. The real iterator should be
- * implemented, if we need it one day.
- */
-static struct dt_it *osp_it_init(const struct lu_env *env,
-				 struct dt_object *dt,
-				 __u32 attr,
-				struct lustre_capa *capa)
+int osp_md_index_it_next(const struct lu_env *env, struct dt_it *di)
 {
-	lu_object_get(&dt->do_lu);
-	return (struct dt_it *)dt;
-}
-
-static void osp_it_fini(const struct lu_env *env, struct dt_it *di)
-{
-	struct dt_object *dt = (struct dt_object *)di;
-	lu_object_put(env, &dt->do_lu);
-}
-
-static int osp_it_get(const struct lu_env *env,
-		      struct dt_it *di, const struct dt_key *key)
-{
-	return 1;
-}
-
-static void osp_it_put(const struct lu_env *env, struct dt_it *di)
-{
-	return;
-}
+	struct osp_it		*it = (struct osp_it *)di;
+	struct lu_idxpage	*idxpage;
+	struct lu_dirent	*ent = (struct lu_dirent *)it->ooi_ent;
+	int			rc;
+	ENTRY;
 
-static int osp_it_next(const struct lu_env *env, struct dt_it *di)
-{
-	struct dt_object *dt = (struct dt_object *)di;
-	struct osp_object *o = dt2osp_obj(dt);
+again:
+	idxpage = it->ooi_cur_idxpage;
+	if (idxpage != NULL) {
+		if (idxpage->lip_nr == 0)
+			RETURN(1);
+
+		it->ooi_pos_ent++;
+		if (ent == NULL) {
+			it->ooi_ent =
+			      (struct lu_dirent *)idxpage->lip_entries;
+			RETURN(0);
+		} else if (le16_to_cpu(ent->lde_reclen) != 0 &&
+			   it->ooi_pos_ent < idxpage->lip_nr) {
+			ent = (struct lu_dirent *)(((char *)ent) +
+					le16_to_cpu(ent->lde_reclen));
+			it->ooi_ent = ent;
+			RETURN(0);
+		} else {
+			it->ooi_ent = NULL;
+		}
+	}
 
-	if (o->opo_empty)
-		return 1;
+	rc = osp_it_next_page(env, di);
+	if (rc == 0)
+		goto again;
 
-	return 0;
+	RETURN(rc);
 }
 
 static struct dt_key *osp_it_key(const struct lu_env *env,
 				 const struct dt_it *di)
 {
-	LBUG();
-	return NULL;
+	struct osp_it		*it = (struct osp_it *)di;
+	struct lu_dirent	*ent = (struct lu_dirent *)it->ooi_ent;
+
+	return (struct dt_key *)ent->lde_name;
 }
 
 static int osp_it_key_size(const struct lu_env *env, const struct dt_it *di)
 {
-	LBUG();
-	return 0;
-}
+	struct osp_it		*it = (struct osp_it *)di;
+	struct lu_dirent	*ent = (struct lu_dirent *)it->ooi_ent;
 
-static int osp_it_rec(const struct lu_env *env, const struct dt_it *di,
-		      struct dt_rec *lde, __u32 attr)
-{
-	LBUG();
-	return 0;
+	return (int)le16_to_cpu(ent->lde_namelen);
 }
 
-static __u64 osp_it_store(const struct lu_env *env, const struct dt_it *di)
+static int osp_md_index_it_rec(const struct lu_env *env, const struct dt_it *di,
+			       struct dt_rec *rec, __u32 attr)
 {
-	LBUG();
+	struct osp_it		*it = (struct osp_it *)di;
+	struct lu_dirent	*ent = (struct lu_dirent *)it->ooi_ent;
+	int			reclen;
+
+	reclen = lu_dirent_calc_size(le16_to_cpu(ent->lde_namelen), attr);
+	memcpy(rec, ent, reclen);
 	return 0;
 }
 
+/**
+ * Locate the iteration cursor to the specified position (cookie).
+ *
+ * \param[in] env	pointer to the thread context
+ * \param[in] di	pointer to the iteration structure
+ * \param[in] hash	the specified position
+ *
+ * \retval		positive number for locating to the exactly position
+ *			or the next
+ * \retval		0 for arriving at the end of the iteration
+ * \retval		negative error number on failure
+ */
 static int osp_it_load(const struct lu_env *env, const struct dt_it *di,
 		       __u64 hash)
 {
-	LBUG();
-	return 0;
-}
+	struct osp_it	*it	= (struct osp_it *)di;
+	int		 rc;
 
-static int osp_it_key_rec(const struct lu_env *env, const struct dt_it *di,
-			  void *key_rec)
-{
-	LBUG();
-	return 0;
+	it->ooi_next = hash;
+	rc = osp_md_index_it_next(env, (struct dt_it *)di);
+	if (rc == 1)
+		return 0;
+
+	if (rc == 0)
+		return 1;
+
+	return rc;
 }
 
-static const struct dt_index_operations osp_md_index_ops = {
+const struct dt_index_operations osp_md_index_ops = {
 	.dio_lookup         = osp_md_index_lookup,
 	.dio_declare_insert = osp_md_declare_insert,
 	.dio_insert         = osp_md_index_insert,
@@ -594,10 +581,10 @@ static const struct dt_index_operations osp_md_index_ops = {
 		.fini     = osp_it_fini,
 		.get      = osp_it_get,
 		.put      = osp_it_put,
-		.next     = osp_it_next,
+		.next     = osp_md_index_it_next,
 		.key      = osp_it_key,
 		.key_size = osp_it_key_size,
-		.rec      = osp_it_rec,
+		.rec      = osp_md_index_it_rec,
 		.store    = osp_it_store,
 		.load     = osp_it_load,
 		.key_rec  = osp_it_key_rec,
@@ -616,23 +603,22 @@ static int osp_md_object_lock(const struct lu_env *env,
 			      struct dt_object *dt,
 			      struct lustre_handle *lh,
 			      struct ldlm_enqueue_info *einfo,
-			      void *policy)
+			      ldlm_policy_data_t *policy)
 {
-	struct osp_thread_info *info = osp_env_info(env);
-	struct ldlm_res_id     *res_id = &info->osi_resid;
-	struct dt_device       *dt_dev = lu2dt_dev(dt->do_lu.lo_dev);
-	struct osp_device      *osp = dt2osp_dev(dt_dev);
-	struct ptlrpc_request  *req = NULL;
-	int                     rc = 0;
-	__u64                   flags = 0;
-	ldlm_mode_t             mode;
+	struct ldlm_res_id	*res_id;
+	struct dt_device	*dt_dev = lu2dt_dev(dt->do_lu.lo_dev);
+	struct osp_device	*osp = dt2osp_dev(dt_dev);
+	struct ptlrpc_request	*req;
+	int			rc = 0;
+	__u64			flags = 0;
+	ldlm_mode_t		mode;
 
-	fid_build_reg_res_name(lu_object_fid(&dt->do_lu), res_id);
+	res_id = einfo->ei_res_id;
+	LASSERT(res_id != NULL);
 
 	mode = ldlm_lock_match(osp->opd_obd->obd_namespace,
 			       LDLM_FL_BLOCK_GRANTED, res_id,
-			       einfo->ei_type,
-			       (ldlm_policy_data_t *)policy,
+			       einfo->ei_type, policy,
 			       einfo->ei_mode, lh, 0);
 	if (mode > 0)
 		return ELDLM_OK;
@@ -650,6 +636,19 @@ static int osp_md_object_lock(const struct lu_env *env,
 	return rc == ELDLM_OK ? 0 : -EIO;
 }
 
+static int osp_md_object_unlock(const struct lu_env *env,
+				struct dt_object *dt,
+				struct ldlm_enqueue_info *einfo,
+				ldlm_policy_data_t *policy)
+{
+	struct lustre_handle	*lockh = einfo->ei_cbdata;
+
+	/* unlock finally */
+	ldlm_lock_decref(lockh, einfo->ei_mode);
+
+	return 0;
+}
+
 struct dt_object_operations osp_md_obj_ops = {
 	.do_read_lock         = osp_md_object_read_lock,
 	.do_write_lock        = osp_md_object_write_lock,
@@ -671,6 +670,53 @@ struct dt_object_operations osp_md_obj_ops = {
 	.do_xattr_get         = osp_xattr_get,
 	.do_declare_xattr_set = osp_declare_xattr_set,
 	.do_xattr_set         = osp_xattr_set,
+	.do_declare_xattr_del = osp_declare_xattr_del,
+	.do_xattr_del         = osp_xattr_del,
 	.do_index_try         = osp_md_index_try,
 	.do_object_lock       = osp_md_object_lock,
+	.do_object_unlock     = osp_md_object_unlock,
+};
+
+static ssize_t osp_md_declare_write(const struct lu_env *env,
+				    struct dt_object *dt,
+				    const struct lu_buf *buf,
+				    loff_t pos, struct thandle *th)
+{
+	struct dt_update_request  *update;
+	struct lu_fid		  *fid;
+	int			  sizes[2] = {buf->lb_len, sizeof(pos)};
+	const char		  *bufs[2] = {(char *)buf->lb_buf,
+					      (char *)&pos};
+	ssize_t			  rc;
+
+	update = out_find_create_update_loc(th, dt);
+	if (IS_ERR(update)) {
+		CERROR("%s: Get OSP update buf failed: rc = %d\n",
+		       dt->do_lu.lo_dev->ld_obd->obd_name,
+		       (int)PTR_ERR(update));
+		return PTR_ERR(update);
+	}
+
+	pos = cpu_to_le64(pos);
+	bufs[1] = (char *)&pos;
+	fid = (struct lu_fid *)lu_object_fid(&dt->do_lu);
+	rc = out_insert_update(env, update, OUT_WRITE, fid,
+			       ARRAY_SIZE(sizes), sizes, bufs);
+
+	return rc;
+
+}
+
+static ssize_t osp_md_write(const struct lu_env *env, struct dt_object *dt,
+			    const struct lu_buf *buf, loff_t *pos,
+			    struct thandle *handle,
+			    struct lustre_capa *capa, int ignore_quota)
+{
+	return buf->lb_len;
+}
+
+/* These body operation will be used to write symlinks during migration etc */
+struct dt_body_operations osp_md_body_ops = {
+	.dbo_declare_write	= osp_md_declare_write,
+	.dbo_write		= osp_md_write,
 };