X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fosp%2Fosp_md_object.c;h=37ce566ec51c251830547d3804f47e79165cc70e;hp=fa86222bb3232dfe79c277f6e8e9ed9a50091e47;hb=27659339a94d5eb1789e08c796c953f6effebc11;hpb=de8572645d287d17c409b99dabdf176822d91486

diff --git a/lustre/osp/osp_md_object.c b/lustre/osp/osp_md_object.c
index fa86222..37ce566 100644
--- a/lustre/osp/osp_md_object.c
+++ b/lustre/osp/osp_md_object.c
@@ -20,7 +20,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright (c) 2013, 2014, Intel Corporation.
+ * Copyright (c) 2013, 2017, Intel Corporation.
  */
 /*
  * lustre/osp/osp_md_object.c
@@ -53,11 +53,12 @@
 
 #define DEBUG_SUBSYSTEM S_MDS
 
+#include <llog_swab.h>
 #include <lustre_log.h>
 #include "osp_internal.h"
 
-static const char dot[] = ".";
-static const char dotdot[] = "..";
+#define OUT_UPDATE_BUFFER_SIZE_ADD	4096
+#define OUT_UPDATE_BUFFER_SIZE_MAX	(256 * 4096)  /*  1M update size now */
 
 /**
  * Interpreter call for object creation
@@ -76,23 +77,30 @@ static const char dotdot[] = "..";
  *
  * \retval		only return 0 for now
  */
-static int osp_object_create_interpreter(const struct lu_env *env,
-					 struct object_update_reply *reply,
-					 struct ptlrpc_request *req,
-					 struct osp_object *obj,
-					 void *data, int index, int rc)
+static int osp_create_interpreter(const struct lu_env *env,
+				  struct object_update_reply *reply,
+				  struct ptlrpc_request *req,
+				  struct osp_object *obj,
+				  void *data, int index, int rc)
 {
-	if (rc != 0) {
+	if (rc != 0 && rc != -EEXIST) {
 		obj->opo_obj.do_lu.lo_header->loh_attr &= ~LOHA_EXISTS;
 		obj->opo_non_exist = 1;
 	}
+
+	/*
+	 * invalidate opo cache for the object after the object is created, so
+	 * attr_get will try to get attr from remote object.
+	 */
+	osp_obj_invalidate_cache(obj);
+
 	return 0;
 }
 
 /**
  * Implementation of dt_object_operations::do_declare_create
  *
- * Create the dt_update_request to track the update for this OSP
+ * Create the osp_update_request to track the update for this OSP
  * in the transaction.
  *
  * \param[in] env	execution environment
@@ -105,16 +113,30 @@ static int osp_object_create_interpreter(const struct lu_env *env,
  * \retval		0 if preparation succeeds.
  * \retval		negative errno if preparation fails.
  */
-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_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)
 {
 	return osp_trans_update_request_create(th);
 }
 
+struct object_update *
+update_buffer_get_update(struct object_update_request *request,
+			 unsigned int index)
+{
+	void	*ptr;
+	int	i;
+
+	if (index > request->ourq_count)
+		return NULL;
+
+	ptr = &request->ourq_updates[0];
+	for (i = 0; i < index; i++)
+		ptr += object_update_size(ptr);
+
+	return ptr;
+}
+
 /**
  * Implementation of dt_object_operations::do_create
  *
@@ -131,30 +153,34 @@ int osp_md_declare_object_create(const struct lu_env *env,
  * \retval		0 if packing creation succeeds.
  * \retval		negative errno if packing creation fails.
  */
-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_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 dt_update_request	*update;
-	int				rc;
+	struct osp_update_request *update;
+	struct osp_object *obj = dt2osp_obj(dt);
+	int rc;
 
-	update = thandle_to_dt_update_request(th);
+	update = thandle_to_osp_update_request(th);
 	LASSERT(update != NULL);
 
-	rc = out_create_pack(env, &update->dur_buf,
-			     lu_object_fid(&dt->do_lu), attr, hint, dof,
-			     update->dur_batchid);
+	LASSERT(attr->la_valid & LA_TYPE);
+	rc = OSP_UPDATE_RPC_PACK(env, out_create_pack, update,
+				 lu_object_fid(&dt->do_lu), attr, hint, dof);
 	if (rc != 0)
 		GOTO(out, rc);
 
-	rc = osp_insert_update_callback(env, update, dt2osp_obj(dt), attr,
-					osp_object_create_interpreter);
+	rc = osp_insert_update_callback(env, update, dt2osp_obj(dt), NULL,
+					osp_create_interpreter);
 
 	if (rc < 0)
 		GOTO(out, rc);
 
 	dt->do_lu.lo_header->loh_attr |= LOHA_EXISTS | (attr->la_mode & S_IFMT);
 	dt2osp_obj(dt)->opo_non_exist = 0;
+	obj->opo_stale = 0;
+
+	obj->opo_attr = *attr;
 out:
 	return rc;
 }
@@ -162,7 +188,7 @@ out:
 /**
  * Implementation of dt_object_operations::do_declare_ref_del
  *
- * Create the dt_update_request to track the update for this OSP
+ * Create the osp_update_request to track the update for this OSP
  * in the transaction.
  *
  * \param[in] env	execution environment
@@ -194,22 +220,21 @@ static int osp_md_declare_ref_del(const struct lu_env *env,
 static int osp_md_ref_del(const struct lu_env *env, struct dt_object *dt,
 			  struct thandle *th)
 {
-	struct dt_update_request	*update;
-	int				rc;
+	struct osp_update_request *update;
+	int rc;
 
-	update = thandle_to_dt_update_request(th);
+	update = thandle_to_osp_update_request(th);
 	LASSERT(update != NULL);
 
-	rc = out_ref_del_pack(env, &update->dur_buf,
-			      lu_object_fid(&dt->do_lu),
-			      update->dur_batchid);
+	rc = OSP_UPDATE_RPC_PACK(env, out_ref_del_pack, update,
+				 lu_object_fid(&dt->do_lu));
 	return rc;
 }
 
 /**
  * Implementation of dt_object_operations::do_declare_ref_del
  *
- * Create the dt_update_request to track the update for this OSP
+ * Create the osp_update_request to track the update for this OSP
  * in the transaction.
  *
  * \param[in] env	execution environment
@@ -241,15 +266,14 @@ static int osp_md_declare_ref_add(const struct lu_env *env,
 static int osp_md_ref_add(const struct lu_env *env, struct dt_object *dt,
 			  struct thandle *th)
 {
-	struct dt_update_request	*update;
-	int				rc;
+	struct osp_update_request *update;
+	int rc;
 
-	update = thandle_to_dt_update_request(th);
+	update = thandle_to_osp_update_request(th);
 	LASSERT(update != NULL);
 
-	rc = out_ref_add_pack(env, &update->dur_buf,
-			      lu_object_fid(&dt->do_lu),
-			      update->dur_batchid);
+	rc = OSP_UPDATE_RPC_PACK(env, out_ref_add_pack, update,
+				 lu_object_fid(&dt->do_lu));
 	return rc;
 }
 
@@ -282,7 +306,7 @@ static void osp_md_ah_init(const struct lu_env *env,
 /**
  * Implementation of dt_object_operations::do_declare_attr_get
  *
- * Create the dt_update_request to track the update for this OSP
+ * Create the osp_update_request to track the update for this OSP
  * in the transaction.
  *
  * \param[in] env	execution environment
@@ -318,33 +342,31 @@ int osp_md_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
 int osp_md_attr_set(const struct lu_env *env, struct dt_object *dt,
 		    const struct lu_attr *attr, struct thandle *th)
 {
-	struct dt_update_request	*update;
-	int				rc;
+	struct osp_update_request *update;
+	int rc;
 
-	update = thandle_to_dt_update_request(th);
+	update = thandle_to_osp_update_request(th);
 	LASSERT(update != NULL);
 
-	rc = out_attr_set_pack(env, &update->dur_buf,
-			       lu_object_fid(&dt->do_lu), attr,
-			       update->dur_batchid);
-
+	rc = OSP_UPDATE_RPC_PACK(env, out_attr_set_pack, update,
+				 lu_object_fid(&dt->do_lu), attr);
 	return rc;
 }
 
 /**
  * Implementation of dt_object_operations::do_read_lock
  *
- * osp_md_object_{read,write}_lock() will only lock the remote object in the
+ * osp_md_{read,write}_lock() will only lock the remote object in the
  * local cache, which uses the semaphore (opo_sem) inside the osp_object to
  * lock the object. Note: it will not lock the object in the whole cluster,
  * which relies on the LDLM lock.
  *
  * \param[in] env	execution environment
  * \param[in] dt	object to be locked
- * \param[in] role	lock role from MDD layer, see mdd_object_role().
+ * \param[in] role	lock role from MDD layer, see dt_object_role().
  */
-static void osp_md_object_read_lock(const struct lu_env *env,
-				    struct dt_object *dt, unsigned role)
+static void osp_md_read_lock(const struct lu_env *env, struct dt_object *dt,
+			     unsigned role)
 {
 	struct osp_object  *obj = dt2osp_obj(dt);
 
@@ -361,10 +383,10 @@ static void osp_md_object_read_lock(const struct lu_env *env,
  *
  * \param[in] env	execution environment
  * \param[in] dt	object to be locked
- * \param[in] role	lock role from MDD layer, see mdd_object_role().
+ * \param[in] role	lock role from MDD layer, see dt_object_role().
  */
-static void osp_md_object_write_lock(const struct lu_env *env,
-				     struct dt_object *dt, unsigned role)
+static void osp_md_write_lock(const struct lu_env *env, struct dt_object *dt,
+			      unsigned role)
 {
 	struct osp_object *obj = dt2osp_obj(dt);
 
@@ -382,8 +404,7 @@ static void osp_md_object_write_lock(const struct lu_env *env,
  * \param[in] env	execution environment
  * \param[in] dt	object to be unlocked
  */
-static void osp_md_object_read_unlock(const struct lu_env *env,
-				      struct dt_object *dt)
+static void osp_md_read_unlock(const struct lu_env *env, struct dt_object *dt)
 {
 	struct osp_object *obj = dt2osp_obj(dt);
 
@@ -398,8 +419,7 @@ static void osp_md_object_read_unlock(const struct lu_env *env,
  * \param[in] env	execution environment
  * \param[in] dt	object to be unlocked
  */
-static void osp_md_object_write_unlock(const struct lu_env *env,
-				       struct dt_object *dt)
+static void osp_md_write_unlock(const struct lu_env *env, struct dt_object *dt)
 {
 	struct osp_object *obj = dt2osp_obj(dt);
 
@@ -416,8 +436,7 @@ static void osp_md_object_write_unlock(const struct lu_env *env,
  * \param[in] env	execution environment
  * \param[in] dt	object to be tested
  */
-static int osp_md_object_write_locked(const struct lu_env *env,
-				      struct dt_object *dt)
+static int osp_md_write_locked(const struct lu_env *env, struct dt_object *dt)
 {
 	struct osp_object *obj = dt2osp_obj(dt);
 
@@ -444,7 +463,7 @@ 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 dt_update_request   *update;
+	struct osp_update_request   *update;
 	struct object_update_reply *reply;
 	struct ptlrpc_request	   *req = NULL;
 	struct lu_fid		   *fid;
@@ -455,12 +474,12 @@ static int osp_md_index_lookup(const struct lu_env *env, struct dt_object *dt,
 	 * just create an update buffer, instead of attaching the
 	 * update_remote list of the thandle.
 	 */
-	update = dt_update_request_create(dt_dev);
+	update = osp_update_request_create(dt_dev);
 	if (IS_ERR(update))
 		RETURN(PTR_ERR(update));
 
-	rc = out_index_lookup_pack(env, &update->dur_buf,
-				   lu_object_fid(&dt->do_lu), rec, key);
+	rc = OSP_UPDATE_RPC_PACK(env, out_index_lookup_pack, update,
+				 lu_object_fid(&dt->do_lu), rec, key);
 	if (rc != 0) {
 		CERROR("%s: Insert update error: rc = %d\n",
 		       dt_dev->dd_lu_dev.ld_obd->obd_name, rc);
@@ -511,7 +530,7 @@ out:
 	if (req != NULL)
 		ptlrpc_req_finished(req);
 
-	dt_update_request_destroy(update);
+	osp_update_request_destroy(env, update);
 
 	return rc;
 }
@@ -519,7 +538,7 @@ out:
 /**
  * Implementation of dt_index_operations::dio_declare_insert
  *
- * Create the dt_update_request to track the update for this OSP
+ * Create the osp_update_request to track the update for this OSP
  * in the transaction.
  *
  * \param[in] env	execution environment
@@ -551,34 +570,29 @@ static int osp_md_declare_index_insert(const struct lu_env *env,
  * \param[in] rec	record of the index to be inserted
  * \param[in] key	key of the index to be inserted
  * \param[in] th	the transaction handle
- * \param[in] ignore_quota quota enforcement for insert
  *
  * \retval		0 if packing index insert succeeds.
  * \retval		negative errno if packing fails.
  */
-static int osp_md_index_insert(const struct lu_env *env,
-			       struct dt_object *dt,
+static int osp_md_index_insert(const struct lu_env *env, struct dt_object *dt,
 			       const struct dt_rec *rec,
-			       const struct dt_key *key,
-			       struct thandle *th,
-			       int ignore_quota)
+			       const struct dt_key *key, struct thandle *th)
 {
-	struct osp_thandle	 *oth = thandle_to_osp_thandle(th);
-	struct dt_update_request *update = oth->ot_dur;
-	int			 rc;
-
+	struct osp_update_request *update;
+	int rc;
 
-	rc = out_index_insert_pack(env, &update->dur_buf,
-				   lu_object_fid(&dt->do_lu), rec, key,
-				   update->dur_batchid);
+	update = thandle_to_osp_update_request(th);
+	LASSERT(update != NULL);
 
+	rc = OSP_UPDATE_RPC_PACK(env, out_index_insert_pack, update,
+				 lu_object_fid(&dt->do_lu), rec, key);
 	return rc;
 }
 
 /**
  * Implementation of dt_index_operations::dio_declare_delete
  *
- * Create the dt_update_request to track the update for this OSP
+ * Create the osp_update_request to track the update for this OSP
  * in the transaction.
  *
  * \param[in] env	execution environment
@@ -616,15 +630,15 @@ static int osp_md_index_delete(const struct lu_env *env,
 			       const struct dt_key *key,
 			       struct thandle *th)
 {
-	struct dt_update_request *update;
+	struct osp_update_request *update;
 	int			 rc;
 
-	update = thandle_to_dt_update_request(th);
+	update = thandle_to_osp_update_request(th);
 	LASSERT(update != NULL);
 
-	rc = out_index_delete_pack(env, &update->dur_buf,
-				   lu_object_fid(&dt->do_lu), key,
-				   update->dur_batchid);
+	rc = OSP_UPDATE_RPC_PACK(env, out_index_delete_pack, update,
+				 lu_object_fid(&dt->do_lu), key);
+
 	return rc;
 }
 
@@ -638,7 +652,7 @@ static int osp_md_index_delete(const struct lu_env *env,
  * \param[in] env	execution environment
  * \param[in] di	iterator of this iteration
  *
- * \retval		0 if the pointer is advanced successfuly.
+ * \retval		0 if the pointer is advanced successfully.
  * \retval		1 if it reaches to the end of the index object.
  * \retval		negative errno if the pointer cannot be advanced.
  */
@@ -801,6 +815,95 @@ const struct dt_index_operations osp_md_index_ops = {
 };
 
 /**
+ * Implement OSP layer dt_object_operations::do_xattr_list() interface.
+ *
+ * List extended attribute from the specified MDT/OST object, result is not
+ * cached because this is called by directory migration only.
+ *
+ * \param[in] env	pointer to the thread context
+ * \param[in] dt	pointer to the OSP layer dt_object
+ * \param[out] buf	pointer to the lu_buf to hold the extended attribute
+ *
+ * \retval		positive bytes used/required in the buffer
+ * \retval		negative error number on failure
+ */
+static int osp_md_xattr_list(const struct lu_env *env, struct dt_object *dt,
+			     const struct lu_buf *buf)
+{
+	struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
+	struct osp_object *obj = dt2osp_obj(dt);
+	struct dt_device *dev = &osp->opd_dt_dev;
+	struct lu_buf *rbuf = &osp_env_info(env)->osi_lb2;
+	struct osp_update_request *update = NULL;
+	struct ptlrpc_request *req = NULL;
+	struct object_update_reply *reply;
+	const char *dname  = dt->do_lu.lo_dev->ld_obd->obd_name;
+	int rc = 0;
+
+	ENTRY;
+
+	LASSERT(buf);
+
+	if (unlikely(obj->opo_non_exist))
+		RETURN(-ENOENT);
+
+	update = osp_update_request_create(dev);
+	if (IS_ERR(update))
+		RETURN(PTR_ERR(update));
+
+	rc = OSP_UPDATE_RPC_PACK(env, out_xattr_list_pack, update,
+				 lu_object_fid(&dt->do_lu), buf->lb_len);
+	if (rc) {
+		CERROR("%s: Insert update error "DFID": rc = %d\n",
+		       dname, PFID(lu_object_fid(&dt->do_lu)), rc);
+		GOTO(out, rc);
+	}
+
+	rc = osp_remote_sync(env, osp, update, &req);
+	if (rc < 0) {
+		if (rc == -ENOENT) {
+			dt->do_lu.lo_header->loh_attr &= ~LOHA_EXISTS;
+			obj->opo_non_exist = 1;
+		}
+		GOTO(out, rc);
+	}
+
+	reply = req_capsule_server_sized_get(&req->rq_pill,
+					     &RMF_OUT_UPDATE_REPLY,
+					     OUT_UPDATE_REPLY_SIZE);
+	if (reply->ourp_magic != UPDATE_REPLY_MAGIC) {
+		DEBUG_REQ(D_ERROR, req,
+			  "%s: Wrong version %x expected %x "DFID": rc = %d",
+			  dname, reply->ourp_magic, UPDATE_REPLY_MAGIC,
+			  PFID(lu_object_fid(&dt->do_lu)), -EPROTO);
+
+		GOTO(out, rc = -EPROTO);
+	}
+
+	rc = object_update_result_data_get(reply, rbuf, 0);
+	if (rc < 0)
+		GOTO(out, rc);
+
+	if (!buf->lb_buf)
+		GOTO(out, rc);
+
+	if (unlikely(buf->lb_len < rbuf->lb_len))
+		GOTO(out, rc = -ERANGE);
+
+	memcpy(buf->lb_buf, rbuf->lb_buf, rbuf->lb_len);
+	EXIT;
+
+out:
+	if (req)
+		ptlrpc_req_finished(req);
+
+	if (update && !IS_ERR(update))
+		osp_update_request_destroy(env, update);
+
+	return rc;
+}
+
+/**
  * Implementation of dt_object_operations::do_index_try
  *
  * Try to initialize the index API pointer for the given object. This
@@ -826,7 +929,9 @@ static int osp_md_index_try(const struct lu_env *env,
  * Implementation of dt_object_operations::do_object_lock
  *
  * Enqueue a lock (by ldlm_cli_enqueue()) of remote object on the remote MDT,
- * which will lock the object in the global namespace.
+ * which will lock the object in the global namespace. And because the
+ * cross-MDT locks are relatively rare compared with normal local MDT operation,
+ * let's release it right away, instead of putting it into the LRU list.
  *
  * \param[in] env	execution environment
  * \param[in] dt	object to be locked
@@ -841,37 +946,33 @@ static int osp_md_object_lock(const struct lu_env *env,
 			      struct dt_object *dt,
 			      struct lustre_handle *lh,
 			      struct ldlm_enqueue_info *einfo,
-			      ldlm_policy_data_t *policy)
+			      union ldlm_policy_data *policy)
 {
 	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 osp_device	*osp = dt2osp_dev(lu2dt_dev(dt->do_lu.lo_dev));
 	struct ptlrpc_request	*req;
 	int			rc = 0;
-	__u64			flags = 0;
-	ldlm_mode_t		mode;
+	__u64			flags = LDLM_FL_NO_LRU;
+	ENTRY;
 
 	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, policy,
-			       einfo->ei_mode, lh, 0);
-	if (mode > 0)
-		return ELDLM_OK;
+	if (einfo->ei_mode & (LCK_EX | LCK_PW))
+		flags |= LDLM_FL_COS_INCOMPAT;
 
 	req = ldlm_enqueue_pack(osp->opd_exp, 0);
 	if (IS_ERR(req))
 		RETURN(PTR_ERR(req));
 
+	osp_set_req_replay(osp, req);
 	rc = ldlm_cli_enqueue(osp->opd_exp, &req, einfo, res_id,
-			      (const ldlm_policy_data_t *)policy,
+			      (const union ldlm_policy_data *)policy,
 			      &flags, NULL, 0, LVB_T_NONE, lh, 0);
 
 	ptlrpc_req_finished(req);
 
-	return rc == ELDLM_OK ? 0 : -EIO;
+	RETURN(rc == ELDLM_OK ? 0 : -EIO);
 }
 
 /**
@@ -889,7 +990,7 @@ static int osp_md_object_lock(const struct lu_env *env,
 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)
+				union ldlm_policy_data *policy)
 {
 	struct lustre_handle	*lockh = einfo->ei_cbdata;
 
@@ -912,8 +1013,8 @@ static int osp_md_object_unlock(const struct lu_env *env,
  * \retval		0 for success
  * \retval		negative error number on failure
  */
-int osp_md_declare_object_destroy(const struct lu_env *env,
-			       struct dt_object *dt, struct thandle *th)
+int osp_md_declare_destroy(const struct lu_env *env, struct dt_object *dt,
+			   struct thandle *th)
 {
 	return osp_trans_update_request_create(th);
 }
@@ -933,51 +1034,53 @@ int osp_md_declare_object_destroy(const struct lu_env *env,
  * \retval		0 for success
  * \retval		negative error number on failure
  */
-int osp_md_object_destroy(const struct lu_env *env, struct dt_object *dt,
-			  struct thandle *th)
+int osp_md_destroy(const struct lu_env *env, struct dt_object *dt,
+		   struct thandle *th)
 {
-	struct osp_object		*o = dt2osp_obj(dt);
-	struct osp_device		*osp = lu2osp_dev(dt->do_lu.lo_dev);
-	struct dt_update_request	*update;
-	int				rc = 0;
+	struct osp_object *o = dt2osp_obj(dt);
+	struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
+	struct osp_update_request *update;
+	int rc = 0;
 
 	ENTRY;
 	o->opo_non_exist = 1;
 
 	LASSERT(osp->opd_connect_mdt);
-	update = thandle_to_dt_update_request(th);
+	update = thandle_to_osp_update_request(th);
 	LASSERT(update != NULL);
 
-	rc = out_object_destroy_pack(env, &update->dur_buf,
-		       lu_object_fid(&dt->do_lu), update->dur_batchid);
+	rc = OSP_UPDATE_RPC_PACK(env, out_destroy_pack, update,
+				 lu_object_fid(&dt->do_lu));
 	if (rc != 0)
 		RETURN(rc);
 
-	/* not needed in cache any more */
 	set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
+	rc = osp_insert_update_callback(env, update, dt2osp_obj(dt), NULL,
+					NULL);
 
 	RETURN(rc);
 }
 
 struct dt_object_operations osp_md_obj_ops = {
-	.do_read_lock         = osp_md_object_read_lock,
-	.do_write_lock        = osp_md_object_write_lock,
-	.do_read_unlock       = osp_md_object_read_unlock,
-	.do_write_unlock      = osp_md_object_write_unlock,
-	.do_write_locked      = osp_md_object_write_locked,
-	.do_declare_create    = osp_md_declare_object_create,
-	.do_create            = osp_md_object_create,
+	.do_read_lock         = osp_md_read_lock,
+	.do_write_lock        = osp_md_write_lock,
+	.do_read_unlock       = osp_md_read_unlock,
+	.do_write_unlock      = osp_md_write_unlock,
+	.do_write_locked      = osp_md_write_locked,
+	.do_declare_create    = osp_md_declare_create,
+	.do_create            = osp_md_create,
 	.do_declare_ref_add   = osp_md_declare_ref_add,
 	.do_ref_add           = osp_md_ref_add,
 	.do_declare_ref_del   = osp_md_declare_ref_del,
 	.do_ref_del           = osp_md_ref_del,
-	.do_declare_destroy   = osp_md_declare_object_destroy,
-	.do_destroy           = osp_md_object_destroy,
+	.do_declare_destroy   = osp_md_declare_destroy,
+	.do_destroy           = osp_md_destroy,
 	.do_ah_init           = osp_md_ah_init,
 	.do_attr_get	      = osp_attr_get,
 	.do_declare_attr_set  = osp_md_declare_attr_set,
 	.do_attr_set          = osp_md_attr_set,
 	.do_xattr_get         = osp_xattr_get,
+	.do_xattr_list	      = osp_md_xattr_list,
 	.do_declare_xattr_set = osp_declare_xattr_set,
 	.do_xattr_set         = osp_xattr_set,
 	.do_declare_xattr_del = osp_declare_xattr_del,
@@ -985,12 +1088,13 @@ struct dt_object_operations osp_md_obj_ops = {
 	.do_index_try         = osp_md_index_try,
 	.do_object_lock       = osp_md_object_lock,
 	.do_object_unlock     = osp_md_object_unlock,
+	.do_invalidate	      = osp_invalidate,
 };
 
 /**
  * Implementation of dt_body_operations::dbo_declare_write
  *
- * Create the dt_update_request to track the update for this OSP
+ * Create the osp_update_request to track the update for this OSP
  * in the transaction.
   *
  * \param[in] env	execution environment
@@ -1007,7 +1111,20 @@ static ssize_t osp_md_declare_write(const struct lu_env *env,
 				    const struct lu_buf *buf,
 				    loff_t pos, struct thandle *th)
 {
-	return osp_trans_update_request_create(th);
+	struct osp_device *osp = dt2osp_dev(th->th_dev);
+	int rc;
+
+	rc = osp_trans_update_request_create(th);
+	if (rc != 0)
+		return rc;
+
+	if (osp->opd_update == NULL)
+		return 0;
+
+	if (dt2osp_obj(dt)->opo_stale)
+		return -ESTALE;
+
+	return 0;
 }
 
 /**
@@ -1021,33 +1138,162 @@ static ssize_t osp_md_declare_write(const struct lu_env *env,
  * \param[in] buf	buffer to write which includes an embedded size field
  * \param[in] pos	offet in the object to start writing at
  * \param[in] th	transaction handle
- * \param[in] ignore_quota quota enforcement for this write
  *
  * \retval		the buffer size in bytes if packing succeeds.
  * \retval		negative errno if packing fails.
  */
 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 *th, int ignore_quota)
+			    struct thandle *th)
 {
-	struct dt_update_request  *update;
+	struct osp_object	  *obj = dt2osp_obj(dt);
+	struct osp_update_request  *update;
+	struct osp_thandle	  *oth = thandle_to_osp_thandle(th);
 	ssize_t			  rc;
+	ENTRY;
 
-	update = thandle_to_dt_update_request(th);
+	update = thandle_to_osp_update_request(th);
 	LASSERT(update != NULL);
 
-	rc = out_write_pack(env, &update->dur_buf, lu_object_fid(&dt->do_lu),
-			    buf, *pos, update->dur_batchid);
+	CDEBUG(D_INFO, "write "DFID" offset = %llu length = %zu\n",
+	       PFID(lu_object_fid(&dt->do_lu)), *pos, buf->lb_len);
+
+	rc = OSP_UPDATE_RPC_PACK(env, out_write_pack, update,
+				 lu_object_fid(&dt->do_lu), buf, *pos);
 	if (rc < 0)
-		return rc;
+		RETURN(rc);
+
+	rc = osp_check_and_set_rpc_version(oth, obj);
+	if (rc < 0)
+		RETURN(rc);
 
 	/* XXX: how about the write error happened later? */
 	*pos += buf->lb_len;
-	return buf->lb_len;
+
+	if (obj->opo_attr.la_valid & LA_SIZE && obj->opo_attr.la_size < *pos)
+		obj->opo_attr.la_size = *pos;
+
+	spin_lock(&obj->opo_lock);
+	if (list_empty(&obj->opo_invalidate_cb_list)) {
+		lu_object_get(&obj->opo_obj.do_lu);
+
+		list_add_tail(&obj->opo_invalidate_cb_list,
+			      &update->our_invalidate_cb_list);
+	}
+	spin_unlock(&obj->opo_lock);
+
+	RETURN(buf->lb_len);
+}
+
+static inline void orr_le_to_cpu(struct out_read_reply *orr_dst,
+				 const struct out_read_reply *orr_src)
+{
+	orr_dst->orr_size = le32_to_cpu(orr_src->orr_size);
+	orr_dst->orr_padding = le32_to_cpu(orr_src->orr_padding);
+	orr_dst->orr_offset = le64_to_cpu(orr_dst->orr_offset);
+}
+
+
+
+static ssize_t osp_md_read(const struct lu_env *env, struct dt_object *dt,
+			   struct lu_buf *rbuf, loff_t *pos)
+{
+	struct osp_device *osp = lu2osp_dev(dt->do_lu.lo_dev);
+	struct dt_device *dt_dev	= &osp->opd_dt_dev;
+	struct lu_buf *lbuf = &osp_env_info(env)->osi_lb2;
+	char *ptr = rbuf->lb_buf;
+	struct osp_update_request *update;
+	struct ptlrpc_request *req = NULL;
+	struct out_read_reply *orr;
+	struct ptlrpc_bulk_desc *desc;
+	struct object_update_reply *reply;
+	int pages;
+	int rc;
+	ENTRY;
+
+	/* Because it needs send the update buffer right away,
+	 * just create an update buffer, instead of attaching the
+	 * update_remote list of the thandle.  */
+	update = osp_update_request_create(dt_dev);
+	if (IS_ERR(update))
+		RETURN(PTR_ERR(update));
+
+	rc = OSP_UPDATE_RPC_PACK(env, out_read_pack, update,
+				 lu_object_fid(&dt->do_lu),
+				 rbuf->lb_len, *pos);
+	if (rc != 0) {
+		CERROR("%s: cannot insert update: rc = %d\n",
+		       dt_dev->dd_lu_dev.ld_obd->obd_name, rc);
+		GOTO(out_update, rc);
+	}
+
+	CDEBUG(D_INFO, "%s "DFID" read offset %llu size %zu\n",
+	       dt_dev->dd_lu_dev.ld_obd->obd_name,
+	       PFID(lu_object_fid(&dt->do_lu)), *pos, rbuf->lb_len);
+	rc = osp_prep_update_req(env, osp->opd_obd->u.cli.cl_import, update,
+				 &req);
+	if (rc != 0)
+		GOTO(out_update, rc);
+
+	/* First *and* last might be partial pages, hence +1 */
+	pages = DIV_ROUND_UP(rbuf->lb_len, PAGE_SIZE) + 1;
+
+	/* allocate bulk descriptor */
+	desc = ptlrpc_prep_bulk_imp(req, pages, 1,
+				    PTLRPC_BULK_PUT_SINK | PTLRPC_BULK_BUF_KIOV,
+				    MDS_BULK_PORTAL,
+				    &ptlrpc_bulk_kiov_nopin_ops);
+	if (desc == NULL)
+		GOTO(out, rc = -ENOMEM);
+
+	desc->bd_frag_ops->add_iov_frag(desc, ptr, rbuf->lb_len);
+
+	osp_set_req_replay(osp, req);
+	req->rq_bulk_read = 1;
+	/* send request to master and wait for RPC to complete */
+	rc = ptlrpc_queue_wait(req);
+	if (rc != 0)
+		GOTO(out, rc);
+
+	rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk,
+					  req->rq_bulk->bd_nob_transferred);
+	if (rc < 0)
+		GOTO(out, rc);
+
+	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: invalid update reply magic %x expected %x:"
+		       " rc = %d\n", dt_dev->dd_lu_dev.ld_obd->obd_name,
+		       reply->ourp_magic, UPDATE_REPLY_MAGIC, -EPROTO);
+		GOTO(out, rc = -EPROTO);
+	}
+
+	rc = object_update_result_data_get(reply, lbuf, 0);
+	if (rc < 0)
+		GOTO(out, rc);
+
+	if (lbuf->lb_len < sizeof(*orr))
+		GOTO(out, rc = -EPROTO);
+
+	orr = lbuf->lb_buf;
+	orr_le_to_cpu(orr, orr);
+	rc = orr->orr_size;
+	*pos = orr->orr_offset;
+out:
+	ptlrpc_req_finished(req);
+
+out_update:
+	osp_update_request_destroy(env, update);
+
+	RETURN(rc);
 }
 
 /* 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,
+	.dbo_read		= osp_md_read,
 };