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LU-5223 lmv: build master LMV EA dynamically build via readdir
[fs/lustre-release.git] / lustre / osp / osp_md_object.c
index f9b8aaa..d84a259 100644 (file)
  * Author: Di Wang <di.wang@intel.com>
  */
 
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
 #define DEBUG_SUBSYSTEM S_MDS
 
 #include <lustre_log.h>
-#include <lustre_update.h>
 #include "osp_internal.h"
+
 static const char dot[] = ".";
 static const char dotdot[] = "..";
 
-static int osp_prep_update_req(const struct lu_env *env,
-                              struct osp_device *osp,
-                              struct update_buf *ubuf, int ubuf_len,
-                              struct ptlrpc_request **reqp)
-{
-       struct obd_import      *imp;
-       struct ptlrpc_request  *req;
-       struct update_buf      *tmp;
-       int                     rc;
-       ENTRY;
-
-       imp = osp->opd_obd->u.cli.cl_import;
-       LASSERT(imp);
-
-       req = ptlrpc_request_alloc(imp, &RQF_UPDATE_OBJ);
-       if (req == NULL)
-               RETURN(-ENOMEM);
-
-       req_capsule_set_size(&req->rq_pill, &RMF_UPDATE, RCL_CLIENT,
-                            UPDATE_BUFFER_SIZE);
-
-       rc = ptlrpc_request_pack(req, LUSTRE_MDS_VERSION, UPDATE_OBJ);
-       if (rc != 0) {
-               ptlrpc_req_finished(req);
-               RETURN(rc);
-       }
-
-       req_capsule_set_size(&req->rq_pill, &RMF_UPDATE_REPLY, RCL_SERVER,
-                            UPDATE_BUFFER_SIZE);
-
-       tmp = req_capsule_client_get(&req->rq_pill, &RMF_UPDATE);
-       memcpy(tmp, ubuf, ubuf_len);
-
-       ptlrpc_request_set_replen(req);
-
-       *reqp = req;
-
-       RETURN(rc);
-}
-
-static int osp_remote_sync(const struct lu_env *env, struct dt_device *dt,
-                          struct update_request *update,
-                          struct ptlrpc_request **reqp)
-{
-       struct osp_device       *osp = dt2osp_dev(dt);
-       struct ptlrpc_request   *req = NULL;
-       int                     rc;
-       ENTRY;
-
-       rc = osp_prep_update_req(env, osp, update->ur_buf, UPDATE_BUFFER_SIZE,
-                                &req);
-       if (rc)
-               RETURN(rc);
-
-       /* Note: some dt index api might return non-zero result here, like
-        * osd_index_ea_lookup, so we should only check rc < 0 here */
-       rc = ptlrpc_queue_wait(req);
-       if (rc < 0) {
-               ptlrpc_req_finished(req);
-               update->ur_rc = rc;
-               RETURN(rc);
-       }
-
-       if (reqp != NULL) {
-               *reqp = req;
-               RETURN(rc);
-       }
-
-       update->ur_rc = rc;
-
-       ptlrpc_req_finished(req);
-
-       RETURN(rc);
-}
-
-/**
- * Create a new update request for the device.
- */
-static struct update_request
-*osp_create_update_req(struct dt_device *dt)
-{
-       struct update_request *update;
-
-       OBD_ALLOC_PTR(update);
-       if (!update)
-               return ERR_PTR(-ENOMEM);
-
-       OBD_ALLOC_LARGE(update->ur_buf, UPDATE_BUFFER_SIZE);
-       if (update->ur_buf == NULL) {
-               OBD_FREE_PTR(update);
-               return ERR_PTR(-ENOMEM);
-       }
-
-       CFS_INIT_LIST_HEAD(&update->ur_list);
-       update->ur_dt = dt;
-       update->ur_batchid = 0;
-       update->ur_buf->ub_magic = UPDATE_BUFFER_MAGIC;
-       update->ur_buf->ub_count = 0;
-
-       return update;
-}
-
-static void osp_destroy_update_req(struct update_request *update)
-{
-       if (update == NULL)
-               return;
-
-       cfs_list_del(&update->ur_list);
-       if (update->ur_buf != NULL)
-               OBD_FREE_LARGE(update->ur_buf, UPDATE_BUFFER_SIZE);
-
-       OBD_FREE_PTR(update);
-       return;
-}
-
-int osp_trans_stop(const struct lu_env *env, struct thandle *th)
-{
-       int rc = 0;
-
-       osp_destroy_update_req(th->th_current_request);
-       rc = th->th_current_request->ur_rc;
-       th->th_current_request = NULL;
-
-       return rc;
-}
-
-/**
- * In DNE phase I, all remote updates will be packed into RPC (the format
- * description is in lustre_idl.h) during declare phase, all of updates
- * are attached to the transaction, one entry per OSP. Then in trans start,
- * LOD will walk through these entries and send these UPDATEs to the remote
- * MDT to be executed synchronously.
- */
-int osp_trans_start(const struct lu_env *env, struct dt_device *dt,
-                   struct thandle *th)
-{
-       struct update_request *update;
-       int rc = 0;
-
-       /* In phase I, if the transaction includes remote updates, the local
-        * update should be synchronized, so it will set th_sync = 1 */
-       update = th->th_current_request;
-       LASSERT(update != NULL && update->ur_dt == dt);
-       if (update->ur_buf->ub_count > 0) {
-               rc = osp_remote_sync(env, dt, update, NULL);
-               th->th_sync = 1;
-       }
-
-       RETURN(rc);
-}
-
-/**
- * Insert the update into the th_bufs for the device.
- */
-static int osp_insert_update(const struct lu_env *env,
-                            struct update_request *update, int op,
-                            struct lu_fid *fid, int count,
-                            int *lens, char **bufs)
-{
-       struct update_buf    *ubuf = update->ur_buf;
-       struct update        *obj_update;
-       char                 *ptr;
-       int                   i;
-       int                   update_length;
-       int                   rc = 0;
-       ENTRY;
-
-       obj_update = (struct update *)((char *)ubuf +
-                     cfs_size_round(update_buf_size(ubuf)));
-
-       /* Check update size to make sure it can fit into the buffer */
-       update_length = cfs_size_round(offsetof(struct update,
-                                      u_bufs[0]));
-       for (i = 0; i < count; i++)
-               update_length += cfs_size_round(lens[i]);
-
-       if (cfs_size_round(update_buf_size(ubuf)) + update_length >
-           UPDATE_BUFFER_SIZE || ubuf->ub_count >= UPDATE_MAX_OPS) {
-               CERROR("%s: insert up %p, idx %d cnt %d len %lu: rc = %d\n",
-                       update->ur_dt->dd_lu_dev.ld_obd->obd_name, ubuf,
-                       update_length, ubuf->ub_count, update_buf_size(ubuf),
-                       -E2BIG);
-               RETURN(-E2BIG);
-       }
-
-       if (count > UPDATE_BUF_COUNT) {
-               CERROR("%s: Insert too much params %d "DFID" op %d: rc = %d\n",
-                       update->ur_dt->dd_lu_dev.ld_obd->obd_name, count,
-                       PFID(fid), op, -E2BIG);
-               RETURN(-E2BIG);
-       }
-
-       /* fill the update into the update buffer */
-       fid_cpu_to_le(&obj_update->u_fid, fid);
-       obj_update->u_type = cpu_to_le32(op);
-       obj_update->u_batchid = update->ur_batchid;
-       for (i = 0; i < count; i++)
-               obj_update->u_lens[i] = cpu_to_le32(lens[i]);
-
-       ptr = (char *)obj_update +
-                       cfs_size_round(offsetof(struct update, u_bufs[0]));
-       for (i = 0; i < count; i++)
-               LOGL(bufs[i], lens[i], ptr);
-
-       ubuf->ub_count++;
-
-       CDEBUG(D_INFO, "%s: %p "DFID" idx %d: op %d params %d:%lu\n",
-              update->ur_dt->dd_lu_dev.ld_obd->obd_name, ubuf, PFID(fid),
-              ubuf->ub_count, op, count, update_buf_size(ubuf));
-
-       RETURN(rc);
-}
-
-static struct update_request
-*osp_find_update(struct thandle *th, struct dt_device *dt_dev)
-{
-       struct update_request   *update;
-
-       /* Because transaction api does not proivde the interface
-        * to transfer the update from LOD to OSP,  we need walk
-        * remote update list to find the update, this probably
-        * should move to LOD layer, when update can be part of
-        * the trancation api parameter. XXX */
-       cfs_list_for_each_entry(update, &th->th_remote_update_list, ur_list) {
-               if (update->ur_dt == dt_dev)
-                       return update;
-       }
-       return NULL;
-}
-
-static inline void osp_md_add_update_batchid(struct update_request *update)
-{
-       update->ur_batchid++;
-}
-
-/**
- * Find one loc in th_dev/dev_obj_update for the update,
- * Because only one thread can access this thandle, no need
- * lock now.
- */
-static struct update_request
-*osp_find_create_update_loc(struct thandle *th, struct dt_object *dt)
-{
-       struct dt_device        *dt_dev = lu2dt_dev(dt->do_lu.lo_dev);
-       struct update_request   *update;
-       ENTRY;
-
-       update = osp_find_update(th, dt_dev);
-       if (update != NULL)
-               RETURN(update);
-
-       update = osp_create_update_req(dt_dev);
-       if (IS_ERR(update))
-               RETURN(update);
-
-       cfs_list_add_tail(&update->ur_list, &th->th_remote_update_list);
-
-       RETURN(update);
-}
-
-static int osp_get_attr_from_req(const struct lu_env *env,
-                                struct ptlrpc_request *req,
-                                struct lu_attr *attr, int index)
-{
-       struct update_reply     *reply;
-       struct obdo             *lobdo = &osp_env_info(env)->osi_obdo;
-       struct obdo             *wobdo;
-       int                     size;
-
-       LASSERT(attr != NULL);
-
-       reply = req_capsule_server_sized_get(&req->rq_pill, &RMF_UPDATE_REPLY,
-                                            UPDATE_BUFFER_SIZE);
-       if (reply->ur_version != UPDATE_REPLY_V1)
-               return -EPROTO;
-
-       size = update_get_reply_buf(reply, (void **)&wobdo, index);
-       if (size != sizeof(struct obdo))
-               return -EPROTO;
-
-       obdo_le_to_cpu(wobdo, wobdo);
-       lustre_get_wire_obdo(lobdo, wobdo);
-       la_from_obdo(attr, lobdo, lobdo->o_valid);
-
-       return 0;
-}
-
-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 = osp_find_create_update_loc(th, dt);
+       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,
@@ -353,22 +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(&osi->osi_obdo, &osi->osi_obdo);
-       obdo_cpu_to_le(&osi->osi_obdo, &osi->osi_obdo);
+       lustre_set_wire_obdo(NULL, &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++;
        }
 
@@ -389,20 +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 = osp_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 = osp_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 = osp_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);
@@ -410,11 +115,11 @@ static int osp_md_declare_object_create(const struct lu_env *env,
                dt->do_lu.lo_header->loh_attr &= ~LOHA_EXISTS;
                /* Increase batchid to add this orphan object deletion
                 * to separate transaction */
-               osp_md_add_update_batchid(update);
+               update_inc_batchid(update);
        }
 
-       rc = osp_insert_update(env, update, OBJ_CREATE, fid1, buf_count, sizes,
-                              bufs);
+       rc = out_insert_update(env, update, OUT_CREATE, fid1, buf_count, sizes,
+                              (const char **)bufs);
 out:
        if (rc)
                CERROR("%s: Insert update error: rc = %d\n",
@@ -423,14 +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));
 
@@ -438,7 +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;
 }
@@ -447,11 +147,11 @@ 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 = osp_find_create_update_loc(th, dt);
+       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,
@@ -461,7 +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 = osp_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;
 }
@@ -479,11 +179,11 @@ 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 = osp_find_create_update_loc(th, dt);
+       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,
@@ -493,7 +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 = osp_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;
 }
@@ -512,28 +212,25 @@ static void osp_md_ah_init(const struct lu_env *env,
                           struct dt_allocation_hint *ah,
                           struct dt_object *parent,
                           struct dt_object *child,
-                          cfs_umode_t child_mode)
+                          umode_t child_mode)
 {
        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;
-
-       update = osp_find_create_update_loc(th, dt);
+       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)) {
                CERROR("%s: Get OSP update buf failed: %d\n",
                       dt->do_lu.lo_dev->ld_obd->obd_name,
@@ -542,23 +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(&osi->osi_obdo, &osi->osi_obdo);
-       obdo_cpu_to_le(&osi->osi_obdo, &osi->osi_obdo);
+       lustre_set_wire_obdo(NULL, &osi->osi_obdo, &osi->osi_obdo);
 
        buf = (char *)&osi->osi_obdo;
        fid = (struct lu_fid *)lu_object_fid(&dt->do_lu);
 
-       rc = osp_insert_update(env, update, OBJ_ATTR_SET, fid, 1, &size, &buf);
+       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));
@@ -566,113 +262,6 @@ static int osp_md_attr_set(const struct lu_env *env, struct dt_object *dt,
        RETURN(0);
 }
 
-static int osp_md_declare_xattr_set(const struct lu_env *env,
-                                   struct dt_object *dt,
-                                   const struct lu_buf *buf,
-                                   const char *name, int flag,
-                                   struct thandle *th)
-{
-       struct update_request   *update;
-       struct lu_fid           *fid;
-       int                     sizes[3] = {strlen(name), buf->lb_len,
-                                           sizeof(int)};
-       char                    *bufs[3] = {(char *)name, (char *)buf->lb_buf };
-       int                     rc;
-
-       update = osp_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);
-       }
-
-       flag = cpu_to_le32(flag);
-       bufs[2] = (char *)&flag;
-
-       fid = (struct lu_fid *)lu_object_fid(&dt->do_lu);
-       rc = osp_insert_update(env, update, OBJ_XATTR_SET, fid,
-                              ARRAY_SIZE(sizes), sizes, bufs);
-
-       return rc;
-}
-
-static int osp_md_xattr_set(const struct lu_env *env, struct dt_object *dt,
-                           const struct lu_buf *buf, const char *name, int fl,
-                           struct thandle *th, struct lustre_capa *capa)
-{
-       CDEBUG(D_INFO, "xattr %s set object "DFID"\n", name,
-              PFID(&dt->do_lu.lo_header->loh_fid));
-
-       return 0;
-}
-
-static int osp_md_xattr_get(const struct lu_env *env, struct dt_object *dt,
-                           struct lu_buf *buf, const char *name,
-                           struct lustre_capa *capa)
-{
-       struct dt_device        *dt_dev = lu2dt_dev(dt->do_lu.lo_dev);
-       struct update_request   *update = NULL;
-       struct ptlrpc_request   *req = NULL;
-       int                     rc;
-       int                     buf_len;
-       int                     size;
-       struct update_reply     *reply;
-       void                    *ea_buf;
-       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_create_update_req(dt_dev);
-       if (IS_ERR(update))
-               RETURN(PTR_ERR(update));
-
-       LASSERT(name != NULL);
-       buf_len = strlen(name);
-       rc = osp_insert_update(env, update, OBJ_XATTR_GET,
-                              (struct lu_fid *)lu_object_fid(&dt->do_lu),
-                              1, &buf_len, (char **)&name);
-       if (rc != 0) {
-               CERROR("%s: Insert update error: rc = %d\n",
-                      dt->do_lu.lo_dev->ld_obd->obd_name, rc);
-               GOTO(out, rc);
-       }
-       dt_dev = lu2dt_dev(dt->do_lu.lo_dev);
-
-       rc = osp_remote_sync(env, dt_dev, update, &req);
-       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) {
-               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);
-               GOTO(out, rc = -EPROTO);
-       }
-
-       size = update_get_reply_buf(reply, &ea_buf, 0);
-       if (size < 0)
-               GOTO(out, rc = size);
-
-       LASSERT(size > 0 && size < CFS_PAGE_SIZE);
-       LASSERT(ea_buf != NULL);
-
-       buf->lb_len = size;
-       memcpy(buf->lb_buf, ea_buf, size);
-out:
-       if (req != NULL)
-               ptlrpc_req_finished(req);
-
-       if (update != NULL)
-               osp_destroy_update_req(update);
-
-       RETURN(rc);
-}
-
 static void osp_md_object_read_lock(const struct lu_env *env,
                                    struct dt_object *dt, unsigned role)
 {
@@ -725,87 +314,81 @@ static int osp_md_index_lookup(const struct lu_env *env, struct dt_object *dt,
                               struct dt_rec *rec, const struct dt_key *key,
                               struct lustre_capa *capa)
 {
-       struct dt_device        *dt_dev = lu2dt_dev(dt->do_lu.lo_dev);
-       struct update_request   *update;
-       struct ptlrpc_request   *req = NULL;
-       int                     size = strlen((char *)key) + 1;
-       char                    *name = (char *)key;
-       int                     rc;
-       struct update_reply     *reply;
-       struct lu_fid           *fid;
-
+       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 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,
         * just create an update buffer, instead of attaching the
         * update_remote list of the thandle.
         */
-       update = osp_create_update_req(dt_dev);
+       update = out_create_update_req(dt_dev);
        if (IS_ERR(update))
                RETURN(PTR_ERR(update));
 
-       rc = osp_insert_update(env, update, OBJ_INDEX_LOOKUP,
-                              (struct lu_fid *)lu_object_fid(&dt->do_lu),
-                              1, &size, (char **)&name);
+       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);
                GOTO(out, rc);
        }
 
-       rc = osp_remote_sync(env, dt_dev, update, &req);
-       if (rc < 0) {
-               CERROR("%s: lookup "DFID" %s failed: rc = %d\n",
-                      dt_dev->dd_lu_dev.ld_obd->obd_name,
-                      PFID(lu_object_fid(&dt->do_lu)), (char *)key, rc);
+       rc = out_remote_sync(env, osp->opd_obd->u.cli.cl_import, update, &req);
+       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);
-       }
-
-       size = update_get_reply_buf(reply, (void **)&fid, 0);
-       if (size < 0)
+       rc = object_update_result_data_get(reply, lbuf, 0);
+       if (rc < 0)
                GOTO(out, rc = size);
 
-       if (size != sizeof(struct lu_fid)) {
-               CERROR("%s: lookup "DFID" %s wrong size %d: rc = %d\n",
+       if (lbuf->lb_len != sizeof(*fid)) {
+               CERROR("%s: lookup "DFID" %s wrong size %d\n",
                       dt_dev->dd_lu_dev.ld_obd->obd_name,
-                      PFID(lu_object_fid(&dt->do_lu)), (char *)key, size, rc);
+                      PFID(lu_object_fid(&dt->do_lu)), (char *)key,
+                      (int)lbuf->lb_len);
                GOTO(out, rc = -EINVAL);
        }
 
-       fid_le_to_cpu(fid, fid);
+       fid = lbuf->lb_buf;
+       if (ptlrpc_rep_need_swab(req))
+               lustre_swab_lu_fid(fid);
        if (!fid_is_sane(fid)) {
-               CERROR("%s: lookup "DFID" %s invalid fid "DFID": rc = %d\n",
+               CERROR("%s: lookup "DFID" %s invalid fid "DFID"\n",
                       dt_dev->dd_lu_dev.ld_obd->obd_name,
-                      PFID(lu_object_fid(&dt->do_lu)), (char *)key, PFID(fid),
-                      rc);
+                      PFID(lu_object_fid(&dt->do_lu)), (char *)key, PFID(fid));
                GOTO(out, rc = -EINVAL);
        }
+
        memcpy(rec, fid, sizeof(*fid));
+
+       GOTO(out, rc = 1);
+
 out:
        if (req != NULL)
                ptlrpc_req_finished(req);
 
-       if (update != NULL)
-               osp_destroy_update_req(update);
+       out_destroy_update_req(update);
 
-       RETURN(rc);
+       return rc;
 }
 
 static int osp_md_declare_insert(const struct lu_env *env,
@@ -814,15 +397,15 @@ 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)};
-       char                    *bufs[2] = {(char *)key, (char *)rec_fid};
-       int                     rc;
+       const char               *bufs[2] = {(char *)key, (char *)rec_fid};
+       int                      rc;
 
-       update = osp_find_create_update_loc(th, dt);
+       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,
@@ -838,7 +421,7 @@ static int osp_md_declare_insert(const struct lu_env *env,
 
        fid_cpu_to_le(rec_fid, rec_fid);
 
-       rc = osp_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;
 }
@@ -859,13 +442,12 @@ 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;
-       char *buf = (char *)key;
        int rc;
 
-       update = osp_find_create_update_loc(th, dt);
+       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,
@@ -875,8 +457,8 @@ static int osp_md_declare_delete(const struct lu_env *env,
 
        fid = (struct lu_fid *)lu_object_fid(&dt->do_lu);
 
-       rc = osp_insert_update(env, update, OBJ_INDEX_DELETE, fid, 1, &size,
-                              &buf);
+       rc = out_insert_update(env, update, OUT_INDEX_DELETE, fid, 1, &size,
+                              (const char **)&key);
 
        return rc;
 }
@@ -893,92 +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_md_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)
-{
-       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)
+int osp_md_index_it_next(const struct lu_env *env, struct dt_it *di)
 {
-       struct dt_object *dt = (struct dt_object *)di;
-       lu_object_put(env, &dt->do_lu);
-}
+       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_get(const struct lu_env *env,
-                     struct dt_it *di, const struct dt_key *key)
-{
-       return 1;
-}
+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;
+               }
+       }
 
-static void osp_it_put(const struct lu_env *env, struct dt_it *di)
-{
-       return;
-}
+       rc = osp_it_next_page(env, di);
+       if (rc == 0)
+               goto again;
 
-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 *osp_obj = dt2osp_obj(dt);
-       if (osp_obj->opo_empty)
-               return 1;
-       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,
@@ -989,10 +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,
@@ -1007,90 +599,54 @@ static int osp_md_index_try(const struct lu_env *env,
        return 0;
 }
 
-static int osp_md_attr_get(const struct lu_env *env,
-                          struct dt_object *dt, struct lu_attr *attr,
-                          struct lustre_capa *capa)
+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)
 {
-       struct osp_object     *obj = dt2osp_obj(dt);
-       struct dt_device      *dt_dev = lu2dt_dev(dt->do_lu.lo_dev);
-       struct update_request *update = NULL;
-       struct ptlrpc_request *req = NULL;
-       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_create_update_req(dt_dev);
-       if (IS_ERR(update))
-               RETURN(PTR_ERR(update));
-
-       rc = osp_insert_update(env, update, OBJ_ATTR_GET,
-                              (struct lu_fid *)lu_object_fid(&dt->do_lu),
-                              0, NULL, NULL);
-       if (rc) {
-               CERROR("%s: Insert update error: rc = %d\n",
-                      dt_dev->dd_lu_dev.ld_obd->obd_name, rc);
-               GOTO(out, rc);
-       }
-       dt_dev = lu2dt_dev(dt->do_lu.lo_dev);
-
-       rc = osp_remote_sync(env, dt_dev, update, &req);
-       if (rc < 0)
-               GOTO(out, rc);
-
-       rc = osp_get_attr_from_req(env, req, attr, 0);
-       if (rc)
-               GOTO(out, rc);
+       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;
 
-       if (attr->la_flags == 1)
-               obj->opo_empty = 0;
-       else
-               obj->opo_empty = 1;
-out:
-       if (req != NULL)
-               ptlrpc_req_finished(req);
+       res_id = einfo->ei_res_id;
+       LASSERT(res_id != NULL);
 
-       if (update != NULL)
-               osp_destroy_update_req(update);
+       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;
 
-       RETURN(rc);
-}
+       req = ldlm_enqueue_pack(osp->opd_exp, 0);
+       if (IS_ERR(req))
+               RETURN(PTR_ERR(req));
 
-static int osp_md_declare_object_destroy(const struct lu_env *env,
-                                        struct dt_object *dt,
-                                        struct thandle *th)
-{
-       struct osp_object  *o = dt2osp_obj(dt);
-       int                 rc = 0;
-       ENTRY;
+       rc = ldlm_cli_enqueue(osp->opd_exp, &req, einfo, res_id,
+                             (const ldlm_policy_data_t *)policy,
+                             &flags, NULL, 0, LVB_T_NONE, lh, 0);
 
-       /*
-        * track objects to be destroyed via llog
-        */
-       rc = osp_sync_declare_add(env, o, MDS_UNLINK64_REC, th);
+       ptlrpc_req_finished(req);
 
-       RETURN(rc);
+       return rc == ELDLM_OK ? 0 : -EIO;
 }
 
-static int osp_md_object_destroy(const struct lu_env *env,
-                                struct dt_object *dt, struct thandle *th)
+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 osp_object  *o = dt2osp_obj(dt);
-       int                 rc = 0;
-       ENTRY;
+       struct lustre_handle    *lockh = einfo->ei_cbdata;
 
-       /*
-        * once transaction is committed put proper command on
-        * the queue going to our OST
-        */
-       rc = osp_sync_add(env, o, MDS_UNLINK64_REC, th, NULL);
+       /* unlock finally */
+       ldlm_lock_decref(lockh, einfo->ei_mode);
 
-       /* not needed in cache any more */
-       set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
-
-       RETURN(rc);
+       return 0;
 }
 
 struct dt_object_operations osp_md_obj_ops = {
@@ -1105,57 +661,62 @@ struct dt_object_operations osp_md_obj_ops = {
        .do_ref_add           = osp_md_object_ref_add,
        .do_declare_ref_del   = osp_md_declare_object_ref_del,
        .do_ref_del           = osp_md_object_ref_del,
-       .do_declare_destroy   = osp_md_declare_object_destroy,
-       .do_destroy           = osp_md_object_destroy,
+       .do_declare_destroy   = osp_declare_object_destroy,
+       .do_destroy           = osp_object_destroy,
        .do_ah_init           = osp_md_ah_init,
-       .do_attr_get          = osp_md_attr_get,
+       .do_attr_get          = osp_attr_get,
        .do_declare_attr_set  = osp_md_declare_attr_set,
        .do_attr_set          = osp_md_attr_set,
-       .do_declare_xattr_set = osp_md_declare_xattr_set,
-       .do_xattr_set         = osp_md_xattr_set,
-       .do_xattr_get         = osp_md_xattr_get,
+       .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 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)
+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 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 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;
 
-       fid_build_reg_res_name(lu_object_fid(&dt->do_lu), res_id);
-
-       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_mode, lh, 0);
-       if (mode > 0)
-               return ELDLM_OK;
+       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);
+       }
 
-       req = ldlm_enqueue_pack(osp->opd_exp, 0);
-       if (IS_ERR(req))
-               RETURN(PTR_ERR(req));
+       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);
 
-       rc = ldlm_cli_enqueue(osp->opd_exp, &req, einfo, res_id,
-                             (const ldlm_policy_data_t *)policy,
-                             &flags, NULL, 0, LVB_T_NONE, lh, 0);
+       return rc;
 
-       ptlrpc_req_finished(req);
+}
 
-       return rc == ELDLM_OK ? 0 : -EIO;
+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;
 }
 
-struct dt_lock_operations osp_md_lock_ops = {
-       .do_object_lock       = osp_md_object_lock,
+/* 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,
 };
-