* GPL HEADER END
*/
/*
- * Copyright (c) 2013, Intel Corporation.
+ * Copyright (c) 2013, 2014, Intel Corporation.
*/
/*
* lustre/osp/osp_md_object.c
*
- * Lustre MDT Proxy Device
+ * OST/MDT proxy device (OSP) Metadata methods
+ *
+ * This file implements methods for remote MD object, which include
+ * dt_object_operations, dt_index_operations and dt_body_operations.
+ *
+ * If there are multiple MDTs in one filesystem, one operation might
+ * include modifications in several MDTs. In such cases, clients
+ * send the RPC to the master MDT, then the operation is decomposed into
+ * object updates which will be dispatched to OSD or OSP. The local updates
+ * go to local OSD and the remote updates go to OSP. In OSP, these remote
+ * object updates will be packed into an update RPC, sent to the remote MDT
+ * and handled by Object Update Target (OUT).
+ *
+ * In DNE phase I, because of missing complete recovery solution, updates
+ * will be executed in order and synchronously.
+ * 1. The transaction is created.
+ * 2. In transaction declare, it collects and packs remote
+ * updates (in osp_md_declare_xxx()).
+ * 3. In transaction start, it sends these remote updates
+ * to remote MDTs, which will execute these updates synchronously.
+ * 4. In transaction execute phase, the local updates will be executed
+ * synchronously.
*
* Author: Di Wang <di.wang@intel.com>
*/
#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;
-
- rc = th->th_current_request->ur_rc;
- osp_destroy_update_req(th->th_current_request);
- 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.
+ * Add OUT_CREATE sub-request into the OUT RPC.
+ *
+ * Note: if the object has already been created, we must add object
+ * destroy sub-request ahead of the create, so it will destroy then
+ * re-create the object.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object to be created
+ * \param[in] attr attribute of the created object
+ * \param[in] hint creation hint
+ * \param[in] dof creation format information
+ * \param[in] th the transaction handle
+ *
+ * \retval only return 0 for 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 == NULL || 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(NULL, 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)
+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)
{
- 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 dt_update_request *update;
+ int rc;
- update = osp_find_create_update_loc(th, dt);
+ update = dt_update_request_find_or_create(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,
return PTR_ERR(update);
}
- 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) {
- 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;
- buf_count++;
- }
-
if (lu_object_exists(&dt->do_lu)) {
/* If the object already exists, we needs to destroy
* this orphan object first.
* but find the object already exists
*/
CDEBUG(D_HA, "%s: object "DFID" exists, destroy this orphan\n",
- dt->do_lu.lo_dev->ld_obd->obd_name, PFID(fid1));
+ dt->do_lu.lo_dev->ld_obd->obd_name,
+ PFID(lu_object_fid(&dt->do_lu)));
- rc = osp_insert_update(env, update, OBJ_REF_DEL, fid1, 0,
- NULL, NULL);
+ rc = out_ref_del_pack(env, &update->dur_buf,
+ lu_object_fid(&dt->do_lu),
+ update->dur_batchid);
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,
- 0, NULL, NULL);
+ rc = out_ref_del_pack(env, &update->dur_buf,
+ lu_object_fid(&dt->do_lu),
+ update->dur_batchid);
if (rc != 0)
GOTO(out, rc);
}
- rc = osp_insert_update(env, update, OBJ_DESTROY, fid1, 0, NULL,
- NULL);
+ rc = out_object_destroy_pack(env, &update->dur_buf,
+ lu_object_fid(&dt->do_lu),
+ update->dur_batchid);
if (rc != 0)
GOTO(out, rc);
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_create_pack(env, &update->dur_buf,
+ lu_object_fid(&dt->do_lu), attr, hint, dof,
+ update->dur_batchid);
+ if (rc != 0)
+ GOTO(out, rc);
out:
if (rc)
CERROR("%s: Insert update error: rc = %d\n",
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)
+/**
+ * Implementation of dt_object_operations::do_declare_create
+ *
+ * For non-remote transaction, it will add an OUT_CREATE sub-request
+ * into the OUT RPC that will be flushed when the transaction start.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt remote object to be created
+ * \param[in] attr attribute of the created object
+ * \param[in] hint creation hint
+ * \param[in] dof creation format information
+ * \param[in] th the transaction handle
+ *
+ * \retval 0 if the insertion succeeds.
+ * \retval negative errno if the insertion 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)
{
- struct osp_object *obj = dt2osp_obj(dt);
+ int rc = 0;
- CDEBUG(D_INFO, "create object "DFID"\n",
- PFID(&dt->do_lu.lo_header->loh_fid));
+ if (!is_only_remote_trans(th)) {
+ rc = __osp_md_declare_object_create(env, dt, attr, hint,
+ dof, th);
- /* Because the create update RPC will be sent during declare phase,
- * 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;
+ CDEBUG(D_INFO, "declare create md_object "DFID": rc = %d\n",
+ PFID(&dt->do_lu.lo_header->loh_fid), rc);
+ }
- return 0;
+ return rc;
}
-static int osp_md_declare_object_ref_del(const struct lu_env *env,
- struct dt_object *dt,
- struct thandle *th)
+/**
+ * Implementation of dt_object_operations::do_create
+ *
+ * For remote transaction, it will add an OUT_CREATE sub-request into
+ * the OUT RPC that will be flushed when the transaction stop.
+ *
+ * It sets necessary flags for created object. In DNE phase I,
+ * remote updates are actually executed during transaction start,
+ * i.e. the object has already been created when calling this method.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object to be created
+ * \param[in] attr attribute of the created object
+ * \param[in] hint creation hint
+ * \param[in] dof creation format information
+ * \param[in] th the transaction handle
+ *
+ * \retval only return 0 for now
+ */
+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 update_request *update;
- struct lu_fid *fid;
- int rc;
+ int rc = 0;
+
+ if (is_only_remote_trans(th)) {
+ rc = __osp_md_declare_object_create(env, dt, attr, hint,
+ dof, th);
+
+ CDEBUG(D_INFO, "create md_object "DFID": rc = %d\n",
+ PFID(&dt->do_lu.lo_header->loh_fid), rc);
+ }
+
+ if (rc == 0) {
+ dt->do_lu.lo_header->loh_attr |= LOHA_EXISTS |
+ (attr->la_mode & S_IFMT);
+ dt2osp_obj(dt)->opo_non_exist = 0;
+ }
+
+ return rc;
+}
- update = osp_find_create_update_loc(th, dt);
+/**
+ * Add OUT_REF_DEL sub-request into the OUT RPC.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object to decrease the reference count.
+ * \param[in] th the transaction handle of refcount decrease.
+ *
+ * \retval 0 if the insertion succeeds.
+ * \retval negative errno if the insertion fails.
+ */
+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;
+
+ update = dt_update_request_find_or_create(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,
return PTR_ERR(update);
}
- fid = (struct lu_fid *)lu_object_fid(&dt->do_lu);
+ rc = out_ref_del_pack(env, &update->dur_buf,
+ lu_object_fid(&dt->do_lu),
+ update->dur_batchid);
+ return rc;
+}
- rc = osp_insert_update(env, update, OBJ_REF_DEL, fid, 0, NULL, NULL);
+/**
+ * Implementation of dt_object_operations::do_declare_ref_del
+ *
+ * For non-remote transaction, it will add an OUT_REF_DEL sub-request
+ * into the OUT RPC that will be flushed when the transaction start.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object to decrease the reference count.
+ * \param[in] th the transaction handle of refcount decrease.
+ *
+ * \retval 0 if the insertion succeeds.
+ * \retval negative errno if the insertion fails.
+ */
+static int osp_md_declare_ref_del(const struct lu_env *env,
+ struct dt_object *dt, struct thandle *th)
+{
+ int rc = 0;
+
+ if (!is_only_remote_trans(th)) {
+ rc = __osp_md_ref_del(env, dt, th);
+
+ CDEBUG(D_INFO, "declare ref del "DFID": rc = %d\n",
+ PFID(&dt->do_lu.lo_header->loh_fid), rc);
+ }
return rc;
}
-static int osp_md_object_ref_del(const struct lu_env *env,
- struct dt_object *dt,
- struct thandle *th)
+/**
+ * Implementation of dt_object_operations::do_ref_del
+ *
+ * For remote transaction, it will add an OUT_REF_DEL sub-request into
+ * the OUT RPC that will be flushed when the transaction stop.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object to decrease the reference count
+ * \param[in] th the transaction handle
+ *
+ * \retval only return 0 for now
+ */
+static int osp_md_ref_del(const struct lu_env *env, struct dt_object *dt,
+ struct thandle *th)
{
- CDEBUG(D_INFO, "ref del object "DFID"\n",
- PFID(&dt->do_lu.lo_header->loh_fid));
+ int rc = 0;
- return 0;
+ if (is_only_remote_trans(th)) {
+ rc = __osp_md_ref_del(env, dt, th);
+
+ CDEBUG(D_INFO, "ref del "DFID": rc = %d\n",
+ PFID(&dt->do_lu.lo_header->loh_fid), rc);
+ }
+
+ return rc;
}
-static int osp_md_declare_ref_add(const struct lu_env *env,
- struct dt_object *dt, struct thandle *th)
+/**
+ * Add OUT_REF_ADD sub-request into the OUT RPC.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object on which to increase the reference count.
+ * \param[in] th the transaction handle.
+ *
+ * \retval 0 if the insertion succeeds.
+ * \retval negative errno if the insertion fails.
+ */
+static int __osp_md_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;
+ int rc;
- update = osp_find_create_update_loc(th, dt);
+ update = dt_update_request_find_or_create(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,
return PTR_ERR(update);
}
- fid = (struct lu_fid *)lu_object_fid(&dt->do_lu);
+ rc = out_ref_add_pack(env, &update->dur_buf,
+ lu_object_fid(&dt->do_lu),
+ update->dur_batchid);
+
+ return rc;
+}
+
+/**
+ * Implementation of dt_object_operations::do_declare_ref_del
+ *
+ * For non-remote transaction, it will add an OUT_REF_ADD sub-request
+ * into the OUT RPC that will be flushed when the transaction start.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object on which to increase the reference count.
+ * \param[in] th the transaction handle.
+ *
+ * \retval 0 if the insertion succeeds.
+ * \retval negative errno if the insertion fails.
+ */
+static int osp_md_declare_ref_add(const struct lu_env *env,
+ struct dt_object *dt, struct thandle *th)
+{
+ int rc = 0;
+
+ if (!is_only_remote_trans(th)) {
+ rc = __osp_md_ref_add(env, dt, th);
- rc = osp_insert_update(env, update, OBJ_REF_ADD, fid, 0, NULL, NULL);
+ CDEBUG(D_INFO, "declare ref add "DFID": rc = %d\n",
+ PFID(&dt->do_lu.lo_header->loh_fid), rc);
+ }
return rc;
}
-static int osp_md_object_ref_add(const struct lu_env *env,
- struct dt_object *dt,
- struct thandle *th)
+/**
+ * Implementation of dt_object_operations::do_ref_add
+ *
+ * For remote transaction, it will add an OUT_REF_ADD sub-request into
+ * the OUT RPC that will be flushed when the transaction stop.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object on which to increase the reference count
+ * \param[in] th the transaction handle
+ *
+ * \retval only return 0 for now
+ */
+static int osp_md_ref_add(const struct lu_env *env, struct dt_object *dt,
+ struct thandle *th)
{
- CDEBUG(D_INFO, "ref add object "DFID"\n",
- PFID(&dt->do_lu.lo_header->loh_fid));
+ int rc = 0;
- return 0;
+ if (is_only_remote_trans(th)) {
+ rc = __osp_md_ref_add(env, dt, th);
+
+ CDEBUG(D_INFO, "ref add "DFID": rc = %d\n",
+ PFID(&dt->do_lu.lo_header->loh_fid), rc);
+ }
+
+ return rc;
}
+/**
+ * Implementation of dt_object_operations::do_ah_init
+ *
+ * Initialize the allocation hint for object creation, which is usually called
+ * before the creation, and these hints (parent and child mode) will be sent to
+ * the remote Object Update Target (OUT) and used in the object create process,
+ * same as OSD object creation.
+ *
+ * \param[in] env execution environment
+ * \param[in] ah the hint to be initialized
+ * \param[in] parent the parent of the object
+ * \param[in] child the object to be created
+ * \param[in] child_mode the mode of the created object
+ */
static void osp_md_ah_init(const struct lu_env *env,
struct dt_allocation_hint *ah,
struct dt_object *parent,
{
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)
+/**
+ * Add OUT_ATTR_SET sub-request into the OUT RPC.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object on which to set attributes
+ * \param[in] attr attributes to be set
+ * \param[in] th the transaction handle
+ *
+ * \retval 0 if the insertion succeeds.
+ * \retval negative errno if the insertion fails.
+ */
+int __osp_md_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 dt_update_request *update;
+ int rc;
+
+ update = dt_update_request_find_or_create(th, dt);
if (IS_ERR(update)) {
CERROR("%s: Get OSP update buf failed: %d\n",
dt->do_lu.lo_dev->ld_obd->obd_name,
return PTR_ERR(update);
}
- 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 = osp_insert_update(env, update, OBJ_ATTR_SET, fid, 1, &size, &buf);
+ rc = out_attr_set_pack(env, &update->dur_buf,
+ lu_object_fid(&dt->do_lu), attr,
+ update->dur_batchid);
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)
+/**
+ * Implementation of dt_object_operations::do_declare_attr_get
+ *
+ * Declare setting attributes to the specified remote object.
+ *
+ * If the transaction is a non-remote transaction, then add the OUT_ATTR_SET
+ * sub-request into the OUT RPC that will be flushed when the transaction start.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object on which to set attributes
+ * \param[in] attr attributes to be set
+ * \param[in] th the transaction handle
+ *
+ * \retval 0 if the insertion succeeds.
+ * \retval negative errno if the insertion fails.
+ */
+int osp_md_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
+ const struct lu_attr *attr, struct thandle *th)
{
- CDEBUG(D_INFO, "attr set object "DFID"\n",
- PFID(&dt->do_lu.lo_header->loh_fid));
-
- RETURN(0);
-}
+ int rc = 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;
+ if (!is_only_remote_trans(th)) {
+ rc = __osp_md_attr_set(env, dt, attr, th);
- LASSERT(buf->lb_len > 0 && buf->lb_buf != NULL);
- 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);
+ CDEBUG(D_INFO, "declare attr set md_object "DFID": rc = %d\n",
+ PFID(&dt->do_lu.lo_header->loh_fid), rc);
}
- 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)
+/**
+ * Implementation of dt_object_operations::do_attr_set
+ *
+ * Set attributes to the specified remote object.
+ *
+ * If the transaction is a remote transaction, then add the OUT_ATTR_SET
+ * sub-request into the OUT RPC that will be flushed when the transaction stop.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object to set attributes
+ * \param[in] attr attributes to be set
+ * \param[in] th the transaction handle
+ *
+ * \retval only return 0 for now
+ */
+int osp_md_attr_set(const struct lu_env *env, struct dt_object *dt,
+ const struct lu_attr *attr, struct thandle *th)
{
- 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 < PAGE_CACHE_SIZE);
- LASSERT(ea_buf != NULL);
+ int rc = 0;
- rc = size;
- if (buf->lb_buf != NULL)
- memcpy(buf->lb_buf, ea_buf, size);
-out:
- if (req != NULL)
- ptlrpc_req_finished(req);
+ if (is_only_remote_trans(th)) {
+ rc = __osp_md_attr_set(env, dt, attr, th);
- osp_destroy_update_req(update);
+ CDEBUG(D_INFO, "attr set md_object "DFID": rc = %d\n",
+ PFID(&dt->do_lu.lo_header->loh_fid), rc);
+ }
- RETURN(rc);
+ return rc;
}
+/**
+ * Implementation of dt_object_operations::do_read_lock
+ *
+ * osp_md_object_{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().
+ */
static void osp_md_object_read_lock(const struct lu_env *env,
struct dt_object *dt, unsigned role)
{
LASSERT(obj->opo_owner == NULL);
}
+/**
+ * Implementation of dt_object_operations::do_write_lock
+ *
+ * Lock the remote object in write mode.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object to be locked
+ * \param[in] role lock role from MDD layer, see mdd_object_role().
+ */
static void osp_md_object_write_lock(const struct lu_env *env,
struct dt_object *dt, unsigned role)
{
obj->opo_owner = env;
}
+/**
+ * Implementation of dt_object_operations::do_read_unlock
+ *
+ * Unlock the read lock of remote object.
+ *
+ * \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)
{
up_read(&obj->opo_sem);
}
+/**
+ * Implementation of dt_object_operations::do_write_unlock
+ *
+ * Unlock the write lock of remote object.
+ *
+ * \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)
{
up_write(&obj->opo_sem);
}
+/**
+ * Implementation of dt_object_operations::do_write_locked
+ *
+ * Test if the object is locked in write mode.
+ *
+ * \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)
{
return obj->opo_owner == env;
}
+/**
+ * Implementation of dt_index_operations::dio_lookup
+ *
+ * Look up record by key under a remote index object. It packs lookup update
+ * into RPC, sends to the remote OUT and waits for the lookup result.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt index object to lookup
+ * \param[out] rec record in which to return lookup result
+ * \param[in] key key of index which will be looked up
+ *
+ * \retval 1 if the lookup succeeds.
+ * \retval negative errno if the lookup fails.
+ */
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_rec *rec, const struct dt_key *key)
{
- 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;
+ 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 = dt_update_request_create(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);
- if (rc) {
+ rc = out_index_lookup_pack(env, &update->dur_buf,
+ 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);
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 = osp_remote_sync(env, osp, update, &req, false);
+ 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);
+ rc = object_update_result_data_get(reply, lbuf, 0);
+ if (rc < 0)
GOTO(out, rc);
- }
- size = update_get_reply_buf(reply, (void **)&fid, 0);
- if (size < 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);
- osp_destroy_update_req(update);
+ dt_update_request_destroy(update);
- RETURN(rc);
+ return rc;
}
-static int osp_md_declare_insert(const struct lu_env *env,
+/**
+ * Add OUT_INDEX_INSERT sub-request into the OUT RPC.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object for which to insert index
+ * \param[in] rec record of the index which will be inserted
+ * \param[in] key key of the index which will be inserted
+ * \param[in] th the transaction handle
+ *
+ * \retval 0 if the insertion succeeds.
+ * \retval negative errno if the insertion fails.
+ */
+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)
{
- struct 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;
+ struct dt_update_request *update;
+ int rc;
- update = osp_find_create_update_loc(th, dt);
+ update = dt_update_request_find_or_create(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,
return PTR_ERR(update);
}
- fid = (struct lu_fid *)lu_object_fid(&dt->do_lu);
+ rc = out_index_insert_pack(env, &update->dur_buf,
+ lu_object_fid(&dt->do_lu), rec, key,
+ update->dur_batchid);
+ return rc;
+}
+
+/**
+ * Implementation of dt_index_operations::dio_declare_insert
+ *
+ * For non-remote transaction, it will add an OUT_INDEX_INSERT sub-request
+ * into the OUT RPC that will be flushed when the transaction start.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object for which to insert index
+ * \param[in] rec record of the index which will be inserted
+ * \param[in] key key of the index which will be inserted
+ * \param[in] th the transaction handle
+ *
+ * \retval 0 if the insertion succeeds.
+ * \retval negative errno if the insertion fails.
+ */
+static int osp_md_declare_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 rc = 0;
- CDEBUG(D_INFO, "%s: insert index of "DFID" %s: "DFID"\n",
- dt->do_lu.lo_dev->ld_obd->obd_name,
- PFID(fid), (char *)key, PFID(rec_fid));
+ if (!is_only_remote_trans(th)) {
+ rc = __osp_md_index_insert(env, dt, rec, key, th);
- fid_cpu_to_le(rec_fid, rec_fid);
+ CDEBUG(D_INFO, "declare index insert "DFID" key %s, rec "DFID
+ ": rc = %d\n", PFID(&dt->do_lu.lo_header->loh_fid),
+ (char *)key,
+ PFID(((struct dt_insert_rec *)rec)->rec_fid), rc);
+ }
- rc = osp_insert_update(env, update, OBJ_INDEX_INSERT, fid,
- ARRAY_SIZE(size), size, bufs);
return rc;
}
+/**
+ * Implementation of dt_index_operations::dio_insert
+ *
+ * For remote transaction, it will add an OUT_INDEX_INSERT sub-request
+ * into the OUT RPC that will be flushed when the transaction stop.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object for which to insert index
+ * \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 only return 0 for now
+ */
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,
- struct lustre_capa *capa,
int ignore_quota)
{
- return 0;
+ int rc = 0;
+
+ if (is_only_remote_trans(th)) {
+ rc = __osp_md_index_insert(env, dt, rec, key, th);
+
+ CDEBUG(D_INFO, "index insert "DFID" key %s, rec "DFID
+ ": rc = %d\n", PFID(&dt->do_lu.lo_header->loh_fid),
+ (char *)key,
+ PFID(((struct dt_insert_rec *)rec)->rec_fid), rc);
+ }
+
+ return rc;
}
-static int osp_md_declare_delete(const struct lu_env *env,
+/**
+ * Add OUT_INDEX_DELETE sub-request into the OUT RPC.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object for which to delete index
+ * \param[in] key key of the index
+ * \param[in] th the transaction handle
+ *
+ * \retval 0 if the insertion succeeds.
+ * \retval negative errno if the insertion fails.
+ */
+static int __osp_md_index_delete(const struct lu_env *env,
struct dt_object *dt,
const struct dt_key *key,
struct thandle *th)
{
- struct update_request *update;
- struct lu_fid *fid;
- int size = strlen((char *)key) + 1;
- char *buf = (char *)key;
- int rc;
+ struct dt_update_request *update;
+ int rc;
- update = osp_find_create_update_loc(th, dt);
+ update = dt_update_request_find_or_create(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,
return PTR_ERR(update);
}
- 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_index_delete_pack(env, &update->dur_buf,
+ lu_object_fid(&dt->do_lu), key,
+ update->dur_batchid);
return rc;
}
-static int osp_md_index_delete(const struct lu_env *env,
- struct dt_object *dt,
- const struct dt_key *key,
- struct thandle *th,
- struct lustre_capa *capa)
+/**
+ * Implementation of dt_index_operations::dio_declare_delete
+ *
+ * For non-remote transaction, it will add an OUT_INDEX_DELETE sub-request
+ * into the OUT RPC that will be flushed when the transaction start.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object for which to delete index
+ * \param[in] key key of the index
+ * \param[in] th the transaction handle
+ *
+ * \retval 0 if the insertion succeeds.
+ * \retval negative errno if the insertion fails.
+ */
+static int osp_md_declare_index_delete(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct dt_key *key,
+ struct thandle *th)
{
- CDEBUG(D_INFO, "index delete "DFID" %s\n",
- PFID(&dt->do_lu.lo_header->loh_fid), (char *)key);
+ int rc = 0;
- return 0;
+ if (!is_only_remote_trans(th)) {
+ rc = __osp_md_index_delete(env, dt, key, th);
+
+ CDEBUG(D_INFO, "declare index delete "DFID" %s: rc = %d\n",
+ PFID(&dt->do_lu.lo_header->loh_fid), (char *)key, rc);
+ }
+
+ return rc;
}
/**
- * 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.
+ * Implementation of dt_index_operations::dio_delete
+ *
+ * For remote transaction, it will add an OUT_INDEX_DELETE sub-request
+ * into the OUT RPC that will be flushed when the transaction stop.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object for which to delete index
+ * \param[in] key key of the index which will be deleted
+ * \param[in] th the transaction handle
+ *
+ * \retval only return 0 for now
*/
-static struct dt_it *osp_it_init(const struct lu_env *env,
- struct dt_object *dt,
- __u32 attr,
- struct lustre_capa *capa)
+static int osp_md_index_delete(const struct lu_env *env,
+ struct dt_object *dt,
+ const struct dt_key *key,
+ struct thandle *th)
{
- lu_object_get(&dt->do_lu);
- return (struct dt_it *)dt;
-}
+ int rc = 0;
-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);
-}
+ if (is_only_remote_trans(th)) {
+ rc = __osp_md_index_delete(env, dt, key, th);
-static int osp_it_get(const struct lu_env *env,
- struct dt_it *di, const struct dt_key *key)
-{
- return 1;
-}
+ CDEBUG(D_INFO, "index delete "DFID" %s: rc = %d\n",
+ PFID(&dt->do_lu.lo_header->loh_fid), (char *)key, rc);
+ }
-static void osp_it_put(const struct lu_env *env, struct dt_it *di)
-{
- return;
+ return rc;
}
-static int osp_it_next(const struct lu_env *env, struct dt_it *di)
+/**
+ * Implementation of dt_index_operations::dio_it.next
+ *
+ * Advance the pointer of the iterator to the next entry. It shares a similar
+ * internal implementation with osp_orphan_it_next(), which is being used for
+ * remote orphan index object. This method will be used for remote directory.
+ *
+ * \param[in] env execution environment
+ * \param[in] di iterator of this iteration
+ *
+ * \retval 0 if the pointer is advanced successfuly.
+ * \retval 1 if it reaches to the end of the index object.
+ * \retval negative errno if the pointer cannot be advanced.
+ */
+static int osp_md_index_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);
+ 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;
- if (o->opo_empty)
- 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;
+ }
+ }
- return 0;
+ rc = osp_it_next_page(env, di);
+ if (rc == 0)
+ goto again;
+
+ RETURN(rc);
}
+/**
+ * Implementation of dt_index_operations::dio_it.key
+ *
+ * Get the key at current iterator poisiton. These iteration methods
+ * (dio_it) will only be used for iterating the remote directory, so
+ * the key is the name of the directory entry.
+ *
+ * \param[in] env execution environment
+ * \param[in] di iterator of this iteration
+ *
+ * \retval name of the current entry
+ */
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;
}
+/**
+ * Implementation of dt_index_operations::dio_it.key_size
+ *
+ * Get the key size at current iterator poisiton. These iteration methods
+ * (dio_it) will only be used for iterating the remote directory, so the key
+ * size is the name size of the directory entry.
+ *
+ * \param[in] env execution environment
+ * \param[in] di iterator of this iteration
+ *
+ * \retval name size of the current entry
+ */
+
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)
+/**
+ * Implementation of dt_index_operations::dio_it.rec
+ *
+ * Get the record at current iterator position. These iteration methods
+ * (dio_it) will only be used for iterating the remote directory, so it
+ * uses lu_dirent_calc_size() to calculate the record size.
+ *
+ * \param[in] env execution environment
+ * \param[in] di iterator of this iteration
+ * \param[out] rec the record to be returned
+ * \param[in] attr attributes of the index object, so it knows
+ * how to pack the entry.
+ *
+ * \retval only return 0 for now
+ */
+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;
+ size_t reclen;
+
+ reclen = lu_dirent_calc_size(le16_to_cpu(ent->lde_namelen), attr);
+ memcpy(rec, ent, reclen);
return 0;
}
+/**
+ * Implementation of dt_index_operations::dio_it.load
+ *
+ * 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_declare_insert = osp_md_declare_index_insert,
.dio_insert = osp_md_index_insert,
- .dio_declare_delete = osp_md_declare_delete,
+ .dio_declare_delete = osp_md_declare_index_delete,
.dio_delete = osp_md_index_delete,
.dio_it = {
.init = osp_it_init,
.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,
}
};
+/**
+ * Implementation of dt_object_operations::do_index_try
+ *
+ * Try to initialize the index API pointer for the given object. This
+ * is the entry point of the index API, i.e. we must call this method
+ * to initialize the index object before calling other index methods.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt index object to be initialized
+ * \param[in] feat the index feature of the object
+ *
+ * \retval 0 if the initialization succeeds.
+ * \retval negative errno if the initialization fails.
+ */
static int osp_md_index_try(const struct lu_env *env,
struct dt_object *dt,
const struct dt_index_features *feat)
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)
-{
- 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);
-
- if (attr->la_flags == 1)
- obj->opo_empty = 0;
- else
- obj->opo_empty = 1;
-out:
- if (req != NULL)
- ptlrpc_req_finished(req);
-
- osp_destroy_update_req(update);
-
- RETURN(rc);
-}
-
-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;
-
- /*
- * track objects to be destroyed via llog
- */
- rc = osp_sync_declare_add(env, o, MDS_UNLINK64_REC, th);
-
- RETURN(rc);
-}
-
-static int osp_md_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;
-
- /*
- * 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);
-
- /* not needed in cache any more */
- set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
-
- RETURN(rc);
-}
-
+/**
+ * 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.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object to be locked
+ * \param[out] lh lock handle
+ * \param[in] einfo enqueue information
+ * \param[in] policy lock policy
+ *
+ * \retval ELDLM_OK if locking the object succeeds.
+ * \retval negative errno if locking fails.
+ */
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;
return rc == ELDLM_OK ? 0 : -EIO;
}
+/**
+ * Implementation of dt_object_operations::do_object_unlock
+ *
+ * Cancel a lock of a remote object.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object to be unlocked
+ * \param[in] einfo lock enqueue information
+ * \param[in] policy lock policy
+ *
+ * \retval Only return 0 for now.
+ */
+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,
.do_declare_create = osp_md_declare_object_create,
.do_create = osp_md_object_create,
.do_declare_ref_add = osp_md_declare_ref_add,
- .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_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_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,
+};
+
+/**
+ * Implementation of dt_body_operations::dbo_declare_write
+ *
+ * Declare an object write. In DNE phase I, it will pack the write
+ * object update into the RPC.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object to be written
+ * \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
+ *
+ * \retval 0 if the insertion succeeds.
+ * \retval negative errno if the insertion fails.
+ */
+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;
+ ssize_t rc;
+
+ update = dt_update_request_find_or_create(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);
+ }
+
+ rc = out_write_pack(env, &update->dur_buf, lu_object_fid(&dt->do_lu),
+ buf, pos, update->dur_batchid);
+
+ return rc;
+
+}
+
+/**
+ * Implementation of dt_body_operations::dbo_write
+ *
+ * Return the buffer size. In DNE phase I, remote updates
+ * are actually executed during transaction start, the buffer has
+ * already been written when this method is being called.
+ *
+ * \param[in] env execution environment
+ * \param[in] dt object to be written
+ * \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.
+ */
+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, int ignore_quota)
+{
+ *pos += buf->lb_len;
+ 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,
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff