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LU-9312 hsm: add a cookie indexed request hash
[fs/lustre-release.git] / lustre / mdt / mdt_coordinator.c
index 1727a0c..5637ffb 100644 (file)
@@ -23,7 +23,7 @@
  * Copyright (c) 2011, 2012 Commissariat a l'energie atomique et aux energies
  *                          alternatives
  *
- * Copyright (c) 2013, 2014, Intel Corporation.
+ * Copyright (c) 2013, 2016, Intel Corporation.
  * Use is subject to license terms.
  */
 /*
@@ -102,8 +102,8 @@ void mdt_hsm_dump_hal(int level, const char *prefix,
        struct hsm_action_item  *hai;
        char                     buf[12];
 
-       CDEBUG(level, "%s: HAL header: version %X count %d compound "LPX64
-                     " archive_id %d flags "LPX64"\n",
+       CDEBUG(level, "%s: HAL header: version %X count %d compound %#llx"
+                     " archive_id %d flags %#llx\n",
               prefix, hal->hal_version, hal->hal_count,
               hal->hal_compound_id, hal->hal_archive_id, hal->hal_flags);
 
@@ -111,8 +111,8 @@ void mdt_hsm_dump_hal(int level, const char *prefix,
        for (i = 0; i < hal->hal_count; i++) {
                sz = hai->hai_len - sizeof(*hai);
                CDEBUG(level, "%s %d: fid="DFID" dfid="DFID
-                      " compound/cookie="LPX64"/"LPX64
-                      " action=%s extent="LPX64"-"LPX64" gid="LPX64
+                      " compound/cookie=%#llx/%#llx"
+                      " action=%s extent=%#llx-%#llx gid=%#llx"
                       " datalen=%d data=[%s]\n",
                       prefix, i,
                       PFID(&hai->hai_fid), PFID(&hai->hai_dfid),
@@ -130,17 +130,19 @@ void mdt_hsm_dump_hal(int level, const char *prefix,
  * data passed to llog_cat_process() callback
  * to scan requests and take actions
  */
+struct hsm_scan_request {
+       int                      hal_sz;
+       int                      hal_used_sz;
+       struct hsm_action_list  *hal;
+};
+
 struct hsm_scan_data {
        struct mdt_thread_info          *mti;
        char                             fs_name[MTI_NAME_MAXLEN+1];
        /* request to be send to agents */
        int                              max_requests;  /** vector size */
        int                              request_cnt;   /** used count */
-       struct {
-               int                      hal_sz;
-               int                      hal_used_sz;
-               struct hsm_action_list  *hal;
-       } *request;
+       struct hsm_scan_request         *request;
 };
 
 /**
@@ -175,55 +177,47 @@ static int mdt_coordinator_cb(const struct lu_env *env,
        dump_llog_agent_req_rec("mdt_coordinator_cb(): ", larr);
        switch (larr->arr_status) {
        case ARS_WAITING: {
-               int i, empty_slot, found;
+               int i;
+               struct hsm_scan_request *request;
 
                /* Are agents full? */
                if (atomic_read(&cdt->cdt_request_count) >=
                    cdt->cdt_max_requests)
                        break;
 
-               /* first search whether the request is found in the list we
-                * have built and if there is room in the request vector */
-               empty_slot = -1;
-               found = -1;
-               for (i = 0; i < hsd->max_requests &&
-                           (empty_slot == -1 || found == -1); i++) {
-                       if (hsd->request[i].hal == NULL) {
-                               empty_slot = i;
-                               continue;
-                       }
+               /* first search whether the request is found in the
+                * list we have built. */
+               request = NULL;
+               for (i = 0; i < hsd->request_cnt; i++) {
                        if (hsd->request[i].hal->hal_compound_id ==
-                               larr->arr_compound_id) {
-                               found = i;
-                               continue;
+                           larr->arr_compound_id) {
+                               request = &hsd->request[i];
+                               break;
                        }
                }
-               if (found == -1 && empty_slot == -1)
-                       /* unknown request and no more room for new request,
-                        * continue scan for to find other entries for
-                        * already found request
-                        */
-                       RETURN(0);
 
-               if (found == -1) {
+               if (!request) {
                        struct hsm_action_list *hal;
 
-                       /* request is not already known */
+                       if (hsd->request_cnt == hsd->max_requests)
+                               /* Unknown request and no more room
+                                * for a new request. Continue to scan
+                                * to find other entries for already
+                                * existing requests.
+                                */
+                               RETURN(0);
+
+                       request = &hsd->request[hsd->request_cnt];
+
                        /* allocates hai vector size just needs to be large
                         * enough */
-                       hsd->request[empty_slot].hal_sz =
-                                    sizeof(*hsd->request[empty_slot].hal) +
-                                    cfs_size_round(MTI_NAME_MAXLEN+1) +
-                                    2 * cfs_size_round(larr->arr_hai.hai_len);
-                       OBD_ALLOC(hal, hsd->request[empty_slot].hal_sz);
-                       if (!hal) {
-                               CERROR("%s: Cannot allocate memory (%d o)"
-                                      "for compound "LPX64"\n",
-                                      mdt_obd_name(mdt),
-                                      hsd->request[i].hal_sz,
-                                      larr->arr_compound_id);
+                       request->hal_sz =
+                               sizeof(*request->hal) +
+                               cfs_size_round(MTI_NAME_MAXLEN+1) +
+                               2 * cfs_size_round(larr->arr_hai.hai_len);
+                       OBD_ALLOC(hal, request->hal_sz);
+                       if (!hal)
                                RETURN(-ENOMEM);
-                       }
                        hal->hal_version = HAL_VERSION;
                        strlcpy(hal->hal_fsname, hsd->fs_name,
                                MTI_NAME_MAXLEN + 1);
@@ -231,10 +225,9 @@ static int mdt_coordinator_cb(const struct lu_env *env,
                        hal->hal_archive_id = larr->arr_archive_id;
                        hal->hal_flags = larr->arr_flags;
                        hal->hal_count = 0;
-                       hsd->request[empty_slot].hal_used_sz = hal_size(hal);
-                       hsd->request[empty_slot].hal = hal;
+                       request->hal_used_sz = hal_size(hal);
+                       request->hal = hal;
                        hsd->request_cnt++;
-                       found = empty_slot;
                        hai = hai_first(hal);
                } else {
                        /* request is known */
@@ -246,44 +239,37 @@ static int mdt_coordinator_cb(const struct lu_env *env,
                         * where the files are not archived in the same backend
                         */
                        if (larr->arr_archive_id !=
-                           hsd->request[found].hal->hal_archive_id)
+                           request->hal->hal_archive_id)
                                RETURN(0);
 
-                       if (hsd->request[found].hal_sz <
-                           hsd->request[found].hal_used_sz +
-                            cfs_size_round(larr->arr_hai.hai_len)) {
+                       if (request->hal_sz <
+                           request->hal_used_sz +
+                           cfs_size_round(larr->arr_hai.hai_len)) {
                                /* Not enough room, need an extension */
                                void *hal_buffer;
                                int sz;
 
-                               sz = 2 * hsd->request[found].hal_sz;
+                               sz = 2 * request->hal_sz;
                                OBD_ALLOC(hal_buffer, sz);
-                               if (!hal_buffer) {
-                                       CERROR("%s: Cannot allocate memory "
-                                              "(%d o) for compound "LPX64"\n",
-                                              mdt_obd_name(mdt), sz,
-                                              larr->arr_compound_id);
+                               if (!hal_buffer)
                                        RETURN(-ENOMEM);
-                               }
-                               memcpy(hal_buffer, hsd->request[found].hal,
-                                      hsd->request[found].hal_used_sz);
-                               OBD_FREE(hsd->request[found].hal,
-                                        hsd->request[found].hal_sz);
-                               hsd->request[found].hal = hal_buffer;
-                               hsd->request[found].hal_sz = sz;
+                               memcpy(hal_buffer, request->hal,
+                                      request->hal_used_sz);
+                               OBD_FREE(request->hal,
+                                        request->hal_sz);
+                               request->hal = hal_buffer;
+                               request->hal_sz = sz;
                        }
-                       hai = hai_first(hsd->request[found].hal);
-                       for (i = 0; i < hsd->request[found].hal->hal_count;
-                            i++)
+                       hai = hai_first(request->hal);
+                       for (i = 0; i < request->hal->hal_count; i++)
                                hai = hai_next(hai);
                }
                memcpy(hai, &larr->arr_hai, larr->arr_hai.hai_len);
                hai->hai_cookie = larr->arr_hai.hai_cookie;
                hai->hai_gid = larr->arr_hai.hai_gid;
 
-               hsd->request[found].hal_used_sz +=
-                                                  cfs_size_round(hai->hai_len);
-               hsd->request[found].hal->hal_count++;
+               request->hal_used_sz += cfs_size_round(hai->hai_len);
+               request->hal->hal_count++;
                break;
        }
        case ARS_STARTED: {
@@ -296,9 +282,9 @@ static int mdt_coordinator_cb(const struct lu_env *env,
                 * error may happen if coordinator crashes or stopped
                 * with running request
                 */
-               car = mdt_cdt_find_request(cdt, larr->arr_hai.hai_cookie, NULL);
+               car = mdt_cdt_find_request(cdt, larr->arr_hai.hai_cookie);
                if (car == NULL) {
-                       last = larr->arr_req_create;
+                       last = larr->arr_req_change;
                } else {
                        last = car->car_req_update;
                        mdt_cdt_put_request(car);
@@ -327,7 +313,7 @@ static int mdt_coordinator_cb(const struct lu_env *env,
                rc = mdt_hsm_update_request_state(hsd->mti, &pgs, 0);
                if (rc)
                        CERROR("%s: cannot cleanup timed out request: "
-                              DFID" for cookie "LPX64" action=%s\n",
+                              DFID" for cookie %#llx action=%s\n",
                               mdt_obd_name(mdt),
                               PFID(&pgs.hpk_fid), pgs.hpk_cookie,
                               hsm_copytool_action2name(
@@ -431,8 +417,8 @@ static int mdt_coordinator(void *data)
        int                      request_sz;
        ENTRY;
 
-       cdt->cdt_thread.t_flags = SVC_RUNNING;
-       wake_up(&cdt->cdt_thread.t_ctl_waitq);
+       cdt->cdt_flags = SVC_RUNNING;
+       wake_up(&cdt->cdt_waitq);
 
        CDEBUG(D_HSM, "%s: coordinator thread starting, pid=%d\n",
               mdt_obd_name(mdt), current_pid());
@@ -456,23 +442,22 @@ static int mdt_coordinator(void *data)
 
                lwi = LWI_TIMEOUT(cfs_time_seconds(cdt->cdt_loop_period),
                                  NULL, NULL);
-               l_wait_event(cdt->cdt_thread.t_ctl_waitq,
-                            (cdt->cdt_thread.t_flags &
-                             (SVC_STOPPING|SVC_EVENT)),
+               l_wait_event(cdt->cdt_waitq,
+                            cdt->cdt_flags & (SVC_STOPPING|SVC_EVENT),
                             &lwi);
 
                CDEBUG(D_HSM, "coordinator resumes\n");
 
-               if (cdt->cdt_thread.t_flags & SVC_STOPPING ||
+               if (cdt->cdt_flags & SVC_STOPPING ||
                    cdt->cdt_state == CDT_STOPPING) {
-                       cdt->cdt_thread.t_flags &= ~SVC_STOPPING;
+                       cdt->cdt_flags &= ~SVC_STOPPING;
                        rc = 0;
                        break;
                }
 
                /* wake up before timeout, new work arrives */
-               if (cdt->cdt_thread.t_flags & SVC_EVENT)
-                       cdt->cdt_thread.t_flags &= ~SVC_EVENT;
+               if (cdt->cdt_flags & SVC_EVENT)
+                       cdt->cdt_flags &= ~SVC_EVENT;
 
                /* if coordinator is suspended continue to wait */
                if (cdt->cdt_state == CDT_DISABLE) {
@@ -512,8 +497,9 @@ static int mdt_coordinator(void *data)
                }
 
                /* here hsd contains a list of requests to be started */
-               for (i = 0; i < hsd.max_requests; i++) {
-                       struct hsm_action_list  *hal = hsd.request[i].hal;
+               for (i = 0; i < hsd.request_cnt; i++) {
+                       struct hsm_scan_request *request = &hsd.request[i];
+                       struct hsm_action_list  *hal = request->hal;
                        struct hsm_action_item  *hai;
                        __u64                   *cookies;
                        int                      sz, j;
@@ -524,10 +510,6 @@ static int mdt_coordinator(void *data)
                            cdt->cdt_max_requests)
                                break;
 
-                       if (hal == NULL)
-                               continue;
-
-                       /* found a request, we start it */
                        rc = mdt_hsm_agent_send(mti, hal, 0);
                        /* if failure, we suppose it is temporary
                         * if the copy tool failed to do the request
@@ -540,13 +522,9 @@ static int mdt_coordinator(void *data)
                         */
                        sz = hal->hal_count * sizeof(__u64);
                        OBD_ALLOC(cookies, sz);
-                       if (cookies == NULL) {
-                               CERROR("%s: Cannot allocate memory (%d o) "
-                                      "for cookies vector "LPX64"\n",
-                                      mdt_obd_name(mdt), sz,
-                                      hal->hal_compound_id);
+                       if (cookies == NULL)
                                continue;
-                       }
+
                        hai = hai_first(hal);
                        for (j = 0; j < hal->hal_count; j++) {
                                cookies[j] = hai->hai_cookie;
@@ -567,19 +545,11 @@ static int mdt_coordinator(void *data)
                }
 clean_cb_alloc:
                /* free hal allocated by callback */
-               for (i = 0; i < hsd.max_requests; i++) {
-                       if (hsd.request[i].hal) {
-                               OBD_FREE(hsd.request[i].hal,
-                                        hsd.request[i].hal_sz);
-                               hsd.request[i].hal_sz = 0;
-                               hsd.request[i].hal = NULL;
-                               hsd.request_cnt--;
-                       }
-               }
-               LASSERT(hsd.request_cnt == 0);
+               for (i = 0; i < hsd.request_cnt; i++) {
+                       struct hsm_scan_request *request = &hsd.request[i];
 
-               /* reset callback data */
-               memset(hsd.request, 0, request_sz);
+                       OBD_FREE(request->hal, request->hal_sz);
+               }
        }
        EXIT;
 out:
@@ -596,8 +566,8 @@ out:
                 * by mdt_stop_coordinator(), we have to ack
                 * and cdt cleaning will be done by event sender
                 */
-               cdt->cdt_thread.t_flags = SVC_STOPPED;
-               wake_up(&cdt->cdt_thread.t_ctl_waitq);
+               cdt->cdt_flags = SVC_STOPPED;
+               wake_up(&cdt->cdt_waitq);
        }
 
        if (rc != 0)
@@ -779,8 +749,8 @@ int mdt_hsm_cdt_wakeup(struct mdt_device *mdt)
                RETURN(-ESRCH);
 
        /* wake up coordinator */
-       cdt->cdt_thread.t_flags = SVC_EVENT;
-       wake_up(&cdt->cdt_thread.t_ctl_waitq);
+       cdt->cdt_flags = SVC_EVENT;
+       wake_up(&cdt->cdt_waitq);
 
        RETURN(0);
 }
@@ -800,29 +770,39 @@ int mdt_hsm_cdt_init(struct mdt_device *mdt)
 
        cdt->cdt_state = CDT_STOPPED;
 
-       init_waitqueue_head(&cdt->cdt_thread.t_ctl_waitq);
+       init_waitqueue_head(&cdt->cdt_waitq);
        mutex_init(&cdt->cdt_llog_lock);
        init_rwsem(&cdt->cdt_agent_lock);
        init_rwsem(&cdt->cdt_request_lock);
        mutex_init(&cdt->cdt_restore_lock);
 
-       INIT_LIST_HEAD(&cdt->cdt_requests);
+       INIT_LIST_HEAD(&cdt->cdt_request_list);
        INIT_LIST_HEAD(&cdt->cdt_agents);
        INIT_LIST_HEAD(&cdt->cdt_restore_hdl);
 
+       cdt->cdt_request_cookie_hash = cfs_hash_create("REQUEST_COOKIE_HASH",
+                                                      CFS_HASH_BITS_MIN,
+                                                      CFS_HASH_BITS_MAX,
+                                                      CFS_HASH_BKT_BITS,
+                                                      0 /* extra bytes */,
+                                                      CFS_HASH_MIN_THETA,
+                                                      CFS_HASH_MAX_THETA,
+                                               &cdt_request_cookie_hash_ops,
+                                                      CFS_HASH_DEFAULT);
+       if (cdt->cdt_request_cookie_hash == NULL)
+               RETURN(-ENOMEM);
+
        rc = lu_env_init(&cdt->cdt_env, LCT_MD_THREAD);
        if (rc < 0)
-               RETURN(rc);
+               GOTO(out_request_cookie_hash, rc);
 
        /* for mdt_ucred(), lu_ucred stored in lu_ucred_key */
        rc = lu_context_init(&cdt->cdt_session, LCT_SERVER_SESSION);
-       if (rc == 0) {
-               lu_context_enter(&cdt->cdt_session);
-               cdt->cdt_env.le_ses = &cdt->cdt_session;
-       } else {
-               lu_env_fini(&cdt->cdt_env);
-               RETURN(rc);
-       }
+       if (rc < 0)
+               GOTO(out_env, rc);
+
+       lu_context_enter(&cdt->cdt_session);
+       cdt->cdt_env.le_ses = &cdt->cdt_session;
 
        cdt_mti = lu_context_key_get(&cdt->cdt_env.le_ctx, &mdt_thread_key);
        LASSERT(cdt_mti != NULL);
@@ -842,6 +822,14 @@ int mdt_hsm_cdt_init(struct mdt_device *mdt)
        cdt->cdt_active_req_timeout = 3600;
 
        RETURN(0);
+
+out_env:
+       lu_env_fini(&cdt->cdt_env);
+out_request_cookie_hash:
+       cfs_hash_putref(cdt->cdt_request_cookie_hash);
+       cdt->cdt_request_cookie_hash = NULL;
+
+       return rc;
 }
 
 /**
@@ -858,6 +846,9 @@ int  mdt_hsm_cdt_fini(struct mdt_device *mdt)
 
        lu_env_fini(&cdt->cdt_env);
 
+       cfs_hash_putref(cdt->cdt_request_cookie_hash);
+       cdt->cdt_request_cookie_hash = NULL;
+
        RETURN(0);
 }
 
@@ -867,7 +858,7 @@ int  mdt_hsm_cdt_fini(struct mdt_device *mdt)
  * \retval 0 success
  * \retval -ve failure
  */
-int mdt_hsm_cdt_start(struct mdt_device *mdt)
+static int mdt_hsm_cdt_start(struct mdt_device *mdt)
 {
        struct coordinator      *cdt = &mdt->mdt_coordinator;
        int                      rc;
@@ -912,6 +903,9 @@ int mdt_hsm_cdt_start(struct mdt_device *mdt)
                       " for registered restore: %d\n",
                       mdt_obd_name(mdt), rc);
 
+       if (mdt->mdt_bottom->dd_rdonly)
+               RETURN(0);
+
        task = kthread_run(mdt_coordinator, cdt_mti, "hsm_cdtr");
        if (IS_ERR(task)) {
                rc = PTR_ERR(task);
@@ -925,8 +919,8 @@ int mdt_hsm_cdt_start(struct mdt_device *mdt)
                rc = 0;
        }
 
-       wait_event(cdt->cdt_thread.t_ctl_waitq,
-                      (cdt->cdt_thread.t_flags & SVC_RUNNING));
+       wait_event(cdt->cdt_waitq,
+                      (cdt->cdt_flags & SVC_RUNNING));
 
        cdt->cdt_state = CDT_RUNNING;
        mdt->mdt_opts.mo_coordinator = 1;
@@ -954,19 +948,22 @@ int mdt_hsm_cdt_stop(struct mdt_device *mdt)
 
        if (cdt->cdt_state != CDT_STOPPING) {
                /* stop coordinator thread before cleaning */
-               cdt->cdt_thread.t_flags = SVC_STOPPING;
-               wake_up(&cdt->cdt_thread.t_ctl_waitq);
-               wait_event(cdt->cdt_thread.t_ctl_waitq,
-                          cdt->cdt_thread.t_flags & SVC_STOPPED);
+               cdt->cdt_flags = SVC_STOPPING;
+               wake_up(&cdt->cdt_waitq);
+               wait_event(cdt->cdt_waitq,
+                          cdt->cdt_flags & SVC_STOPPED);
        }
        cdt->cdt_state = CDT_STOPPED;
 
        /* start cleaning */
        down_write(&cdt->cdt_request_lock);
-       list_for_each_entry_safe(car, tmp1, &cdt->cdt_requests,
+       list_for_each_entry_safe(car, tmp1, &cdt->cdt_request_list,
                                 car_request_list) {
+               cfs_hash_del(cdt->cdt_request_cookie_hash,
+                            &car->car_hai->hai_cookie,
+                            &car->car_cookie_hash);
                list_del(&car->car_request_list);
-               mdt_cdt_free_request(car);
+               mdt_cdt_put_request(car);
        }
        up_write(&cdt->cdt_request_lock);
 
@@ -1033,7 +1030,7 @@ int mdt_hsm_add_hal(struct mdt_thread_info *mti,
                        if (rc) {
                                CERROR("%s: mdt_agent_record_update() failed, "
                                       "rc=%d, cannot update status to %s "
-                                      "for cookie "LPX64"\n",
+                                      "for cookie %#llx\n",
                                       mdt_obd_name(mdt), rc,
                                       agent_req_status2name(ARS_CANCELED),
                                       hai->hai_cookie);
@@ -1041,7 +1038,7 @@ int mdt_hsm_add_hal(struct mdt_thread_info *mti,
                        }
 
                        /* find the running request to set it canceled */
-                       car = mdt_cdt_find_request(cdt, hai->hai_cookie, NULL);
+                       car = mdt_cdt_find_request(cdt, hai->hai_cookie);
                        if (car != NULL) {
                                car->car_canceled = 1;
                                /* uuid has to be changed to the one running the
@@ -1091,39 +1088,37 @@ out:
 /**
  * swap layouts between 2 fids
  * \param mti [IN] context
- * \param fid1 [IN]
- * \param fid2 [IN]
+ * \param obj [IN]
+ * \param dfid [IN]
  * \param mh_common [IN] MD HSM
  */
 static int hsm_swap_layouts(struct mdt_thread_info *mti,
-                           const lustre_fid *fid, const lustre_fid *dfid,
+                           struct mdt_object *obj, const struct lu_fid *dfid,
                            struct md_hsm *mh_common)
 {
-       struct mdt_device       *mdt = mti->mti_mdt;
-       struct mdt_object       *child1, *child2;
-       struct mdt_lock_handle  *lh2;
+       struct mdt_object       *dobj;
+       struct mdt_lock_handle  *dlh;
        int                      rc;
        ENTRY;
 
-       child1 = mdt_object_find(mti->mti_env, mdt, fid);
-       if (IS_ERR(child1))
-               GOTO(out, rc = PTR_ERR(child1));
+       if (!mdt_object_exists(obj))
+               GOTO(out, rc = -ENOENT);
 
-       /* we already have layout lock on FID so take only
+       /* we already have layout lock on obj so take only
         * on dfid */
-       lh2 = &mti->mti_lh[MDT_LH_OLD];
-       mdt_lock_reg_init(lh2, LCK_EX);
-       child2 = mdt_object_find_lock(mti, dfid, lh2, MDS_INODELOCK_LAYOUT);
-       if (IS_ERR(child2))
-               GOTO(out_child1, rc = PTR_ERR(child2));
+       dlh = &mti->mti_lh[MDT_LH_OLD];
+       mdt_lock_reg_init(dlh, LCK_EX);
+       dobj = mdt_object_find_lock(mti, dfid, dlh, MDS_INODELOCK_LAYOUT);
+       if (IS_ERR(dobj))
+               GOTO(out, rc = PTR_ERR(dobj));
 
        /* if copy tool closes the volatile before sending the final
         * progress through llapi_hsm_copy_end(), all the objects
         * are removed and mdd_swap_layout LBUG */
-       if (!mdt_object_exists(child2)) {
+       if (!mdt_object_exists(dobj)) {
                CERROR("%s: Copytool has closed volatile file "DFID"\n",
                       mdt_obd_name(mti->mti_mdt), PFID(dfid));
-               GOTO(out_child2, rc = -ENOENT);
+               GOTO(out_dobj, rc = -ENOENT);
        }
        /* Since we only handle restores here, unconditionally use
         * SWAP_LAYOUTS_MDS_HSM flag to ensure original layout will
@@ -1134,17 +1129,15 @@ static int hsm_swap_layouts(struct mdt_thread_info *mti,
         * only need to clear RELEASED and DIRTY.
         */
        mh_common->mh_flags &= ~(HS_RELEASED | HS_DIRTY);
-       rc = mdt_hsm_attr_set(mti, child2, mh_common);
+       rc = mdt_hsm_attr_set(mti, dobj, mh_common);
        if (rc == 0)
                rc = mo_swap_layouts(mti->mti_env,
-                                    mdt_object_child(child1),
-                                    mdt_object_child(child2),
+                                    mdt_object_child(obj),
+                                    mdt_object_child(dobj),
                                     SWAP_LAYOUTS_MDS_HSM);
 
-out_child2:
-       mdt_object_unlock_put(mti, child2, lh2, 1);
-out_child1:
-       mdt_object_put(mti->mti_env, child1);
+out_dobj:
+       mdt_object_unlock_put(mti, dobj, dlh, 1);
 out:
        RETURN(rc);
 }
@@ -1169,20 +1162,17 @@ static int hsm_cdt_request_completed(struct mdt_thread_info *mti,
        int                      cl_flags = 0, rc = 0;
        struct md_hsm            mh;
        bool                     is_mh_changed;
+       bool                     need_changelog = true;
        ENTRY;
 
        /* default is to retry */
        *status = ARS_WAITING;
 
-       /* find object by FID */
+       /* find object by FID, mdt_hsm_get_md_hsm() returns obj or err
+        * if error/removed continue anyway to get correct reporting done */
        obj = mdt_hsm_get_md_hsm(mti, &car->car_hai->hai_fid, &mh);
        /* we will update MD HSM only if needed */
        is_mh_changed = false;
-       if (IS_ERR(obj)) {
-               /* object removed */
-               *status = ARS_SUCCEED;
-               goto unlock;
-       }
 
        /* no need to change mh->mh_arch_id
         * mdt_hsm_get_md_hsm() got it from disk and it is still valid
@@ -1210,14 +1200,16 @@ static int hsm_cdt_request_completed(struct mdt_thread_info *mti,
                        *status = ARS_SUCCEED;
                        break;
                default:
+                       /* retry only if current policy or requested, and
+                        * object is not on error/removed */
                        *status = (cdt->cdt_policy & CDT_NORETRY_ACTION ||
-                                  !(pgs->hpk_flags & HP_FLAG_RETRY) ?
-                                  ARS_FAILED : ARS_WAITING);
+                                  !(pgs->hpk_flags & HP_FLAG_RETRY) ||
+                                  IS_ERR(obj)) ? ARS_FAILED : ARS_WAITING;
                        break;
                }
 
                if (pgs->hpk_errval > CLF_HSM_MAXERROR) {
-                       CERROR("%s: Request "LPX64" on "DFID
+                       CERROR("%s: Request %#llx on "DFID
                               " failed, error code %d too large\n",
                               mdt_obd_name(mdt),
                               pgs->hpk_cookie, PFID(&pgs->hpk_fid),
@@ -1241,14 +1233,14 @@ static int hsm_cdt_request_completed(struct mdt_thread_info *mti,
                        break;
                case HSMA_CANCEL:
                        hsm_set_cl_event(&cl_flags, HE_CANCEL);
-                       CERROR("%s: Failed request "LPX64" on "DFID
+                       CERROR("%s: Failed request %#llx on "DFID
                               " cannot be a CANCEL\n",
                               mdt_obd_name(mdt),
                               pgs->hpk_cookie,
                               PFID(&pgs->hpk_fid));
                        break;
                default:
-                       CERROR("%s: Failed request "LPX64" on "DFID
+                       CERROR("%s: Failed request %#llx on "DFID
                               " %d is an unknown action\n",
                               mdt_obd_name(mdt),
                               pgs->hpk_cookie, PFID(&pgs->hpk_fid),
@@ -1288,17 +1280,13 @@ static int hsm_cdt_request_completed(struct mdt_thread_info *mti,
                        break;
                case HSMA_CANCEL:
                        hsm_set_cl_event(&cl_flags, HE_CANCEL);
-                       CERROR("%s: Successful request "LPX64
-                              " on "DFID
-                              " cannot be a CANCEL\n",
+                       CERROR("%s: Successful request %#llx on "DFID" cannot be a CANCEL\n",
                               mdt_obd_name(mdt),
                               pgs->hpk_cookie,
                               PFID(&pgs->hpk_fid));
                        break;
                default:
-                       CERROR("%s: Successful request "LPX64
-                              " on "DFID
-                              " %d is an unknown action\n",
+                       CERROR("%s: Successful request %#llx on "DFID" %d is an unknown action\n",
                               mdt_obd_name(mdt),
                               pgs->hpk_cookie, PFID(&pgs->hpk_fid),
                               car->car_hai->hai_action);
@@ -1315,23 +1303,20 @@ static int hsm_cdt_request_completed(struct mdt_thread_info *mti,
                                 mh.mh_flags & HS_DIRTY ? CLF_HSM_DIRTY : 0);
 
        /* unlock is done later, after layout lock management */
-       if (is_mh_changed)
+       if (is_mh_changed && !IS_ERR(obj))
                rc = mdt_hsm_attr_set(mti, obj, &mh);
 
-unlock:
        /* we give back layout lock only if restore was successful or
-        * if restore was canceled or if policy is to not retry
+        * if no retry will be attempted and if object is still alive,
         * in other cases we just unlock the object */
-       if (car->car_hai->hai_action == HSMA_RESTORE &&
-           (pgs->hpk_errval == 0 || pgs->hpk_errval == ECANCELED ||
-            cdt->cdt_policy & CDT_NORETRY_ACTION)) {
+       if (car->car_hai->hai_action == HSMA_RESTORE) {
                struct cdt_restore_handle       *crh;
 
                /* restore in data FID done, we swap the layouts
                 * only if restore is successful */
-               if (pgs->hpk_errval == 0) {
-                       rc = hsm_swap_layouts(mti, &car->car_hai->hai_fid,
-                                             &car->car_hai->hai_dfid, &mh);
+               if (pgs->hpk_errval == 0 && !IS_ERR(obj)) {
+                       rc = hsm_swap_layouts(mti, obj, &car->car_hai->hai_dfid,
+                                             &mh);
                        if (rc) {
                                if (cdt->cdt_policy & CDT_NORETRY_ACTION)
                                        *status = ARS_FAILED;
@@ -1342,17 +1327,25 @@ unlock:
                if (*status == ARS_WAITING)
                        GOTO(out, rc);
 
+               /* restore special case, need to create ChangeLog record
+                * before to give back layout lock to avoid concurrent
+                * file updater to post out of order ChangeLog */
+               mo_changelog(env, CL_HSM, cl_flags, mdt->mdt_child,
+                            &car->car_hai->hai_fid);
+               need_changelog = false;
+
                /* give back layout lock */
                mutex_lock(&cdt->cdt_restore_lock);
                crh = mdt_hsm_restore_hdl_find(cdt, &car->car_hai->hai_fid);
                if (crh != NULL)
                        list_del(&crh->crh_list);
                mutex_unlock(&cdt->cdt_restore_lock);
-               /* just give back layout lock, we keep
-                * the reference which is given back
-                * later with the lock for HSM flags */
-               if (!IS_ERR(obj) && crh != NULL)
-                       mdt_object_unlock(mti, obj, &crh->crh_lh, 1);
+               /* Just give back layout lock, we keep the reference
+                * which is given back later with the lock for HSM
+                * flags.
+                * XXX obj may be invalid so we do not pass it. */
+               if (crh != NULL)
+                       mdt_object_unlock(mti, NULL, &crh->crh_lh, 1);
 
                if (crh != NULL)
                        OBD_SLAB_FREE_PTR(crh, mdt_hsm_cdt_kmem);
@@ -1361,11 +1354,13 @@ unlock:
        GOTO(out, rc);
 
 out:
-       if (obj != NULL && !IS_ERR(obj)) {
-               mo_changelog(env, CL_HSM, cl_flags,
-                            mdt_object_child(obj));
+       /* always add a ChangeLog record */
+       if (need_changelog)
+               mo_changelog(env, CL_HSM, cl_flags, mdt->mdt_child,
+                            &car->car_hai->hai_fid);
+
+       if (!IS_ERR(obj))
                mdt_object_put(mti->mti_env, obj);
-       }
 
        RETURN(rc);
 }
@@ -1395,7 +1390,7 @@ int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
        /* first do sanity checks */
        car = mdt_cdt_update_request(cdt, pgs);
        if (IS_ERR(car)) {
-               CERROR("%s: Cannot find running request for cookie "LPX64
+               CERROR("%s: Cannot find running request for cookie %#llx"
                       " on fid="DFID"\n",
                       mdt_obd_name(mdt),
                       pgs->hpk_cookie, PFID(&pgs->hpk_fid));
@@ -1403,7 +1398,7 @@ int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
                RETURN(PTR_ERR(car));
        }
 
-       CDEBUG(D_HSM, "Progress received for fid="DFID" cookie="LPX64
+       CDEBUG(D_HSM, "Progress received for fid="DFID" cookie=%#llx"
                      " action=%s flags=%d err=%d fid="DFID" dfid="DFID"\n",
                      PFID(&pgs->hpk_fid), pgs->hpk_cookie,
                      hsm_copytool_action2name(car->car_hai->hai_action),
@@ -1422,7 +1417,7 @@ int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
             car->car_hai->hai_action == HSMA_ARCHIVE) &&
            (!lu_fid_eq(&pgs->hpk_fid, &car->car_hai->hai_dfid) &&
             !lu_fid_eq(&pgs->hpk_fid, &car->car_hai->hai_fid))) {
-               CERROR("%s: Progress on "DFID" for cookie "LPX64
+               CERROR("%s: Progress on "DFID" for cookie %#llx"
                       " does not match request FID "DFID" nor data FID "
                       DFID"\n",
                       mdt_obd_name(mdt),
@@ -1433,7 +1428,7 @@ int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
        }
 
        if (pgs->hpk_errval != 0 && !(pgs->hpk_flags & HP_FLAG_COMPLETED)) {
-               CERROR("%s: Progress on "DFID" for cookie "LPX64" action=%s"
+               CERROR("%s: Progress on "DFID" for cookie %#llx action=%s"
                       " is not coherent (err=%d and not completed"
                       " (flags=%d))\n",
                       mdt_obd_name(mdt),
@@ -1453,15 +1448,14 @@ int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
 
                rc = hsm_cdt_request_completed(mti, pgs, car, &status);
 
-               /* remove request from memory list */
-               mdt_cdt_remove_request(cdt, pgs->hpk_cookie);
-
-               CDEBUG(D_HSM, "Updating record: fid="DFID" cookie="LPX64
-                             " action=%s status=%s\n", PFID(&pgs->hpk_fid),
-                      pgs->hpk_cookie,
+               CDEBUG(D_HSM, "%s record: fid="DFID" cookie=%#llx action=%s "
+                             "status=%s\n",
+                      update_record ? "Updating" : "Not updating",
+                      PFID(&pgs->hpk_fid), pgs->hpk_cookie,
                       hsm_copytool_action2name(car->car_hai->hai_action),
                       agent_req_status2name(status));
 
+               /* update record first (LU-9075) */
                if (update_record) {
                        int rc1;
 
@@ -1471,12 +1465,16 @@ int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
                        if (rc1)
                                CERROR("%s: mdt_agent_record_update() failed,"
                                       " rc=%d, cannot update status to %s"
-                                      " for cookie "LPX64"\n",
+                                      " for cookie %#llx\n",
                                       mdt_obd_name(mdt), rc1,
                                       agent_req_status2name(status),
                                       pgs->hpk_cookie);
                        rc = (rc != 0 ? rc : rc1);
                }
+
+               /* then remove request from memory list (LU-9075) */
+               mdt_cdt_remove_request(cdt, pgs->hpk_cookie);
+
                /* ct has completed a request, so a slot is available, wakeup
                 * cdt to find new work */
                mdt_hsm_cdt_wakeup(mdt);
@@ -1542,6 +1540,8 @@ static int mdt_cancel_all_cb(const struct lu_env *env,
  */
 static int hsm_cancel_all_actions(struct mdt_device *mdt)
 {
+       struct lu_env                    env;
+       struct lu_context                session;
        struct mdt_thread_info          *mti;
        struct coordinator              *cdt = &mdt->mdt_coordinator;
        struct cdt_agent_req            *car;
@@ -1552,8 +1552,25 @@ static int hsm_cancel_all_actions(struct mdt_device *mdt)
        enum cdt_states                  save_state;
        ENTRY;
 
-       /* retrieve coordinator context */
-       mti = lu_context_key_get(&cdt->cdt_env.le_ctx, &mdt_thread_key);
+       rc = lu_env_init(&env, LCT_MD_THREAD);
+       if (rc < 0)
+               RETURN(rc);
+
+       /* for mdt_ucred(), lu_ucred stored in lu_ucred_key */
+       rc = lu_context_init(&session, LCT_SERVER_SESSION);
+       if (rc < 0)
+               GOTO(out_env, rc);
+
+       lu_context_enter(&session);
+       env.le_ses = &session;
+
+       mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
+       LASSERT(mti != NULL);
+
+       mti->mti_env = &env;
+       mti->mti_mdt = mdt;
+
+       hsm_init_ucred(mdt_ucred(mti));
 
        /* disable coordinator */
        save_state = cdt->cdt_state;
@@ -1561,7 +1578,7 @@ static int hsm_cancel_all_actions(struct mdt_device *mdt)
 
        /* send cancel to all running requests */
        down_read(&cdt->cdt_request_lock);
-       list_for_each_entry(car, &cdt->cdt_requests, car_request_list) {
+       list_for_each_entry(car, &cdt->cdt_request_list, car_request_list) {
                mdt_cdt_get_request(car);
                /* request is not yet removed from list, it will be done
                 * when copytool will return progress
@@ -1589,7 +1606,7 @@ static int hsm_cancel_all_actions(struct mdt_device *mdt)
                        if (hal == NULL) {
                                mdt_cdt_put_request(car);
                                up_read(&cdt->cdt_request_lock);
-                               GOTO(out, rc = -ENOMEM);
+                               GOTO(out_cdt_state, rc = -ENOMEM);
                        }
                }
 
@@ -1629,9 +1646,13 @@ static int hsm_cancel_all_actions(struct mdt_device *mdt)
 
        rc = cdt_llog_process(mti->mti_env, mti->mti_mdt,
                              mdt_cancel_all_cb, &hcad);
-out:
+out_cdt_state:
        /* enable coordinator */
        cdt->cdt_state = save_state;
+       lu_context_exit(&session);
+       lu_context_fini(&session);
+out_env:
+       lu_env_fini(&env);
 
        RETURN(rc);
 }
@@ -1673,8 +1694,8 @@ bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
                is_compat = true;
                break;
        }
-       CDEBUG(D_HSM, "fid="DFID" action=%s flags="LPX64
-                     " extent="LPX64"-"LPX64" hsm_flags=%.8X %s\n",
+       CDEBUG(D_HSM, "fid="DFID" action=%s flags=%#llx"
+                     " extent=%#llx-%#llx hsm_flags=%.8X %s\n",
                      PFID(&hai->hai_fid),
                      hsm_copytool_action2name(hai->hai_action), rq_flags,
                      hai->hai_extent.offset, hai->hai_extent.length,
@@ -1729,7 +1750,7 @@ static void hsm_policy_bit2str(struct seq_file *m, const __u64 mask,
        ENTRY;
 
        if (hexa)
-               seq_printf(m, "("LPX64") ", mask);
+               seq_printf(m, "(%#llx) ", mask);
 
        for (i = 0; i < CDT_POLICY_SHIFT_COUNT; i++) {
                bit = (1ULL << i);
@@ -1745,7 +1766,7 @@ static void hsm_policy_bit2str(struct seq_file *m, const __u64 mask,
        }
        /* remove last ' ' */
        m->count--;
-       seq_putc(m, '\0');
+       seq_putc(m, '\n');
 }
 
 /* methods to read/write HSM policy flags */
@@ -1822,7 +1843,7 @@ mdt_hsm_policy_seq_write(struct file *file, const char __user *buffer,
 
        } while (start != NULL);
 
-       CDEBUG(D_HSM, "%s: new policy: rm="LPX64" add="LPX64" set="LPX64"\n",
+       CDEBUG(D_HSM, "%s: new policy: rm=%#llx add=%#llx set=%#llx\n",
               mdt_obd_name(mdt), remove_mask, add_mask, set_mask);
 
        /* if no sign in all string, it is a clear and set
@@ -1853,7 +1874,7 @@ static int mdt_hsm_##VAR##_seq_show(struct seq_file *m, void *data)       \
        struct coordinator      *cdt = &mdt->mdt_coordinator;           \
        ENTRY;                                                          \
                                                                        \
-       seq_printf(m, LPU64"\n", (__u64)cdt->VAR);                      \
+       seq_printf(m, "%llu\n", (__u64)cdt->VAR);                       \
        RETURN(0);                                                      \
 }                                                                      \
 static ssize_t                                                         \
@@ -1933,6 +1954,7 @@ mdt_hsm_cdt_control_seq_write(struct file *file, const char __user *buffer,
                        rc = -EALREADY;
                } else {
                        cdt->cdt_state = CDT_STOPPING;
+                       mdt_hsm_cdt_wakeup(mdt);
                }
        } else if (strcmp(kernbuf, CDT_DISABLE_CMD) == 0) {
                if ((cdt->cdt_state == CDT_STOPPING) ||