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LU-13449 tgt: fix recovery timer comparisons
[fs/lustre-release.git] / lustre / ldlm / ldlm_lib.c
index c57fa98..d0c7fd7 100644 (file)
@@ -41,6 +41,7 @@
 
 #include <cl_object.h>
 #include <linux/jiffies.h>
+#include <linux/kernel.h>
 #include <linux/kthread.h>
 #include <libcfs/libcfs.h>
 #include <obd.h>
@@ -89,9 +90,8 @@ static int import_set_conn(struct obd_import *imp, struct obd_uuid *uuid,
        list_for_each_entry(item, &imp->imp_conn_list, oic_item) {
                if (obd_uuid_equals(uuid, &item->oic_uuid)) {
                        if (priority) {
-                               list_del(&item->oic_item);
-                               list_add(&item->oic_item,
-                                        &imp->imp_conn_list);
+                               list_move(&item->oic_item,
+                                         &imp->imp_conn_list);
                                item->oic_last_attempt = 0;
                        }
                        CDEBUG(D_HA, "imp %p@%s: found existing conn %s%s\n",
@@ -271,13 +271,13 @@ static int osc_on_mdt(char *obdname)
  * 3 - inactive-on-startup
  * 4 - restrictive net
  */
-int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
+int client_obd_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 {
-       struct client_obd *cli = &obddev->u.cli;
+       struct client_obd *cli = &obd->u.cli;
        struct obd_import *imp;
        struct obd_uuid server_uuid;
        int rq_portal, rp_portal, connect_op;
-       char *name = obddev->obd_type->typ_name;
+       const char *name = obd->obd_type->typ_name;
        enum ldlm_ns_type ns_type = LDLM_NS_TYPE_UNKNOWN;
        char *cli_name = lustre_cfg_buf(lcfg, 0);
        struct ptlrpc_connection fake_conn = { .c_self = 0,
@@ -378,7 +378,7 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
         * ptlrpc_connect_interpret().
         */
        client_adjust_max_dirty(cli);
-       INIT_LIST_HEAD(&cli->cl_cache_waiters);
+       init_waitqueue_head(&cli->cl_cache_waiters);
        INIT_LIST_HEAD(&cli->cl_loi_ready_list);
        INIT_LIST_HEAD(&cli->cl_loi_hp_ready_list);
        INIT_LIST_HEAD(&cli->cl_loi_write_list);
@@ -413,7 +413,9 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
        init_waitqueue_head(&cli->cl_destroy_waitq);
        atomic_set(&cli->cl_destroy_in_flight, 0);
 
+
        cli->cl_supp_cksum_types = OBD_CKSUM_CRC32;
+       cli->cl_preferred_cksum_type = 0;
 #ifdef ENABLE_CHECKSUM
        /* Turn on checksumming by default. */
        cli->cl_checksum = 1;
@@ -432,7 +434,7 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
         */
        cli->cl_max_pages_per_rpc = PTLRPC_MAX_BRW_PAGES;
 
-       cli->cl_max_short_io_bytes = OBD_MAX_SHORT_IO_BYTES;
+       cli->cl_max_short_io_bytes = OBD_DEF_SHORT_IO_BYTES;
 
        /*
         * set cl_chunkbits default value to PAGE_SHIFT,
@@ -442,14 +444,14 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
 
        if (!strcmp(name, LUSTRE_MDC_NAME)) {
                cli->cl_max_rpcs_in_flight = OBD_MAX_RIF_DEFAULT;
-       } else if (totalram_pages >> (20 - PAGE_SHIFT) <= 128 /* MB */) {
+       } else if (cfs_totalram_pages() >> (20 - PAGE_SHIFT) <= 128 /* MB */) {
                cli->cl_max_rpcs_in_flight = 2;
-       } else if (totalram_pages >> (20 - PAGE_SHIFT) <= 256 /* MB */) {
+       } else if (cfs_totalram_pages() >> (20 - PAGE_SHIFT) <= 256 /* MB */) {
                cli->cl_max_rpcs_in_flight = 3;
-       } else if (totalram_pages >> (20 - PAGE_SHIFT) <= 512 /* MB */) {
+       } else if (cfs_totalram_pages() >> (20 - PAGE_SHIFT) <= 512 /* MB */) {
                cli->cl_max_rpcs_in_flight = 4;
        } else {
-               if (osc_on_mdt(obddev->obd_name))
+               if (osc_on_mdt(obd->obd_name))
                        cli->cl_max_rpcs_in_flight = OBD_MAX_RIF_MAX;
                else
                        cli->cl_max_rpcs_in_flight = OBD_MAX_RIF_DEFAULT;
@@ -480,12 +482,12 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
        }
 
        ptlrpc_init_client(rq_portal, rp_portal, name,
-                          &obddev->obd_ldlm_client);
+                          &obd->obd_ldlm_client);
 
-       imp = class_new_import(obddev);
+       imp = class_new_import(obd);
        if (imp == NULL)
                GOTO(err_ldlm, rc = -ENOENT);
-       imp->imp_client = &obddev->obd_ldlm_client;
+       imp->imp_client = &obd->obd_ldlm_client;
        imp->imp_connect_op = connect_op;
        memcpy(cli->cl_target_uuid.uuid, lustre_cfg_buf(lcfg, 1),
               LUSTRE_CFG_BUFLEN(lcfg, 1));
@@ -497,7 +499,7 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
                if (refnet == LNET_NIDNET(LNET_NID_ANY)) {
                        rc = -EINVAL;
                        CERROR("%s: bad mount option 'network=%s': rc = %d\n",
-                              obddev->obd_name, lustre_cfg_string(lcfg, 4),
+                              obd->obd_name, lustre_cfg_string(lcfg, 4),
                               rc);
                        GOTO(err_import, rc);
                }
@@ -519,7 +521,7 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
        if (LUSTRE_CFG_BUFLEN(lcfg, 3) > 0) {
                if (!strcmp(lustre_cfg_string(lcfg, 3), "inactive")) {
                        CDEBUG(D_HA, "marking %s %s->%s as inactive\n",
-                              name, obddev->obd_name,
+                              name, obd->obd_name,
                               cli->cl_target_uuid.uuid);
                        spin_lock(&imp->imp_lock);
                        imp->imp_deactive = 1;
@@ -527,13 +529,13 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg)
                }
        }
 
-       obddev->obd_namespace = ldlm_namespace_new(obddev, obddev->obd_name,
-                                                  LDLM_NAMESPACE_CLIENT,
-                                                  LDLM_NAMESPACE_GREEDY,
-                                                  ns_type);
-       if (obddev->obd_namespace == NULL) {
+       obd->obd_namespace = ldlm_namespace_new(obd, obd->obd_name,
+                                               LDLM_NAMESPACE_CLIENT,
+                                               LDLM_NAMESPACE_GREEDY,
+                                               ns_type);
+       if (obd->obd_namespace == NULL) {
                CERROR("Unable to create client namespace - %s\n",
-                      obddev->obd_name);
+                      obd->obd_name);
                GOTO(err_import, rc = -ENOMEM);
        }
 
@@ -553,17 +555,17 @@ err:
 }
 EXPORT_SYMBOL(client_obd_setup);
 
-int client_obd_cleanup(struct obd_device *obddev)
+int client_obd_cleanup(struct obd_device *obd)
 {
-       struct client_obd *cli = &obddev->u.cli;
+       struct client_obd *cli = &obd->u.cli;
 
        ENTRY;
 
-       ldlm_namespace_free_post(obddev->obd_namespace);
-       obddev->obd_namespace = NULL;
+       ldlm_namespace_free_post(obd->obd_namespace);
+       obd->obd_namespace = NULL;
 
-       obd_cleanup_client_import(obddev);
-       LASSERT(obddev->u.cli.cl_import == NULL);
+       obd_cleanup_client_import(obd);
+       LASSERT(obd->u.cli.cl_import == NULL);
 
        ldlm_put_ref();
 
@@ -843,7 +845,7 @@ static int target_handle_reconnect(struct lustre_handle *conn,
                              target->obd_name,
                              obd_uuid2str(&exp->exp_client_uuid),
                              obd_export_nid2str(exp),
-                             target->obd_max_recoverable_clients,
+                             atomic_read(&target->obd_max_recoverable_clients),
                              timeout / 60, timeout % 60);
        } else {
                struct target_distribute_txn_data *tdtd;
@@ -1085,6 +1087,8 @@ int target_handle_connect(struct ptlrpc_request *req)
 
        size = req_capsule_get_size(&req->rq_pill, &RMF_CONNECT_DATA,
                                    RCL_CLIENT);
+       if (size < 0 || size > 8 * sizeof(struct obd_connect_data))
+               GOTO(out, rc = -EPROTO);
        data = req_capsule_client_get(&req->rq_pill, &RMF_CONNECT_DATA);
        if (!data)
                GOTO(out, rc = -EPROTO);
@@ -1134,8 +1138,8 @@ int target_handle_connect(struct ptlrpc_request *req)
                                OBD_CONNECT_MDS_MDS) != 0;
 
                /*
-                * OBD_CONNECT_MNE_SWAB is defined as OBD_CONNECT_MDS_MDS
-                * for Imperative Recovery connection from MGC to MGS.
+                * OBD_CONNECT_MNE_SWAB is removed at 2.14
+                * Checking OBD_CONNECT_FID can be removed in the future.
                 *
                 * Via check OBD_CONNECT_FID, we can distinguish whether
                 * the OBD_CONNECT_MDS_MDS/OBD_CONNECT_MNE_SWAB is from
@@ -1172,7 +1176,7 @@ int target_handle_connect(struct ptlrpc_request *req)
        if (obd_uuid_equals(&cluuid, &target->obd_uuid))
                goto dont_check_exports;
 
-       export = cfs_hash_lookup(target->obd_uuid_hash, &cluuid);
+       export = obd_uuid_lookup(target, &cluuid);
        if (!export)
                goto no_export;
 
@@ -1240,6 +1244,10 @@ int target_handle_connect(struct ptlrpc_request *req)
                rc = -EALREADY;
                class_export_put(export);
                export = NULL;
+       } else if (OBD_FAIL_PRECHECK(OBD_FAIL_TGT_RECOVERY_CONNECT) &&
+                  !lw_client) {
+               spin_unlock(&export->exp_lock);
+               rc = -EAGAIN;
        } else {
                export->exp_connecting = 1;
                spin_unlock(&export->exp_lock);
@@ -1257,7 +1265,7 @@ no_export:
                LCONSOLE_WARN("%s: Client %s (at %s) refused connection, still busy with %d references\n",
                              target->obd_name, cluuid.uuid,
                              libcfs_nid2str(req->rq_peer.nid),
-                             atomic_read(&export->exp_refcount));
+                             refcount_read(&export->exp_handle.h_ref));
                        GOTO(out, rc = -EBUSY);
        } else if (lustre_msg_get_conn_cnt(req->rq_reqmsg) == 1 &&
                   rc != EALREADY) {
@@ -1276,7 +1284,7 @@ no_export:
        CDEBUG(D_HA, "%s: connection from %s@%s %st%llu exp %p cur %lld last %lld\n",
               target->obd_name, cluuid.uuid, libcfs_nid2str(req->rq_peer.nid),
               target->obd_recovering ? "recovering/" : "", data->ocd_transno,
-              export, ktime_get_real_seconds(),
+              export, ktime_get_seconds(),
               export ? export->exp_last_request_time : 0);
 
        /*
@@ -1320,7 +1328,8 @@ no_export:
 
                        connected = atomic_read(&target->obd_connected_clients);
                        in_progress = atomic_read(&target->obd_lock_replay_clients);
-                       known = target->obd_max_recoverable_clients;
+                       known =
+                          atomic_read(&target->obd_max_recoverable_clients);
                        stale = target->obd_stale_clients;
                        remaining = hrtimer_expires_remaining(timer);
                        left = ktime_divns(remaining, NSEC_PER_SEC);
@@ -1476,9 +1485,10 @@ dont_check_exports:
                 * condition.
                 */
                if (new_mds_mds_conn)
-                       target->obd_max_recoverable_clients++;
+                       atomic_inc(&target->obd_max_recoverable_clients);
+
                if (atomic_inc_return(&target->obd_connected_clients) ==
-                   target->obd_max_recoverable_clients)
+                   atomic_read(&target->obd_max_recoverable_clients))
                        wake_up(&target->obd_next_transno_waitq);
        }
 
@@ -1631,15 +1641,15 @@ static void target_finish_recovery(struct lu_target *lut)
 
        /* Only log a recovery message when recovery has occurred. */
        if (obd->obd_recovery_start) {
-               time64_t now = ktime_get_real_seconds();
+               time64_t now = ktime_get_seconds();
                time64_t elapsed_time;
 
                elapsed_time = max_t(time64_t, now - obd->obd_recovery_start,
                                     1);
                LCONSOLE_INFO("%s: Recovery over after %lld:%.02lld, of %d clients %d recovered and %d %s evicted.\n",
-                             obd->obd_name, (s64)elapsed_time / 60,
-                             (s64)elapsed_time % 60,
-                             obd->obd_max_recoverable_clients,
+                             obd->obd_name, elapsed_time / 60,
+                             elapsed_time % 60,
+                             atomic_read(&obd->obd_max_recoverable_clients),
                              atomic_read(&obd->obd_connected_clients),
                              obd->obd_stale_clients,
                              obd->obd_stale_clients == 1 ? "was" : "were");
@@ -1662,7 +1672,7 @@ static void target_finish_recovery(struct lu_target *lut)
        }
        spin_unlock(&obd->obd_recovery_task_lock);
 
-       obd->obd_recovery_end = ktime_get_real_seconds();
+       obd->obd_recovery_end = ktime_get_seconds();
 
        /* When recovery finished, cleanup orphans on MDS and OST. */
        if (obd->obd_type && OBP(obd, postrecov)) {
@@ -1678,9 +1688,8 @@ static void target_finish_recovery(struct lu_target *lut)
 static void abort_req_replay_queue(struct obd_device *obd)
 {
        struct ptlrpc_request *req, *n;
-       struct list_head abort_list;
+       LIST_HEAD(abort_list);
 
-       INIT_LIST_HEAD(&abort_list);
        spin_lock(&obd->obd_recovery_task_lock);
        list_splice_init(&obd->obd_req_replay_queue, &abort_list);
        spin_unlock(&obd->obd_recovery_task_lock);
@@ -1699,9 +1708,8 @@ static void abort_req_replay_queue(struct obd_device *obd)
 static void abort_lock_replay_queue(struct obd_device *obd)
 {
        struct ptlrpc_request *req, *n;
-       struct list_head abort_list;
+       LIST_HEAD(abort_list);
 
-       INIT_LIST_HEAD(&abort_list);
        spin_lock(&obd->obd_recovery_task_lock);
        list_splice_init(&obd->obd_lock_replay_queue, &abort_list);
        spin_unlock(&obd->obd_recovery_task_lock);
@@ -1728,9 +1736,8 @@ static void abort_lock_replay_queue(struct obd_device *obd)
 void target_cleanup_recovery(struct obd_device *obd)
 {
        struct ptlrpc_request *req, *n;
-       struct list_head clean_list;
+       LIST_HEAD(clean_list);
 
-       INIT_LIST_HEAD(&clean_list);
        spin_lock(&obd->obd_dev_lock);
        if (!obd->obd_recovering) {
                spin_unlock(&obd->obd_dev_lock);
@@ -1792,68 +1799,82 @@ static void target_start_recovery_timer(struct obd_device *obd)
                return;
        }
 
-       delay = ktime_set(obd->obd_recovery_timeout, 0);
-       hrtimer_start(&obd->obd_recovery_timer, delay, HRTIMER_MODE_REL);
-       obd->obd_recovery_start = ktime_get_real_seconds();
+       obd->obd_recovery_start = ktime_get_seconds();
+       delay = ktime_set(obd->obd_recovery_start +
+                         obd->obd_recovery_timeout, 0);
+       hrtimer_start(&obd->obd_recovery_timer, delay, HRTIMER_MODE_ABS);
        spin_unlock(&obd->obd_dev_lock);
 
-       LCONSOLE_WARN("%s: Will be in recovery for at least %llu:%02llu, or until %d client%s reconnect%s\n",
+       LCONSOLE_WARN("%s: Will be in recovery for at least %u:%02u, or until %d client%s reconnect%s\n",
                      obd->obd_name,
                      obd->obd_recovery_timeout / 60,
                      obd->obd_recovery_timeout % 60,
-                     obd->obd_max_recoverable_clients,
-                     (obd->obd_max_recoverable_clients == 1) ? "" : "s",
-                     (obd->obd_max_recoverable_clients == 1) ? "s" : "");
+                     atomic_read(&obd->obd_max_recoverable_clients),
+                     (atomic_read(&obd->obd_max_recoverable_clients) == 1) ?
+                     "" : "s",
+                     (atomic_read(&obd->obd_max_recoverable_clients) == 1) ?
+                     "s" : "");
 }
 
 /**
  * extend recovery window.
  *
- * if @extend is true, extend recovery window to have @drt remaining at least;
- * otherwise, make sure the recovery timeout value is not less than @drt.
+ * if @extend is true, extend recovery window to have @dr_timeout remaining
+ * at least; otherwise, make sure the recovery timeout value is not less
+ * than @dr_timeout.
  */
-static void extend_recovery_timer(struct obd_device *obd, time_t drt,
+static void extend_recovery_timer(struct obd_device *obd, timeout_t dr_timeout,
                                  bool extend)
 {
        ktime_t left_ns;
-       time_t left;
-       time_t to;
+       timeout_t timeout;
+       timeout_t left;
 
        spin_lock(&obd->obd_dev_lock);
-       if (!obd->obd_recovering || obd->obd_abort_recovery) {
+       if (!obd->obd_recovering || obd->obd_abort_recovery ||
+           obd->obd_stopping) {
                spin_unlock(&obd->obd_dev_lock);
                return;
        }
        LASSERT(obd->obd_recovery_start != 0);
 
-       to = obd->obd_recovery_timeout;
        left_ns = hrtimer_expires_remaining(&obd->obd_recovery_timer);
        left = ktime_divns(left_ns, NSEC_PER_SEC);
 
-       if (extend && (drt > left))
-               to += drt - left;
-       else if (!extend && (drt > to))
-               to = drt;
-
-       if (to > obd->obd_recovery_time_hard) {
-               to = obd->obd_recovery_time_hard;
-               CWARN("%s: extended recovery timer reaching hard limit: %ld, extend: %d\n",
-                     obd->obd_name, to, extend);
+       if (extend) {
+               timeout = obd->obd_recovery_timeout;
+               /* dr_timeout will happen after the hrtimer has expired.
+                * Add the excess time to the soft recovery timeout without
+                * exceeding the hard recovery timeout.
+                */
+               if (dr_timeout > left) {
+                       timeout += dr_timeout - left;
+                       timeout = min_t(timeout_t, obd->obd_recovery_time_hard,
+                                       timeout);
+               }
+       } else {
+               timeout = clamp_t(timeout_t, dr_timeout,
+                                 obd->obd_recovery_timeout,
+                                 obd->obd_recovery_time_hard);
        }
 
-       if (obd->obd_recovery_timeout < to) {
-               ktime_t now = ktime_get_real();
-               ktime_t end;
+       if (timeout == obd->obd_recovery_time_hard)
+               CWARN("%s: extended recovery timer reached hard limit: %d, extend: %d\n",
+                     obd->obd_name, timeout, extend);
+
+       if (obd->obd_recovery_timeout < timeout) {
+               ktime_t end, now;
 
-               obd->obd_recovery_timeout = to;
-               end = ktime_set(obd->obd_recovery_start + to, 0);
+               obd->obd_recovery_timeout = timeout;
+               end = ktime_set(obd->obd_recovery_start + timeout, 0);
+               now = ktime_set(ktime_get_seconds(), 0);
                left_ns = ktime_sub(end, now);
-               hrtimer_forward_now(&obd->obd_recovery_timer, left_ns);
-               left = ktime_divns(left_ns, NSEC_PER_MSEC);
+               hrtimer_start(&obd->obd_recovery_timer, end, HRTIMER_MODE_ABS);
+               left = ktime_divns(left_ns, NSEC_PER_SEC);
        }
        spin_unlock(&obd->obd_dev_lock);
 
-       CDEBUG(D_HA, "%s: recovery timer will expire in %ld seconds\n",
+       CDEBUG(D_HA, "%s: recovery timer will expire in %d seconds\n",
                obd->obd_name, left);
 }
 
@@ -1872,40 +1893,40 @@ check_and_start_recovery_timer(struct obd_device *obd,
                               struct ptlrpc_request *req,
                               int new_client)
 {
-       time_t service_time = lustre_msg_get_service_time(req->rq_reqmsg);
+       timeout_t service_timeout = lustre_msg_get_service_timeout(req->rq_reqmsg);
        struct obd_device_target *obt = &obd->u.obt;
 
-       if (!new_client && service_time)
+       if (!new_client && service_timeout)
                /*
                 * Teach server about old server's estimates, as first guess
                 * at how long new requests will take.
                 */
                at_measured(&req->rq_rqbd->rqbd_svcpt->scp_at_estimate,
-                           service_time);
+                           service_timeout);
 
        target_start_recovery_timer(obd);
 
        /*
         * Convert the service time to RPC timeout,
-        * and reuse service_time to limit stack usage.
+        * and reuse service_timeout to limit stack usage.
         */
-       service_time = at_est2timeout(service_time);
+       service_timeout = at_est2timeout(service_timeout);
 
        if (OBD_FAIL_CHECK(OBD_FAIL_TGT_SLUGGISH_NET) &&
-           service_time < at_extra)
-               service_time = at_extra;
+           service_timeout < at_extra)
+               service_timeout = at_extra;
 
        /*
-        * We expect other clients to timeout within service_time, then try
+        * We expect other clients to timeout within service_timeout, then try
         * to reconnect, then try the failover server.  The max delay between
         * connect attempts is SWITCH_MAX + SWITCH_INC + INITIAL.
         */
-       service_time += 2 * INITIAL_CONNECT_TIMEOUT;
+       service_timeout += 2 * INITIAL_CONNECT_TIMEOUT;
 
        LASSERT(obt->obt_magic == OBT_MAGIC);
-       service_time += 2 * (CONNECTION_SWITCH_MAX + CONNECTION_SWITCH_INC);
-       if (service_time > obd->obd_recovery_timeout && !new_client)
-               extend_recovery_timer(obd, service_time, false);
+       service_timeout += 2 * (CONNECTION_SWITCH_MAX + CONNECTION_SWITCH_INC);
+       if (service_timeout > obd->obd_recovery_timeout && !new_client)
+               extend_recovery_timer(obd, service_timeout, false);
 }
 
 /** Health checking routines */
@@ -1980,7 +2001,8 @@ static int check_for_next_transno(struct lu_target *lut)
 
        CDEBUG(D_HA,
               "max: %d, connected: %d, completed: %d, queue_len: %d, req_transno: %llu, next_transno: %llu\n",
-              obd->obd_max_recoverable_clients, connected, completed,
+              atomic_read(&obd->obd_max_recoverable_clients),
+              connected, completed,
               queue_len, req_transno, next_transno);
 
        if (obd->obd_abort_recovery) {
@@ -2074,7 +2096,7 @@ repeat:
                        last = now;
                }
        }
-       if (obd->obd_recovery_start != 0 && ktime_get_real_seconds() >=
+       if (obd->obd_recovery_start != 0 && ktime_get_seconds() >=
              (obd->obd_recovery_start + obd->obd_recovery_time_hard)) {
                __u64 next_update_transno = 0;
 
@@ -2094,13 +2116,13 @@ repeat:
                         * yet, let's wait those threads stopped
                         */
                        if (next_update_transno == 0) {
-                               struct l_wait_info lwi = { 0 };
-
-                               l_wait_event(tdtd->tdtd_recovery_threads_waitq,
-                                      atomic_read(
-                                      &tdtd->tdtd_recovery_threads_count) == 0,
-                                      &lwi);
+                               spin_unlock(&obd->obd_recovery_task_lock);
+                               wait_event_idle(
+                                       tdtd->tdtd_recovery_threads_waitq,
+                                       atomic_read(&tdtd->tdtd_recovery_threads_count)
+                                       == 0);
 
+                               spin_lock(&obd->obd_recovery_task_lock);
                                next_update_transno =
                                        distribute_txn_get_next_transno(
                                                                lut->lut_tdtd);
@@ -2134,22 +2156,21 @@ repeat:
 
        while (wait_event_timeout(obd->obd_next_transno_waitq,
                                  check_routine(lut),
-                                 msecs_to_jiffies(60 * MSEC_PER_SEC)) == 0)
+                                 cfs_time_seconds(60)) == 0)
                ; /* wait indefinitely for event, but don't trigger watchdog */
 
        if (obd->obd_abort_recovery) {
                CWARN("recovery is aborted, evict exports in recovery\n");
                if (lut->lut_tdtd != NULL) {
-                       struct l_wait_info lwi = { 0 };
-
                        tdtd = lut->lut_tdtd;
                        /*
                         * Let's wait all of the update log recovery thread
                         * finished
                         */
-                       l_wait_event(tdtd->tdtd_recovery_threads_waitq,
-                        atomic_read(&tdtd->tdtd_recovery_threads_count) == 0,
-                            &lwi);
+                       wait_event_idle(
+                               tdtd->tdtd_recovery_threads_waitq,
+                               atomic_read(&tdtd->tdtd_recovery_threads_count)
+                               == 0);
                        /* Then abort the update recovery list */
                        dtrq_list_destroy(lut->lut_tdtd);
                }
@@ -2157,8 +2178,10 @@ repeat:
                /** evict exports which didn't finish recovery yet */
                class_disconnect_stale_exports(obd, exp_finished);
                return 1;
-       } else if (obd->obd_recovery_expired) {
+       } else if (obd->obd_recovery_expired &&
+                  obd->obd_recovery_timeout < obd->obd_recovery_time_hard) {
                obd->obd_recovery_expired = 0;
+
                /** If some clients died being recovered, evict them */
                LCONSOLE_WARN("%s: recovery is timed out, evict stale exports\n",
                              obd->obd_name);
@@ -2251,16 +2274,19 @@ static void handle_recovery_req(struct ptlrpc_thread *thread,
        (void)handler(req);
        lu_context_exit(&thread->t_env->le_ctx);
 
+       req->rq_svc_thread->t_env->le_ses = NULL;
+
        /* don't reset timer for final stage */
        if (!exp_finished(req->rq_export)) {
-               time_t to = obd_timeout;
+               timeout_t timeout = obd_timeout;
 
                /**
-                * Add request timeout to the recovery time so next request from
+                * Add request @timeout to the recovery time so next request from
                 * this client may come in recovery time
                 */
                if (!AT_OFF) {
                        struct ptlrpc_service_part *svcpt;
+                       timeout_t est_timeout;
 
                        svcpt = req->rq_rqbd->rqbd_svcpt;
                        /*
@@ -2270,18 +2296,19 @@ static void handle_recovery_req(struct ptlrpc_thread *thread,
                         * use the maxium timeout here for waiting the client
                         * sending the next req
                         */
-                       to = max_t(time_t,
-                                  at_est2timeout(at_get(&svcpt->scp_at_estimate)),
-                                  lustre_msg_get_timeout(req->rq_reqmsg));
+                       est_timeout = at_get(&svcpt->scp_at_estimate);
+                       timeout = max_t(timeout_t, at_est2timeout(est_timeout),
+                                       lustre_msg_get_timeout(req->rq_reqmsg));
                        /*
                         * Add 2 net_latency, one for balance rq_deadline
                         * (see ptl_send_rpc), one for resend the req to server,
                         * Note: client will pack net_latency in replay req
                         * (see ptlrpc_replay_req)
                         */
-                       to += 2 * lustre_msg_get_service_time(req->rq_reqmsg);
+                       timeout += 2 * lustre_msg_get_service_timeout(req->rq_reqmsg);
                }
-               extend_recovery_timer(class_exp2obd(req->rq_export), to, true);
+               extend_recovery_timer(class_exp2obd(req->rq_export), timeout,
+                                     true);
        }
        EXIT;
 }
@@ -2294,19 +2321,21 @@ static int check_for_recovery_ready(struct lu_target *lut)
 
        CDEBUG(D_HA,
               "connected %d stale %d max_recoverable_clients %d abort %d expired %d\n",
-              clnts, obd->obd_stale_clients, obd->obd_max_recoverable_clients,
+              clnts, obd->obd_stale_clients,
+              atomic_read(&obd->obd_max_recoverable_clients),
               obd->obd_abort_recovery, obd->obd_recovery_expired);
 
        if (!obd->obd_abort_recovery && !obd->obd_recovery_expired) {
-               LASSERT(clnts <= obd->obd_max_recoverable_clients);
+               LASSERT(clnts <=
+                       atomic_read(&obd->obd_max_recoverable_clients));
                if (clnts + obd->obd_stale_clients <
-                   obd->obd_max_recoverable_clients)
+                   atomic_read(&obd->obd_max_recoverable_clients))
                        return 0;
        }
 
        if (lut->lut_tdtd != NULL) {
                if (!lut->lut_tdtd->tdtd_replay_ready &&
-                   !obd->obd_abort_recovery) {
+                   !obd->obd_abort_recovery && !obd->obd_stopping) {
                        /*
                         * Let's extend recovery timer, in case the recovery
                         * timer expired, and some clients got evicted
@@ -2314,7 +2343,7 @@ static int check_for_recovery_ready(struct lu_target *lut)
                        extend_recovery_timer(obd, obd->obd_recovery_timeout,
                                              true);
                        CDEBUG(D_HA,
-                              "%s update recovery is not ready, extend recovery %llu\n",
+                              "%s update recovery is not ready, extend recovery %d\n",
                               obd->obd_name, obd->obd_recovery_timeout);
                        return 0;
                }
@@ -2386,7 +2415,7 @@ static void drop_duplicate_replay_req(struct lu_env *env,
                                      struct ptlrpc_request *req)
 {
        DEBUG_REQ(D_HA, req,
-                 "remove t%lld from %s because of duplicate update records are found.\n",
+                 "remove t%lld from %s because duplicate update records found",
                  lustre_msg_get_transno(req->rq_reqmsg),
                  libcfs_nid2str(req->rq_peer.nid));
 
@@ -2402,7 +2431,7 @@ static void drop_duplicate_replay_req(struct lu_env *env,
                lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
                target_send_reply(req, req->rq_status, 0);
        } else {
-               DEBUG_REQ(D_ERROR, req, "wrong opc from %s\n",
+               DEBUG_REQ(D_ERROR, req, "wrong opc from %s",
                libcfs_nid2str(req->rq_peer.nid));
        }
        target_exp_dequeue_req_replay(req);
@@ -2481,7 +2510,7 @@ static void replay_request_or_update(struct lu_env *env,
                                continue;
                        }
 
-                       LASSERT(trd->trd_processing_task == current_pid());
+                       LASSERT(trd->trd_processing_task == current->pid);
                        DEBUG_REQ(D_HA, req, "processing x%llu t%lld from %s",
                                  req->rq_xid,
                                  lustre_msg_get_transno(req->rq_reqmsg),
@@ -2582,8 +2611,8 @@ static int target_recovery_thread(void *arg)
        tgt_io_thread_init(thread); /* init thread_big_cache for IO requests */
 
        CDEBUG(D_HA, "%s: started recovery thread pid %d\n", obd->obd_name,
-              current_pid());
-       trd->trd_processing_task = current_pid();
+              current->pid);
+       trd->trd_processing_task = current->pid;
 
        spin_lock(&obd->obd_dev_lock);
        obd->obd_recovering = 1;
@@ -2612,8 +2641,8 @@ static int target_recovery_thread(void *arg)
        CDEBUG(D_INFO, "2: lock replay stage - %d clients\n",
               atomic_read(&obd->obd_lock_replay_clients));
        while ((req = target_next_replay_lock(lut))) {
-               LASSERT(trd->trd_processing_task == current_pid());
-               DEBUG_REQ(D_HA, req, "processing lock from %s: ",
+               LASSERT(trd->trd_processing_task == current->pid);
+               DEBUG_REQ(D_HA, req, "processing lock from %s:",
                          libcfs_nid2str(req->rq_peer.nid));
                handle_recovery_req(thread, req,
                                    trd->trd_recovery_handler);
@@ -2640,8 +2669,8 @@ static int target_recovery_thread(void *arg)
        target_cancel_recovery_timer(obd);
        spin_unlock(&obd->obd_recovery_task_lock);
        while ((req = target_next_final_ping(obd))) {
-               LASSERT(trd->trd_processing_task == current_pid());
-               DEBUG_REQ(D_HA, req, "processing final ping from %s: ",
+               LASSERT(trd->trd_processing_task == current->pid);
+               DEBUG_REQ(D_HA, req, "processing final ping from %s:",
                          libcfs_nid2str(req->rq_peer.nid));
                handle_recovery_req(thread, req,
                                    trd->trd_recovery_handler);
@@ -2737,7 +2766,7 @@ static enum hrtimer_restart target_recovery_expired(struct hrtimer *timer)
        CDEBUG(D_HA,
               "%s: recovery timed out; %d clients are still in recovery after %llu seconds (%d clients connected)\n",
               obd->obd_name, atomic_read(&obd->obd_lock_replay_clients),
-              ktime_get_real_seconds() - obd->obd_recovery_start,
+              ktime_get_seconds() - obd->obd_recovery_start,
               atomic_read(&obd->obd_connected_clients));
 
        obd->obd_recovery_expired = 1;
@@ -2752,7 +2781,7 @@ void target_recovery_init(struct lu_target *lut, svc_handler_t handler)
        if (lut->lut_bottom->dd_rdonly)
                return;
 
-       if (obd->obd_max_recoverable_clients == 0) {
+       if (atomic_read(&obd->obd_max_recoverable_clients) == 0) {
                /** Update server last boot epoch */
                tgt_boot_epoch_update(lut);
                return;
@@ -2760,14 +2789,15 @@ void target_recovery_init(struct lu_target *lut, svc_handler_t handler)
 
        CDEBUG(D_HA, "RECOVERY: service %s, %d recoverable clients, "
               "last_transno %llu\n", obd->obd_name,
-              obd->obd_max_recoverable_clients, obd->obd_last_committed);
+              atomic_read(&obd->obd_max_recoverable_clients),
+              obd->obd_last_committed);
        LASSERT(obd->obd_stopping == 0);
        obd->obd_next_recovery_transno = obd->obd_last_committed + 1;
        obd->obd_recovery_start = 0;
        obd->obd_recovery_end = 0;
 
-       hrtimer_init(&obd->obd_recovery_timer, CLOCK_REALTIME,
-                    HRTIMER_MODE_REL);
+       hrtimer_init(&obd->obd_recovery_timer, CLOCK_MONOTONIC,
+                    HRTIMER_MODE_ABS);
        obd->obd_recovery_timer.function = &target_recovery_expired;
        target_start_recovery_thread(lut, handler);
 }
@@ -2820,7 +2850,7 @@ int target_queue_recovery_request(struct ptlrpc_request *req,
 
        ENTRY;
 
-       if (obd->obd_recovery_data.trd_processing_task == current_pid()) {
+       if (obd->obd_recovery_data.trd_processing_task == current->pid) {
                /* Processing the queue right now, don't re-add. */
                RETURN(1);
        }
@@ -2834,8 +2864,8 @@ int target_queue_recovery_request(struct ptlrpc_request *req,
                                cfs_fail_val = 0;
                                wake_up(&cfs_race_waitq);
 
-                               set_current_state(TASK_INTERRUPTIBLE);
-                               schedule_timeout(cfs_time_seconds(1));
+                               schedule_timeout_interruptible(
+                                       cfs_time_seconds(1));
                        }
                }
 
@@ -2881,7 +2911,7 @@ int target_queue_recovery_request(struct ptlrpc_request *req,
 
                        if (duplicate != NULL) {
                                DEBUG_REQ(D_HA, duplicate,
-                                         "put prev final req\n");
+                                         "put prev final req");
                                target_request_copy_put(duplicate);
                        }
                        RETURN(0);
@@ -3276,16 +3306,6 @@ void ldlm_dump_export_locks(struct obd_export *exp)
 #endif
 
 #ifdef HAVE_SERVER_SUPPORT
-static int target_bulk_timeout(void *data)
-{
-       ENTRY;
-       /*
-        * We don't fail the connection here, because having the export
-        * killed makes the (vital) call to commitrw very sad.
-        */
-       RETURN(1);
-}
-
 static inline const char *bulk2type(struct ptlrpc_request *req)
 {
        if (req->rq_bulk_read)
@@ -3295,23 +3315,19 @@ static inline const char *bulk2type(struct ptlrpc_request *req)
        return "UNKNOWN";
 }
 
-int target_bulk_io(struct obd_export *exp, struct ptlrpc_bulk_desc *desc,
-                  struct l_wait_info *lwi)
+int target_bulk_io(struct obd_export *exp, struct ptlrpc_bulk_desc *desc)
 {
        struct ptlrpc_request *req = desc->bd_req;
-       time64_t start = ktime_get_real_seconds();
+       time64_t start = ktime_get_seconds();
        time64_t deadline;
        int rc = 0;
 
        ENTRY;
 
        /* If there is eviction in progress, wait for it to finish. */
-       if (unlikely(atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
-               *lwi = LWI_INTR(NULL, NULL);
-               rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq,
-                                 !atomic_read(&exp->exp_obd->obd_evict_inprogress),
-                                 lwi);
-       }
+       wait_event_idle(
+               exp->exp_obd->obd_evict_inprogress_waitq,
+               !atomic_read(&exp->exp_obd->obd_evict_inprogress));
 
        /* Check if client was evicted or reconnected already. */
        if (exp->exp_failed ||
@@ -3331,7 +3347,7 @@ int target_bulk_io(struct obd_export *exp, struct ptlrpc_bulk_desc *desc,
        }
 
        if (rc < 0) {
-               DEBUG_REQ(D_ERROR, req, "bulk %s failed: rc %d",
+               DEBUG_REQ(D_ERROR, req, "bulk %s failed: rc %d",
                          bulk2type(req), rc);
                RETURN(rc);
        }
@@ -3347,28 +3363,27 @@ int target_bulk_io(struct obd_export *exp, struct ptlrpc_bulk_desc *desc,
                deadline = req->rq_deadline;
 
        do {
-               time64_t timeoutl = deadline - ktime_get_real_seconds();
-               long timeout_jiffies = timeoutl <= 0 ?
-                                      1 : cfs_time_seconds(timeoutl);
+               time64_t timeoutl = deadline - ktime_get_seconds();
                time64_t rq_deadline;
 
-               *lwi = LWI_TIMEOUT_INTERVAL(timeout_jiffies,
-                                           cfs_time_seconds(1),
-                                           target_bulk_timeout, desc);
-               rc = l_wait_event(desc->bd_waitq,
-                                 !ptlrpc_server_bulk_active(desc) ||
-                                 exp->exp_failed ||
-                                 exp->exp_conn_cnt >
-                                 lustre_msg_get_conn_cnt(req->rq_reqmsg),
-                                 lwi);
-               LASSERT(rc == 0 || rc == -ETIMEDOUT);
+               while (timeoutl >= 0 &&
+                      wait_event_idle_timeout(
+                              desc->bd_waitq,
+                              !ptlrpc_server_bulk_active(desc) ||
+                              exp->exp_failed ||
+                              exp->exp_conn_cnt >
+                              lustre_msg_get_conn_cnt(req->rq_reqmsg),
+                              timeoutl ? cfs_time_seconds(1) : 1) == 0)
+                       timeoutl -= 1;
+               rc = timeoutl < 0 ? -ETIMEDOUT : 0;
+
                /* Wait again if we changed rq_deadline. */
                rq_deadline = READ_ONCE(req->rq_deadline);
                deadline = start + bulk_timeout;
                if (deadline > rq_deadline)
                        deadline = rq_deadline;
        } while (rc == -ETIMEDOUT &&
-                deadline > ktime_get_real_seconds());
+                deadline > ktime_get_seconds());
 
        if (rc == -ETIMEDOUT) {
                DEBUG_REQ(D_ERROR, req, "timeout on bulk %s after %lld%+llds",