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LU-15009 ofd: continue precreate if LAST_ID is less on MDT
[fs/lustre-release.git] / lustre / ofd / ofd_dev.c
index c654a30..cb7a1b5 100644 (file)
  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2012, 2016, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
  *
  * lustre/ofd/ofd_dev.c
  *
 
 #include <obd_class.h>
 #include <obd_cksum.h>
-#include <lustre_param.h>
+#include <uapi/linux/lustre/lustre_param.h>
 #include <lustre_fid.h>
 #include <lustre_lfsck.h>
-#include <lustre/lustre_idl.h>
 #include <lustre_dlm.h>
 #include <lustre_quota.h>
 #include <lustre_nodemap.h>
 #include <lustre_log.h>
+#include <linux/falloc.h>
 
 #include "ofd_internal.h"
 
 /* Slab for OFD object allocation */
 static struct kmem_cache *ofd_object_kmem;
-
 static struct lu_kmem_descr ofd_caches[] = {
        {
                .ckd_cache = &ofd_object_kmem,
@@ -163,7 +161,8 @@ out:
  * \retval             negative value on error
  */
 static int ofd_stack_init(const struct lu_env *env,
-                         struct ofd_device *m, struct lustre_cfg *cfg)
+                         struct ofd_device *m, struct lustre_cfg *cfg,
+                         u32 *lmd_flags)
 {
        const char              *dev = lustre_cfg_string(cfg, 0);
        struct lu_device        *d;
@@ -182,8 +181,13 @@ static int ofd_stack_init(const struct lu_env *env,
        }
 
        lmd = s2lsi(lmi->lmi_sb)->lsi_lmd;
-       if (lmd != NULL && lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
-               m->ofd_skip_lfsck = 1;
+       if (lmd) {
+               if (lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
+                       m->ofd_skip_lfsck = 1;
+               if (lmd->lmd_flags & LMD_FLG_NO_PRECREATE)
+                       m->ofd_no_precreate = 1;
+               *lmd_flags = lmd->lmd_flags;
+       }
 
        /* find bottom osd */
        OBD_ALLOC(osdname, MTI_NAME_MAXLEN);
@@ -237,26 +241,53 @@ static void ofd_stack_fini(const struct lu_env *env, struct ofd_device *m,
        if (obd->obd_fail)
                strcat(flags, "A");
        lustre_cfg_bufs_set_string(&bufs, 1, flags);
-       lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
-       if (lcfg == NULL)
+       OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
+       if (!lcfg)
                RETURN_EXIT;
+       lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs);
 
        LASSERT(top);
        top->ld_ops->ldo_process_config(env, top, lcfg);
-       lustre_cfg_free(lcfg);
+       OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
 
-       lu_site_purge(env, top->ld_site, ~0);
-       if (!cfs_hash_is_empty(top->ld_site->ls_obj_hash)) {
-               LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
-               lu_site_print(env, top->ld_site, &msgdata, lu_cdebug_printer);
+       if (m->ofd_los != NULL) {
+               local_oid_storage_fini(env, m->ofd_los);
+               m->ofd_los = NULL;
        }
 
+       lu_site_purge(env, top->ld_site, ~0);
+       lu_site_print(env, top->ld_site, &top->ld_site->ls_obj_hash.nelems,
+                     D_OTHER, lu_cdebug_printer);
        LASSERT(m->ofd_osd_exp);
        obd_disconnect(m->ofd_osd_exp);
 
        EXIT;
 }
 
+static void ofd_stack_pre_fini(const struct lu_env *env, struct ofd_device *m,
+                              struct lu_device *top)
+{
+       struct lustre_cfg_bufs bufs;
+       struct lustre_cfg *lcfg;
+       ENTRY;
+
+       LASSERT(top);
+
+       lustre_cfg_bufs_reset(&bufs, ofd_name(m));
+       lustre_cfg_bufs_set_string(&bufs, 1, NULL);
+       OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
+       if (!lcfg) {
+               CERROR("%s: failed to trigger LCFG_PRE_CLEANUP\n", ofd_name(m));
+       } else {
+               lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, &bufs);
+               top->ld_ops->ldo_process_config(env, top, lcfg);
+               OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount,
+                                             lcfg->lcfg_buflens));
+       }
+
+       EXIT;
+}
+
 /* For interoperability, see mdt_interop_param[]. */
 static struct cfg_interop_param ofd_interop_param[] = {
        { "ost.quota_type",     NULL },
@@ -291,13 +322,7 @@ static bool match_symlink_param(char *param)
                sval = strchr(param, '=');
                if (sval != NULL) {
                        paramlen = sval - param;
-                       if (strncmp(param, "writethrough_cache_enable",
-                                   paramlen) == 0 ||
-                           strncmp(param, "readcache_max_filesize",
-                                   paramlen) == 0 ||
-                           strncmp(param, "read_cache_enable",
-                                   paramlen) == 0 ||
-                           strncmp(param, "brw_stats", paramlen) == 0)
+                       if (strncmp(param, "brw_stats", paramlen) == 0)
                                return true;
                }
        }
@@ -330,11 +355,11 @@ static int ofd_process_config(const struct lu_env *env, struct lu_device *d,
 
        switch (cfg->lcfg_command) {
        case LCFG_PARAM: {
-               struct obd_device       *obd = ofd_obd(m);
                /* For interoperability */
-               struct cfg_interop_param   *ptr = NULL;
-               struct lustre_cfg          *old_cfg = NULL;
-               char                       *param = NULL;
+               struct cfg_interop_param *ptr = NULL;
+               struct lustre_cfg *old_cfg = NULL;
+               char *param = NULL;
+               ssize_t count;
 
                param = lustre_cfg_string(cfg, 1);
                if (param == NULL) {
@@ -368,14 +393,16 @@ static int ofd_process_config(const struct lu_env *env, struct lu_device *d,
                        break;
                }
 
-               rc = class_process_proc_param(PARAM_OST, obd->obd_vars, cfg,
-                                             d->ld_obd);
-               if (rc > 0 || rc == -ENOSYS) {
-                       CDEBUG(D_CONFIG, "pass param %s down the stack.\n",
-                              param);
-                       /* we don't understand; pass it on */
-                       rc = next->ld_ops->ldo_process_config(env, next, cfg);
+               count = class_modify_config(cfg, PARAM_OST,
+                                           &d->ld_obd->obd_kset.kobj);
+               if (count > 0) {
+                       rc = 0;
+                       break;
                }
+               CDEBUG(D_CONFIG, "pass param %s down the stack.\n",
+                      param);
+               /* we don't understand; pass it on */
+               rc = next->ld_ops->ldo_process_config(env, next, cfg);
                break;
        }
        case LCFG_SPTLRPC_CONF: {
@@ -425,6 +452,14 @@ static int ofd_object_init(const struct lu_env *env, struct lu_object *o,
        RETURN(rc);
 }
 
+static void ofd_object_free_rcu(struct rcu_head *head)
+{
+       struct ofd_object *of = container_of(head, struct ofd_object,
+                                            ofo_header.loh_rcu);
+
+       kmem_cache_free(ofd_object_kmem, of);
+}
+
 /**
  * Implementation of lu_object_operations::loo_object_free.
  *
@@ -446,7 +481,8 @@ static void ofd_object_free(const struct lu_env *env, struct lu_object *o)
 
        lu_object_fini(o);
        lu_object_header_fini(h);
-       OBD_SLAB_FREE_PTR(of, ofd_object_kmem);
+       OBD_FREE_PRE(of, sizeof(*of), "slab-freed");
+       call_rcu(&of->ofo_header.loh_rcu, ofd_object_free_rcu);
        EXIT;
 }
 
@@ -470,7 +506,7 @@ static int ofd_object_print(const struct lu_env *env, void *cookie,
        return (*p)(env, cookie, LUSTRE_OST_NAME"-object@%p", o);
 }
 
-static struct lu_object_operations ofd_obj_ops = {
+static const struct lu_object_operations ofd_obj_ops = {
        .loo_object_init        = ofd_object_init,
        .loo_object_free        = ofd_object_free,
        .loo_object_print       = ofd_object_print
@@ -508,6 +544,7 @@ static struct lu_object *ofd_object_alloc(const struct lu_env *env,
                lu_object_init(o, h, d);
                lu_object_add_top(h, o);
                o->lo_ops = &ofd_obj_ops;
+               range_lock_tree_init(&of->ofo_write_tree);
                RETURN(o);
        } else {
                RETURN(NULL);
@@ -609,6 +646,8 @@ static int ofd_prepare(const struct lu_env *env, struct lu_device *pdev,
        LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
 
        target_recovery_init(&ofd->ofd_lut, tgt_request_handle);
+       OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_OST_PREPARE_DELAY, OBD_FAIL_ONCE,
+                              (OBD_TIMEOUT_DEFAULT + 1) / 4);
        LASSERT(obd->obd_no_conn);
        spin_lock(&obd->obd_dev_lock);
        obd->obd_no_conn = 0;
@@ -663,82 +702,14 @@ static int ofd_recovery_complete(const struct lu_env *env,
 /**
  * lu_device_operations matrix for OFD device.
  */
-static struct lu_device_operations ofd_lu_ops = {
+static const struct lu_device_operations ofd_lu_ops = {
        .ldo_object_alloc       = ofd_object_alloc,
        .ldo_process_config     = ofd_process_config,
        .ldo_recovery_complete  = ofd_recovery_complete,
        .ldo_prepare            = ofd_prepare,
 };
 
-LPROC_SEQ_FOPS(lprocfs_nid_stats_clear);
-
-/**
- * Initialize all needed procfs entries for OFD device.
- *
- * \param[in] ofd      OFD device
- *
- * \retval             0 if successful
- * \retval             negative value on error
- */
-static int ofd_procfs_init(struct ofd_device *ofd)
-{
-       struct obd_device               *obd = ofd_obd(ofd);
-       struct proc_dir_entry           *entry;
-       int                              rc = 0;
-
-       ENTRY;
-
-       /* lprocfs must be setup before the ofd so state can be safely added
-        * to /proc incrementally as the ofd is setup */
-       obd->obd_vars = lprocfs_ofd_obd_vars;
-       rc = lprocfs_obd_setup(obd);
-       if (rc) {
-               CERROR("%s: lprocfs_obd_setup failed: %d.\n",
-                      obd->obd_name, rc);
-               RETURN(rc);
-       }
-
-       rc = lprocfs_alloc_obd_stats(obd, LPROC_OFD_STATS_LAST);
-       if (rc) {
-               CERROR("%s: lprocfs_alloc_obd_stats failed: %d.\n",
-                      obd->obd_name, rc);
-               GOTO(obd_cleanup, rc);
-       }
-
-       obd->obd_uses_nid_stats = 1;
-
-       entry = lprocfs_register("exports", obd->obd_proc_entry, NULL, NULL);
-       if (IS_ERR(entry)) {
-               rc = PTR_ERR(entry);
-               CERROR("%s: error %d setting up lprocfs for %s\n",
-                      obd->obd_name, rc, "exports");
-               GOTO(obd_cleanup, rc);
-       }
-       obd->obd_proc_exports_entry = entry;
-
-       entry = lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
-                                  obd, &lprocfs_nid_stats_clear_fops);
-       if (IS_ERR(entry)) {
-               rc = PTR_ERR(entry);
-               CERROR("%s: add proc entry 'clear' failed: %d.\n",
-                      obd->obd_name, rc);
-               GOTO(obd_cleanup, rc);
-       }
-
-       ofd_stats_counter_init(obd->obd_stats);
-
-       rc = lprocfs_job_stats_init(obd, LPROC_OFD_STATS_LAST,
-                                   ofd_stats_counter_init);
-       if (rc)
-               GOTO(obd_cleanup, rc);
-       RETURN(0);
-obd_cleanup:
-       lprocfs_obd_cleanup(obd);
-       lprocfs_free_obd_stats(obd);
-
-       return rc;
-}
-
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 53, 0)
 /**
  * Expose OSD statistics to OFD layer.
  *
@@ -752,8 +723,31 @@ obd_cleanup:
  */
 static void ofd_procfs_add_brw_stats_symlink(struct ofd_device *ofd)
 {
-       struct obd_device       *obd = ofd_obd(ofd);
-       struct obd_device       *osd_obd = ofd->ofd_osd_exp->exp_obd;
+       struct obd_device *obd = ofd_obd(ofd);
+       struct obd_device *osd_obd = ofd->ofd_osd_exp->exp_obd;
+       struct kobj_type *osd_type;
+       int i;
+
+       osd_type = get_ktype(&ofd->ofd_osd->dd_kobj);
+       for (i = 0; osd_type->default_attrs[i]; i++) {
+               if (strcmp(osd_type->default_attrs[i]->name,
+                          "read_cache_enable") == 0) {
+                       ofd->ofd_read_cache_enable =
+                               osd_type->default_attrs[i];
+               }
+
+               if (strcmp(osd_type->default_attrs[i]->name,
+                          "readcache_max_filesize") == 0) {
+                       ofd->ofd_read_cache_max_filesize =
+                               osd_type->default_attrs[i];
+               }
+
+               if (strcmp(osd_type->default_attrs[i]->name,
+                          "writethrough_cache_enable") == 0) {
+                       ofd->ofd_write_cache_enable =
+                               osd_type->default_attrs[i];
+               }
+       }
 
        if (obd->obd_proc_entry == NULL)
                return;
@@ -761,21 +755,8 @@ static void ofd_procfs_add_brw_stats_symlink(struct ofd_device *ofd)
        lprocfs_add_symlink("brw_stats", obd->obd_proc_entry,
                            "../../%s/%s/brw_stats",
                            osd_obd->obd_type->typ_name, obd->obd_name);
-
-       lprocfs_add_symlink("read_cache_enable", obd->obd_proc_entry,
-                           "../../%s/%s/read_cache_enable",
-                           osd_obd->obd_type->typ_name, obd->obd_name);
-
-       lprocfs_add_symlink("readcache_max_filesize",
-                           obd->obd_proc_entry,
-                           "../../%s/%s/readcache_max_filesize",
-                           osd_obd->obd_type->typ_name, obd->obd_name);
-
-       lprocfs_add_symlink("writethrough_cache_enable",
-                           obd->obd_proc_entry,
-                           "../../%s/%s/writethrough_cache_enable",
-                           osd_obd->obd_type->typ_name, obd->obd_name);
 }
+#endif
 
 /**
  * Cleanup all procfs entries in OFD.
@@ -786,6 +767,7 @@ static void ofd_procfs_fini(struct ofd_device *ofd)
 {
        struct obd_device *obd = ofd_obd(ofd);
 
+       tgt_tunables_fini(&ofd->ofd_lut);
        lprocfs_free_per_client_stats(obd);
        lprocfs_obd_cleanup(obd);
        lprocfs_free_obd_stats(obd);
@@ -825,18 +807,19 @@ int ofd_fid_fini(const struct lu_env *env, struct ofd_device *ofd)
  */
 int ofd_fid_init(const struct lu_env *env, struct ofd_device *ofd)
 {
-       struct seq_server_site  *ss = &ofd->ofd_seq_site;
-       struct lu_device        *lu = &ofd->ofd_dt_dev.dd_lu_dev;
-       char                    *obd_name = ofd_name(ofd);
-       char                    *name = NULL;
-       int                     rc = 0;
+       struct seq_server_site *ss = &ofd->ofd_seq_site;
+       struct lu_device *lu = &ofd->ofd_dt_dev.dd_lu_dev;
+       char *obd_name = ofd_name(ofd);
+       char *name = NULL;
+       int len = strlen(obd_name) + 7;
+       int rc = 0;
 
        ss = &ofd->ofd_seq_site;
        lu->ld_site->ld_seq_site = ss;
        ss->ss_lu = lu->ld_site;
        ss->ss_node_id = ofd->ofd_lut.lut_lsd.lsd_osd_index;
 
-       OBD_ALLOC(name, sizeof(obd_name) * 2 + 10);
+       OBD_ALLOC(name, len);
        if (name == NULL)
                return -ENOMEM;
 
@@ -847,7 +830,7 @@ int ofd_fid_init(const struct lu_env *env, struct ofd_device *ofd)
        rc = seq_server_init(env, ss->ss_server_seq, ofd->ofd_osd, obd_name,
                             LUSTRE_SEQ_SERVER, ss);
        if (rc) {
-               CERROR("%s : seq server init error %d\n", obd_name, rc);
+               CERROR("%s: seq server init error: rc = %d\n", obd_name, rc);
                GOTO(out_server, rc);
        }
        ss->ss_server_seq->lss_space.lsr_index = ss->ss_node_id;
@@ -856,22 +839,13 @@ int ofd_fid_init(const struct lu_env *env, struct ofd_device *ofd)
        if (ss->ss_client_seq == NULL)
                GOTO(out_server, rc = -ENOMEM);
 
-       /*
-        * It always printed as "%p", so that the name is unique in the kernel,
-        * even if the filesystem is mounted twice. So sizeof(.) * 2 is enough.
-        */
-       snprintf(name, sizeof(obd_name) * 2 + 7, "%p-super", obd_name);
-       rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_DATA,
-                            name, NULL);
-       if (rc) {
-               CERROR("%s : seq client init error %d\n", obd_name, rc);
-               GOTO(out_client, rc);
-       }
+       snprintf(name, len, "%s-super", obd_name);
+       seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_DATA,
+                       name, NULL);
 
        rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
 
        if (rc) {
-out_client:
                seq_client_fini(ss->ss_client_seq);
                OBD_FREE_PTR(ss->ss_client_seq);
                ss->ss_client_seq = NULL;
@@ -881,7 +855,7 @@ out_server:
                ss->ss_server_seq = NULL;
        }
 out_name:
-       OBD_FREE(name, sizeof(obd_name) * 2 + 10);
+       OBD_FREE(name, len);
 
        return rc;
 }
@@ -903,6 +877,7 @@ static int ofd_set_info_hdl(struct tgt_session_info *tsi)
        void                    *key, *val = NULL;
        int                      keylen, vallen, rc = 0;
        bool                     is_grant_shrink;
+       ktime_t                  kstart = ktime_get();
 
        ENTRY;
 
@@ -935,6 +910,19 @@ static int ofd_set_info_hdl(struct tgt_session_info *tsi)
        if (is_grant_shrink) {
                body = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_BODY);
 
+               /*
+                * Because we already sync grant info with client when
+                * reconnect, grant info will be cleared for resent
+                * req, otherwise, outdated grant count in the rpc
+                * would de-sync grant counters
+                */
+               if (lustre_msg_get_flags(req->rq_reqmsg) &
+                   (MSG_RESENT | MSG_REPLAY)) {
+                       DEBUG_REQ(D_CACHE, req,
+                                 "clear resent/replay req grant info");
+                       body->oa.o_valid &= ~OBD_MD_FLGRANT;
+               }
+
                repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
                *repbody = *body;
 
@@ -951,7 +939,7 @@ static int ofd_set_info_hdl(struct tgt_session_info *tsi)
                rc = -EOPNOTSUPP;
        }
        ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SET_INFO,
-                        tsi->tsi_jobid, 1);
+                        tsi->tsi_jobid, ktime_us_delta(ktime_get(), kstart));
 
        RETURN(rc);
 }
@@ -993,48 +981,25 @@ int ofd_fiemap_get(const struct lu_env *env, struct ofd_device *ofd,
        return rc;
 }
 
-struct locked_region {
-       struct list_head        list;
-       struct lustre_handle    lh;
-};
 
-/**
- * Lock single extent and save lock handle in the list.
- *
- * This is supplemental function for lock_zero_regions(). It allocates
- * new locked_region structure and locks it with extent lock, then adds
- * it to the list of all such regions.
- *
- * \param[in] ns       LDLM namespace
- * \param[in] res_id   resource ID
- * \param[in] begin    start of region
- * \param[in] end      end of region
- * \param[in] locked   list head of regions list
- *
- * \retval             0 if successful locking
- * \retval             negative value on error
- */
-static int lock_region(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
-                      unsigned long long begin, unsigned long long end,
-                      struct list_head *locked)
+static int ofd_lock_unlock_region(const struct lu_env *env,
+                                 struct ldlm_namespace *ns,
+                                 struct ldlm_res_id *res_id,
+                                 unsigned long long begin,
+                                 unsigned long long end)
 {
-       struct locked_region    *region = NULL;
        __u64                    flags = 0;
        int                      rc;
+       struct lustre_handle     lh = { 0 };
 
        LASSERT(begin <= end);
-       OBD_ALLOC_PTR(region);
-       if (region == NULL)
-               return -ENOMEM;
 
-       rc = tgt_extent_lock(ns, res_id, begin, end, &region->lh,
-                            LCK_PR, &flags);
+       rc = tgt_extent_lock(env, ns, res_id, begin, end, &lh, LCK_PR, &flags);
        if (rc != 0)
                return rc;
 
-       CDEBUG(D_OTHER, "ost lock [%llu,%llu], lh=%p\n", begin, end,
-              &region->lh);
-       list_add(&region->list, locked);
+       CDEBUG(D_OTHER, "ost lock [%llu,%llu], lh=%p\n", begin, end, &lh);
+       tgt_data_unlock(&lh, LCK_PR);
 
        return 0;
 }
@@ -1057,10 +1022,10 @@ static int lock_region(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
  * \retval             0 if successful
  * \retval             negative value on error
  */
-static int lock_zero_regions(struct ldlm_namespace *ns,
+static int lock_zero_regions(const struct lu_env *env,
+                            struct ldlm_namespace *ns,
                             struct ldlm_res_id *res_id,
-                            struct fiemap *fiemap,
-                            struct list_head *locked)
+                            struct fiemap *fiemap)
 {
        __u64 begin = fiemap->fm_start;
        unsigned int i;
@@ -1074,8 +1039,8 @@ static int lock_zero_regions(struct ldlm_namespace *ns,
                if (fiemap_start[i].fe_logical > begin) {
                        CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
                               begin, fiemap_start[i].fe_logical);
-                       rc = lock_region(ns, res_id, begin,
-                                        fiemap_start[i].fe_logical, locked);
+                       rc = ofd_lock_unlock_region(env, ns, res_id, begin,
+                                                   fiemap_start[i].fe_logical);
                        if (rc)
                                RETURN(rc);
                }
@@ -1086,34 +1051,13 @@ static int lock_zero_regions(struct ldlm_namespace *ns,
        if (begin < (fiemap->fm_start + fiemap->fm_length)) {
                CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
                       begin, fiemap->fm_start + fiemap->fm_length);
-               rc = lock_region(ns, res_id, begin,
-                                fiemap->fm_start + fiemap->fm_length, locked);
+               rc = ofd_lock_unlock_region(env, ns, res_id, begin,
+                               fiemap->fm_start + fiemap->fm_length);
        }
 
        RETURN(rc);
 }
 
-/**
- * Unlock all previously locked sparse areas for given resource.
- *
- * This function goes through list of locked regions, unlocking and freeing
- * them one-by-one.
- *
- * \param[in] ns       LDLM namespace
- * \param[in] locked   list head of regions list
- */
-static void
-unlock_zero_regions(struct ldlm_namespace *ns, struct list_head *locked)
-{
-       struct locked_region *entry, *temp;
-
-       list_for_each_entry_safe(entry, temp, locked, list) {
-               CDEBUG(D_OTHER, "ost unlock lh=%p\n", &entry->lh);
-               tgt_extent_unlock(&entry->lh, LCK_PR);
-               list_del(&entry->list);
-               OBD_FREE_PTR(entry);
-       }
-}
 
 /**
  * OFD request handler for OST_GET_INFO RPC.
@@ -1141,6 +1085,7 @@ static int ofd_get_info_hdl(struct tgt_session_info *tsi)
        void                            *key;
        int                              keylen;
        int                              replylen, rc = 0;
+       ktime_t                          kstart = ktime_get();
 
        ENTRY;
 
@@ -1207,19 +1152,12 @@ static int ofd_get_info_hdl(struct tgt_session_info *tsi)
                 * flushed back from client, then call fiemap again. */
                if (fm_key->lfik_oa.o_valid & OBD_MD_FLFLAGS &&
                    fm_key->lfik_oa.o_flags & OBD_FL_SRVLOCK) {
-                       struct list_head locked;
-
-                       INIT_LIST_HEAD(&locked);
                        ost_fid_build_resid(fid, &fti->fti_resid);
-                       rc = lock_zero_regions(ofd->ofd_namespace,
-                                              &fti->fti_resid, fiemap,
-                                              &locked);
-                       if (rc == 0 && !list_empty(&locked)) {
+                       rc = lock_zero_regions(tsi->tsi_env, ofd->ofd_namespace,
+                                              &fti->fti_resid, fiemap);
+                       if (rc == 0)
                                rc = ofd_fiemap_get(tsi->tsi_env, ofd, fid,
                                                    fiemap);
-                               unlock_zero_regions(ofd->ofd_namespace,
-                                                   &locked);
-                       }
                }
        } else if (KEY_IS(KEY_LAST_FID)) {
                struct ofd_device       *ofd = ofd_exp(exp);
@@ -1262,7 +1200,7 @@ out_put:
                rc = -EOPNOTSUPP;
        }
        ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_GET_INFO,
-                        tsi->tsi_jobid, 1);
+                        tsi->tsi_jobid, ktime_us_delta(ktime_get(), kstart));
 
        RETURN(rc);
 }
@@ -1287,6 +1225,7 @@ static int ofd_getattr_hdl(struct tgt_session_info *tsi)
        struct ofd_object       *fo;
        __u64                    flags = 0;
        enum ldlm_mode           lock_mode = LCK_PR;
+       ktime_t                  kstart = ktime_get();
        bool                     srvlock;
        int                      rc;
        ENTRY;
@@ -1307,7 +1246,8 @@ static int ofd_getattr_hdl(struct tgt_session_info *tsi)
                if (unlikely(tsi->tsi_ost_body->oa.o_flags & OBD_FL_FLUSH))
                        lock_mode = LCK_PW;
 
-               rc = tgt_extent_lock(tsi->tsi_tgt->lut_obd->obd_namespace,
+               rc = tgt_extent_lock(tsi->tsi_env,
+                                    tsi->tsi_tgt->lut_obd->obd_namespace,
                                     &tsi->tsi_resid, 0, OBD_OBJECT_EOF, &lh,
                                     lock_mode, &flags);
                if (rc != 0)
@@ -1332,15 +1272,25 @@ static int ofd_getattr_hdl(struct tgt_session_info *tsi)
                        repbody->oa.o_valid |= OBD_MD_FLDATAVERSION;
                        repbody->oa.o_data_version = curr_version;
                }
+
+               if (fo->ofo_ff.ff_layout_version > 0) {
+                       repbody->oa.o_valid |= OBD_MD_LAYOUT_VERSION;
+                       repbody->oa.o_layout_version =
+                            fo->ofo_ff.ff_layout_version + fo->ofo_ff.ff_range;
+
+                       CDEBUG(D_INODE, DFID": get layout version: %u\n",
+                              PFID(&tsi->tsi_fid),
+                              repbody->oa.o_layout_version);
+               }
        }
 
        ofd_object_put(tsi->tsi_env, fo);
 out:
        if (srvlock)
-               tgt_extent_unlock(&lh, lock_mode);
+               tgt_data_unlock(&lh, lock_mode);
 
        ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_GETATTR,
-                        tsi->tsi_jobid, 1);
+                        tsi->tsi_jobid, ktime_us_delta(ktime_get(), kstart));
 
        repbody->oa.o_valid |= OBD_MD_FLFLAGS;
        repbody->oa.o_flags = OBD_FL_FLUSH;
@@ -1367,7 +1317,7 @@ static int ofd_setattr_hdl(struct tgt_session_info *tsi)
        struct ost_body         *repbody;
        struct ldlm_resource    *res;
        struct ofd_object       *fo;
-       struct filter_fid       *ff = NULL;
+       ktime_t                  kstart = ktime_get();
        int                      rc = 0;
 
        ENTRY;
@@ -1407,13 +1357,8 @@ static int ofd_setattr_hdl(struct tgt_session_info *tsi)
        la_from_obdo(&fti->fti_attr, &body->oa, body->oa.o_valid);
        fti->fti_attr.la_valid &= ~LA_TYPE;
 
-       if (body->oa.o_valid & OBD_MD_FLFID) {
-               ff = &fti->fti_mds_fid;
-               ofd_prepare_fidea(ff, &body->oa);
-       }
-
        /* setting objects attributes (including owner/group) */
-       rc = ofd_attr_set(tsi->tsi_env, fo, &fti->fti_attr, ff);
+       rc = ofd_attr_set(tsi->tsi_env, fo, &fti->fti_attr, &body->oa);
        if (rc != 0)
                GOTO(out_put, rc);
 
@@ -1421,7 +1366,7 @@ static int ofd_setattr_hdl(struct tgt_session_info *tsi)
                     OFD_VALID_FLAGS | LA_UID | LA_GID | LA_PROJID);
 
        ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SETATTR,
-                        tsi->tsi_jobid, 1);
+                        tsi->tsi_jobid, ktime_us_delta(ktime_get(), kstart));
        EXIT;
 out_put:
        ofd_object_put(tsi->tsi_env, fo);
@@ -1526,8 +1471,7 @@ done:
                rc = ofd_seq_last_oid_write(env, ofd, oseq);
        } else {
                /* don't reuse orphan object, return last used objid */
-               ostid_set_id(oi, last);
-               rc = 0;
+               rc = ostid_set_id(oi, last);
        }
 
        GOTO(out_put, rc);
@@ -1559,15 +1503,20 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
        u64                      seq = ostid_seq(&oa->o_oi);
        u64                      oid = ostid_id(&oa->o_oi);
        struct ofd_seq          *oseq;
-       int                      rc = 0, diff;
        int                      sync_trans = 0;
        long                     granted = 0;
+       ktime_t                  kstart = ktime_get();
+       s64                      diff;
+       int                      rc = 0;
 
        ENTRY;
 
        if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
                RETURN(-EROFS);
 
+       if (ofd->ofd_no_precreate)
+               return -EPERM;
+
        repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
        if (repbody == NULL)
                RETURN(-ENOMEM);
@@ -1622,18 +1571,27 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
                oseq->os_destroys_in_progress = 1;
                mutex_lock(&oseq->os_create_lock);
                if (!oseq->os_destroys_in_progress) {
-                       CERROR("%s:[%llu] destroys_in_progress already"
-                              " cleared\n", ofd_name(ofd), seq);
-                       ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq));
-                       GOTO(out, rc = 0);
+                       CDEBUG(D_HA,
+                              "%s:[%llu] destroys_in_progress already cleared\n",
+                              ofd_name(ofd), seq);
+                       rc = ostid_set_id(&rep_oa->o_oi,
+                                         ofd_seq_last_oid(oseq));
+                       GOTO(out, rc);
                }
                diff = oid - ofd_seq_last_oid(oseq);
-               CDEBUG(D_HA, "ofd_last_id() = %llu -> diff = %d\n",
-                       ofd_seq_last_oid(oseq), diff);
+               CDEBUG(D_HA, "ofd_last_id() = %llu -> diff = %lld\n",
+                      ofd_seq_last_oid(oseq), diff);
                if (-diff > OST_MAX_PRECREATE) {
+                       LCONSOLE(D_INFO, "%s: too large difference between MDS "
+                                "LAST_ID "DFID" (%llu) and OST LAST_ID "DFID" "
+                                "(%llu), trust the OST\n",
+                                ofd_name(ofd), PFID(&oa->o_oi.oi_fid), oid,
+                                PFID(&oseq->os_oi.oi_fid),
+                                ofd_seq_last_oid(oseq));
+
                        /* Let MDS know that we are so far ahead. */
-                       ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq) + 1);
-                       rc = 0;
+                       rc = ostid_set_id(&rep_oa->o_oi,
+                                         ofd_seq_last_oid(oseq) + 1);
                } else if (diff < 0) {
                        rc = ofd_orphans_destroy(tsi->tsi_env, exp,
                                                 ofd, rep_oa);
@@ -1678,7 +1636,7 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
                                GOTO(out, rc = -EINVAL);
                        }
 
-                       if (diff < 0) {
+                       if (diff <= -OST_MAX_PRECREATE) {
                                /* LU-5648 */
                                CERROR("%s: invalid precreate request for "
                                       DOSTID", last_id %llu. "
@@ -1686,14 +1644,24 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
                                       ofd_name(ofd), POSTID(&oa->o_oi),
                                       ofd_seq_last_oid(oseq));
                                GOTO(out, rc = -EINVAL);
+                       } else if (diff < 0) {
+                               LCONSOLE(D_INFO,
+                                        "%s: MDS LAST_ID "DFID" (%llu) is %lld behind OST LAST_ID "DFID" (%llu), trust the OST\n",
+                                        ofd_name(ofd), PFID(&oa->o_oi.oi_fid),
+                                        oid, -diff, PFID(&oseq->os_oi.oi_fid),
+                                        ofd_seq_last_oid(oseq));
+                               /* Let MDS know that we are so far ahead. */
+                               rc = ostid_set_id(&rep_oa->o_oi,
+                                                 ofd_seq_last_oid(oseq) + 1);
                        }
                }
        }
        if (diff > 0) {
-               cfs_time_t       enough_time = cfs_time_shift(DISK_TIMEOUT);
-               u64              next_id;
-               int              created = 0;
-               int              count;
+               time64_t enough_time = ktime_get_seconds() + DISK_TIMEOUT;
+               u64 next_id;
+               int created = 0;
+               int count;
+               int rc2;
 
                if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
                    !(oa->o_flags & OBD_FL_DELORPHAN)) {
@@ -1705,7 +1673,7 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
                                rc = granted;
                                granted = 0;
                                CDEBUG(D_HA, "%s: failed to acquire grant "
-                                      "space for precreate (%d): rc = %d\n",
+                                      "space for precreate (%lld): rc = %d\n",
                                       ofd_name(ofd), diff, rc);
                                diff = 0;
                        }
@@ -1717,32 +1685,26 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
                 * (possibly filling the OST), only precreate the last batch.
                 * LFSCK will eventually clean up any orphans. LU-14 */
                if (diff > 5 * OST_MAX_PRECREATE) {
+                       /* Message below is checked in conf-sanity test_122b */
+                       LCONSOLE_WARN("%s: precreate FID "DOSTID" is over %lld higher than LAST_ID "DOSTID", only precreating the last %u objects. OST replaced or reformatted?\n",
+                                     ofd_name(ofd), POSTID(&oa->o_oi), diff,
+                                     POSTID(&oseq->os_oi),
+                                     OST_MAX_PRECREATE / 2);
                        diff = OST_MAX_PRECREATE / 2;
-                       LCONSOLE_WARN("%s: Too many FIDs to precreate "
-                                     "OST replaced or reformatted: "
-                                     "LFSCK will clean up",
-                                     ofd_name(ofd));
-
-                       CDEBUG(D_HA, "%s: precreate FID "DOSTID" is over "
-                              "%u larger than the LAST_ID "DOSTID", only "
-                              "precreating the last %u objects.\n",
-                              ofd_name(ofd), POSTID(&oa->o_oi),
-                              5 * OST_MAX_PRECREATE,
-                              POSTID(&oseq->os_oi), diff);
                        ofd_seq_last_oid_set(oseq, ostid_id(&oa->o_oi) - diff);
                }
 
                while (diff > 0) {
                        next_id = ofd_seq_last_oid(oseq) + 1;
-                       count = ofd_precreate_batch(ofd, diff);
+                       count = ofd_precreate_batch(ofd, (int)diff);
 
                        CDEBUG(D_HA, "%s: reserve %d objects in group %#llx"
                               " at %llu\n", ofd_name(ofd),
                               count, seq, next_id);
 
                        if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
-                           && cfs_time_after(jiffies, enough_time)) {
-                               CDEBUG(D_HA, "%s: Slow creates, %d/%d objects"
+                           && ktime_get_seconds() > enough_time) {
+                               CDEBUG(D_HA, "%s: Slow creates, %d/%lld objects"
                                      " created at a rate of %d/s\n",
                                      ofd_name(ofd), created, diff + created,
                                      created / DISK_TIMEOUT);
@@ -1763,7 +1725,7 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
                    lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
                        LCONSOLE_WARN("%s: can't create the same count of"
                                      " objects when replaying the request"
-                                     " (diff is %d). see LU-4621\n",
+                                     " (diff is %lld). see LU-4621\n",
                                      ofd_name(ofd), diff);
 
                if (created > 0)
@@ -1781,26 +1743,19 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
                        granted = 0;
                }
 
-               ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq));
+               rc2 = ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq));
+               rc = rc ? : rc2;
        }
        EXIT;
        ofd_counter_incr(exp, LPROC_OFD_STATS_CREATE,
-                        tsi->tsi_jobid, 1);
+                        tsi->tsi_jobid, ktime_us_delta(ktime_get(), kstart));
+       if (unlikely(!oseq->os_last_id_synced))
+               oseq->os_last_id_synced = 1;
 out:
        mutex_unlock(&oseq->os_create_lock);
 out_nolock:
-       if (rc == 0) {
-#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 8, 53, 0)
-               struct ofd_thread_info  *info = ofd_info(tsi->tsi_env);
-               struct lu_fid           *fid = &info->fti_fid;
-
-               /* For compatible purpose, it needs to convert back to
-                * OST ID before put it on wire. */
-               *fid = rep_oa->o_oi.oi_fid;
-               fid_to_ostid(fid, &rep_oa->o_oi);
-#endif
+       if (rc == 0)
                rep_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
-       }
        ofd_seq_put(tsi->tsi_env, oseq);
 
 out_sem:
@@ -1826,6 +1781,7 @@ static int ofd_destroy_hdl(struct tgt_session_info *tsi)
        struct ofd_device       *ofd = ofd_exp(tsi->tsi_exp);
        struct ofd_thread_info  *fti = tsi2ofd_info(tsi);
        struct lu_fid           *fid = &fti->fti_fid;
+       ktime_t                  kstart = ktime_get();
        u64                      oid;
        u32                      count;
        int                      rc = 0;
@@ -1887,7 +1843,7 @@ static int ofd_destroy_hdl(struct tgt_session_info *tsi)
        }
 
        ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_DESTROY,
-                        tsi->tsi_jobid, 1);
+                        tsi->tsi_jobid, ktime_us_delta(ktime_get(), kstart));
 
        GOTO(out, rc);
 
@@ -1909,15 +1865,18 @@ out:
  */
 static int ofd_statfs_hdl(struct tgt_session_info *tsi)
 {
+       ktime_t                  kstart = ktime_get();
        struct obd_statfs       *osfs;
        int                      rc;
 
        ENTRY;
 
+       OBD_FAIL_TIMEOUT(OBD_FAIL_OST_STATFS_DELAY, 10);
+
        osfs = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_STATFS);
 
        rc = ofd_statfs(tsi->tsi_env, tsi->tsi_exp, osfs,
-                       cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), 0);
+                       ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS, 0);
        if (rc != 0)
                CERROR("%s: statfs failed: rc = %d\n",
                       tgt_name(tsi->tsi_tgt), rc);
@@ -1926,7 +1885,7 @@ static int ofd_statfs_hdl(struct tgt_session_info *tsi)
                rc = -EINPROGRESS;
 
        ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_STATFS,
-                        tsi->tsi_jobid, 1);
+                        tsi->tsi_jobid, ktime_us_delta(ktime_get(), kstart));
 
        RETURN(rc);
 }
@@ -1949,6 +1908,7 @@ static int ofd_sync_hdl(struct tgt_session_info *tsi)
        struct ofd_thread_info  *fti = tsi2ofd_info(tsi);
        struct ofd_device       *ofd = ofd_exp(tsi->tsi_exp);
        struct ofd_object       *fo = NULL;
+       ktime_t                  kstart = ktime_get();
        int                      rc = 0;
 
        ENTRY;
@@ -1969,7 +1929,7 @@ static int ofd_sync_hdl(struct tgt_session_info *tsi)
                GOTO(put, rc);
 
        ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SYNC,
-                        tsi->tsi_jobid, 1);
+                        tsi->tsi_jobid, ktime_us_delta(ktime_get(), kstart));
        if (fo == NULL)
                RETURN(0);
 
@@ -1991,6 +1951,129 @@ put:
 }
 
 /**
+ * OFD request handler for OST_FALLOCATE RPC.
+ *
+ * This is part of request processing. Validate request fields,
+ * preallocate the given OFD object and pack reply.
+ *
+ * \param[in] tsi      target session environment for this request
+ *
+ * \retval             0 if successful
+ * \retval             negative value on error
+ */
+static int ofd_fallocate_hdl(struct tgt_session_info *tsi)
+{
+       struct obdo *oa = &tsi->tsi_ost_body->oa;
+       struct ost_body *repbody;
+       struct ofd_thread_info *info = tsi2ofd_info(tsi);
+       struct ldlm_namespace *ns = tsi->tsi_tgt->lut_obd->obd_namespace;
+       struct ldlm_resource *res;
+       struct ofd_object *fo;
+       __u64 flags = 0;
+       __u64 valid;
+       struct lustre_handle lh = { 0, };
+       int rc, mode;
+       __u64 start, end;
+       bool srvlock;
+       ktime_t kstart = ktime_get();
+
+       repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
+       if (repbody == NULL)
+               RETURN(err_serious(-ENOMEM));
+
+       /*
+        * fallocate start and end are passed in o_size, o_blocks
+        * on the wire.
+        */
+       if ((oa->o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
+           (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
+               RETURN(err_serious(-EPROTO));
+
+       start = oa->o_size;
+       end = oa->o_blocks;
+       mode = oa->o_falloc_mode;
+       /*
+        * mode == 0 (which is standard prealloc) and PUNCH is supported
+        * Rest of mode options are not supported yet.
+        */
+       if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
+               RETURN(-EOPNOTSUPP);
+
+       /* PUNCH_HOLE mode should always be accompanied with KEEP_SIZE flag
+        * Check that and add the missing flag for such invalid call with
+        * warning.
+        */
+       if (mode & FALLOC_FL_PUNCH_HOLE && !(mode & FALLOC_FL_KEEP_SIZE)) {
+               CWARN("%s: PUNCH mode misses KEEP_SIZE flag, setting it\n",
+                     tsi->tsi_tgt->lut_obd->obd_name);
+               mode |= FALLOC_FL_KEEP_SIZE;
+       }
+
+       repbody->oa.o_oi = oa->o_oi;
+       repbody->oa.o_valid = OBD_MD_FLID;
+
+       srvlock = oa->o_valid & OBD_MD_FLFLAGS &&
+                 oa->o_flags & OBD_FL_SRVLOCK;
+
+       if (srvlock) {
+               rc = tgt_extent_lock(tsi->tsi_env, ns, &tsi->tsi_resid,
+                                    start, end, &lh, LCK_PW, &flags);
+               if (rc != 0)
+                       RETURN(rc);
+       }
+
+       fo = ofd_object_find_exists(tsi->tsi_env, ofd_exp(tsi->tsi_exp),
+                                   &tsi->tsi_fid);
+       if (IS_ERR(fo))
+               GOTO(out, rc = PTR_ERR(fo));
+
+       valid = OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLPROJID |
+               OBD_MD_FLATIME | OBD_MD_FLMTIME | OBD_MD_FLCTIME;
+       la_from_obdo(&info->fti_attr, oa, valid);
+
+       rc = ofd_object_fallocate(tsi->tsi_env, fo, start, end, mode,
+                                &info->fti_attr, oa);
+       if (rc)
+               GOTO(out_put, rc);
+
+       rc = ofd_attr_get(tsi->tsi_env, fo, &info->fti_attr);
+       if (rc == 0)
+               obdo_from_la(&repbody->oa, &info->fti_attr, OFD_VALID_FLAGS);
+       else
+               rc = 0;
+
+       ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_PREALLOC,
+                        tsi->tsi_jobid, ktime_us_delta(ktime_get(), kstart));
+
+       EXIT;
+out_put:
+       ofd_object_put(tsi->tsi_env, fo);
+out:
+       if (srvlock)
+               tgt_data_unlock(&lh, LCK_PW);
+       if (rc == 0) {
+               res = ldlm_resource_get(ns, NULL, &tsi->tsi_resid,
+                                       LDLM_EXTENT, 0);
+               if (!IS_ERR(res)) {
+                       struct ost_lvb *res_lvb;
+
+                       ldlm_res_lvbo_update(res, NULL, 0);
+                       res_lvb = res->lr_lvb_data;
+                       /* Blocks */
+                       repbody->oa.o_valid |= OBD_MD_FLBLOCKS;
+                       repbody->oa.o_blocks = res_lvb->lvb_blocks;
+                       /* Size */
+                       repbody->oa.o_valid |= OBD_MD_FLSIZE;
+                       repbody->oa.o_size = res_lvb->lvb_size;
+
+                       ldlm_resource_putref(res);
+               }
+       }
+
+       RETURN(rc);
+}
+
+/**
  * OFD request handler for OST_PUNCH RPC.
  *
  * This is part of request processing. Validate request fields,
@@ -2009,20 +2092,17 @@ static int ofd_punch_hdl(struct tgt_session_info *tsi)
        struct ldlm_namespace   *ns = tsi->tsi_tgt->lut_obd->obd_namespace;
        struct ldlm_resource    *res;
        struct ofd_object       *fo;
-       struct filter_fid       *ff = NULL;
        __u64                    flags = 0;
        struct lustre_handle     lh = { 0, };
-       int                      rc;
        __u64                    start, end;
        bool                     srvlock;
+       ktime_t                  kstart = ktime_get();
+       int                      rc;
 
        ENTRY;
 
        OBD_FAIL_TIMEOUT(OBD_FAIL_OST_PAUSE_PUNCH, cfs_fail_val);
 
-       /* check that we do support OBD_CONNECT_TRUNCLOCK. */
-       CLASSERT(OST_CONNECT_SUPPORTED & OBD_CONNECT_TRUNCLOCK);
-
        if ((oa->o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
            (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
                RETURN(err_serious(-EPROTO));
@@ -2050,8 +2130,8 @@ static int ofd_punch_hdl(struct tgt_session_info *tsi)
                  oa->o_flags & OBD_FL_SRVLOCK;
 
        if (srvlock) {
-               rc = tgt_extent_lock(ns, &tsi->tsi_resid, start, end, &lh,
-                                    LCK_PW, &flags);
+               rc = tgt_extent_lock(tsi->tsi_env, ns, &tsi->tsi_resid, start,
+                                    end, &lh, LCK_PW, &flags);
                if (rc != 0)
                        RETURN(rc);
        }
@@ -2070,24 +2150,19 @@ static int ofd_punch_hdl(struct tgt_session_info *tsi)
        info->fti_attr.la_size = start;
        info->fti_attr.la_valid |= LA_SIZE;
 
-       if (oa->o_valid & OBD_MD_FLFID) {
-               ff = &info->fti_mds_fid;
-               ofd_prepare_fidea(ff, oa);
-       }
-
        rc = ofd_object_punch(tsi->tsi_env, fo, start, end, &info->fti_attr,
-                             ff, (struct obdo *)oa);
+                             (struct obdo *)oa);
        if (rc)
                GOTO(out_put, rc);
 
        ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_PUNCH,
-                        tsi->tsi_jobid, 1);
+                        tsi->tsi_jobid, ktime_us_delta(ktime_get(), kstart));
        EXIT;
 out_put:
        ofd_object_put(tsi->tsi_env, fo);
 out:
        if (srvlock)
-               tgt_extent_unlock(&lh, LCK_PW);
+               tgt_data_unlock(&lh, LCK_PW);
        if (rc == 0) {
                /* we do not call this before to avoid lu_object_find() in
                 *  ->lvbo_update() holding another reference on the object.
@@ -2097,7 +2172,12 @@ out:
                res = ldlm_resource_get(ns, NULL, &tsi->tsi_resid,
                                        LDLM_EXTENT, 0);
                if (!IS_ERR(res)) {
+                       struct ost_lvb *res_lvb;
+
                        ldlm_res_lvbo_update(res, NULL, 0);
+                       res_lvb = res->lr_lvb_data;
+                       repbody->oa.o_valid |= OBD_MD_FLBLOCKS;
+                       repbody->oa.o_blocks = res_lvb->lvb_blocks;
                        ldlm_resource_putref(res);
                }
        }
@@ -2107,13 +2187,13 @@ out:
 static int ofd_ladvise_prefetch(const struct lu_env *env,
                                struct ofd_object *fo,
                                struct niobuf_local *lnb,
-                               __u64 start, __u64 end)
+                               __u64 start, __u64 end, enum dt_bufs_type dbt)
 {
-       struct ofd_thread_info  *info = ofd_info(env);
-       pgoff_t                  start_index, end_index, pages;
-       struct niobuf_remote     rnb;
-       unsigned long            nr_local;
-       int                      rc = 0;
+       struct ofd_thread_info *info = ofd_info(env);
+       pgoff_t start_index, end_index, pages;
+       struct niobuf_remote rnb;
+       unsigned long nr_local;
+       int rc = 0;
 
        if (end <= start)
                RETURN(-EINVAL);
@@ -2129,7 +2209,7 @@ static int ofd_ladvise_prefetch(const struct lu_env *env,
        if (end > info->fti_attr.la_size)
                end = info->fti_attr.la_size;
 
-       if (end == 0)
+       if (end <= start)
                GOTO(out_unlock, rc);
 
        /* We need page aligned offset and length */
@@ -2141,7 +2221,8 @@ static int ofd_ladvise_prefetch(const struct lu_env *env,
                        PTLRPC_MAX_BRW_PAGES;
                rnb.rnb_offset = start_index << PAGE_SHIFT;
                rnb.rnb_len = nr_local << PAGE_SHIFT;
-               rc = dt_bufs_get(env, ofd_object_child(fo), &rnb, lnb, 0);
+               rc = dt_bufs_get(env, ofd_object_child(fo), &rnb, lnb,
+                                PTLRPC_MAX_BRW_PAGES, dbt);
                if (unlikely(rc < 0))
                        break;
                nr_local = rc;
@@ -2179,7 +2260,7 @@ static int ofd_ladvise_hdl(struct tgt_session_info *tsi)
        struct ptlrpc_thread *svc_thread = req->rq_svc_thread;
        const struct lu_env *env = svc_thread->t_env;
        struct tgt_thread_big_cache *tbc = svc_thread->t_data;
-       int rc = 0;
+       enum dt_bufs_type dbt = DT_BUFS_TYPE_READAHEAD;
        struct lu_ladvise *ladvise;
        int num_advise;
        struct ladvise_hdr *ladvise_hdr;
@@ -2190,6 +2271,7 @@ static int ofd_ladvise_hdl(struct tgt_session_info *tsi)
        struct dt_object *dob;
        __u64 start;
        __u64 end;
+       int rc = 0;
        ENTRY;
 
        CFS_FAIL_TIMEOUT(OBD_FAIL_OST_LADVISE_PAUSE, cfs_fail_val);
@@ -2238,6 +2320,9 @@ static int ofd_ladvise_hdl(struct tgt_session_info *tsi)
        LASSERT(fo != NULL);
        dob = ofd_object_child(fo);
 
+       if (ptlrpc_connection_is_local(exp->exp_connection))
+               dbt |= DT_BUFS_TYPE_LOCAL;
+
        for (i = 0; i < num_advise; i++, ladvise++) {
                start = ladvise->lla_start;
                end = ladvise->lla_end;
@@ -2257,7 +2342,7 @@ static int ofd_ladvise_hdl(struct tgt_session_info *tsi)
 
                        ioo.ioo_oid = body->oa.o_oi;
                        ioo.ioo_bufcnt = 1;
-                       rc = tgt_extent_lock(exp->exp_obd->obd_namespace,
+                       rc = tgt_extent_lock(env, exp->exp_obd->obd_namespace,
                                             &tsi->tsi_resid, start, end - 1,
                                             &lockh, LCK_PR, &flags);
                        if (rc != 0)
@@ -2265,8 +2350,8 @@ static int ofd_ladvise_hdl(struct tgt_session_info *tsi)
 
                        req->rq_status = ofd_ladvise_prefetch(env, fo,
                                                              tbc->local,
-                                                             start, end);
-                       tgt_extent_unlock(&lockh, LCK_PR);
+                                                             start, end, dbt);
+                       tgt_data_unlock(&lockh, LCK_PR);
                        break;
                case LU_LADVISE_DONTNEED:
                        rc = dt_ladvise(env, dob, ladvise->lla_start,
@@ -2297,6 +2382,7 @@ static int ofd_quotactl(struct tgt_session_info *tsi)
 {
        struct obd_quotactl *oqctl, *repoqc;
        struct lu_nodemap *nodemap;
+       ktime_t kstart = ktime_get();
        int id;
        int rc;
 
@@ -2325,6 +2411,10 @@ static int ofd_quotactl(struct tgt_session_info *tsi)
                id = nodemap_map_id(nodemap, NODEMAP_GID,
                                    NODEMAP_CLIENT_TO_FS,
                                    repoqc->qc_id);
+       else if (oqctl->qc_type == PRJQUOTA)
+               id = nodemap_map_id(nodemap, NODEMAP_PROJID,
+                                   NODEMAP_CLIENT_TO_FS,
+                                   repoqc->qc_id);
 
        nodemap_putref(nodemap);
 
@@ -2334,7 +2424,7 @@ static int ofd_quotactl(struct tgt_session_info *tsi)
        rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, repoqc);
 
        ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_QUOTACTL,
-                        tsi->tsi_jobid, 1);
+                        tsi->tsi_jobid, ktime_us_delta(ktime_get(), kstart));
 
        if (repoqc->qc_id != id)
                swap(repoqc->qc_id, id);
@@ -2343,29 +2433,6 @@ static int ofd_quotactl(struct tgt_session_info *tsi)
 }
 
 /**
- * Calculate the amount of time for lock prolongation.
- *
- * This is helper for ofd_prolong_extent_locks() function to get
- * the timeout extra time.
- *
- * \param[in] req      current request
- *
- * \retval             amount of time to extend the timeout with
- */
-static inline int prolong_timeout(struct ptlrpc_request *req)
-{
-       struct ptlrpc_service_part *svcpt = req->rq_rqbd->rqbd_svcpt;
-       time_t req_timeout;
-
-       if (AT_OFF)
-               return obd_timeout / 2;
-
-       req_timeout = req->rq_deadline - req->rq_arrival_time.tv_sec;
-       return max_t(time_t, at_est2timeout(at_get(&svcpt->scp_at_estimate)),
-                    req_timeout);
-}
-
-/**
  * Prolong lock timeout for the given extent.
  *
  * This function finds all locks related with incoming request and
@@ -2418,10 +2485,14 @@ static void ofd_prolong_extent_locks(struct tgt_session_info *tsi,
                                LASSERT(lock->l_export == data->lpa_export);
                                ldlm_lock_prolong_one(lock, data);
                                LDLM_LOCK_PUT(lock);
-                               RETURN_EXIT;
+                               if (data->lpa_locks_cnt > 0)
+                                       RETURN_EXIT;
+                               /* The lock was destroyed probably lets try
+                                * resource tree. */
+                       } else {
+                               lock->l_last_used = ktime_get();
+                               LDLM_LOCK_PUT(lock);
                        }
-                       lock->l_last_used = cfs_time_current();
-                       LDLM_LOCK_PUT(lock);
                }
        }
 
@@ -2537,14 +2608,14 @@ static int ofd_rw_hpreq_check(struct ptlrpc_request *req)
        rnb += ioo->ioo_bufcnt - 1;
        pa.lpa_extent.end = rnb->rnb_offset + rnb->rnb_len - 1;
 
-       DEBUG_REQ(D_RPCTRACE, req, "%s %s: refresh rw locks: "DFID
-                 " (%llu->%llu)\n", tgt_name(tsi->tsi_tgt),
-                 current->comm, PFID(&tsi->tsi_fid), pa.lpa_extent.start,
-                 pa.lpa_extent.end);
+       DEBUG_REQ(D_RPCTRACE, req,
+                 "%s %s: refresh rw locks for "DFID" (%llu->%llu)",
+                 tgt_name(tsi->tsi_tgt), current->comm, PFID(&tsi->tsi_fid),
+                 pa.lpa_extent.start, pa.lpa_extent.end);
 
        ofd_prolong_extent_locks(tsi, &pa);
 
-       CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
+       CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p\n",
               tgt_name(tsi->tsi_tgt), pa.lpa_blocks_cnt, req);
 
        if (pa.lpa_blocks_cnt > 0)
@@ -2769,26 +2840,27 @@ TGT_RPC_HANDLER(OST_FIRST_OPC,
                0,                      OST_SET_INFO,   ofd_set_info_hdl,
                &RQF_OBD_SET_INFO, LUSTRE_OST_VERSION),
 TGT_OST_HDL(0,                         OST_GET_INFO,   ofd_get_info_hdl),
-TGT_OST_HDL(HABEO_CORPUS| HABEO_REFERO,        OST_GETATTR,    ofd_getattr_hdl),
-TGT_OST_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR,
+TGT_OST_HDL(HAS_BODY | HAS_REPLY,      OST_GETATTR,    ofd_getattr_hdl),
+TGT_OST_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE,
                                        OST_SETATTR,    ofd_setattr_hdl),
-TGT_OST_HDL(0          | HABEO_REFERO | MUTABOR,
+TGT_OST_HDL(HAS_REPLY | IS_MUTABLE,
                                        OST_CREATE,     ofd_create_hdl),
-TGT_OST_HDL(0          | HABEO_REFERO | MUTABOR,
+TGT_OST_HDL(HAS_REPLY | IS_MUTABLE,
                                        OST_DESTROY,    ofd_destroy_hdl),
-TGT_OST_HDL(0          | HABEO_REFERO, OST_STATFS,     ofd_statfs_hdl),
-TGT_OST_HDL_HP(HABEO_CORPUS| HABEO_REFERO,
-                                       OST_BRW_READ,   tgt_brw_read,
+TGT_OST_HDL(HAS_REPLY, OST_STATFS,     ofd_statfs_hdl),
+TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY,   OST_BRW_READ,   tgt_brw_read,
                                                        ofd_hp_brw),
 /* don't set CORPUS flag for brw_write because -ENOENT may be valid case */
-TGT_OST_HDL_HP(HABEO_CORPUS| MUTABOR,  OST_BRW_WRITE,  tgt_brw_write,
+TGT_OST_HDL_HP(HAS_BODY | IS_MUTABLE,  OST_BRW_WRITE,  tgt_brw_write,
                                                        ofd_hp_brw),
-TGT_OST_HDL_HP(HABEO_CORPUS| HABEO_REFERO | MUTABOR,
+TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY | IS_MUTABLE,
                                        OST_PUNCH,      ofd_punch_hdl,
                                                        ofd_hp_punch),
-TGT_OST_HDL(HABEO_CORPUS| HABEO_REFERO,        OST_SYNC,       ofd_sync_hdl),
-TGT_OST_HDL(0          | HABEO_REFERO, OST_QUOTACTL,   ofd_quotactl),
-TGT_OST_HDL(HABEO_CORPUS | HABEO_REFERO, OST_LADVISE,  ofd_ladvise_hdl),
+TGT_OST_HDL(HAS_BODY | HAS_REPLY,      OST_SYNC,       ofd_sync_hdl),
+TGT_OST_HDL(HAS_REPLY, OST_QUOTACTL,   ofd_quotactl),
+TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_LADVISE, ofd_ladvise_hdl),
+TGT_OST_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE, OST_FALLOCATE, ofd_fallocate_hdl),
+TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SEEK, tgt_lseek),
 };
 
 static struct tgt_opc_slice ofd_common_slice[] = {
@@ -2890,10 +2962,10 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
        struct ofd_thread_info *info = NULL;
        struct obd_device *obd;
        struct tg_grants_data *tgd = &m->ofd_lut.lut_tgd;
-       struct obd_statfs *osfs;
        struct lu_fid fid;
        struct nm_config_file *nodemap_config;
        struct obd_device_target *obt;
+       u32 lmd_flags = 0;
        int rc;
 
        ENTRY;
@@ -2911,34 +2983,18 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
        obt = &obd->u.obt;
        obt->obt_magic = OBT_MAGIC;
 
-       m->ofd_fmd_max_num = OFD_FMD_MAX_NUM_DEFAULT;
-       m->ofd_fmd_max_age = OFD_FMD_MAX_AGE_DEFAULT;
-
        spin_lock_init(&m->ofd_flags_lock);
        m->ofd_raid_degraded = 0;
-       m->ofd_syncjournal = 0;
+       m->ofd_sync_journal = 0;
        ofd_slc_set(m);
-       tgd->tgd_grant_compat_disable = 0;
        m->ofd_soft_sync_limit = OFD_SOFT_SYNC_LIMIT_DEFAULT;
 
-       /* statfs data */
-       spin_lock_init(&tgd->tgd_osfs_lock);
-       tgd->tgd_osfs_age = cfs_time_shift_64(-1000);
-       tgd->tgd_osfs_unstable = 0;
-       tgd->tgd_statfs_inflight = 0;
-       tgd->tgd_osfs_inflight = 0;
-
-       /* grant data */
-       spin_lock_init(&tgd->tgd_grant_lock);
-       tgd->tgd_tot_dirty = 0;
-       tgd->tgd_tot_granted = 0;
-       tgd->tgd_tot_pending = 0;
-
        m->ofd_seq_count = 0;
-       init_waitqueue_head(&m->ofd_inconsistency_thread.t_ctl_waitq);
        INIT_LIST_HEAD(&m->ofd_inconsistency_list);
        spin_lock_init(&m->ofd_inconsistency_lock);
 
+       m->ofd_access_log_mask = -1; /* Log all accesses if enabled. */
+
        spin_lock_init(&m->ofd_batch_lock);
        init_rwsem(&m->ofd_lastid_rwsem);
 
@@ -2947,12 +3003,6 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
        /* set this lu_device to obd, because error handling need it */
        obd->obd_lu_dev = &m->ofd_dt_dev.dd_lu_dev;
 
-       rc = ofd_procfs_init(m);
-       if (rc) {
-               CERROR("Can't init ofd lprocfs, rc %d\n", rc);
-               RETURN(rc);
-       }
-
        /* No connection accepted until configurations will finish */
        spin_lock(&obd->obd_dev_lock);
        obd->obd_no_conn = 1;
@@ -2969,15 +3019,18 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
 
        info = ofd_info_init(env, NULL);
        if (info == NULL)
-               GOTO(err_fini_proc, rc = -EFAULT);
+               RETURN(-EFAULT);
 
-       rc = ofd_stack_init(env, m, cfg);
+       rc = ofd_stack_init(env, m, cfg, &lmd_flags);
        if (rc) {
-               CERROR("Can't init device stack, rc %d\n", rc);
-               GOTO(err_fini_proc, rc);
+               CERROR("%s: can't init device stack, rc %d\n",
+                      obd->obd_name, rc);
+               RETURN(rc);
        }
 
+#if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 53, 0)
        ofd_procfs_add_brw_stats_symlink(m);
+#endif
 
        snprintf(info->fti_u.name, sizeof(info->fti_u.name), "%s-%s",
                 "filter"/*LUSTRE_OST_NAME*/, obd->obd_uuid.uuid);
@@ -2985,8 +3038,13 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
                                              LDLM_NAMESPACE_SERVER,
                                              LDLM_NAMESPACE_GREEDY,
                                              LDLM_NS_TYPE_OST);
-       if (m->ofd_namespace == NULL)
-               GOTO(err_fini_stack, rc = -ENOMEM);
+       if (IS_ERR(m->ofd_namespace)) {
+               rc = PTR_ERR(m->ofd_namespace);
+               CERROR("%s: unable to create server namespace: rc = %d\n",
+                      obd->obd_name, rc);
+               m->ofd_namespace = NULL;
+               GOTO(err_fini_stack, rc);
+       }
        /* set obd_namespace for compatibility with old code */
        obd->obd_namespace = m->ofd_namespace;
        ldlm_register_intent(m->ofd_namespace, ofd_intent_policy);
@@ -2996,41 +3054,33 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
        ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
                           "filter_ldlm_cb_client", &obd->obd_ldlm_client);
 
-       dt_conf_get(env, m->ofd_osd, &m->ofd_lut.lut_dt_conf);
-
        rc = tgt_init(env, &m->ofd_lut, obd, m->ofd_osd, ofd_common_slice,
                      OBD_FAIL_OST_ALL_REQUEST_NET,
                      OBD_FAIL_OST_ALL_REPLY_NET);
        if (rc)
                GOTO(err_free_ns, rc);
 
-       /* populate cached statfs data */
-       osfs = &ofd_info(env)->fti_u.osfs;
-       rc = tgt_statfs_internal(env, &m->ofd_lut, osfs, 0, NULL);
-       if (rc != 0) {
-               CERROR("%s: can't get statfs data, rc %d\n", obd->obd_name, rc);
+       if (lmd_flags & LMD_FLG_SKIP_LFSCK)
+               m->ofd_skip_lfsck = 1;
+       if (lmd_flags & LMD_FLG_LOCAL_RECOV)
+               m->ofd_lut.lut_local_recovery = 1;
+
+       rc = ofd_tunables_init(m);
+       if (rc)
                GOTO(err_fini_lut, rc);
-       }
-       if (!is_power_of_2(osfs->os_bsize)) {
-               CERROR("%s: blocksize (%d) is not a power of 2\n",
-                       obd->obd_name, osfs->os_bsize);
-               GOTO(err_fini_lut, rc = -EPROTO);
-       }
-       tgd->tgd_blockbits = fls(osfs->os_bsize) - 1;
 
-       if (ONE_MB_BRW_SIZE < (1U << tgd->tgd_blockbits))
-               m->ofd_brw_size = 1U << tgd->tgd_blockbits;
-       else
-               m->ofd_brw_size = ONE_MB_BRW_SIZE;
+       tgd->tgd_reserved_pcnt = 0;
 
-       m->ofd_cksum_types_supported = cksum_types_supported_server();
+       m->ofd_brw_size = m->ofd_lut.lut_dt_conf.ddp_brw_size;
        m->ofd_precreate_batch = OFD_PRECREATE_BATCH_DEFAULT;
-       if (osfs->os_bsize * osfs->os_blocks < OFD_PRECREATE_SMALL_FS)
+       if (tgd->tgd_osfs.os_bsize * tgd->tgd_osfs.os_blocks <
+           OFD_PRECREATE_SMALL_FS)
                m->ofd_precreate_batch = OFD_PRECREATE_BATCH_SMALL;
+       m->ofd_atime_diff = OFD_DEF_ATIME_DIFF;
 
        rc = ofd_fs_setup(env, m, obd);
        if (rc)
-               GOTO(err_fini_lut, rc);
+               GOTO(err_fini_proc, rc);
 
        fid.f_seq = FID_SEQ_LOCAL_NAME;
        fid.f_oid = 1;
@@ -3066,6 +3116,8 @@ err_fini_los:
        m->ofd_los = NULL;
 err_fini_fs:
        ofd_fs_cleanup(env, m);
+err_fini_proc:
+       ofd_procfs_fini(m);
 err_fini_lut:
        tgt_fini(env, &m->ofd_lut);
 err_free_ns:
@@ -3073,8 +3125,6 @@ err_free_ns:
        obd->obd_namespace = m->ofd_namespace = NULL;
 err_fini_stack:
        ofd_stack_fini(env, m, &m->ofd_osd->dd_lu_dev);
-err_fini_proc:
-       ofd_procfs_fini(m);
        return rc;
 }
 
@@ -3096,6 +3146,7 @@ static void ofd_fini(const struct lu_env *env, struct ofd_device *m)
        stop.ls_status = LS_PAUSED;
        stop.ls_flags = 0;
        lfsck_stop(env, m->ofd_osd, &stop);
+       ofd_stack_pre_fini(env, m, &m->ofd_dt_dev.dd_lu_dev);
        target_recovery_fini(obd);
        if (m->ofd_namespace != NULL)
                ldlm_namespace_free_prior(m->ofd_namespace, NULL,
@@ -3104,6 +3155,7 @@ static void ofd_fini(const struct lu_env *env, struct ofd_device *m)
        obd_exports_barrier(obd);
        obd_zombie_barrier();
 
+       ofd_procfs_fini(m);
        tgt_fini(env, &m->ofd_lut);
        ofd_stop_inconsistency_verification_thread(m);
        lfsck_degister(env, m->ofd_osd);
@@ -3111,18 +3163,16 @@ static void ofd_fini(const struct lu_env *env, struct ofd_device *m)
        nm_config_file_deregister_tgt(env, obd->u.obt.obt_nodemap_config_file);
        obd->u.obt.obt_nodemap_config_file = NULL;
 
-       if (m->ofd_los != NULL) {
-               local_oid_storage_fini(env, m->ofd_los);
-               m->ofd_los = NULL;
-       }
-
        if (m->ofd_namespace != NULL) {
                ldlm_namespace_free_post(m->ofd_namespace);
                d->ld_obd->obd_namespace = m->ofd_namespace = NULL;
        }
 
+       ofd_access_log_delete(m->ofd_access_log);
+       m->ofd_access_log = NULL;
+
        ofd_stack_fini(env, m, &m->ofd_dt_dev.dd_lu_dev);
-       ofd_procfs_fini(m);
+
        LASSERT(atomic_read(&d->ld_ref) == 0);
        server_put_mount(obd->obd_name, true);
        EXIT;
@@ -3206,7 +3256,7 @@ static struct lu_device *ofd_device_alloc(const struct lu_env *env,
 /* type constructor/destructor: ofd_type_init(), ofd_type_fini() */
 LU_TYPE_INIT_FINI(ofd, &ofd_thread_key);
 
-static struct lu_device_type_operations ofd_device_type_ops = {
+static const struct lu_device_type_operations ofd_device_type_ops = {
        .ldto_init              = ofd_type_init,
        .ldto_fini              = ofd_type_fini,
 
@@ -3236,20 +3286,28 @@ static struct lu_device_type ofd_device_type = {
  */
 static int __init ofd_init(void)
 {
-       int                             rc;
+       int rc;
 
        rc = lu_kmem_init(ofd_caches);
        if (rc)
                return rc;
 
-       rc = ofd_fmd_init();
-       if (rc) {
-               lu_kmem_fini(ofd_caches);
-               return(rc);
-       }
+       rc = ofd_access_log_module_init();
+       if (rc)
+               goto out_caches;
 
-       rc = class_register_type(&ofd_obd_ops, NULL, true, NULL,
+       rc = class_register_type(&ofd_obd_ops, NULL, true,
                                 LUSTRE_OST_NAME, &ofd_device_type);
+       if (rc)
+               goto out_ofd_access_log;
+
+       return 0;
+
+out_ofd_access_log:
+       ofd_access_log_module_exit();
+out_caches:
+       lu_kmem_fini(ofd_caches);
+
        return rc;
 }
 
@@ -3261,9 +3319,9 @@ static int __init ofd_init(void)
  */
 static void __exit ofd_exit(void)
 {
-       ofd_fmd_exit();
-       lu_kmem_fini(ofd_caches);
        class_unregister_type(LUSTRE_OST_NAME);
+       ofd_access_log_module_exit();
+       lu_kmem_fini(ofd_caches);
 }
 
 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");