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LU-8130 lu_object: convert lu_object cache to rhashtable
[fs/lustre-release.git] / lustre / ofd / ofd_dev.c
index a55a234..8b2a720 100644 (file)
@@ -23,7 +23,7 @@
  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2012, 2014 Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -42,7 +42,7 @@
  * The OBD Filter Device (OFD) module belongs to the Object Storage
  * Server stack and connects the RPC oriented Unified Target (TGT)
  * layer (see lustre/include/lu_target.h) to the storage oriented OSD
- * layer (see lustre/doc/osd-api.txt).
+ * layer (see Documentation/osd-api.txt).
  *
  *     TGT
  *      |      DT and OBD APIs
 #define DEBUG_SUBSYSTEM S_FILTER
 
 #include <obd_class.h>
-#include <lustre_param.h>
+#include <obd_cksum.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,
@@ -161,12 +162,14 @@ 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;
        struct ofd_thread_info  *info = ofd_info(env);
        struct lustre_mount_info *lmi;
+       struct lustre_mount_data *lmd;
        int                      rc;
        char                    *osdname;
 
@@ -178,6 +181,15 @@ static int ofd_stack_init(const struct lu_env *env,
                RETURN(-ENODEV);
        }
 
+       lmd = s2lsi(lmi->lmi_sb)->lsi_lmd;
+       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);
        if (osdname == NULL)
@@ -230,26 +242,53 @@ 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 },
@@ -284,13 +323,7 @@ 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;
                }
        }
@@ -323,11 +356,11 @@ 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) {
@@ -361,14 +394,16 @@ 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: {
@@ -418,6 +453,14 @@ 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.
  *
@@ -439,7 +482,8 @@ 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;
 }
 
@@ -602,6 +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;
@@ -629,21 +675,26 @@ static int ofd_prepare(const struct lu_env *env, struct lu_device *pdev,
 static int ofd_recovery_complete(const struct lu_env *env,
                                 struct lu_device *dev)
 {
+       struct ofd_thread_info  *oti = ofd_info(env);
        struct ofd_device       *ofd = ofd_dev(dev);
        struct lu_device        *next = &ofd->ofd_osd->dd_lu_dev;
-       int                      rc = 0, max_precreate;
+       int                      rc = 0;
 
        ENTRY;
 
        /*
         * Grant space for object precreation on the self export.
-        * This initial reserved space (i.e. 10MB for zfs and 280KB for ldiskfs)
+        * The initial reserved space (i.e. 10MB for zfs and 280KB for ldiskfs)
         * is enough to create 10k objects. More space is then acquired for
-        * precreation in ofd_grant_create().
+        * precreation in tgt_grant_create().
         */
-       max_precreate = OST_MAX_PRECREATE * ofd->ofd_dt_conf.ddp_inodespace / 2;
-       ofd_grant_connect(env, dev->ld_obd->obd_self_export, max_precreate,
-                         false);
+       memset(&oti->fti_ocd, 0, sizeof(oti->fti_ocd));
+       oti->fti_ocd.ocd_grant = OST_MAX_PRECREATE / 2;
+       oti->fti_ocd.ocd_grant *= ofd->ofd_lut.lut_dt_conf.ddp_inodespace;
+       oti->fti_ocd.ocd_connect_flags = OBD_CONNECT_GRANT |
+                                        OBD_CONNECT_GRANT_PARAM;
+       tgt_grant_connect(env, dev->ld_obd->obd_self_export, &oti->fti_ocd,
+                         true);
        rc = next->ld_ops->ldo_recovery_complete(env, next);
        RETURN(rc);
 }
@@ -658,75 +709,7 @@ static struct lu_device_operations ofd_lu_ops = {
        .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.
  *
@@ -740,8 +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;
@@ -749,21 +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.
@@ -774,6 +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);
@@ -813,71 +807,55 @@ 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, len);
+       if (name == NULL)
+               return -ENOMEM;
+
        OBD_ALLOC_PTR(ss->ss_server_seq);
        if (ss->ss_server_seq == NULL)
-               GOTO(out_free, rc = -ENOMEM);
-
-       OBD_ALLOC(name, strlen(obd_name) + 10);
-       if (!name) {
-               OBD_FREE_PTR(ss->ss_server_seq);
-               ss->ss_server_seq = NULL;
-               GOTO(out_free, rc = -ENOMEM);
-       }
+               GOTO(out_name, rc = -ENOMEM);
 
        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);
-               GOTO(out_free, 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;
 
        OBD_ALLOC_PTR(ss->ss_client_seq);
        if (ss->ss_client_seq == NULL)
-               GOTO(out_free, rc = -ENOMEM);
+               GOTO(out_server, rc = -ENOMEM);
 
-       snprintf(name, strlen(obd_name) + 6, "%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_free, rc);
-       }
-       OBD_FREE(name, strlen(obd_name) + 10);
-       name = NULL;
+       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);
 
-out_free:
        if (rc) {
-               if (ss->ss_server_seq) {
-                       seq_server_fini(ss->ss_server_seq, env);
-                       OBD_FREE_PTR(ss->ss_server_seq);
-                       ss->ss_server_seq = NULL;
-               }
-
-               if (ss->ss_client_seq) {
-                       seq_client_fini(ss->ss_client_seq);
-                       OBD_FREE_PTR(ss->ss_client_seq);
-                       ss->ss_client_seq = NULL;
-               }
-
-               if (name) {
-                       OBD_FREE(name, strlen(obd_name) + 10);
-                       name = NULL;
-               }
+               seq_client_fini(ss->ss_client_seq);
+               OBD_FREE_PTR(ss->ss_client_seq);
+               ss->ss_client_seq = NULL;
+out_server:
+               seq_server_fini(ss->ss_server_seq, env);
+               OBD_FREE_PTR(ss->ss_server_seq);
+               ss->ss_server_seq = NULL;
        }
+out_name:
+       OBD_FREE(name, len);
 
        return rc;
 }
@@ -899,6 +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;
 
@@ -935,21 +914,19 @@ static int ofd_set_info_hdl(struct tgt_session_info *tsi)
                *repbody = *body;
 
                /** handle grant shrink, similar to a read request */
-               ofd_grant_prepare_read(tsi->tsi_env, tsi->tsi_exp,
+               tgt_grant_prepare_read(tsi->tsi_env, tsi->tsi_exp,
                                       &repbody->oa);
        } else if (KEY_IS(KEY_EVICT_BY_NID)) {
                if (vallen > 0)
                        obd_export_evict_by_nid(tsi->tsi_exp->exp_obd, val);
                rc = 0;
-       } else if (KEY_IS(KEY_SPTLRPC_CONF)) {
-               rc = tgt_adapt_sptlrpc_conf(tsi->tsi_tgt, 0);
        } else {
                CERROR("%s: Unsupported key %s\n",
                       tgt_name(tsi->tsi_tgt), (char *)key);
                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);
 }
@@ -991,48 +968,25 @@ 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_extent_unlock(&lh, LCK_PR);
 
        return 0;
 }
@@ -1055,10 +1009,10 @@ 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;
@@ -1072,8 +1026,8 @@ 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);
                }
@@ -1084,34 +1038,13 @@ 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.
@@ -1139,6 +1072,7 @@ 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;
 
@@ -1205,19 +1139,12 @@ 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);
@@ -1260,7 +1187,7 @@ 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);
 }
@@ -1285,6 +1212,7 @@ 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;
@@ -1305,7 +1233,8 @@ 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)
@@ -1321,8 +1250,7 @@ static int ofd_getattr_hdl(struct tgt_session_info *tsi)
                __u64    curr_version;
 
                obdo_from_la(&repbody->oa, &fti->fti_attr,
-                            OFD_VALID_FLAGS | LA_UID | LA_GID);
-               tgt_drop_id(tsi->tsi_exp, &repbody->oa);
+                            OFD_VALID_FLAGS | LA_UID | LA_GID | LA_PROJID);
 
                /* Store object version in reply */
                curr_version = dt_version_get(tsi->tsi_env,
@@ -1331,6 +1259,16 @@ 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);
@@ -1339,7 +1277,7 @@ out:
                tgt_extent_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;
@@ -1366,7 +1304,7 @@ 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;
@@ -1406,22 +1344,16 @@ 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);
 
        obdo_from_la(&repbody->oa, &fti->fti_attr,
-                    OFD_VALID_FLAGS | LA_UID | LA_GID);
-       tgt_drop_id(tsi->tsi_exp, &repbody->oa);
+                    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 +1458,7 @@ 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);
@@ -1559,14 +1490,20 @@ 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);
@@ -1581,14 +1518,13 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
        rep_oa = &repbody->oa;
        rep_oa->o_oi = oa->o_oi;
 
-       LASSERT(seq >= FID_SEQ_OST_MDT0);
        LASSERT(oa->o_valid & OBD_MD_FLGROUP);
 
        CDEBUG(D_INFO, "ofd_create("DOSTID")\n", POSTID(&oa->o_oi));
 
        oseq = ofd_seq_load(tsi->tsi_env, ofd, seq);
        if (IS_ERR(oseq)) {
-               CERROR("%s: Can't find FID Sequence "LPX64": rc = %ld\n",
+               CERROR("%s: Can't find FID Sequence %#llx: rc = %ld\n",
                       ofd_name(ofd), seq, PTR_ERR(oseq));
                GOTO(out_sem, rc = -EINVAL);
        }
@@ -1597,7 +1533,7 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
            (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
                if (!ofd_obd(ofd)->obd_recovering ||
                    oid > ofd_seq_last_oid(oseq)) {
-                       CERROR("%s: recreate objid "DOSTID" > last id "LPU64
+                       CERROR("%s: recreate objid "DOSTID" > last id %llu"
                               "\n", ofd_name(ofd), POSTID(&oa->o_oi),
                               ofd_seq_last_oid(oseq));
                        GOTO(out_nolock, rc = -EINVAL);
@@ -1622,18 +1558,27 @@ 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:["LPU64"] 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() = "LPU64" -> 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);
@@ -1681,7 +1626,7 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
                        if (diff < 0) {
                                /* LU-5648 */
                                CERROR("%s: invalid precreate request for "
-                                      DOSTID", last_id " LPU64 ". "
+                                      DOSTID", last_id %llu. "
                                       "Likely MDS last_id corruption\n",
                                       ofd_name(ofd), POSTID(&oa->o_oi),
                                       ofd_seq_last_oid(oseq));
@@ -1690,20 +1635,23 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
                }
        }
        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)) {
                        /* don't enforce grant during orphan recovery */
-                       rc = ofd_grant_create(tsi->tsi_env,
-                                             ofd_obd(ofd)->obd_self_export,
-                                             &diff);
-                       if (rc) {
+                       granted = tgt_grant_create(tsi->tsi_env,
+                                               ofd_obd(ofd)->obd_self_export,
+                                               &diff);
+                       if (granted < 0) {
+                               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;
                        }
@@ -1716,26 +1664,31 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
                 * LFSCK will eventually clean up any orphans. LU-14 */
                if (diff > 5 * OST_MAX_PRECREATE) {
                        diff = OST_MAX_PRECREATE / 2;
-                       LCONSOLE_WARN("%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);
+                       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 %lld 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 "LPX64
-                              " at "LPU64"\n", ofd_name(ofd),
+                       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);
@@ -1756,7 +1709,7 @@ 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)
@@ -1768,30 +1721,25 @@ static int ofd_create_hdl(struct tgt_session_info *tsi)
                               ofd_name(ofd), rc);
 
                if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
-                   !(oa->o_flags & OBD_FL_DELORPHAN))
-                       ofd_grant_commit(tsi->tsi_env,
-                                        ofd_obd(ofd)->obd_self_export, rc);
+                   !(oa->o_flags & OBD_FL_DELORPHAN)) {
+                       tgt_grant_commit(ofd_obd(ofd)->obd_self_export,
+                                        granted, rc);
+                       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:
@@ -1817,6 +1765,7 @@ 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;
@@ -1878,7 +1827,7 @@ 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);
 
@@ -1900,15 +1849,18 @@ 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);
@@ -1917,7 +1869,7 @@ 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);
 }
@@ -1940,6 +1892,7 @@ 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;
@@ -1960,7 +1913,7 @@ 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);
 
@@ -1982,6 +1935,115 @@ 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;
+       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.
+        */
+       start = oa->o_size;
+       end = oa->o_blocks;
+       mode = oa->o_falloc_mode;
+       /*
+        * Only mode == 0 (which is standard prealloc) is supported now.
+        * Punch is not supported yet.
+        */
+       if (mode & ~FALLOC_FL_KEEP_SIZE)
+               RETURN(-EOPNOTSUPP);
+
+       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));
+
+       la_from_obdo(&info->fti_attr, oa,
+                    OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME);
+
+       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_extent_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,
@@ -2000,17 +2062,19 @@ 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);
+       BUILD_BUG_ON(!(OST_CONNECT_SUPPORTED & OBD_CONNECT_TRUNCLOCK));
 
        if ((oa->o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
            (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
@@ -2039,14 +2103,14 @@ 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);
        }
 
-       CDEBUG(D_INODE, "calling punch for object "DFID", valid = "LPX64
-              ", start = "LPD64", end = "LPD64"\n", PFID(&tsi->tsi_fid),
+       CDEBUG(D_INODE, "calling punch for object "DFID", valid = %#llx"
+              ", start = %lld, end = %lld\n", PFID(&tsi->tsi_fid),
               oa->o_valid, start, end);
 
        fo = ofd_object_find_exists(tsi->tsi_env, ofd_exp(tsi->tsi_exp),
@@ -2059,18 +2123,13 @@ 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);
@@ -2086,13 +2145,201 @@ 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);
                }
        }
        return rc;
 }
 
+static int ofd_ladvise_prefetch(const struct lu_env *env,
+                               struct ofd_object *fo,
+                               struct niobuf_local *lnb,
+                               __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;
+
+       if (end <= start)
+               RETURN(-EINVAL);
+
+       ofd_read_lock(env, fo);
+       if (!ofd_object_exists(fo))
+               GOTO(out_unlock, rc = -ENOENT);
+
+       rc = ofd_attr_get(env, fo, &info->fti_attr);
+       if (rc)
+               GOTO(out_unlock, rc);
+
+       if (end > info->fti_attr.la_size)
+               end = info->fti_attr.la_size;
+
+       if (end <= start)
+               GOTO(out_unlock, rc);
+
+       /* We need page aligned offset and length */
+       start_index = start >> PAGE_SHIFT;
+       end_index = (end - 1) >> PAGE_SHIFT;
+       pages = end_index - start_index + 1;
+       while (pages > 0) {
+               nr_local = pages <= PTLRPC_MAX_BRW_PAGES ? pages :
+                       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,
+                                PTLRPC_MAX_BRW_PAGES, dbt);
+               if (unlikely(rc < 0))
+                       break;
+               nr_local = rc;
+               rc = dt_read_prep(env, ofd_object_child(fo), lnb, nr_local);
+               dt_bufs_put(env, ofd_object_child(fo), lnb, nr_local);
+               if (unlikely(rc))
+                       break;
+               start_index += nr_local;
+               pages -= nr_local;
+       }
+
+out_unlock:
+       ofd_read_unlock(env, fo);
+       RETURN(rc);
+}
+
+/**
+ * OFD request handler for OST_LADVISE RPC.
+ *
+ * Tune cache or perfetch policies according to advices.
+ *
+ * \param[in] tsi      target session environment for this request
+ *
+ * \retval             0 if successful
+ * \retval             negative errno on error
+ */
+static int ofd_ladvise_hdl(struct tgt_session_info *tsi)
+{
+       struct ptlrpc_request *req = tgt_ses_req(tsi);
+       struct obd_export *exp = tsi->tsi_exp;
+       struct ofd_device *ofd = ofd_exp(exp);
+       struct ost_body *body, *repbody;
+       struct ofd_thread_info *info;
+       struct ofd_object *fo;
+       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;
+       enum dt_bufs_type dbt = DT_BUFS_TYPE_READAHEAD;
+       struct lu_ladvise *ladvise;
+       int num_advise;
+       struct ladvise_hdr *ladvise_hdr;
+       struct obd_ioobj ioo;
+       struct lustre_handle lockh = { 0 };
+       __u64 flags = 0;
+       int i;
+       struct dt_object *dob;
+       __u64 start;
+       __u64 end;
+       int rc = 0;
+       ENTRY;
+
+       CFS_FAIL_TIMEOUT(OBD_FAIL_OST_LADVISE_PAUSE, cfs_fail_val);
+       body = tsi->tsi_ost_body;
+
+       if ((body->oa.o_valid & OBD_MD_FLID) != OBD_MD_FLID)
+               RETURN(err_serious(-EPROTO));
+
+       ladvise_hdr = req_capsule_client_get(tsi->tsi_pill,
+                                            &RMF_OST_LADVISE_HDR);
+       if (ladvise_hdr == NULL)
+               RETURN(err_serious(-EPROTO));
+
+       if (ladvise_hdr->lah_magic != LADVISE_MAGIC ||
+           ladvise_hdr->lah_count < 1)
+               RETURN(err_serious(-EPROTO));
+
+       if ((ladvise_hdr->lah_flags & (~LF_MASK)) != 0)
+               RETURN(err_serious(-EPROTO));
+
+       ladvise = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_LADVISE);
+       if (ladvise == NULL)
+               RETURN(err_serious(-EPROTO));
+
+       num_advise = req_capsule_get_size(&req->rq_pill,
+                                         &RMF_OST_LADVISE, RCL_CLIENT) /
+                                         sizeof(*ladvise);
+       if (num_advise < ladvise_hdr->lah_count)
+               RETURN(err_serious(-EPROTO));
+
+       repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
+       repbody->oa = body->oa;
+
+       info = ofd_info_init(env, exp);
+
+       rc = ostid_to_fid(&info->fti_fid, &body->oa.o_oi,
+                         ofd->ofd_lut.lut_lsd.lsd_osd_index);
+       if (rc != 0)
+               RETURN(rc);
+
+       fo = ofd_object_find(env, ofd, &info->fti_fid);
+       if (IS_ERR(fo)) {
+               rc = PTR_ERR(fo);
+               RETURN(rc);
+       }
+       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;
+               if (end <= start) {
+                       rc = err_serious(-EPROTO);
+                       break;
+               }
+
+               /* Handle different advice types */
+               switch (ladvise->lla_advice) {
+               default:
+                       rc = -ENOTSUPP;
+                       break;
+               case LU_LADVISE_WILLREAD:
+                       if (tbc == NULL)
+                               RETURN(-ENOMEM);
+
+                       ioo.ioo_oid = body->oa.o_oi;
+                       ioo.ioo_bufcnt = 1;
+                       rc = tgt_extent_lock(env, exp->exp_obd->obd_namespace,
+                                            &tsi->tsi_resid, start, end - 1,
+                                            &lockh, LCK_PR, &flags);
+                       if (rc != 0)
+                               break;
+
+                       req->rq_status = ofd_ladvise_prefetch(env, fo,
+                                                             tbc->local,
+                                                             start, end, dbt);
+                       tgt_extent_unlock(&lockh, LCK_PR);
+                       break;
+               case LU_LADVISE_DONTNEED:
+                       rc = dt_ladvise(env, dob, ladvise->lla_start,
+                                       ladvise->lla_end, LU_LADVISE_DONTNEED);
+                       break;
+               }
+               if (rc != 0)
+                       break;
+       }
+
+       ofd_object_put(env, fo);
+       req->rq_status = rc;
+       RETURN(rc);
+}
+
 /**
  * OFD request handler for OST_QUOTACTL RPC.
  *
@@ -2106,11 +2353,11 @@ out:
  */
 static int ofd_quotactl(struct tgt_session_info *tsi)
 {
-       struct obd_quotactl     *oqctl, *repoqc;
-       struct lu_nodemap       *nodemap =
-               tsi->tsi_exp->exp_target_data.ted_nodemap;
-       int                      id;
-       int                      rc;
+       struct obd_quotactl *oqctl, *repoqc;
+       struct lu_nodemap *nodemap;
+       ktime_t kstart = ktime_get();
+       int id;
+       int rc;
 
        ENTRY;
 
@@ -2124,6 +2371,10 @@ static int ofd_quotactl(struct tgt_session_info *tsi)
 
        *repoqc = *oqctl;
 
+       nodemap = nodemap_get_from_exp(tsi->tsi_exp);
+       if (IS_ERR(nodemap))
+               RETURN(PTR_ERR(nodemap));
+
        id = repoqc->qc_id;
        if (oqctl->qc_type == USRQUOTA)
                id = nodemap_map_id(nodemap, NODEMAP_UID,
@@ -2134,13 +2385,15 @@ static int ofd_quotactl(struct tgt_session_info *tsi)
                                    NODEMAP_CLIENT_TO_FS,
                                    repoqc->qc_id);
 
+       nodemap_putref(nodemap);
+
        if (repoqc->qc_id != id)
                swap(repoqc->qc_id, id);
 
        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);
@@ -2149,71 +2402,6 @@ 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 ldlm_lock *lock)
-{
-       struct ptlrpc_service_part *svcpt = req->rq_rqbd->rqbd_svcpt;
-
-       if (AT_OFF)
-               return obd_timeout / 2;
-
-       /* We are in the middle of the process - BL AST is sent, CANCEL
-         is ahead. Take half of AT + IO process time. */
-       return at_est2timeout(at_get(&svcpt->scp_at_estimate)) +
-               (ldlm_bl_timeout(lock) >> 1);
-}
-
-/**
- * Prolong single lock timeout.
- *
- * This is supplemental function to the ofd_prolong_locks(). It prolongs
- * a single lock.
- *
- * \param[in] tsi      target session environment for this request
- * \param[in] lock     LDLM lock to prolong
- * \param[in] extent   related extent
- * \param[in] timeout  timeout value to add
- *
- * \retval             0 if lock is not suitable for prolongation
- * \retval             1 if lock was prolonged successfully
- */
-static int ofd_prolong_one_lock(struct tgt_session_info *tsi,
-                               struct ldlm_lock *lock,
-                               struct ldlm_extent *extent)
-{
-       int timeout = prolong_timeout(tgt_ses_req(tsi), lock);
-
-       if (lock->l_flags & LDLM_FL_DESTROYED) /* lock already cancelled */
-               return 0;
-
-       /* XXX: never try to grab resource lock here because we're inside
-        * exp_bl_list_lock; in ldlm_lockd.c to handle waiting list we take
-        * res lock and then exp_bl_list_lock. */
-
-       if (!(lock->l_flags & LDLM_FL_AST_SENT))
-               /* ignore locks not being cancelled */
-               return 0;
-
-       LDLM_DEBUG(lock, "refreshed for req x"LPU64" ext("LPU64"->"LPU64") "
-                        "to %ds.\n", tgt_ses_req(tsi)->rq_xid, extent->start,
-                        extent->end, timeout);
-
-       /* OK. this is a possible lock the user holds doing I/O
-        * let's refresh eviction timer for it */
-       ldlm_refresh_waiting_lock(lock, timeout);
-       return 1;
-}
-
-/**
  * Prolong lock timeout for the given extent.
  *
  * This function finds all locks related with incoming request and
@@ -2233,25 +2421,26 @@ static int ofd_prolong_one_lock(struct tgt_session_info *tsi,
  * request may cover multiple locks.
  *
  * \param[in] tsi      target session environment for this request
- * \param[in] start    start of extent
- * \param[in] end      end of extent
+ * \param[in] data     struct of data to prolong locks
  *
- * \retval             number of prolonged locks
  */
-static int ofd_prolong_extent_locks(struct tgt_session_info *tsi,
-                                   __u64 start, __u64 end)
+static void ofd_prolong_extent_locks(struct tgt_session_info *tsi,
+                                   struct ldlm_prolong_args *data)
 {
-       struct obd_export       *exp = tsi->tsi_exp;
        struct obdo             *oa  = &tsi->tsi_ost_body->oa;
-       struct ldlm_extent       extent = {
-               .start = start,
-               .end = end
-       };
        struct ldlm_lock        *lock;
-       int                      lock_count = 0;
 
        ENTRY;
 
+       data->lpa_timeout = prolong_timeout(tgt_ses_req(tsi));
+       data->lpa_export = tsi->tsi_exp;
+       data->lpa_resid = tsi->tsi_resid;
+
+       CDEBUG(D_RPCTRACE, "Prolong locks for req %p with x%llu"
+              " ext(%llu->%llu)\n", tgt_ses_req(tsi),
+              tgt_ses_req(tsi)->rq_xid, data->lpa_extent.start,
+              data->lpa_extent.end);
+
        if (oa->o_valid & OBD_MD_FLHANDLE) {
                /* mostly a request should be covered by only one lock, try
                 * fast path. */
@@ -2259,42 +2448,25 @@ static int ofd_prolong_extent_locks(struct tgt_session_info *tsi,
                if (lock != NULL) {
                        /* Fast path to check if the lock covers the whole IO
                         * region exclusively. */
-                       if (lock->l_granted_mode == LCK_PW &&
-                           ldlm_extent_contain(&lock->l_policy_data.l_extent,
-                                               &extent)) {
+                       if (ldlm_extent_contain(&lock->l_policy_data.l_extent,
+                                               &data->lpa_extent)) {
                                /* bingo */
-                               LASSERT(lock->l_export == exp);
-                               lock_count = ofd_prolong_one_lock(tsi, lock,
-                                                                 &extent);
+                               LASSERT(lock->l_export == data->lpa_export);
+                               ldlm_lock_prolong_one(lock, data);
+                               LDLM_LOCK_PUT(lock);
+                               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);
-                               RETURN(lock_count);
                        }
-                       lock->l_last_used = cfs_time_current();
-                       LDLM_LOCK_PUT(lock);
                }
        }
 
-       spin_lock_bh(&exp->exp_bl_list_lock);
-       list_for_each_entry(lock, &exp->exp_bl_list, l_exp_list) {
-               LASSERT(lock->l_flags & LDLM_FL_AST_SENT);
-               LASSERT(lock->l_resource->lr_type == LDLM_EXTENT);
-
-               /* ignore waiting locks, no more granted locks in the list */
-               if (lock->l_granted_mode != lock->l_req_mode)
-                       break;
-
-               if (!ldlm_res_eq(&tsi->tsi_resid, &lock->l_resource->lr_name))
-                       continue;
-
-               if (!ldlm_extent_overlap(&lock->l_policy_data.l_extent,
-                                        &extent))
-                       continue;
-
-               lock_count += ofd_prolong_one_lock(tsi, lock, &extent);
-       }
-       spin_unlock_bh(&exp->exp_bl_list_lock);
-
-       RETURN(lock_count);
+       ldlm_resource_prolong(data);
+       EXIT;
 }
 
 /**
@@ -2341,8 +2513,10 @@ static int ofd_rw_hpreq_lock_match(struct ptlrpc_request *req,
        if (!ostid_res_name_eq(&ioo->ioo_oid, &lock->l_resource->lr_name))
                RETURN(0);
 
-       /* a bulk write can only hold a reference on a PW extent lock */
-       mode = LCK_PW;
+       /* a bulk write can only hold a reference on a PW extent lock
+        * or GROUP lock.
+        */
+       mode = LCK_PW | LCK_GROUP;
        if (opc == OST_READ)
                /* whereas a bulk read can be protected by either a PR or PW
                 * extent lock */
@@ -2358,20 +2532,22 @@ static int ofd_rw_hpreq_lock_match(struct ptlrpc_request *req,
  * Implementation of ptlrpc_hpreq_ops::hpreq_lock_check for OFD RW requests.
  *
  * Check for whether the given PTLRPC request (\a req) is blocking
- * an LDLM lock cancel.
+ * an LDLM lock cancel. Also checks whether the request is covered by an LDLM
+ * lock.
  *
  * \param[in] req      the incoming request
  *
  * \retval             1 if \a req is blocking an LDLM lock cancel
  * \retval             0 if it is not
+ * \retval             -ESTALE if lock is not found
  */
 static int ofd_rw_hpreq_check(struct ptlrpc_request *req)
 {
        struct tgt_session_info *tsi;
        struct obd_ioobj        *ioo;
        struct niobuf_remote    *rnb;
-       __u64                    start, end;
-       int                      lock_count;
+       int opc;
+       struct ldlm_prolong_args pa = { 0 };
 
        ENTRY;
 
@@ -2383,6 +2559,9 @@ static int ofd_rw_hpreq_check(struct ptlrpc_request *req)
         * Use LASSERT below because malformed RPCs should have
         * been filtered out in tgt_hpreq_handler().
         */
+       opc = lustre_msg_get_opc(req->rq_reqmsg);
+       LASSERT(opc == OST_READ || opc == OST_WRITE);
+
        ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
        LASSERT(ioo != NULL);
 
@@ -2390,21 +2569,28 @@ static int ofd_rw_hpreq_check(struct ptlrpc_request *req)
        LASSERT(rnb != NULL);
        LASSERT(!(rnb->rnb_flags & OBD_BRW_SRVLOCK));
 
-       start = rnb->rnb_offset;
+       pa.lpa_mode = LCK_PW | LCK_GROUP;
+       if (opc == OST_READ)
+               pa.lpa_mode |= LCK_PR;
+
+       pa.lpa_extent.start = rnb->rnb_offset;
        rnb += ioo->ioo_bufcnt - 1;
-       end = rnb->rnb_offset + rnb->rnb_len - 1;
+       pa.lpa_extent.end = rnb->rnb_offset + rnb->rnb_len - 1;
 
-       DEBUG_REQ(D_RPCTRACE, req, "%s %s: refresh rw locks: "DFID
-                                  " ("LPU64"->"LPU64")\n",
-                 tgt_name(tsi->tsi_tgt), current->comm,
-                 PFID(&tsi->tsi_fid), start, 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);
 
-       lock_count = ofd_prolong_extent_locks(tsi, start, end);
+       ofd_prolong_extent_locks(tsi, &pa);
 
-       CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
-              tgt_name(tsi->tsi_tgt), lock_count, req);
+       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)
+               RETURN(1);
 
-       RETURN(lock_count > 0);
+       RETURN(pa.lpa_locks_cnt > 0 ? 0 : -ESTALE);
 }
 
 /**
@@ -2438,6 +2624,10 @@ static int ofd_punch_hpreq_lock_match(struct ptlrpc_request *req,
                                      struct ldlm_lock *lock)
 {
        struct tgt_session_info *tsi;
+       struct obdo             *oa;
+       struct ldlm_extent       ext;
+
+       ENTRY;
 
        /* Don't use tgt_ses_info() to get session info, because lock_match()
         * can be called while request has no processing thread yet. */
@@ -2450,27 +2640,42 @@ static int ofd_punch_hpreq_lock_match(struct ptlrpc_request *req,
        LASSERT(tsi->tsi_ost_body != NULL);
        if (tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLHANDLE &&
            tsi->tsi_ost_body->oa.o_handle.cookie == lock->l_handle.h_cookie)
-               return 1;
+               RETURN(1);
 
-       return 0;
+       oa = &tsi->tsi_ost_body->oa;
+       ext.start = oa->o_size;
+       ext.end   = oa->o_blocks;
+
+       LASSERT(lock->l_resource != NULL);
+       if (!ostid_res_name_eq(&oa->o_oi, &lock->l_resource->lr_name))
+               RETURN(0);
+
+       if (!(lock->l_granted_mode & (LCK_PW | LCK_GROUP)))
+               RETURN(0);
+
+       RETURN(ldlm_extent_overlap(&lock->l_policy_data.l_extent, &ext));
 }
 
 /**
  * Implementation of ptlrpc_hpreq_ops::hpreq_lock_check for OST_PUNCH request.
  *
  * High-priority queue request check for whether the given punch request
- * (\a req) is blocking an LDLM lock cancel.
+ * (\a req) is blocking an LDLM lock cancel. Also checks whether the request is
+ * covered by an LDLM lock.
+ *
+
  *
  * \param[in] req      the incoming request
  *
  * \retval             1 if \a req is blocking an LDLM lock cancel
  * \retval             0 if it is not
+ * \retval             -ESTALE if lock is not found
  */
 static int ofd_punch_hpreq_check(struct ptlrpc_request *req)
 {
        struct tgt_session_info *tsi;
        struct obdo             *oa;
-       int                      lock_count;
+       struct ldlm_prolong_args pa = { 0 };
 
        ENTRY;
 
@@ -2483,17 +2688,24 @@ static int ofd_punch_hpreq_check(struct ptlrpc_request *req)
        LASSERT(!(oa->o_valid & OBD_MD_FLFLAGS &&
                  oa->o_flags & OBD_FL_SRVLOCK));
 
+       pa.lpa_mode = LCK_PW | LCK_GROUP;
+       pa.lpa_extent.start = oa->o_size;
+       pa.lpa_extent.end   = oa->o_blocks;
+
        CDEBUG(D_DLMTRACE,
-              "%s: refresh locks: "LPU64"/"LPU64" ("LPU64"->"LPU64")\n",
+              "%s: refresh locks: %llu/%llu (%llu->%llu)\n",
               tgt_name(tsi->tsi_tgt), tsi->tsi_resid.name[0],
-              tsi->tsi_resid.name[1], oa->o_size, oa->o_blocks);
+              tsi->tsi_resid.name[1], pa.lpa_extent.start, pa.lpa_extent.end);
 
-       lock_count = ofd_prolong_extent_locks(tsi, oa->o_size, oa->o_blocks);
+       ofd_prolong_extent_locks(tsi, &pa);
 
        CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
-              tgt_name(tsi->tsi_tgt), lock_count, req);
+              tgt_name(tsi->tsi_tgt), pa.lpa_blocks_cnt, req);
+
+       if (pa.lpa_blocks_cnt > 0)
+               RETURN(1);
 
-       RETURN(lock_count > 0);
+       RETURN(pa.lpa_locks_cnt > 0 ? 0 : -ESTALE);
 }
 
 /**
@@ -2544,7 +2756,9 @@ static void ofd_hp_brw(struct tgt_session_info *tsi)
                LASSERT(rnb != NULL); /* must exist after request preprocessing */
 
                /* no high priority if server lock is needed */
-               if (rnb->rnb_flags & OBD_BRW_SRVLOCK)
+               if (rnb->rnb_flags & OBD_BRW_SRVLOCK ||
+                   (lustre_msg_get_flags(tgt_ses_req(tsi)->rq_reqmsg)
+                    & MSG_REPLAY))
                        return;
        }
        tgt_ses_req(tsi)->rq_ops = &ofd_hpreq_rw;
@@ -2563,8 +2777,10 @@ static void ofd_hp_punch(struct tgt_session_info *tsi)
 {
        LASSERT(tsi->tsi_ost_body != NULL); /* must exists if we are here */
        /* no high-priority if server lock is needed */
-       if (tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
-           tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK)
+       if ((tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
+            tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK) ||
+           tgt_conn_flags(tsi) & OBD_CONNECT_MDS ||
+           lustre_msg_get_flags(tgt_ses_req(tsi)->rq_reqmsg) & MSG_REPLAY)
                return;
        tgt_ses_req(tsi)->rq_ops = &ofd_hpreq_punch;
 }
@@ -2593,25 +2809,26 @@ 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(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)
 };
 
 static struct tgt_opc_slice ofd_common_slice[] = {
@@ -2680,7 +2897,6 @@ static void ofd_key_exit(const struct lu_context *ctx,
 
        info->fti_xid = 0;
        info->fti_pre_version = 0;
-       info->fti_used = 0;
 
        memset(&info->fti_attr, 0, sizeof info->fti_attr);
 }
@@ -2710,11 +2926,15 @@ struct lu_context_key ofd_thread_key = {
 static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
                     struct lu_device_type *ldt, struct lustre_cfg *cfg)
 {
-       const char              *dev = lustre_cfg_string(cfg, 0);
-       struct ofd_thread_info  *info = NULL;
-       struct obd_device       *obd;
-       struct obd_statfs       *osfs;
-       int                      rc;
+       const char *dev = lustre_cfg_string(cfg, 0);
+       struct ofd_thread_info *info = NULL;
+       struct obd_device *obd;
+       struct tg_grants_data *tgd = &m->ofd_lut.lut_tgd;
+       struct lu_fid fid;
+       struct nm_config_file *nodemap_config;
+       struct obd_device_target *obt;
+       u32 lmd_flags = 0;
+       int rc;
 
        ENTRY;
 
@@ -2728,35 +2948,23 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
        if (rc != 0)
                RETURN(rc);
 
-       obd->u.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;
+       obt = &obd->u.obt;
+       obt->obt_magic = OBT_MAGIC;
 
        spin_lock_init(&m->ofd_flags_lock);
        m->ofd_raid_degraded = 0;
-       m->ofd_syncjournal = 0;
+       m->ofd_checksum_t10pi_enforce = 0;
+       m->ofd_sync_journal = 0;
        ofd_slc_set(m);
-       m->ofd_grant_compat_disable = 0;
        m->ofd_soft_sync_limit = OFD_SOFT_SYNC_LIMIT_DEFAULT;
 
-       /* statfs data */
-       spin_lock_init(&m->ofd_osfs_lock);
-       m->ofd_osfs_age = cfs_time_shift_64(-1000);
-       m->ofd_osfs_unstable = 0;
-       m->ofd_statfs_inflight = 0;
-       m->ofd_osfs_inflight = 0;
-
-       /* grant data */
-       spin_lock_init(&m->ofd_grant_lock);
-       m->ofd_tot_dirty = 0;
-       m->ofd_tot_granted = 0;
-       m->ofd_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);
 
@@ -2765,12 +2973,6 @@ 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;
@@ -2789,31 +2991,16 @@ static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
        if (info == NULL)
                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);
-
-       /* populate cached statfs data */
-       osfs = &ofd_info(env)->fti_u.osfs;
-       rc = ofd_statfs_internal(env, m, osfs, 0, NULL);
-       if (rc != 0) {
-               CERROR("%s: can't get statfs data, rc %d\n", obd->obd_name, rc);
-               GOTO(err_fini_stack, rc);
-       }
-       if (!IS_PO2(osfs->os_bsize)) {
-               CERROR("%s: blocksize (%d) is not a power of 2\n",
-                               obd->obd_name, osfs->os_bsize);
-               GOTO(err_fini_stack, rc = -EPROTO);
-       }
-       m->ofd_blockbits = fls(osfs->os_bsize) - 1;
-
-       m->ofd_precreate_batch = OFD_PRECREATE_BATCH_DEFAULT;
-       if (osfs->os_bsize * osfs->os_blocks < OFD_PRECREATE_SMALL_FS)
-               m->ofd_precreate_batch = OFD_PRECREATE_BATCH_SMALL;
+#endif
 
        snprintf(info->fti_u.name, sizeof(info->fti_u.name), "%s-%s",
                 "filter"/*LUSTRE_OST_NAME*/, obd->obd_uuid.uuid);
@@ -2832,36 +3019,72 @@ 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_dt_conf);
-
-       /* Allow at most ddp_grant_reserved% of the available filesystem space
-        * to be granted to clients, so that any errors in the grant overhead
-        * calculations do not allow granting more space to clients than can be
-        * written. Assumes that in aggregate the grant overhead calculations do
-        * not have more than ddp_grant_reserved% estimation error in them. */
-       m->ofd_grant_ratio =
-               ofd_grant_ratio_conv(m->ofd_dt_conf.ddp_grant_reserved);
-
        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);
 
-       rc = ofd_fs_setup(env, m, obd);
+       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);
 
-       rc = ofd_start_inconsistency_verification_thread(m);
+       tgd->tgd_reserved_pcnt = 0;
+
+       m->ofd_brw_size = m->ofd_lut.lut_dt_conf.ddp_brw_size;
+       m->ofd_cksum_types_supported =
+               obd_cksum_types_supported_server(obd->obd_name);
+       m->ofd_precreate_batch = OFD_PRECREATE_BATCH_DEFAULT;
+       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_proc, rc);
+
+       fid.f_seq = FID_SEQ_LOCAL_NAME;
+       fid.f_oid = 1;
+       fid.f_ver = 0;
+       rc = local_oid_storage_init(env, m->ofd_osd, &fid,
+                                   &m->ofd_los);
        if (rc != 0)
                GOTO(err_fini_fs, rc);
 
-       tgt_adapt_sptlrpc_conf(&m->ofd_lut, 1);
+       nodemap_config = nm_config_file_register_tgt(env, m->ofd_osd,
+                                                    m->ofd_los);
+       if (IS_ERR(nodemap_config)) {
+               rc = PTR_ERR(nodemap_config);
+               if (rc != -EROFS)
+                       GOTO(err_fini_los, rc);
+       } else {
+               obt->obt_nodemap_config_file = nodemap_config;
+       }
+
+       rc = ofd_start_inconsistency_verification_thread(m);
+       if (rc != 0)
+               GOTO(err_fini_nm, rc);
+
+       tgt_adapt_sptlrpc_conf(&m->ofd_lut);
 
        RETURN(0);
 
+err_fini_nm:
+       nm_config_file_deregister_tgt(env, obt->obt_nodemap_config_file);
+       obt->obt_nodemap_config_file = NULL;
+err_fini_los:
+       local_oid_storage_fini(env, m->ofd_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:
@@ -2869,8 +3092,6 @@ 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;
 }
 
@@ -2892,6 +3113,7 @@ 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,
@@ -2900,18 +3122,24 @@ 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);
        ofd_fs_cleanup(env, 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_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;
@@ -3025,20 +3253,28 @@ 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,
                                 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;
 }
 
@@ -3050,13 +3286,14 @@ 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("Intel Corporation. <https://www.hpdd.intel.com/>");
+MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
 MODULE_DESCRIPTION("Lustre Object Filtering Device");
+MODULE_VERSION(LUSTRE_VERSION_STRING);
 MODULE_LICENSE("GPL");
 
 module_init(ofd_init);