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LU-17705 ptlrpc: replace synchronize_rcu() with rcu_barrier()
[fs/lustre-release.git] / lustre / ofd / ofd_io.c
index bcb41db..54cfe02 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_io.c
  *
 
 #include <linux/kthread.h>
 #include "ofd_internal.h"
+#include <lustre_nodemap.h>
 
 struct ofd_inconsistency_item {
        struct list_head         oii_list;
        struct ofd_object       *oii_obj;
-       struct lu_fid            oii_pfid;
+       struct filter_fid        oii_ff;
 };
 
 /**
@@ -60,27 +60,28 @@ struct ofd_inconsistency_item {
  * \param[in] env      execution environment
  * \param[in] ofd      OFD device
  * \param[in] oii      object-related local data
- * \param[in] lr       LFSCK request data
+ * \param[in] lrl      LFSCK request data
  */
 static void ofd_inconsistency_verify_one(const struct lu_env *env,
                                         struct ofd_device *ofd,
                                         struct ofd_inconsistency_item *oii,
-                                        struct lfsck_request *lr)
+                                        struct lfsck_req_local *lrl)
 {
-       struct ofd_object       *fo     = oii->oii_obj;
-       struct lu_fid           *pfid   = &fo->ofo_pfid;
-       int                      rc;
+       struct ofd_object *fo = oii->oii_obj;
+       struct filter_fid *client_ff = &oii->oii_ff;
+       struct filter_fid *local_ff = &fo->ofo_ff;
+       int rc;
 
        LASSERT(fo->ofo_pfid_checking);
        LASSERT(!fo->ofo_pfid_verified);
 
-       lr->lr_fid = fo->ofo_header.loh_fid; /* OST-object itself FID. */
-       lr->lr_fid2 = oii->oii_pfid; /* client given PFID. */
-       lr->lr_fid3 = *pfid; /* OST local stored PFID. */
+       lrl->lrl_fid = fo->ofo_header.loh_fid; /* OST-object itself FID. */
+       lrl->lrl_ff_client = *client_ff; /* client given PFID. */
+       lrl->lrl_ff_local = *local_ff; /* OST local stored PFID. */
 
-       rc = lfsck_in_notify(env, ofd->ofd_osd, lr, NULL);
+       rc = lfsck_in_notify_local(env, ofd->ofd_osd, lrl, NULL);
        ofd_write_lock(env, fo);
-       switch (lr->lr_status) {
+       switch (lrl->lrl_status) {
        case LPVS_INIT:
                LASSERT(rc <= 0);
 
@@ -89,7 +90,8 @@ static void ofd_inconsistency_verify_one(const struct lu_env *env,
                               "PFID xattr for "DFID", the client given PFID "
                               DFID", OST local stored PFID "DFID": rc = %d\n",
                               ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
-                              PFID(&oii->oii_pfid), PFID(pfid), rc);
+                              PFID(&client_ff->ff_parent),
+                              PFID(&local_ff->ff_parent), rc);
                else
                        fo->ofo_pfid_verified = 1;
                break;
@@ -102,14 +104,16 @@ static void ofd_inconsistency_verify_one(const struct lu_env *env,
                               "PFID for "DFID", the client given PFID "DFID
                               ", local stored PFID "DFID": rc = %d\n",
                               ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
-                              PFID(&oii->oii_pfid), PFID(pfid), rc);
+                              PFID(&client_ff->ff_parent),
+                              PFID(&local_ff->ff_parent), rc);
                else
                        CDEBUG(D_LFSCK, "%s: both the client given PFID and "
                               "the OST local stored PFID are stale for the "
                               "OST-object "DFID", client given PFID is "DFID
                               ", local stored PFID is "DFID"\n",
                               ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
-                              PFID(&oii->oii_pfid), PFID(pfid));
+                              PFID(&client_ff->ff_parent),
+                              PFID(&local_ff->ff_parent));
                break;
        case LPVS_INCONSISTENT_TOFIX:
                ofd->ofd_inconsistency_self_detected++;
@@ -119,15 +123,17 @@ static void ofd_inconsistency_verify_one(const struct lu_env *env,
                               "for "DFID", with the client given PFID "DFID
                               ", the old stored PFID "DFID"\n",
                               ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
-                              PFID(&oii->oii_pfid), PFID(pfid));
+                              PFID(&client_ff->ff_parent),
+                              PFID(&local_ff->ff_parent));
                } else if (rc < 0) {
                        CDEBUG(D_LFSCK, "%s: fail to fix the OST PFID xattr "
                               "for "DFID", client given PFID "DFID", local "
                               "stored PFID "DFID": rc = %d\n",
                               ofd_name(ofd), PFID(&fo->ofo_header.loh_fid),
-                              PFID(&oii->oii_pfid), PFID(pfid), rc);
+                              PFID(&client_ff->ff_parent),
+                              PFID(&local_ff->ff_parent), rc);
                }
-               *pfid = oii->oii_pfid;
+               local_ff->ff_parent = client_ff->ff_parent;
                fo->ofo_pfid_verified = 1;
                break;
        default:
@@ -140,6 +146,17 @@ static void ofd_inconsistency_verify_one(const struct lu_env *env,
        OBD_FREE_PTR(oii);
 }
 
+struct oivm_args {
+       struct ofd_device       *od_ofd;
+       struct lu_env           od_env;
+       struct lfsck_req_local  od_lrl;
+       struct completion       *od_started;
+};
+
+#ifndef TASK_IDLE
+#define TASK_IDLE TASK_INTERRUPTIBLE
+#endif
+
 /**
  * Verification thread to check parent FID consistency.
  *
@@ -151,87 +168,64 @@ static void ofd_inconsistency_verify_one(const struct lu_env *env,
  * \retval             0 on successful thread termination
  * \retval             negative value if thread can't start
  */
-static int ofd_inconsistency_verification_main(void *args)
+static int ofd_inconsistency_verification_main(void *_args)
 {
-       struct lu_env                  env;
-       struct ofd_device             *ofd    = args;
-       struct ptlrpc_thread          *thread = &ofd->ofd_inconsistency_thread;
+       struct oivm_args *args = _args;
+       struct lu_env *env = &args->od_env;
+       struct ofd_device *ofd = args->od_ofd;
        struct ofd_inconsistency_item *oii;
-       struct lfsck_request          *lr     = NULL;
-       struct l_wait_info             lwi    = { 0 };
-       int                            rc;
+       struct lfsck_req_local *lrl = &args->od_lrl;
        ENTRY;
 
-       rc = lu_env_init(&env, LCT_DT_THREAD);
-       spin_lock(&ofd->ofd_inconsistency_lock);
-       thread_set_flags(thread, rc != 0 ? SVC_STOPPED : SVC_RUNNING);
-       wake_up_all(&thread->t_ctl_waitq);
-       spin_unlock(&ofd->ofd_inconsistency_lock);
-       if (rc != 0)
-               RETURN(rc);
-
-       OBD_ALLOC_PTR(lr);
-       if (unlikely(lr == NULL))
-               GOTO(out_unlocked, rc = -ENOMEM);
-
-       lr->lr_event = LE_PAIRS_VERIFY;
-       lr->lr_active = LFSCK_TYPE_LAYOUT;
+       lrl->lrl_event = LEL_PAIRS_VERIFY_LOCAL;
+       lrl->lrl_active = LFSCK_TYPE_LAYOUT;
+       complete(args->od_started);
 
        spin_lock(&ofd->ofd_inconsistency_lock);
-       while (1) {
-               if (unlikely(!thread_is_running(thread)))
-                       break;
+       while (({set_current_state(TASK_IDLE);
+                !kthread_should_stop(); })) {
 
                while (!list_empty(&ofd->ofd_inconsistency_list)) {
-                       oii = list_entry(ofd->ofd_inconsistency_list.next,
-                                        struct ofd_inconsistency_item,
-                                        oii_list);
+                       __set_current_state(TASK_RUNNING);
+                       oii = list_first_entry(&ofd->ofd_inconsistency_list,
+                                              struct ofd_inconsistency_item,
+                                              oii_list);
                        list_del_init(&oii->oii_list);
                        spin_unlock(&ofd->ofd_inconsistency_lock);
-                       ofd_inconsistency_verify_one(&env, ofd, oii, lr);
+                       ofd_inconsistency_verify_one(env, ofd, oii, lrl);
                        spin_lock(&ofd->ofd_inconsistency_lock);
                }
 
                spin_unlock(&ofd->ofd_inconsistency_lock);
-               l_wait_event(thread->t_ctl_waitq,
-                            !list_empty(&ofd->ofd_inconsistency_list) ||
-                            !thread_is_running(thread),
-                            &lwi);
+               schedule();
                spin_lock(&ofd->ofd_inconsistency_lock);
        }
+       __set_current_state(TASK_RUNNING);
 
        while (!list_empty(&ofd->ofd_inconsistency_list)) {
                struct ofd_object *fo;
 
-               oii = list_entry(ofd->ofd_inconsistency_list.next,
-                                struct ofd_inconsistency_item,
-                                oii_list);
+               oii = list_first_entry(&ofd->ofd_inconsistency_list,
+                                      struct ofd_inconsistency_item,
+                                      oii_list);
                list_del_init(&oii->oii_list);
                fo = oii->oii_obj;
                spin_unlock(&ofd->ofd_inconsistency_lock);
 
-               ofd_write_lock(&env, fo);
+               ofd_write_lock(env, fo);
                fo->ofo_pfid_checking = 0;
-               ofd_write_unlock(&env, fo);
+               ofd_write_unlock(env, fo);
 
-               ofd_object_put(&env, fo);
+               ofd_object_put(env, fo);
                OBD_FREE_PTR(oii);
                spin_lock(&ofd->ofd_inconsistency_lock);
        }
 
-       OBD_FREE_PTR(lr);
-
-       GOTO(out, rc = 0);
-
-out_unlocked:
-       spin_lock(&ofd->ofd_inconsistency_lock);
-out:
-       thread_set_flags(thread, SVC_STOPPED);
-       wake_up_all(&thread->t_ctl_waitq);
        spin_unlock(&ofd->ofd_inconsistency_lock);
-       lu_env_fini(&env);
 
-       return rc;
+       lu_env_fini(&args->od_env);
+       OBD_FREE_PTR(args);
+       return 0;
 }
 
 /**
@@ -246,32 +240,50 @@ out:
  */
 int ofd_start_inconsistency_verification_thread(struct ofd_device *ofd)
 {
-       struct ptlrpc_thread    *thread = &ofd->ofd_inconsistency_thread;
-       struct l_wait_info       lwi    = { 0 };
        struct task_struct      *task;
+       struct oivm_args        *args;
+       DECLARE_COMPLETION_ONSTACK(started);
        int                      rc;
 
-       spin_lock(&ofd->ofd_inconsistency_lock);
-       if (unlikely(thread_is_running(thread))) {
-               spin_unlock(&ofd->ofd_inconsistency_lock);
-
+       if (ofd->ofd_inconsistency_task)
                return -EALREADY;
+
+       OBD_ALLOC_PTR(args);
+       if (!args)
+               return -ENOMEM;
+       rc = lu_env_init(&args->od_env, LCT_DT_THREAD);
+       if (rc) {
+               OBD_FREE_PTR(args);
+               return rc;
        }
 
-       thread_set_flags(thread, 0);
-       spin_unlock(&ofd->ofd_inconsistency_lock);
-       task = kthread_run(ofd_inconsistency_verification_main, ofd,
-                          "inconsistency_verification");
+       args->od_ofd = ofd;
+       args->od_started = &started;
+       task = kthread_create(ofd_inconsistency_verification_main, args,
+                             "inconsistency_verification");
        if (IS_ERR(task)) {
                rc = PTR_ERR(task);
                CERROR("%s: cannot start self_repair thread: rc = %d\n",
                       ofd_name(ofd), rc);
        } else {
                rc = 0;
-               l_wait_event(thread->t_ctl_waitq,
-                            thread_is_running(thread) ||
-                            thread_is_stopped(thread),
-                            &lwi);
+               spin_lock(&ofd->ofd_inconsistency_lock);
+               if (ofd->ofd_inconsistency_task)
+                       rc = -EALREADY;
+               else
+                       ofd->ofd_inconsistency_task = task;
+               spin_unlock(&ofd->ofd_inconsistency_lock);
+
+               if (rc)
+                       kthread_stop(task);
+               else {
+                       wake_up_process(task);
+                       wait_for_completion(&started);
+               }
+       }
+       if (rc) {
+               lu_env_fini(&args->od_env);
+               OBD_FREE_PTR(args);
        }
 
        return rc;
@@ -287,22 +299,16 @@ int ofd_start_inconsistency_verification_thread(struct ofd_device *ofd)
  */
 int ofd_stop_inconsistency_verification_thread(struct ofd_device *ofd)
 {
-       struct ptlrpc_thread    *thread = &ofd->ofd_inconsistency_thread;
-       struct l_wait_info       lwi    = { 0 };
+       struct task_struct *task;
 
        spin_lock(&ofd->ofd_inconsistency_lock);
-       if (thread_is_init(thread) || thread_is_stopped(thread)) {
-               spin_unlock(&ofd->ofd_inconsistency_lock);
+       task = ofd->ofd_inconsistency_task;
+       ofd->ofd_inconsistency_task = NULL;
+       spin_unlock(&ofd->ofd_inconsistency_lock);
 
+       if (!task)
                return -EALREADY;
-       }
-
-       thread_set_flags(thread, SVC_STOPPING);
-       spin_unlock(&ofd->ofd_inconsistency_lock);
-       wake_up_all(&thread->t_ctl_waitq);
-       l_wait_event(thread->t_ctl_waitq,
-                    thread_is_stopped(thread),
-                    &lwi);
+       kthread_stop(task);
 
        return 0;
 }
@@ -320,9 +326,10 @@ int ofd_stop_inconsistency_verification_thread(struct ofd_device *ofd)
 static void ofd_add_inconsistency_item(const struct lu_env *env,
                                       struct ofd_object *fo, struct obdo *oa)
 {
-       struct ofd_device               *ofd    = ofd_obj2dev(fo);
-       struct ofd_inconsistency_item   *oii;
-       bool                             wakeup = false;
+       struct ofd_device *ofd = ofd_obj2dev(fo);
+       struct ofd_inconsistency_item *oii;
+       struct filter_fid *ff;
+       bool wakeup = false;
 
        OBD_ALLOC_PTR(oii);
        if (oii == NULL)
@@ -331,9 +338,11 @@ static void ofd_add_inconsistency_item(const struct lu_env *env,
        INIT_LIST_HEAD(&oii->oii_list);
        lu_object_get(&fo->ofo_obj.do_lu);
        oii->oii_obj = fo;
-       oii->oii_pfid.f_seq = oa->o_parent_seq;
-       oii->oii_pfid.f_oid = oa->o_parent_oid;
-       oii->oii_pfid.f_stripe_idx = oa->o_stripe_idx;
+       ff = &oii->oii_ff;
+       ff->ff_parent.f_seq = oa->o_parent_seq;
+       ff->ff_parent.f_oid = oa->o_parent_oid;
+       ff->ff_parent.f_stripe_idx = oa->o_stripe_idx;
+       ff->ff_layout = oa->o_layout;
 
        spin_lock(&ofd->ofd_inconsistency_lock);
        if (fo->ofo_pfid_checking || fo->ofo_pfid_verified) {
@@ -347,9 +356,9 @@ static void ofd_add_inconsistency_item(const struct lu_env *env,
        if (list_empty(&ofd->ofd_inconsistency_list))
                wakeup = true;
        list_add_tail(&oii->oii_list, &ofd->ofd_inconsistency_list);
+       if (wakeup && ofd->ofd_inconsistency_task)
+               wake_up_process(ofd->ofd_inconsistency_task);
        spin_unlock(&ofd->ofd_inconsistency_lock);
-       if (wakeup)
-               wake_up_all(&ofd->ofd_inconsistency_thread.t_ctl_waitq);
 
        /* XXX: When the found inconsistency exceeds some threshold,
         *      we can trigger the LFSCK to scan part of the system
@@ -378,8 +387,8 @@ static void ofd_add_inconsistency_item(const struct lu_env *env,
 int ofd_verify_ff(const struct lu_env *env, struct ofd_object *fo,
                  struct obdo *oa)
 {
-       struct lu_fid   *pfid   = &fo->ofo_pfid;
-       int              rc     = 0;
+       struct lu_fid *pfid = &fo->ofo_ff.ff_parent;
+       int rc = 0;
        ENTRY;
 
        if (fid_is_sane(pfid)) {
@@ -417,6 +426,145 @@ int ofd_verify_ff(const struct lu_env *env, struct ofd_object *fo,
 }
 
 /**
+ * FLR: verify the layout version of object.
+ *
+ * \param[in] env      execution environment
+ * \param[in] fo       OFD object
+ * \param[in] oa       OBDO structure with layout version
+ *
+ * \retval             0 on successful verification
+ * \retval             -EINPROGRESS layout version is in transfer
+ * \retval             -ESTALE the layout version on client is stale
+ */
+int ofd_verify_layout_version(const struct lu_env *env,
+                             struct ofd_object *fo, const struct obdo *oa)
+{
+       int rc;
+       ENTRY;
+
+       if (unlikely(CFS_FAIL_CHECK(OBD_FAIL_OST_SKIP_LV_CHECK)))
+               GOTO(out, rc = 0);
+
+       rc = ofd_object_ff_load(env, fo);
+       if (rc < 0) {
+               if (rc == -ENODATA)
+                       rc = 0;
+               GOTO(out, rc);
+       }
+
+       /**
+        * this update is not legitimate, whose layout version is older than
+        * that on the disk.
+        */
+       if (ofd_layout_version_less(oa->o_layout_version,
+                                   fo->ofo_ff.ff_layout_version))
+               GOTO(out, rc = -ESTALE);
+
+out:
+       CDEBUG(D_INODE, DFID " verify layout version: %u vs. %u/%u: rc = %d\n",
+              PFID(lu_object_fid(&fo->ofo_obj.do_lu)),
+              oa->o_layout_version, fo->ofo_ff.ff_layout_version,
+              fo->ofo_ff.ff_range, rc);
+       RETURN(rc);
+
+}
+
+/*
+ * Handle multiple attrs at once:
+ *
+ * Lazy ATIME update to refresh atime every ofd_atime_diff
+ * seconds so that external scanning tool can see it actual
+ * within that period and be able to identify accessed files
+ *
+ * Update enc flag on OST object
+ * OSD layer will find out if this is really necessary.
+ */
+static void ofd_handle_attrs(const struct lu_env *env, struct ofd_device *ofd,
+                            struct ofd_object *fo, struct obdo *oa)
+{
+       bool need_atime = (oa->o_valid & OBD_MD_FLATIME);
+       bool need_encfl = (oa->o_valid & OBD_MD_FLFLAGS &&
+                          oa->o_flags & LUSTRE_ENCRYPT_FL);
+       struct lu_attr *la;
+       struct dt_object *o;
+       struct thandle *th;
+       int rc;
+
+       if (need_atime && ofd->ofd_atime_diff == 0)
+               need_atime = false;
+
+       if (need_encfl && CFS_FAIL_CHECK(OBD_FAIL_LFSCK_NO_ENCFLAG))
+               need_encfl = false;
+
+       if (!need_atime && !need_encfl)
+               return;
+
+       la = &ofd_info(env)->fti_attr2;
+       o = ofd_object_child(fo);
+
+       if (need_atime) {
+               if (unlikely(fo->ofo_atime_ondisk == 0)) {
+                       rc = dt_attr_get(env, o, la);
+                       if (unlikely(rc)) {
+                               need_atime = false;
+                               GOTO(trans, rc);
+                       }
+                       LASSERT(la->la_valid & LA_ATIME);
+                       if (la->la_atime == 0)
+                               la->la_atime = la->la_mtime;
+                       fo->ofo_atime_ondisk = la->la_atime;
+               }
+               if (oa->o_atime - fo->ofo_atime_ondisk < ofd->ofd_atime_diff) {
+                       need_atime = false;
+                       GOTO(trans, rc = 0);
+               }
+
+               /* atime hasn't been updated too long, update it */
+               fo->ofo_atime_ondisk = oa->o_atime;
+       }
+
+trans:
+       if (!need_atime && !need_encfl)
+               return;
+
+       th = ofd_trans_create(env, ofd);
+       if (IS_ERR(th)) {
+               CERROR("%s: cannot create transaction: rc = %d\n",
+                      ofd_name(ofd), (int)PTR_ERR(th));
+               return;
+       }
+
+       la->la_valid = 0;
+       if (need_atime) {
+               la->la_valid |= LA_ATIME;
+               la->la_atime = fo->ofo_atime_ondisk;
+       }
+       if (need_encfl) {
+               la->la_valid |= LA_FLAGS;
+               la->la_flags = LUSTRE_ENCRYPT_FL;
+       }
+
+       rc = dt_declare_attr_set(env, o, la, th);
+       if (rc)
+               GOTO(out_tx, rc);
+
+       rc = dt_trans_start_local(env, ofd->ofd_osd , th);
+       if (rc) {
+               CERROR("%s: cannot start transaction: rc = %d\n",
+                      ofd_name(ofd), rc);
+               GOTO(out_tx, rc);
+       }
+
+       ofd_read_lock(env, fo);
+       if (ofd_object_exists(fo))
+               rc = dt_attr_set(env, o, la, th);
+       ofd_read_unlock(env, fo);
+
+out_tx:
+       ofd_trans_stop(env, ofd, th, rc);
+}
+
+/**
  * Prepare buffers for read request processing.
  *
  * This function converts remote buffers from client to local buffers
@@ -441,10 +589,13 @@ static int ofd_preprw_read(const struct lu_env *env, struct obd_export *exp,
                           struct ofd_device *ofd, const struct lu_fid *fid,
                           struct lu_attr *la, struct obdo *oa, int niocount,
                           struct niobuf_remote *rnb, int *nr_local,
-                          struct niobuf_local *lnb, char *jobid)
+                          struct niobuf_local *lnb)
 {
-       struct ofd_object       *fo;
-       int                      i, j, rc, tot_bytes = 0;
+       struct ofd_object *fo;
+       int i, j, rc, tot_bytes = 0;
+       enum dt_bufs_type dbt = DT_BUFS_TYPE_READ;
+       int maxlnb = *nr_local;
+       __u64 begin, end;
 
        ENTRY;
        LASSERT(env != NULL);
@@ -454,46 +605,73 @@ static int ofd_preprw_read(const struct lu_env *env, struct obd_export *exp,
                RETURN(PTR_ERR(fo));
        LASSERT(fo != NULL);
 
-       ofd_read_lock(env, fo);
+       ofd_info(env)->fti_obj = fo;
+
+       ofd_handle_attrs(env, ofd, fo, oa);
+
        if (!ofd_object_exists(fo))
-               GOTO(unlock, rc = -ENOENT);
+               GOTO(obj_put, rc = -ENOENT);
 
-       if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
-               rc = ofd_verify_ff(env, fo, oa);
-               if (rc != 0)
-                       GOTO(unlock, rc);
-       }
+       if (ptlrpc_connection_is_local(exp->exp_connection))
+               dbt |= DT_BUFS_TYPE_LOCAL;
+
+       begin = -1;
+       end = 0;
+
+       for (*nr_local = 0, i = 0, j = 0; i < niocount; i++) {
+               begin = min_t(__u64, begin, rnb[i].rnb_offset);
+               end = max_t(__u64, end, rnb[i].rnb_offset + rnb[i].rnb_len);
+
+               if (CFS_FAIL_CHECK(OBD_FAIL_OST_2BIG_NIOBUF))
+                       rnb[i].rnb_len = 100 * 1024 * 1024;
 
-       *nr_local = 0;
-       for (i = 0, j = 0; i < niocount; i++) {
                rc = dt_bufs_get(env, ofd_object_child(fo), rnb + i,
-                                lnb + j, 0);
+                                lnb + j, maxlnb, dbt);
                if (unlikely(rc < 0))
                        GOTO(buf_put, rc);
                LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
                /* correct index for local buffers to continue with */
                j += rc;
                *nr_local += rc;
+               maxlnb -= rc;
                LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
                tot_bytes += rnb[i].rnb_len;
        }
 
-       LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
-       rc = dt_attr_get(env, ofd_object_child(fo), la);
-       if (unlikely(rc))
-               GOTO(buf_put, rc);
+       ofd_read_lock(env, fo);
+       if (!ofd_object_exists(fo))
+               GOTO(unlock, rc = -ENOENT);
+
+       if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
+               rc = ofd_verify_ff(env, fo, oa);
+               if (rc != 0)
+                       GOTO(unlock, rc);
+       }
 
+       LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
        rc = dt_read_prep(env, ofd_object_child(fo), lnb, *nr_local);
        if (unlikely(rc))
-               GOTO(buf_put, rc);
+               GOTO(unlock, rc);
+       ofd_read_unlock(env, fo);
+
+       ofd_access(env, ofd,
+               &(struct lu_fid) {
+                       .f_seq = oa->o_parent_seq,
+                       .f_oid = oa->o_parent_oid,
+                       .f_ver = oa->o_stripe_idx,
+               },
+               begin, end,
+               tot_bytes,
+               niocount,
+               READ);
 
-       ofd_counter_incr(exp, LPROC_OFD_STATS_READ, jobid, tot_bytes);
        RETURN(0);
 
-buf_put:
-       dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
 unlock:
        ofd_read_unlock(env, fo);
+buf_put:
+       dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
+obj_put:
        ofd_object_put(env, fo);
        return rc;
 }
@@ -526,18 +704,21 @@ static int ofd_preprw_write(const struct lu_env *env, struct obd_export *exp,
                            struct lu_attr *la, struct obdo *oa,
                            int objcount, struct obd_ioobj *obj,
                            struct niobuf_remote *rnb, int *nr_local,
-                           struct niobuf_local *lnb, char *jobid)
+                           struct niobuf_local *lnb)
 {
-       struct ofd_object       *fo;
-       int                      i, j, k, rc = 0, tot_bytes = 0;
+       struct ofd_object *fo;
+       int i, j, k, rc = 0, tot_bytes = 0;
+       enum dt_bufs_type dbt = DT_BUFS_TYPE_WRITE;
+       int maxlnb = *nr_local;
+       __u64 begin, end;
 
        ENTRY;
        LASSERT(env != NULL);
        LASSERT(objcount == 1);
 
        if (unlikely(exp->exp_obd->obd_recovering)) {
-               u64 seq = fid_seq(fid);
-               u64 oid = fid_oid(fid);
+               u64 seq = ostid_seq(&oa->o_oi);
+               u64 oid = ostid_id(&oa->o_oi);
                struct ofd_seq *oseq;
 
                oseq = ofd_seq_load(env, ofd, seq);
@@ -555,19 +736,11 @@ static int ofd_preprw_write(const struct lu_env *env, struct obd_export *exp,
                        diff = oid - ofd_seq_last_oid(oseq);
 
                        /* Do sync create if the seq is about to used up */
-                       if (fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq)) {
-                               if (unlikely(oid >= IDIF_MAX_OID - 1))
-                                       sync = 1;
-                       } else if (fid_seq_is_norm(seq)) {
-                               if (unlikely(oid >=
-                                            LUSTRE_DATA_SEQ_MAX_WIDTH - 1))
-                                       sync = 1;
-                       } else {
-                               CERROR("%s : invalid o_seq "DOSTID"\n",
-                                      ofd_name(ofd), POSTID(&oa->o_oi));
+                       sync = ofd_seq_is_exhausted(ofd, oa);
+                       if (sync < 0) {
                                mutex_unlock(&oseq->os_create_lock);
                                ofd_seq_put(env, oseq);
-                               GOTO(out, rc = -EINVAL);
+                               GOTO(out, rc = sync);
                        }
 
                        while (diff > 0) {
@@ -575,7 +748,8 @@ static int ofd_preprw_write(const struct lu_env *env, struct obd_export *exp,
                                int count = ofd_precreate_batch(ofd, diff);
 
                                rc = ofd_precreate_objects(env, ofd, next_id,
-                                                          oseq, count, sync);
+                                                          oseq, count, sync,
+                                                          false);
                                if (rc < 0) {
                                        mutex_unlock(&oseq->os_create_lock);
                                        ofd_seq_put(env, oseq);
@@ -591,71 +765,110 @@ static int ofd_preprw_write(const struct lu_env *env, struct obd_export *exp,
                ofd_seq_put(env, oseq);
        }
 
+       /* Process incoming grant info, set OBD_BRW_GRANTED flag and grant some
+        * space back if possible, we have to do this outside of the lock as
+        * grant preparation may need to sync whole fs thus wait for all the
+        * transactions to complete. */
+       tgt_grant_prepare_write(env, exp, oa, rnb, obj->ioo_bufcnt);
+
        fo = ofd_object_find(env, ofd, fid);
        if (IS_ERR(fo))
                GOTO(out, rc = PTR_ERR(fo));
        LASSERT(fo != NULL);
 
-       ofd_read_lock(env, fo);
+       ofd_info(env)->fti_obj = fo;
+
        if (!ofd_object_exists(fo)) {
                CERROR("%s: BRW to missing obj "DOSTID"\n",
                       exp->exp_obd->obd_name, POSTID(&obj->ioo_oid));
-               ofd_read_unlock(env, fo);
                ofd_object_put(env, fo);
                GOTO(out, rc = -ENOENT);
        }
 
-       if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
-               rc = ofd_verify_ff(env, fo, oa);
-               if (rc != 0) {
-                       ofd_read_unlock(env, fo);
-                       ofd_object_put(env, fo);
-                       GOTO(out, rc);
-               }
-       }
+       if (ptlrpc_connection_is_local(exp->exp_connection))
+               dbt |= DT_BUFS_TYPE_LOCAL;
 
-       /* Process incoming grant info, set OBD_BRW_GRANTED flag and grant some
-        * space back if possible */
-       ofd_grant_prepare_write(env, exp, oa, rnb, obj->ioo_bufcnt);
+       begin = -1;
+       end = 0;
 
        /* parse remote buffers to local buffers and prepare the latter */
-       *nr_local = 0;
-       for (i = 0, j = 0; i < obj->ioo_bufcnt; i++) {
+       for (*nr_local = 0, i = 0, j = 0; i < obj->ioo_bufcnt; i++) {
+               begin = min_t(__u64, begin, rnb[i].rnb_offset);
+               end = max_t(__u64, end, rnb[i].rnb_offset + rnb[i].rnb_len);
+
+               if (CFS_FAIL_CHECK(OBD_FAIL_OST_2BIG_NIOBUF))
+                       rnb[i].rnb_len += PAGE_SIZE;
                rc = dt_bufs_get(env, ofd_object_child(fo),
-                                rnb + i, lnb + j, 1);
+                                rnb + i, lnb + j, maxlnb, dbt);
                if (unlikely(rc < 0))
-                       GOTO(err, rc);
+                       GOTO(err_nolock, rc);
                LASSERT(rc <= PTLRPC_MAX_BRW_PAGES);
                /* correct index for local buffers to continue with */
                for (k = 0; k < rc; k++) {
                        lnb[j+k].lnb_flags = rnb[i].rnb_flags;
+                       lnb[j+k].lnb_flags &= ~OBD_BRW_LOCALS;
                        if (!(rnb[i].rnb_flags & OBD_BRW_GRANTED))
                                lnb[j+k].lnb_rc = -ENOSPC;
                }
                j += rc;
                *nr_local += rc;
+               maxlnb -= rc;
                LASSERT(j <= PTLRPC_MAX_BRW_PAGES);
                tot_bytes += rnb[i].rnb_len;
        }
        LASSERT(*nr_local > 0 && *nr_local <= PTLRPC_MAX_BRW_PAGES);
 
+       ofd_read_lock(env, fo);
+       if (!ofd_object_exists(fo)) {
+               CERROR("%s: BRW to missing obj "DOSTID": rc = -ENOENT\n",
+                      exp->exp_obd->obd_name, POSTID(&obj->ioo_oid));
+               GOTO(err, rc = -ENOENT);
+       }
+
+       if (ofd->ofd_lfsck_verify_pfid && oa->o_valid & OBD_MD_FLFID) {
+               rc = ofd_verify_ff(env, fo, oa);
+               if (rc != 0)
+                       GOTO(err, rc);
+       }
+
+       /* need to verify layout version */
+       if (oa->o_valid & OBD_MD_LAYOUT_VERSION) {
+               rc = ofd_verify_layout_version(env, fo, oa);
+               if (rc)
+                       GOTO(err, rc);
+       }
+
        rc = dt_write_prep(env, ofd_object_child(fo), lnb, *nr_local);
        if (unlikely(rc != 0))
                GOTO(err, rc);
 
-       ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE, jobid, tot_bytes);
+       ofd_read_unlock(env, fo);
+
+       ofd_access(env, ofd,
+               &(struct lu_fid) {
+                       .f_seq = oa->o_parent_seq,
+                       .f_oid = oa->o_parent_oid,
+                       .f_ver = oa->o_stripe_idx,
+               },
+               begin, end,
+               tot_bytes,
+               obj->ioo_bufcnt,
+               WRITE);
+
        RETURN(0);
+
 err:
-       dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
        ofd_read_unlock(env, fo);
+err_nolock:
+       dt_bufs_put(env, ofd_object_child(fo), lnb, *nr_local);
        ofd_object_put(env, fo);
-       /* ofd_grant_prepare_write() was called, so we must commit */
-       ofd_grant_commit(exp, oa->o_grant_used, rc);
+       /* tgt_grant_prepare_write() was called, so we must commit */
+       tgt_grant_commit(exp, oa->o_grant_used, rc);
 out:
        /* let's still process incoming grant information packed in the oa,
         * but without enforcing grant since we won't proceed with the write.
         * Just like a read request actually. */
-       ofd_grant_prepare_read(env, exp, oa);
+       tgt_grant_prepare_read(env, exp, oa);
        return rc;
 }
 
@@ -686,28 +899,24 @@ int ofd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
        struct tgt_session_info *tsi = tgt_ses_info(env);
        struct ofd_device       *ofd = ofd_exp(exp);
        struct ofd_thread_info  *info;
-       char                    *jobid;
        const struct lu_fid     *fid = &oa->o_oi.oi_fid;
        int                      rc = 0;
 
        if (*nr_local > PTLRPC_MAX_BRW_PAGES) {
-               CERROR("%s: bulk has too many pages %d, which exceeds the"
-                      "maximum pages per RPC of %d\n",
+               CERROR("%s: bulk has too many pages %d, which exceeds the maximum pages per RPC of %d\n",
                       exp->exp_obd->obd_name, *nr_local, PTLRPC_MAX_BRW_PAGES);
                RETURN(-EPROTO);
        }
 
        if (tgt_ses_req(tsi) == NULL) { /* echo client case */
                info = ofd_info_init(env, exp);
-               jobid = NULL;
        } else {
                info = tsi2ofd_info(tsi);
-               jobid = tsi->tsi_jobid;
        }
 
        LASSERT(oa != NULL);
 
-       if (OBD_FAIL_CHECK(OBD_FAIL_SRV_ENOENT)) {
+       if (CFS_FAIL_CHECK(OBD_FAIL_SRV_ENOENT)) {
                struct ofd_seq          *oseq;
 
                oseq = ofd_seq_load(env, ofd, ostid_seq(&oa->o_oi));
@@ -734,13 +943,11 @@ int ofd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
        if (cmd == OBD_BRW_WRITE) {
                la_from_obdo(&info->fti_attr, oa, OBD_MD_FLGETATTR);
                rc = ofd_preprw_write(env, exp, ofd, fid, &info->fti_attr, oa,
-                                     objcount, obj, rnb, nr_local, lnb, jobid);
+                                     objcount, obj, rnb, nr_local, lnb);
        } else if (cmd == OBD_BRW_READ) {
-               ofd_grant_prepare_read(env, exp, oa);
+               tgt_grant_prepare_read(env, exp, oa);
                rc = ofd_preprw_read(env, exp, ofd, fid, &info->fti_attr, oa,
-                                    obj->ioo_bufcnt, rnb, nr_local, lnb,
-                                    jobid);
-               obdo_from_la(oa, &info->fti_attr, LA_ATIME);
+                                    obj->ioo_bufcnt, rnb, nr_local, lnb);
        } else {
                CERROR("%s: wrong cmd %d received!\n",
                       exp->exp_obd->obd_name, cmd);
@@ -775,16 +982,15 @@ ofd_commitrw_read(const struct lu_env *env, struct ofd_device *ofd,
 
        LASSERT(niocount > 0);
 
-       fo = ofd_object_find(env, ofd, fid);
-       if (IS_ERR(fo))
-               RETURN(PTR_ERR(fo));
+       fo = ofd_info(env)->fti_obj;
        LASSERT(fo != NULL);
-       LASSERT(ofd_object_exists(fo));
+       /*
+        * there is no guarantee the object still exists as the client
+        * behind this RPC could have been evicted allowing concurrent
+        * OST_DESTROY to remove the object.
+        */
        dt_bufs_put(env, ofd_object_child(fo), lnb, niocount);
 
-       ofd_read_unlock(env, fo);
-       ofd_object_put(env, fo);
-       /* second put is pair to object_get in ofd_preprw_read */
        ofd_object_put(env, fo);
 
        RETURN(0);
@@ -800,7 +1006,7 @@ ofd_commitrw_read(const struct lu_env *env, struct ofd_device *ofd,
  * \param[in] ofd      OFD device
  * \param[in] ofd_obj  OFD object
  * \param[in] la       object attributes
- * \param[in] ff       parent FID
+ * \param[in] oa       obdo
  *
  * \retval             0 on successful attributes update
  * \retval             negative value on error
@@ -808,14 +1014,16 @@ ofd_commitrw_read(const struct lu_env *env, struct ofd_device *ofd,
 static int
 ofd_write_attr_set(const struct lu_env *env, struct ofd_device *ofd,
                   struct ofd_object *ofd_obj, struct lu_attr *la,
-                  struct filter_fid *ff)
+                  struct obdo *oa)
 {
-       struct ofd_thread_info  *info = ofd_info(env);
-       __u64                    valid = la->la_valid;
-       int                      rc;
-       struct thandle          *th;
-       struct dt_object        *dt_obj;
-       int                      ff_needed = 0;
+       struct ofd_thread_info *info = ofd_info(env);
+       struct filter_fid *ff = &info->fti_mds_fid;
+       __u64 valid = la->la_valid;
+       __u32 flags = la->la_flags;
+       struct thandle *th;
+       struct dt_object *dt_obj;
+       int fl = 0;
+       int rc;
 
        ENTRY;
 
@@ -824,21 +1032,19 @@ ofd_write_attr_set(const struct lu_env *env, struct ofd_device *ofd,
        dt_obj = ofd_object_child(ofd_obj);
        LASSERT(dt_obj != NULL);
 
-       la->la_valid &= LA_UID | LA_GID;
+       la->la_valid &= LA_UID | LA_GID | LA_PROJID;
+       if (oa->o_valid & OBD_MD_FLFLAGS && oa->o_flags & LUSTRE_ENCRYPT_FL &&
+           !CFS_FAIL_CHECK(OBD_FAIL_LFSCK_NO_ENCFLAG)) {
+               la->la_valid |= LA_FLAGS;
+               la->la_flags = LUSTRE_ENCRYPT_FL;
+       }
 
-       rc = ofd_attr_handle_ugid(env, ofd_obj, la, 0 /* !is_setattr */);
+       rc = ofd_attr_handle_id(env, ofd_obj, la, 0 /* !is_setattr */);
        if (rc != 0)
                GOTO(out, rc);
 
-       if (ff != NULL) {
-               rc = ofd_object_ff_load(env, ofd_obj);
-               if (rc == -ENODATA)
-                       ff_needed = 1;
-               else if (rc < 0)
-                       GOTO(out, rc);
-       }
-
-       if (!la->la_valid && !ff_needed)
+       if (!la->la_valid && !(oa->o_valid &
+           (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT | OBD_MD_LAYOUT_VERSION)))
                /* no attributes to set */
                GOTO(out, rc = 0);
 
@@ -852,59 +1058,71 @@ ofd_write_attr_set(const struct lu_env *env, struct ofd_device *ofd,
                        GOTO(out_tx, rc);
        }
 
-       if (ff_needed) {
-               if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR1))
-                       ff->ff_parent.f_oid = cpu_to_le32(1UL << 31);
-               if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR2))
-                       ff->ff_parent.f_oid =
-                       cpu_to_le32(le32_to_cpu(ff->ff_parent.f_oid) - 1);
-
-               info->fti_buf.lb_buf = ff;
-               info->fti_buf.lb_len = sizeof(*ff);
+       if (oa->o_valid & (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT |
+                          OBD_MD_LAYOUT_VERSION)) {
                rc = dt_declare_xattr_set(env, dt_obj, &info->fti_buf,
                                          XATTR_NAME_FID, 0, th);
                if (rc)
                        GOTO(out_tx, rc);
        }
-
        /* We don't need a transno for this operation which will be re-executed
         * anyway when the OST_WRITE (with a transno assigned) is replayed */
        rc = dt_trans_start_local(env, ofd->ofd_osd , th);
        if (rc)
                GOTO(out_tx, rc);
 
-       /* set uid/gid */
+       ofd_read_lock(env, ofd_obj);
+
+       rc = ofd_attr_handle_id(env, ofd_obj, la, 0 /* !is_setattr */);
+       if (rc != 0)
+               GOTO(out_unlock, rc);
+
+       if (!la->la_valid && !(oa->o_valid &
+           (OBD_MD_FLFID | OBD_MD_FLOSTLAYOUT | OBD_MD_LAYOUT_VERSION)))
+               /* no attributes to set */
+               GOTO(out_unlock, rc = 0);
+
+
+
+       /* set uid/gid/projid */
        if (la->la_valid) {
                rc = dt_attr_set(env, dt_obj, la, th);
                if (rc)
-                       GOTO(out_tx, rc);
-       }
-
-       /* set filter fid EA */
-       if (ff_needed) {
-               if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NOPFID))
-                       GOTO(out_tx, rc);
-
-               rc = dt_xattr_set(env, dt_obj, &info->fti_buf, XATTR_NAME_FID,
-                                 0, th);
-               if (rc == 0) {
-                       ofd_obj->ofo_pfid.f_seq = le64_to_cpu(ff->ff_parent.f_seq);
-                       ofd_obj->ofo_pfid.f_oid = le32_to_cpu(ff->ff_parent.f_oid);
-                       /* Currently, the filter_fid::ff_parent::f_ver is not
-                        * the real parent MDT-object's FID::f_ver, instead it
-                        * is the OST-object index in its parent MDT-object's
-                        * layout EA. */
-                       ofd_obj->ofo_pfid.f_stripe_idx =
-                                       le32_to_cpu(ff->ff_parent.f_stripe_idx);
-               }
+                       GOTO(out_unlock, rc);
        }
 
-       GOTO(out_tx, rc);
-
+       fl = ofd_object_ff_update(env, ofd_obj, oa, ff);
+       if (fl <= 0)
+               GOTO(out_unlock, rc = fl);
+
+       /* set filter fid EA.
+        * FIXME: it holds read lock of ofd object to modify the XATTR_NAME_FID
+        * while the write lock should be held. However, it should work because
+        * write RPCs only modify ff_{parent,layout} and those information will
+        * be the same from all the write RPCs. The reason that fl is not used
+        * in dt_xattr_set() is to allow this race. */
+       if (CFS_FAIL_CHECK(OBD_FAIL_LFSCK_NOPFID))
+               GOTO(out_unlock, rc);
+       if (CFS_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR1))
+               ff->ff_parent.f_oid = cpu_to_le32(1UL << 31);
+       else if (CFS_FAIL_CHECK(OBD_FAIL_LFSCK_UNMATCHED_PAIR2))
+               le32_add_cpu(&ff->ff_parent.f_oid, -1);
+
+       info->fti_buf.lb_buf = ff;
+       info->fti_buf.lb_len = sizeof(*ff);
+       rc = dt_xattr_set(env, dt_obj, &info->fti_buf, XATTR_NAME_FID, 0, th);
+       if (rc == 0)
+               filter_fid_le_to_cpu(&ofd_obj->ofo_ff, ff, sizeof(*ff));
+
+       GOTO(out_unlock, rc);
+
+out_unlock:
+       ofd_read_unlock(env, ofd_obj);
 out_tx:
        dt_trans_stop(env, ofd->ofd_osd, th);
 out:
        la->la_valid = valid;
+       la->la_flags = flags;
        return rc;
 }
 
@@ -969,7 +1187,7 @@ static int ofd_soft_sync_cb_add(struct thandle *th, struct obd_export *exp)
        dcb = &ossc->ossc_cb;
        dcb->dcb_func = ofd_cb_soft_sync;
        INIT_LIST_HEAD(&dcb->dcb_linkage);
-       strlcpy(dcb->dcb_name, "ofd_cb_soft_sync", sizeof(dcb->dcb_name));
+       strscpy(dcb->dcb_name, "ofd_cb_soft_sync", sizeof(dcb->dcb_name));
 
        rc = dt_trans_cb_add(th, dcb);
        if (rc) {
@@ -1004,10 +1222,11 @@ static int ofd_soft_sync_cb_add(struct thandle *th, struct obd_export *exp)
 static int
 ofd_commitrw_write(const struct lu_env *env, struct obd_export *exp,
                   struct ofd_device *ofd, const struct lu_fid *fid,
-                  struct lu_attr *la, struct filter_fid *ff, int objcount,
+                  struct lu_attr *la, struct obdo *oa, int objcount,
                   int niocount, struct niobuf_local *lnb,
                   unsigned long granted, int old_rc)
 {
+       struct ofd_thread_info *info = ofd_info(env);
        struct filter_export_data *fed = &exp->exp_filter_data;
        struct ofd_object *fo;
        struct dt_object *o;
@@ -1015,7 +1234,7 @@ ofd_commitrw_write(const struct lu_env *env, struct obd_export *exp,
        int rc = 0;
        int rc2 = 0;
        int retries = 0;
-       int i;
+       int i, restart = 0;
        bool soft_sync = false;
        bool cb_registered = false;
        bool fake_write = false;
@@ -1024,15 +1243,16 @@ ofd_commitrw_write(const struct lu_env *env, struct obd_export *exp,
 
        LASSERT(objcount == 1);
 
-       fo = ofd_object_find(env, ofd, fid);
+       fo = ofd_info(env)->fti_obj;
        LASSERT(fo != NULL);
-       LASSERT(ofd_object_exists(fo));
 
        o = ofd_object_child(fo);
        LASSERT(o != NULL);
 
        if (old_rc)
                GOTO(out, rc = old_rc);
+       if (!ofd_object_exists(fo))
+               GOTO(out, rc = -ENOENT);
 
        /*
         * The first write to each object must set some attributes.  It is
@@ -1040,14 +1260,14 @@ ofd_commitrw_write(const struct lu_env *env, struct obd_export *exp,
         * dt_declare_write_commit() since quota enforcement is now handled in
         * declare phases.
         */
-       rc = ofd_write_attr_set(env, ofd, fo, la, ff);
+       rc = ofd_write_attr_set(env, ofd, fo, la, oa);
        if (rc)
                GOTO(out, rc);
 
        la->la_valid &= LA_ATIME | LA_MTIME | LA_CTIME;
 
        /* do fake write, to simulate the write case for performance testing */
-       if (OBD_FAIL_CHECK(OBD_FAIL_OST_FAKE_RW)) {
+       if (CFS_FAIL_CHECK_QUIET(OBD_FAIL_OST_FAKE_RW)) {
                struct niobuf_local *last = &lnb[niocount - 1];
                __u64 file_size = last->lnb_file_offset + last->lnb_len;
                __u64 valid = la->la_valid;
@@ -1069,11 +1289,13 @@ ofd_commitrw_write(const struct lu_env *env, struct obd_export *exp,
        }
 
 retry:
+       CFS_FAIL_TIMEOUT(OBD_FAIL_OFD_COMMITRW_DELAY, cfs_fail_val);
+
        th = ofd_trans_create(env, ofd);
        if (IS_ERR(th))
                GOTO(out, rc = PTR_ERR(th));
 
-       th->th_sync |= ofd->ofd_syncjournal;
+       th->th_sync |= ofd->ofd_sync_journal;
        if (th->th_sync == 0) {
                for (i = 0; i < niocount; i++) {
                        if (!(lnb[i].lnb_flags & OBD_BRW_ASYNC)) {
@@ -1085,7 +1307,7 @@ retry:
                }
        }
 
-       if (OBD_FAIL_CHECK(OBD_FAIL_OST_DQACQ_NET))
+       if (CFS_FAIL_CHECK(OBD_FAIL_OST_DQACQ_NET))
                GOTO(out_stop, rc = -EINPROGRESS);
 
        if (likely(!fake_write)) {
@@ -1094,6 +1316,10 @@ retry:
                        GOTO(out_stop, rc);
        }
 
+       /* don't update atime on disk if it is older */
+       if (la->la_valid & LA_ATIME && la->la_atime <= fo->ofo_atime_ondisk)
+               la->la_valid &= ~LA_ATIME;
+
        if (la->la_valid) {
                /* update [mac]time if needed */
                rc = dt_declare_attr_set(env, o, la, th);
@@ -1105,21 +1331,35 @@ retry:
        if (rc)
                GOTO(out_stop, rc);
 
-       if (likely(!fake_write)) {
-               rc = dt_write_commit(env, o, lnb, niocount, th);
-               if (rc)
-                       GOTO(out_stop, rc);
-       }
+       ofd_read_lock(env, fo);
+       if (!ofd_object_exists(fo))
+               GOTO(out_unlock, rc = -ENOENT);
 
-       if (la->la_valid) {
+       /* Don't update timestamps if this write is older than a
+        * setattr which modifies the timestamps. b=10150 */
+       if (la->la_valid && tgt_fmd_check(exp, fid, info->fti_xid)) {
                rc = dt_attr_set(env, o, la, th);
                if (rc)
-                       GOTO(out_stop, rc);
+                       GOTO(out_unlock, rc);
+               if (la->la_valid & LA_ATIME)
+                       fo->ofo_atime_ondisk = la->la_atime;
+       }
+
+       if (likely(!fake_write)) {
+               CFS_FAIL_TIMEOUT_ORSET(OBD_FAIL_OST_WR_ATTR_DELAY,
+                                      CFS_FAIL_ONCE, cfs_fail_val);
+               rc = dt_write_commit(env, o, lnb, niocount, th, oa->o_size);
+               if (rc) {
+                       restart = th->th_restart_tran;
+                       GOTO(out_unlock, rc);
+               }
        }
 
        /* get attr to return */
        rc = dt_attr_get(env, o, la);
 
+out_unlock:
+       ofd_read_unlock(env, fo);
 out_stop:
        /* Force commit to make the just-deleted blocks
         * reusable. LU-456 */
@@ -1133,11 +1373,11 @@ out_stop:
        }
 
        if (rc == 0 && granted > 0) {
-               if (ofd_grant_commit_cb_add(th, exp, granted) == 0)
+               if (tgt_grant_commit_cb_add(th, exp, granted) == 0)
                        granted = 0;
        }
 
-       rc2 = ofd_trans_stop(env, ofd, th, rc);
+       rc2 = ofd_trans_stop(env, ofd, th, restart ? 0 : rc);
        if (!rc)
                rc = rc2;
        if (rc == -ENOSPC && retries++ < 3) {
@@ -1146,6 +1386,16 @@ out_stop:
                goto retry;
        }
 
+       if (restart) {
+               retries++;
+               restart = 0;
+               if (retries % 10000 == 0)
+                       CERROR("%s: restart IO write too many times: %d\n",
+                               ofd_name(ofd), retries);
+               CDEBUG(D_INODE, "retry transaction, retries:%d\n",
+                      retries);
+               goto retry;
+       }
        if (!soft_sync)
                /* reset fed_soft_sync_count upon non-SOFT_SYNC RPC */
                atomic_set(&fed->fed_soft_sync_count, 0);
@@ -1155,12 +1405,9 @@ out_stop:
 
 out:
        dt_bufs_put(env, o, lnb, niocount);
-       ofd_read_unlock(env, fo);
-       ofd_object_put(env, fo);
-       /* second put is pair to object_get in ofd_preprw_write */
        ofd_object_put(env, fo);
        if (granted > 0)
-               ofd_grant_commit(exp, granted, old_rc);
+               tgt_grant_commit(exp, granted, old_rc);
        RETURN(rc);
 }
 
@@ -1189,47 +1436,85 @@ out:
 int ofd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
                 struct obdo *oa, int objcount, struct obd_ioobj *obj,
                 struct niobuf_remote *rnb, int npages,
-                struct niobuf_local *lnb, int old_rc)
+                struct niobuf_local *lnb, int old_rc, int nob, ktime_t kstart)
 {
-       struct ofd_thread_info  *info = ofd_info(env);
-       struct ofd_mod_data     *fmd;
-       __u64                    valid;
-       struct ofd_device       *ofd = ofd_exp(exp);
-       struct filter_fid       *ff = NULL;
-       const struct lu_fid     *fid = &oa->o_oi.oi_fid;
-       int                      rc = 0;
+       struct tgt_session_info *tsi = tgt_ses_info(env);
+       struct ofd_thread_info *info = ofd_info(env);
+       struct ofd_device *ofd = ofd_exp(exp);
+       const struct lu_fid *fid = &oa->o_oi.oi_fid;
+       struct ldlm_namespace *ns = ofd->ofd_namespace;
+       struct ldlm_resource *rs = NULL;
+       char *jobid;
+       __u64 valid;
+       int rc = 0;
+       int root_squash = 0;
 
        LASSERT(npages > 0);
 
+       if (tgt_ses_req(tsi) == NULL) { /* echo client case */
+               jobid = NULL;
+       } else {
+               jobid = tsi->tsi_jobid;
+       }
+
        if (cmd == OBD_BRW_WRITE) {
-               /* Don't update timestamps if this write is older than a
-                * setattr which modifies the timestamps. b=10150 */
-
-               /* XXX when we start having persistent reservations this needs
-                * to be changed to ofd_fmd_get() to create the fmd if it
-                * doesn't already exist so we can store the reservation handle
-                * there. */
-               valid = OBD_MD_FLUID | OBD_MD_FLGID;
-               fmd = ofd_fmd_find(exp, fid);
-               if (!fmd || fmd->fmd_mactime_xid < info->fti_xid)
-                       valid |= OBD_MD_FLATIME | OBD_MD_FLMTIME |
-                                OBD_MD_FLCTIME;
-               ofd_fmd_put(exp, fmd);
-               la_from_obdo(&info->fti_attr, oa, valid);
+               struct lu_nodemap *nodemap;
+               __u32 mapped_uid, mapped_gid, mapped_projid;
+
+               /* doing this before the commit operation places the counter
+                * update almost immediately after reply to the client, which
+                * gives reasonable time stats and lets us use the actual
+                * bytes of i/o (rather than requested)
+                */
+               ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE_BYTES, jobid, nob);
+               ofd_counter_incr(exp, LPROC_OFD_STATS_WRITE, jobid,
+                                ktime_us_delta(ktime_get(), kstart));
+
+               mapped_uid = oa->o_uid;
+               mapped_gid = oa->o_gid;
+               mapped_projid = oa->o_projid;
+               nodemap = nodemap_get_from_exp(exp);
+               if (!IS_ERR(nodemap)) {
+                       mapped_uid = nodemap_map_id(nodemap, NODEMAP_UID,
+                                                   NODEMAP_FS_TO_CLIENT,
+                                                   oa->o_uid);
+                       mapped_gid = nodemap_map_id(nodemap, NODEMAP_GID,
+                                                   NODEMAP_FS_TO_CLIENT,
+                                                   oa->o_gid);
+                       mapped_projid = nodemap_map_id(nodemap, NODEMAP_PROJID,
+                                                      NODEMAP_FS_TO_CLIENT,
+                                                      oa->o_projid);
+               } else if (old_rc == 0) {
+                       old_rc = PTR_ERR(nodemap);
+               }
 
-               if (oa->o_valid & OBD_MD_FLFID) {
-                       ff = &info->fti_mds_fid;
-                       ofd_prepare_fidea(ff, oa);
+               if (!IS_ERR_OR_NULL(nodemap)) {
+                       /* do not bypass quota enforcement if squashed uid */
+                       if (unlikely(mapped_uid == nodemap->nm_squash_uid)) {
+                               int idx;
+
+                               for (idx = 0; idx < npages; idx++)
+                                       lnb[idx].lnb_flags &=
+                                               ~OBD_BRW_SYS_RESOURCE;
+                               root_squash = 1;
+                       }
+                       nodemap_putref(nodemap);
                }
 
+               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_commitrw_write(env, exp, ofd, fid, &info->fti_attr,
-                                       ff, objcount, npages, lnb,
+                                       oa, objcount, npages, lnb,
                                        oa->o_grant_used, old_rc);
                if (rc == 0)
                        obdo_from_la(oa, &info->fti_attr,
-                                    OFD_VALID_FLAGS | LA_GID | LA_UID);
+                                    OFD_VALID_FLAGS | LA_GID | LA_UID |
+                                    LA_PROJID);
                else
-                       obdo_from_la(oa, &info->fti_attr, LA_GID | LA_UID);
+                       obdo_from_la(oa, &info->fti_attr, LA_GID | LA_UID |
+                                    LA_PROJID);
 
                /* don't report overquota flag if we failed before reaching
                 * commit */
@@ -1248,27 +1533,52 @@ int ofd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
                                else
                                        oa->o_flags = OBD_FL_NO_GRPQUOTA;
                        }
+                       if (lnb[0].lnb_flags & OBD_BRW_OVER_PRJQUOTA) {
+                               if (oa->o_valid & OBD_MD_FLFLAGS)
+                                       oa->o_flags |= OBD_FL_NO_PRJQUOTA;
+                               else
+                                       oa->o_flags = OBD_FL_NO_PRJQUOTA;
+                       }
+
+                       if (lnb[0].lnb_flags & OBD_BRW_ROOT_PRJQUOTA)
+                               oa->o_flags |= OBD_FL_ROOT_PRJQUOTA;
+
+                       if (root_squash)
+                               oa->o_flags |= OBD_FL_ROOT_SQUASH;
 
                        oa->o_valid |= OBD_MD_FLFLAGS;
-                       oa->o_valid |= OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA;
+                       oa->o_valid |= OBD_MD_FLALLQUOTA;
                }
-       } else if (cmd == OBD_BRW_READ) {
-               struct ldlm_namespace *ns = ofd->ofd_namespace;
-
-               /* If oa != NULL then ofd_preprw_read updated the inode
-                * atime and we should update the lvb so that other glimpses
-                * will also get the updated value. bug 5972 */
-               if (oa && ns && ns->ns_lvbo && ns->ns_lvbo->lvbo_update) {
-                        struct ldlm_resource *rs = NULL;
 
+               /**
+                * Update LVB after writing finish for server lock, see
+                * comments in ldlm_lock_decref_internal(), If this is a
+                * local lock on a server namespace and this was the last
+                * reference, lock will be destroyed directly thus there
+                * is no chance for ldlm_request_cancel() to update lvb.
+                */
+               if (rc == 0 && (rnb[0].rnb_flags & OBD_BRW_SRVLOCK)) {
                        ost_fid_build_resid(fid, &info->fti_resid);
-                       rs = ldlm_resource_get(ns, NULL, &info->fti_resid,
+                       rs = ldlm_resource_get(ns, &info->fti_resid,
                                               LDLM_EXTENT, 0);
                        if (!IS_ERR(rs)) {
                                ldlm_res_lvbo_update(rs, NULL, 1);
                                ldlm_resource_putref(rs);
                        }
                }
+
+               /* Convert back to client IDs. LU-9671.
+                * nodemap_get_from_exp() may fail due to nodemap deactivated,
+                * server ID will be returned back to client in that case. */
+               oa->o_uid = mapped_uid;
+               oa->o_gid = mapped_gid;
+               oa->o_projid = mapped_projid;
+       } else if (cmd == OBD_BRW_READ) {
+               /* see comment on LPROC_OFD_STATS_WRITE_BYTES usage above */
+               ofd_counter_incr(exp, LPROC_OFD_STATS_READ_BYTES, jobid, nob);
+               ofd_counter_incr(exp, LPROC_OFD_STATS_READ, jobid,
+                                ktime_us_delta(ktime_get(), kstart));
+
                rc = ofd_commitrw_read(env, ofd, fid, objcount,
                                       npages, lnb);
                if (old_rc)