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LU-2139 osc: Track and limit "unstable" pages
[fs/lustre-release.git] / lustre / lov / lov_obd.c
index 135458d..0eb30ec 100644 (file)
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2013, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -41,9 +41,6 @@
  * Author: Nathan Rutman <nathan@clusterfs.com>
  */
 
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
 #define DEBUG_SUBSYSTEM S_LOV
 #ifdef __KERNEL__
 #include <libcfs/libcfs.h>
 #include <lprocfs_status.h>
 #include <lustre_param.h>
 #include <cl_object.h>
+#include <lclient.h>
 #include <lustre/ll_fiemap.h>
+#include <lustre_log.h>
+#include <lustre_fid.h>
 
 #include "lov_internal.h"
 
@@ -75,9 +75,9 @@ static void lov_getref(struct obd_device *obd)
         struct lov_obd *lov = &obd->u.lov;
 
         /* nobody gets through here until lov_putref is done */
-        cfs_mutex_down(&lov->lov_lock);
+       mutex_lock(&lov->lov_lock);
         cfs_atomic_inc(&lov->lov_refcount);
-        cfs_mutex_up(&lov->lov_lock);
+       mutex_unlock(&lov->lov_lock);
         return;
 }
 
@@ -87,7 +87,7 @@ static void lov_putref(struct obd_device *obd)
 {
         struct lov_obd *lov = &obd->u.lov;
 
-        cfs_mutex_down(&lov->lov_lock);
+       mutex_lock(&lov->lov_lock);
         /* ok to dec to 0 more than once -- ltd_exp's will be null */
         if (cfs_atomic_dec_and_test(&lov->lov_refcount) && lov->lov_death_row) {
                 CFS_LIST_HEAD(kill);
@@ -108,7 +108,7 @@ static void lov_putref(struct obd_device *obd)
                         lov->lov_tgts[i] = NULL;
                         lov->lov_death_row--;
                 }
-                cfs_mutex_up(&lov->lov_lock);
+               mutex_unlock(&lov->lov_lock);
 
                 cfs_list_for_each_entry_safe(tgt, n, &kill, ltd_kill) {
                         cfs_list_del(&tgt->ltd_kill);
@@ -116,12 +116,12 @@ static void lov_putref(struct obd_device *obd)
                         __lov_del_obd(obd, tgt);
                 }
         } else {
-                cfs_mutex_up(&lov->lov_lock);
+               mutex_unlock(&lov->lov_lock);
         }
 }
 
 static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid,
-                              int activate);
+                              enum obd_notify_event ev);
 static int lov_notify(struct obd_device *obd, struct obd_device *watched,
                       enum obd_notify_event ev, void *data);
 
@@ -131,11 +131,10 @@ int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
                     struct obd_connect_data *data)
 {
         struct lov_obd *lov = &obd->u.lov;
-        struct obd_uuid tgt_uuid;
+        struct obd_uuid *tgt_uuid;
         struct obd_device *tgt_obd;
         static struct obd_uuid lov_osc_uuid = { "LOV_OSC_UUID" };
         struct obd_import *imp;
-
 #ifdef __KERNEL__
         cfs_proc_dir_entry_t *lov_proc_dir;
 #endif
@@ -145,11 +144,11 @@ int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
         if (!lov->lov_tgts[index])
                 RETURN(-EINVAL);
 
-        tgt_uuid = lov->lov_tgts[index]->ltd_uuid;
+        tgt_uuid = &lov->lov_tgts[index]->ltd_uuid;
         tgt_obd = lov->lov_tgts[index]->ltd_obd;
 
         if (!tgt_obd->obd_set_up) {
-                CERROR("Target %s not set up\n", obd_uuid2str(&tgt_uuid));
+                CERROR("Target %s not set up\n", obd_uuid2str(tgt_uuid));
                 RETURN(-EINVAL);
         }
 
@@ -174,14 +173,14 @@ int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
         rc = obd_register_observer(tgt_obd, obd);
         if (rc) {
                 CERROR("Target %s register_observer error %d\n",
-                       obd_uuid2str(&tgt_uuid), rc);
+                       obd_uuid2str(tgt_uuid), rc);
                 RETURN(rc);
         }
 
 
         if (imp->imp_invalid) {
-                CERROR("not connecting OSC %s; administratively "
-                       "disabled\n", obd_uuid2str(&tgt_uuid));
+                CDEBUG(D_CONFIG, "not connecting OSC %s; administratively "
+                       "disabled\n", obd_uuid2str(tgt_uuid));
                 RETURN(0);
         }
 
@@ -189,44 +188,40 @@ int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
                          &lov_osc_uuid, data, NULL);
         if (rc || !lov->lov_tgts[index]->ltd_exp) {
                 CERROR("Target %s connect error %d\n",
-                       obd_uuid2str(&tgt_uuid), rc);
+                       obd_uuid2str(tgt_uuid), rc);
                 RETURN(-ENODEV);
         }
 
         lov->lov_tgts[index]->ltd_reap = 0;
 
         CDEBUG(D_CONFIG, "Connected tgt idx %d %s (%s) %sactive\n", index,
-               obd_uuid2str(&tgt_uuid), tgt_obd->obd_name, activate ? "":"in");
+               obd_uuid2str(tgt_uuid), tgt_obd->obd_name, activate ? "":"in");
 
 #ifdef __KERNEL__
         lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
         if (lov_proc_dir) {
                 struct obd_device *osc_obd = lov->lov_tgts[index]->ltd_exp->exp_obd;
                 cfs_proc_dir_entry_t *osc_symlink;
-                char name[MAX_STRING_SIZE];
 
                 LASSERT(osc_obd != NULL);
                 LASSERT(osc_obd->obd_magic == OBD_DEVICE_MAGIC);
                 LASSERT(osc_obd->obd_type->typ_name != NULL);
-                snprintf(name, MAX_STRING_SIZE, "../../../%s/%s",
-                         osc_obd->obd_type->typ_name,
-                         osc_obd->obd_name);
-                osc_symlink = lprocfs_add_symlink(osc_obd->obd_name, lov_proc_dir,
-                                                  name);
+
+                osc_symlink = lprocfs_add_symlink(osc_obd->obd_name,
+                                                  lov_proc_dir,
+                                                  "../../../%s/%s",
+                                                  osc_obd->obd_type->typ_name,
+                                                  osc_obd->obd_name);
                 if (osc_symlink == NULL) {
                         CERROR("could not register LOV target "
-                               "/proc/fs/lustre/%s/%s/target_obds/%s.",
-                               obd->obd_type->typ_name, obd->obd_name,
-                               osc_obd->obd_name);
+                                "/proc/fs/lustre/%s/%s/target_obds/%s.",
+                                obd->obd_type->typ_name, obd->obd_name,
+                                osc_obd->obd_name);
                         lprocfs_remove(&lov_proc_dir);
                 }
         }
 #endif
 
-        rc = qos_add_tgt(obd, index);
-        if (rc)
-                CERROR("qos_add_tgt failed %d\n", rc);
-
         RETURN(0);
 }
 
@@ -336,8 +331,6 @@ static int lov_disconnect_obd(struct obd_device *obd, struct lov_tgt_desc *tgt)
                 rc = 0;
         }
 
-        qos_del_tgt(obd, tgt);
-
         tgt->ltd_exp = NULL;
         RETURN(0);
 }
@@ -385,21 +378,34 @@ out:
  *  any >= 0 : is log target index
  */
 static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid,
-                              int activate)
+                              enum obd_notify_event ev)
 {
         struct lov_obd *lov = &obd->u.lov;
         struct lov_tgt_desc *tgt;
-        int index;
+        int index, activate, active;
         ENTRY;
 
-        CDEBUG(D_INFO, "Searching in lov %p for uuid %s (activate=%d)\n",
-               lov, uuid->uuid, activate);
-
-        obd_getref(obd);
-        for (index = 0; index < lov->desc.ld_tgt_count; index++) {
-                tgt = lov->lov_tgts[index];
-                if (!tgt || !tgt->ltd_exp)
-                        continue;
+        CDEBUG(D_INFO, "Searching in lov %p for uuid %s event(%d)\n",
+               lov, uuid->uuid, ev);
+
+       obd_getref(obd);
+       for (index = 0; index < lov->desc.ld_tgt_count; index++) {
+               tgt = lov->lov_tgts[index];
+               if (!tgt)
+                       continue;
+               /*
+                * LU-642, initially inactive OSC could miss the obd_connect,
+                * we make up for it here.
+                */
+               if (ev == OBD_NOTIFY_ACTIVATE && tgt->ltd_exp == NULL &&
+                   obd_uuid_equals(uuid, &tgt->ltd_uuid)) {
+                       struct obd_uuid lov_osc_uuid = {"LOV_OSC_UUID"};
+
+                       obd_connect(NULL, &tgt->ltd_exp, tgt->ltd_obd,
+                                   &lov_osc_uuid, &lov->lov_ocd, NULL);
+               }
+               if (!tgt->ltd_exp)
+                       continue;
 
                 CDEBUG(D_INFO, "lov idx %d is %s conn "LPX64"\n",
                        index, obd_uuid2str(&tgt->ltd_uuid),
@@ -411,26 +417,41 @@ static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid,
         if (index == lov->desc.ld_tgt_count)
                 GOTO(out, index = -EINVAL);
 
-        if (lov->lov_tgts[index]->ltd_active == activate) {
-                CDEBUG(D_INFO, "OSC %s already %sactive!\n", uuid->uuid,
-                       activate ? "" : "in");
-                GOTO(out, index);
-        }
+        if (ev == OBD_NOTIFY_DEACTIVATE || ev == OBD_NOTIFY_ACTIVATE) {
+                activate = (ev == OBD_NOTIFY_ACTIVATE) ? 1 : 0;
 
-        CDEBUG(D_CONFIG, "Marking OSC %s %sactive\n", obd_uuid2str(uuid),
-               activate ? "" : "in");
+                if (lov->lov_tgts[index]->ltd_activate == activate) {
+                        CDEBUG(D_INFO, "OSC %s already %sactivate!\n",
+                               uuid->uuid, activate ? "" : "de");
+                } else {
+                        lov->lov_tgts[index]->ltd_activate = activate;
+                        CDEBUG(D_CONFIG, "%sactivate OSC %s\n",
+                               activate ? "" : "de", obd_uuid2str(uuid));
+                }
 
-        lov->lov_tgts[index]->ltd_active = activate;
+        } else if (ev == OBD_NOTIFY_INACTIVE || ev == OBD_NOTIFY_ACTIVE) {
+                active = (ev == OBD_NOTIFY_ACTIVE) ? 1 : 0;
 
-        if (activate) {
-                lov->desc.ld_active_tgt_count++;
-                lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 0;
+                if (lov->lov_tgts[index]->ltd_active == active) {
+                        CDEBUG(D_INFO, "OSC %s already %sactive!\n",
+                               uuid->uuid, active ? "" : "in");
+                        GOTO(out, index);
+                } else {
+                        CDEBUG(D_CONFIG, "Marking OSC %s %sactive\n",
+                               obd_uuid2str(uuid), active ? "" : "in");
+                }
+
+                lov->lov_tgts[index]->ltd_active = active;
+                if (active) {
+                        lov->desc.ld_active_tgt_count++;
+                        lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 0;
+                } else {
+                        lov->desc.ld_active_tgt_count--;
+                        lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 1;
+                }
         } else {
-                lov->desc.ld_active_tgt_count--;
-                lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 1;
+                CERROR("Unknown event(%d) for uuid %s", ev, uuid->uuid);
         }
-        /* remove any old qos penalty */
-        lov->lov_tgts[index]->ltd_qos.ltq_penalty = 0;
 
  out:
         obd_putref(obd);
@@ -441,14 +462,23 @@ static int lov_notify(struct obd_device *obd, struct obd_device *watched,
                       enum obd_notify_event ev, void *data)
 {
         int rc = 0;
+       struct lov_obd *lov = &obd->u.lov;
         ENTRY;
 
-        if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
+       down_read(&lov->lov_notify_lock);
+       if (!lov->lov_connects) {
+               up_read(&lov->lov_notify_lock);
+               RETURN(rc);
+       }
+
+        if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE ||
+            ev == OBD_NOTIFY_ACTIVATE || ev == OBD_NOTIFY_DEACTIVATE) {
                 struct obd_uuid *uuid;
 
                 LASSERT(watched);
 
                 if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) {
+                       up_read(&lov->lov_notify_lock);
                         CERROR("unexpected notification of %s %s!\n",
                                watched->obd_type->typ_name,
                                watched->obd_name);
@@ -459,10 +489,10 @@ static int lov_notify(struct obd_device *obd, struct obd_device *watched,
                 /* Set OSC as active before notifying the observer, so the
                  * observer can use the OSC normally.
                  */
-                rc = lov_set_osc_active(obd, uuid, ev == OBD_NOTIFY_ACTIVE);
+                rc = lov_set_osc_active(obd, uuid, ev);
                 if (rc < 0) {
-                        CERROR("%sactivation of %s failed: %d\n",
-                               (ev == OBD_NOTIFY_ACTIVE) ? "" : "de",
+                       up_read(&lov->lov_notify_lock);
+                        CERROR("event(%d) of %s failed: %d\n", ev,
                                obd_uuid2str(uuid), rc);
                         RETURN(rc);
                 }
@@ -477,39 +507,41 @@ static int lov_notify(struct obd_device *obd, struct obd_device *watched,
                 /* NULL watched means all osc's in the lov (only for syncs) */
                 /* sync event should be send lov idx as data */
                 struct lov_obd *lov = &obd->u.lov;
-                struct obd_device *tgt_obd;
-                int i;
+                int i, is_sync;
+
+                data = &i;
+                is_sync = (ev == OBD_NOTIFY_SYNC) ||
+                          (ev == OBD_NOTIFY_SYNC_NONBLOCK);
+
                 obd_getref(obd);
                 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
+                        if (!lov->lov_tgts[i])
+                                continue;
+
                         /* don't send sync event if target not
                          * connected/activated */
-                        if (!lov->lov_tgts[i] ||
-                            !lov->lov_tgts[i]->ltd_active)
-                                 continue;
-
-                        if ((ev == OBD_NOTIFY_SYNC) ||
-                            (ev == OBD_NOTIFY_SYNC_NONBLOCK))
-                                data = &i;
-
-                        tgt_obd = class_exp2obd(lov->lov_tgts[i]->ltd_exp);
+                        if (is_sync &&  !lov->lov_tgts[i]->ltd_active)
+                                continue;
 
-                        rc = obd_notify_observer(obd, tgt_obd, ev, data);
+                        rc = obd_notify_observer(obd, lov->lov_tgts[i]->ltd_obd,
+                                                 ev, data);
                         if (rc) {
                                 CERROR("%s: notify %s of %s failed %d\n",
                                        obd->obd_name,
                                        obd->obd_observer->obd_name,
-                                       tgt_obd->obd_name, rc);
-                                break;
+                                       lov->lov_tgts[i]->ltd_obd->obd_name,
+                                       rc);
                         }
                 }
                 obd_putref(obd);
         }
 
+       up_read(&lov->lov_notify_lock);
         RETURN(rc);
 }
 
-int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
-                   __u32 index, int gen, int active)
+static int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
+                          __u32 index, int gen, int active)
 {
         struct lov_obd *lov = &obd->u.lov;
         struct lov_tgt_desc *tgt;
@@ -531,13 +563,13 @@ int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
         if (tgt_obd == NULL)
                 RETURN(-EINVAL);
 
-        cfs_mutex_down(&lov->lov_lock);
+       mutex_lock(&lov->lov_lock);
 
         if ((index < lov->lov_tgt_size) && (lov->lov_tgts[index] != NULL)) {
                 tgt = lov->lov_tgts[index];
                 CERROR("UUID %s already assigned at LOV target index %d\n",
                        obd_uuid2str(&tgt->ltd_uuid), index);
-                cfs_mutex_up(&lov->lov_lock);
+               mutex_unlock(&lov->lov_lock);
                 RETURN(-EEXIST);
         }
 
@@ -551,7 +583,7 @@ int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
                         newsize = newsize << 1;
                 OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize);
                 if (newtgts == NULL) {
-                        cfs_mutex_up(&lov->lov_lock);
+                       mutex_unlock(&lov->lov_lock);
                         RETURN(-ENOMEM);
                 }
 
@@ -562,13 +594,11 @@ int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
                         oldsize = lov->lov_tgt_size;
                 }
 
-                lov->lov_tgts = newtgts;
-                lov->lov_tgt_size = newsize;
-#ifdef __KERNEL__
-                smp_rmb();
-#endif
-                if (old)
-                        OBD_FREE(old, sizeof(*old) * oldsize);
+               lov->lov_tgts = newtgts;
+               lov->lov_tgt_size = newsize;
+               smp_rmb();
+               if (old)
+                       OBD_FREE(old, sizeof(*old) * oldsize);
 
                 CDEBUG(D_CONFIG, "tgts: %p size: %d\n",
                        lov->lov_tgts, lov->lov_tgt_size);
@@ -576,18 +606,17 @@ int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
 
         OBD_ALLOC_PTR(tgt);
         if (!tgt) {
-                cfs_mutex_up(&lov->lov_lock);
+               mutex_unlock(&lov->lov_lock);
                 RETURN(-ENOMEM);
         }
 
         rc = lov_ost_pool_add(&lov->lov_packed, index, lov->lov_tgt_size);
         if (rc) {
-                cfs_mutex_up(&lov->lov_lock);
+               mutex_unlock(&lov->lov_lock);
                 OBD_FREE_PTR(tgt);
                 RETURN(rc);
         }
 
-        memset(tgt, 0, sizeof(*tgt));
         tgt->ltd_uuid = *uuidp;
         tgt->ltd_obd = tgt_obd;
         /* XXX - add a sanity check on the generation number. */
@@ -598,11 +627,13 @@ int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
         if (index >= lov->desc.ld_tgt_count)
                 lov->desc.ld_tgt_count = index + 1;
 
-        cfs_mutex_up(&lov->lov_lock);
+       mutex_unlock(&lov->lov_lock);
 
         CDEBUG(D_CONFIG, "idx=%d ltd_gen=%d ld_tgt_count=%d\n",
                 index, tgt->ltd_gen, lov->desc.ld_tgt_count);
 
+        rc = obd_notify(obd, tgt_obd, OBD_NOTIFY_CREATE, &index);
+
         if (lov->lov_connects == 0) {
                 /* lov_connect hasn't been called yet. We'll do the
                    lov_connect_obd on this target when that fn first runs,
@@ -620,6 +651,15 @@ int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
         if (!tgt->ltd_exp)
                 GOTO(out, rc = 0);
 
+       if (lov->lov_cache != NULL) {
+               rc = obd_set_info_async(NULL, tgt->ltd_exp,
+                               sizeof(KEY_CACHE_SET), KEY_CACHE_SET,
+                               sizeof(struct cl_client_cache), lov->lov_cache,
+                               NULL);
+               if (rc < 0)
+                       GOTO(out, rc);
+       }
+
         rc = lov_notify(obd, tgt->ltd_exp->exp_obd,
                         active ? OBD_NOTIFY_CONNECT : OBD_NOTIFY_INACTIVE,
                         (void *)&index);
@@ -649,6 +689,8 @@ int lov_del_target(struct obd_device *obd, __u32 index,
                 RETURN(-EINVAL);
         }
 
+       /* to make sure there's no ongoing lov_notify() now */
+       down_write(&lov->lov_notify_lock);
         obd_getref(obd);
 
         if (!lov->lov_tgts[index]) {
@@ -673,6 +715,7 @@ int lov_del_target(struct obd_device *obd, __u32 index,
         /* we really delete it from obd_putref */
 out:
         obd_putref(obd);
+       up_write(&lov->lov_notify_lock);
 
         RETURN(rc);
 }
@@ -704,16 +747,18 @@ static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt)
 
 void lov_fix_desc_stripe_size(__u64 *val)
 {
-        if (*val < PTLRPC_MAX_BRW_SIZE) {
-                LCONSOLE_WARN("Increasing default stripe size to min %u\n",
-                              PTLRPC_MAX_BRW_SIZE);
-                *val = PTLRPC_MAX_BRW_SIZE;
-        } else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) {
-                *val &= ~(LOV_MIN_STRIPE_SIZE - 1);
-                LCONSOLE_WARN("Changing default stripe size to "LPU64" (a "
-                              "multiple of %u)\n",
-                              *val, LOV_MIN_STRIPE_SIZE);
-        }
+       if (*val < LOV_MIN_STRIPE_SIZE) {
+               if (*val != 0)
+                       LCONSOLE_INFO("Increasing default stripe size to "
+                                     "minimum %u\n",
+                                     LOV_DEFAULT_STRIPE_SIZE);
+               *val = LOV_DEFAULT_STRIPE_SIZE;
+       } else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) {
+               *val &= ~(LOV_MIN_STRIPE_SIZE - 1);
+               LCONSOLE_WARN("Changing default stripe size to "LPU64" (a "
+                             "multiple of %u)\n",
+                             *val, LOV_MIN_STRIPE_SIZE);
+       }
 }
 
 void lov_fix_desc_stripe_count(__u32 *val)
@@ -785,37 +830,24 @@ int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
         lov->desc = *desc;
         lov->lov_tgt_size = 0;
 
-        cfs_sema_init(&lov->lov_lock, 1);
+       mutex_init(&lov->lov_lock);
         cfs_atomic_set(&lov->lov_refcount, 0);
-        CFS_INIT_LIST_HEAD(&lov->lov_qos.lq_oss_list);
-        cfs_init_rwsem(&lov->lov_qos.lq_rw_sem);
         lov->lov_sp_me = LUSTRE_SP_CLI;
-        lov->lov_qos.lq_dirty = 1;
-        lov->lov_qos.lq_rr.lqr_dirty = 1;
-        lov->lov_qos.lq_reset = 1;
-        /* Default priority is toward free space balance */
-        lov->lov_qos.lq_prio_free = 232;
-        /* Default threshold for rr (roughly 17%) */
-        lov->lov_qos.lq_threshold_rr = 43;
-        /* Init statfs fields */
-        OBD_ALLOC_PTR(lov->lov_qos.lq_statfs_data);
-        if (NULL == lov->lov_qos.lq_statfs_data)
-                RETURN(-ENOMEM);
-        cfs_waitq_init(&lov->lov_qos.lq_statfs_waitq);
+
+       init_rwsem(&lov->lov_notify_lock);
 
         lov->lov_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS,
                                                    HASH_POOLS_MAX_BITS,
-                                                   &pool_hash_operations, CFS_HASH_REHASH);
+                                                   HASH_POOLS_BKT_BITS, 0,
+                                                   CFS_HASH_MIN_THETA,
+                                                   CFS_HASH_MAX_THETA,
+                                                   &pool_hash_operations,
+                                                   CFS_HASH_DEFAULT);
         CFS_INIT_LIST_HEAD(&lov->lov_pool_list);
         lov->lov_pool_count = 0;
         rc = lov_ost_pool_init(&lov->lov_packed, 0);
         if (rc)
-                RETURN(rc);
-        rc = lov_ost_pool_init(&lov->lov_qos.lq_rr.lqr_pool, 0);
-        if (rc) {
-                lov_ost_pool_free(&lov->lov_packed);
-                RETURN(rc);
-        }
+               GOTO(out, rc);
 
         lprocfs_lov_init_vars(&lvars);
         lprocfs_obd_setup(obd, lvars.obd_vars);
@@ -834,6 +866,9 @@ int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
                                                     NULL, NULL);
 
         RETURN(0);
+
+out:
+        return rc;
 }
 
 static int lov_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
@@ -868,17 +903,21 @@ static int lov_cleanup(struct obd_device *obd)
         struct lov_obd *lov = &obd->u.lov;
         cfs_list_t *pos, *tmp;
         struct pool_desc *pool;
+        ENTRY;
 
         cfs_list_for_each_safe(pos, tmp, &lov->lov_pool_list) {
                 pool = cfs_list_entry(pos, struct pool_desc, pool_list);
                 /* free pool structs */
                 CDEBUG(D_INFO, "delete pool %p\n", pool);
+               /* In the function below, .hs_keycmp resolves to
+                * pool_hashkey_keycmp() */
+               /* coverity[overrun-buffer-val] */
                 lov_pool_del(obd, pool->pool_name);
         }
-        cfs_hash_destroy(lov->lov_pools_hash_body);
-        lov_ost_pool_free(&(lov->lov_qos.lq_rr.lqr_pool));
+        cfs_hash_putref(lov->lov_pools_hash_body);
         lov_ost_pool_free(&lov->lov_packed);
 
+       lprocfs_obd_cleanup(obd);
         if (lov->lov_tgts) {
                 int i;
                 obd_getref(obd);
@@ -903,11 +942,6 @@ static int lov_cleanup(struct obd_device *obd)
                          lov->lov_tgt_size);
                 lov->lov_tgt_size = 0;
         }
-
-        /* clear pools parent proc entry only after all pools is killed */
-        lprocfs_obd_cleanup(obd);
-
-        OBD_FREE_PTR(lov->lov_qos.lq_statfs_data);
         RETURN(0);
 }
 
@@ -976,82 +1010,6 @@ out:
         RETURN(rc);
 }
 
-#ifndef log2
-#define log2(n) cfs_ffz(~(n))
-#endif
-
-static int lov_clear_orphans(struct obd_export *export, struct obdo *src_oa,
-                             struct lov_stripe_md **ea,
-                             struct obd_trans_info *oti)
-{
-        struct lov_obd *lov;
-        struct obdo *tmp_oa;
-        struct obd_uuid *ost_uuid = NULL;
-        int rc = 0, i;
-        ENTRY;
-
-        LASSERT(src_oa->o_valid & OBD_MD_FLFLAGS &&
-                src_oa->o_flags == OBD_FL_DELORPHAN);
-
-        lov = &export->exp_obd->u.lov;
-
-        OBDO_ALLOC(tmp_oa);
-        if (tmp_oa == NULL)
-                RETURN(-ENOMEM);
-
-        if (oti->oti_ost_uuid) {
-                ost_uuid = oti->oti_ost_uuid;
-                CDEBUG(D_HA, "clearing orphans only for %s\n",
-                       ost_uuid->uuid);
-        }
-
-        obd_getref(export->exp_obd);
-        for (i = 0; i < lov->desc.ld_tgt_count; i++) {
-                struct lov_stripe_md obj_md;
-                struct lov_stripe_md *obj_mdp = &obj_md;
-                struct lov_tgt_desc *tgt;
-                int err;
-
-                tgt = lov->lov_tgts[i];
-                if (!tgt)
-                        continue;
-
-                /* if called for a specific target, we don't
-                   care if it is not active. */
-                if (!lov->lov_tgts[i]->ltd_active && ost_uuid == NULL) {
-                        CDEBUG(D_HA, "lov idx %d inactive\n", i);
-                        continue;
-                }
-
-                if (ost_uuid && !obd_uuid_equals(ost_uuid, &tgt->ltd_uuid))
-                        continue;
-
-                CDEBUG(D_CONFIG,"Clear orphans for %d:%s\n", i,
-                       obd_uuid2str(ost_uuid));
-
-                memcpy(tmp_oa, src_oa, sizeof(*tmp_oa));
-
-                LASSERT(lov->lov_tgts[i]->ltd_exp);
-                /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
-                err = obd_create(lov->lov_tgts[i]->ltd_exp,
-                                 tmp_oa, &obj_mdp, oti);
-                if (err) {
-                        /* This export will be disabled until it is recovered,
-                           and then orphan recovery will be completed. */
-                        CERROR("error in orphan recovery on OST idx %d/%d: "
-                               "rc = %d\n", i, lov->desc.ld_tgt_count, err);
-                        rc = err;
-                }
-
-                if (ost_uuid)
-                        break;
-        }
-        obd_putref(export->exp_obd);
-
-        OBDO_FREE(tmp_oa);
-        RETURN(rc);
-}
-
 static int lov_recreate(struct obd_export *exp, struct obdo *src_oa,
                         struct lov_stripe_md **ea, struct obd_trans_info *oti)
 {
@@ -1076,31 +1034,30 @@ static int lov_recreate(struct obd_export *exp, struct obdo *src_oa,
             !lov->lov_tgts[ost_idx])
                 GOTO(out, rc = -EINVAL);
 
-        for (i = 0; i < lsm->lsm_stripe_count; i++) {
-                if (lsm->lsm_oinfo[i]->loi_ost_idx == ost_idx) {
-                        if (lsm->lsm_oinfo[i]->loi_id != src_oa->o_id)
-                                GOTO(out, rc = -EINVAL);
-                        break;
-                }
-        }
+       for (i = 0; i < lsm->lsm_stripe_count; i++) {
+               if (lsm->lsm_oinfo[i]->loi_ost_idx == ost_idx) {
+                       if (ostid_id(&lsm->lsm_oinfo[i]->loi_oi) !=
+                                       ostid_id(&src_oa->o_oi))
+                               GOTO(out, rc = -EINVAL);
+                       break;
+               }
+       }
         if (i == lsm->lsm_stripe_count)
                 GOTO(out, rc = -EINVAL);
 
-        rc = obd_create(lov->lov_tgts[ost_idx]->ltd_exp, src_oa, &obj_mdp, oti);
+        rc = obd_create(NULL, lov->lov_tgts[ost_idx]->ltd_exp,
+                        src_oa, &obj_mdp, oti);
 out:
         OBD_FREE(obj_mdp, sizeof(*obj_mdp));
         RETURN(rc);
 }
 
 /* the LOV expects oa->o_id to be set to the LOV object id */
-static int lov_create(struct obd_export *exp, struct obdo *src_oa,
-                      struct lov_stripe_md **ea, struct obd_trans_info *oti)
+static int lov_create(const struct lu_env *env, struct obd_export *exp,
+                      struct obdo *src_oa, struct lov_stripe_md **ea,
+                      struct obd_trans_info *oti)
 {
         struct lov_obd *lov;
-        struct obd_info oinfo;
-        struct lov_request_set *set = NULL;
-        struct lov_request *req;
-        struct l_wait_info  lwi = { 0 };
         int rc = 0;
         ENTRY;
 
@@ -1110,8 +1067,8 @@ static int lov_create(struct obd_export *exp, struct obdo *src_oa,
 
         if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
             src_oa->o_flags == OBD_FL_DELORPHAN) {
-                rc = lov_clear_orphans(exp, src_oa, ea, oti);
-                RETURN(rc);
+               /* should be used with LOV anymore */
+               LBUG();
         }
 
         lov = &exp->exp_obd->u.lov;
@@ -1123,36 +1080,8 @@ static int lov_create(struct obd_export *exp, struct obdo *src_oa,
         if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
             (src_oa->o_flags & OBD_FL_RECREATE_OBJS)) {
                  rc = lov_recreate(exp, src_oa, ea, oti);
-                 GOTO(out, rc);
-        }
-
-        /* issue statfs rpcs if the osfs data is older than qos_maxage - 1s,
-         * later in alloc_qos(), we will wait for those rpcs to complete if
-         * the osfs age is older than 2 * qos_maxage */
-        qos_statfs_update(exp->exp_obd,
-                          cfs_time_shift_64(-lov->desc.ld_qos_maxage) + CFS_HZ,
-                          0);
-
-        rc = lov_prep_create_set(exp, &oinfo, ea, src_oa, oti, &set);
-        if (rc)
-                GOTO(out, rc);
-
-        cfs_list_for_each_entry(req, &set->set_list, rq_link) {
-                /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
-                rc = obd_create_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
-                                      &req->rq_oi, &req->rq_oi.oi_md, oti);
         }
 
-        /* osc_create have timeout equ obd_timeout/2 so waiting don't be
-         * longer then this */
-        l_wait_event(set->set_waitq, lov_finished_set(set), &lwi);
-
-        /* we not have ptlrpc set for assign set->interpret and should
-         * be call interpret function himself. calling from cb_create_update
-         * not permited because lov_fini_create_set can sleep for long time,
-         * but we must avoid sleeping in ptlrpcd interpret function. */
-        rc = lov_fini_create_set(set, ea);
-out:
         obd_putref(exp->exp_obd);
         RETURN(rc);
 }
@@ -1165,9 +1094,10 @@ do {
                  "%p->lsm_magic=%x\n", (lsmp), (lsmp)->lsm_magic);              \
 } while (0)
 
-static int lov_destroy(struct obd_export *exp, struct obdo *oa,
-                       struct lov_stripe_md *lsm, struct obd_trans_info *oti,
-                       struct obd_export *md_exp, void *capa)
+static int lov_destroy(const struct lu_env *env, struct obd_export *exp,
+                       struct obdo *oa, struct lov_stripe_md *lsm,
+                       struct obd_trans_info *oti, struct obd_export *md_exp,
+                       void *capa)
 {
         struct lov_request_set *set;
         struct obd_info oinfo;
@@ -1199,17 +1129,18 @@ static int lov_destroy(struct obd_export *exp, struct obdo *oa,
                 if (oa->o_valid & OBD_MD_FLCOOKIE)
                         oti->oti_logcookies = set->set_cookies + req->rq_stripe;
 
-                err = obd_destroy(lov->lov_tgts[req->rq_idx]->ltd_exp,
-                                  req->rq_oi.oi_oa, NULL, oti, NULL, capa);
-                err = lov_update_common_set(set, req, err);
-                if (err) {
-                        CERROR("error: destroying objid "LPX64" subobj "
-                               LPX64" on OST idx %d: rc = %d\n",
-                               oa->o_id, req->rq_oi.oi_oa->o_id,
-                               req->rq_idx, err);
-                        if (!rc)
-                                rc = err;
-                }
+               err = obd_destroy(env, lov->lov_tgts[req->rq_idx]->ltd_exp,
+                                 req->rq_oi.oi_oa, NULL, oti, NULL, capa);
+               err = lov_update_common_set(set, req, err);
+               if (err) {
+                       CERROR("%s: destroying objid "DOSTID" subobj "
+                              DOSTID" on OST idx %d: rc = %d\n",
+                              exp->exp_obd->obd_name, POSTID(&oa->o_oi),
+                              POSTID(&req->rq_oi.oi_oa->o_oi),
+                              req->rq_idx, err);
+                       if (!rc)
+                               rc = err;
+               }
         }
 
         if (rc == 0) {
@@ -1222,7 +1153,8 @@ out:
         RETURN(rc ? rc : err);
 }
 
-static int lov_getattr(struct obd_export *exp, struct obd_info *oinfo)
+static int lov_getattr(const struct lu_env *env, struct obd_export *exp,
+                       struct obd_info *oinfo)
 {
         struct lov_request_set *set;
         struct lov_request *req;
@@ -1246,20 +1178,22 @@ static int lov_getattr(struct obd_export *exp, struct obd_info *oinfo)
         cfs_list_for_each (pos, &set->set_list) {
                 req = cfs_list_entry(pos, struct lov_request, rq_link);
 
-                CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx "
-                       "%u\n", oinfo->oi_oa->o_id, req->rq_stripe,
-                       req->rq_oi.oi_oa->o_id, req->rq_idx);
+               CDEBUG(D_INFO, "objid "DOSTID"[%d] has subobj "DOSTID" at idx"
+                      " %u\n", POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe,
+                      POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx);
 
-                rc = obd_getattr(lov->lov_tgts[req->rq_idx]->ltd_exp,
+                rc = obd_getattr(env, lov->lov_tgts[req->rq_idx]->ltd_exp,
                                  &req->rq_oi);
-                err = lov_update_common_set(set, req, rc);
-                if (err) {
-                        CERROR("error: getattr objid "LPX64" subobj "
-                               LPX64" on OST idx %d: rc = %d\n",
-                               oinfo->oi_oa->o_id, req->rq_oi.oi_oa->o_id,
-                               req->rq_idx, err);
-                        break;
-                }
+               err = lov_update_common_set(set, req, rc);
+               if (err) {
+                       CERROR("%s: getattr objid "DOSTID" subobj "
+                              DOSTID" on OST idx %d: rc = %d\n",
+                              exp->exp_obd->obd_name,
+                              POSTID(&oinfo->oi_oa->o_oi),
+                              POSTID(&req->rq_oi.oi_oa->o_oi),
+                              req->rq_idx, err);
+                       break;
+               }
         }
 
         rc = lov_fini_getattr_set(set);
@@ -1277,7 +1211,7 @@ static int lov_getattr_interpret(struct ptlrpc_request_set *rqset,
 
         /* don't do attribute merge if this aysnc op failed */
         if (rc)
-                lovset->set_completes = 0;
+                cfs_atomic_set(&lovset->set_completes, 0);
         err = lov_fini_getattr_set(lovset);
         RETURN(rc ? rc : err);
 }
@@ -1304,26 +1238,28 @@ static int lov_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
         if (rc)
                 RETURN(rc);
 
-        CDEBUG(D_INFO, "objid "LPX64": %ux%u byte stripes\n",
-               oinfo->oi_md->lsm_object_id, oinfo->oi_md->lsm_stripe_count,
-               oinfo->oi_md->lsm_stripe_size);
-
-        cfs_list_for_each (pos, &lovset->set_list) {
-                req = cfs_list_entry(pos, struct lov_request, rq_link);
-
-                CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx "
-                       "%u\n", oinfo->oi_oa->o_id, req->rq_stripe,
-                       req->rq_oi.oi_oa->o_id, req->rq_idx);
-                rc = obd_getattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
-                                       &req->rq_oi, rqset);
-                if (rc) {
-                        CERROR("error: getattr objid "LPX64" subobj "
-                               LPX64" on OST idx %d: rc = %d\n",
-                               oinfo->oi_oa->o_id, req->rq_oi.oi_oa->o_id,
-                               req->rq_idx, rc);
-                        GOTO(out, rc);
-                }
-        }
+       CDEBUG(D_INFO, "objid "DOSTID": %ux%u byte stripes\n",
+              POSTID(&oinfo->oi_md->lsm_oi), oinfo->oi_md->lsm_stripe_count,
+              oinfo->oi_md->lsm_stripe_size);
+
+       cfs_list_for_each(pos, &lovset->set_list) {
+               req = cfs_list_entry(pos, struct lov_request, rq_link);
+
+               CDEBUG(D_INFO, "objid "DOSTID"[%d] has subobj "DOSTID" at idx"
+                      "%u\n", POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe,
+                      POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx);
+               rc = obd_getattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
+                                      &req->rq_oi, rqset);
+               if (rc) {
+                       CERROR("%s: getattr objid "DOSTID" subobj"
+                              DOSTID" on OST idx %d: rc = %d\n",
+                              exp->exp_obd->obd_name,
+                              POSTID(&oinfo->oi_oa->o_oi),
+                              POSTID(&req->rq_oi.oi_oa->o_oi),
+                              req->rq_idx, rc);
+                       GOTO(out, rc);
+               }
+       }
 
         if (!cfs_list_empty(&rqset->set_requests)) {
                 LASSERT(rc == 0);
@@ -1334,13 +1270,13 @@ static int lov_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
         }
 out:
         if (rc)
-                lovset->set_completes = 0;
+                cfs_atomic_set(&lovset->set_completes, 0);
         err = lov_fini_getattr_set(lovset);
         RETURN(rc ? rc : err);
 }
 
-static int lov_setattr(struct obd_export *exp, struct obd_info *oinfo,
-                       struct obd_trans_info *oti)
+static int lov_setattr(const struct lu_env *env, struct obd_export *exp,
+                       struct obd_info *oinfo, struct obd_trans_info *oti)
 {
         struct lov_request_set *set;
         struct lov_obd *lov;
@@ -1371,17 +1307,19 @@ static int lov_setattr(struct obd_export *exp, struct obd_info *oinfo,
         cfs_list_for_each (pos, &set->set_list) {
                 req = cfs_list_entry(pos, struct lov_request, rq_link);
 
-                rc = obd_setattr(lov->lov_tgts[req->rq_idx]->ltd_exp,
-                                 &req->rq_oi, NULL);
-                err = lov_update_setattr_set(set, req, rc);
-                if (err) {
-                        CERROR("error: setattr objid "LPX64" subobj "
-                               LPX64" on OST idx %d: rc = %d\n",
-                               set->set_oi->oi_oa->o_id,
-                               req->rq_oi.oi_oa->o_id, req->rq_idx, err);
-                        if (!rc)
-                                rc = err;
-                }
+               rc = obd_setattr(env, lov->lov_tgts[req->rq_idx]->ltd_exp,
+                                &req->rq_oi, NULL);
+               err = lov_update_setattr_set(set, req, rc);
+               if (err) {
+                       CERROR("%s: setattr objid "DOSTID" subobj "
+                              DOSTID" on OST idx %d: rc = %d\n",
+                              exp->exp_obd->obd_name,
+                              POSTID(&set->set_oi->oi_oa->o_oi),
+                              POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx,
+                              err);
+                       if (!rc)
+                               rc = err;
+               }
         }
         err = lov_fini_setattr_set(set);
         if (!rc)
@@ -1397,7 +1335,7 @@ static int lov_setattr_interpret(struct ptlrpc_request_set *rqset,
         ENTRY;
 
         if (rc)
-                lovset->set_completes = 0;
+                cfs_atomic_set(&lovset->set_completes, 0);
         err = lov_fini_setattr_set(lovset);
         RETURN(rc ? rc : err);
 }
@@ -1430,37 +1368,38 @@ static int lov_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
         if (rc)
                 RETURN(rc);
 
-        CDEBUG(D_INFO, "objid "LPX64": %ux%u byte stripes\n",
-               oinfo->oi_md->lsm_object_id, oinfo->oi_md->lsm_stripe_count,
-               oinfo->oi_md->lsm_stripe_size);
-
-        cfs_list_for_each (pos, &set->set_list) {
-                req = cfs_list_entry(pos, struct lov_request, rq_link);
-
-                if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
-                        oti->oti_logcookies = set->set_cookies + req->rq_stripe;
-
-                CDEBUG(D_INFO, "objid "LPX64"[%d] has subobj "LPX64" at idx "
-                       "%u\n", oinfo->oi_oa->o_id, req->rq_stripe,
-                       req->rq_oi.oi_oa->o_id, req->rq_idx);
-
-                rc = obd_setattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
-                                       &req->rq_oi, oti, rqset);
-                if (rc) {
-                        CERROR("error: setattr objid "LPX64" subobj "
-                               LPX64" on OST idx %d: rc = %d\n",
-                               set->set_oi->oi_oa->o_id,
-                               req->rq_oi.oi_oa->o_id,
-                               req->rq_idx, rc);
-                        break;
-                }
-        }
+       CDEBUG(D_INFO, "objid "DOSTID": %ux%u byte stripes\n",
+              POSTID(&oinfo->oi_md->lsm_oi),
+              oinfo->oi_md->lsm_stripe_count,
+              oinfo->oi_md->lsm_stripe_size);
+
+       cfs_list_for_each(pos, &set->set_list) {
+               req = cfs_list_entry(pos, struct lov_request, rq_link);
+
+               if (oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
+                       oti->oti_logcookies = set->set_cookies + req->rq_stripe;
+
+               CDEBUG(D_INFO, "objid "DOSTID"[%d] has subobj "DOSTID" at idx"
+                      "%u\n", POSTID(&oinfo->oi_oa->o_oi), req->rq_stripe,
+                      POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx);
+
+               rc = obd_setattr_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
+                                      &req->rq_oi, oti, rqset);
+               if (rc) {
+                       CERROR("error: setattr objid "DOSTID" subobj"
+                              DOSTID" on OST idx %d: rc = %d\n",
+                              POSTID(&set->set_oi->oi_oa->o_oi),
+                              POSTID(&req->rq_oi.oi_oa->o_oi),
+                              req->rq_idx, rc);
+                       break;
+               }
+       }
 
         /* If we are not waiting for responses on async requests, return. */
         if (rc || !rqset || cfs_list_empty(&rqset->set_requests)) {
                 int err;
                 if (rc)
-                        set->set_completes = 0;
+                        cfs_atomic_set(&set->set_completes, 0);
                 err = lov_fini_setattr_set(set);
                 RETURN(rc ? rc : err);
         }
@@ -1480,7 +1419,7 @@ static int lov_punch_interpret(struct ptlrpc_request_set *rqset,
         ENTRY;
 
         if (rc)
-                lovset->set_completes = 0;
+                cfs_atomic_set(&lovset->set_completes, 0);
         err = lov_fini_punch_set(lovset);
         RETURN(rc ? rc : err);
 }
@@ -1488,8 +1427,8 @@ static int lov_punch_interpret(struct ptlrpc_request_set *rqset,
 /* FIXME: maybe we'll just make one node the authoritative attribute node, then
  * we can send this 'punch' to just the authoritative node and the nodes
  * that the punch will affect. */
-static int lov_punch(struct obd_export *exp, struct obd_info *oinfo,
-                     struct obd_trans_info *oti,
+static int lov_punch(const struct lu_env *env, struct obd_export *exp,
+                     struct obd_info *oinfo, struct obd_trans_info *oti,
                      struct ptlrpc_request_set *rqset)
 {
         struct lov_request_set *set;
@@ -1513,15 +1452,16 @@ static int lov_punch(struct obd_export *exp, struct obd_info *oinfo,
         cfs_list_for_each (pos, &set->set_list) {
                 req = cfs_list_entry(pos, struct lov_request, rq_link);
 
-                rc = obd_punch(lov->lov_tgts[req->rq_idx]->ltd_exp,
-                               &req->rq_oi, NULL, rqset);
-                if (rc) {
-                        CERROR("error: punch objid "LPX64" subobj "LPX64
-                               " on OST idx %d: rc = %d\n",
-                               set->set_oi->oi_oa->o_id,
-                               req->rq_oi.oi_oa->o_id, req->rq_idx, rc);
-                        break;
-                }
+               rc = obd_punch(env, lov->lov_tgts[req->rq_idx]->ltd_exp,
+                              &req->rq_oi, NULL, rqset);
+               if (rc) {
+                       CERROR("%s: punch objid "DOSTID" subobj "DOSTID
+                              " on OST idx %d: rc = %d\n",
+                              exp->exp_obd->obd_name,
+                              POSTID(&set->set_oi->oi_oa->o_oi),
+                              POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx, rc);
+                       break;
+               }
         }
 
         if (rc || cfs_list_empty(&rqset->set_requests)) {
@@ -1537,49 +1477,73 @@ static int lov_punch(struct obd_export *exp, struct obd_info *oinfo,
         RETURN(0);
 }
 
-static int lov_sync(struct obd_export *exp, struct obdo *oa,
-                    struct lov_stripe_md *lsm, obd_off start, obd_off end,
-                    void *capa)
+static int lov_sync_interpret(struct ptlrpc_request_set *rqset,
+                              void *data, int rc)
 {
-        struct lov_request_set *set;
-        struct obd_info oinfo;
+        struct lov_request_set *lovset = data;
+        int err;
+        ENTRY;
+
+        if (rc)
+                cfs_atomic_set(&lovset->set_completes, 0);
+        err = lov_fini_sync_set(lovset);
+        RETURN(rc ?: err);
+}
+
+static int lov_sync(const struct lu_env *env, struct obd_export *exp,
+                    struct obd_info *oinfo, obd_off start, obd_off end,
+                    struct ptlrpc_request_set *rqset)
+{
+        struct lov_request_set *set = NULL;
         struct lov_obd *lov;
         cfs_list_t *pos;
         struct lov_request *req;
-        int err = 0, rc = 0;
+        int rc = 0;
         ENTRY;
 
-        ASSERT_LSM_MAGIC(lsm);
+        ASSERT_LSM_MAGIC(oinfo->oi_md);
+        LASSERT(rqset != NULL);
 
         if (!exp->exp_obd)
                 RETURN(-ENODEV);
 
         lov = &exp->exp_obd->u.lov;
-        rc = lov_prep_sync_set(exp, &oinfo, oa, lsm, start, end, &set);
+        rc = lov_prep_sync_set(exp, oinfo, start, end, &set);
         if (rc)
                 RETURN(rc);
 
+       CDEBUG(D_INFO, "fsync objid "DOSTID" ["LPX64", "LPX64"]\n",
+              POSTID(&set->set_oi->oi_oa->o_oi), start, end);
+
         cfs_list_for_each (pos, &set->set_list) {
                 req = cfs_list_entry(pos, struct lov_request, rq_link);
 
-                rc = obd_sync(lov->lov_tgts[req->rq_idx]->ltd_exp,
-                              req->rq_oi.oi_oa, NULL,
-                              req->rq_oi.oi_policy.l_extent.start,
-                              req->rq_oi.oi_policy.l_extent.end, capa);
-                err = lov_update_common_set(set, req, rc);
-                if (err) {
-                        CERROR("error: fsync objid "LPX64" subobj "LPX64
-                               " on OST idx %d: rc = %d\n",
-                               set->set_oi->oi_oa->o_id,
-                               req->rq_oi.oi_oa->o_id, req->rq_idx, rc);
-                        if (!rc)
-                                rc = err;
-                }
+                rc = obd_sync(env, lov->lov_tgts[req->rq_idx]->ltd_exp,
+                              &req->rq_oi, req->rq_oi.oi_policy.l_extent.start,
+                              req->rq_oi.oi_policy.l_extent.end, rqset);
+               if (rc) {
+                       CERROR("%s: fsync objid "DOSTID" subobj "DOSTID
+                              " on OST idx %d: rc = %d\n",
+                              exp->exp_obd->obd_name,
+                              POSTID(&set->set_oi->oi_oa->o_oi),
+                              POSTID(&req->rq_oi.oi_oa->o_oi), req->rq_idx,
+                              rc);
+                       break;
+               }
         }
-        err = lov_fini_sync_set(set);
-        if (!rc)
-                rc = err;
-        RETURN(rc);
+
+        /* If we are not waiting for responses on async requests, return. */
+        if (rc || cfs_list_empty(&rqset->set_requests)) {
+                int err = lov_fini_sync_set(set);
+
+                RETURN(rc ?: err);
+        }
+
+        LASSERT(rqset->set_interpret == NULL);
+        rqset->set_interpret = lov_sync_interpret;
+        rqset->set_arg = (void *)set;
+
+        RETURN(0);
 }
 
 static int lov_brw_check(struct lov_obd *lov, struct obd_info *lov_oinfo,
@@ -1727,8 +1691,6 @@ static int lov_change_cbdata(struct obd_export *exp,
         if (!exp || !exp->exp_obd)
                 RETURN(-ENODEV);
 
-        LASSERT_MDS_GROUP(lsm->lsm_object_gr);
-
         lov = &exp->exp_obd->u.lov;
         for (i = 0; i < lsm->lsm_stripe_count; i++) {
                 struct lov_stripe_md submd;
@@ -1739,13 +1701,48 @@ static int lov_change_cbdata(struct obd_export *exp,
                         continue;
                 }
 
-                submd.lsm_object_id = loi->loi_id;
-                submd.lsm_object_gr = lsm->lsm_object_gr;
-                submd.lsm_stripe_count = 0;
-                rc = obd_change_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
-                                       &submd, it, data);
-        }
-        RETURN(rc);
+               submd.lsm_oi = loi->loi_oi;
+               submd.lsm_stripe_count = 0;
+               rc = obd_change_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
+                                      &submd, it, data);
+       }
+       RETURN(rc);
+}
+
+/* find any ldlm lock of the inode in lov
+ * return 0    not find
+ *        1    find one
+ *      < 0    error */
+static int lov_find_cbdata(struct obd_export *exp,
+                           struct lov_stripe_md *lsm, ldlm_iterator_t it,
+                           void *data)
+{
+        struct lov_obd *lov;
+        int rc = 0, i;
+        ENTRY;
+
+        ASSERT_LSM_MAGIC(lsm);
+
+        if (!exp || !exp->exp_obd)
+                RETURN(-ENODEV);
+
+        lov = &exp->exp_obd->u.lov;
+        for (i = 0; i < lsm->lsm_stripe_count; i++) {
+                struct lov_stripe_md submd;
+                struct lov_oinfo *loi = lsm->lsm_oinfo[i];
+
+                if (!lov->lov_tgts[loi->loi_ost_idx]) {
+                        CDEBUG(D_HA, "lov idx %d NULL \n", loi->loi_ost_idx);
+                        continue;
+                }
+               submd.lsm_oi = loi->loi_oi;
+               submd.lsm_stripe_count = 0;
+               rc = obd_find_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
+                                    &submd, it, data);
+               if (rc != 0)
+                       RETURN(rc);
+       }
+       RETURN(rc);
 }
 
 static int lov_cancel(struct obd_export *exp, struct lov_stripe_md *lsm,
@@ -1765,37 +1762,36 @@ static int lov_cancel(struct obd_export *exp, struct lov_stripe_md *lsm,
         if (!exp || !exp->exp_obd)
                 RETURN(-ENODEV);
 
-        LASSERT_MDS_GROUP(lsm->lsm_object_gr);
         LASSERT(lockh);
         lov = &exp->exp_obd->u.lov;
         rc = lov_prep_cancel_set(exp, &oinfo, lsm, mode, lockh, &set);
         if (rc)
                 RETURN(rc);
 
-        cfs_list_for_each (pos, &set->set_list) {
-                req = cfs_list_entry(pos, struct lov_request, rq_link);
-                lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
-
-                rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp,
-                                req->rq_oi.oi_md, mode, lov_lockhp);
-                rc = lov_update_common_set(set, req, rc);
-                if (rc) {
-                        CERROR("error: cancel objid "LPX64" subobj "
-                               LPX64" on OST idx %d: rc = %d\n",
-                               lsm->lsm_object_id,
-                               req->rq_oi.oi_md->lsm_object_id,
-                               req->rq_idx, rc);
-                        err = rc;
-                }
-
-        }
-        lov_fini_cancel_set(set);
-        RETURN(err);
+       cfs_list_for_each(pos, &set->set_list) {
+               req = cfs_list_entry(pos, struct lov_request, rq_link);
+               lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
+
+               rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp,
+                               req->rq_oi.oi_md, mode, lov_lockhp);
+               rc = lov_update_common_set(set, req, rc);
+               if (rc) {
+                       CERROR("%s: cancel objid "DOSTID" subobj "
+                              DOSTID" on OST idx %d: rc = %d\n",
+                              exp->exp_obd->obd_name, POSTID(&lsm->lsm_oi),
+                              POSTID(&req->rq_oi.oi_md->lsm_oi),
+                              req->rq_idx, rc);
+                       err = rc;
+               }
+
+       }
+       lov_fini_cancel_set(set);
+       RETURN(err);
 }
 
 static int lov_cancel_unused(struct obd_export *exp,
                              struct lov_stripe_md *lsm,
-                             int flags, void *opaque)
+                             ldlm_cancel_flags_t flags, void *opaque)
 {
         struct lov_obd *lov;
         int rc = 0, i;
@@ -1821,34 +1817,34 @@ static int lov_cancel_unused(struct obd_export *exp,
 
         ASSERT_LSM_MAGIC(lsm);
 
-        LASSERT_MDS_GROUP(lsm->lsm_object_gr);
-        for (i = 0; i < lsm->lsm_stripe_count; i++) {
-                struct lov_stripe_md submd;
-                struct lov_oinfo *loi = lsm->lsm_oinfo[i];
-                int err;
-
-                if (!lov->lov_tgts[loi->loi_ost_idx]) {
-                        CDEBUG(D_HA, "lov idx %d NULL\n", loi->loi_ost_idx);
-                        continue;
-                }
-
-                if (!lov->lov_tgts[loi->loi_ost_idx]->ltd_active)
-                        CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
-
-                submd.lsm_object_id = loi->loi_id;
-                submd.lsm_object_gr = lsm->lsm_object_gr;
-                submd.lsm_stripe_count = 0;
-                err = obd_cancel_unused(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
-                                        &submd, flags, opaque);
-                if (err && lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
-                        CERROR("error: cancel unused objid "LPX64" subobj "LPX64
-                               " on OST idx %d: rc = %d\n", lsm->lsm_object_id,
-                               loi->loi_id, loi->loi_ost_idx, err);
-                        if (!rc)
-                                rc = err;
-                }
-        }
-        RETURN(rc);
+       for (i = 0; i < lsm->lsm_stripe_count; i++) {
+               struct lov_stripe_md submd;
+               struct lov_oinfo *loi = lsm->lsm_oinfo[i];
+               int idx = loi->loi_ost_idx;
+               int err;
+
+               if (!lov->lov_tgts[idx]) {
+                       CDEBUG(D_HA, "lov idx %d NULL\n", idx);
+                       continue;
+               }
+
+               if (!lov->lov_tgts[idx]->ltd_active)
+                       CDEBUG(D_HA, "lov idx %d inactive\n", idx);
+
+               submd.lsm_oi = loi->loi_oi;
+               submd.lsm_stripe_count = 0;
+               err = obd_cancel_unused(lov->lov_tgts[idx]->ltd_exp,
+                                       &submd, flags, opaque);
+               if (err && lov->lov_tgts[idx]->ltd_active) {
+                       CERROR("%s: cancel unused objid "DOSTID
+                              " subobj "DOSTID" on OST idx %d: rc = %d\n",
+                              exp->exp_obd->obd_name, POSTID(&lsm->lsm_oi),
+                              POSTID(&loi->loi_oi), idx, err);
+                       if (!rc)
+                               rc = err;
+               }
+       }
+       RETURN(rc);
 }
 
 int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc)
@@ -1858,15 +1854,16 @@ int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc)
         ENTRY;
 
         if (rc)
-                lovset->set_completes = 0;
+                cfs_atomic_set(&lovset->set_completes, 0);
 
         err = lov_fini_statfs_set(lovset);
         RETURN(rc ? rc : err);
 }
 
-static int lov_statfs_async(struct obd_device *obd, struct obd_info *oinfo,
+static int lov_statfs_async(struct obd_export *exp, struct obd_info *oinfo,
                             __u64 max_age, struct ptlrpc_request_set *rqset)
 {
+        struct obd_device      *obd = class_exp2obd(exp);
         struct lov_request_set *set;
         struct lov_request *req;
         cfs_list_t *pos;
@@ -1883,12 +1880,9 @@ static int lov_statfs_async(struct obd_device *obd, struct obd_info *oinfo,
                 RETURN(rc);
 
         cfs_list_for_each (pos, &set->set_list) {
-                struct obd_device *osc_obd;
-
                 req = cfs_list_entry(pos, struct lov_request, rq_link);
-
-                osc_obd = class_exp2obd(lov->lov_tgts[req->rq_idx]->ltd_exp);
-                rc = obd_statfs_async(osc_obd, &req->rq_oi, max_age, rqset);
+                rc = obd_statfs_async(lov->lov_tgts[req->rq_idx]->ltd_exp,
+                                      &req->rq_oi, max_age, rqset);
                 if (rc)
                         break;
         }
@@ -1896,7 +1890,7 @@ static int lov_statfs_async(struct obd_device *obd, struct obd_info *oinfo,
         if (rc || cfs_list_empty(&rqset->set_requests)) {
                 int err;
                 if (rc)
-                        set->set_completes = 0;
+                        cfs_atomic_set(&set->set_completes, 0);
                 err = lov_fini_statfs_set(set);
                 RETURN(rc ? rc : err);
         }
@@ -1907,8 +1901,8 @@ static int lov_statfs_async(struct obd_device *obd, struct obd_info *oinfo,
         RETURN(0);
 }
 
-static int lov_statfs(struct obd_device *obd, struct obd_statfs *osfs,
-                      __u64 max_age, __u32 flags)
+static int lov_statfs(const struct lu_env *env, struct obd_export *exp,
+                      struct obd_statfs *osfs, __u64 max_age, __u32 flags)
 {
         struct ptlrpc_request_set *set = NULL;
         struct obd_info oinfo = { { { 0 } } };
@@ -1924,7 +1918,7 @@ static int lov_statfs(struct obd_device *obd, struct obd_statfs *osfs,
 
         oinfo.oi_osfs = osfs;
         oinfo.oi_flags = flags;
-        rc = lov_statfs_async(obd, &oinfo, max_age, set);
+        rc = lov_statfs_async(exp, &oinfo, max_age, set);
         if (rc == 0)
                 rc = ptlrpc_set_wait(set);
         ptlrpc_set_destroy(set);
@@ -1947,10 +1941,9 @@ static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
                 struct obd_device *osc_obd;
                 struct obd_statfs stat_buf = {0};
                 __u32 index;
+               __u32 flags;
 
                 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
-                LASSERT(data->ioc_plen1 == sizeof(struct obd_statfs));
-
                 if ((index >= count))
                         RETURN(-ENODEV);
 
@@ -1964,17 +1957,22 @@ static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
                 if (!osc_obd)
                         RETURN(-EINVAL);
 
+                /* copy UUID */
+               if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(osc_obd),
+                                min((int)data->ioc_plen2,
+                                    (int)sizeof(struct obd_uuid))))
+                        RETURN(-EFAULT);
+
+               flags = uarg ? *(__u32*)uarg : 0;
                 /* got statfs data */
-                rc = obd_statfs(osc_obd, &stat_buf,
-                                cfs_time_current_64() - CFS_HZ, 0);
+                rc = obd_statfs(NULL, lov->lov_tgts[index]->ltd_exp, &stat_buf,
+                                cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
+                                flags);
                 if (rc)
                         RETURN(rc);
-                if (cfs_copy_to_user(data->ioc_pbuf1, &stat_buf,
-                                     data->ioc_plen1))
-                        RETURN(-EFAULT);
-                /* copy UUID */
-                if (cfs_copy_to_user(data->ioc_pbuf2, obd2cli_tgt(osc_obd),
-                                     data->ioc_plen2))
+               if (copy_to_user(data->ioc_pbuf1, &stat_buf,
+                                     min((int) data->ioc_plen1,
+                                         (int) sizeof(stat_buf))))
                         RETURN(-EFAULT);
                 break;
         }
@@ -2018,7 +2016,7 @@ static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
                         *genp = lov->lov_tgts[i]->ltd_gen;
                 }
 
-                if (cfs_copy_to_user((void *)uarg, buf, len))
+               if (copy_to_user((void *)uarg, buf, len))
                         rc = -EFAULT;
                 obd_ioctl_freedata(buf, len);
                 break;
@@ -2037,13 +2035,13 @@ static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
                 struct lov_tgt_desc *tgt = NULL;
                 struct obd_quotactl *oqctl;
 
-                if (qctl->qc_valid == QC_OSTIDX) {
-                        if (qctl->qc_idx < 0 || count <= qctl->qc_idx)
-                                RETURN(-EINVAL);
+               if (qctl->qc_valid == QC_OSTIDX) {
+                       if (count <= qctl->qc_idx)
+                               RETURN(-EINVAL);
 
-                        tgt = lov->lov_tgts[qctl->qc_idx];
-                        if (!tgt || !tgt->ltd_exp)
-                                RETURN(-EINVAL);
+                       tgt = lov->lov_tgts[qctl->qc_idx];
+                       if (!tgt || !tgt->ltd_exp)
+                               RETURN(-EINVAL);
                 } else if (qctl->qc_valid == QC_UUID) {
                         for (i = 0; i < count; i++) {
                                 tgt = lov->lov_tgts[i];
@@ -2087,11 +2085,16 @@ static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
 
                 for (i = 0; i < count; i++) {
                         int err;
+                        struct obd_device *osc_obd;
 
                         /* OST was disconnected */
                         if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp)
                                 continue;
 
+                        /* ll_umount_begin() sets force flag but for lov, not
+                         * osc. Let's pass it through */
+                        osc_obd = class_exp2obd(lov->lov_tgts[i]->ltd_exp);
+                        osc_obd->obd_force = obddev->obd_force;
                         err = obd_iocontrol(cmd, lov->lov_tgts[i]->ltd_exp,
                                             len, karg, uarg);
                         if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) {
@@ -2159,6 +2162,8 @@ obd_size fiemap_calc_fm_end_offset(struct ll_user_fiemap *fiemap,
                         break;
                 }
         }
+       if (stripe_no == -1)
+               return -EINVAL;
 
         /* If we have finished mapping on previous device, shift logical
          * offset to start of next device */
@@ -2262,7 +2267,7 @@ static int lov_fiemap(struct lov_obd *lov, __u32 keylen, void *key,
         int count_local;
         unsigned int get_num_extents = 0;
         int ost_index = 0, actual_start_stripe, start_stripe;
-        obd_size fm_start, fm_end, fm_length, fm_end_offset = 0;
+       obd_size fm_start, fm_end, fm_length, fm_end_offset;
         obd_size curr_loc;
         int current_extent = 0, rc = 0, i;
         int ost_eof = 0; /* EOF for object */
@@ -2271,13 +2276,34 @@ static int lov_fiemap(struct lov_obd *lov, __u32 keylen, void *key,
         int cur_stripe = 0, cur_stripe_wrap = 0, stripe_count;
         unsigned int buffer_size = FIEMAP_BUFFER_SIZE;
 
-        if (lsm == NULL)
-                GOTO(out, rc = 0);
+       if (!lsm_has_objects(lsm)) {
+               if (lsm && lsm_is_released(lsm) && (fm_key->fiemap.fm_start <
+                   fm_key->oa.o_size)) {
+                       /* released file, return a minimal FIEMAP if
+                        * request fits in file-size.
+                        */
+                       fiemap->fm_mapped_extents = 1;
+                       fiemap->fm_extents[0].fe_logical =
+                                               fm_key->fiemap.fm_start;
+                       if (fm_key->fiemap.fm_start + fm_key->fiemap.fm_length <
+                           fm_key->oa.o_size)
+                               fiemap->fm_extents[0].fe_length =
+                                               fm_key->fiemap.fm_length;
+                       else
+                               fiemap->fm_extents[0].fe_length =
+                                               fm_key->oa.o_size -
+                                               fm_key->fiemap.fm_start;
+                       fiemap->fm_extents[0].fe_flags |=
+                                               (FIEMAP_EXTENT_UNKNOWN |
+                                                FIEMAP_EXTENT_LAST);
+               }
+               GOTO(out, rc = 0);
+       }
 
         if (fiemap_count_to_size(fm_key->fiemap.fm_extent_count) < buffer_size)
                 buffer_size = fiemap_count_to_size(fm_key->fiemap.fm_extent_count);
 
-        OBD_ALLOC(fm_local, buffer_size);
+        OBD_ALLOC_LARGE(fm_local, buffer_size);
         if (fm_local == NULL)
                 GOTO(out, rc = -ENOMEM);
         lcl_fm_ext = &fm_local->fm_extents[0];
@@ -2298,8 +2324,10 @@ static int lov_fiemap(struct lov_obd *lov, __u32 keylen, void *key,
         last_stripe = fiemap_calc_last_stripe(lsm, fm_start, fm_end,
                                             actual_start_stripe, &stripe_count);
 
-        fm_end_offset = fiemap_calc_fm_end_offset(fiemap, lsm, fm_start, fm_end,
-                                                  &start_stripe);
+       fm_end_offset = fiemap_calc_fm_end_offset(fiemap, lsm, fm_start,
+                                                 fm_end, &start_stripe);
+       if (fm_end_offset == -EINVAL)
+               GOTO(out, rc = -EINVAL);
 
         if (fiemap->fm_extent_count == 0) {
                 get_num_extents = 1;
@@ -2364,7 +2392,7 @@ static int lov_fiemap(struct lov_obd *lov, __u32 keylen, void *key,
                         fm_local->fm_mapped_extents = 0;
                         fm_local->fm_flags = fiemap->fm_flags;
 
-                        fm_key->oa.o_id = lsm->lsm_oinfo[cur_stripe]->loi_id;
+                       fm_key->oa.o_oi = lsm->lsm_oinfo[cur_stripe]->loi_oi;
                         ost_index = lsm->lsm_oinfo[cur_stripe]->loi_ost_idx;
 
                         if (ost_index < 0 || ost_index >=lov->desc.ld_tgt_count)
@@ -2387,7 +2415,8 @@ static int lov_fiemap(struct lov_obd *lov, __u32 keylen, void *key,
                         fm_local->fm_flags &= ~FIEMAP_FLAG_DEVICE_ORDER;
                         memcpy(&fm_key->fiemap, fm_local, sizeof(*fm_local));
                         *vallen=fiemap_count_to_size(fm_local->fm_extent_count);
-                        rc = obd_get_info(lov->lov_tgts[ost_index]->ltd_exp,
+                        rc = obd_get_info(NULL,
+                                          lov->lov_tgts[ost_index]->ltd_exp,
                                           keylen, key, vallen, fm_local, lsm);
                         if (rc != 0)
                                 GOTO(out, rc);
@@ -2467,12 +2496,13 @@ skip_last_device_calc:
         fiemap->fm_mapped_extents = current_extent;
 
 out:
-        OBD_FREE(fm_local, buffer_size);
+       if (fm_local)
+               OBD_FREE_LARGE(fm_local, buffer_size);
         return rc;
 }
 
-static int lov_get_info(struct obd_export *exp, __u32 keylen,
-                        void *key, __u32 *vallen, void *val,
+static int lov_get_info(const struct lu_env *env, struct obd_export *exp,
+                        __u32 keylen, void *key, __u32 *vallen, void *val,
                         struct lov_stripe_md *lsm)
 {
         struct obd_device *obddev = class_exp2obd(exp);
@@ -2508,12 +2538,12 @@ static int lov_get_info(struct obd_export *exp, __u32 keylen,
                         loi = lsm->lsm_oinfo[i];
                         if (!lov->lov_tgts[loi->loi_ost_idx])
                                 continue;
-                        if (lov->lov_tgts[loi->loi_ost_idx]->ltd_exp ==
-                            data->lock->l_conn_export &&
-                            osc_res_name_eq(loi->loi_id, loi->loi_gr, res_id)) {
-                                *stripe = i;
-                                GOTO(out, rc = 0);
-                        }
+                       if (lov->lov_tgts[loi->loi_ost_idx]->ltd_exp ==
+                           data->lock->l_conn_export &&
+                           ostid_res_name_eq(&loi->loi_oi, res_id)) {
+                               *stripe = i;
+                               GOTO(out, rc = 0);
+                       }
                 }
                 LDLM_ERROR(data->lock, "lock on inode without such object");
                 dump_lsm(D_ERROR, lsm);
@@ -2529,7 +2559,8 @@ static int lov_get_info(struct obd_export *exp, __u32 keylen,
                 if (!tgt || !tgt->ltd_active)
                         GOTO(out, rc = -ESRCH);
 
-                rc = obd_get_info(tgt->ltd_exp, keylen, key, &size, info->data, NULL);
+                rc = obd_get_info(env, tgt->ltd_exp, keylen, key,
+                                  &size, info->data, NULL);
                 GOTO(out, rc = 0);
         } else if (KEY_IS(KEY_LOVDESC)) {
                 struct lov_desc *desc_ret = val;
@@ -2539,6 +2570,22 @@ static int lov_get_info(struct obd_export *exp, __u32 keylen,
         } else if (KEY_IS(KEY_FIEMAP)) {
                 rc = lov_fiemap(lov, keylen, key, vallen, val, lsm);
                 GOTO(out, rc);
+        } else if (KEY_IS(KEY_CONNECT_FLAG)) {
+                struct lov_tgt_desc *tgt;
+                __u64 ost_idx = *((__u64*)val);
+
+                LASSERT(*vallen == sizeof(__u64));
+                LASSERT(ost_idx < lov->desc.ld_tgt_count);
+                tgt = lov->lov_tgts[ost_idx];
+
+                if (!tgt || !tgt->ltd_exp)
+                        GOTO(out, rc = -ESRCH);
+
+               *((__u64 *)val) = exp_connect_flags(tgt->ltd_exp);
+                GOTO(out, rc = 0);
+        } else if (KEY_IS(KEY_TGT_COUNT)) {
+                *((int *)val) = lov->desc.ld_tgt_count;
+                GOTO(out, rc = 0);
         }
 
         rc = -EINVAL;
@@ -2548,9 +2595,9 @@ out:
         RETURN(rc);
 }
 
-static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
-                              void *key, obd_count vallen, void *val,
-                              struct ptlrpc_request_set *set)
+static int lov_set_info_async(const struct lu_env *env, struct obd_export *exp,
+                              obd_count keylen, void *key, obd_count vallen,
+                              void *val, struct ptlrpc_request_set *set)
 {
         struct obd_device *obddev = class_exp2obd(exp);
         struct lov_obd *lov = &obddev->u.lov;
@@ -2587,7 +2634,11 @@ static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
                 mds_con = 1;
         } else if (KEY_IS(KEY_CAPA_KEY)) {
                 capa = 1;
-        }
+       } else if (KEY_IS(KEY_CACHE_SET)) {
+               LASSERT(lov->lov_cache == NULL);
+               lov->lov_cache = val;
+               do_inactive = 1;
+       }
 
         for (i = 0; i < count; i++, val = (char *)val + incr) {
                 if (next_id) {
@@ -2614,11 +2665,11 @@ static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
                                                 &tgt->ltd_uuid))
                                 continue;
 
-                        err = obd_set_info_async(tgt->ltd_exp,
+                        err = obd_set_info_async(env, tgt->ltd_exp,
                                          keylen, key, sizeof(int),
                                          &mgi->group, set);
                 } else if (next_id) {
-                        err = obd_set_info_async(tgt->ltd_exp,
+                        err = obd_set_info_async(env, tgt->ltd_exp,
                                          keylen, key, vallen,
                                          ((struct obd_id_info*)val)->data, set);
                 } else if (capa) {
@@ -2631,17 +2682,16 @@ static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
                             !obd_uuid_equals(info->uuid, &tgt->ltd_uuid))
                                 continue;
 
-                        err = obd_set_info_async(tgt->ltd_exp, keylen, key,
-                                                 sizeof(*info->capa),
+                        err = obd_set_info_async(env, tgt->ltd_exp, keylen,
+                                                 key, sizeof(*info->capa),
                                                  info->capa, set);
-                       
                 } else {
                         /* Only want a specific OSC */
                         if (check_uuid &&
                             !obd_uuid_equals(val, &tgt->ltd_uuid))
                                 continue;
 
-                        err = obd_set_info_async(tgt->ltd_exp,
+                        err = obd_set_info_async(env, tgt->ltd_exp,
                                          keylen, key, vallen, val, set);
                 }
 
@@ -2659,31 +2709,15 @@ static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
         RETURN(rc);
 }
 
-int lov_test_and_clear_async_rc(struct lov_stripe_md *lsm)
-{
-        int i, rc = 0;
-        ENTRY;
-
-        for (i = 0; i < lsm->lsm_stripe_count; i++) {
-                struct lov_oinfo *loi = lsm->lsm_oinfo[i];
-                if (loi->loi_ar.ar_rc && !rc)
-                        rc = loi->loi_ar.ar_rc;
-                loi->loi_ar.ar_rc = 0;
-        }
-        RETURN(rc);
-}
-EXPORT_SYMBOL(lov_test_and_clear_async_rc);
-
-
 static int lov_extent_calc(struct obd_export *exp, struct lov_stripe_md *lsm,
                            int cmd, __u64 *offset)
 {
         __u32 ssize = lsm->lsm_stripe_size;
         __u64 start;
 
-        start = *offset;
-        do_div(start, ssize);
-        start = start * ssize;
+       start = *offset;
+       lov_do_div64(start, ssize);
+       start = start * ssize;
 
         CDEBUG(D_DLMTRACE, "offset "LPU64", stripe %u, start "LPU64
                            ", end "LPU64"\n", *offset, ssize, start,
@@ -2701,21 +2735,126 @@ static int lov_extent_calc(struct obd_export *exp, struct lov_stripe_md *lsm,
 
 void lov_stripe_lock(struct lov_stripe_md *md)
 {
-        LASSERT(md->lsm_lock_owner != cfs_curproc_pid());
-        cfs_spin_lock(&md->lsm_lock);
-        LASSERT(md->lsm_lock_owner == 0);
-        md->lsm_lock_owner = cfs_curproc_pid();
+       LASSERT(md->lsm_lock_owner != current_pid());
+       spin_lock(&md->lsm_lock);
+       LASSERT(md->lsm_lock_owner == 0);
+       md->lsm_lock_owner = current_pid();
 }
 EXPORT_SYMBOL(lov_stripe_lock);
 
 void lov_stripe_unlock(struct lov_stripe_md *md)
 {
-        LASSERT(md->lsm_lock_owner == cfs_curproc_pid());
-        md->lsm_lock_owner = 0;
-        cfs_spin_unlock(&md->lsm_lock);
+       LASSERT(md->lsm_lock_owner == current_pid());
+       md->lsm_lock_owner = 0;
+       spin_unlock(&md->lsm_lock);
 }
 EXPORT_SYMBOL(lov_stripe_unlock);
 
+static int lov_quotactl(struct obd_device *obd, struct obd_export *exp,
+                        struct obd_quotactl *oqctl)
+{
+        struct lov_obd      *lov = &obd->u.lov;
+        struct lov_tgt_desc *tgt;
+        __u64                curspace = 0;
+        __u64                bhardlimit = 0;
+        int                  i, rc = 0;
+        ENTRY;
+
+        if (oqctl->qc_cmd != LUSTRE_Q_QUOTAON &&
+            oqctl->qc_cmd != LUSTRE_Q_QUOTAOFF &&
+            oqctl->qc_cmd != Q_GETOQUOTA &&
+            oqctl->qc_cmd != Q_INITQUOTA &&
+            oqctl->qc_cmd != LUSTRE_Q_SETQUOTA &&
+            oqctl->qc_cmd != Q_FINVALIDATE) {
+                CERROR("bad quota opc %x for lov obd", oqctl->qc_cmd);
+                RETURN(-EFAULT);
+        }
+
+        /* for lov tgt */
+        obd_getref(obd);
+        for (i = 0; i < lov->desc.ld_tgt_count; i++) {
+                int err;
+
+                tgt = lov->lov_tgts[i];
+
+                if (!tgt)
+                        continue;
+
+                if (!tgt->ltd_active || tgt->ltd_reap) {
+                        if (oqctl->qc_cmd == Q_GETOQUOTA &&
+                            lov->lov_tgts[i]->ltd_activate) {
+                                rc = -EREMOTEIO;
+                                CERROR("ost %d is inactive\n", i);
+                        } else {
+                                CDEBUG(D_HA, "ost %d is inactive\n", i);
+                        }
+                        continue;
+                }
+
+                err = obd_quotactl(tgt->ltd_exp, oqctl);
+                if (err) {
+                        if (tgt->ltd_active && !rc)
+                                rc = err;
+                        continue;
+                }
+
+                if (oqctl->qc_cmd == Q_GETOQUOTA) {
+                        curspace += oqctl->qc_dqblk.dqb_curspace;
+                        bhardlimit += oqctl->qc_dqblk.dqb_bhardlimit;
+                }
+        }
+        obd_putref(obd);
+
+        if (oqctl->qc_cmd == Q_GETOQUOTA) {
+                oqctl->qc_dqblk.dqb_curspace = curspace;
+                oqctl->qc_dqblk.dqb_bhardlimit = bhardlimit;
+        }
+        RETURN(rc);
+}
+
+static int lov_quotacheck(struct obd_device *obd, struct obd_export *exp,
+                          struct obd_quotactl *oqctl)
+{
+        struct lov_obd *lov = &obd->u.lov;
+        int             i, rc = 0;
+        ENTRY;
+
+        obd_getref(obd);
+
+        for (i = 0; i < lov->desc.ld_tgt_count; i++) {
+                if (!lov->lov_tgts[i])
+                        continue;
+
+                /* Skip quota check on the administratively disabled OSTs. */
+                if (!lov->lov_tgts[i]->ltd_activate) {
+                        CWARN("lov idx %d was administratively disabled, "
+                              "skip quotacheck on it.\n", i);
+                        continue;
+                }
+
+                if (!lov->lov_tgts[i]->ltd_active) {
+                        CERROR("lov idx %d inactive\n", i);
+                        rc = -EIO;
+                        goto out;
+                }
+        }
+
+        for (i = 0; i < lov->desc.ld_tgt_count; i++) {
+                int err;
+
+                if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_activate)
+                        continue;
+
+                err = obd_quotacheck(lov->lov_tgts[i]->ltd_exp, oqctl);
+                if (err && !rc)
+                        rc = err;
+        }
+
+out:
+        obd_putref(obd);
+
+        RETURN(rc);
+}
 
 struct obd_ops lov_obd_ops = {
         .o_owner               = THIS_MODULE,
@@ -2742,6 +2881,7 @@ struct obd_ops lov_obd_ops = {
         .o_sync                = lov_sync,
         .o_enqueue             = lov_enqueue,
         .o_change_cbdata       = lov_change_cbdata,
+        .o_find_cbdata         = lov_find_cbdata,
         .o_cancel              = lov_cancel,
         .o_cancel_unused       = lov_cancel_unused,
         .o_iocontrol           = lov_iocontrol,
@@ -2757,51 +2897,43 @@ struct obd_ops lov_obd_ops = {
         .o_pool_del            = lov_pool_del,
         .o_getref              = lov_getref,
         .o_putref              = lov_putref,
+        .o_quotactl            = lov_quotactl,
+        .o_quotacheck          = lov_quotacheck,
 };
 
-static quota_interface_t *quota_interface;
-extern quota_interface_t lov_quota_interface;
-
-cfs_mem_cache_t *lov_oinfo_slab;
+struct kmem_cache *lov_oinfo_slab;
 
 extern struct lu_kmem_descr lov_caches[];
 
 int __init lov_init(void)
 {
         struct lprocfs_static_vars lvars = { 0 };
-        int rc, rc2;
+       int rc;
         ENTRY;
 
         /* print an address of _any_ initialized kernel symbol from this
          * module, to allow debugging with gdb that doesn't support data
          * symbols from modules.*/
-        CDEBUG(D_CONSOLE, "Lustre LOV module (%p).\n", &lov_caches);
+        CDEBUG(D_INFO, "Lustre LOV module (%p).\n", &lov_caches);
 
         rc = lu_kmem_init(lov_caches);
         if (rc)
                 return rc;
 
-        lov_oinfo_slab = cfs_mem_cache_create("lov_oinfo",
-                                              sizeof(struct lov_oinfo),
-                                              0, CFS_SLAB_HWCACHE_ALIGN);
+       lov_oinfo_slab = kmem_cache_create("lov_oinfo",
+                                          sizeof(struct lov_oinfo), 0,
+                                          SLAB_HWCACHE_ALIGN, NULL);
         if (lov_oinfo_slab == NULL) {
                 lu_kmem_fini(lov_caches);
                 return -ENOMEM;
         }
         lprocfs_lov_init_vars(&lvars);
 
-        cfs_request_module("lquota");
-        quota_interface = PORTAL_SYMBOL_GET(lov_quota_interface);
-        init_obd_quota_ops(quota_interface, &lov_obd_ops);
-
         rc = class_register_type(&lov_obd_ops, NULL, lvars.module_vars,
                                  LUSTRE_LOV_NAME, &lov_device_type);
 
         if (rc) {
-                if (quota_interface)
-                        PORTAL_SYMBOL_PUT(lov_quota_interface);
-                rc2 = cfs_mem_cache_destroy(lov_oinfo_slab);
-                LASSERT(rc2 == 0);
+               kmem_cache_destroy(lov_oinfo_slab);
                 lu_kmem_fini(lov_caches);
         }
 
@@ -2811,17 +2943,9 @@ int __init lov_init(void)
 #ifdef __KERNEL__
 static void /*__exit*/ lov_exit(void)
 {
-        int rc;
-
-        lu_device_type_fini(&lov_device_type);
-        lu_kmem_fini(lov_caches);
-
-        if (quota_interface)
-                PORTAL_SYMBOL_PUT(lov_quota_interface);
-
-        class_unregister_type(LUSTRE_LOV_NAME);
-        rc = cfs_mem_cache_destroy(lov_oinfo_slab);
-        LASSERT(rc == 0);
+       class_unregister_type(LUSTRE_LOV_NAME);
+       kmem_cache_destroy(lov_oinfo_slab);
+       lu_kmem_fini(lov_caches);
 }
 
 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");