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b=20997 passthrough obd_force from lmv to mdc
[fs/lustre-release.git] / lustre / lov / lov_obd.c
index ca0f68c..c13ccaf 100644 (file)
@@ -26,7 +26,7 @@
  * 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.
  */
 /*
 
 #include "lov_internal.h"
 
-
 /* Keep a refcount of lov->tgt usage to prevent racing with addition/deletion.
    Any function that expects lov_tgts to remain stationary must take a ref. */
-void lov_getref(struct obd_device *obd)
+static void lov_getref(struct obd_device *obd)
 {
         struct lov_obd *lov = &obd->u.lov;
 
         /* nobody gets through here until lov_putref is done */
-        mutex_down(&lov->lov_lock);
-        atomic_inc(&lov->lov_refcount);
-        mutex_up(&lov->lov_lock);
+        cfs_mutex_down(&lov->lov_lock);
+        cfs_atomic_inc(&lov->lov_refcount);
+        cfs_mutex_up(&lov->lov_lock);
         return;
 }
 
-static void __lov_del_obd(struct obd_device *obd, __u32 index);
+static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt);
 
-void lov_putref(struct obd_device *obd)
+static void lov_putref(struct obd_device *obd)
 {
         struct lov_obd *lov = &obd->u.lov;
-        mutex_down(&lov->lov_lock);
+
+        cfs_mutex_down(&lov->lov_lock);
         /* ok to dec to 0 more than once -- ltd_exp's will be null */
-        if (atomic_dec_and_test(&lov->lov_refcount) && lov->lov_death_row) {
+        if (cfs_atomic_dec_and_test(&lov->lov_refcount) && lov->lov_death_row) {
+                CFS_LIST_HEAD(kill);
                 int i;
+                struct lov_tgt_desc *tgt, *n;
                 CDEBUG(D_CONFIG, "destroying %d lov targets\n",
                        lov->lov_death_row);
                 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
-                        if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_reap)
+                        tgt = lov->lov_tgts[i];
+
+                        if (!tgt || !tgt->ltd_reap)
                                 continue;
-                        /* Disconnect and delete from list */
-                        __lov_del_obd(obd, i);
+                        cfs_list_add(&tgt->ltd_kill, &kill);
+                        /* XXX - right now there is a dependency on ld_tgt_count
+                         * being the maximum tgt index for computing the
+                         * mds_max_easize. So we can't shrink it. */
+                        lov_ost_pool_remove(&lov->lov_packed, i);
+                        lov->lov_tgts[i] = NULL;
                         lov->lov_death_row--;
                 }
+                cfs_mutex_up(&lov->lov_lock);
+
+                cfs_list_for_each_entry_safe(tgt, n, &kill, ltd_kill) {
+                        cfs_list_del(&tgt->ltd_kill);
+                        /* Disconnect */
+                        __lov_del_obd(obd, tgt);
+                }
+        } else {
+                cfs_mutex_up(&lov->lov_lock);
         }
-        mutex_up(&lov->lov_lock);
 }
 
 static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid,
@@ -115,12 +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;
-        struct obd_uuid lov_osc_uuid = { "LOV_OSC_UUID" };
-        struct lustre_handle conn = {0, };
+        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
@@ -130,20 +144,17 @@ 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_obd = class_find_client_obd(&tgt_uuid, LUSTRE_OSC_NAME,
-                                        &obd->obd_uuid);
+        tgt_uuid = &lov->lov_tgts[index]->ltd_uuid;
+        tgt_obd = lov->lov_tgts[index]->ltd_obd;
 
-        if (!tgt_obd) {
-                CERROR("Target %s not attached\n", obd_uuid2str(&tgt_uuid));
-                RETURN(-EINVAL);
-        }
         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);
         }
 
+        /* override the sp_me from lov */
+        tgt_obd->u.cli.cl_sp_me = lov->lov_sp_me;
+
         if (data && (data->ocd_connect_flags & OBD_CONNECT_INDEX))
                 data->ocd_index = index;
 
@@ -159,68 +170,53 @@ int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
                 ptlrpc_activate_import(imp);
         }
 
+        rc = obd_register_observer(tgt_obd, obd);
+        if (rc) {
+                CERROR("Target %s register_observer error %d\n",
+                       obd_uuid2str(tgt_uuid), rc);
+                RETURN(rc);
+        }
+
+
         if (imp->imp_invalid) {
                 CERROR("not connecting OSC %s; administratively "
-                       "disabled\n", obd_uuid2str(&tgt_uuid));
-                rc = obd_register_observer(tgt_obd, obd);
-                if (rc) {
-                        CERROR("Target %s register_observer error %d; "
-                               "will not be able to reactivate\n",
-                               obd_uuid2str(&tgt_uuid), rc);
-                }
+                       "disabled\n", obd_uuid2str(tgt_uuid));
                 RETURN(0);
         }
 
-        rc = obd_connect(NULL, &conn, tgt_obd, &lov_osc_uuid, data, NULL);
-        if (rc) {
+        rc = obd_connect(NULL, &lov->lov_tgts[index]->ltd_exp, tgt_obd,
+                         &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);
-                RETURN(rc);
-        }
-        lov->lov_tgts[index]->ltd_exp = class_conn2export(&conn);
-        if (!lov->lov_tgts[index]->ltd_exp) {
-                CERROR("Target %s: null export!\n", obd_uuid2str(&tgt_uuid));
+                       obd_uuid2str(tgt_uuid), rc);
                 RETURN(-ENODEV);
         }
 
-        rc = obd_register_observer(tgt_obd, obd);
-        if (rc) {
-                CERROR("Target %s register_observer error %d\n",
-                       obd_uuid2str(&tgt_uuid), rc);
-                obd_disconnect(lov->lov_tgts[index]->ltd_exp);
-                lov->lov_tgts[index]->ltd_exp = NULL;
-                RETURN(rc);
-        }
-
         lov->lov_tgts[index]->ltd_reap = 0;
-        if (activate) {
-                lov->lov_tgts[index]->ltd_active = 1;
-                lov->desc.ld_active_tgt_count++;
-                lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 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 = class_conn2obd(&conn);
+                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);
                 }
         }
@@ -234,21 +230,24 @@ int lov_connect_obd(struct obd_device *obd, __u32 index, int activate,
 }
 
 static int lov_connect(const struct lu_env *env,
-                       struct lustre_handle *conn, struct obd_device *obd,
+                       struct obd_export **exp, struct obd_device *obd,
                        struct obd_uuid *cluuid, struct obd_connect_data *data,
                        void *localdata)
 {
         struct lov_obd *lov = &obd->u.lov;
         struct lov_tgt_desc *tgt;
+        struct lustre_handle conn;
         int i, rc;
         ENTRY;
 
         CDEBUG(D_CONFIG, "connect #%d\n", lov->lov_connects);
 
-        rc = class_connect(conn, obd, cluuid);
+        rc = class_connect(&conn, obd, cluuid);
         if (rc)
                 RETURN(rc);
 
+        *exp = class_conn2export(&conn);
+
         /* Why should there ever be more than 1 connect? */
         lov->lov_connects++;
         LASSERT(lov->lov_connects == 1);
@@ -257,7 +256,7 @@ static int lov_connect(const struct lu_env *env,
         if (data)
                 lov->lov_ocd = *data;
 
-        lov_getref(obd);
+        obd_getref(obd);
         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
                 tgt = lov->lov_tgts[i];
                 if (!tgt || obd_uuid_empty(&tgt->ltd_uuid))
@@ -274,37 +273,33 @@ static int lov_connect(const struct lu_env *env,
                         continue;
 
                 rc = lov_notify(obd, lov->lov_tgts[i]->ltd_exp->exp_obd,
-                                OBD_NOTIFY_ACTIVE, (void *)&i);
+                                OBD_NOTIFY_CONNECT, (void *)&i);
                 if (rc) {
                         CERROR("%s error sending notify %d\n",
                                obd->obd_name, rc);
                 }
         }
-        lov_putref(obd);
+        obd_putref(obd);
 
         RETURN(0);
 }
 
-static int lov_disconnect_obd(struct obd_device *obd, __u32 index)
+static int lov_disconnect_obd(struct obd_device *obd, struct lov_tgt_desc *tgt)
 {
         cfs_proc_dir_entry_t *lov_proc_dir;
         struct lov_obd *lov = &obd->u.lov;
         struct obd_device *osc_obd;
         int rc;
-
         ENTRY;
 
-        if (lov->lov_tgts[index] == NULL)
-                RETURN(-EINVAL);
-
-        osc_obd = class_exp2obd(lov->lov_tgts[index]->ltd_exp);
+        osc_obd = class_exp2obd(tgt->ltd_exp);
         CDEBUG(D_CONFIG, "%s: disconnecting target %s\n",
                obd->obd_name, osc_obd->obd_name);
 
-        if (lov->lov_tgts[index]->ltd_active) {
-                lov->lov_tgts[index]->ltd_active = 0;
+        if (tgt->ltd_active) {
+                tgt->ltd_active = 0;
                 lov->desc.ld_active_tgt_count--;
-                lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 1;
+                tgt->ltd_exp->exp_obd->obd_inactive = 1;
         }
 
         lov_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
@@ -333,16 +328,16 @@ static int lov_disconnect_obd(struct obd_device *obd, __u32 index)
 
         obd_register_observer(osc_obd, NULL);
 
-        rc = obd_disconnect(lov->lov_tgts[index]->ltd_exp);
+        rc = obd_disconnect(tgt->ltd_exp);
         if (rc) {
                 CERROR("Target %s disconnect error %d\n",
-                       lov_uuid2str(lov, index), rc);
+                       tgt->ltd_uuid.uuid, rc);
                 rc = 0;
         }
 
-        qos_del_tgt(obd, index);
+        qos_del_tgt(obd, tgt);
 
-        lov->lov_tgts[index]->ltd_exp = NULL;
+        tgt->ltd_exp = NULL;
         RETURN(0);
 }
 
@@ -366,7 +361,7 @@ static int lov_disconnect(struct obd_export *exp)
 
         /* Let's hold another reference so lov_del_obd doesn't spin through
            putref every time */
-        lov_getref(obd);
+        obd_getref(obd);
 
         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
                 if (lov->lov_tgts[i] && lov->lov_tgts[i]->ltd_exp) {
@@ -374,7 +369,7 @@ static int lov_disconnect(struct obd_export *exp)
                         lov_del_target(obd, i, 0, lov->lov_tgts[i]->ltd_gen);
                 }
         }
-        lov_putref(obd);
+        obd_putref(obd);
 
 out:
         rc = class_disconnect(exp); /* bz 9811 */
@@ -399,7 +394,7 @@ static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid,
         CDEBUG(D_INFO, "Searching in lov %p for uuid %s (activate=%d)\n",
                lov, uuid->uuid, activate);
 
-        lov_getref(obd);
+        obd_getref(obd);
         for (index = 0; index < lov->desc.ld_tgt_count; index++) {
                 tgt = lov->lov_tgts[index];
                 if (!tgt || !tgt->ltd_exp)
@@ -437,7 +432,7 @@ static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid,
         lov->lov_tgts[index]->ltd_qos.ltq_penalty = 0;
 
  out:
-        lov_putref(obd);
+        obd_putref(obd);
         RETURN(index);
 }
 
@@ -446,7 +441,7 @@ static int lov_notify(struct obd_device *obd, struct obd_device *watched,
 {
         int rc = 0;
         ENTRY;
-       
+
         if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
                 struct obd_uuid *uuid;
 
@@ -481,39 +476,44 @@ 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;
-                lov_getref(obd);
+                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;
 
-                        if ((ev == OBD_NOTIFY_SYNC) ||
-                            (ev == OBD_NOTIFY_SYNC_NONBLOCK))
-                                data = &i;
-
-                        tgt_obd = class_exp2obd(lov->lov_tgts[i]->ltd_exp);
+                        /* don't send sync event if target not
+                         * connected/activated */
+                        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);
                         }
                 }
-                lov_putref(obd);
+                obd_putref(obd);
         }
 
         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;
+        struct obd_device *tgt_obd;
         int rc;
         ENTRY;
 
@@ -526,13 +526,18 @@ int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
                 RETURN(-EINVAL);
         }
 
-        mutex_down(&lov->lov_lock);
+        tgt_obd = class_find_client_obd(uuidp, LUSTRE_OSC_NAME,
+                                        &obd->obd_uuid);
+        if (tgt_obd == NULL)
+                RETURN(-EINVAL);
+
+        cfs_mutex_down(&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);
-                mutex_up(&lov->lov_lock);
+                cfs_mutex_up(&lov->lov_lock);
                 RETURN(-EEXIST);
         }
 
@@ -546,7 +551,7 @@ int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
                         newsize = newsize << 1;
                 OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize);
                 if (newtgts == NULL) {
-                        mutex_up(&lov->lov_lock);
+                        cfs_mutex_up(&lov->lov_lock);
                         RETURN(-ENOMEM);
                 }
 
@@ -571,12 +576,19 @@ int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
 
         OBD_ALLOC_PTR(tgt);
         if (!tgt) {
-                mutex_up(&lov->lov_lock);
+                cfs_mutex_up(&lov->lov_lock);
                 RETURN(-ENOMEM);
         }
 
-        memset(tgt, 0, sizeof(*tgt));
+        rc = lov_ost_pool_add(&lov->lov_packed, index, lov->lov_tgt_size);
+        if (rc) {
+                cfs_mutex_up(&lov->lov_lock);
+                OBD_FREE_PTR(tgt);
+                RETURN(rc);
+        }
+
         tgt->ltd_uuid = *uuidp;
+        tgt->ltd_obd = tgt_obd;
         /* XXX - add a sanity check on the generation number. */
         tgt->ltd_gen = gen;
         tgt->ltd_index = index;
@@ -585,15 +597,13 @@ 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;
 
-        rc = lov_ost_pool_add(&lov->lov_packed, index, lov->lov_tgt_size);
-        if (rc)
-                RETURN(rc);
-
-        mutex_up(&lov->lov_lock);
+        cfs_mutex_up(&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,
@@ -601,7 +611,7 @@ int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
                 RETURN(0);
         }
 
-        lov_getref(obd);
+        obd_getref(obd);
 
         rc = lov_connect_obd(obd, index, active, &lov->lov_ocd);
         if (rc)
@@ -612,7 +622,7 @@ int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
                 GOTO(out, rc = 0);
 
         rc = lov_notify(obd, tgt->ltd_exp->exp_obd,
-                        active ? OBD_NOTIFY_ACTIVE : OBD_NOTIFY_INACTIVE,
+                        active ? OBD_NOTIFY_CONNECT : OBD_NOTIFY_INACTIVE,
                         (void *)&index);
 
 out:
@@ -621,7 +631,7 @@ out:
                        obd_uuid2str(&tgt->ltd_uuid));
                 lov_del_target(obd, index, 0, 0);
         }
-        lov_putref(obd);
+        obd_putref(obd);
         RETURN(rc);
 }
 
@@ -640,7 +650,7 @@ int lov_del_target(struct obd_device *obd, __u32 index,
                 RETURN(-EINVAL);
         }
 
-        lov_getref(obd);
+        obd_getref(obd);
 
         if (!lov->lov_tgts[index]) {
                 CERROR("LOV target at index %d is not setup.\n", index);
@@ -661,19 +671,16 @@ int lov_del_target(struct obd_device *obd, __u32 index,
 
         lov->lov_tgts[index]->ltd_reap = 1;
         lov->lov_death_row++;
-        /* we really delete it from lov_putref */
+        /* we really delete it from obd_putref */
 out:
-        lov_putref(obd);
+        obd_putref(obd);
 
         RETURN(rc);
 }
 
-/* We are holding lov_lock */
-static void __lov_del_obd(struct obd_device *obd, __u32 index)
+static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt)
 {
-        struct lov_obd *lov = &obd->u.lov;
         struct obd_device *osc_obd;
-        struct lov_tgt_desc *tgt = lov->lov_tgts[index];
 
         LASSERT(tgt);
         LASSERT(tgt->ltd_reap);
@@ -681,18 +688,12 @@ static void __lov_del_obd(struct obd_device *obd, __u32 index)
         osc_obd = class_exp2obd(tgt->ltd_exp);
 
         CDEBUG(D_CONFIG, "Removing tgt %s : %s\n",
-               lov_uuid2str(lov, index),
+               tgt->ltd_uuid.uuid,
                osc_obd ? osc_obd->obd_name : "<no obd>");
 
         if (tgt->ltd_exp)
-                lov_disconnect_obd(obd, index);
-
-        /* XXX - right now there is a dependency on ld_tgt_count being the
-         * maximum tgt index for computing the mds_max_easize. So we can't
-         * shrink it. */
+                lov_disconnect_obd(obd, tgt);
 
-        lov_ost_pool_remove(&lov->lov_packed, index);
-        lov->lov_tgts[index] = NULL;
         OBD_FREE_PTR(tgt);
 
         /* Manual cleanup - no cleanup logs to clean up the osc's.  We must
@@ -751,7 +752,6 @@ int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
         struct lprocfs_static_vars lvars = { 0 };
         struct lov_desc *desc;
         struct lov_obd *lov = &obd->u.lov;
-        int count;
         int rc;
         ENTRY;
 
@@ -782,43 +782,43 @@ int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 
         lov_fix_desc(desc);
 
-        /* Because of 64-bit divide/mod operations only work with a 32-bit
-         * divisor in a 32-bit kernel, we cannot support a stripe width
-         * of 4GB or larger on 32-bit CPUs. */
-        count = desc->ld_default_stripe_count;
-        if ((count > 0 ? count : desc->ld_tgt_count) *
-            desc->ld_default_stripe_size > 0xffffffff) {
-                CERROR("LOV: stripe width "LPU64"x%u > 4294967295 bytes\n",
-                       desc->ld_default_stripe_size, count);
-                RETURN(-EINVAL);
-        }
-
         desc->ld_active_tgt_count = 0;
         lov->desc = *desc;
         lov->lov_tgt_size = 0;
 
-        sema_init(&lov->lov_lock, 1);
-        atomic_set(&lov->lov_refcount, 0);
+        cfs_sema_init(&lov->lov_lock, 1);
+        cfs_atomic_set(&lov->lov_refcount, 0);
         CFS_INIT_LIST_HEAD(&lov->lov_qos.lq_oss_list);
-        init_rwsem(&lov->lov_qos.lq_rw_sem);
+        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;
-
-        lov->lov_pools_hash_body = lustre_hash_init("POOLS", 7, 7,
-                                                    &pool_hash_operations, 0);
+        /* 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);
+
+        lov->lov_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS,
+                                                   HASH_POOLS_MAX_BITS,
+                                                   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);
+                GOTO(out_free_statfs, 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);
-        }
+        if (rc)
+                GOTO(out_free_lov_packed, rc);
 
         lprocfs_lov_init_vars(&lvars);
         lprocfs_obd_setup(obd, lvars.obd_vars);
@@ -837,16 +837,23 @@ int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
                                                     NULL, NULL);
 
         RETURN(0);
+
+out_free_lov_packed:
+        lov_ost_pool_free(&lov->lov_packed);
+out_free_statfs:
+        OBD_FREE_PTR(lov->lov_qos.lq_statfs_data);
+        return rc;
 }
 
 static int lov_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
 {
         int rc = 0;
+        struct lov_obd *lov = &obd->u.lov;
+
         ENTRY;
 
         switch (stage) {
         case OBD_CLEANUP_EARLY: {
-                struct lov_obd *lov = &obd->u.lov;
                 int i;
                 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
                         if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active)
@@ -868,45 +875,48 @@ static int lov_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
 static int lov_cleanup(struct obd_device *obd)
 {
         struct lov_obd *lov = &obd->u.lov;
-        struct list_head *pos, *tmp;
+        cfs_list_t *pos, *tmp;
         struct pool_desc *pool;
 
-        lprocfs_obd_cleanup(obd);
-
-        list_for_each_safe(pos, tmp, &lov->lov_pool_list) {
-                pool = list_entry(pos, struct pool_desc, pool_list);
-                list_del(&pool->pool_list);
-                lov_ost_pool_free(&(pool->pool_rr.lqr_pool));
-                lov_ost_pool_free(&(pool->pool_obds));
-                OBD_FREE_PTR(pool);
+        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);
+                lov_pool_del(obd, pool->pool_name);
         }
+        cfs_hash_putref(lov->lov_pools_hash_body);
         lov_ost_pool_free(&(lov->lov_qos.lq_rr.lqr_pool));
         lov_ost_pool_free(&lov->lov_packed);
-        lustre_hash_exit(lov->lov_pools_hash_body);
 
         if (lov->lov_tgts) {
                 int i;
+                obd_getref(obd);
                 for (i = 0; i < lov->desc.ld_tgt_count; i++) {
                         if (!lov->lov_tgts[i])
                                 continue;
 
                         /* Inactive targets may never have connected */
                         if (lov->lov_tgts[i]->ltd_active ||
-                            atomic_read(&lov->lov_refcount))
+                            cfs_atomic_read(&lov->lov_refcount))
                             /* We should never get here - these
                                should have been removed in the
                              disconnect. */
                                 CERROR("lov tgt %d not cleaned!"
                                        " deathrow=%d, lovrc=%d\n",
                                        i, lov->lov_death_row,
-                                       atomic_read(&lov->lov_refcount));
+                                       cfs_atomic_read(&lov->lov_refcount));
                         lov_del_target(obd, i, 0, 0);
                 }
+                obd_putref(obd);
                 OBD_FREE(lov->lov_tgts, sizeof(*lov->lov_tgts) *
                          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);
 }
 
@@ -955,8 +965,8 @@ int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg,
 
                 rc = class_process_proc_param(PARAM_LOV, lvars.obd_vars,
                                               lcfg, obd);
-               if (rc > 0)
-                       rc = 0;
+                if (rc > 0)
+                        rc = 0;
                 GOTO(out, rc);
         }
         case LCFG_POOL_NEW:
@@ -976,7 +986,7 @@ out:
 }
 
 #ifndef log2
-#define log2(n) ffz(~(n))
+#define log2(n) cfs_ffz(~(n))
 #endif
 
 static int lov_clear_orphans(struct obd_export *export, struct obdo *src_oa,
@@ -1004,7 +1014,7 @@ static int lov_clear_orphans(struct obd_export *export, struct obdo *src_oa,
                        ost_uuid->uuid);
         }
 
-        lov_getref(export->exp_obd);
+        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;
@@ -1045,7 +1055,7 @@ static int lov_clear_orphans(struct obd_export *export, struct obdo *src_oa,
                 if (ost_uuid)
                         break;
         }
-        lov_putref(export->exp_obd);
+        obd_putref(export->exp_obd);
 
         OBDO_FREE(tmp_oa);
         RETURN(rc);
@@ -1099,8 +1109,7 @@ static int lov_create(struct obd_export *exp, struct obdo *src_oa,
         struct obd_info oinfo;
         struct lov_request_set *set = NULL;
         struct lov_request *req;
-        struct obd_statfs osfs;
-        __u64 maxage;
+        struct l_wait_info  lwi = { 0 };
         int rc = 0;
         ENTRY;
 
@@ -1118,7 +1127,7 @@ static int lov_create(struct obd_export *exp, struct obdo *src_oa,
         if (!lov->desc.ld_active_tgt_count)
                 RETURN(-EIO);
 
-        lov_getref(exp->exp_obd);
+        obd_getref(exp->exp_obd);
         /* Recreate a specific object id at the given OST index */
         if ((src_oa->o_valid & OBD_MD_FLFLAGS) &&
             (src_oa->o_flags & OBD_FL_RECREATE_OBJS)) {
@@ -1126,22 +1135,35 @@ static int lov_create(struct obd_export *exp, struct obdo *src_oa,
                  GOTO(out, rc);
         }
 
-        maxage = cfs_time_shift_64(-lov->desc.ld_qos_maxage);
-        obd_statfs_rqset(exp->exp_obd, &osfs, maxage, OBD_STATFS_NODELAY);
+        /* 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 +
+                                            OBD_STATFS_CACHE_SECONDS),
+                          0);
 
         rc = lov_prep_create_set(exp, &oinfo, ea, src_oa, oti, &set);
         if (rc)
                 GOTO(out, rc);
 
-        list_for_each_entry(req, &set->set_list, rq_link) {
+        cfs_list_for_each_entry(req, &set->set_list, rq_link) {
                 /* XXX: LOV STACKING: use real "obj_mdp" sub-data */
-                rc = obd_create(lov->lov_tgts[req->rq_idx]->ltd_exp,
-                                req->rq_oi.oi_oa, &req->rq_oi.oi_md, oti);
-                lov_update_create_set(set, req, rc);
+                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:
-        lov_putref(exp->exp_obd);
+        obd_putref(exp->exp_obd);
         RETURN(rc);
 }
 
@@ -1149,9 +1171,8 @@ out:
 do {                                                                            \
         LASSERT((lsmp) != NULL);                                                \
         LASSERTF(((lsmp)->lsm_magic == LOV_MAGIC_V1 ||                          \
-                 (lsmp)->lsm_magic == LOV_MAGIC_V3 ||                           \
-                 (lsmp)->lsm_magic == LOV_MAGIC_JOIN), "%p->lsm_magic=%x\n",    \
-                 (lsmp), (lsmp)->lsm_magic);                                    \
+                 (lsmp)->lsm_magic == LOV_MAGIC_V3),                            \
+                 "%p->lsm_magic=%x\n", (lsmp), (lsmp)->lsm_magic);              \
 } while (0)
 
 static int lov_destroy(struct obd_export *exp, struct obdo *oa,
@@ -1161,7 +1182,7 @@ static int lov_destroy(struct obd_export *exp, struct obdo *oa,
         struct lov_request_set *set;
         struct obd_info oinfo;
         struct lov_request *req;
-        struct list_head *pos;
+        cfs_list_t *pos;
         struct lov_obd *lov;
         int rc = 0, err = 0;
         ENTRY;
@@ -1177,13 +1198,13 @@ static int lov_destroy(struct obd_export *exp, struct obdo *oa,
         }
 
         lov = &exp->exp_obd->u.lov;
-        lov_getref(exp->exp_obd);
+        obd_getref(exp->exp_obd);
         rc = lov_prep_destroy_set(exp, &oinfo, oa, lsm, oti, &set);
         if (rc)
                 GOTO(out, rc);
 
-        list_for_each (pos, &set->set_list) {
-                req = list_entry(pos, struct lov_request, rq_link);
+        cfs_list_for_each (pos, &set->set_list) {
+                req = cfs_list_entry(pos, struct lov_request, rq_link);
 
                 if (oa->o_valid & OBD_MD_FLCOOKIE)
                         oti->oti_logcookies = set->set_cookies + req->rq_stripe;
@@ -1207,7 +1228,7 @@ static int lov_destroy(struct obd_export *exp, struct obdo *oa,
         }
         err = lov_fini_destroy_set(set);
 out:
-        lov_putref(exp->exp_obd);
+        obd_putref(exp->exp_obd);
         RETURN(rc ? rc : err);
 }
 
@@ -1215,7 +1236,7 @@ static int lov_getattr(struct obd_export *exp, struct obd_info *oinfo)
 {
         struct lov_request_set *set;
         struct lov_request *req;
-        struct list_head *pos;
+        cfs_list_t *pos;
         struct lov_obd *lov;
         int err = 0, rc = 0;
         ENTRY;
@@ -1232,8 +1253,8 @@ static int lov_getattr(struct obd_export *exp, struct obd_info *oinfo)
         if (rc)
                 RETURN(rc);
 
-        list_for_each (pos, &set->set_list) {
-                req = list_entry(pos, struct lov_request, rq_link);
+        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,
@@ -1276,7 +1297,7 @@ static int lov_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
 {
         struct lov_request_set *lovset;
         struct lov_obd *lov;
-        struct list_head *pos;
+        cfs_list_t *pos;
         struct lov_request *req;
         int rc = 0, err;
         ENTRY;
@@ -1297,8 +1318,8 @@ static int lov_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
                oinfo->oi_md->lsm_object_id, oinfo->oi_md->lsm_stripe_count,
                oinfo->oi_md->lsm_stripe_size);
 
-        list_for_each (pos, &lovset->set_list) {
-                req = list_entry(pos, struct lov_request, rq_link);
+        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,
@@ -1314,7 +1335,7 @@ static int lov_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
                 }
         }
 
-        if (!list_empty(&rqset->set_requests)) {
+        if (!cfs_list_empty(&rqset->set_requests)) {
                 LASSERT(rc == 0);
                 LASSERT (rqset->set_interpret == NULL);
                 rqset->set_interpret = lov_getattr_interpret;
@@ -1333,7 +1354,7 @@ static int lov_setattr(struct obd_export *exp, struct obd_info *oinfo,
 {
         struct lov_request_set *set;
         struct lov_obd *lov;
-        struct list_head *pos;
+        cfs_list_t *pos;
         struct lov_request *req;
         int err = 0, rc = 0;
         ENTRY;
@@ -1357,8 +1378,8 @@ static int lov_setattr(struct obd_export *exp, struct obd_info *oinfo,
         if (rc)
                 RETURN(rc);
 
-        list_for_each (pos, &set->set_list) {
-                req = list_entry(pos, struct lov_request, rq_link);
+        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);
@@ -1399,7 +1420,7 @@ static int lov_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
 {
         struct lov_request_set *set;
         struct lov_request *req;
-        struct list_head *pos;
+        cfs_list_t *pos;
         struct lov_obd *lov;
         int rc = 0;
         ENTRY;
@@ -1423,8 +1444,8 @@ static int lov_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
                oinfo->oi_md->lsm_object_id, oinfo->oi_md->lsm_stripe_count,
                oinfo->oi_md->lsm_stripe_size);
 
-        list_for_each (pos, &set->set_list) {
-                req = list_entry(pos, struct lov_request, rq_link);
+        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;
@@ -1446,7 +1467,7 @@ static int lov_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
         }
 
         /* If we are not waiting for responses on async requests, return. */
-        if (rc || !rqset || list_empty(&rqset->set_requests)) {
+        if (rc || !rqset || cfs_list_empty(&rqset->set_requests)) {
                 int err;
                 if (rc)
                         set->set_completes = 0;
@@ -1483,7 +1504,7 @@ static int lov_punch(struct obd_export *exp, struct obd_info *oinfo,
 {
         struct lov_request_set *set;
         struct lov_obd *lov;
-        struct list_head *pos;
+        cfs_list_t *pos;
         struct lov_request *req;
         int rc = 0;
         ENTRY;
@@ -1499,8 +1520,8 @@ static int lov_punch(struct obd_export *exp, struct obd_info *oinfo,
         if (rc)
                 RETURN(rc);
 
-        list_for_each (pos, &set->set_list) {
-                req = list_entry(pos, struct lov_request, rq_link);
+        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);
@@ -1513,7 +1534,7 @@ static int lov_punch(struct obd_export *exp, struct obd_info *oinfo,
                 }
         }
 
-        if (rc || list_empty(&rqset->set_requests)) {
+        if (rc || cfs_list_empty(&rqset->set_requests)) {
                 int err;
                 err = lov_fini_punch_set(set);
                 RETURN(rc ? rc : err);
@@ -1533,7 +1554,7 @@ static int lov_sync(struct obd_export *exp, struct obdo *oa,
         struct lov_request_set *set;
         struct obd_info oinfo;
         struct lov_obd *lov;
-        struct list_head *pos;
+        cfs_list_t *pos;
         struct lov_request *req;
         int err = 0, rc = 0;
         ENTRY;
@@ -1548,8 +1569,8 @@ static int lov_sync(struct obd_export *exp, struct obdo *oa,
         if (rc)
                 RETURN(rc);
 
-        list_for_each (pos, &set->set_list) {
-                req = list_entry(pos, struct lov_request, rq_link);
+        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,
@@ -1610,7 +1631,7 @@ static int lov_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
 {
         struct lov_request_set *set;
         struct lov_request *req;
-        struct list_head *pos;
+        cfs_list_t *pos;
         struct lov_obd *lov = &exp->exp_obd->u.lov;
         int err, rc = 0;
         ENTRY;
@@ -1626,10 +1647,10 @@ static int lov_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
         if (rc)
                 RETURN(rc);
 
-        list_for_each (pos, &set->set_list) {
+        cfs_list_for_each (pos, &set->set_list) {
                 struct obd_export *sub_exp;
                 struct brw_page *sub_pga;
-                req = list_entry(pos, struct lov_request, rq_link);
+                req = cfs_list_entry(pos, struct lov_request, rq_link);
 
                 sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp;
                 sub_pga = set->set_pga + req->rq_pgaidx;
@@ -1662,7 +1683,7 @@ static int lov_enqueue(struct obd_export *exp, struct obd_info *oinfo,
         ldlm_mode_t mode = einfo->ei_mode;
         struct lov_request_set *set;
         struct lov_request *req;
-        struct list_head *pos;
+        cfs_list_t *pos;
         struct lov_obd *lov;
         ldlm_error_t rc;
         ENTRY;
@@ -1682,8 +1703,8 @@ static int lov_enqueue(struct obd_export *exp, struct obd_info *oinfo,
         if (rc)
                 RETURN(rc);
 
-        list_for_each (pos, &set->set_list) {
-                req = list_entry(pos, struct lov_request, rq_link);
+        cfs_list_for_each (pos, &set->set_list) {
+                req = cfs_list_entry(pos, struct lov_request, rq_link);
 
                 rc = obd_enqueue(lov->lov_tgts[req->rq_idx]->ltd_exp,
                                  &req->rq_oi, einfo, rqset);
@@ -1691,7 +1712,7 @@ static int lov_enqueue(struct obd_export *exp, struct obd_info *oinfo,
                         GOTO(out, rc);
         }
 
-        if (rqset && !list_empty(&rqset->set_requests)) {
+        if (rqset && !cfs_list_empty(&rqset->set_requests)) {
                 LASSERT(rc == 0);
                 LASSERT(rqset->set_interpret == NULL);
                 rqset->set_interpret = lov_enqueue_interpret;
@@ -1716,8 +1737,6 @@ 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;
@@ -1728,8 +1747,9 @@ static int lov_change_cbdata(struct obd_export *exp,
                         continue;
                 }
 
+                LASSERT_SEQ_IS_MDT(loi->loi_seq);
                 submd.lsm_object_id = loi->loi_id;
-                submd.lsm_object_gr = lsm->lsm_object_gr;
+                submd.lsm_object_seq = loi->loi_seq;
                 submd.lsm_stripe_count = 0;
                 rc = obd_change_cbdata(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
                                        &submd, it, data);
@@ -1737,14 +1757,53 @@ static int lov_change_cbdata(struct obd_export *exp,
         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;
+                }
+
+                LASSERT_SEQ_IS_MDT(loi->loi_seq);
+                submd.lsm_object_id = loi->loi_id;
+                submd.lsm_object_seq = loi->loi_seq;
+                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,
                       __u32 mode, struct lustre_handle *lockh)
 {
         struct lov_request_set *set;
         struct obd_info oinfo;
         struct lov_request *req;
-        struct list_head *pos;
-        struct lov_obd *lov = &exp->exp_obd->u.lov;
+        cfs_list_t *pos;
+        struct lov_obd *lov;
         struct lustre_handle *lov_lockhp;
         int err = 0, rc = 0;
         ENTRY;
@@ -1754,15 +1813,15 @@ 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_SEQ_IS_MDT(lsm->lsm_object_seq);
         LASSERT(lockh);
         lov = &exp->exp_obd->u.lov;
         rc = lov_prep_cancel_set(exp, &oinfo, lsm, mode, lockh, &set);
         if (rc)
                 RETURN(rc);
 
-        list_for_each (pos, &set->set_list) {
-                req = list_entry(pos, struct lov_request, rq_link);
+        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,
@@ -1784,7 +1843,7 @@ static int lov_cancel(struct obd_export *exp, struct lov_stripe_md *lsm,
 
 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;
@@ -1810,7 +1869,7 @@ static int lov_cancel_unused(struct obd_export *exp,
 
         ASSERT_LSM_MAGIC(lsm);
 
-        LASSERT_MDS_GROUP(lsm->lsm_object_gr);
+        LASSERT_SEQ_IS_MDT(lsm->lsm_object_seq);
         for (i = 0; i < lsm->lsm_stripe_count; i++) {
                 struct lov_stripe_md submd;
                 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
@@ -1825,7 +1884,7 @@ static int lov_cancel_unused(struct obd_export *exp,
                         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_object_seq = loi->loi_seq;
                 submd.lsm_stripe_count = 0;
                 err = obd_cancel_unused(lov->lov_tgts[loi->loi_ost_idx]->ltd_exp,
                                         &submd, flags, opaque);
@@ -1840,8 +1899,7 @@ static int lov_cancel_unused(struct obd_export *exp,
         RETURN(rc);
 }
 
-static int lov_statfs_interpret(struct ptlrpc_request_set *rqset,
-                                void *data, int rc)
+int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc)
 {
         struct lov_request_set *lovset = (struct lov_request_set *)data;
         int err;
@@ -1859,7 +1917,7 @@ static int lov_statfs_async(struct obd_device *obd, struct obd_info *oinfo,
 {
         struct lov_request_set *set;
         struct lov_request *req;
-        struct list_head *pos;
+        cfs_list_t *pos;
         struct lov_obd *lov;
         int rc = 0;
         ENTRY;
@@ -1872,10 +1930,10 @@ static int lov_statfs_async(struct obd_device *obd, struct obd_info *oinfo,
         if (rc)
                 RETURN(rc);
 
-        list_for_each (pos, &set->set_list) {
+        cfs_list_for_each (pos, &set->set_list) {
                 struct obd_device *osc_obd;
 
-                req = list_entry(pos, struct lov_request, rq_link);
+                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);
@@ -1883,7 +1941,7 @@ static int lov_statfs_async(struct obd_device *obd, struct obd_info *oinfo,
                         break;
         }
 
-        if (rc || list_empty(&rqset->set_requests)) {
+        if (rc || cfs_list_empty(&rqset->set_requests)) {
                 int err;
                 if (rc)
                         set->set_completes = 0;
@@ -1939,8 +1997,6 @@ static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
                 __u32 index;
 
                 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
-                LASSERT(data->ioc_plen1 == sizeof(struct obd_statfs));
-
                 if ((index >= count))
                         RETURN(-ENODEV);
 
@@ -1954,16 +2010,21 @@ static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
                 if (!osc_obd)
                         RETURN(-EINVAL);
 
+                /* copy UUID */
+                if (cfs_copy_to_user(data->ioc_pbuf2, obd2cli_tgt(osc_obd),
+                                     min((int) data->ioc_plen2,
+                                         (int) sizeof(struct obd_uuid))))
+                        RETURN(-EFAULT);
+
                 /* got statfs data */
                 rc = obd_statfs(osc_obd, &stat_buf,
-                                cfs_time_current_64() - HZ, 0);
+                                cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
+                                0);
                 if (rc)
                         RETURN(rc);
-                if (copy_to_user(data->ioc_pbuf1, &stat_buf, data->ioc_plen1))
-                        RETURN(-EFAULT);
-                /* copy UUID */
-                if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(osc_obd),
-                                 data->ioc_plen2))
+                if (cfs_copy_to_user(data->ioc_pbuf1, &stat_buf,
+                                     min((int) data->ioc_plen1,
+                                         (int) sizeof(stat_buf))))
                         RETURN(-EFAULT);
                 break;
         }
@@ -2007,13 +2068,13 @@ static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
                         *genp = lov->lov_tgts[i]->ltd_gen;
                 }
 
-                if (copy_to_user((void *)uarg, buf, len))
+                if (cfs_copy_to_user((void *)uarg, buf, len))
                         rc = -EFAULT;
                 obd_ioctl_freedata(buf, len);
                 break;
         }
         case LL_IOC_LOV_SETSTRIPE:
-                rc = lov_setstripe(exp, karg, uarg);
+                rc = lov_setstripe(exp, len, karg, uarg);
                 break;
         case LL_IOC_LOV_GETSTRIPE:
                 rc = lov_getstripe(exp, karg, uarg);
@@ -2076,11 +2137,16 @@ 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) {
@@ -2354,13 +2420,14 @@ static int lov_fiemap(struct lov_obd *lov, __u32 keylen, void *key,
                         fm_local->fm_flags = fiemap->fm_flags;
 
                         fm_key->oa.o_id = lsm->lsm_oinfo[cur_stripe]->loi_id;
+                        fm_key->oa.o_seq = lsm->lsm_oinfo[cur_stripe]->loi_seq;
                         ost_index = lsm->lsm_oinfo[cur_stripe]->loi_ost_idx;
 
                         if (ost_index < 0 || ost_index >=lov->desc.ld_tgt_count)
                                 GOTO(out, rc = -EINVAL);
 
                         /* If OST is inactive, return extent with UNKNOWN flag */
-                        if (lov && !lov->lov_tgts[ost_index]->ltd_active) {
+                        if (!lov->lov_tgts[ost_index]->ltd_active) {
                                 fm_local->fm_flags |= FIEMAP_EXTENT_LAST;
                                 fm_local->fm_mapped_extents = 1;
 
@@ -2472,7 +2539,7 @@ static int lov_get_info(struct obd_export *exp, __u32 keylen,
         if (!vallen || !val)
                 RETURN(-EFAULT);
 
-        lov_getref(obddev);
+        obd_getref(obddev);
 
         if (KEY_IS(KEY_LOCK_TO_STRIPE)) {
                 struct {
@@ -2499,7 +2566,7 @@ static int lov_get_info(struct obd_export *exp, __u32 keylen,
                                 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)) {
+                            osc_res_name_eq(loi->loi_id, loi->loi_seq, res_id)) {
                                 *stripe = i;
                                 GOTO(out, rc = 0);
                         }
@@ -2528,12 +2595,25 @@ 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) = tgt->ltd_exp->exp_connect_flags;
+                GOTO(out, rc = 0);
         }
 
         rc = -EINVAL;
 
 out:
-        lov_putref(obddev);
+        obd_putref(obddev);
         RETURN(rc);
 }
 
@@ -2548,7 +2628,7 @@ static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
         struct lov_tgt_desc *tgt;
         unsigned incr, check_uuid,
                  do_inactive, no_set;
-        unsigned next_id = 0,  mds_con = 0;
+        unsigned next_id = 0,  mds_con = 0, capa = 0;
         ENTRY;
 
         incr = check_uuid = do_inactive = no_set = 0;
@@ -2559,7 +2639,7 @@ static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
                         RETURN(-ENOMEM);
         }
 
-        lov_getref(obddev);
+        obd_getref(obddev);
         count = lov->desc.ld_tgt_count;
 
         if (KEY_IS(KEY_NEXT_ID)) {
@@ -2570,12 +2650,12 @@ static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
                 next_id = 1;
         } else if (KEY_IS(KEY_CHECKSUM)) {
                 do_inactive = 1;
-        } else if (KEY_IS(KEY_UNLINKED)) {
-                check_uuid = val ? 1 : 0;
         } else if (KEY_IS(KEY_EVICT_BY_NID)) {
                 /* use defaults:  do_inactive = incr = 0; */
         } else if (KEY_IS(KEY_MDS_CONN)) {
                 mds_con = 1;
+        } else if (KEY_IS(KEY_CAPA_KEY)) {
+                capa = 1;
         }
 
         for (i = 0; i < count; i++, val = (char *)val + incr) {
@@ -2610,7 +2690,21 @@ static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
                         err = obd_set_info_async(tgt->ltd_exp,
                                          keylen, key, vallen,
                                          ((struct obd_id_info*)val)->data, set);
-                } else  {
+                } else if (capa) {
+                        struct mds_capa_info *info = (struct mds_capa_info*)val;
+
+                        LASSERT(vallen == sizeof(*info));
+
+                         /* Only want a specific OSC */
+                        if (info->uuid &&
+                            !obd_uuid_equals(info->uuid, &tgt->ltd_uuid))
+                                continue;
+
+                        err = obd_set_info_async(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))
@@ -2624,7 +2718,7 @@ static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
                         rc = err;
         }
 
-        lov_putref(obddev);
+        obd_putref(obddev);
         if (no_set) {
                 err = ptlrpc_set_wait(set);
                 if (!rc)
@@ -2634,21 +2728,6 @@ static int lov_set_info_async(struct obd_export *exp, obd_count keylen,
         RETURN(rc);
 }
 
-static int lov_checkmd(struct obd_export *exp, struct obd_export *md_exp,
-                       struct lov_stripe_md *lsm)
-{
-        int rc;
-        ENTRY;
-
-        if (!lsm)
-                RETURN(0);
-        LASSERT(md_exp);
-        LASSERT(lsm_op_find(lsm->lsm_magic) != NULL);
-        rc = lsm_op_find(lsm->lsm_magic)->lsm_revalidate(lsm, md_exp->exp_obd);
-
-        RETURN(rc);
-}
-
 int lov_test_and_clear_async_rc(struct lov_stripe_md *lsm)
 {
         int i, rc = 0;
@@ -2689,99 +2768,10 @@ static int lov_extent_calc(struct obd_export *exp, struct lov_stripe_md *lsm,
         RETURN(0);
 }
 
-
-#if 0
-struct lov_multi_wait {
-        struct ldlm_lock *lock;
-        wait_queue_t      wait;
-        int               completed;
-        int               generation;
-};
-
-int lov_complete_many(struct obd_export *exp, struct lov_stripe_md *lsm,
-                      struct lustre_handle *lockh)
-{
-        struct lov_lock_handles *lov_lockh = NULL;
-        struct lustre_handle *lov_lockhp;
-        struct lov_obd *lov;
-        struct lov_oinfo *loi;
-        struct lov_multi_wait *queues;
-        int rc = 0, i;
-        ENTRY;
-
-        ASSERT_LSM_MAGIC(lsm);
-
-        if (!exp || !exp->exp_obd)
-                RETURN(-ENODEV);
-
-        LASSERT(lockh != NULL);
-        if (lsm->lsm_stripe_count > 1) {
-                lov_lockh = lov_handle2llh(lockh);
-                if (lov_lockh == NULL) {
-                        CERROR("LOV: invalid lov lock handle %p\n", lockh);
-                        RETURN(-EINVAL);
-                }
-
-                lov_lockhp = lov_lockh->llh_handles;
-        } else {
-                lov_lockhp = lockh;
-        }
-
-        OBD_ALLOC(queues, lsm->lsm_stripe_count * sizeof(*queues));
-        if (queues == NULL)
-                GOTO(out, rc = -ENOMEM);
-
-        lov = &exp->exp_obd->u.lov;
-        for (i = 0, loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count;
-             i++, loi++, lov_lockhp++) {
-                struct ldlm_lock *lock;
-                struct obd_device *obd;
-
-                lock = ldlm_handle2lock_long(lov_lockhp, 0);
-                if (lock == NULL) {
-                        CDEBUG(D_HA, "lov idx %d subobj "LPX64" no lock?\n",
-                               loi->loi_ost_idx, loi->loi_id);
-                        queues[i].completed = 1;
-                        continue;
-                }
-
-                queues[i].lock = lock;
-                init_waitqueue_entry(&(queues[i].wait), current);
-                add_wait_queue(lock->l_waitq, &(queues[i].wait));
-
-                obd = class_exp2obd(lock->l_conn_export);
-                if (obd != NULL)
-                        imp = obd->u.cli.cl_import;
-                if (imp != NULL) {
-                        spin_lock(&imp->imp_lock);
-                        queues[i].generation = imp->imp_generation;
-                        spin_unlock(&imp->imp_lock);
-                }
-        }
-
-        lwi = LWI_TIMEOUT_INTR(obd_timeout * HZ, ldlm_expired_completion_wait,
-                               interrupted_completion_wait, &lwd);
-        rc = l_wait_event_added(check_multi_complete(queues, lsm), &lwi);
-
-        for (i = 0; i < lsm->lsm_stripe_count; i++)
-                remove_wait_queue(lock->l_waitq, &(queues[i].wait));
-
-        if (rc == -EINTR || rc == -ETIMEDOUT) {
-
-
-        }
-
- out:
-        if (lov_lockh != NULL)
-                lov_llh_put(lov_lockh);
-        RETURN(rc);
-}
-#endif
-
 void lov_stripe_lock(struct lov_stripe_md *md)
 {
         LASSERT(md->lsm_lock_owner != cfs_curproc_pid());
-        spin_lock(&md->lsm_lock);
+        cfs_spin_lock(&md->lsm_lock);
         LASSERT(md->lsm_lock_owner == 0);
         md->lsm_lock_owner = cfs_curproc_pid();
 }
@@ -2791,7 +2781,7 @@ void lov_stripe_unlock(struct lov_stripe_md *md)
 {
         LASSERT(md->lsm_lock_owner == cfs_curproc_pid());
         md->lsm_lock_owner = 0;
-        spin_unlock(&md->lsm_lock);
+        cfs_spin_unlock(&md->lsm_lock);
 }
 EXPORT_SYMBOL(lov_stripe_unlock);
 
@@ -2808,7 +2798,6 @@ struct obd_ops lov_obd_ops = {
         .o_statfs_async        = lov_statfs_async,
         .o_packmd              = lov_packmd,
         .o_unpackmd            = lov_unpackmd,
-        .o_checkmd             = lov_checkmd,
         .o_create              = lov_create,
         .o_destroy             = lov_destroy,
         .o_getattr             = lov_getattr,
@@ -2822,6 +2811,7 @@ 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,
@@ -2835,6 +2825,8 @@ struct obd_ops lov_obd_ops = {
         .o_pool_rem            = lov_pool_remove,
         .o_pool_add            = lov_pool_add,
         .o_pool_del            = lov_pool_del,
+        .o_getref              = lov_getref,
+        .o_putref              = lov_putref,
 };
 
 static quota_interface_t *quota_interface;
@@ -2861,14 +2853,14 @@ int __init lov_init(void)
 
         lov_oinfo_slab = cfs_mem_cache_create("lov_oinfo",
                                               sizeof(struct lov_oinfo),
-                                              0, SLAB_HWCACHE_ALIGN);
+                                              0, CFS_SLAB_HWCACHE_ALIGN);
         if (lov_oinfo_slab == NULL) {
                 lu_kmem_fini(lov_caches);
                 return -ENOMEM;
         }
         lprocfs_lov_init_vars(&lvars);
 
-        request_module("lquota");
+        cfs_request_module("lquota");
         quota_interface = PORTAL_SYMBOL_GET(lov_quota_interface);
         init_obd_quota_ops(quota_interface, &lov_obd_ops);