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LU-12616 obclass: fix MDS start/stop race
[fs/lustre-release.git] / lustre / osp / osp_dev.c
index 06d6e4d..dc3249b 100644 (file)
  *
  * You should have received a copy of the GNU General Public License
  * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -27,7 +23,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2012, 2015, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
 #define DEBUG_SUBSYSTEM S_MDS
 
 #include <linux/kthread.h>
-#include <obd_class.h>
-#include <lustre_ioctl.h>
-#include <lustre_param.h>
+
+#include <uapi/linux/lustre/lustre_ioctl.h>
 #include <lustre_log.h>
+#include <lustre_obdo.h>
+#include <uapi/linux/lustre/lustre_param.h>
+#include <obd_class.h>
 
 #include "osp_internal.h"
 
@@ -185,7 +183,7 @@ static struct dt_object
        if (rc) {
                CERROR("%s: can't be initialized: rc = %d\n",
                       osp->opd_obd->obd_name, rc);
-               lu_object_put(env, &dto->do_lu);
+               dt_object_put(env, dto);
                RETURN(ERR_PTR(rc));
        }
        RETURN(dto);
@@ -213,6 +211,9 @@ static int osp_write_local_file(const struct lu_env *env,
        struct thandle *th;
        int rc;
 
+       if (osp->opd_storage->dd_rdonly)
+               RETURN(0);
+
        th = dt_trans_create(env, osp->opd_storage);
        if (IS_ERR(th))
                RETURN(PTR_ERR(th));
@@ -257,20 +258,23 @@ static int osp_init_last_objid(const struct lu_env *env, struct osp_device *osp)
        if (IS_ERR(dto))
                RETURN(PTR_ERR(dto));
 
+       osp_objid_buf_prep(&osi->osi_lb, &osi->osi_off, &osp->opd_last_id,
+                          osp->opd_index);
+
        /* object will be released in device cleanup path */
-       if (osi->osi_attr.la_size >=
-           sizeof(osi->osi_id) * (osp->opd_index + 1)) {
-               osp_objid_buf_prep(&osi->osi_lb, &osi->osi_off, &fid->f_oid,
-                                  osp->opd_index);
+       if (osi->osi_attr.la_size >= (osi->osi_off + osi->osi_lb.lb_len)) {
                rc = dt_record_read(env, dto, &osi->osi_lb, &osi->osi_off);
                if (rc != 0 && rc != -EFAULT)
                        GOTO(out, rc);
+               /* In case of idif bits 32-48 go to f_seq
+                * (see osp_init_last_seq). So don't care
+                * about u64->u32 convertion. */
+               fid->f_oid = osp->opd_last_id;
        }
 
        if (rc == -EFAULT) { /* fresh LAST_ID */
+               osp->opd_last_id = 0;
                fid->f_oid = 0;
-               osp_objid_buf_prep(&osi->osi_lb, &osi->osi_off, &fid->f_oid,
-                                  osp->opd_index);
                rc = osp_write_local_file(env, osp, dto, &osi->osi_lb,
                                          osi->osi_off);
                if (rc != 0)
@@ -282,7 +286,7 @@ out:
        /* object will be released in device cleanup path */
        CERROR("%s: can't initialize lov_objid: rc = %d\n",
               osp->opd_obd->obd_name, rc);
-       lu_object_put(env, &dto->do_lu);
+       dt_object_put(env, dto);
        osp->opd_last_used_oid_file = NULL;
        RETURN(rc);
 }
@@ -314,20 +318,21 @@ static int osp_init_last_seq(const struct lu_env *env, struct osp_device *osp)
        if (IS_ERR(dto))
                RETURN(PTR_ERR(dto));
 
+       osp_objseq_buf_prep(&osi->osi_lb, &osi->osi_off, &fid->f_seq,
+                          osp->opd_index);
+
        /* object will be released in device cleanup path */
-       if (osi->osi_attr.la_size >=
-           sizeof(osi->osi_id) * (osp->opd_index + 1)) {
-               osp_objseq_buf_prep(&osi->osi_lb, &osi->osi_off, &fid->f_seq,
-                                  osp->opd_index);
+       if (osi->osi_attr.la_size >= (osi->osi_off + osi->osi_lb.lb_len)) {
                rc = dt_record_read(env, dto, &osi->osi_lb, &osi->osi_off);
                if (rc != 0 && rc != -EFAULT)
                        GOTO(out, rc);
+               if (fid_is_idif(fid))
+                       fid->f_seq = fid_idif_seq(osp->opd_last_id,
+                                                 osp->opd_index);
        }
 
        if (rc == -EFAULT) { /* fresh OSP */
                fid->f_seq = 0;
-               osp_objseq_buf_prep(&osi->osi_lb, &osi->osi_off, &fid->f_seq,
-                                   osp->opd_index);
                rc = osp_write_local_file(env, osp, dto, &osi->osi_lb,
                                          osi->osi_off);
                if (rc != 0)
@@ -339,7 +344,7 @@ out:
        /* object will be released in device cleanup path */
        CERROR("%s: can't initialize lov_seq: rc = %d\n",
               osp->opd_obd->obd_name, rc);
-       lu_object_put(env, &dto->do_lu);
+       dt_object_put(env, dto);
        osp->opd_last_used_seq_file = NULL;
        RETURN(rc);
 }
@@ -373,7 +378,7 @@ static int osp_last_used_init(const struct lu_env *env, struct osp_device *osp)
 
        rc = osp_init_last_seq(env, osp);
        if (rc < 0) {
-               CERROR("%s: Can not get ids %d from old objid!\n",
+               CERROR("%s: Can not get sequence %d from old objseq!\n",
                       osp->opd_obd->obd_name, rc);
                GOTO(out, rc);
        }
@@ -404,16 +409,17 @@ static int osp_last_used_init(const struct lu_env *env, struct osp_device *osp)
                GOTO(out, rc = -EINVAL);
        }
 
+       osp_fid_to_obdid(&osp->opd_last_used_fid, &osp->opd_last_id);
        CDEBUG(D_INFO, "%s: Init last used fid "DFID"\n",
               osp->opd_obd->obd_name, PFID(&osp->opd_last_used_fid));
 out:
        if (rc != 0) {
                if (osp->opd_last_used_oid_file != NULL) {
-                       lu_object_put(env, &osp->opd_last_used_oid_file->do_lu);
+                       dt_object_put(env, osp->opd_last_used_oid_file);
                        osp->opd_last_used_oid_file = NULL;
                }
                if (osp->opd_last_used_seq_file != NULL) {
-                       lu_object_put(env, &osp->opd_last_used_seq_file->do_lu);
+                       dt_object_put(env, osp->opd_last_used_seq_file);
                        osp->opd_last_used_seq_file = NULL;
                }
        }
@@ -431,12 +437,12 @@ static void osp_last_used_fini(const struct lu_env *env, struct osp_device *osp)
 {
        /* release last_used file */
        if (osp->opd_last_used_oid_file != NULL) {
-               lu_object_put(env, &osp->opd_last_used_oid_file->do_lu);
+               dt_object_put(env, osp->opd_last_used_oid_file);
                osp->opd_last_used_oid_file = NULL;
        }
 
        if (osp->opd_last_used_seq_file != NULL) {
-               lu_object_put(env, &osp->opd_last_used_seq_file->do_lu);
+               dt_object_put(env, osp->opd_last_used_seq_file);
                osp->opd_last_used_seq_file = NULL;
        }
 }
@@ -453,10 +459,11 @@ static void osp_last_used_fini(const struct lu_env *env, struct osp_device *osp)
  */
 static int osp_disconnect(struct osp_device *d)
 {
+       struct obd_device *obd = d->opd_obd;
        struct obd_import *imp;
        int rc = 0;
 
-       imp = d->opd_obd->u.cli.cl_import;
+       imp = obd->u.cli.cl_import;
 
        /* Mark import deactivated now, so we don't try to reconnect if any
         * of the cleanup RPCs fails (e.g. ldlm cancel, etc).  We don't
@@ -475,8 +482,7 @@ static int osp_disconnect(struct osp_device *d)
 
        rc = ptlrpc_disconnect_import(imp, 0);
        if (rc != 0)
-               CERROR("%s: can't disconnect: rc = %d\n",
-                      d->opd_obd->obd_name, rc);
+               CERROR("%s: can't disconnect: rc = %d\n", obd->obd_name, rc);
 
        ptlrpc_invalidate_import(imp);
 
@@ -502,6 +508,9 @@ static int osp_update_init(struct osp_device *osp)
 
        LASSERT(osp->opd_connect_mdt);
 
+       if (osp->opd_storage->dd_rdonly)
+               RETURN(0);
+
        OBD_ALLOC_PTR(osp->opd_update);
        if (osp->opd_update == NULL)
                RETURN(-ENOMEM);
@@ -512,6 +521,7 @@ static int osp_update_init(struct osp_device *osp)
        INIT_LIST_HEAD(&osp->opd_update->ou_list);
        osp->opd_update->ou_rpc_version = 1;
        osp->opd_update->ou_version = 1;
+       osp->opd_update->ou_generation = 0;
 
        /* start thread handling sending updates to the remote MDT */
        task = kthread_run(osp_send_update_thread, osp,
@@ -564,7 +574,7 @@ static void osp_update_fini(const struct lu_env *env, struct osp_device *osp)
                LASSERT(our->our_th != NULL);
                osp_trans_callback(env, our->our_th, -EIO);
                /* our will be destroyed in osp_thandle_put() */
-               osp_thandle_put(our->our_th);
+               osp_thandle_put(env, our->our_th);
        }
        spin_unlock(&ou->ou_lock);
 
@@ -591,6 +601,8 @@ static int osp_shutdown(const struct lu_env *env, struct osp_device *d)
 
        rc = osp_disconnect(d);
 
+       osp_statfs_fini(d);
+
        if (!d->opd_connect_mdt) {
                /* stop sync thread */
                osp_sync_fini(d);
@@ -624,9 +636,11 @@ static int osp_shutdown(const struct lu_env *env, struct osp_device *d)
 static int osp_process_config(const struct lu_env *env,
                              struct lu_device *dev, struct lustre_cfg *lcfg)
 {
-       struct osp_device               *d = lu2osp_dev(dev);
-       struct obd_device               *obd = d->opd_obd;
-       int                              rc;
+       struct osp_device *d = lu2osp_dev(dev);
+       struct dt_device *dt = lu2dt_dev(dev);
+       struct obd_device *obd = d->opd_obd;
+       ssize_t count;
+       int rc;
 
        ENTRY;
 
@@ -634,28 +648,28 @@ static int osp_process_config(const struct lu_env *env,
        case LCFG_PRE_CLEANUP:
                rc = osp_disconnect(d);
                osp_update_fini(env, d);
+               if (obd->obd_namespace != NULL)
+                       ldlm_namespace_free_prior(obd->obd_namespace, NULL, 1);
                break;
        case LCFG_CLEANUP:
                lu_dev_del_linkage(dev->ld_site, dev);
                rc = osp_shutdown(env, d);
                break;
        case LCFG_PARAM:
-               LASSERT(obd);
-               rc = class_process_proc_param(d->opd_connect_mdt ?
-                                             PARAM_OSP : PARAM_OSC,
-                                             obd->obd_vars, lcfg, obd);
-               if (rc > 0)
-                       rc = 0;
-               if (rc == -ENOSYS) {
-                       /* class_process_proc_param() haven't found matching
-                        * parameter and returned ENOSYS so that layer(s)
+               count = class_modify_config(lcfg, d->opd_connect_mdt ?
+                                                 PARAM_OSP : PARAM_OSC,
+                                           &dt->dd_kobj);
+               if (count < 0) {
+                       /* class_modify_config() haven't found matching
+                        * parameter and returned an error so that layer(s)
                         * below could use that. But OSP is the bottom, so
-                        * just ignore it */
+                        * just ignore it
+                        */
                        CERROR("%s: unknown param %s\n",
                               (char *)lustre_cfg_string(lcfg, 0),
                               (char *)lustre_cfg_string(lcfg, 1));
-                       rc = 0;
                }
+               rc = 0;
                break;
        default:
                CERROR("%s: unknown command %u\n",
@@ -716,7 +730,7 @@ const struct lu_device_operations osp_lu_ops = {
  * \retval negative    negative errno if get statfs failed.
  */
 static int osp_statfs(const struct lu_env *env, struct dt_device *dev,
-                     struct obd_statfs *sfs)
+                     struct obd_statfs *sfs, struct obd_statfs_info *info)
 {
        struct osp_device *d = dt2osp_dev(dev);
        struct obd_import *imp = d->opd_obd->u.cli.cl_import;
@@ -729,33 +743,40 @@ static int osp_statfs(const struct lu_env *env, struct dt_device *dev,
        if (unlikely(d->opd_imp_active == 0))
                RETURN(-ENOTCONN);
 
+       /* return recently updated data */
+       *sfs = d->opd_statfs;
+       if (info) {
+               info->os_reserved_mb_low = d->opd_reserved_mb_low;
+               info->os_reserved_mb_high = d->opd_reserved_mb_high;
+       }
+
        if (d->opd_pre == NULL)
                RETURN(0);
 
-       /* return recently updated data */
-       *sfs = d->opd_statfs;
+       CDEBUG(D_OTHER, "%s: %llu blocks, %llu free, %llu avail, "
+              "%u reserved mb low, %u reserved mb high,"
+              "%llu files, %llu free files\n", d->opd_obd->obd_name,
+              sfs->os_blocks, sfs->os_bfree, sfs->os_bavail,
+              d->opd_reserved_mb_low, d->opd_reserved_mb_high,
+              sfs->os_files, sfs->os_ffree);
+
+
+       if (info && !info->os_enable_pre)
+               RETURN(0);
 
        /*
         * layer above osp (usually lod) can use ffree to estimate
         * how many objects are available for immediate creation
         */
        spin_lock(&d->opd_pre_lock);
-       LASSERTF(fid_seq(&d->opd_pre_last_created_fid) ==
-                fid_seq(&d->opd_pre_used_fid),
-                "last_created "DFID", next_fid "DFID"\n",
-                PFID(&d->opd_pre_last_created_fid),
-                PFID(&d->opd_pre_used_fid));
-       sfs->os_fprecreated = fid_oid(&d->opd_pre_last_created_fid) -
-                             fid_oid(&d->opd_pre_used_fid);
+       sfs->os_fprecreated = osp_fid_diff(&d->opd_pre_last_created_fid,
+                                          &d->opd_pre_used_fid);
        sfs->os_fprecreated -= d->opd_pre_reserved;
+       LASSERTF(sfs->os_fprecreated <= OST_MAX_PRECREATE * 2,
+                "last_created "DFID", next_fid "DFID", reserved %llu\n",
+                PFID(&d->opd_pre_last_created_fid), PFID(&d->opd_pre_used_fid),
+                d->opd_pre_reserved);
        spin_unlock(&d->opd_pre_lock);
-
-       LASSERT(sfs->os_fprecreated <= OST_MAX_PRECREATE * 2);
-
-       CDEBUG(D_OTHER, "%s: "LPU64" blocks, "LPU64" free, "LPU64" avail, "
-              LPU64" files, "LPU64" free files\n", d->opd_obd->obd_name,
-              sfs->os_blocks, sfs->os_bfree, sfs->os_bavail,
-              sfs->os_files, sfs->os_ffree);
        RETURN(0);
 }
 
@@ -779,56 +800,55 @@ static int osp_sync_timeout(void *data)
 static int osp_sync(const struct lu_env *env, struct dt_device *dev)
 {
        struct osp_device *d = dt2osp_dev(dev);
-       cfs_time_t         expire;
        struct l_wait_info lwi = { 0 };
-       unsigned long      id, old;
-       int                rc = 0;
-       unsigned long      start = cfs_time_current();
+       time64_t start = ktime_get_seconds();
+       int recs, rc = 0;
+       u64 old;
+
        ENTRY;
 
        /* No Sync between MDTs yet. */
        if (d->opd_connect_mdt)
                RETURN(0);
 
+       recs = atomic_read(&d->opd_sync_changes);
+       old = atomic64_read(&d->opd_sync_processed_recs);
+
+       osp_sync_force(env, dt2osp_dev(dev));
+
        if (unlikely(d->opd_imp_active == 0))
                RETURN(-ENOTCONN);
 
-       id = d->opd_syn_last_used_id;
        down_write(&d->opd_async_updates_rwsem);
 
        CDEBUG(D_OTHER, "%s: async updates %d\n", d->opd_obd->obd_name,
               atomic_read(&d->opd_async_updates_count));
 
        /* make sure the connection is fine */
-       expire = cfs_time_shift(obd_timeout);
-       lwi = LWI_TIMEOUT(expire - cfs_time_current(), osp_sync_timeout, d);
-       rc = l_wait_event(d->opd_syn_barrier_waitq,
+       lwi = LWI_TIMEOUT(cfs_time_seconds(obd_timeout), osp_sync_timeout, d);
+       rc = l_wait_event(d->opd_sync_barrier_waitq,
                          atomic_read(&d->opd_async_updates_count) == 0,
                          &lwi);
        up_write(&d->opd_async_updates_rwsem);
        if (rc != 0)
                GOTO(out, rc);
 
-       CDEBUG(D_CACHE, "%s: id: used %lu, processed %lu\n",
-              d->opd_obd->obd_name, id, d->opd_syn_last_processed_id);
-
-       /* wait till all-in-line are processed */
-       while (d->opd_syn_last_processed_id < id) {
-
-               old = d->opd_syn_last_processed_id;
+       CDEBUG(D_CACHE, "%s: processed %llu\n", d->opd_obd->obd_name,
+              (unsigned long long)atomic64_read(&d->opd_sync_processed_recs));
 
+       while (atomic64_read(&d->opd_sync_processed_recs) < old + recs) {
+               __u64 last = atomic64_read(&d->opd_sync_processed_recs);
                /* make sure the connection is fine */
-               expire = cfs_time_shift(obd_timeout);
-               lwi = LWI_TIMEOUT(expire - cfs_time_current(),
+               lwi = LWI_TIMEOUT(cfs_time_seconds(obd_timeout),
                                  osp_sync_timeout, d);
-               l_wait_event(d->opd_syn_barrier_waitq,
-                            d->opd_syn_last_processed_id >= id,
-                            &lwi);
+               l_wait_event(d->opd_sync_barrier_waitq,
+                            atomic64_read(&d->opd_sync_processed_recs)
+                            >= old + recs, &lwi);
 
-               if (d->opd_syn_last_processed_id >= id)
+               if (atomic64_read(&d->opd_sync_processed_recs) >= old + recs)
                        break;
 
-               if (d->opd_syn_last_processed_id != old) {
+               if (atomic64_read(&d->opd_sync_processed_recs) != last) {
                        /* some progress have been made,
                         * keep trying... */
                        continue;
@@ -839,29 +859,28 @@ static int osp_sync(const struct lu_env *env, struct dt_device *dev)
        }
 
        /* block new processing (barrier>0 - few callers are possible */
-       atomic_inc(&d->opd_syn_barrier);
+       atomic_inc(&d->opd_sync_barrier);
 
        CDEBUG(D_CACHE, "%s: %u in flight\n", d->opd_obd->obd_name,
-              d->opd_syn_rpc_in_flight);
+              atomic_read(&d->opd_sync_rpcs_in_flight));
 
        /* wait till all-in-flight are replied, so executed by the target */
        /* XXX: this is used by LFSCK at the moment, which doesn't require
         *      all the changes to be committed, but in general it'd be
         *      better to wait till commit */
-       while (d->opd_syn_rpc_in_flight > 0) {
-
-               old = d->opd_syn_rpc_in_flight;
+       while (atomic_read(&d->opd_sync_rpcs_in_flight) > 0) {
+               old = atomic_read(&d->opd_sync_rpcs_in_flight);
 
-               expire = cfs_time_shift(obd_timeout);
-               lwi = LWI_TIMEOUT(expire - cfs_time_current(),
+               lwi = LWI_TIMEOUT(cfs_time_seconds(obd_timeout),
                                  osp_sync_timeout, d);
-               l_wait_event(d->opd_syn_barrier_waitq,
-                               d->opd_syn_rpc_in_flight == 0, &lwi);
+               l_wait_event(d->opd_sync_barrier_waitq,
+                            atomic_read(&d->opd_sync_rpcs_in_flight) == 0,
+                            &lwi);
 
-               if (d->opd_syn_rpc_in_flight == 0)
+               if (atomic_read(&d->opd_sync_rpcs_in_flight) == 0)
                        break;
 
-               if (d->opd_syn_rpc_in_flight != old) {
+               if (atomic_read(&d->opd_sync_rpcs_in_flight) != old) {
                        /* some progress have been made */
                        continue;
                }
@@ -872,11 +891,11 @@ static int osp_sync(const struct lu_env *env, struct dt_device *dev)
 
 out:
        /* resume normal processing (barrier=0) */
-       atomic_dec(&d->opd_syn_barrier);
-       __osp_sync_check_for_work(d);
+       atomic_dec(&d->opd_sync_barrier);
+       osp_sync_check_for_work(d);
 
-       CDEBUG(D_CACHE, "%s: done in %lu: rc = %d\n", d->opd_obd->obd_name,
-              cfs_time_current() - start, rc);
+       CDEBUG(D_CACHE, "%s: done in %lld: rc = %d\n", d->opd_obd->obd_name,
+              ktime_get_seconds() - start, rc);
 
        RETURN(rc);
 }
@@ -996,7 +1015,6 @@ static int osp_init0(const struct lu_env *env, struct osp_device *osp,
 {
        struct obd_device       *obd;
        struct obd_import       *imp;
-       class_uuid_t            uuid;
        char                    *src, *tgt, *mdt, *osdname = NULL;
        int                     rc;
        long                    idx;
@@ -1117,14 +1135,7 @@ static int osp_init0(const struct lu_env *env, struct osp_device *osp,
        strcat(osdname, "-osd");
        CDEBUG(D_HA, "%s: connect to %s (%s)\n", obd->obd_name, osdname, src);
 
-       if (osp->opd_connect_mdt) {
-               struct client_obd *cli = &osp->opd_obd->u.cli;
-
-               OBD_ALLOC(cli->cl_rpc_lock, sizeof(*cli->cl_rpc_lock));
-               if (!cli->cl_rpc_lock)
-                       GOTO(out_fini, rc = -ENOMEM);
-               osp_init_rpc_lock(cli->cl_rpc_lock);
-       }
+       osp_init_rpc_lock(osp);
 
        osp->opd_dt_dev.dd_lu_dev.ld_ops = &osp_lu_ops;
        osp->opd_dt_dev.dd_ops = &osp_dt_ops;
@@ -1146,7 +1157,7 @@ static int osp_init0(const struct lu_env *env, struct osp_device *osp,
                GOTO(out_ref, rc);
        }
 
-       osp_lprocfs_init(osp);
+       osp_tunables_init(osp);
 
        rc = obd_fid_init(osp->opd_obd, NULL, osp->opd_connect_mdt ?
                          LUSTRE_SEQ_METADATA : LUSTRE_SEQ_DATA);
@@ -1159,10 +1170,11 @@ static int osp_init0(const struct lu_env *env, struct osp_device *osp,
        if (!osp->opd_connect_mdt) {
                /* Initialize last id from the storage - will be
                 * used in orphan cleanup. */
-               rc = osp_last_used_init(env, osp);
-               if (rc)
-                       GOTO(out_fid, rc);
-
+               if (!osp->opd_storage->dd_rdonly) {
+                       rc = osp_last_used_init(env, osp);
+                       if (rc)
+                               GOTO(out_fid, rc);
+               }
 
                /* Initialize precreation thread, it handles new
                 * connections as well. */
@@ -1179,19 +1191,21 @@ static int osp_init0(const struct lu_env *env, struct osp_device *osp,
                if (rc < 0)
                        GOTO(out_precreat, rc);
        } else {
+               osp->opd_got_disconnected = 1;
                rc = osp_update_init(osp);
                if (rc != 0)
                        GOTO(out_fid, rc);
        }
 
+       rc = osp_init_statfs(osp);
+       if (rc)
+               GOTO(out_precreat, rc);
+
        ns_register_cancel(obd->obd_namespace, osp_cancel_weight);
 
        /*
         * Initiate connect to OST
         */
-       ll_generate_random_uuid(uuid);
-       class_uuid_unparse(uuid, &osp->opd_cluuid);
-
        imp = obd->u.cli.cl_import;
 
        rc = ptlrpc_init_import(imp);
@@ -1217,21 +1231,11 @@ out_last_used:
 out_fid:
        obd_fid_fini(osp->opd_obd);
 out_proc:
-       ptlrpc_lprocfs_unregister_obd(obd);
-       lprocfs_obd_cleanup(obd);
-       if (osp->opd_symlink)
-               lprocfs_remove(&osp->opd_symlink);
+       osp_tunables_fini(osp);
        client_obd_cleanup(obd);
 out_ref:
        ptlrpcd_decref();
 out_disconnect:
-       if (osp->opd_connect_mdt) {
-               struct client_obd *cli = &osp->opd_obd->u.cli;
-               if (cli->cl_rpc_lock != NULL) {
-                       OBD_FREE_PTR(cli->cl_rpc_lock);
-                       cli->cl_rpc_lock = NULL;
-               }
-       }
        obd_disconnect(osp->opd_storage_exp);
 out_fini:
        if (osdname)
@@ -1318,35 +1322,23 @@ static struct lu_device *osp_device_fini(const struct lu_env *env,
                                         struct lu_device *ld)
 {
        struct osp_device *osp = lu2osp_dev(ld);
-       struct obd_import *imp;
        int                rc;
 
        ENTRY;
 
        if (osp->opd_async_requests != NULL) {
-               osp_update_request_destroy(osp->opd_async_requests);
+               osp_update_request_destroy(env, osp->opd_async_requests);
                osp->opd_async_requests = NULL;
        }
 
-       if (osp->opd_storage_exp)
+       if (osp->opd_storage_exp) {
+               /* wait for the commit callbacks to complete */
+               wait_event(osp->opd_sync_waitq,
+                         atomic_read(&osp->opd_commits_registered) == 0);
                obd_disconnect(osp->opd_storage_exp);
-
-       imp = osp->opd_obd->u.cli.cl_import;
-
-       if (osp->opd_symlink)
-               lprocfs_remove(&osp->opd_symlink);
+       }
 
        LASSERT(osp->opd_obd);
-       ptlrpc_lprocfs_unregister_obd(osp->opd_obd);
-       lprocfs_obd_cleanup(osp->opd_obd);
-
-       if (osp->opd_connect_mdt) {
-               struct client_obd *cli = &osp->opd_obd->u.cli;
-               if (cli->cl_rpc_lock != NULL) {
-                       OBD_FREE_PTR(cli->cl_rpc_lock);
-                       cli->cl_rpc_lock = NULL;
-               }
-       }
 
        rc = client_obd_cleanup(osp->opd_obd);
        if (rc != 0) {
@@ -1354,6 +1346,8 @@ static struct lu_device *osp_device_fini(const struct lu_env *env,
                RETURN(ERR_PTR(rc));
        }
 
+       osp_tunables_fini(osp);
+
        ptlrpcd_decref();
 
        RETURN(NULL);
@@ -1427,10 +1421,10 @@ static int osp_obd_connect(const struct lu_env *env, struct obd_export **exp,
        *ocd = *data;
 
        imp->imp_connect_flags_orig = ocd->ocd_connect_flags;
+       imp->imp_connect_flags2_orig = ocd->ocd_connect_flags2;
 
        ocd->ocd_version = LUSTRE_VERSION_CODE;
        ocd->ocd_index = data->ocd_index;
-       imp->imp_connect_flags_orig = ocd->ocd_connect_flags;
 
        rc = ptlrpc_connect_import(imp);
        if (rc) {
@@ -1499,7 +1493,7 @@ static int osp_obd_disconnect(struct obd_export *exp)
  * \retval negative    negative errno if statfs failed.
  */
 static int osp_obd_statfs(const struct lu_env *env, struct obd_export *exp,
-                         struct obd_statfs *osfs, __u64 unused, __u32 flags)
+                         struct obd_statfs *osfs, time64_t unused, __u32 flags)
 {
        struct obd_statfs       *msfs;
        struct ptlrpc_request   *req;
@@ -1573,6 +1567,7 @@ static int osp_import_event(struct obd_device *obd, struct obd_import *imp,
                            enum obd_import_event event)
 {
        struct osp_device *d = lu2osp_dev(obd->obd_lu_dev);
+       int rc;
 
        switch (event) {
        case IMP_EVENT_DISCON:
@@ -1591,11 +1586,14 @@ static int osp_import_event(struct obd_device *obd, struct obd_import *imp,
        case IMP_EVENT_INACTIVE:
                d->opd_imp_active = 0;
                d->opd_imp_connected = 0;
+               d->opd_obd->obd_inactive = 1;
                if (d->opd_connect_mdt)
                        break;
-
                if (d->opd_pre != NULL) {
-                       osp_pre_update_status(d, -ENODEV);
+                       /* Import is invalid, we can`t get stripes so
+                        * wakeup waiters */
+                       rc = imp->imp_deactive ? -ESHUTDOWN : -ENODEV;
+                       osp_pre_update_status(d, rc);
                        wake_up(&d->opd_pre_waitq);
                }
 
@@ -1608,13 +1606,12 @@ static int osp_import_event(struct obd_device *obd, struct obd_import *imp,
                        d->opd_new_connection = 1;
                d->opd_imp_connected = 1;
                d->opd_imp_seen_connected = 1;
+               d->opd_obd->obd_inactive = 0;
+               wake_up(&d->opd_pre_waitq);
                if (d->opd_connect_mdt)
                        break;
 
-               if (d->opd_pre != NULL)
-                       wake_up(&d->opd_pre_waitq);
-
-               __osp_sync_check_for_work(d);
+               osp_sync_check_for_work(d);
                CDEBUG(D_HA, "got connected\n");
                break;
        case IMP_EVENT_INVALIDATE:
@@ -1654,7 +1651,7 @@ static int osp_import_event(struct obd_device *obd, struct obd_import *imp,
  * \retval negative    negative errno if the ioctl handling failed.
  */
 static int osp_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
-                        void *karg, void *uarg)
+                        void *karg, void __user *uarg)
 {
        struct obd_device       *obd = exp->exp_obd;
        struct osp_device       *d;
@@ -1684,9 +1681,6 @@ static int osp_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
                rc = ptlrpc_set_import_active(obd->u.cli.cl_import,
                                              data->ioc_offset);
                break;
-       case OBD_IOC_PING_TARGET:
-               rc = ptlrpc_obd_ping(obd);
-               break;
        default:
                CERROR("%s: unrecognized ioctl %#x by %s\n", obd->obd_name,
                       cmd, current_comm());
@@ -1850,7 +1844,7 @@ struct lu_context_key osp_thread_key = {
 LU_KEY_INIT_FINI(osp_txn, struct osp_txn_info);
 
 struct lu_context_key osp_txn_key = {
-       .lct_tags = LCT_OSP_THREAD | LCT_TX_HANDLE,
+       .lct_tags = LCT_OSP_THREAD,
        .lct_init = osp_txn_key_init,
        .lct_fini = osp_txn_key_fini
 };
@@ -1893,7 +1887,7 @@ static struct obd_ops osp_obd_device_ops = {
        .o_fid_alloc    = osp_fid_alloc,
 };
 
-struct llog_operations osp_mds_ost_orig_logops;
+static struct obd_type *sym;
 
 /**
  * Initialize OSP module.
@@ -1909,22 +1903,20 @@ struct llog_operations osp_mds_ost_orig_logops;
  */
 static int __init osp_init(void)
 {
-       struct obd_type *type;
        int rc;
 
        rc = lu_kmem_init(osp_caches);
        if (rc)
                return rc;
 
-
-       rc = class_register_type(&osp_obd_device_ops, NULL, true, NULL,
+       rc = class_register_type(&osp_obd_device_ops, NULL, false, NULL,
                                 LUSTRE_OSP_NAME, &osp_device_type);
        if (rc != 0) {
                lu_kmem_fini(osp_caches);
                return rc;
        }
 
-       rc = class_register_type(&lwp_obd_device_ops, NULL, true, NULL,
+       rc = class_register_type(&lwp_obd_device_ops, NULL, false, NULL,
                                 LUSTRE_LWP_NAME, &lwp_device_type);
        if (rc != 0) {
                class_unregister_type(LUSTRE_OSP_NAME);
@@ -1932,24 +1924,15 @@ static int __init osp_init(void)
                return rc;
        }
 
-       /* Note: add_rec/delcare_add_rec will be only used by catalogs */
-       osp_mds_ost_orig_logops = llog_osd_ops;
-       osp_mds_ost_orig_logops.lop_add = llog_cat_add_rec;
-       osp_mds_ost_orig_logops.lop_declare_add = llog_cat_declare_add_rec;
-
-       /* create "osc" entry in procfs for compatibility purposes */
-       type = class_search_type(LUSTRE_OSC_NAME);
-       if (type != NULL && type->typ_procroot != NULL)
-               return rc;
-
-       type = class_search_type(LUSTRE_OSP_NAME);
-       type->typ_procsym = lprocfs_register("osc", proc_lustre_root,
-                                            NULL, NULL);
-       if (IS_ERR(type->typ_procsym)) {
-               CERROR("osp: can't create compat entry \"osc\": %d\n",
-                      (int) PTR_ERR(type->typ_procsym));
-               type->typ_procsym = NULL;
+       /* create "osc" entry for compatibility purposes */
+       sym = class_add_symlinks(LUSTRE_OSC_NAME, false);
+       if (IS_ERR(sym)) {
+               rc = PTR_ERR(sym);
+               /* does real "osc" already exist ? */
+               if (rc == -EEXIST)
+                       rc = 0;
        }
+
        return rc;
 }
 
@@ -1961,6 +1944,9 @@ static int __init osp_init(void)
  */
 static void __exit osp_exit(void)
 {
+       if (!IS_ERR_OR_NULL(sym))
+               kobject_put(&sym->typ_kobj);
+
        class_unregister_type(LUSTRE_LWP_NAME);
        class_unregister_type(LUSTRE_OSP_NAME);
        lu_kmem_fini(osp_caches);