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LU-9330 osp: make variables match proc tunables
[fs/lustre-release.git] / lustre / osp / osp_sync.c
index 582296f..b04e526 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, 2016, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -63,35 +59,35 @@ static void osp_sync_remove_from_tracker(struct osp_device *d);
  * the first queue is llog itself, once read a change is stored in 2nd queue
  * in form of RPC (but RPC isn't fired yet).
  *
- * the second queue (opd_syn_waiting_for_commit) holds changes awaiting local
+ * the second queue (opd_sync_waiting_for_commit) holds changes awaiting local
  * commit. once change is committed locally it migrates onto 3rd queue.
  *
- * the third queue (opd_syn_committed_here) holds changes committed locally,
+ * the third queue (opd_sync_committed_here) holds changes committed locally,
  * but not sent to OST (as the pipe can be full). once pipe becomes non-full
  * we take a change from the queue and fire corresponded RPC.
  *
  * once RPC is reported committed by OST (using regular last_committed mech.)
- * the change jumps into 4th queue (opd_syn_committed_there), now we can
+ * the change jumps into 4th queue (opd_sync_committed_there), now we can
  * cancel corresponded llog record and release RPC
  *
- * opd_syn_changes is a number of unread llog records (to be processed).
+ * opd_sync_changes is a number of unread llog records (to be processed).
  * notice this number doesn't include llog records from previous boots.
- * with OSP_SYN_THRESHOLD we try to batch processing a bit (TO BE IMPLEMENTED)
+ * with OSP_SYNC_THRESHOLD we try to batch processing a bit (TO BE IMPLEMENTED)
  *
- * opd_syn_rpc_in_progress is a number of requests in 2-4 queues.
- * we control this with OSP_MAX_IN_PROGRESS so that OSP don't consume
+ * opd_sync_rpcs_in_progress is total number of requests in above 2-4 queues.
+ * we control this with OSP_MAX_RPCS_IN_PROGRESS so that OSP don't consume
  * too much memory -- how to deal with 1000th OSTs ? batching could help?
  *
- * opd_syn_rpc_in_flight is a number of RPC in flight.
- * we control this with OSP_MAX_IN_FLIGHT
+ * opd_sync_rpcs_in_flight is a number of RPC in flight.
+ * we control this with OSP_MAX_RPCS_IN_FLIGHT
  */
 
 /* XXX: do math to learn reasonable threshold
  * should it be ~ number of changes fitting bulk? */
 
-#define OSP_SYN_THRESHOLD      10
-#define OSP_MAX_IN_FLIGHT      8
-#define OSP_MAX_IN_PROGRESS    4096
+#define OSP_SYNC_THRESHOLD             10
+#define OSP_MAX_RPCS_IN_FLIGHT         8
+#define OSP_MAX_RPCS_IN_PROGRESS       4096
 
 #define OSP_JOB_MAGIC          0x26112005
 
@@ -99,13 +95,14 @@ struct osp_job_req_args {
        /** bytes reserved for ptlrpc_replay_req() */
        struct ptlrpc_replay_async_args jra_raa;
        struct list_head                jra_committed_link;
-       struct list_head                jra_inflight_link;
+       struct list_head                jra_in_flight_link;
+       struct llog_cookie              jra_lcookie;
        __u32                           jra_magic;
 };
 
 static inline int osp_sync_running(struct osp_device *d)
 {
-       return !!(d->opd_syn_thread.t_flags & SVC_RUNNING);
+       return !!(d->opd_sync_thread.t_flags & SVC_RUNNING);
 }
 
 /**
@@ -118,7 +115,7 @@ static inline int osp_sync_running(struct osp_device *d)
  */
 static inline int osp_sync_stopped(struct osp_device *d)
 {
-       return !!(d->opd_syn_thread.t_flags & SVC_STOPPED);
+       return !!(d->opd_sync_thread.t_flags & SVC_STOPPED);
 }
 
 /*
@@ -131,12 +128,12 @@ static inline int osp_sync_stopped(struct osp_device *d)
  */
 static inline int osp_sync_has_new_job(struct osp_device *d)
 {
-       return ((d->opd_syn_last_processed_id < d->opd_syn_last_used_id) &&
-               (d->opd_syn_last_processed_id < d->opd_syn_last_committed_id))
-               || (d->opd_syn_prev_done == 0);
+       return ((d->opd_sync_last_processed_id < d->opd_sync_last_used_id) &&
+               (d->opd_sync_last_processed_id < d->opd_sync_last_committed_id))
+               || (d->opd_sync_prev_done == 0);
 }
 
-static inline int osp_sync_inflight_conflict(struct osp_device *d,
+static inline int osp_sync_in_flight_conflict(struct osp_device *d,
                                             struct llog_rec_hdr *h)
 {
        struct osp_job_req_args *jra;
@@ -144,14 +141,22 @@ static inline int osp_sync_inflight_conflict(struct osp_device *d,
        int                      conflict = 0;
 
        if (h == NULL || h->lrh_type == LLOG_GEN_REC ||
-           list_empty(&d->opd_syn_inflight_list))
+           list_empty(&d->opd_sync_in_flight_list))
                return conflict;
 
        memset(&ostid, 0, sizeof(ostid));
        switch (h->lrh_type) {
-       case MDS_UNLINK_REC:
-               ostid_set_seq(&ostid, ((struct llog_unlink_rec *)h)->lur_oseq);
-               ostid_set_id(&ostid, ((struct llog_unlink_rec *)h)->lur_oid);
+       case MDS_UNLINK_REC: {
+               struct llog_unlink_rec *unlink = (struct llog_unlink_rec *)h;
+
+               ostid_set_seq(&ostid, unlink->lur_oseq);
+               if (ostid_set_id(&ostid, unlink->lur_oid)) {
+                       CERROR("Bad %llu to set " DOSTID "\n",
+                              (unsigned long long)(unlink->lur_oid),
+                              POSTID(&ostid));
+                       return 1;
+               }
+               }
                break;
        case MDS_UNLINK64_REC:
                fid_to_ostid(&((struct llog_unlink64_rec *)h)->lur_fid, &ostid);
@@ -163,8 +168,9 @@ static inline int osp_sync_inflight_conflict(struct osp_device *d,
                LBUG();
        }
 
-       spin_lock(&d->opd_syn_lock);
-       list_for_each_entry(jra, &d->opd_syn_inflight_list, jra_inflight_link) {
+       spin_lock(&d->opd_sync_lock);
+       list_for_each_entry(jra, &d->opd_sync_in_flight_list,
+                           jra_in_flight_link) {
                struct ptlrpc_request   *req;
                struct ost_body         *body;
 
@@ -181,14 +187,15 @@ static inline int osp_sync_inflight_conflict(struct osp_device *d,
                        break;
                }
        }
-       spin_unlock(&d->opd_syn_lock);
+       spin_unlock(&d->opd_sync_lock);
 
        return conflict;
 }
 
-static inline int osp_sync_low_in_progress(struct osp_device *d)
+static inline int osp_sync_rpcs_in_progress_low(struct osp_device *d)
 {
-       return d->opd_syn_rpc_in_progress < d->opd_syn_max_rpc_in_progress;
+       return atomic_read(&d->opd_sync_rpcs_in_progress) <
+               d->opd_sync_max_rpcs_in_progress;
 }
 
 /**
@@ -199,9 +206,10 @@ static inline int osp_sync_low_in_progress(struct osp_device *d)
  * \retval 1           there is room
  * \retval 0           no room, the pipe is full
  */
-static inline int osp_sync_low_in_flight(struct osp_device *d)
+static inline int osp_sync_rpcs_in_flight_low(struct osp_device *d)
 {
-       return d->opd_syn_rpc_in_flight < d->opd_syn_max_rpc_in_flight;
+       return atomic_read(&d->opd_sync_rpcs_in_flight) <
+               d->opd_sync_max_rpcs_in_flight;
 }
 
 /**
@@ -212,30 +220,24 @@ static inline int osp_sync_low_in_flight(struct osp_device *d)
  * \retval 1           time to wake up
  * \retval 0           no need to wake up
  */
-static inline int osp_sync_has_work(struct osp_device *d)
+static inline int osp_sync_has_work(struct osp_device *osp)
 {
        /* has new/old changes and low in-progress? */
-       if (osp_sync_has_new_job(d) && osp_sync_low_in_progress(d) &&
-           osp_sync_low_in_flight(d) && d->opd_imp_connected)
+       if (osp_sync_has_new_job(osp) && osp_sync_rpcs_in_progress_low(osp) &&
+           osp_sync_rpcs_in_flight_low(osp) && osp->opd_imp_connected)
                return 1;
 
        /* has remotely committed? */
-       if (!list_empty(&d->opd_syn_committed_there))
+       if (!list_empty(&osp->opd_sync_committed_there))
                return 1;
 
        return 0;
 }
 
-#define osp_sync_check_for_work(d)                      \
-{                                                       \
-       if (osp_sync_has_work(d)) {                     \
-               wake_up(&d->opd_syn_waitq);    \
-       }                                               \
-}
-
-void __osp_sync_check_for_work(struct osp_device *d)
+void osp_sync_check_for_work(struct osp_device *osp)
 {
-       osp_sync_check_for_work(d);
+       if (osp_sync_has_work(osp))
+               wake_up(&osp->opd_sync_waitq);
 }
 
 static inline __u64 osp_sync_correct_id(struct osp_device *d,
@@ -247,7 +249,7 @@ static inline __u64 osp_sync_correct_id(struct osp_device *d,
         * last_processed and last_committed is less than
         * 64745 ^ 2 and less than 2^32 - 1
         */
-       __u64 correct_id = d->opd_syn_last_committed_id;
+       __u64 correct_id = d->opd_sync_last_committed_id;
 
        if ((correct_id & 0xffffffffULL) < rec->lrh_id)
                correct_id -= 0x100000000ULL;
@@ -276,22 +278,22 @@ static inline int osp_sync_can_process_new(struct osp_device *d,
 {
        LASSERT(d);
 
-       if (unlikely(atomic_read(&d->opd_syn_barrier) > 0))
+       if (unlikely(atomic_read(&d->opd_sync_barrier) > 0))
                return 0;
-       if (unlikely(osp_sync_inflight_conflict(d, rec)))
+       if (unlikely(osp_sync_in_flight_conflict(d, rec)))
                return 0;
-       if (!osp_sync_low_in_progress(d))
+       if (!osp_sync_rpcs_in_progress_low(d))
                return 0;
-       if (!osp_sync_low_in_flight(d))
+       if (!osp_sync_rpcs_in_flight_low(d))
                return 0;
        if (!d->opd_imp_connected)
                return 0;
-       if (d->opd_syn_prev_done == 0)
+       if (d->opd_sync_prev_done == 0)
                return 1;
-       if (d->opd_syn_changes == 0)
+       if (atomic_read(&d->opd_sync_changes) == 0)
                return 0;
        if (rec == NULL ||
-           osp_sync_correct_id(d, rec) <= d->opd_syn_last_committed_id)
+           osp_sync_correct_id(d, rec) <= d->opd_sync_last_committed_id)
                return 1;
        return 0;
 }
@@ -334,7 +336,7 @@ int osp_sync_declare_add(const struct lu_env *env, struct osp_object *o,
                osi->osi_hdr.lrh_len = sizeof(struct llog_unlink64_rec);
                break;
        case MDS_SETATTR64_REC:
-               osi->osi_hdr.lrh_len = sizeof(struct llog_setattr64_rec);
+               osi->osi_hdr.lrh_len = sizeof(struct llog_setattr64_rec_v2);
                break;
        default:
                LBUG();
@@ -410,9 +412,11 @@ static int osp_sync_add_rec(const struct lu_env *env, struct osp_device *d,
                LASSERT(attr);
                osi->osi_setattr.lsr_uid = attr->la_uid;
                osi->osi_setattr.lsr_gid = attr->la_gid;
+               osi->osi_setattr.lsr_projid = attr->la_projid;
                osi->osi_setattr.lsr_valid =
                        ((attr->la_valid & LA_UID) ? OBD_MD_FLUID : 0) |
-                       ((attr->la_valid & LA_GID) ? OBD_MD_FLGID : 0);
+                       ((attr->la_valid & LA_GID) ? OBD_MD_FLGID : 0) |
+                       ((attr->la_valid & LA_PROJID) ? OBD_MD_FLPROJID : 0);
                break;
        default:
                LBUG();
@@ -432,14 +436,12 @@ static int osp_sync_add_rec(const struct lu_env *env, struct osp_device *d,
        llog_ctxt_put(ctxt);
 
        if (likely(rc >= 0)) {
-               CDEBUG(D_OTHER, "%s: new record "DOSTID":%lu/%lu: %d\n",
+               CDEBUG(D_OTHER, "%s: new record "DFID":%x.%u: rc = %d\n",
                       d->opd_obd->obd_name,
-                      POSTID(&osi->osi_cookie.lgc_lgl.lgl_oi),
-                      (unsigned long)osi->osi_cookie.lgc_lgl.lgl_ogen,
-                      (unsigned long)osi->osi_cookie.lgc_index, rc);
-               spin_lock(&d->opd_syn_lock);
-               d->opd_syn_changes++;
-               spin_unlock(&d->opd_syn_lock);
+                      PFID(&osi->osi_cookie.lgc_lgl.lgl_oi.oi_fid),
+                      osi->osi_cookie.lgc_lgl.lgl_ogen,
+                      osi->osi_cookie.lgc_index, rc);
+               atomic_inc(&d->opd_sync_changes);
        }
        /* return 0 always here, error case just cause no llog record */
        RETURN(0);
@@ -491,12 +493,12 @@ static void osp_sync_request_commit_cb(struct ptlrpc_request *req)
        struct osp_device *d = req->rq_cb_data;
        struct osp_job_req_args *jra;
 
-       CDEBUG(D_HA, "commit req %p, transno "LPU64"\n", req, req->rq_transno);
+       CDEBUG(D_HA, "commit req %p, transno %llu\n", req, req->rq_transno);
 
        if (unlikely(req->rq_transno == 0))
                return;
 
-       /* do not do any opd_dyn_rpc_* accounting here
+       /* do not do any opd_sync_rpcs_* accounting here
         * it's done in osp_sync_interpret sooner or later */
        LASSERT(d);
 
@@ -506,12 +508,12 @@ static void osp_sync_request_commit_cb(struct ptlrpc_request *req)
 
        ptlrpc_request_addref(req);
 
-       spin_lock(&d->opd_syn_lock);
-       list_add(&jra->jra_committed_link, &d->opd_syn_committed_there);
-       spin_unlock(&d->opd_syn_lock);
+       spin_lock(&d->opd_sync_lock);
+       list_add(&jra->jra_committed_link, &d->opd_sync_committed_there);
+       spin_unlock(&d->opd_sync_lock);
 
        /* XXX: some batching wouldn't hurt */
-       wake_up(&d->opd_syn_waitq);
+       wake_up(&d->opd_sync_waitq);
 }
 
 /**
@@ -558,11 +560,12 @@ static int osp_sync_interpret(const struct lu_env *env,
 
                ptlrpc_request_addref(req);
 
-               spin_lock(&d->opd_syn_lock);
-               list_add(&jra->jra_committed_link, &d->opd_syn_committed_there);
-               spin_unlock(&d->opd_syn_lock);
+               spin_lock(&d->opd_sync_lock);
+               list_add(&jra->jra_committed_link,
+                        &d->opd_sync_committed_there);
+               spin_unlock(&d->opd_sync_lock);
 
-               wake_up(&d->opd_syn_waitq);
+               wake_up(&d->opd_sync_waitq);
        } else if (rc) {
                struct obd_import *imp = req->rq_import;
                /*
@@ -570,20 +573,18 @@ static int osp_sync_interpret(const struct lu_env *env,
                 */
                LASSERTF(req->rq_transno == 0 ||
                         req->rq_import_generation < imp->imp_generation,
-                        "transno "LPU64", rc %d, gen: req %d, imp %d\n",
+                        "transno %llu, rc %d, gen: req %d, imp %d\n",
                         req->rq_transno, rc, req->rq_import_generation,
                         imp->imp_generation);
                if (req->rq_transno == 0) {
                        /* this is the last time we see the request
                         * if transno is not zero, then commit cb
                         * will be called at some point */
-                       LASSERT(d->opd_syn_rpc_in_progress > 0);
-                       spin_lock(&d->opd_syn_lock);
-                       d->opd_syn_rpc_in_progress--;
-                       spin_unlock(&d->opd_syn_lock);
+                       LASSERT(atomic_read(&d->opd_sync_rpcs_in_progress) > 0);
+                       atomic_dec(&d->opd_sync_rpcs_in_progress);
                }
 
-               wake_up(&d->opd_syn_waitq);
+               wake_up(&d->opd_sync_waitq);
        } else if (d->opd_pre != NULL &&
                   unlikely(d->opd_pre_status == -ENOSPC)) {
                /*
@@ -594,16 +595,16 @@ static int osp_sync_interpret(const struct lu_env *env,
                osp_statfs_need_now(d);
        }
 
-       LASSERT(d->opd_syn_rpc_in_flight > 0);
-       spin_lock(&d->opd_syn_lock);
-       d->opd_syn_rpc_in_flight--;
-       list_del_init(&jra->jra_inflight_link);
-       spin_unlock(&d->opd_syn_lock);
-       if (unlikely(atomic_read(&d->opd_syn_barrier) > 0))
-               wake_up(&d->opd_syn_barrier_waitq);
+       spin_lock(&d->opd_sync_lock);
+       list_del_init(&jra->jra_in_flight_link);
+       spin_unlock(&d->opd_sync_lock);
+       LASSERT(atomic_read(&d->opd_sync_rpcs_in_flight) > 0);
+       atomic_dec(&d->opd_sync_rpcs_in_flight);
+       if (unlikely(atomic_read(&d->opd_sync_barrier) > 0))
+               wake_up(&d->opd_sync_barrier_waitq);
        CDEBUG(D_OTHER, "%s: %d in flight, %d in progress\n",
-              d->opd_obd->obd_name, d->opd_syn_rpc_in_flight,
-              d->opd_syn_rpc_in_progress);
+              d->opd_obd->obd_name, atomic_read(&d->opd_sync_rpcs_in_flight),
+              atomic_read(&d->opd_sync_rpcs_in_progress));
 
        osp_sync_check_for_work(d);
 
@@ -616,21 +617,29 @@ static int osp_sync_interpret(const struct lu_env *env,
  * This is just a tiny helper function to put the request on the sending list
  *
  * \param[in] d                OSP device
+ * \param[in] llh      llog handle where the record is stored
+ * \param[in] h                llog record
  * \param[in] req      request
  */
 static void osp_sync_send_new_rpc(struct osp_device *d,
+                                 struct llog_handle *llh,
+                                 struct llog_rec_hdr *h,
                                  struct ptlrpc_request *req)
 {
        struct osp_job_req_args *jra;
 
-       LASSERT(d->opd_syn_rpc_in_flight <= d->opd_syn_max_rpc_in_flight);
+       LASSERT(atomic_read(&d->opd_sync_rpcs_in_flight) <=
+               d->opd_sync_max_rpcs_in_flight);
 
        jra = ptlrpc_req_async_args(req);
        jra->jra_magic = OSP_JOB_MAGIC;
+       jra->jra_lcookie.lgc_lgl = llh->lgh_id;
+       jra->jra_lcookie.lgc_subsys = LLOG_MDS_OST_ORIG_CTXT;
+       jra->jra_lcookie.lgc_index = h->lrh_index;
        INIT_LIST_HEAD(&jra->jra_committed_link);
-       spin_lock(&d->opd_syn_lock);
-       list_add_tail(&jra->jra_inflight_link, &d->opd_syn_inflight_list);
-       spin_unlock(&d->opd_syn_lock);
+       spin_lock(&d->opd_sync_lock);
+       list_add_tail(&jra->jra_in_flight_link, &d->opd_sync_in_flight_list);
+       spin_unlock(&d->opd_sync_lock);
 
        ptlrpcd_add_req(req);
 }
@@ -645,8 +654,6 @@ static void osp_sync_send_new_rpc(struct osp_device *d,
  * are initialized.
  *
  * \param[in] d                OSP device
- * \param[in] llh      llog handle where the record is stored
- * \param[in] h                llog record
  * \param[in] op       type of the change
  * \param[in] format   request format to be used
  *
@@ -654,13 +661,10 @@ static void osp_sync_send_new_rpc(struct osp_device *d,
  * \retval ERR_PTR(errno)      on error
  */
 static struct ptlrpc_request *osp_sync_new_job(struct osp_device *d,
-                                              struct llog_handle *llh,
-                                              struct llog_rec_hdr *h,
                                               ost_cmd_t op,
                                               const struct req_format *format)
 {
        struct ptlrpc_request   *req;
-       struct ost_body         *body;
        struct obd_import       *imp;
        int                      rc;
 
@@ -681,18 +685,6 @@ static struct ptlrpc_request *osp_sync_new_job(struct osp_device *d,
                return ERR_PTR(rc);
        }
 
-       /*
-        * this is a trick: to save on memory allocations we put cookie
-        * into the request, but don't set corresponded flag in o_valid
-        * so that OST doesn't interpret this cookie. once the request
-        * is committed on OST we take cookie from the request and cancel
-        */
-       body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
-       LASSERT(body);
-       body->oa.o_lcookie.lgc_lgl = llh->lgh_id;
-       body->oa.o_lcookie.lgc_subsys = LLOG_MDS_OST_ORIG_CTXT;
-       body->oa.o_lcookie.lgc_index = h->lrh_index;
-
        req->rq_interpret_reply = osp_sync_interpret;
        req->rq_commit_cb = osp_sync_request_commit_cb;
        req->rq_cb_data = d;
@@ -729,16 +721,18 @@ static int osp_sync_new_setattr_job(struct osp_device *d,
 
        if (OBD_FAIL_CHECK(OBD_FAIL_OSP_CHECK_INVALID_REC))
                RETURN(1);
-       /* lsr_valid can only be 0 or have OBD_MD_{FLUID,FLGID} set,
+
+       /* lsr_valid can only be 0 or HAVE OBD_MD_{FLUID, FLGID, FLPROJID} set,
         * so no bits other than these should be set. */
-       if ((rec->lsr_valid & ~(OBD_MD_FLUID | OBD_MD_FLGID)) != 0) {
-               CERROR("%s: invalid setattr record, lsr_valid:"LPU64"\n",
-                      d->opd_obd->obd_name, rec->lsr_valid);
+       if ((rec->lsr_valid & ~(OBD_MD_FLUID | OBD_MD_FLGID |
+           OBD_MD_FLPROJID)) != 0) {
+               CERROR("%s: invalid setattr record, lsr_valid:%llu\n",
+                       d->opd_obd->obd_name, rec->lsr_valid);
                /* return 1 on invalid record */
                RETURN(1);
        }
 
-       req = osp_sync_new_job(d, llh, h, OST_SETATTR, &RQF_OST_SETATTR);
+       req = osp_sync_new_job(d, OST_SETATTR, &RQF_OST_SETATTR);
        if (IS_ERR(req))
                RETURN(PTR_ERR(req));
 
@@ -748,6 +742,10 @@ static int osp_sync_new_setattr_job(struct osp_device *d,
        body->oa.o_uid = rec->lsr_uid;
        body->oa.o_gid = rec->lsr_gid;
        body->oa.o_valid = OBD_MD_FLGROUP | OBD_MD_FLID;
+       if (h->lrh_len > sizeof(struct llog_setattr64_rec))
+               body->oa.o_projid = ((struct llog_setattr64_rec_v2 *)
+                                     rec)->lsr_projid;
+
        /* old setattr record (prior 2.6.0) doesn't have 'valid' stored,
         * we assume that both UID and GID are valid in that case. */
        if (rec->lsr_valid == 0)
@@ -755,7 +753,7 @@ static int osp_sync_new_setattr_job(struct osp_device *d,
        else
                body->oa.o_valid |= rec->lsr_valid;
 
-       osp_sync_send_new_rpc(d, req);
+       osp_sync_send_new_rpc(d, llh, h, req);
        RETURN(0);
 }
 
@@ -781,24 +779,27 @@ static int osp_sync_new_unlink_job(struct osp_device *d,
        struct llog_unlink_rec  *rec = (struct llog_unlink_rec *)h;
        struct ptlrpc_request   *req;
        struct ost_body         *body;
+       int rc;
 
        ENTRY;
        LASSERT(h->lrh_type == MDS_UNLINK_REC);
 
-       req = osp_sync_new_job(d, llh, h, OST_DESTROY, &RQF_OST_DESTROY);
+       req = osp_sync_new_job(d, OST_DESTROY, &RQF_OST_DESTROY);
        if (IS_ERR(req))
                RETURN(PTR_ERR(req));
 
        body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
        LASSERT(body);
        ostid_set_seq(&body->oa.o_oi, rec->lur_oseq);
-       ostid_set_id(&body->oa.o_oi, rec->lur_oid);
+       rc = ostid_set_id(&body->oa.o_oi, rec->lur_oid);
+       if (rc)
+               return rc;
        body->oa.o_misc = rec->lur_count;
        body->oa.o_valid = OBD_MD_FLGROUP | OBD_MD_FLID;
        if (rec->lur_count)
                body->oa.o_valid |= OBD_MD_FLOBJCOUNT;
 
-       osp_sync_send_new_rpc(d, req);
+       osp_sync_send_new_rpc(d, llh, h, req);
        RETURN(0);
 }
 
@@ -831,8 +832,7 @@ static int osp_sync_new_unlink64_job(struct osp_device *d,
 
        ENTRY;
        LASSERT(h->lrh_type == MDS_UNLINK64_REC);
-       req = osp_sync_new_job(d, llh, h, OST_DESTROY,
-                              &RQF_OST_DESTROY);
+       req = osp_sync_new_job(d, OST_DESTROY, &RQF_OST_DESTROY);
        if (IS_ERR(req))
                RETURN(PTR_ERR(req));
 
@@ -845,7 +845,7 @@ static int osp_sync_new_unlink64_job(struct osp_device *d,
        body->oa.o_misc = rec->lur_count;
        body->oa.o_valid = OBD_MD_FLGROUP | OBD_MD_FLID |
                           OBD_MD_FLOBJCOUNT;
-       osp_sync_send_new_rpc(d, req);
+       osp_sync_send_new_rpc(d, llh, h, req);
        RETURN(0);
 }
 
@@ -884,11 +884,11 @@ static void osp_sync_process_record(const struct lu_env *env,
                struct llog_gen_rec *gen = (struct llog_gen_rec *)rec;
 
                /* we're waiting for the record generated by this instance */
-               LASSERT(d->opd_syn_prev_done == 0);
-               if (!memcmp(&d->opd_syn_generation, &gen->lgr_gen,
+               LASSERT(d->opd_sync_prev_done == 0);
+               if (!memcmp(&d->opd_sync_generation, &gen->lgr_gen,
                            sizeof(gen->lgr_gen))) {
                        CDEBUG(D_HA, "processed all old entries\n");
-                       d->opd_syn_prev_done = 1;
+                       d->opd_sync_prev_done = 1;
                }
 
                /* cancel any generation record */
@@ -904,10 +904,8 @@ static void osp_sync_process_record(const struct lu_env *env,
 
        /* notice we increment counters before sending RPC, to be consistent
         * in RPC interpret callback which may happen very quickly */
-       spin_lock(&d->opd_syn_lock);
-       d->opd_syn_rpc_in_flight++;
-       d->opd_syn_rpc_in_progress++;
-       spin_unlock(&d->opd_syn_lock);
+       atomic_inc(&d->opd_sync_rpcs_in_flight);
+       atomic_inc(&d->opd_sync_rpcs_in_progress);
 
        switch (rec->lrh_type) {
        /* case MDS_UNLINK_REC is kept for compatibility */
@@ -928,33 +926,35 @@ static void osp_sync_process_record(const struct lu_env *env,
                break;
        }
 
-       spin_lock(&d->opd_syn_lock);
-
        /* For all kinds of records, not matter successful or not,
         * we should decrease changes and bump last_processed_id.
         */
-       if (d->opd_syn_prev_done) {
+       if (d->opd_sync_prev_done) {
                __u64 correct_id = osp_sync_correct_id(d, rec);
-               LASSERT(d->opd_syn_changes > 0);
-               LASSERT(correct_id <= d->opd_syn_last_committed_id);
+               LASSERT(atomic_read(&d->opd_sync_changes) > 0);
+               LASSERT(correct_id <= d->opd_sync_last_committed_id);
                /* NOTE: it's possible to meet same id if
                 * OST stores few stripes of same file
                 */
-               if (correct_id > d->opd_syn_last_processed_id) {
-                       d->opd_syn_last_processed_id = correct_id;
-                       wake_up(&d->opd_syn_barrier_waitq);
+               while (1) {
+                       /* another thread may be trying to set new value */
+                       rmb();
+                       if (correct_id > d->opd_sync_last_processed_id) {
+                               d->opd_sync_last_processed_id = correct_id;
+                               wake_up(&d->opd_sync_barrier_waitq);
+                       } else
+                               break;
                }
-               d->opd_syn_changes--;
+               atomic_dec(&d->opd_sync_changes);
        }
        if (rc != 0) {
-               d->opd_syn_rpc_in_flight--;
-               d->opd_syn_rpc_in_progress--;
+               atomic_dec(&d->opd_sync_rpcs_in_flight);
+               atomic_dec(&d->opd_sync_rpcs_in_progress);
        }
-       CDEBUG(D_OTHER, "%s: %d in flight, %d in progress\n",
-              d->opd_obd->obd_name, d->opd_syn_rpc_in_flight,
-              d->opd_syn_rpc_in_progress);
 
-       spin_unlock(&d->opd_syn_lock);
+       CDEBUG(D_OTHER, "%s: %d in flight, %d in progress\n",
+              d->opd_obd->obd_name, atomic_read(&d->opd_sync_rpcs_in_flight),
+              atomic_read(&d->opd_sync_rpcs_in_progress));
 
        /* Delete the invalid record */
        if (rc == 1) {
@@ -997,7 +997,7 @@ static void osp_sync_process_committed(const struct lu_env *env,
 
        ENTRY;
 
-       if (list_empty(&d->opd_syn_committed_there))
+       if (list_empty(&d->opd_sync_committed_there))
                return;
 
        /*
@@ -1023,10 +1023,10 @@ static void osp_sync_process_committed(const struct lu_env *env,
        LASSERT(llh);
 
        INIT_LIST_HEAD(&list);
-       spin_lock(&d->opd_syn_lock);
-       list_splice(&d->opd_syn_committed_there, &list);
-       INIT_LIST_HEAD(&d->opd_syn_committed_there);
-       spin_unlock(&d->opd_syn_lock);
+       spin_lock(&d->opd_sync_lock);
+       list_splice(&d->opd_sync_committed_there, &list);
+       INIT_LIST_HEAD(&d->opd_sync_committed_there);
+       spin_unlock(&d->opd_sync_lock);
 
        while (!list_empty(&list)) {
                struct osp_job_req_args *jra;
@@ -1045,12 +1045,12 @@ static void osp_sync_process_committed(const struct lu_env *env,
                 * called we can check committness directly */
                if (req->rq_import_generation == imp->imp_generation) {
                        rc = llog_cat_cancel_records(env, llh, 1,
-                                                    &body->oa.o_lcookie);
+                                                    &jra->jra_lcookie);
                        if (rc)
                                CERROR("%s: can't cancel record: %d\n",
                                       obd->obd_name, rc);
                } else {
-                       DEBUG_REQ(D_OTHER, req, "imp_committed = "LPU64,
+                       DEBUG_REQ(D_OTHER, req, "imp_committed = %llu",
                                  imp->imp_peer_committed_transno);
                }
                ptlrpc_req_finished(req);
@@ -1059,20 +1059,18 @@ static void osp_sync_process_committed(const struct lu_env *env,
 
        llog_ctxt_put(ctxt);
 
-       LASSERT(d->opd_syn_rpc_in_progress >= done);
-       spin_lock(&d->opd_syn_lock);
-       d->opd_syn_rpc_in_progress -= done;
-       spin_unlock(&d->opd_syn_lock);
+       LASSERT(atomic_read(&d->opd_sync_rpcs_in_progress) >= done);
+       atomic_sub(done, &d->opd_sync_rpcs_in_progress);
        CDEBUG(D_OTHER, "%s: %d in flight, %d in progress\n",
-              d->opd_obd->obd_name, d->opd_syn_rpc_in_flight,
-              d->opd_syn_rpc_in_progress);
+              d->opd_obd->obd_name, atomic_read(&d->opd_sync_rpcs_in_flight),
+              atomic_read(&d->opd_sync_rpcs_in_progress));
 
        osp_sync_check_for_work(d);
 
        /* wake up the thread if requested to stop:
         * it might be waiting for in-progress to complete */
        if (unlikely(osp_sync_running(d) == 0))
-               wake_up(&d->opd_syn_waitq);
+               wake_up(&d->opd_sync_waitq);
 
        EXIT;
 }
@@ -1116,11 +1114,11 @@ static int osp_sync_process_queues(const struct lu_env *env,
                if (osp_sync_can_process_new(d, rec)) {
                        if (llh == NULL) {
                                /* ask llog for another record */
-                               CDEBUG(D_HA, "%lu changes, %u in progress,"
-                                      " %u in flight\n",
-                                      d->opd_syn_changes,
-                                      d->opd_syn_rpc_in_progress,
-                                      d->opd_syn_rpc_in_flight);
+                               CDEBUG(D_HA, "%u changes, %u in progress,"
+                                    " %u in flight\n",
+                                    atomic_read(&d->opd_sync_changes),
+                                    atomic_read(&d->opd_sync_rpcs_in_progress),
+                                    atomic_read(&d->opd_sync_rpcs_in_flight));
                                return 0;
                        }
                        osp_sync_process_record(env, d, llh, rec);
@@ -1128,13 +1126,13 @@ static int osp_sync_process_queues(const struct lu_env *env,
                        rec = NULL;
                }
 
-               if (d->opd_syn_last_processed_id == d->opd_syn_last_used_id)
+               if (d->opd_sync_last_processed_id == d->opd_sync_last_used_id)
                        osp_sync_remove_from_tracker(d);
 
-               l_wait_event(d->opd_syn_waitq,
+               l_wait_event(d->opd_sync_waitq,
                             !osp_sync_running(d) ||
                             osp_sync_can_process_new(d, rec) ||
-                            !list_empty(&d->opd_syn_committed_there),
+                            !list_empty(&d->opd_sync_committed_there),
                             &lwi);
        } while (1);
 }
@@ -1162,7 +1160,7 @@ static int osp_sync_process_queues(const struct lu_env *env,
 static int osp_sync_thread(void *_arg)
 {
        struct osp_device       *d = _arg;
-       struct ptlrpc_thread    *thread = &d->opd_syn_thread;
+       struct ptlrpc_thread    *thread = &d->opd_sync_thread;
        struct l_wait_info       lwi = { 0 };
        struct llog_ctxt        *ctxt;
        struct obd_device       *obd = d->opd_obd;
@@ -1176,12 +1174,18 @@ static int osp_sync_thread(void *_arg)
        if (rc) {
                CERROR("%s: can't initialize env: rc = %d\n",
                       obd->obd_name, rc);
+
+               spin_lock(&d->opd_sync_lock);
+               thread->t_flags = SVC_STOPPED;
+               spin_unlock(&d->opd_sync_lock);
+               wake_up(&thread->t_ctl_waitq);
+
                RETURN(rc);
        }
 
-       spin_lock(&d->opd_syn_lock);
+       spin_lock(&d->opd_sync_lock);
        thread->t_flags = SVC_RUNNING;
-       spin_unlock(&d->opd_syn_lock);
+       spin_unlock(&d->opd_sync_lock);
        wake_up(&thread->t_ctl_waitq);
 
        ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
@@ -1198,45 +1202,54 @@ static int osp_sync_thread(void *_arg)
        }
 
        rc = llog_cat_process(&env, llh, osp_sync_process_queues, d, 0, 0);
+       if (rc < 0) {
+               CERROR("%s: llog process with osp_sync_process_queues "
+                      "failed: %d\n", d->opd_obd->obd_name, rc);
+               GOTO(close, rc);
+       }
        LASSERTF(rc == 0 || rc == LLOG_PROC_BREAK,
-                "%lu changes, %u in progress, %u in flight: %d\n",
-                d->opd_syn_changes, d->opd_syn_rpc_in_progress,
-                d->opd_syn_rpc_in_flight, rc);
+                "%u changes, %u in progress, %u in flight: %d\n",
+                atomic_read(&d->opd_sync_changes),
+                atomic_read(&d->opd_sync_rpcs_in_progress),
+                atomic_read(&d->opd_sync_rpcs_in_flight), rc);
 
        /* we don't expect llog_process_thread() to exit till umount */
        LASSERTF(thread->t_flags != SVC_RUNNING,
-                "%lu changes, %u in progress, %u in flight\n",
-                d->opd_syn_changes, d->opd_syn_rpc_in_progress,
-                d->opd_syn_rpc_in_flight);
+                "%u changes, %u in progress, %u in flight\n",
+                atomic_read(&d->opd_sync_changes),
+                atomic_read(&d->opd_sync_rpcs_in_progress),
+                atomic_read(&d->opd_sync_rpcs_in_flight));
 
        /* wait till all the requests are completed */
        count = 0;
-       while (d->opd_syn_rpc_in_progress > 0) {
+       while (atomic_read(&d->opd_sync_rpcs_in_progress) > 0) {
                osp_sync_process_committed(&env, d);
 
                lwi = LWI_TIMEOUT(cfs_time_seconds(5), NULL, NULL);
-               rc = l_wait_event(d->opd_syn_waitq,
-                                 d->opd_syn_rpc_in_progress == 0,
+               rc = l_wait_event(d->opd_sync_waitq,
+                               atomic_read(&d->opd_sync_rpcs_in_progress) == 0,
                                  &lwi);
                if (rc == -ETIMEDOUT)
                        count++;
                LASSERTF(count < 10, "%s: %d %d %sempty\n",
-                        d->opd_obd->obd_name, d->opd_syn_rpc_in_progress,
-                        d->opd_syn_rpc_in_flight,
-                        list_empty(&d->opd_syn_committed_there) ? "" : "!");
+                        d->opd_obd->obd_name,
+                        atomic_read(&d->opd_sync_rpcs_in_progress),
+                        atomic_read(&d->opd_sync_rpcs_in_flight),
+                        list_empty(&d->opd_sync_committed_there) ? "" : "!");
 
        }
 
+close:
        llog_cat_close(&env, llh);
        rc = llog_cleanup(&env, ctxt);
        if (rc)
                CERROR("can't cleanup llog: %d\n", rc);
 out:
-       LASSERTF(d->opd_syn_rpc_in_progress == 0,
-                "%s: %d %d %sempty\n",
-                d->opd_obd->obd_name, d->opd_syn_rpc_in_progress,
-                d->opd_syn_rpc_in_flight,
-                list_empty(&d->opd_syn_committed_there) ? "" : "!");
+       LASSERTF(atomic_read(&d->opd_sync_rpcs_in_progress) == 0,
+                "%s: %d %d %sempty\n", d->opd_obd->obd_name,
+                atomic_read(&d->opd_sync_rpcs_in_progress),
+                atomic_read(&d->opd_sync_rpcs_in_flight),
+                list_empty(&d->opd_sync_committed_there) ? "" : "!");
 
        thread->t_flags = SVC_STOPPED;
 
@@ -1299,9 +1312,9 @@ static int osp_sync_llog_init(const struct lu_env *env, struct osp_device *d)
                rc = 0;
        }
 
-       CDEBUG(D_INFO, "%s: Init llog for %d - catid "DOSTID":%x\n",
+       CDEBUG(D_INFO, "%s: Init llog for %d - catid "DFID":%x\n",
               obd->obd_name, d->opd_index,
-              POSTID(&osi->osi_cid.lci_logid.lgl_oi),
+              PFID(&osi->osi_cid.lci_logid.lgl_oi.oi_fid),
               osi->osi_cid.lci_logid.lgl_ogen);
 
        rc = llog_setup(env, obd, &obd->obd_olg, LLOG_MDS_OST_ORIG_CTXT,
@@ -1346,13 +1359,13 @@ static int osp_sync_llog_init(const struct lu_env *env, struct osp_device *d)
         * put a mark in the llog till which we'll be processing
         * old records restless
         */
-       d->opd_syn_generation.mnt_cnt = cfs_time_current();
-       d->opd_syn_generation.conn_cnt = cfs_time_current();
+       d->opd_sync_generation.mnt_cnt = cfs_time_current();
+       d->opd_sync_generation.conn_cnt = cfs_time_current();
 
        osi->osi_hdr.lrh_type = LLOG_GEN_REC;
        osi->osi_hdr.lrh_len = sizeof(osi->osi_gen);
 
-       memcpy(&osi->osi_gen.lgr_gen, &d->opd_syn_generation,
+       memcpy(&osi->osi_gen.lgr_gen, &d->opd_sync_generation,
               sizeof(osi->osi_gen.lgr_gen));
 
        rc = llog_cat_add(env, lgh, &osi->osi_gen.lgr_hdr, &osi->osi_cookie);
@@ -1381,9 +1394,10 @@ static void osp_sync_llog_fini(const struct lu_env *env, struct osp_device *d)
        struct llog_ctxt *ctxt;
 
        ctxt = llog_get_context(d->opd_obd, LLOG_MDS_OST_ORIG_CTXT);
-       if (ctxt != NULL)
+       if (ctxt) {
                llog_cat_close(env, ctxt->loc_handle);
-       llog_cleanup(env, ctxt);
+               llog_cleanup(env, ctxt);
+       }
 }
 
 /**
@@ -1406,6 +1420,19 @@ int osp_sync_init(const struct lu_env *env, struct osp_device *d)
 
        ENTRY;
 
+       d->opd_sync_max_rpcs_in_flight = OSP_MAX_RPCS_IN_FLIGHT;
+       d->opd_sync_max_rpcs_in_progress = OSP_MAX_RPCS_IN_PROGRESS;
+       spin_lock_init(&d->opd_sync_lock);
+       init_waitqueue_head(&d->opd_sync_waitq);
+       init_waitqueue_head(&d->opd_sync_barrier_waitq);
+       thread_set_flags(&d->opd_sync_thread, SVC_INIT);
+       init_waitqueue_head(&d->opd_sync_thread.t_ctl_waitq);
+       INIT_LIST_HEAD(&d->opd_sync_in_flight_list);
+       INIT_LIST_HEAD(&d->opd_sync_committed_there);
+
+       if (d->opd_storage->dd_rdonly)
+               RETURN(0);
+
        rc = osp_sync_id_traction_init(d);
        if (rc)
                RETURN(rc);
@@ -1423,15 +1450,6 @@ int osp_sync_init(const struct lu_env *env, struct osp_device *d)
        /*
         * Start synchronization thread
         */
-       d->opd_syn_max_rpc_in_flight = OSP_MAX_IN_FLIGHT;
-       d->opd_syn_max_rpc_in_progress = OSP_MAX_IN_PROGRESS;
-       spin_lock_init(&d->opd_syn_lock);
-       init_waitqueue_head(&d->opd_syn_waitq);
-       init_waitqueue_head(&d->opd_syn_barrier_waitq);
-       init_waitqueue_head(&d->opd_syn_thread.t_ctl_waitq);
-       INIT_LIST_HEAD(&d->opd_syn_inflight_list);
-       INIT_LIST_HEAD(&d->opd_syn_committed_there);
-
        task = kthread_run(osp_sync_thread, d, "osp-syn-%u-%u",
                           d->opd_index, d->opd_group);
        if (IS_ERR(task)) {
@@ -1441,7 +1459,7 @@ int osp_sync_init(const struct lu_env *env, struct osp_device *d)
                GOTO(err_llog, rc);
        }
 
-       l_wait_event(d->opd_syn_thread.t_ctl_waitq,
+       l_wait_event(d->opd_sync_thread.t_ctl_waitq,
                     osp_sync_running(d) || osp_sync_stopped(d), &lwi);
 
        RETURN(0);
@@ -1463,13 +1481,15 @@ err_id:
  */
 int osp_sync_fini(struct osp_device *d)
 {
-       struct ptlrpc_thread *thread = &d->opd_syn_thread;
+       struct ptlrpc_thread *thread = &d->opd_sync_thread;
 
        ENTRY;
 
-       thread->t_flags = SVC_STOPPING;
-       wake_up(&d->opd_syn_waitq);
-       wait_event(thread->t_ctl_waitq, thread->t_flags & SVC_STOPPED);
+       if (!thread_is_init(thread) && !thread_is_stopped(thread)) {
+               thread->t_flags = SVC_STOPPING;
+               wake_up(&d->opd_sync_waitq);
+               wait_event(thread->t_ctl_waitq, thread_is_stopped(thread));
+       }
 
        /*
         * unregister transaction callbacks only when sync thread
@@ -1507,14 +1527,14 @@ static void osp_sync_tracker_commit_cb(struct thandle *th, void *cookie)
 
        spin_lock(&tr->otr_lock);
        if (likely(txn->oti_current_id > tr->otr_committed_id)) {
-               CDEBUG(D_OTHER, "committed: "LPU64" -> "LPU64"\n",
+               CDEBUG(D_OTHER, "committed: %llu -> %llu\n",
                       tr->otr_committed_id, txn->oti_current_id);
                tr->otr_committed_id = txn->oti_current_id;
 
                list_for_each_entry(d, &tr->otr_wakeup_list,
-                                   opd_syn_ontrack) {
-                       d->opd_syn_last_committed_id = tr->otr_committed_id;
-                       wake_up(&d->opd_syn_waitq);
+                                   opd_sync_ontrack) {
+                       d->opd_sync_last_committed_id = tr->otr_committed_id;
+                       wake_up(&d->opd_sync_waitq);
                }
        }
        spin_unlock(&tr->otr_lock);
@@ -1546,15 +1566,15 @@ static int osp_sync_id_traction_init(struct osp_device *d)
 
        LASSERT(d);
        LASSERT(d->opd_storage);
-       LASSERT(d->opd_syn_tracker == NULL);
-       INIT_LIST_HEAD(&d->opd_syn_ontrack);
+       LASSERT(d->opd_sync_tracker == NULL);
+       INIT_LIST_HEAD(&d->opd_sync_ontrack);
 
        mutex_lock(&osp_id_tracker_sem);
        list_for_each_entry(tr, &osp_id_tracker_list, otr_list) {
                if (tr->otr_dev == d->opd_storage) {
                        LASSERT(atomic_read(&tr->otr_refcount));
                        atomic_inc(&tr->otr_refcount);
-                       d->opd_syn_tracker = tr;
+                       d->opd_sync_tracker = tr;
                        found = tr;
                        break;
                }
@@ -1564,7 +1584,7 @@ static int osp_sync_id_traction_init(struct osp_device *d)
                rc = -ENOMEM;
                OBD_ALLOC_PTR(tr);
                if (tr) {
-                       d->opd_syn_tracker = tr;
+                       d->opd_sync_tracker = tr;
                        spin_lock_init(&tr->otr_lock);
                        tr->otr_dev = d->opd_storage;
                        tr->otr_next_id = 1;
@@ -1600,7 +1620,7 @@ static void osp_sync_id_traction_fini(struct osp_device *d)
        ENTRY;
 
        LASSERT(d);
-       tr = d->opd_syn_tracker;
+       tr = d->opd_sync_tracker;
        if (tr == NULL) {
                EXIT;
                return;
@@ -1614,7 +1634,7 @@ static void osp_sync_id_traction_fini(struct osp_device *d)
                LASSERT(list_empty(&tr->otr_wakeup_list));
                list_del(&tr->otr_list);
                OBD_FREE_PTR(tr);
-               d->opd_syn_tracker = NULL;
+               d->opd_sync_tracker = NULL;
        }
        mutex_unlock(&osp_id_tracker_sem);
 
@@ -1638,7 +1658,7 @@ static __u64 osp_sync_id_get(struct osp_device *d, __u64 id)
 {
        struct osp_id_tracker *tr;
 
-       tr = d->opd_syn_tracker;
+       tr = d->opd_sync_tracker;
        LASSERT(tr);
 
        /* XXX: we can improve this introducing per-cpu preallocated ids? */
@@ -1646,22 +1666,22 @@ static __u64 osp_sync_id_get(struct osp_device *d, __u64 id)
        if (OBD_FAIL_CHECK(OBD_FAIL_MDS_TRACK_OVERFLOW))
                tr->otr_next_id = 0xfffffff0;
 
-       if (unlikely(tr->otr_next_id <= d->opd_syn_last_used_id)) {
+       if (unlikely(tr->otr_next_id <= d->opd_sync_last_used_id)) {
                spin_unlock(&tr->otr_lock);
-               CERROR("%s: next "LPU64", last synced "LPU64"\n",
+               CERROR("%s: next %llu, last synced %llu\n",
                       d->opd_obd->obd_name, tr->otr_next_id,
-                      d->opd_syn_last_used_id);
+                      d->opd_sync_last_used_id);
                LBUG();
        }
 
        if (id == 0)
                id = tr->otr_next_id++;
-       if (id > d->opd_syn_last_used_id)
-               d->opd_syn_last_used_id = id;
-       if (list_empty(&d->opd_syn_ontrack))
-               list_add(&d->opd_syn_ontrack, &tr->otr_wakeup_list);
+       if (id > d->opd_sync_last_used_id)
+               d->opd_sync_last_used_id = id;
+       if (list_empty(&d->opd_sync_ontrack))
+               list_add(&d->opd_sync_ontrack, &tr->otr_wakeup_list);
        spin_unlock(&tr->otr_lock);
-       CDEBUG(D_OTHER, "new id "LPU64"\n", id);
+       CDEBUG(D_OTHER, "new id %llu\n", id);
 
        return id;
 }
@@ -1679,14 +1699,14 @@ static void osp_sync_remove_from_tracker(struct osp_device *d)
 {
        struct osp_id_tracker *tr;
 
-       tr = d->opd_syn_tracker;
+       tr = d->opd_sync_tracker;
        LASSERT(tr);
 
-       if (list_empty(&d->opd_syn_ontrack))
+       if (list_empty(&d->opd_sync_ontrack))
                return;
 
        spin_lock(&tr->otr_lock);
-       list_del_init(&d->opd_syn_ontrack);
+       list_del_init(&d->opd_sync_ontrack);
        spin_unlock(&tr->otr_lock);
 }