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LU-7902 osd: no need to set same [acm]time
[fs/lustre-release.git] / lustre / osd-zfs / osd_object.c
index fa7d1fc..f00d454 100644 (file)
 /*
  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
- */
-/*
- * Copyright (c) 2012, 2013, Intel Corporation.
- * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2015, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -68,7 +66,7 @@
 #include <sys/sa_impl.h>
 #include <sys/txg.h>
 
-static char *osd_obj_tag = "osd_object";
+char *osd_obj_tag = "osd_object";
 
 static struct dt_object_operations osd_obj_ops;
 static struct lu_object_operations osd_lu_obj_ops;
@@ -87,20 +85,20 @@ osd_object_sa_fini(struct osd_object *obj)
 }
 
 static int
-osd_object_sa_init(struct osd_object *obj, udmu_objset_t *uos)
+osd_object_sa_init(struct osd_object *obj, struct osd_device *o)
 {
        int rc;
 
        LASSERT(obj->oo_sa_hdl == NULL);
        LASSERT(obj->oo_db != NULL);
 
-       rc = -sa_handle_get(uos->os, obj->oo_db->db_object, obj,
+       rc = -sa_handle_get(o->od_os, obj->oo_db->db_object, obj,
                            SA_HDL_PRIVATE, &obj->oo_sa_hdl);
        if (rc)
                return rc;
 
        /* Cache the xattr object id, valid for the life of the object */
-       rc = -sa_lookup(obj->oo_sa_hdl, SA_ZPL_XATTR(uos), &obj->oo_xattr, 8);
+       rc = -sa_lookup(obj->oo_sa_hdl, SA_ZPL_XATTR(o), &obj->oo_xattr, 8);
        if (rc == -ENOENT) {
                obj->oo_xattr = ZFS_NO_OBJECT;
                rc = 0;
@@ -117,13 +115,13 @@ osd_object_sa_init(struct osd_object *obj, udmu_objset_t *uos)
 static void
 osd_object_sa_dirty_add(struct osd_object *obj, struct osd_thandle *oh)
 {
-       if (!cfs_list_empty(&obj->oo_sa_linkage))
+       if (!list_empty(&obj->oo_sa_linkage))
                return;
 
        down(&oh->ot_sa_lock);
        write_lock(&obj->oo_attr_lock);
-       if (likely(cfs_list_empty(&obj->oo_sa_linkage)))
-               cfs_list_add(&obj->oo_sa_linkage, &oh->ot_sa_list);
+       if (likely(list_empty(&obj->oo_sa_linkage)))
+               list_add(&obj->oo_sa_linkage, &oh->ot_sa_list);
        write_unlock(&obj->oo_attr_lock);
        up(&oh->ot_sa_lock);
 }
@@ -136,12 +134,12 @@ void osd_object_sa_dirty_rele(struct osd_thandle *oh)
        struct osd_object *obj;
 
        down(&oh->ot_sa_lock);
-       while (!cfs_list_empty(&oh->ot_sa_list)) {
-               obj = cfs_list_entry(oh->ot_sa_list.next,
-                                    struct osd_object, oo_sa_linkage);
+       while (!list_empty(&oh->ot_sa_list)) {
+               obj = list_entry(oh->ot_sa_list.next,
+                                struct osd_object, oo_sa_linkage);
                sa_spill_rele(obj->oo_sa_hdl);
                write_lock(&obj->oo_attr_lock);
-               cfs_list_del_init(&obj->oo_sa_linkage);
+               list_del_init(&obj->oo_sa_linkage);
                write_unlock(&obj->oo_attr_lock);
        }
        up(&oh->ot_sa_lock);
@@ -185,7 +183,7 @@ osd_object_sa_bulk_update(struct osd_object *obj, sa_bulk_attr_t *attrs,
 /*
  * Retrieve the attributes of a DMU object
  */
-int __osd_object_attr_get(const struct lu_env *env, udmu_objset_t *uos,
+int __osd_object_attr_get(const struct lu_env *env, struct osd_device *o,
                          struct osd_object *obj, struct lu_attr *la)
 {
        struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
@@ -197,7 +195,7 @@ int __osd_object_attr_get(const struct lu_env *env, udmu_objset_t *uos,
 
        LASSERT(obj->oo_db != NULL);
 
-       rc = -sa_handle_get(uos->os, obj->oo_db->db_object, NULL,
+       rc = -sa_handle_get(o->od_os, obj->oo_db->db_object, NULL,
                            SA_HDL_PRIVATE, &sa_hdl);
        if (rc)
                RETURN(rc);
@@ -209,15 +207,15 @@ int __osd_object_attr_get(const struct lu_env *env, udmu_objset_t *uos,
        la->la_valid |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE | LA_TYPE |
                        LA_SIZE | LA_UID | LA_GID | LA_FLAGS | LA_NLINK;
 
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(uos), NULL, osa->atime, 16);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(uos), NULL, osa->mtime, 16);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(uos), NULL, osa->ctime, 16);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(uos), NULL, &osa->mode, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(uos), NULL, &osa->size, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(uos), NULL, &osa->nlink, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(uos), NULL, &osa->uid, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(uos), NULL, &osa->gid, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(uos), NULL, &osa->flags, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(o), NULL, osa->atime, 16);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(o), NULL, osa->mtime, 16);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(o), NULL, osa->ctime, 16);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(o), NULL, &osa->mode, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(o), NULL, &osa->size, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(o), NULL, &osa->nlink, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(o), NULL, &osa->uid, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(o), NULL, &osa->gid, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(o), NULL, &osa->flags, 8);
 
        rc = -sa_bulk_lookup(sa_hdl, bulk, cnt);
        if (rc)
@@ -233,8 +231,30 @@ int __osd_object_attr_get(const struct lu_env *env, udmu_objset_t *uos,
        la->la_flags = attrs_zfs2fs(osa->flags);
        la->la_size = osa->size;
 
+       /* Try to get extra flag from LMA. Right now, only LMAI_ORPHAN
+        * flags is stored in LMA, and it is only for orphan directory */
+       if (S_ISDIR(la->la_mode) && dt_object_exists(&obj->oo_dt)) {
+               struct osd_thread_info *info = osd_oti_get(env);
+               struct lustre_mdt_attrs *lma;
+               struct lu_buf buf;
+
+               lma = (struct lustre_mdt_attrs *)info->oti_buf;
+               buf.lb_buf = lma;
+               buf.lb_len = sizeof(info->oti_buf);
+               rc = osd_xattr_get(env, &obj->oo_dt, &buf, XATTR_NAME_LMA);
+               if (rc > 0) {
+                       rc = 0;
+                       lma->lma_incompat = le32_to_cpu(lma->lma_incompat);
+                       obj->oo_lma_flags =
+                               lma_to_lustre_flags(lma->lma_incompat);
+
+               } else if (rc == -ENODATA) {
+                       rc = 0;
+               }
+       }
+
        if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode)) {
-               rc = -sa_lookup(sa_hdl, SA_ZPL_RDEV(uos), &osa->rdev, 8);
+               rc = -sa_lookup(sa_hdl, SA_ZPL_RDEV(o), &osa->rdev, 8);
                if (rc)
                        GOTO(out_bulk, rc);
                la->la_rdev = osa->rdev;
@@ -249,21 +269,19 @@ out_sa:
 }
 
 int __osd_obj2dbuf(const struct lu_env *env, objset_t *os,
-                  uint64_t oid, dmu_buf_t **dbp, void *tag)
+                  uint64_t oid, dmu_buf_t **dbp)
 {
        dmu_object_info_t *doi = &osd_oti_get(env)->oti_doi;
        int rc;
 
-       LASSERT(tag);
-
-       rc = -sa_buf_hold(os, oid, tag, dbp);
+       rc = -sa_buf_hold(os, oid, osd_obj_tag, dbp);
        if (rc)
                return rc;
 
        dmu_object_info_from_db(*dbp, doi);
        if (unlikely (oid != DMU_USERUSED_OBJECT &&
            oid != DMU_GROUPUSED_OBJECT && doi->doi_bonus_type != DMU_OT_SA)) {
-               sa_buf_rele(*dbp, tag);
+               sa_buf_rele(*dbp, osd_obj_tag);
                *dbp = NULL;
                return -EINVAL;
        }
@@ -294,10 +312,12 @@ struct lu_object *osd_object_alloc(const struct lu_env *env,
                dt_object_init(&mo->oo_dt, NULL, d);
                mo->oo_dt.do_ops = &osd_obj_ops;
                l->lo_ops = &osd_lu_obj_ops;
-               CFS_INIT_LIST_HEAD(&mo->oo_sa_linkage);
+               INIT_LIST_HEAD(&mo->oo_sa_linkage);
+               INIT_LIST_HEAD(&mo->oo_unlinked_linkage);
                init_rwsem(&mo->oo_sem);
-               sema_init(&mo->oo_guard, 1);
+               init_rwsem(&mo->oo_guard);
                rwlock_init(&mo->oo_attr_lock);
+               mo->oo_destroy = OSD_DESTROY_NONE;
                return l;
        } else {
                return NULL;
@@ -310,8 +330,7 @@ struct lu_object *osd_object_alloc(const struct lu_env *env,
 int osd_object_init0(const struct lu_env *env, struct osd_object *obj)
 {
        struct osd_device       *osd = osd_obj2dev(obj);
-       udmu_objset_t           *uos = &osd->od_objset;
-       const struct lu_fid     *fid  = lu_object_fid(&obj->oo_dt.do_lu);
+       const struct lu_fid     *fid = lu_object_fid(&obj->oo_dt.do_lu);
        int                      rc = 0;
        ENTRY;
 
@@ -320,13 +339,12 @@ int osd_object_init0(const struct lu_env *env, struct osd_object *obj)
 
        /* object exist */
 
-       rc = osd_object_sa_init(obj, uos);
+       rc = osd_object_sa_init(obj, osd);
        if (rc)
                RETURN(rc);
 
        /* cache attrs in object */
-       rc = __osd_object_attr_get(env, &osd->od_objset,
-                                  obj, &obj->oo_attr);
+       rc = __osd_object_attr_get(env, osd, obj, &obj->oo_attr);
        if (rc)
                RETURN(rc);
 
@@ -358,7 +376,7 @@ static int osd_check_lma(const struct lu_env *env, struct osd_object *obj)
        buf.lb_buf = lma;
        buf.lb_len = sizeof(info->oti_buf);
 
-       rc = osd_xattr_get(env, &obj->oo_dt, &buf, XATTR_NAME_LMA, BYPASS_CAPA);
+       rc = osd_xattr_get(env, &obj->oo_dt, &buf, XATTR_NAME_LMA);
        if (rc > 0) {
                rc = 0;
                lustre_lma_swab(lma);
@@ -402,8 +420,12 @@ static int osd_object_init(const struct lu_env *env, struct lu_object *l,
        rc = osd_fid_lookup(env, osd, lu_object_fid(l), &oid);
        if (rc == 0) {
                LASSERT(obj->oo_db == NULL);
-               rc = __osd_obj2dbuf(env, osd->od_objset.os, oid,
-                                       &obj->oo_db, osd_obj_tag);
+               rc = __osd_obj2dbuf(env, osd->od_os, oid, &obj->oo_db);
+               /* EEXIST will be returned if object is being deleted in ZFS */
+               if (rc == -EEXIST) {
+                       rc = 0;
+                       GOTO(out, rc);
+               }
                if (rc != 0) {
                        CERROR("%s: lookup "DFID"/"LPX64" failed: rc = %d\n",
                               osd->od_svname, PFID(lu_object_fid(l)), oid, rc);
@@ -439,54 +461,45 @@ static void osd_object_free(const struct lu_env *env, struct lu_object *l)
        OBD_SLAB_FREE_PTR(obj, osd_object_kmem);
 }
 
-static void __osd_declare_object_destroy(const struct lu_env *env,
-                                        struct osd_object *obj,
-                                        struct osd_thandle *oh)
+static int
+osd_object_unlinked_add(struct osd_object *obj, struct osd_thandle *oh)
 {
-       struct osd_device       *osd = osd_obj2dev(obj);
-       udmu_objset_t           *uos = &osd->od_objset;
-       dmu_buf_t               *db = obj->oo_db;
-       zap_attribute_t         *za = &osd_oti_get(env)->oti_za;
-       uint64_t                 oid = db->db_object, xid;
-       dmu_tx_t                *tx = oh->ot_tx;
-       zap_cursor_t            *zc;
-       int                      rc = 0;
-
-       dmu_tx_hold_free(tx, oid, 0, DMU_OBJECT_END);
+       int rc = -EBUSY;
 
-       /* zap holding xattrs */
-       if (obj->oo_xattr != ZFS_NO_OBJECT) {
-               oid = obj->oo_xattr;
+       LASSERT(obj->oo_destroy == OSD_DESTROY_ASYNC);
 
-               dmu_tx_hold_free(tx, oid, 0, DMU_OBJECT_END);
-
-               rc = -udmu_zap_cursor_init(&zc, uos, oid, 0);
-               if (rc)
-                       goto out;
+       /* the object is supposed to be exclusively locked by
+        * the caller (osd_object_destroy()), while the transaction
+        * (oh) is per-thread and not shared */
+       if (likely(list_empty(&obj->oo_unlinked_linkage))) {
+               list_add(&obj->oo_unlinked_linkage, &oh->ot_unlinked_list);
+               rc = 0;
+       }
 
-               while ((rc = -zap_cursor_retrieve(zc, za)) == 0) {
-                       BUG_ON(za->za_integer_length != sizeof(uint64_t));
-                       BUG_ON(za->za_num_integers != 1);
+       return rc;
+}
 
-                       rc = -zap_lookup(uos->os, obj->oo_xattr, za->za_name,
-                                        sizeof(uint64_t), 1, &xid);
-                       if (rc) {
-                               CERROR("%s: xattr lookup failed: rc = %d\n",
-                                      osd->od_svname, rc);
-                               goto out_err;
-                       }
-                       dmu_tx_hold_free(tx, xid, 0, DMU_OBJECT_END);
+/* Default to max data size covered by a level-1 indirect block */
+static unsigned long osd_sync_destroy_max_size =
+       1UL << (DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT + SPA_MAXBLOCKSHIFT);
+module_param(osd_sync_destroy_max_size, ulong, 0444);
+MODULE_PARM_DESC(osd_sync_destroy_max_size, "Maximum object size to use synchronous destroy.");
 
-                       zap_cursor_advance(zc);
-               }
-               if (rc == -ENOENT)
-                       rc = 0;
-out_err:
-               udmu_zap_cursor_fini(zc);
+static inline void
+osd_object_set_destroy_type(struct osd_object *obj)
+{
+       /*
+        * Lock-less OST_WRITE can race with OST_DESTROY, so set destroy type
+        * only once and use it consistently thereafter.
+        */
+       down_write(&obj->oo_guard);
+       if (obj->oo_destroy == OSD_DESTROY_NONE) {
+               if (obj->oo_attr.la_size <= osd_sync_destroy_max_size)
+                       obj->oo_destroy = OSD_DESTROY_SYNC;
+               else /* Larger objects are destroyed asynchronously */
+                       obj->oo_destroy = OSD_DESTROY_ASYNC;
        }
-out:
-       if (rc && tx->tx_err == 0)
-               tx->tx_err = -rc;
+       up_write(&obj->oo_guard);
 }
 
 static int osd_declare_object_destroy(const struct lu_env *env,
@@ -498,8 +511,8 @@ static int osd_declare_object_destroy(const struct lu_env *env,
        struct osd_object       *obj = osd_dt_obj(dt);
        struct osd_device       *osd = osd_obj2dev(obj);
        struct osd_thandle      *oh;
-       uint64_t                 zapid;
        int                      rc;
+       uint64_t                 zapid;
        ENTRY;
 
        LASSERT(th != NULL);
@@ -508,19 +521,18 @@ static int osd_declare_object_destroy(const struct lu_env *env,
        oh = container_of0(th, struct osd_thandle, ot_super);
        LASSERT(oh->ot_tx != NULL);
 
-       /* declare that we'll destroy the object */
-       __osd_declare_object_destroy(env, obj, oh);
-
        /* declare that we'll remove object from fid-dnode mapping */
        zapid = osd_get_name_n_idx(env, osd, fid, buf);
        dmu_tx_hold_bonus(oh->ot_tx, zapid);
-       dmu_tx_hold_zap(oh->ot_tx, zapid, 0, buf);
+       dmu_tx_hold_zap(oh->ot_tx, zapid, FALSE, buf);
+
+       osd_declare_xattrs_destroy(env, obj, oh);
 
        /* declare that we'll remove object from inode accounting ZAPs */
        dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
-       dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, 0, buf);
+       dmu_tx_hold_zap(oh->ot_tx, osd->od_iusr_oid, FALSE, buf);
        dmu_tx_hold_bonus(oh->ot_tx, osd->od_igrp_oid);
-       dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, 0, buf);
+       dmu_tx_hold_zap(oh->ot_tx, osd->od_igrp_oid, FALSE, buf);
 
        /* one less inode */
        rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
@@ -531,79 +543,21 @@ static int osd_declare_object_destroy(const struct lu_env *env,
        /* data to be truncated */
        rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
                               obj->oo_attr.la_gid, 0, oh, true, NULL, false);
-       RETURN(rc);
-}
-
-int __osd_object_free(udmu_objset_t *uos, uint64_t oid, dmu_tx_t *tx)
-{
-       LASSERT(uos->objects != 0);
-       spin_lock(&uos->lock);
-       uos->objects--;
-       spin_unlock(&uos->lock);
-
-       return -dmu_object_free(uos->os, oid, tx);
-}
-
-/*
- * Delete a DMU object
- *
- * The transaction passed to this routine must have
- * dmu_tx_hold_free(tx, oid, 0, DMU_OBJECT_END) called
- * and then assigned to a transaction group.
- *
- * This will release db and set it to NULL to prevent further dbuf releases.
- */
-static int __osd_object_destroy(const struct lu_env *env,
-                               struct osd_object *obj,
-                               dmu_tx_t *tx, void *tag)
-{
-       struct osd_device       *osd = osd_obj2dev(obj);
-       udmu_objset_t           *uos = &osd->od_objset;
-       uint64_t                 xid;
-       zap_attribute_t         *za = &osd_oti_get(env)->oti_za;
-       zap_cursor_t            *zc;
-       int                      rc;
-
-       /* Assert that the transaction has been assigned to a
-          transaction group. */
-       LASSERT(tx->tx_txg != 0);
-
-       /* zap holding xattrs */
-       if (obj->oo_xattr != ZFS_NO_OBJECT) {
-               rc = -udmu_zap_cursor_init(&zc, uos, obj->oo_xattr, 0);
-               if (rc)
-                       return rc;
-               while ((rc = -zap_cursor_retrieve(zc, za)) == 0) {
-                       BUG_ON(za->za_integer_length != sizeof(uint64_t));
-                       BUG_ON(za->za_num_integers != 1);
-
-                       rc = -zap_lookup(uos->os, obj->oo_xattr, za->za_name,
-                                        sizeof(uint64_t), 1, &xid);
-                       if (rc) {
-                               CERROR("%s: lookup xattr %s failed: rc = %d\n",
-                                      osd->od_svname, za->za_name, rc);
-                               continue;
-                       }
-                       rc = __osd_object_free(uos, xid, tx);
-                       if (rc)
-                               CERROR("%s: fetch xattr %s failed: rc = %d\n",
-                                      osd->od_svname, za->za_name, rc);
-                       zap_cursor_advance(zc);
-               }
-               udmu_zap_cursor_fini(zc);
+       if (rc)
+               RETURN(rc);
 
-               rc = __osd_object_free(uos, obj->oo_xattr, tx);
-               if (rc)
-                       CERROR("%s: freeing xattr failed: rc = %d\n",
-                              osd->od_svname, rc);
-       }
+       osd_object_set_destroy_type(obj);
+       if (obj->oo_destroy == OSD_DESTROY_SYNC)
+               dmu_tx_hold_free(oh->ot_tx, obj->oo_db->db_object,
+                                0, DMU_OBJECT_END);
+       else
+               dmu_tx_hold_zap(oh->ot_tx, osd->od_unlinkedid, TRUE, NULL);
 
-       return __osd_object_free(uos, obj->oo_db->db_object, tx);
+       RETURN(0);
 }
 
 static int osd_object_destroy(const struct lu_env *env,
-                             struct dt_object *dt,
-                             struct thandle *th)
+                             struct dt_object *dt, struct thandle *th)
 {
        char                    *buf = osd_oti_get(env)->oti_str;
        struct osd_object       *obj = osd_dt_obj(dt);
@@ -611,43 +565,86 @@ static int osd_object_destroy(const struct lu_env *env,
        const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
        struct osd_thandle      *oh;
        int                      rc;
-       uint64_t                 zapid;
+       uint64_t                 oid, zapid;
        ENTRY;
 
+       down_write(&obj->oo_guard);
+
+       if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
+               GOTO(out, rc = -ENOENT);
+
        LASSERT(obj->oo_db != NULL);
-       LASSERT(dt_object_exists(dt));
-       LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
 
        oh = container_of0(th, struct osd_thandle, ot_super);
        LASSERT(oh != NULL);
        LASSERT(oh->ot_tx != NULL);
 
-       zapid = osd_get_name_n_idx(env, osd, fid, buf);
-
        /* remove obj ref from index dir (it depends) */
-       rc = -zap_remove(osd->od_objset.os, zapid, buf, oh->ot_tx);
+       zapid = osd_get_name_n_idx(env, osd, fid, buf);
+       rc = -zap_remove(osd->od_os, zapid, buf, oh->ot_tx);
        if (rc) {
-               CERROR("%s: zap_remove() failed: rc = %d\n",
-                      osd->od_svname, rc);
+               CERROR("%s: zap_remove(%s) failed: rc = %d\n",
+                      osd->od_svname, buf, rc);
                GOTO(out, rc);
        }
 
-       /* do object accounting */
-       osd_zfs_acct_uid(env, osd, obj->oo_attr.la_uid, -1, oh);
-       osd_zfs_acct_gid(env, osd, obj->oo_attr.la_gid, -1, oh);
-
-       /* kill object */
-       rc = __osd_object_destroy(env, obj, oh->ot_tx, osd_obj_tag);
+       rc = osd_xattrs_destroy(env, obj, oh);
        if (rc) {
-               CERROR("%s: __osd_object_destroy() failed: rc = %d\n",
-                      osd->od_svname, rc);
+               CERROR("%s: cannot destroy xattrs for %s: rc = %d\n",
+                      osd->od_svname, buf, rc);
                GOTO(out, rc);
        }
 
+       /* Remove object from inode accounting. It is not fatal for the destroy
+        * operation if something goes wrong while updating accounting, but we
+        * still log an error message to notify the administrator */
+       rc = -zap_increment_int(osd->od_os, osd->od_iusr_oid,
+                               obj->oo_attr.la_uid, -1, oh->ot_tx);
+       if (rc)
+               CERROR("%s: failed to remove "DFID" from accounting ZAP for usr"
+                      " %d: rc = %d\n", osd->od_svname, PFID(fid),
+                      obj->oo_attr.la_uid, rc);
+       rc = -zap_increment_int(osd->od_os, osd->od_igrp_oid,
+                               obj->oo_attr.la_gid, -1, oh->ot_tx);
+       if (rc)
+               CERROR("%s: failed to remove "DFID" from accounting ZAP for grp"
+                      " %d: rc = %d\n", osd->od_svname, PFID(fid),
+                      obj->oo_attr.la_gid, rc);
+
+       oid = obj->oo_db->db_object;
+       if (unlikely(obj->oo_destroy == OSD_DESTROY_NONE)) {
+               /* this may happen if the destroy wasn't declared
+                * e.g. when the object is created and then destroyed
+                * in the same transaction - we don't need additional
+                * space for destroy specifically */
+               LASSERT(obj->oo_attr.la_size <= osd_sync_destroy_max_size);
+               rc = -dmu_object_free(osd->od_os, oid, oh->ot_tx);
+               if (rc)
+                       CERROR("%s: failed to free %s "LPU64": rc = %d\n",
+                              osd->od_svname, buf, oid, rc);
+       } else if (obj->oo_destroy == OSD_DESTROY_SYNC) {
+               rc = -dmu_object_free(osd->od_os, oid, oh->ot_tx);
+               if (rc)
+                       CERROR("%s: failed to free %s "LPU64": rc = %d\n",
+                              osd->od_svname, buf, oid, rc);
+       } else { /* asynchronous destroy */
+               rc = osd_object_unlinked_add(obj, oh);
+               if (rc)
+                       GOTO(out, rc);
+
+               rc = -zap_add_int(osd->od_os, osd->od_unlinkedid,
+                                 oid, oh->ot_tx);
+               if (rc)
+                       CERROR("%s: zap_add_int() failed %s "LPU64": rc = %d\n",
+                              osd->od_svname, buf, oid, rc);
+       }
+
 out:
        /* not needed in the cache anymore */
        set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
-
+       if (rc == 0)
+               obj->oo_destroyed = 1;
+       up_write(&obj->oo_guard);
        RETURN (0);
 }
 
@@ -662,7 +659,7 @@ static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
                        obj->oo_sa_xattr = NULL;
                }
                sa_buf_rele(obj->oo_db, osd_obj_tag);
-               cfs_list_del(&obj->oo_sa_linkage);
+               list_del(&obj->oo_sa_linkage);
                obj->oo_db = NULL;
        }
 }
@@ -693,7 +690,7 @@ static void osd_object_read_lock(const struct lu_env *env,
 
        LASSERT(osd_invariant(obj));
 
-       down_read(&obj->oo_sem);
+       down_read_nested(&obj->oo_sem, role);
 }
 
 static void osd_object_write_lock(const struct lu_env *env,
@@ -703,7 +700,7 @@ static void osd_object_write_lock(const struct lu_env *env,
 
        LASSERT(osd_invariant(obj));
 
-       down_write(&obj->oo_sem);
+       down_write_nested(&obj->oo_sem, role);
 }
 
 static void osd_object_read_unlock(const struct lu_env *env,
@@ -741,19 +738,25 @@ static int osd_object_write_locked(const struct lu_env *env,
 
 static int osd_attr_get(const struct lu_env *env,
                        struct dt_object *dt,
-                       struct lu_attr *attr,
-                       struct lustre_capa *capa)
+                       struct lu_attr *attr)
 {
        struct osd_object       *obj = osd_dt_obj(dt);
        uint64_t                 blocks;
        uint32_t                 blksize;
+       int                      rc = 0;
+
+       down_read(&obj->oo_guard);
+
+       if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
+               GOTO(out, rc = -ENOENT);
 
-       LASSERT(dt_object_exists(dt));
        LASSERT(osd_invariant(obj));
        LASSERT(obj->oo_db);
 
        read_lock(&obj->oo_attr_lock);
        *attr = obj->oo_attr;
+       if (obj->oo_lma_flags & LUSTRE_ORPHAN_FL)
+               attr->la_flags |= LUSTRE_ORPHAN_FL;
        read_unlock(&obj->oo_attr_lock);
 
        /* with ZFS_DEBUG zrl_add_debug() called by DB_DNODE_ENTER()
@@ -766,13 +769,16 @@ static int osd_attr_get(const struct lu_env *env,
                attr->la_size = 512 * blocks;
        /* Block size may be not set; suggest maximal I/O transfers. */
        if (blksize == 0)
-               blksize = 1ULL << SPA_MAXBLOCKSHIFT;
+               blksize = osd_spa_maxblocksize(
+                       dmu_objset_spa(osd_obj2dev(obj)->od_os));
 
        attr->la_blksize = blksize;
        attr->la_blocks = blocks;
        attr->la_valid |= LA_BLOCKS | LA_BLKSIZE;
 
-       return 0;
+out:
+       up_read(&obj->oo_guard);
+       return rc;
 }
 
 /* Simple wrapper on top of qsd API which implement quota transfer for osd
@@ -848,28 +854,31 @@ static int osd_declare_attr_set(const struct lu_env *env,
        struct osd_thandle      *oh;
        uint64_t                 bspace;
        uint32_t                 blksize;
-       int                      rc;
+       int                      rc = 0;
        ENTRY;
 
-       if (!dt_object_exists(dt)) {
-               /* XXX: sanity check that object creation is declared */
-               RETURN(0);
-       }
 
        LASSERT(handle != NULL);
        LASSERT(osd_invariant(obj));
 
        oh = container_of0(handle, struct osd_thandle, ot_super);
 
+       down_read(&obj->oo_guard);
+       if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
+               GOTO(out, rc = 0);
+
        LASSERT(obj->oo_sa_hdl != NULL);
        LASSERT(oh->ot_tx != NULL);
        dmu_tx_hold_sa(oh->ot_tx, obj->oo_sa_hdl, 0);
        if (oh->ot_tx->tx_err != 0)
-               RETURN(-oh->ot_tx->tx_err);
+               GOTO(out, rc = -oh->ot_tx->tx_err);
 
        sa_object_size(obj->oo_sa_hdl, &blksize, &bspace);
        bspace = toqb(bspace * blksize);
 
+       __osd_xattr_declare_set(env, obj, sizeof(struct lustre_mdt_attrs),
+                               XATTR_NAME_LMA, oh);
+
        if (attr && attr->la_valid & LA_UID) {
                /* account for user inode tracking ZAP update */
                dmu_tx_hold_bonus(oh->ot_tx, osd->od_iusr_oid);
@@ -882,7 +891,7 @@ static int osd_declare_attr_set(const struct lu_env *env,
                                          obj->oo_attr.la_uid, attr->la_uid,
                                          bspace, &info->oti_qi);
                        if (rc)
-                               RETURN(rc);
+                               GOTO(out, rc);
                }
        }
        if (attr && attr->la_valid & LA_GID) {
@@ -897,11 +906,13 @@ static int osd_declare_attr_set(const struct lu_env *env,
                                          obj->oo_attr.la_gid, attr->la_gid,
                                          bspace, &info->oti_qi);
                        if (rc)
-                               RETURN(rc);
+                               GOTO(out, rc);
                }
        }
 
-       RETURN(0);
+out:
+       up_read(&obj->oo_guard);
+       RETURN(rc);
 }
 
 /*
@@ -912,21 +923,25 @@ static int osd_declare_attr_set(const struct lu_env *env,
  * to a transaction group.
  */
 static int osd_attr_set(const struct lu_env *env, struct dt_object *dt,
-                       const struct lu_attr *la, struct thandle *handle,
-                       struct lustre_capa *capa)
+                       const struct lu_attr *la, struct thandle *handle)
 {
+       struct osd_thread_info  *info = osd_oti_get(env);
        struct osd_object       *obj = osd_dt_obj(dt);
        struct osd_device       *osd = osd_obj2dev(obj);
-       udmu_objset_t           *uos = &osd->od_objset;
        struct osd_thandle      *oh;
-       struct osa_attr         *osa = &osd_oti_get(env)->oti_osa;
+       struct osa_attr         *osa = &info->oti_osa;
        sa_bulk_attr_t          *bulk;
+       __u64                    valid = la->la_valid;
        int                      cnt;
        int                      rc = 0;
 
        ENTRY;
+
+       down_read(&obj->oo_guard);
+       if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
+               GOTO(out, rc = -ENOENT);
+
        LASSERT(handle != NULL);
-       LASSERT(dt_object_exists(dt));
        LASSERT(osd_invariant(obj));
        LASSERT(obj->oo_sa_hdl);
 
@@ -935,89 +950,157 @@ static int osd_attr_set(const struct lu_env *env, struct dt_object *dt,
           transaction group. */
        LASSERT(oh->ot_tx->tx_txg != 0);
 
-       if (la->la_valid == 0)
-               RETURN(0);
+       /* Only allow set size for regular file */
+       if (!S_ISREG(dt->do_lu.lo_header->loh_attr))
+               valid &= ~(LA_SIZE | LA_BLOCKS);
+
+       if (valid & LA_CTIME && la->la_ctime == obj->oo_attr.la_ctime)
+               valid &= ~LA_CTIME;
+
+       if (valid & LA_MTIME && la->la_mtime == obj->oo_attr.la_mtime)
+               valid &= ~LA_MTIME;
+
+       if (valid & LA_ATIME && la->la_atime == obj->oo_attr.la_atime)
+               valid &= ~LA_ATIME;
+
+       if (valid == 0)
+               GOTO(out, rc = 0);
+
+       if (valid & LA_FLAGS) {
+               struct lustre_mdt_attrs *lma;
+               struct lu_buf buf;
+
+               if (la->la_flags & LUSTRE_LMA_FL_MASKS) {
+                       CLASSERT(sizeof(info->oti_buf) >= sizeof(*lma));
+                       lma = (struct lustre_mdt_attrs *)&info->oti_buf;
+                       buf.lb_buf = lma;
+                       buf.lb_len = sizeof(info->oti_buf);
+                       rc = osd_xattr_get(env, &obj->oo_dt, &buf,
+                                          XATTR_NAME_LMA);
+                       if (rc > 0) {
+                               lma->lma_incompat =
+                                       le32_to_cpu(lma->lma_incompat);
+                               lma->lma_incompat |=
+                                       lustre_to_lma_flags(la->la_flags);
+                               lma->lma_incompat =
+                                       cpu_to_le32(lma->lma_incompat);
+                               buf.lb_buf = lma;
+                               buf.lb_len = sizeof(*lma);
+                               rc = osd_xattr_set_internal(env, obj, &buf,
+                                                           XATTR_NAME_LMA,
+                                                           LU_XATTR_REPLACE,
+                                                           oh);
+                       }
+                       if (rc < 0) {
+                               CWARN("%s: failed to set LMA flags: rc = %d\n",
+                                      osd->od_svname, rc);
+                               RETURN(rc);
+                       }
+               }
+       }
 
        OBD_ALLOC(bulk, sizeof(sa_bulk_attr_t) * 10);
        if (bulk == NULL)
-               RETURN(-ENOMEM);
+               GOTO(out, rc = -ENOMEM);
 
        /* do both accounting updates outside oo_attr_lock below */
-       if ((la->la_valid & LA_UID) && (la->la_uid != obj->oo_attr.la_uid)) {
-               /* do object accounting */
-               osd_zfs_acct_uid(env, osd, la->la_uid, 1, oh);
-               osd_zfs_acct_uid(env, osd, obj->oo_attr.la_uid, -1, oh);
+       if ((valid & LA_UID) && (la->la_uid != obj->oo_attr.la_uid)) {
+               /* Update user accounting. Failure isn't fatal, but we still
+                * log an error message */
+               rc = -zap_increment_int(osd->od_os, osd->od_iusr_oid,
+                                       la->la_uid, 1, oh->ot_tx);
+               if (rc)
+                       CERROR("%s: failed to update accounting ZAP for user "
+                               "%d (%d)\n", osd->od_svname, la->la_uid, rc);
+               rc = -zap_increment_int(osd->od_os, osd->od_iusr_oid,
+                                       obj->oo_attr.la_uid, -1, oh->ot_tx);
+               if (rc)
+                       CERROR("%s: failed to update accounting ZAP for user "
+                               "%d (%d)\n", osd->od_svname,
+                               obj->oo_attr.la_uid, rc);
        }
-       if ((la->la_valid & LA_GID) && (la->la_gid != obj->oo_attr.la_gid)) {
-               /* do object accounting */
-               osd_zfs_acct_gid(env, osd, la->la_gid, 1, oh);
-               osd_zfs_acct_gid(env, osd, obj->oo_attr.la_gid, -1, oh);
+       if ((valid & LA_GID) && (la->la_gid != obj->oo_attr.la_gid)) {
+               /* Update group accounting. Failure isn't fatal, but we still
+                * log an error message */
+               rc = -zap_increment_int(osd->od_os, osd->od_igrp_oid,
+                                       la->la_gid, 1, oh->ot_tx);
+               if (rc)
+                       CERROR("%s: failed to update accounting ZAP for user "
+                               "%d (%d)\n", osd->od_svname, la->la_gid, rc);
+               rc = -zap_increment_int(osd->od_os, osd->od_igrp_oid,
+                                       obj->oo_attr.la_gid, -1, oh->ot_tx);
+               if (rc)
+                       CERROR("%s: failed to update accounting ZAP for user "
+                               "%d (%d)\n", osd->od_svname,
+                               obj->oo_attr.la_gid, rc);
        }
 
        write_lock(&obj->oo_attr_lock);
        cnt = 0;
-       if (la->la_valid & LA_ATIME) {
+       if (valid & LA_ATIME) {
                osa->atime[0] = obj->oo_attr.la_atime = la->la_atime;
-               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(uos), NULL,
+               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(osd), NULL,
                                 osa->atime, 16);
        }
-       if (la->la_valid & LA_MTIME) {
+       if (valid & LA_MTIME) {
                osa->mtime[0] = obj->oo_attr.la_mtime = la->la_mtime;
-               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(uos), NULL,
+               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(osd), NULL,
                                 osa->mtime, 16);
        }
-       if (la->la_valid & LA_CTIME) {
+       if (valid & LA_CTIME) {
                osa->ctime[0] = obj->oo_attr.la_ctime = la->la_ctime;
-               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(uos), NULL,
+               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(osd), NULL,
                                 osa->ctime, 16);
        }
-       if (la->la_valid & LA_MODE) {
+       if (valid & LA_MODE) {
                /* mode is stored along with type, so read it first */
                obj->oo_attr.la_mode = (obj->oo_attr.la_mode & S_IFMT) |
                        (la->la_mode & ~S_IFMT);
                osa->mode = obj->oo_attr.la_mode;
-               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(uos), NULL,
+               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(osd), NULL,
                                 &osa->mode, 8);
        }
-       if (la->la_valid & LA_SIZE) {
+       if (valid & LA_SIZE) {
                osa->size = obj->oo_attr.la_size = la->la_size;
-               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(uos), NULL,
+               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(osd), NULL,
                                 &osa->size, 8);
        }
-       if (la->la_valid & LA_NLINK) {
+       if (valid & LA_NLINK) {
                osa->nlink = obj->oo_attr.la_nlink = la->la_nlink;
-               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(uos), NULL,
+               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(osd), NULL,
                                 &osa->nlink, 8);
        }
-       if (la->la_valid & LA_RDEV) {
+       if (valid & LA_RDEV) {
                osa->rdev = obj->oo_attr.la_rdev = la->la_rdev;
-               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(uos), NULL,
+               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(osd), NULL,
                                 &osa->rdev, 8);
        }
-       if (la->la_valid & LA_FLAGS) {
+       if (valid & LA_FLAGS) {
                osa->flags = attrs_fs2zfs(la->la_flags);
                /* many flags are not supported by zfs, so ensure a good cached
                 * copy */
                obj->oo_attr.la_flags = attrs_zfs2fs(osa->flags);
-               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(uos), NULL,
+               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(osd), NULL,
                                 &osa->flags, 8);
        }
-       if (la->la_valid & LA_UID) {
+       if (valid & LA_UID) {
                osa->uid = obj->oo_attr.la_uid = la->la_uid;
-               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(uos), NULL,
+               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(osd), NULL,
                                 &osa->uid, 8);
        }
-       if (la->la_valid & LA_GID) {
+       if (valid & LA_GID) {
                osa->gid = obj->oo_attr.la_gid = la->la_gid;
-               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(uos), NULL,
+               SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(osd), NULL,
                                 &osa->gid, 8);
        }
-       obj->oo_attr.la_valid |= la->la_valid;
+       obj->oo_attr.la_valid |= valid;
        write_unlock(&obj->oo_attr_lock);
 
        rc = osd_object_sa_bulk_update(obj, bulk, cnt, oh);
 
        OBD_FREE(bulk, sizeof(sa_bulk_attr_t) * 10);
+out:
+       up_read(&obj->oo_guard);
        RETURN(rc);
 }
 
@@ -1033,7 +1116,6 @@ static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
 {
        LASSERT(ah);
 
-       memset(ah, 0, sizeof(*ah));
        ah->dah_parent = parent;
        ah->dah_mode = child_mode;
 }
@@ -1073,6 +1155,7 @@ static int osd_declare_object_create(const struct lu_env *env,
 
        switch (dof->dof_type) {
                case DFT_DIR:
+                       dt->do_index_ops = &osd_dir_ops;
                case DFT_INDEX:
                        /* for zap create */
                        dmu_tx_hold_zap(oh->ot_tx, DMU_NEW_OBJECT, 1, NULL);
@@ -1110,8 +1193,9 @@ static int osd_declare_object_create(const struct lu_env *env,
        RETURN(rc);
 }
 
-int __osd_attr_init(const struct lu_env *env, udmu_objset_t *uos, uint64_t oid,
-                   dmu_tx_t *tx, struct lu_attr *la, uint64_t parent)
+int __osd_attr_init(const struct lu_env *env, struct osd_device *osd,
+                   uint64_t oid, dmu_tx_t *tx, struct lu_attr *la,
+                   uint64_t parent)
 {
        sa_bulk_attr_t  *bulk;
        sa_handle_t     *sa_hdl;
@@ -1139,7 +1223,7 @@ int __osd_attr_init(const struct lu_env *env, udmu_objset_t *uos, uint64_t oid,
        osa->size  = la->la_size;
 
        /* Now add in all of the "SA" attributes */
-       rc = -sa_handle_get(uos->os, oid, NULL, SA_HDL_PRIVATE, &sa_hdl);
+       rc = -sa_handle_get(osd->od_os, oid, NULL, SA_HDL_PRIVATE, &sa_hdl);
        if (rc)
                return rc;
 
@@ -1159,19 +1243,19 @@ int __osd_attr_init(const struct lu_env *env, udmu_objset_t *uos, uint64_t oid,
         * work around the problem. See ORI-610.
         */
        cnt = 0;
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(uos), NULL, &osa->mode, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(uos), NULL, &osa->size, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GEN(uos), NULL, &gen, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(uos), NULL, &osa->uid, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(uos), NULL, &osa->gid, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_PARENT(uos), NULL, &parent, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(uos), NULL, &osa->flags, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(uos), NULL, osa->atime, 16);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(uos), NULL, osa->mtime, 16);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(uos), NULL, osa->ctime, 16);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CRTIME(uos), NULL, crtime, 16);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(uos), NULL, &osa->nlink, 8);
-       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(uos), NULL, &osa->rdev, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(osd), NULL, &osa->mode, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(osd), NULL, &osa->size, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GEN(osd), NULL, &gen, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(osd), NULL, &osa->uid, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(osd), NULL, &osa->gid, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_PARENT(osd), NULL, &parent, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(osd), NULL, &osa->flags, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(osd), NULL, osa->atime, 16);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(osd), NULL, osa->mtime, 16);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(osd), NULL, osa->ctime, 16);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CRTIME(osd), NULL, crtime, 16);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(osd), NULL, &osa->nlink, 8);
+       SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(osd), NULL, &osa->rdev, 8);
 
        rc = -sa_replace_all_by_template(sa_hdl, bulk, cnt, tx);
 
@@ -1186,34 +1270,45 @@ out:
  * dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT) called and then assigned
  * to a transaction group.
  */
-int __osd_object_create(const struct lu_env *env, udmu_objset_t *uos,
+int __osd_object_create(const struct lu_env *env, struct osd_object *obj,
                        dmu_buf_t **dbp, dmu_tx_t *tx, struct lu_attr *la,
-                       uint64_t parent, void *tag)
+                       uint64_t parent)
 {
-       uint64_t oid;
-       int      rc;
-
-       LASSERT(tag);
-       spin_lock(&uos->lock);
-       uos->objects++;
-       spin_unlock(&uos->lock);
+       uint64_t             oid;
+       int                  rc;
+       struct osd_device   *osd = osd_obj2dev(obj);
+       const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
+       dmu_object_type_t    type = DMU_OT_PLAIN_FILE_CONTENTS;
 
        /* Assert that the transaction has been assigned to a
           transaction group. */
        LASSERT(tx->tx_txg != 0);
 
+       /* Use DMU_OTN_UINT8_METADATA for local objects so their data blocks
+        * would get an additional ditto copy */
+       if (unlikely(S_ISREG(la->la_mode) &&
+                    fid_seq_is_local_file(fid_seq(fid))))
+               type = DMU_OTN_UINT8_METADATA;
+
        /* Create a new DMU object. */
-       oid = dmu_object_alloc(uos->os, DMU_OT_PLAIN_FILE_CONTENTS, 0,
+       oid = dmu_object_alloc(osd->od_os, type, 0,
                               DMU_OT_SA, DN_MAX_BONUSLEN, tx);
-       rc = -sa_buf_hold(uos->os, oid, tag, dbp);
-       if (rc)
-               return rc;
+       rc = -sa_buf_hold(osd->od_os, oid, osd_obj_tag, dbp);
+       LASSERTF(rc == 0, "sa_buf_hold "LPU64" failed: %d\n", oid, rc);
 
        LASSERT(la->la_valid & LA_MODE);
        la->la_size = 0;
        la->la_nlink = 1;
 
-       return __osd_attr_init(env, uos, oid, tx, la, parent);
+       rc = __osd_attr_init(env, osd, oid, tx, la, parent);
+       if (rc != 0) {
+               sa_buf_rele(*dbp, osd_obj_tag);
+               *dbp = NULL;
+               dmu_object_free(osd->od_os, oid, tx);
+               return rc;
+       }
+
+       return 0;
 }
 
 /*
@@ -1226,29 +1321,24 @@ int __osd_object_create(const struct lu_env *env, udmu_objset_t *uos,
  * will also require a FAT ZAP.  If there is a new type of micro ZAP created
  * then we might need to re-evaluate the use of this flag and instead do
  * a conversion from the different internal ZAP hash formats being used. */
-int __osd_zap_create(const struct lu_env *env, udmu_objset_t *uos,
+int __osd_zap_create(const struct lu_env *env, struct osd_device *osd,
                     dmu_buf_t **zap_dbp, dmu_tx_t *tx,
-                    struct lu_attr *la, uint64_t parent,
-                    void *tag, zap_flags_t flags)
+                    struct lu_attr *la, uint64_t parent, zap_flags_t flags)
 {
        uint64_t oid;
        int      rc;
 
-       LASSERT(tag);
-
-       spin_lock(&uos->lock);
-       uos->objects++;
-       spin_unlock(&uos->lock);
-
        /* Assert that the transaction has been assigned to a
           transaction group. */
        LASSERT(tx->tx_txg != 0);
 
-       oid = zap_create_flags(uos->os, 0, flags | ZAP_FLAG_HASH64,
-                              DMU_OT_DIRECTORY_CONTENTS, 12, 12,
+       oid = zap_create_flags(osd->od_os, 0, flags | ZAP_FLAG_HASH64,
+                              DMU_OT_DIRECTORY_CONTENTS,
+                              14, /* == ZFS fzap_default_block_shift */
+                              DN_MAX_INDBLKSHIFT, /* indirect block shift */
                               DMU_OT_SA, DN_MAX_BONUSLEN, tx);
 
-       rc = -sa_buf_hold(uos->os, oid, tag, zap_dbp);
+       rc = -sa_buf_hold(osd->od_os, oid, osd_obj_tag, zap_dbp);
        if (rc)
                return rc;
 
@@ -1256,10 +1346,10 @@ int __osd_zap_create(const struct lu_env *env, udmu_objset_t *uos,
        la->la_size = 2;
        la->la_nlink = 1;
 
-       return __osd_attr_init(env, uos, oid, tx, la, parent);
+       return __osd_attr_init(env, osd, oid, tx, la, parent);
 }
 
-static dmu_buf_t *osd_mkidx(const struct lu_env *env, struct osd_device *osd,
+static dmu_buf_t *osd_mkidx(const struct lu_env *env, struct osd_object *obj,
                            struct lu_attr *la, uint64_t parent,
                            struct osd_thandle *oh)
 {
@@ -1271,14 +1361,14 @@ static dmu_buf_t *osd_mkidx(const struct lu_env *env, struct osd_device *osd,
         * We set ZAP_FLAG_UINT64_KEY to let ZFS know than we are going to use
         * binary keys */
        LASSERT(S_ISREG(la->la_mode));
-       rc = __osd_zap_create(env, &osd->od_objset, &db, oh->ot_tx, la,
-                             parent, osd_obj_tag, ZAP_FLAG_UINT64_KEY);
+       rc = __osd_zap_create(env, osd_obj2dev(obj), &db, oh->ot_tx, la, parent,
+                             ZAP_FLAG_UINT64_KEY);
        if (rc)
                return ERR_PTR(rc);
        return db;
 }
 
-static dmu_buf_t *osd_mkdir(const struct lu_env *env, struct osd_device *osd,
+static dmu_buf_t *osd_mkdir(const struct lu_env *env, struct osd_object *obj,
                            struct lu_attr *la, uint64_t parent,
                            struct osd_thandle *oh)
 {
@@ -1286,34 +1376,36 @@ static dmu_buf_t *osd_mkdir(const struct lu_env *env, struct osd_device *osd,
        int        rc;
 
        LASSERT(S_ISDIR(la->la_mode));
-       rc = __osd_zap_create(env, &osd->od_objset, &db, oh->ot_tx, la,
-                             parent, osd_obj_tag, 0);
+       rc = __osd_zap_create(env, osd_obj2dev(obj), &db,
+                             oh->ot_tx, la, parent, 0);
        if (rc)
                return ERR_PTR(rc);
        return db;
 }
 
-static dmu_buf_t* osd_mkreg(const struct lu_env *env, struct osd_device *osd,
+static dmu_buf_t *osd_mkreg(const struct lu_env *env, struct osd_object *obj,
                            struct lu_attr *la, uint64_t parent,
                            struct osd_thandle *oh)
 {
-       dmu_buf_t *db;
-       int         rc;
+       dmu_buf_t         *db;
+       int                rc;
+       struct osd_device *osd = osd_obj2dev(obj);
 
        LASSERT(S_ISREG(la->la_mode));
-       rc = __osd_object_create(env, &osd->od_objset, &db, oh->ot_tx, la,
-                                parent, osd_obj_tag);
+       rc = __osd_object_create(env, obj, &db, oh->ot_tx, la, parent);
        if (rc)
                return ERR_PTR(rc);
 
        /*
-        * XXX: a hack, OST to use bigger blocksize. we need
-        * a method in OSD API to control this from OFD/MDD
+        * XXX: This heuristic is non-optimal.  It would be better to
+        * increase the blocksize up to osd->od_max_blksz during the write.
+        * This is exactly how the ZPL behaves and it ensures that the right
+        * blocksize is selected based on the file size rather than the
+        * making broad assumptions based on the osd type.
         */
        if (!lu_device_is_md(osd2lu_dev(osd))) {
-               rc = -dmu_object_set_blocksize(osd->od_objset.os,
-                                              db->db_object,
-                               128 << 10, 0, oh->ot_tx);
+               rc = -dmu_object_set_blocksize(osd->od_os, db->db_object,
+                                              osd->od_max_blksz, 0, oh->ot_tx);
                if (unlikely(rc)) {
                        CERROR("%s: can't change blocksize: %d\n",
                               osd->od_svname, rc);
@@ -1324,7 +1416,7 @@ static dmu_buf_t* osd_mkreg(const struct lu_env *env, struct osd_device *osd,
        return db;
 }
 
-static dmu_buf_t *osd_mksym(const struct lu_env *env, struct osd_device *osd,
+static dmu_buf_t *osd_mksym(const struct lu_env *env, struct osd_object *obj,
                            struct lu_attr *la, uint64_t parent,
                            struct osd_thandle *oh)
 {
@@ -1332,14 +1424,13 @@ static dmu_buf_t *osd_mksym(const struct lu_env *env, struct osd_device *osd,
        int        rc;
 
        LASSERT(S_ISLNK(la->la_mode));
-       rc = __osd_object_create(env, &osd->od_objset, &db, oh->ot_tx, la,
-                                parent, osd_obj_tag);
+       rc = __osd_object_create(env, obj, &db, oh->ot_tx, la, parent);
        if (rc)
                return ERR_PTR(rc);
        return db;
 }
 
-static dmu_buf_t *osd_mknod(const struct lu_env *env, struct osd_device *osd,
+static dmu_buf_t *osd_mknod(const struct lu_env *env, struct osd_object *obj,
                            struct lu_attr *la, uint64_t parent,
                            struct osd_thandle *oh)
 {
@@ -1350,15 +1441,14 @@ static dmu_buf_t *osd_mknod(const struct lu_env *env, struct osd_device *osd,
        if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode))
                la->la_valid |= LA_RDEV;
 
-       rc = __osd_object_create(env, &osd->od_objset, &db, oh->ot_tx, la,
-                                parent, osd_obj_tag);
+       rc = __osd_object_create(env, obj, &db, oh->ot_tx, la, parent);
        if (rc)
                return ERR_PTR(rc);
        return db;
 }
 
 typedef dmu_buf_t *(*osd_obj_type_f)(const struct lu_env *env,
-                                    struct osd_device *osd,
+                                    struct osd_object *obj,
                                     struct lu_attr *la,
                                     uint64_t parent,
                                     struct osd_thandle *oh);
@@ -1407,7 +1497,7 @@ static inline int osd_init_lma(const struct lu_env *env, struct osd_object *obj,
        buf.lb_len = sizeof(*lma);
 
        rc = osd_xattr_set_internal(env, obj, &buf, XATTR_NAME_LMA,
-                                   LU_XATTR_CREATE, oh, BYPASS_CAPA);
+                                   LU_XATTR_CREATE, oh);
 
        return rc;
 }
@@ -1436,10 +1526,12 @@ static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
        /* concurrent create declarations should not see
         * the object inconsistent (db, attr, etc).
         * in regular cases acquisition should be cheap */
-       down(&obj->oo_guard);
+       down_write(&obj->oo_guard);
+
+       if (unlikely(dt_object_exists(dt)))
+               GOTO(out, rc = -EEXIST);
 
        LASSERT(osd_invariant(obj));
-       LASSERT(!dt_object_exists(dt));
        LASSERT(dof != NULL);
 
        LASSERT(th != NULL);
@@ -1454,10 +1546,11 @@ static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
        /* to follow ZFS on-disk format we need
         * to initialize parent dnode properly */
        zapid = 0;
-       if (hint && hint->dah_parent)
+       if (hint != NULL && hint->dah_parent != NULL &&
+           !dt_object_remote(hint->dah_parent))
                zapid = osd_dt_obj(hint->dah_parent)->oo_db->db_object;
 
-       db = osd_create_type_f(dof->dof_type)(env, osd, attr, zapid, oh);
+       db = osd_create_type_f(dof->dof_type)(env, obj, attr, zapid, oh);
        if (IS_ERR(db))
                GOTO(out, rc = PTR_ERR(db));
 
@@ -1467,15 +1560,24 @@ static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
 
        zapid = osd_get_name_n_idx(env, osd, fid, buf);
 
-       rc = -zap_add(osd->od_objset.os, zapid, buf, 8, 1, zde, oh->ot_tx);
+       rc = -zap_add(osd->od_os, zapid, buf, 8, 1, zde, oh->ot_tx);
        if (rc)
                GOTO(out, rc);
 
        /* Add new object to inode accounting.
         * Errors are not considered as fatal */
-       /* XXX: UID/GID must be defined otherwise we can break accounting */
-       osd_zfs_acct_uid(env, osd, attr->la_uid, 1, oh);
-       osd_zfs_acct_gid(env, osd, attr->la_gid, 1, oh);
+       rc = -zap_increment_int(osd->od_os, osd->od_iusr_oid,
+                               (attr->la_valid & LA_UID) ? attr->la_uid : 0, 1,
+                               oh->ot_tx);
+       if (rc)
+               CERROR("%s: failed to add "DFID" to accounting ZAP for usr %d "
+                       "(%d)\n", osd->od_svname, PFID(fid), attr->la_uid, rc);
+       rc = -zap_increment_int(osd->od_os, osd->od_igrp_oid,
+                               (attr->la_valid & LA_GID) ? attr->la_gid : 0, 1,
+                               oh->ot_tx);
+       if (rc)
+               CERROR("%s: failed to add "DFID" to accounting ZAP for grp %d "
+                       "(%d)\n", osd->od_svname, PFID(fid), attr->la_gid, rc);
 
        /* configure new osd object */
        obj->oo_db = db;
@@ -1484,15 +1586,12 @@ static int osd_object_create(const struct lu_env *env, struct dt_object *dt,
        LASSERT(osd_invariant(obj));
 
        rc = osd_init_lma(env, obj, fid, oh);
-       if (rc) {
+       if (rc != 0)
                CERROR("%s: can not set LMA on "DFID": rc = %d\n",
                       osd->od_svname, PFID(fid), rc);
-               /* ignore errors during LMA initialization */
-               rc = 0;
-       }
 
 out:
-       up(&obj->oo_guard);
+       up_write(&obj->oo_guard);
        RETURN(rc);
 }
 
@@ -1513,14 +1612,16 @@ static int osd_object_ref_add(const struct lu_env *env,
        struct osd_object       *obj = osd_dt_obj(dt);
        struct osd_thandle      *oh;
        struct osd_device       *osd = osd_obj2dev(obj);
-       udmu_objset_t           *uos = &osd->od_objset;
        uint64_t                 nlink;
        int rc;
 
        ENTRY;
 
+       down_read(&obj->oo_guard);
+       if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
+               GOTO(out, rc = -ENOENT);
+
        LASSERT(osd_invariant(obj));
-       LASSERT(dt_object_exists(dt));
        LASSERT(obj->oo_sa_hdl != NULL);
 
        oh = container_of0(handle, struct osd_thandle, ot_super);
@@ -1529,8 +1630,11 @@ static int osd_object_ref_add(const struct lu_env *env,
        nlink = ++obj->oo_attr.la_nlink;
        write_unlock(&obj->oo_attr_lock);
 
-       rc = osd_object_sa_update(obj, SA_ZPL_LINKS(uos), &nlink, 8, oh);
-       return rc;
+       rc = osd_object_sa_update(obj, SA_ZPL_LINKS(osd), &nlink, 8, oh);
+
+out:
+       up_read(&obj->oo_guard);
+       RETURN(rc);
 }
 
 static int osd_declare_object_ref_del(const struct lu_env *env,
@@ -1550,14 +1654,17 @@ static int osd_object_ref_del(const struct lu_env *env,
        struct osd_object       *obj = osd_dt_obj(dt);
        struct osd_thandle      *oh;
        struct osd_device       *osd = osd_obj2dev(obj);
-       udmu_objset_t           *uos = &osd->od_objset;
        uint64_t                 nlink;
        int                      rc;
 
        ENTRY;
 
+       down_read(&obj->oo_guard);
+
+       if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
+               GOTO(out, rc = -ENOENT);
+
        LASSERT(osd_invariant(obj));
-       LASSERT(dt_object_exists(dt));
        LASSERT(obj->oo_sa_hdl != NULL);
 
        oh = container_of0(handle, struct osd_thandle, ot_super);
@@ -1567,147 +1674,11 @@ static int osd_object_ref_del(const struct lu_env *env,
        nlink = --obj->oo_attr.la_nlink;
        write_unlock(&obj->oo_attr_lock);
 
-       rc = osd_object_sa_update(obj, SA_ZPL_LINKS(uos), &nlink, 8, oh);
-       return rc;
-}
-
-static int capa_is_sane(const struct lu_env *env, struct osd_device *dev,
-                       struct lustre_capa *capa, struct lustre_capa_key *keys)
-{
-       struct osd_thread_info  *oti = osd_oti_get(env);
-       struct obd_capa         *oc;
-       int                      i, rc = 0;
-       ENTRY;
-
-       oc = capa_lookup(dev->od_capa_hash, capa, 0);
-       if (oc) {
-               if (capa_is_expired(oc)) {
-                       DEBUG_CAPA(D_ERROR, capa, "expired");
-                       rc = -ESTALE;
-               }
-               capa_put(oc);
-               RETURN(rc);
-       }
-
-       spin_lock(&capa_lock);
-       for (i = 0; i < 2; i++) {
-               if (keys[i].lk_keyid == capa->lc_keyid) {
-                       oti->oti_capa_key = keys[i];
-                       break;
-               }
-       }
-       spin_unlock(&capa_lock);
-
-       if (i == 2) {
-               DEBUG_CAPA(D_ERROR, capa, "no matched capa key");
-               RETURN(-ESTALE);
-       }
-
-       rc = capa_hmac(oti->oti_capa.lc_hmac, capa, oti->oti_capa_key.lk_key);
-       if (rc)
-               RETURN(rc);
-       if (memcmp(oti->oti_capa.lc_hmac, capa->lc_hmac, sizeof(capa->lc_hmac)))
-       {
-               DEBUG_CAPA(D_ERROR, capa, "HMAC mismatch");
-               RETURN(-EACCES);
-       }
-
-       oc = capa_add(dev->od_capa_hash, capa);
-       capa_put(oc);
-
-       RETURN(0);
-}
-
-static int osd_object_auth(const struct lu_env *env, struct dt_object *dt,
-                          struct lustre_capa *capa, __u64 opc)
-{
-       const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
-       struct osd_device       *dev = osd_dev(dt->do_lu.lo_dev);
-       int                      rc;
-
-       if (!dev->od_fl_capa)
-               return 0;
-
-       if (capa == BYPASS_CAPA)
-               return 0;
-
-       if (!capa) {
-               CERROR("no capability is provided for fid "DFID"\n", PFID(fid));
-               return -EACCES;
-       }
-
-       if (!lu_fid_eq(fid, &capa->lc_fid)) {
-               DEBUG_CAPA(D_ERROR, capa, "fid "DFID" mismatch with",PFID(fid));
-               return -EACCES;
-       }
-
-       if (!capa_opc_supported(capa, opc)) {
-               DEBUG_CAPA(D_ERROR, capa, "opc "LPX64" not supported by", opc);
-               return -EACCES;
-       }
-
-       if ((rc = capa_is_sane(env, dev, capa, dev->od_capa_keys))) {
-               DEBUG_CAPA(D_ERROR, capa, "insane (rc %d)", rc);
-               return -EACCES;
-       }
-
-       return 0;
-}
-
-static struct obd_capa *osd_capa_get(const struct lu_env *env,
-                                    struct dt_object *dt,
-                                    struct lustre_capa *old,
-                                    __u64 opc)
-{
-       struct osd_thread_info  *info = osd_oti_get(env);
-       const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
-       struct osd_object       *obj = osd_dt_obj(dt);
-       struct osd_device       *dev = osd_obj2dev(obj);
-       struct lustre_capa_key  *key = &info->oti_capa_key;
-       struct lustre_capa      *capa = &info->oti_capa;
-       struct obd_capa         *oc;
-       int                      rc;
-       ENTRY;
-
-       if (!dev->od_fl_capa)
-               RETURN(ERR_PTR(-ENOENT));
+       rc = osd_object_sa_update(obj, SA_ZPL_LINKS(osd), &nlink, 8, oh);
 
-       LASSERT(dt_object_exists(dt));
-       LASSERT(osd_invariant(obj));
-
-       /* renewal sanity check */
-       if (old && osd_object_auth(env, dt, old, opc))
-               RETURN(ERR_PTR(-EACCES));
-
-       capa->lc_fid = *fid;
-       capa->lc_opc = opc;
-       capa->lc_uid = 0;
-       capa->lc_flags = dev->od_capa_alg << 24;
-       capa->lc_timeout = dev->od_capa_timeout;
-       capa->lc_expiry = 0;
-
-       oc = capa_lookup(dev->od_capa_hash, capa, 1);
-       if (oc) {
-               LASSERT(!capa_is_expired(oc));
-               RETURN(oc);
-       }
-
-       spin_lock(&capa_lock);
-       *key = dev->od_capa_keys[1];
-       spin_unlock(&capa_lock);
-
-       capa->lc_keyid = key->lk_keyid;
-       capa->lc_expiry = cfs_time_current_sec() + dev->od_capa_timeout;
-
-       rc = capa_hmac(capa->lc_hmac, capa, key->lk_key);
-       if (rc) {
-               DEBUG_CAPA(D_ERROR, capa, "HMAC failed: %d for", rc);
-               LBUG();
-               RETURN(ERR_PTR(rc));
-       }
-
-       oc = capa_add(dev->od_capa_hash, capa);
-       RETURN(oc);
+out:
+       up_read(&obj->oo_guard);
+       RETURN(rc);
 }
 
 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt,
@@ -1720,7 +1691,7 @@ static int osd_object_sync(const struct lu_env *env, struct dt_object *dt,
         * support ZIL.  If the object tracked the txg that it was last
         * modified in, it could pass that txg here instead of "0".  Maybe
         * the changes are already committed, so no wait is needed at all? */
-       txg_wait_synced(dmu_objset_pool(osd->od_objset.os), 0ULL);
+       txg_wait_synced(dmu_objset_pool(osd->od_os), 0ULL);
 
        RETURN(0);
 }
@@ -1750,7 +1721,6 @@ static struct dt_object_operations osd_obj_ops = {
        .do_declare_xattr_del   = osd_declare_xattr_del,
        .do_xattr_del           = osd_xattr_del,
        .do_xattr_list          = osd_xattr_list,
-       .do_capa_get            = osd_capa_get,
        .do_object_sync         = osd_object_sync,
 };
 
@@ -1765,8 +1735,7 @@ static struct lu_object_operations osd_lu_obj_ops = {
 
 static int osd_otable_it_attr_get(const struct lu_env *env,
                                struct dt_object *dt,
-                               struct lu_attr *attr,
-                               struct lustre_capa *capa)
+                               struct lu_attr *attr)
 {
        attr->la_valid = 0;
        return 0;
@@ -1776,4 +1745,3 @@ static struct dt_object_operations osd_obj_otable_it_ops = {
         .do_attr_get    = osd_otable_it_attr_get,
         .do_index_try   = osd_index_try,
 };
-