lustre/osd-zfs/osd_object.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2012, 2016, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lustre/osd-zfs/osd_object.c
  33  *
  34  * Author: Alex Zhuravlev <bzzz@whamcloud.com>
  35  * Author: Mike Pershin <tappro@whamcloud.com>
  36  * Author: Johann Lombardi <johann@whamcloud.com>
  37  */
  38
  39 #define DEBUG_SUBSYSTEM S_OSD
  40
  41 #include <libcfs/libcfs.h>
  42 #include <obd_support.h>
  43 #include <lustre_net.h>
  44 #include <obd.h>
  45 #include <obd_class.h>
  46 #include <lustre_disk.h>
  47 #include <lustre_fid.h>
  48
  49 #include "osd_internal.h"
  50
  51 #include <sys/dnode.h>
  52 #include <sys/dbuf.h>
  53 #include <sys/spa.h>
  54 #include <sys/stat.h>
  55 #include <sys/zap.h>
  56 #include <sys/spa_impl.h>
  57 #include <sys/zfs_znode.h>
  58 #include <sys/dmu_tx.h>
  59 #include <sys/dmu_objset.h>
  60 #include <sys/dsl_prop.h>
  61 #include <sys/sa_impl.h>
  62 #include <sys/txg.h>
  63
  64 char *osd_obj_tag = "osd_object";
  65
  66 static struct dt_object_operations osd_obj_ops;
  67 static struct lu_object_operations osd_lu_obj_ops;
  68 extern struct dt_body_operations osd_body_ops;
  69 static struct dt_object_operations osd_obj_otable_it_ops;
  70
  71 extern struct kmem_cache *osd_object_kmem;
  72
  73 static void
  74 osd_object_sa_fini(struct osd_object *obj)
  75 {
  76         if (obj->oo_sa_hdl) {
  77                 sa_handle_destroy(obj->oo_sa_hdl);
  78                 obj->oo_sa_hdl = NULL;
  79         }
  80 }
  81
  82 static int
  83 osd_object_sa_init(struct osd_object *obj, struct osd_device *o)
  84 {
  85         int rc;
  86
  87         LASSERT(obj->oo_sa_hdl == NULL);
  88         LASSERT(obj->oo_dn != NULL);
  89
  90         rc = osd_sa_handle_get(obj);
  91         if (rc)
  92                 return rc;
  93
  94         /* Cache the xattr object id, valid for the life of the object */
  95         rc = -sa_lookup(obj->oo_sa_hdl, SA_ZPL_XATTR(o), &obj->oo_xattr, 8);
  96         if (rc == -ENOENT) {
  97                 obj->oo_xattr = ZFS_NO_OBJECT;
  98                 rc = 0;
  99         } else if (rc) {
 100                 osd_object_sa_fini(obj);
 101         }
 102
 103         return rc;
 104 }
 105
 106 /*
 107  * Add object to list of dirty objects in tx handle.
 108  */
 109 void osd_object_sa_dirty_add(struct osd_object *obj, struct osd_thandle *oh)
 110 {
 111         if (!list_empty(&obj->oo_sa_linkage))
 112                 return;
 113
 114         write_lock(&obj->oo_attr_lock);
 115         if (likely(list_empty(&obj->oo_sa_linkage)))
 116                 list_add(&obj->oo_sa_linkage, &oh->ot_sa_list);
 117         write_unlock(&obj->oo_attr_lock);
 118 }
 119
 120 /*
 121  * Release spill block dbuf hold for all dirty SAs.
 122  */
 123 void osd_object_sa_dirty_rele(const struct lu_env *env, struct osd_thandle *oh)
 124 {
 125         struct osd_object *obj;
 126
 127         while (!list_empty(&oh->ot_sa_list)) {
 128                 obj = list_entry(oh->ot_sa_list.next,
 129                                  struct osd_object, oo_sa_linkage);
 130                 write_lock(&obj->oo_attr_lock);
 131                 list_del_init(&obj->oo_sa_linkage);
 132                 write_unlock(&obj->oo_attr_lock);
 133                 if (obj->oo_late_xattr) {
 134                         /*
 135                          * take oo_guard to protect oo_sa_xattr buffer
 136                          * from concurrent update by osd_xattr_set()
 137                          */
 138                         LASSERT(oh->ot_assigned != 0);
 139                         down_write(&obj->oo_guard);
 140                         if (obj->oo_late_attr_set)
 141                                 __osd_sa_attr_init(env, obj, oh);
 142                         else if (obj->oo_late_xattr)
 143                                 __osd_sa_xattr_update(env, obj, oh);
 144                         up_write(&obj->oo_guard);
 145                 }
 146                 sa_spill_rele(obj->oo_sa_hdl);
 147         }
 148 }
 149
 150 /*
 151  * Update the SA and add the object to the dirty list.
 152  */
 153 int osd_object_sa_update(struct osd_object *obj, sa_attr_type_t type,
 154                          void *buf, uint32_t buflen, struct osd_thandle *oh)
 155 {
 156         int rc;
 157
 158         LASSERT(obj->oo_sa_hdl != NULL);
 159         LASSERT(oh->ot_tx != NULL);
 160
 161         rc = -sa_update(obj->oo_sa_hdl, type, buf, buflen, oh->ot_tx);
 162         osd_object_sa_dirty_add(obj, oh);
 163
 164         return rc;
 165 }
 166
 167 /*
 168  * Bulk update the SA and add the object to the dirty list.
 169  */
 170 static int
 171 osd_object_sa_bulk_update(struct osd_object *obj, sa_bulk_attr_t *attrs,
 172                           int count, struct osd_thandle *oh)
 173 {
 174         int rc;
 175
 176         LASSERT(obj->oo_sa_hdl != NULL);
 177         LASSERT(oh->ot_tx != NULL);
 178
 179         rc = -sa_bulk_update(obj->oo_sa_hdl, attrs, count, oh->ot_tx);
 180         osd_object_sa_dirty_add(obj, oh);
 181
 182         return rc;
 183 }
 184
 185 /*
 186  * Retrieve the attributes of a DMU object
 187  */
 188 int __osd_object_attr_get(const struct lu_env *env, struct osd_device *o,
 189                           struct osd_object *obj, struct lu_attr *la)
 190 {
 191         struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
 192         sa_bulk_attr_t  *bulk = osd_oti_get(env)->oti_attr_bulk;
 193         int              cnt = 0;
 194         int              rc;
 195         ENTRY;
 196
 197         LASSERT(obj->oo_dn != NULL);
 198
 199         la->la_valid |= LA_ATIME | LA_MTIME | LA_CTIME | LA_MODE | LA_TYPE |
 200                         LA_SIZE | LA_UID | LA_GID | LA_FLAGS | LA_NLINK;
 201
 202         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(o), NULL, osa->atime, 16);
 203         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(o), NULL, osa->mtime, 16);
 204         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(o), NULL, osa->ctime, 16);
 205         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(o), NULL, &osa->mode, 8);
 206         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(o), NULL, &osa->size, 8);
 207         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(o), NULL, &osa->nlink, 8);
 208         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(o), NULL, &osa->uid, 8);
 209         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(o), NULL, &osa->gid, 8);
 210         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(o), NULL, &osa->flags, 8);
 211         LASSERT(cnt <= ARRAY_SIZE(osd_oti_get(env)->oti_attr_bulk));
 212
 213         rc = -sa_bulk_lookup(obj->oo_sa_hdl, bulk, cnt);
 214         if (rc)
 215                 GOTO(out_sa, rc);
 216
 217         la->la_atime = osa->atime[0];
 218         la->la_mtime = osa->mtime[0];
 219         la->la_ctime = osa->ctime[0];
 220         la->la_mode = osa->mode;
 221         la->la_uid = osa->uid;
 222         la->la_gid = osa->gid;
 223         la->la_nlink = osa->nlink;
 224         la->la_flags = attrs_zfs2fs(osa->flags);
 225         la->la_size = osa->size;
 226
 227         /* Try to get extra flag from LMA. Right now, only LMAI_ORPHAN
 228          * flags is stored in LMA, and it is only for orphan directory */
 229         if (S_ISDIR(la->la_mode) && dt_object_exists(&obj->oo_dt)) {
 230                 struct osd_thread_info *info = osd_oti_get(env);
 231                 struct lustre_mdt_attrs *lma;
 232                 struct lu_buf buf;
 233
 234                 lma = (struct lustre_mdt_attrs *)info->oti_buf;
 235                 buf.lb_buf = lma;
 236                 buf.lb_len = sizeof(info->oti_buf);
 237                 rc = osd_xattr_get(env, &obj->oo_dt, &buf, XATTR_NAME_LMA);
 238                 if (rc > 0) {
 239                         rc = 0;
 240                         lma->lma_incompat = le32_to_cpu(lma->lma_incompat);
 241                         obj->oo_lma_flags =
 242                                 lma_to_lustre_flags(lma->lma_incompat);
 243
 244                 } else if (rc == -ENODATA) {
 245                         rc = 0;
 246                 }
 247         }
 248
 249         if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode)) {
 250                 rc = -sa_lookup(obj->oo_sa_hdl, SA_ZPL_RDEV(o), &osa->rdev, 8);
 251                 if (rc)
 252                         GOTO(out_sa, rc);
 253                 la->la_rdev = osa->rdev;
 254                 la->la_valid |= LA_RDEV;
 255         }
 256 out_sa:
 257
 258         RETURN(rc);
 259 }
 260
 261 int __osd_obj2dnode(objset_t *os, uint64_t oid, dnode_t **dnp)
 262 {
 263         dmu_buf_t *db;
 264         dmu_buf_impl_t *dbi;
 265         int rc;
 266
 267         rc = -dmu_bonus_hold(os, oid, osd_obj_tag, &db);
 268         if (rc)
 269                 return rc;
 270
 271         dbi = (dmu_buf_impl_t *)db;
 272         DB_DNODE_ENTER(dbi);
 273         *dnp = DB_DNODE(dbi);
 274         LASSERT(*dnp != NULL);
 275
 276         return 0;
 277 }
 278
 279 /*
 280  * Concurrency: no concurrent access is possible that early in object
 281  * life-cycle.
 282  */
 283 struct lu_object *osd_object_alloc(const struct lu_env *env,
 284                                    const struct lu_object_header *hdr,
 285                                    struct lu_device *d)
 286 {
 287         struct osd_object *mo;
 288
 289         OBD_SLAB_ALLOC_PTR_GFP(mo, osd_object_kmem, GFP_NOFS);
 290         if (mo != NULL) {
 291                 struct lu_object *l;
 292
 293                 l = &mo->oo_dt.do_lu;
 294                 dt_object_init(&mo->oo_dt, NULL, d);
 295                 mo->oo_dt.do_ops = &osd_obj_ops;
 296                 l->lo_ops = &osd_lu_obj_ops;
 297                 INIT_LIST_HEAD(&mo->oo_sa_linkage);
 298                 INIT_LIST_HEAD(&mo->oo_unlinked_linkage);
 299                 init_rwsem(&mo->oo_sem);
 300                 init_rwsem(&mo->oo_guard);
 301                 rwlock_init(&mo->oo_attr_lock);
 302                 mo->oo_destroy = OSD_DESTROY_NONE;
 303                 return l;
 304         } else {
 305                 return NULL;
 306         }
 307 }
 308
 309 /*
 310  * Concurrency: shouldn't matter.
 311  */
 312 int osd_object_init0(const struct lu_env *env, struct osd_object *obj)
 313 {
 314         struct osd_device       *osd = osd_obj2dev(obj);
 315         const struct lu_fid     *fid = lu_object_fid(&obj->oo_dt.do_lu);
 316         int                      rc = 0;
 317         ENTRY;
 318
 319         if (obj->oo_dn == NULL)
 320                 RETURN(0);
 321
 322         /* object exist */
 323
 324         rc = osd_object_sa_init(obj, osd);
 325         if (rc)
 326                 RETURN(rc);
 327
 328         /* cache attrs in object */
 329         rc = __osd_object_attr_get(env, osd, obj, &obj->oo_attr);
 330         if (rc)
 331                 RETURN(rc);
 332
 333         if (likely(!fid_is_acct(fid)))
 334                 /* no body operations for accounting objects */
 335                 obj->oo_dt.do_body_ops = &osd_body_ops;
 336
 337         /*
 338          * initialize object before marking it existing
 339          */
 340         obj->oo_dt.do_lu.lo_header->loh_attr |= obj->oo_attr.la_mode & S_IFMT;
 341
 342         smp_mb();
 343         obj->oo_dt.do_lu.lo_header->loh_attr |= LOHA_EXISTS;
 344
 345         RETURN(0);
 346 }
 347
 348 static int osd_check_lma(const struct lu_env *env, struct osd_object *obj)
 349 {
 350         struct osd_thread_info  *info = osd_oti_get(env);
 351         struct lu_buf           buf;
 352         int                     rc;
 353         struct lustre_mdt_attrs *lma;
 354         ENTRY;
 355
 356         CLASSERT(sizeof(info->oti_buf) >= sizeof(*lma));
 357         lma = (struct lustre_mdt_attrs *)info->oti_buf;
 358         buf.lb_buf = lma;
 359         buf.lb_len = sizeof(info->oti_buf);
 360
 361         rc = osd_xattr_get(env, &obj->oo_dt, &buf, XATTR_NAME_LMA);
 362         if (rc > 0) {
 363                 rc = 0;
 364                 lustre_lma_swab(lma);
 365                 if (unlikely((lma->lma_incompat & ~LMA_INCOMPAT_SUPP) ||
 366                              CFS_FAIL_CHECK(OBD_FAIL_OSD_LMA_INCOMPAT))) {
 367                         CWARN("%s: unsupported incompat LMA feature(s) %#x for "
 368                               "fid = "DFID"\n", osd_obj2dev(obj)->od_svname,
 369                               lma->lma_incompat & ~LMA_INCOMPAT_SUPP,
 370                               PFID(lu_object_fid(&obj->oo_dt.do_lu)));
 371                         rc = -EOPNOTSUPP;
 372                 }
 373         } else if (rc == -ENODATA) {
 374                 /* haven't initialize LMA xattr */
 375                 rc = 0;
 376         }
 377
 378         RETURN(rc);
 379 }
 380
 381 /**
 382  * Helper function to retrieve DMU object id from fid for accounting object
 383  */
 384 static dnode_t *osd_quota_fid2dmu(const struct osd_device *osd,
 385                                   const struct lu_fid *fid)
 386 {
 387         dnode_t *dn = NULL;
 388
 389         LASSERT(fid_is_acct(fid));
 390
 391         switch (fid_oid(fid)) {
 392         case ACCT_USER_OID:
 393                 dn = osd->od_userused_dn;
 394                 break;
 395         case ACCT_GROUP_OID:
 396                 dn = osd->od_groupused_dn;
 397                 break;
 398         default:
 399                 break;
 400         }
 401
 402         return dn;
 403 }
 404
 405 /*
 406  * Concurrency: no concurrent access is possible that early in object
 407  * life-cycle.
 408  */
 409 static int osd_object_init(const struct lu_env *env, struct lu_object *l,
 410                            const struct lu_object_conf *conf)
 411 {
 412         struct osd_object *obj = osd_obj(l);
 413         struct osd_device *osd = osd_obj2dev(obj);
 414         const struct lu_fid *fid = lu_object_fid(l);
 415         uint64_t oid;
 416         int rc = 0;
 417         ENTRY;
 418
 419         LASSERT(osd_invariant(obj));
 420
 421         if (fid_is_otable_it(&l->lo_header->loh_fid)) {
 422                 obj->oo_dt.do_ops = &osd_obj_otable_it_ops;
 423                 l->lo_header->loh_attr |= LOHA_EXISTS;
 424                 RETURN(0);
 425         }
 426
 427         if (conf != NULL && conf->loc_flags & LOC_F_NEW)
 428                 GOTO(out, rc = 0);
 429
 430         if (unlikely(fid_is_acct(fid))) {
 431                 obj->oo_dn = osd_quota_fid2dmu(osd, fid);
 432                 if (obj->oo_dn) {
 433                         obj->oo_dt.do_index_ops = &osd_acct_index_ops;
 434                         l->lo_header->loh_attr |= LOHA_EXISTS;
 435                 }
 436
 437                 GOTO(out, rc = 0);
 438         }
 439
 440         rc = osd_fid_lookup(env, osd, fid, &oid);
 441         if (rc == 0) {
 442                 LASSERT(obj->oo_dn == NULL);
 443                 rc = __osd_obj2dnode(osd->od_os, oid, &obj->oo_dn);
 444                 /* EEXIST will be returned if object is being deleted in ZFS */
 445                 if (rc == -EEXIST) {
 446                         rc = 0;
 447                         GOTO(out, rc);
 448                 }
 449                 if (rc != 0) {
 450                         CERROR("%s: lookup "DFID"/%#llx failed: rc = %d\n",
 451                                osd->od_svname, PFID(lu_object_fid(l)), oid, rc);
 452                         GOTO(out, rc);
 453                 }
 454                 LASSERT(obj->oo_dn);
 455                 rc = osd_object_init0(env, obj);
 456                 if (rc != 0)
 457                         GOTO(out, rc);
 458
 459                 rc = osd_check_lma(env, obj);
 460                 if (rc != 0)
 461                         GOTO(out, rc);
 462         } else if (rc == -ENOENT) {
 463                 rc = 0;
 464         }
 465         LASSERT(osd_invariant(obj));
 466 out:
 467         RETURN(rc);
 468 }
 469
 470 /*
 471  * Concurrency: no concurrent access is possible that late in object
 472  * life-cycle.
 473  */
 474 static void osd_object_free(const struct lu_env *env, struct lu_object *l)
 475 {
 476         struct osd_object *obj = osd_obj(l);
 477
 478         LASSERT(osd_invariant(obj));
 479
 480         dt_object_fini(&obj->oo_dt);
 481         OBD_SLAB_FREE_PTR(obj, osd_object_kmem);
 482 }
 483
 484 static int
 485 osd_object_unlinked_add(struct osd_object *obj, struct osd_thandle *oh)
 486 {
 487         int rc = -EBUSY;
 488
 489         LASSERT(obj->oo_destroy == OSD_DESTROY_ASYNC);
 490
 491         /* the object is supposed to be exclusively locked by
 492          * the caller (osd_destroy()), while the transaction
 493          * (oh) is per-thread and not shared */
 494         if (likely(list_empty(&obj->oo_unlinked_linkage))) {
 495                 list_add(&obj->oo_unlinked_linkage, &oh->ot_unlinked_list);
 496                 rc = 0;
 497         }
 498
 499         return rc;
 500 }
 501
 502 /* Default to max data size covered by a level-1 indirect block */
 503 static unsigned long osd_sync_destroy_max_size =
 504         1UL << (DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT + SPA_MAXBLOCKSHIFT);
 505 module_param(osd_sync_destroy_max_size, ulong, 0444);
 506 MODULE_PARM_DESC(osd_sync_destroy_max_size, "Maximum object size to use synchronous destroy.");
 507
 508 static inline void
 509 osd_object_set_destroy_type(struct osd_object *obj)
 510 {
 511         /*
 512          * Lock-less OST_WRITE can race with OST_DESTROY, so set destroy type
 513          * only once and use it consistently thereafter.
 514          */
 515         down_write(&obj->oo_guard);
 516         if (obj->oo_destroy == OSD_DESTROY_NONE) {
 517                 if (obj->oo_attr.la_size <= osd_sync_destroy_max_size)
 518                         obj->oo_destroy = OSD_DESTROY_SYNC;
 519                 else /* Larger objects are destroyed asynchronously */
 520                         obj->oo_destroy = OSD_DESTROY_ASYNC;
 521         }
 522         up_write(&obj->oo_guard);
 523 }
 524
 525 static int osd_declare_destroy(const struct lu_env *env, struct dt_object *dt,
 526                                struct thandle *th)
 527 {
 528         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
 529         struct osd_object       *obj = osd_dt_obj(dt);
 530         struct osd_device       *osd = osd_obj2dev(obj);
 531         struct osd_thandle      *oh;
 532         dnode_t *dn;
 533         int                      rc;
 534         uint64_t                 zapid;
 535         ENTRY;
 536
 537         LASSERT(th != NULL);
 538         LASSERT(dt_object_exists(dt));
 539
 540         oh = container_of0(th, struct osd_thandle, ot_super);
 541         LASSERT(oh->ot_tx != NULL);
 542
 543         /* declare that we'll remove object from fid-dnode mapping */
 544         zapid = osd_get_name_n_idx(env, osd, fid, NULL, 0, &dn);
 545         osd_tx_hold_zap(oh->ot_tx, zapid, dn, FALSE, NULL);
 546
 547         osd_declare_xattrs_destroy(env, obj, oh);
 548
 549         /* one less inode */
 550         rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
 551                                obj->oo_attr.la_gid, -1, oh, false, NULL, false);
 552         if (rc)
 553                 RETURN(rc);
 554
 555         /* data to be truncated */
 556         rc = osd_declare_quota(env, osd, obj->oo_attr.la_uid,
 557                                obj->oo_attr.la_gid, 0, oh, true, NULL, false);
 558         if (rc)
 559                 RETURN(rc);
 560
 561         osd_object_set_destroy_type(obj);
 562         if (obj->oo_destroy == OSD_DESTROY_SYNC)
 563                 dmu_tx_hold_free(oh->ot_tx, obj->oo_dn->dn_object,
 564                                  0, DMU_OBJECT_END);
 565         else
 566                 osd_tx_hold_zap(oh->ot_tx, osd->od_unlinked->dn_object,
 567                                 osd->od_unlinked, TRUE, NULL);
 568
 569         /* will help to find FID->ino when this object is being
 570          * added to PENDING/ */
 571         osd_idc_find_and_init(env, osd, obj);
 572
 573         RETURN(0);
 574 }
 575
 576 static int osd_destroy(const struct lu_env *env, struct dt_object *dt,
 577                        struct thandle *th)
 578 {
 579         struct osd_thread_info  *info = osd_oti_get(env);
 580         char                    *buf = info->oti_str;
 581         struct osd_object       *obj = osd_dt_obj(dt);
 582         struct osd_device       *osd = osd_obj2dev(obj);
 583         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
 584         struct osd_thandle      *oh;
 585         int                      rc;
 586         uint64_t                 oid, zapid;
 587         dnode_t *zdn;
 588         ENTRY;
 589
 590         down_write(&obj->oo_guard);
 591
 592         if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
 593                 GOTO(out, rc = -ENOENT);
 594
 595         LASSERT(obj->oo_dn != NULL);
 596
 597         oh = container_of0(th, struct osd_thandle, ot_super);
 598         LASSERT(oh != NULL);
 599         LASSERT(oh->ot_tx != NULL);
 600
 601         /* remove obj ref from index dir (it depends) */
 602         zapid = osd_get_name_n_idx(env, osd, fid, buf,
 603                                    sizeof(info->oti_str), &zdn);
 604         rc = osd_zap_remove(osd, zapid, zdn, buf, oh->ot_tx);
 605         if (rc) {
 606                 CERROR("%s: zap_remove(%s) failed: rc = %d\n",
 607                        osd->od_svname, buf, rc);
 608                 GOTO(out, rc);
 609         }
 610
 611         rc = osd_xattrs_destroy(env, obj, oh);
 612         if (rc) {
 613                 CERROR("%s: cannot destroy xattrs for %s: rc = %d\n",
 614                        osd->od_svname, buf, rc);
 615                 GOTO(out, rc);
 616         }
 617
 618         oid = obj->oo_dn->dn_object;
 619         if (unlikely(obj->oo_destroy == OSD_DESTROY_NONE)) {
 620                 /* this may happen if the destroy wasn't declared
 621                  * e.g. when the object is created and then destroyed
 622                  * in the same transaction - we don't need additional
 623                  * space for destroy specifically */
 624                 LASSERT(obj->oo_attr.la_size <= osd_sync_destroy_max_size);
 625                 rc = -dmu_object_free(osd->od_os, oid, oh->ot_tx);
 626                 if (rc)
 627                         CERROR("%s: failed to free %s %llu: rc = %d\n",
 628                                osd->od_svname, buf, oid, rc);
 629         } else if (obj->oo_destroy == OSD_DESTROY_SYNC) {
 630                 rc = -dmu_object_free(osd->od_os, oid, oh->ot_tx);
 631                 if (rc)
 632                         CERROR("%s: failed to free %s %llu: rc = %d\n",
 633                                osd->od_svname, buf, oid, rc);
 634         } else { /* asynchronous destroy */
 635                 char *key = info->oti_key;
 636
 637                 rc = osd_object_unlinked_add(obj, oh);
 638                 if (rc)
 639                         GOTO(out, rc);
 640
 641                 snprintf(key, sizeof(info->oti_key), "%llx", oid);
 642                 rc = osd_zap_add(osd, osd->od_unlinked->dn_object,
 643                                  osd->od_unlinked, key, 8, 1, &oid, oh->ot_tx);
 644                 if (rc)
 645                         CERROR("%s: zap_add_int() failed %s %llu: rc = %d\n",
 646                                osd->od_svname, buf, oid, rc);
 647         }
 648
 649 out:
 650         /* not needed in the cache anymore */
 651         set_bit(LU_OBJECT_HEARD_BANSHEE, &dt->do_lu.lo_header->loh_flags);
 652         if (rc == 0)
 653                 obj->oo_destroyed = 1;
 654         up_write(&obj->oo_guard);
 655         RETURN (0);
 656 }
 657
 658 static void osd_object_delete(const struct lu_env *env, struct lu_object *l)
 659 {
 660         struct osd_object *obj = osd_obj(l);
 661         const struct lu_fid *fid = lu_object_fid(l);
 662
 663         if (obj->oo_dn) {
 664                 if (likely(!fid_is_acct(fid))) {
 665                         osd_object_sa_fini(obj);
 666                         if (obj->oo_sa_xattr) {
 667                                 nvlist_free(obj->oo_sa_xattr);
 668                                 obj->oo_sa_xattr = NULL;
 669                         }
 670                         osd_dnode_rele(obj->oo_dn);
 671                         list_del(&obj->oo_sa_linkage);
 672                 }
 673                 obj->oo_dn = NULL;
 674         }
 675 }
 676
 677 /*
 678  * Concurrency: ->loo_object_release() is called under site spin-lock.
 679  */
 680 static void osd_object_release(const struct lu_env *env,
 681                                struct lu_object *l)
 682 {
 683 }
 684
 685 /*
 686  * Concurrency: shouldn't matter.
 687  */
 688 static int osd_object_print(const struct lu_env *env, void *cookie,
 689                             lu_printer_t p, const struct lu_object *l)
 690 {
 691         struct osd_object *o = osd_obj(l);
 692
 693         return (*p)(env, cookie, LUSTRE_OSD_ZFS_NAME"-object@%p", o);
 694 }
 695
 696 static void osd_read_lock(const struct lu_env *env, struct dt_object *dt,
 697                           unsigned role)
 698 {
 699         struct osd_object *obj = osd_dt_obj(dt);
 700
 701         LASSERT(osd_invariant(obj));
 702
 703         down_read_nested(&obj->oo_sem, role);
 704 }
 705
 706 static void osd_write_lock(const struct lu_env *env, struct dt_object *dt,
 707                            unsigned role)
 708 {
 709         struct osd_object *obj = osd_dt_obj(dt);
 710
 711         LASSERT(osd_invariant(obj));
 712
 713         down_write_nested(&obj->oo_sem, role);
 714 }
 715
 716 static void osd_read_unlock(const struct lu_env *env, struct dt_object *dt)
 717 {
 718         struct osd_object *obj = osd_dt_obj(dt);
 719
 720         LASSERT(osd_invariant(obj));
 721         up_read(&obj->oo_sem);
 722 }
 723
 724 static void osd_write_unlock(const struct lu_env *env, struct dt_object *dt)
 725 {
 726         struct osd_object *obj = osd_dt_obj(dt);
 727
 728         LASSERT(osd_invariant(obj));
 729         up_write(&obj->oo_sem);
 730 }
 731
 732 static int osd_write_locked(const struct lu_env *env, struct dt_object *dt)
 733 {
 734         struct osd_object *obj = osd_dt_obj(dt);
 735         int rc = 1;
 736
 737         LASSERT(osd_invariant(obj));
 738
 739         if (down_write_trylock(&obj->oo_sem)) {
 740                 rc = 0;
 741                 up_write(&obj->oo_sem);
 742         }
 743         return rc;
 744 }
 745
 746 static int osd_attr_get(const struct lu_env *env,
 747                         struct dt_object *dt,
 748                         struct lu_attr *attr)
 749 {
 750         struct osd_object       *obj = osd_dt_obj(dt);
 751         uint64_t                 blocks;
 752         uint32_t                 blksize;
 753         int                      rc = 0;
 754
 755         down_read(&obj->oo_guard);
 756
 757         if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
 758                 GOTO(out, rc = -ENOENT);
 759
 760         if (unlikely(fid_is_acct(lu_object_fid(&dt->do_lu))))
 761                 GOTO(out, rc = 0);
 762
 763         LASSERT(osd_invariant(obj));
 764         LASSERT(obj->oo_dn);
 765
 766         read_lock(&obj->oo_attr_lock);
 767         *attr = obj->oo_attr;
 768         if (obj->oo_lma_flags & LUSTRE_ORPHAN_FL)
 769                 attr->la_flags |= LUSTRE_ORPHAN_FL;
 770         read_unlock(&obj->oo_attr_lock);
 771
 772         /* with ZFS_DEBUG zrl_add_debug() called by DB_DNODE_ENTER()
 773          * from within sa_object_size() can block on a mutex, so
 774          * we can't call sa_object_size() holding rwlock */
 775         sa_object_size(obj->oo_sa_hdl, &blksize, &blocks);
 776         /* we do not control size of indices, so always calculate
 777          * it from number of blocks reported by DMU */
 778         if (S_ISDIR(attr->la_mode))
 779                 attr->la_size = 512 * blocks;
 780         /* Block size may be not set; suggest maximal I/O transfers. */
 781         if (blksize == 0)
 782                 blksize = osd_spa_maxblocksize(
 783                         dmu_objset_spa(osd_obj2dev(obj)->od_os));
 784
 785         attr->la_blksize = blksize;
 786         attr->la_blocks = blocks;
 787         attr->la_valid |= LA_BLOCKS | LA_BLKSIZE;
 788
 789 out:
 790         up_read(&obj->oo_guard);
 791         return rc;
 792 }
 793
 794 /* Simple wrapper on top of qsd API which implement quota transfer for osd
 795  * setattr needs. As a reminder, only the root user can change ownership of
 796  * a file, that's why EDQUOT & EINPROGRESS errors are discarded */
 797 static inline int qsd_transfer(const struct lu_env *env,
 798                                struct qsd_instance *qsd,
 799                                struct lquota_trans *trans, int qtype,
 800                                __u64 orig_id, __u64 new_id, __u64 bspace,
 801                                struct lquota_id_info *qi)
 802 {
 803         int     rc;
 804
 805         if (unlikely(qsd == NULL))
 806                 return 0;
 807
 808         LASSERT(qtype >= 0 && qtype < LL_MAXQUOTAS);
 809         qi->lqi_type = qtype;
 810
 811         /* inode accounting */
 812         qi->lqi_is_blk = false;
 813
 814         /* one more inode for the new owner ... */
 815         qi->lqi_id.qid_uid = new_id;
 816         qi->lqi_space      = 1;
 817         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 818         if (rc == -EDQUOT || rc == -EINPROGRESS)
 819                 rc = 0;
 820         if (rc)
 821                 return rc;
 822
 823         /* and one less inode for the current id */
 824         qi->lqi_id.qid_uid = orig_id;;
 825         qi->lqi_space      = -1;
 826         /* can't get EDQUOT when reducing usage */
 827         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 828         if (rc == -EINPROGRESS)
 829                 rc = 0;
 830         if (rc)
 831                 return rc;
 832
 833         /* block accounting */
 834         qi->lqi_is_blk = true;
 835
 836         /* more blocks for the new owner ... */
 837         qi->lqi_id.qid_uid = new_id;
 838         qi->lqi_space      = bspace;
 839         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 840         if (rc == -EDQUOT || rc == -EINPROGRESS)
 841                 rc = 0;
 842         if (rc)
 843                 return rc;
 844
 845         /* and finally less blocks for the current owner */
 846         qi->lqi_id.qid_uid = orig_id;
 847         qi->lqi_space      = -bspace;
 848         rc = qsd_op_begin(env, qsd, trans, qi, NULL);
 849         /* can't get EDQUOT when reducing usage */
 850         if (rc == -EINPROGRESS)
 851                 rc = 0;
 852         return rc;
 853 }
 854
 855 static int osd_declare_attr_set(const struct lu_env *env,
 856                                 struct dt_object *dt,
 857                                 const struct lu_attr *attr,
 858                                 struct thandle *handle)
 859 {
 860         struct osd_thread_info  *info = osd_oti_get(env);
 861         struct osd_object       *obj = osd_dt_obj(dt);
 862         struct osd_device       *osd = osd_obj2dev(obj);
 863         dmu_tx_hold_t           *txh;
 864         struct osd_thandle      *oh;
 865         uint64_t                 bspace;
 866         uint32_t                 blksize;
 867         int                      rc = 0;
 868         bool                     found;
 869         ENTRY;
 870
 871
 872         LASSERT(handle != NULL);
 873         LASSERT(osd_invariant(obj));
 874
 875         oh = container_of0(handle, struct osd_thandle, ot_super);
 876
 877         down_read(&obj->oo_guard);
 878         if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
 879                 GOTO(out, rc = 0);
 880
 881         LASSERT(obj->oo_sa_hdl != NULL);
 882         LASSERT(oh->ot_tx != NULL);
 883         /* regular attributes are part of the bonus buffer */
 884         /* let's check whether this object is already part of
 885          * transaction.. */
 886         found = false;
 887         for (txh = list_head(&oh->ot_tx->tx_holds); txh;
 888              txh = list_next(&oh->ot_tx->tx_holds, txh)) {
 889                 if (txh->txh_dnode == NULL)
 890                         continue;
 891                 if (txh->txh_dnode->dn_object != obj->oo_dn->dn_object)
 892                         continue;
 893                 /* this object is part of the transaction already
 894                  * we don't need to declare bonus again */
 895                 found = true;
 896                 break;
 897         }
 898         if (!found)
 899                 dmu_tx_hold_bonus(oh->ot_tx, obj->oo_dn->dn_object);
 900         if (oh->ot_tx->tx_err != 0)
 901                 GOTO(out, rc = -oh->ot_tx->tx_err);
 902
 903         if (attr && attr->la_valid & LA_FLAGS) {
 904                 /* LMA is usually a part of bonus, no need to declare
 905                  * anything else */
 906         }
 907
 908         if (attr && (attr->la_valid & (LA_UID | LA_GID))) {
 909                 sa_object_size(obj->oo_sa_hdl, &blksize, &bspace);
 910                 bspace = toqb(bspace * blksize);
 911         }
 912
 913         if (attr && attr->la_valid & LA_UID) {
 914                 /* quota enforcement for user */
 915                 if (attr->la_uid != obj->oo_attr.la_uid) {
 916                         rc = qsd_transfer(env, osd->od_quota_slave,
 917                                           &oh->ot_quota_trans, USRQUOTA,
 918                                           obj->oo_attr.la_uid, attr->la_uid,
 919                                           bspace, &info->oti_qi);
 920                         if (rc)
 921                                 GOTO(out, rc);
 922                 }
 923         }
 924         if (attr && attr->la_valid & LA_GID) {
 925                 /* quota enforcement for group */
 926                 if (attr->la_gid != obj->oo_attr.la_gid) {
 927                         rc = qsd_transfer(env, osd->od_quota_slave,
 928                                           &oh->ot_quota_trans, GRPQUOTA,
 929                                           obj->oo_attr.la_gid, attr->la_gid,
 930                                           bspace, &info->oti_qi);
 931                         if (rc)
 932                                 GOTO(out, rc);
 933                 }
 934         }
 935
 936 out:
 937         up_read(&obj->oo_guard);
 938         RETURN(rc);
 939 }
 940
 941 /*
 942  * Set the attributes of an object
 943  *
 944  * The transaction passed to this routine must have
 945  * dmu_tx_hold_bonus(tx, oid) called and then assigned
 946  * to a transaction group.
 947  */
 948 static int osd_attr_set(const struct lu_env *env, struct dt_object *dt,
 949                         const struct lu_attr *la, struct thandle *handle)
 950 {
 951         struct osd_thread_info  *info = osd_oti_get(env);
 952         sa_bulk_attr_t          *bulk = osd_oti_get(env)->oti_attr_bulk;
 953         struct osd_object       *obj = osd_dt_obj(dt);
 954         struct osd_device       *osd = osd_obj2dev(obj);
 955         struct osd_thandle      *oh;
 956         struct osa_attr         *osa = &info->oti_osa;
 957         __u64                    valid = la->la_valid;
 958         int                      cnt;
 959         int                      rc = 0;
 960
 961         ENTRY;
 962
 963         down_read(&obj->oo_guard);
 964         if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
 965                 GOTO(out, rc = -ENOENT);
 966
 967         LASSERT(handle != NULL);
 968         LASSERT(osd_invariant(obj));
 969         LASSERT(obj->oo_sa_hdl);
 970
 971         oh = container_of0(handle, struct osd_thandle, ot_super);
 972         /* Assert that the transaction has been assigned to a
 973            transaction group. */
 974         LASSERT(oh->ot_tx->tx_txg != 0);
 975
 976         /* Only allow set size for regular file */
 977         if (!S_ISREG(dt->do_lu.lo_header->loh_attr))
 978                 valid &= ~(LA_SIZE | LA_BLOCKS);
 979
 980         if (valid & LA_CTIME && la->la_ctime == obj->oo_attr.la_ctime)
 981                 valid &= ~LA_CTIME;
 982
 983         if (valid & LA_MTIME && la->la_mtime == obj->oo_attr.la_mtime)
 984                 valid &= ~LA_MTIME;
 985
 986         if (valid & LA_ATIME && la->la_atime == obj->oo_attr.la_atime)
 987                 valid &= ~LA_ATIME;
 988
 989         if (valid == 0)
 990                 GOTO(out, rc = 0);
 991
 992         if (valid & LA_FLAGS) {
 993                 struct lustre_mdt_attrs *lma;
 994                 struct lu_buf buf;
 995
 996                 if (la->la_flags & LUSTRE_LMA_FL_MASKS) {
 997                         CLASSERT(sizeof(info->oti_buf) >= sizeof(*lma));
 998                         lma = (struct lustre_mdt_attrs *)&info->oti_buf;
 999                         buf.lb_buf = lma;
1000                         buf.lb_len = sizeof(info->oti_buf);
1001                         rc = osd_xattr_get(env, &obj->oo_dt, &buf,
1002                                            XATTR_NAME_LMA);
1003                         if (rc > 0) {
1004                                 lma->lma_incompat =
1005                                         le32_to_cpu(lma->lma_incompat);
1006                                 lma->lma_incompat |=
1007                                         lustre_to_lma_flags(la->la_flags);
1008                                 lma->lma_incompat =
1009                                         cpu_to_le32(lma->lma_incompat);
1010                                 buf.lb_buf = lma;
1011                                 buf.lb_len = sizeof(*lma);
1012                                 rc = osd_xattr_set_internal(env, obj, &buf,
1013                                                             XATTR_NAME_LMA,
1014                                                             LU_XATTR_REPLACE,
1015                                                             oh);
1016                         }
1017                         if (rc < 0) {
1018                                 CWARN("%s: failed to set LMA flags: rc = %d\n",
1019                                        osd->od_svname, rc);
1020                                 RETURN(rc);
1021                         }
1022                 }
1023         }
1024
1025         write_lock(&obj->oo_attr_lock);
1026         cnt = 0;
1027         if (valid & LA_ATIME) {
1028                 osa->atime[0] = obj->oo_attr.la_atime = la->la_atime;
1029                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(osd), NULL,
1030                                  osa->atime, 16);
1031         }
1032         if (valid & LA_MTIME) {
1033                 osa->mtime[0] = obj->oo_attr.la_mtime = la->la_mtime;
1034                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(osd), NULL,
1035                                  osa->mtime, 16);
1036         }
1037         if (valid & LA_CTIME) {
1038                 osa->ctime[0] = obj->oo_attr.la_ctime = la->la_ctime;
1039                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(osd), NULL,
1040                                  osa->ctime, 16);
1041         }
1042         if (valid & LA_MODE) {
1043                 /* mode is stored along with type, so read it first */
1044                 obj->oo_attr.la_mode = (obj->oo_attr.la_mode & S_IFMT) |
1045                         (la->la_mode & ~S_IFMT);
1046                 osa->mode = obj->oo_attr.la_mode;
1047                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(osd), NULL,
1048                                  &osa->mode, 8);
1049         }
1050         if (valid & LA_SIZE) {
1051                 osa->size = obj->oo_attr.la_size = la->la_size;
1052                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(osd), NULL,
1053                                  &osa->size, 8);
1054         }
1055         if (valid & LA_NLINK) {
1056                 osa->nlink = obj->oo_attr.la_nlink = la->la_nlink;
1057                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(osd), NULL,
1058                                  &osa->nlink, 8);
1059         }
1060         if (valid & LA_RDEV) {
1061                 osa->rdev = obj->oo_attr.la_rdev = la->la_rdev;
1062                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(osd), NULL,
1063                                  &osa->rdev, 8);
1064         }
1065         if (valid & LA_FLAGS) {
1066                 osa->flags = attrs_fs2zfs(la->la_flags);
1067                 /* many flags are not supported by zfs, so ensure a good cached
1068                  * copy */
1069                 obj->oo_attr.la_flags = attrs_zfs2fs(osa->flags);
1070                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(osd), NULL,
1071                                  &osa->flags, 8);
1072         }
1073         if (valid & LA_UID) {
1074                 osa->uid = obj->oo_attr.la_uid = la->la_uid;
1075                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(osd), NULL,
1076                                  &osa->uid, 8);
1077         }
1078         if (valid & LA_GID) {
1079                 osa->gid = obj->oo_attr.la_gid = la->la_gid;
1080                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(osd), NULL,
1081                                  &osa->gid, 8);
1082         }
1083         obj->oo_attr.la_valid |= valid;
1084         write_unlock(&obj->oo_attr_lock);
1085
1086         LASSERT(cnt <= ARRAY_SIZE(osd_oti_get(env)->oti_attr_bulk));
1087         rc = osd_object_sa_bulk_update(obj, bulk, cnt, oh);
1088
1089 out:
1090         up_read(&obj->oo_guard);
1091         RETURN(rc);
1092 }
1093
1094 /*
1095  * Object creation.
1096  *
1097  * XXX temporary solution.
1098  */
1099
1100 static void osd_ah_init(const struct lu_env *env, struct dt_allocation_hint *ah,
1101                         struct dt_object *parent, struct dt_object *child,
1102                         umode_t child_mode)
1103 {
1104         LASSERT(ah);
1105
1106         ah->dah_parent = parent;
1107         ah->dah_mode = child_mode;
1108
1109         if (parent != NULL && !dt_object_remote(parent)) {
1110                 /* will help to find FID->ino at dt_insert("..") */
1111                 struct osd_object *pobj = osd_dt_obj(parent);
1112
1113                 osd_idc_find_and_init(env, osd_obj2dev(pobj), pobj);
1114         }
1115 }
1116
1117 static int osd_declare_create(const struct lu_env *env, struct dt_object *dt,
1118                               struct lu_attr *attr,
1119                               struct dt_allocation_hint *hint,
1120                               struct dt_object_format *dof,
1121                               struct thandle *handle)
1122 {
1123         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
1124         struct osd_object       *obj = osd_dt_obj(dt);
1125         struct osd_device       *osd = osd_obj2dev(obj);
1126         struct osd_thandle      *oh;
1127         uint64_t                 zapid;
1128         dnode_t                 *dn;
1129         int                      rc, dnode_size;
1130         ENTRY;
1131
1132         LASSERT(dof);
1133
1134         switch (dof->dof_type) {
1135                 case DFT_REGULAR:
1136                 case DFT_SYM:
1137                 case DFT_NODE:
1138                         if (obj->oo_dt.do_body_ops == NULL)
1139                                 obj->oo_dt.do_body_ops = &osd_body_ops;
1140                         break;
1141                 default:
1142                         break;
1143         }
1144
1145         LASSERT(handle != NULL);
1146         oh = container_of0(handle, struct osd_thandle, ot_super);
1147         LASSERT(oh->ot_tx != NULL);
1148
1149         /* this is the minimum set of EAs on every Lustre object */
1150         obj->oo_ea_in_bonus = ZFS_SA_BASE_ATTR_SIZE +
1151                                 sizeof(__u64) + /* VBR VERSION */
1152                                 sizeof(struct lustre_mdt_attrs); /* LMA */
1153         /* reserve 32 bytes for extra stuff like ACLs */
1154         dnode_size = size_roundup_power2(obj->oo_ea_in_bonus + 32);
1155
1156         switch (dof->dof_type) {
1157                 case DFT_DIR:
1158                         dt->do_index_ops = &osd_dir_ops;
1159                 case DFT_INDEX:
1160                         /* for zap create */
1161                         dmu_tx_hold_zap(oh->ot_tx, DMU_NEW_OBJECT, FALSE, NULL);
1162                         dmu_tx_hold_sa_create(oh->ot_tx, dnode_size);
1163                         break;
1164                 case DFT_REGULAR:
1165                 case DFT_SYM:
1166                 case DFT_NODE:
1167                         /* first, we'll create new object */
1168                         dmu_tx_hold_sa_create(oh->ot_tx, dnode_size);
1169                         break;
1170
1171                 default:
1172                         LBUG();
1173                         break;
1174         }
1175
1176         /* and we'll add it to some mapping */
1177         zapid = osd_get_name_n_idx(env, osd, fid, NULL, 0, &dn);
1178         osd_tx_hold_zap(oh->ot_tx, zapid, dn, TRUE, NULL);
1179
1180         /* will help to find FID->ino mapping at dt_insert() */
1181         osd_idc_find_and_init(env, osd, obj);
1182
1183         rc = osd_declare_quota(env, osd, attr->la_uid, attr->la_gid, 1, oh,
1184                                false, NULL, false);
1185
1186         RETURN(rc);
1187 }
1188
1189 int __osd_attr_init(const struct lu_env *env, struct osd_device *osd,
1190                     sa_handle_t *sa_hdl, dmu_tx_t *tx,
1191                     struct lu_attr *la, uint64_t parent,
1192                     nvlist_t *xattr)
1193 {
1194         sa_bulk_attr_t  *bulk = osd_oti_get(env)->oti_attr_bulk;
1195         struct osa_attr *osa = &osd_oti_get(env)->oti_osa;
1196         uint64_t         gen;
1197         uint64_t         crtime[2];
1198         timestruc_t      now;
1199         int              cnt;
1200         int              rc;
1201         char *dxattr = NULL;
1202         size_t sa_size;
1203
1204
1205         LASSERT(sa_hdl);
1206
1207         gen = dmu_tx_get_txg(tx);
1208         gethrestime(&now);
1209         ZFS_TIME_ENCODE(&now, crtime);
1210
1211         osa->atime[0] = la->la_atime;
1212         osa->ctime[0] = la->la_ctime;
1213         osa->mtime[0] = la->la_mtime;
1214         osa->mode = la->la_mode;
1215         osa->uid = la->la_uid;
1216         osa->gid = la->la_gid;
1217         osa->rdev = la->la_rdev;
1218         osa->nlink = la->la_nlink;
1219         osa->flags = attrs_fs2zfs(la->la_flags);
1220         osa->size  = la->la_size;
1221
1222         /*
1223          * we need to create all SA below upon object create.
1224          *
1225          * XXX The attribute order matters since the accounting callback relies
1226          * on static offsets (i.e. SA_*_OFFSET, see zfs_space_delta_cb()) to
1227          * look up the UID/GID attributes. Moreover, the callback does not seem
1228          * to support the spill block.
1229          * We define attributes in the same order as SA_*_OFFSET in order to
1230          * work around the problem. See ORI-610.
1231          */
1232         cnt = 0;
1233         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MODE(osd), NULL, &osa->mode, 8);
1234         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_SIZE(osd), NULL, &osa->size, 8);
1235         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GEN(osd), NULL, &gen, 8);
1236         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_UID(osd), NULL, &osa->uid, 8);
1237         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_GID(osd), NULL, &osa->gid, 8);
1238         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_PARENT(osd), NULL, &parent, 8);
1239         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_FLAGS(osd), NULL, &osa->flags, 8);
1240         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_ATIME(osd), NULL, osa->atime, 16);
1241         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_MTIME(osd), NULL, osa->mtime, 16);
1242         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CTIME(osd), NULL, osa->ctime, 16);
1243         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_CRTIME(osd), NULL, crtime, 16);
1244         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_LINKS(osd), NULL, &osa->nlink, 8);
1245         SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_RDEV(osd), NULL, &osa->rdev, 8);
1246         LASSERT(cnt <= ARRAY_SIZE(osd_oti_get(env)->oti_attr_bulk));
1247
1248         if (xattr) {
1249                 rc = -nvlist_size(xattr, &sa_size, NV_ENCODE_XDR);
1250                 LASSERT(rc == 0);
1251
1252                 dxattr = osd_zio_buf_alloc(sa_size);
1253                 LASSERT(dxattr);
1254
1255                 rc = -nvlist_pack(xattr, &dxattr, &sa_size,
1256                                 NV_ENCODE_XDR, KM_SLEEP);
1257                 LASSERT(rc == 0);
1258
1259                 SA_ADD_BULK_ATTR(bulk, cnt, SA_ZPL_DXATTR(osd),
1260                                 NULL, dxattr, sa_size);
1261         }
1262
1263         rc = -sa_replace_all_by_template(sa_hdl, bulk, cnt, tx);
1264         if (dxattr)
1265                 osd_zio_buf_free(dxattr, sa_size);
1266
1267         return rc;
1268 }
1269
1270 static int osd_find_new_dnode(const struct lu_env *env, dmu_tx_t *tx,
1271                               uint64_t oid, dnode_t **dnp)
1272 {
1273         dmu_tx_hold_t *txh;
1274         int rc = 0;
1275
1276         /* take dnode_t from tx to save on dnode#->dnode_t lookup */
1277         for (txh = list_tail(&tx->tx_holds); txh;
1278              txh = list_prev(&tx->tx_holds, txh)) {
1279                 dnode_t *dn = txh->txh_dnode;
1280                 dmu_buf_impl_t *db;
1281
1282                 if (dn == NULL)
1283                         continue;
1284                 if (dn->dn_object != oid)
1285                         continue;
1286                 db = dn->dn_bonus;
1287                 if (db == NULL) {
1288                         rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
1289                         if (dn->dn_bonus == NULL)
1290                                 dbuf_create_bonus(dn);
1291                         rw_exit(&dn->dn_struct_rwlock);
1292                 }
1293                 db = dn->dn_bonus;
1294                 LASSERT(db);
1295                 LASSERT(dn->dn_handle);
1296                 DB_DNODE_ENTER(db);
1297                 if (refcount_add(&db->db_holds, osd_obj_tag) == 1) {
1298                         refcount_add(&dn->dn_holds, tag);
1299                         atomic_inc_32(&dn->dn_dbufs_count);
1300                 }
1301                 *dnp = dn;
1302                 dbuf_read(db, NULL, DB_RF_MUST_SUCCEED | DB_RF_NOPREFETCH);
1303                 break;
1304         }
1305
1306         if (unlikely(*dnp == NULL))
1307                 rc = __osd_obj2dnode(tx->tx_objset, oid, dnp);
1308
1309         return rc;
1310 }
1311
1312 /*
1313  * The transaction passed to this routine must have
1314  * dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT) called and then assigned
1315  * to a transaction group.
1316  */
1317 int __osd_object_create(const struct lu_env *env, struct osd_object *obj,
1318                         dnode_t **dnp, dmu_tx_t *tx, struct lu_attr *la)
1319 {
1320         struct osd_device   *osd = osd_obj2dev(obj);
1321         const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
1322         dmu_object_type_t    type = DMU_OT_PLAIN_FILE_CONTENTS;
1323         uint64_t oid;
1324
1325         /* Use DMU_OTN_UINT8_METADATA for local objects so their data blocks
1326          * would get an additional ditto copy */
1327         if (unlikely(S_ISREG(la->la_mode) &&
1328                      fid_seq_is_local_file(fid_seq(fid))))
1329                 type = DMU_OTN_UINT8_METADATA;
1330
1331         /* Create a new DMU object using the default dnode size. */
1332         oid = osd_dmu_object_alloc(osd->od_os, type, 0, 0, tx);
1333
1334         LASSERT(la->la_valid & LA_MODE);
1335         la->la_size = 0;
1336         la->la_nlink = 1;
1337
1338         return osd_find_new_dnode(env, tx, oid, dnp);
1339 }
1340
1341 /*
1342  * The transaction passed to this routine must have
1343  * dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, ...) called and then assigned
1344  * to a transaction group.
1345  *
1346  * Using ZAP_FLAG_HASH64 will force the ZAP to always be a FAT ZAP.
1347  * This is fine for directories today, because storing the FID in the dirent
1348  * will also require a FAT ZAP.  If there is a new type of micro ZAP created
1349  * then we might need to re-evaluate the use of this flag and instead do
1350  * a conversion from the different internal ZAP hash formats being used. */
1351 int __osd_zap_create(const struct lu_env *env, struct osd_device *osd,
1352                      dnode_t **dnp, dmu_tx_t *tx, struct lu_attr *la,
1353                      zap_flags_t flags)
1354 {
1355         uint64_t oid;
1356
1357         /* Assert that the transaction has been assigned to a
1358            transaction group. */
1359         LASSERT(tx->tx_txg != 0);
1360         *dnp = NULL;
1361
1362         oid = osd_zap_create_flags(osd->od_os, 0, flags | ZAP_FLAG_HASH64,
1363                                    DMU_OT_DIRECTORY_CONTENTS,
1364                                    14, /* == ZFS fzap_default_blockshift */
1365                                    DN_MAX_INDBLKSHIFT, /* indirect blockshift */
1366                                    0, tx);
1367
1368         la->la_size = 2;
1369         la->la_nlink = 1;
1370
1371         return osd_find_new_dnode(env, tx, oid, dnp);
1372 }
1373
1374 static dnode_t *osd_mkidx(const struct lu_env *env, struct osd_object *obj,
1375                           struct lu_attr *la, struct osd_thandle *oh)
1376 {
1377         dnode_t *dn;
1378         int rc;
1379
1380         /* Index file should be created as regular file in order not to confuse
1381          * ZPL which could interpret them as directory.
1382          * We set ZAP_FLAG_UINT64_KEY to let ZFS know than we are going to use
1383          * binary keys */
1384         LASSERT(S_ISREG(la->la_mode));
1385         rc = __osd_zap_create(env, osd_obj2dev(obj), &dn, oh->ot_tx, la,
1386                               ZAP_FLAG_UINT64_KEY);
1387         if (rc)
1388                 return ERR_PTR(rc);
1389         return dn;
1390 }
1391
1392 static dnode_t *osd_mkdir(const struct lu_env *env, struct osd_object *obj,
1393                           struct lu_attr *la, struct osd_thandle *oh)
1394 {
1395         dnode_t *dn;
1396         int rc;
1397
1398         LASSERT(S_ISDIR(la->la_mode));
1399         rc = __osd_zap_create(env, osd_obj2dev(obj), &dn, oh->ot_tx, la, 0);
1400         if (rc)
1401                 return ERR_PTR(rc);
1402         return dn;
1403 }
1404
1405 static dnode_t *osd_mkreg(const struct lu_env *env, struct osd_object *obj,
1406                           struct lu_attr *la, struct osd_thandle *oh)
1407 {
1408         const struct lu_fid *fid = lu_object_fid(&obj->oo_dt.do_lu);
1409         struct osd_device *osd = osd_obj2dev(obj);
1410         dnode_t *dn;
1411         int rc;
1412
1413         LASSERT(S_ISREG(la->la_mode));
1414         rc = __osd_object_create(env, obj, &dn, oh->ot_tx, la);
1415         if (rc)
1416                 return ERR_PTR(rc);
1417
1418         if ((fid_is_idif(fid) || fid_is_norm(fid) || fid_is_echo(fid)) &&
1419             osd->od_is_ost) {
1420                 /* The minimum block size must be at least page size otherwise
1421                  * it will break the assumption in tgt_thread_big_cache where
1422                  * the array size is PTLRPC_MAX_BRW_PAGES. It will also affect
1423                  * RDMA due to subpage transfer size */
1424                 rc = -dmu_object_set_blocksize(osd->od_os, dn->dn_object,
1425                                                PAGE_SIZE, 0, oh->ot_tx);
1426                 if (unlikely(rc)) {
1427                         CERROR("%s: can't change blocksize: %d\n",
1428                                osd->od_svname, rc);
1429                         return ERR_PTR(rc);
1430                 }
1431         }
1432
1433         return dn;
1434 }
1435
1436 static dnode_t *osd_mksym(const struct lu_env *env, struct osd_object *obj,
1437                           struct lu_attr *la, struct osd_thandle *oh)
1438 {
1439         dnode_t *dn;
1440         int rc;
1441
1442         LASSERT(S_ISLNK(la->la_mode));
1443         rc = __osd_object_create(env, obj, &dn, oh->ot_tx, la);
1444         if (rc)
1445                 return ERR_PTR(rc);
1446         return dn;
1447 }
1448
1449 static dnode_t *osd_mknod(const struct lu_env *env, struct osd_object *obj,
1450                           struct lu_attr *la, struct osd_thandle *oh)
1451 {
1452         dnode_t *dn;
1453         int rc;
1454
1455         if (S_ISCHR(la->la_mode) || S_ISBLK(la->la_mode))
1456                 la->la_valid |= LA_RDEV;
1457
1458         rc = __osd_object_create(env, obj, &dn, oh->ot_tx, la);
1459         if (rc)
1460                 return ERR_PTR(rc);
1461         return dn;
1462 }
1463
1464 typedef dnode_t *(*osd_obj_type_f)(const struct lu_env *env,
1465                                    struct osd_object *obj,
1466                                    struct lu_attr *la,
1467                                    struct osd_thandle *oh);
1468
1469 static osd_obj_type_f osd_create_type_f(enum dt_format_type type)
1470 {
1471         osd_obj_type_f result;
1472
1473         switch (type) {
1474         case DFT_DIR:
1475                 result = osd_mkdir;
1476                 break;
1477         case DFT_INDEX:
1478                 result = osd_mkidx;
1479                 break;
1480         case DFT_REGULAR:
1481                 result = osd_mkreg;
1482                 break;
1483         case DFT_SYM:
1484                 result = osd_mksym;
1485                 break;
1486         case DFT_NODE:
1487                 result = osd_mknod;
1488                 break;
1489         default:
1490                 LBUG();
1491                 break;
1492         }
1493         return result;
1494 }
1495
1496 /*
1497  * Concurrency: @dt is write locked.
1498  */
1499 static int osd_create(const struct lu_env *env, struct dt_object *dt,
1500                       struct lu_attr *attr, struct dt_allocation_hint *hint,
1501                       struct dt_object_format *dof, struct thandle *th)
1502 {
1503         struct osd_thread_info  *info = osd_oti_get(env);
1504         struct lustre_mdt_attrs *lma = &info->oti_mdt_attrs;
1505         struct zpl_direntry     *zde = &info->oti_zde.lzd_reg;
1506         const struct lu_fid     *fid = lu_object_fid(&dt->do_lu);
1507         struct osd_object       *obj = osd_dt_obj(dt);
1508         struct osd_device       *osd = osd_obj2dev(obj);
1509         char                    *buf = info->oti_str;
1510         struct osd_thandle      *oh;
1511         dnode_t *dn = NULL, *zdn = NULL;
1512         uint64_t                 zapid, parent = 0;
1513         int                      rc;
1514
1515         ENTRY;
1516
1517         LASSERT(!fid_is_acct(fid));
1518
1519         /* concurrent create declarations should not see
1520          * the object inconsistent (db, attr, etc).
1521          * in regular cases acquisition should be cheap */
1522         down_write(&obj->oo_guard);
1523
1524         if (unlikely(dt_object_exists(dt)))
1525                 GOTO(out, rc = -EEXIST);
1526
1527         LASSERT(osd_invariant(obj));
1528         LASSERT(dof != NULL);
1529
1530         LASSERT(th != NULL);
1531         oh = container_of0(th, struct osd_thandle, ot_super);
1532
1533         LASSERT(obj->oo_dn == NULL);
1534
1535         /* to follow ZFS on-disk format we need
1536          * to initialize parent dnode properly */
1537         if (hint != NULL && hint->dah_parent != NULL &&
1538             !dt_object_remote(hint->dah_parent))
1539                 parent = osd_dt_obj(hint->dah_parent)->oo_dn->dn_object;
1540
1541         /* we may fix some attributes, better do not change the source */
1542         obj->oo_attr = *attr;
1543         obj->oo_attr.la_valid |= LA_SIZE | LA_NLINK | LA_TYPE;
1544
1545         dn = osd_create_type_f(dof->dof_type)(env, obj, &obj->oo_attr, oh);
1546         if (IS_ERR(dn)) {
1547                 rc = PTR_ERR(dn);
1548                 dn = NULL;
1549                 GOTO(out, rc);
1550         }
1551
1552         zde->zde_pad = 0;
1553         zde->zde_dnode = dn->dn_object;
1554         zde->zde_type = IFTODT(attr->la_mode & S_IFMT);
1555
1556         zapid = osd_get_name_n_idx(env, osd, fid, buf,
1557                                    sizeof(info->oti_str), &zdn);
1558         rc = osd_zap_add(osd, zapid, zdn, buf, 8, 1, zde, oh->ot_tx);
1559         if (rc)
1560                 GOTO(out, rc);
1561         obj->oo_dn = dn;
1562         /* Now add in all of the "SA" attributes */
1563         rc = osd_sa_handle_get(obj);
1564         if (rc)
1565                 GOTO(out, rc);
1566
1567         rc = -nvlist_alloc(&obj->oo_sa_xattr, NV_UNIQUE_NAME, KM_SLEEP);
1568         if (rc)
1569                 GOTO(out, rc);
1570
1571         /* initialize LMA */
1572         lustre_lma_init(lma, fid, 0, 0);
1573         lustre_lma_swab(lma);
1574         rc = -nvlist_add_byte_array(obj->oo_sa_xattr, XATTR_NAME_LMA,
1575                                     (uchar_t *)lma, sizeof(*lma));
1576         if (rc)
1577                 GOTO(out, rc);
1578
1579         /* configure new osd object */
1580         obj->oo_parent = parent != 0 ? parent : zapid;
1581         obj->oo_late_attr_set = 1;
1582         rc = __osd_sa_xattr_schedule_update(env, obj, oh);
1583         if (rc)
1584                 GOTO(out, rc);
1585
1586         /* XXX: oo_lma_flags */
1587         obj->oo_dt.do_lu.lo_header->loh_attr |= obj->oo_attr.la_mode & S_IFMT;
1588         if (likely(!fid_is_acct(lu_object_fid(&obj->oo_dt.do_lu))))
1589                 /* no body operations for accounting objects */
1590                 obj->oo_dt.do_body_ops = &osd_body_ops;
1591
1592         osd_idc_find_and_init(env, osd, obj);
1593
1594 out:
1595         if (unlikely(rc && dn)) {
1596                 dmu_object_free(osd->od_os, dn->dn_object, oh->ot_tx);
1597                 osd_dnode_rele(dn);
1598                 obj->oo_dn = NULL;
1599         } else if (!rc) {
1600                 obj->oo_dt.do_lu.lo_header->loh_attr |= LOHA_EXISTS;
1601         }
1602         up_write(&obj->oo_guard);
1603         RETURN(rc);
1604 }
1605
1606 static int osd_declare_ref_add(const struct lu_env *env, struct dt_object *dt,
1607                                struct thandle *th)
1608 {
1609         return osd_declare_attr_set(env, dt, NULL, th);
1610 }
1611
1612 /*
1613  * Concurrency: @dt is write locked.
1614  */
1615 static int osd_ref_add(const struct lu_env *env, struct dt_object *dt,
1616                        struct thandle *handle)
1617 {
1618         struct osd_object       *obj = osd_dt_obj(dt);
1619         struct osd_thandle      *oh;
1620         struct osd_device       *osd = osd_obj2dev(obj);
1621         uint64_t                 nlink;
1622         int rc;
1623
1624         ENTRY;
1625
1626         down_read(&obj->oo_guard);
1627         if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
1628                 GOTO(out, rc = -ENOENT);
1629
1630         LASSERT(osd_invariant(obj));
1631         LASSERT(obj->oo_sa_hdl != NULL);
1632
1633         oh = container_of0(handle, struct osd_thandle, ot_super);
1634
1635         write_lock(&obj->oo_attr_lock);
1636         nlink = ++obj->oo_attr.la_nlink;
1637         write_unlock(&obj->oo_attr_lock);
1638
1639         rc = osd_object_sa_update(obj, SA_ZPL_LINKS(osd), &nlink, 8, oh);
1640
1641 out:
1642         up_read(&obj->oo_guard);
1643         RETURN(rc);
1644 }
1645
1646 static int osd_declare_ref_del(const struct lu_env *env, struct dt_object *dt,
1647                                struct thandle *handle)
1648 {
1649         return osd_declare_attr_set(env, dt, NULL, handle);
1650 }
1651
1652 /*
1653  * Concurrency: @dt is write locked.
1654  */
1655 static int osd_ref_del(const struct lu_env *env, struct dt_object *dt,
1656                        struct thandle *handle)
1657 {
1658         struct osd_object       *obj = osd_dt_obj(dt);
1659         struct osd_thandle      *oh;
1660         struct osd_device       *osd = osd_obj2dev(obj);
1661         uint64_t                 nlink;
1662         int                      rc;
1663
1664         ENTRY;
1665
1666         down_read(&obj->oo_guard);
1667
1668         if (unlikely(!dt_object_exists(dt) || obj->oo_destroyed))
1669                 GOTO(out, rc = -ENOENT);
1670
1671         LASSERT(osd_invariant(obj));
1672         LASSERT(obj->oo_sa_hdl != NULL);
1673
1674         oh = container_of0(handle, struct osd_thandle, ot_super);
1675         LASSERT(!lu_object_is_dying(dt->do_lu.lo_header));
1676
1677         write_lock(&obj->oo_attr_lock);
1678         nlink = --obj->oo_attr.la_nlink;
1679         write_unlock(&obj->oo_attr_lock);
1680
1681         rc = osd_object_sa_update(obj, SA_ZPL_LINKS(osd), &nlink, 8, oh);
1682
1683 out:
1684         up_read(&obj->oo_guard);
1685         RETURN(rc);
1686 }
1687
1688 static int osd_object_sync(const struct lu_env *env, struct dt_object *dt,
1689                            __u64 start, __u64 end)
1690 {
1691         struct osd_device *osd = osd_obj2dev(osd_dt_obj(dt));
1692         ENTRY;
1693
1694         /* XXX: no other option than syncing the whole filesystem until we
1695          * support ZIL.  If the object tracked the txg that it was last
1696          * modified in, it could pass that txg here instead of "0".  Maybe
1697          * the changes are already committed, so no wait is needed at all? */
1698         if (!osd->od_dt_dev.dd_rdonly)
1699                 txg_wait_synced(dmu_objset_pool(osd->od_os), 0ULL);
1700
1701         RETURN(0);
1702 }
1703
1704 static int osd_invalidate(const struct lu_env *env, struct dt_object *dt)
1705 {
1706         return 0;
1707 }
1708
1709 static struct dt_object_operations osd_obj_ops = {
1710         .do_read_lock           = osd_read_lock,
1711         .do_write_lock          = osd_write_lock,
1712         .do_read_unlock         = osd_read_unlock,
1713         .do_write_unlock        = osd_write_unlock,
1714         .do_write_locked        = osd_write_locked,
1715         .do_attr_get            = osd_attr_get,
1716         .do_declare_attr_set    = osd_declare_attr_set,
1717         .do_attr_set            = osd_attr_set,
1718         .do_ah_init             = osd_ah_init,
1719         .do_declare_create      = osd_declare_create,
1720         .do_create              = osd_create,
1721         .do_declare_destroy     = osd_declare_destroy,
1722         .do_destroy             = osd_destroy,
1723         .do_index_try           = osd_index_try,
1724         .do_declare_ref_add     = osd_declare_ref_add,
1725         .do_ref_add             = osd_ref_add,
1726         .do_declare_ref_del     = osd_declare_ref_del,
1727         .do_ref_del             = osd_ref_del,
1728         .do_xattr_get           = osd_xattr_get,
1729         .do_declare_xattr_set   = osd_declare_xattr_set,
1730         .do_xattr_set           = osd_xattr_set,
1731         .do_declare_xattr_del   = osd_declare_xattr_del,
1732         .do_xattr_del           = osd_xattr_del,
1733         .do_xattr_list          = osd_xattr_list,
1734         .do_object_sync         = osd_object_sync,
1735         .do_invalidate          = osd_invalidate,
1736 };
1737
1738 static struct lu_object_operations osd_lu_obj_ops = {
1739         .loo_object_init        = osd_object_init,
1740         .loo_object_delete      = osd_object_delete,
1741         .loo_object_release     = osd_object_release,
1742         .loo_object_free        = osd_object_free,
1743         .loo_object_print       = osd_object_print,
1744         .loo_object_invariant   = osd_object_invariant,
1745 };
1746
1747 static int osd_otable_it_attr_get(const struct lu_env *env,
1748                                 struct dt_object *dt,
1749                                 struct lu_attr *attr)
1750 {
1751         attr->la_valid = 0;
1752         return 0;
1753 }
1754
1755 static struct dt_object_operations osd_obj_otable_it_ops = {
1756         .do_attr_get            = osd_otable_it_attr_get,
1757         .do_index_try           = osd_index_try,
1758 };