lustre/ofd/ofd_obd.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.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2012, 2013, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/ofd/ofd_obd.c
  37  *
  38  * Author: Andreas Dilger <adilger@whamcloud.com>
  39  * Author: Alex Zhuravlev <bzzz@whamcloud.com>
  40  * Author: Mike Pershin <tappro@whamcloud.com>
  41  */
  42
  43 #define DEBUG_SUBSYSTEM S_FILTER
  44
  45 #include <lustre/lustre_idl.h>
  46 #include "ofd_internal.h"
  47 #include <obd_cksum.h>
  48 #include <lustre_ioctl.h>
  49 #include <lustre_quota.h>
  50 #include <lustre_lfsck.h>
  51
  52 static int ofd_export_stats_init(struct ofd_device *ofd,
  53                                  struct obd_export *exp, void *client_nid)
  54 {
  55         struct obd_device       *obd = ofd_obd(ofd);
  56         struct nid_stat         *stats;
  57         int                      num_stats;
  58         int                      rc, newnid = 0;
  59
  60         ENTRY;
  61
  62         LASSERT(obd->obd_uses_nid_stats);
  63
  64         if (obd_uuid_equals(&exp->exp_client_uuid, &obd->obd_uuid))
  65                 /* Self-export gets no proc entry */
  66                 RETURN(0);
  67
  68         rc = lprocfs_exp_setup(exp, client_nid, &newnid);
  69         if (rc) {
  70                 /* Mask error for already created
  71                  * /proc entries */
  72                 if (rc == -EALREADY)
  73                         rc = 0;
  74                 RETURN(rc);
  75         }
  76
  77         if (newnid == 0)
  78                 RETURN(0);
  79
  80         stats = exp->exp_nid_stats;
  81         LASSERT(stats != NULL);
  82
  83         num_stats = NUM_OBD_STATS + LPROC_OFD_STATS_LAST;
  84
  85         stats->nid_stats = lprocfs_alloc_stats(num_stats,
  86                                                LPROCFS_STATS_FLAG_NOPERCPU);
  87         if (stats->nid_stats == NULL)
  88                 return -ENOMEM;
  89
  90         lprocfs_init_ops_stats(LPROC_OFD_STATS_LAST, stats->nid_stats);
  91         ofd_stats_counter_init(stats->nid_stats);
  92         rc = lprocfs_register_stats(stats->nid_proc, "stats",
  93                                     stats->nid_stats);
  94         if (rc)
  95                 GOTO(clean, rc);
  96
  97         rc = lprocfs_nid_ldlm_stats_init(stats);
  98         if (rc) {
  99                 lprocfs_free_stats(&stats->nid_stats);
 100                 GOTO(clean, rc);
 101         }
 102
 103         RETURN(0);
 104 clean:
 105         return rc;
 106 }
 107
 108 static int ofd_parse_connect_data(const struct lu_env *env,
 109                                   struct obd_export *exp,
 110                                   struct obd_connect_data *data,
 111                                   bool new_connection)
 112 {
 113         struct ofd_device                *ofd = ofd_exp(exp);
 114         struct filter_export_data        *fed = &exp->exp_filter_data;
 115
 116         if (!data)
 117                 RETURN(0);
 118
 119         CDEBUG(D_RPCTRACE, "%s: cli %s/%p ocd_connect_flags: "LPX64
 120                " ocd_version: %x ocd_grant: %d ocd_index: %u"
 121                " ocd_group %u\n",
 122                exp->exp_obd->obd_name, exp->exp_client_uuid.uuid, exp,
 123                data->ocd_connect_flags, data->ocd_version,
 124                data->ocd_grant, data->ocd_index, data->ocd_group);
 125
 126         if (fed->fed_group != 0 && fed->fed_group != data->ocd_group) {
 127                 CWARN("!!! This export (nid %s) used object group %d "
 128                       "earlier; now it's trying to use group %d!  This could "
 129                       "be a bug in the MDS. Please report to "
 130                       "http://bugs.whamcloud.com/\n",
 131                       obd_export_nid2str(exp), fed->fed_group,
 132                       data->ocd_group);
 133                 RETURN(-EPROTO);
 134         }
 135         fed->fed_group = data->ocd_group;
 136
 137         data->ocd_connect_flags &= OST_CONNECT_SUPPORTED;
 138         data->ocd_version = LUSTRE_VERSION_CODE;
 139
 140         /* Kindly make sure the SKIP_ORPHAN flag is from MDS. */
 141         if (data->ocd_connect_flags & OBD_CONNECT_MDS)
 142                 CDEBUG(D_HA, "%s: Received MDS connection for group %u\n",
 143                        exp->exp_obd->obd_name, data->ocd_group);
 144         else if (data->ocd_connect_flags & OBD_CONNECT_SKIP_ORPHAN)
 145                 RETURN(-EPROTO);
 146
 147         if (ofd_grant_param_supp(exp)) {
 148                 exp->exp_filter_data.fed_pagesize = data->ocd_blocksize;
 149                 /* ocd_{blocksize,inodespace} are log2 values */
 150                 data->ocd_blocksize  = ofd->ofd_blockbits;
 151                 data->ocd_inodespace = ofd->ofd_dt_conf.ddp_inodespace;
 152                 /* ocd_grant_extent is in 1K blocks */
 153                 data->ocd_grant_extent = ofd->ofd_dt_conf.ddp_grant_frag >> 10;
 154         }
 155
 156         if (data->ocd_connect_flags & OBD_CONNECT_GRANT)
 157                 data->ocd_grant = ofd_grant_connect(env, exp, data->ocd_grant,
 158                                                     new_connection);
 159
 160         if (data->ocd_connect_flags & OBD_CONNECT_INDEX) {
 161                 struct lr_server_data *lsd = &ofd->ofd_lut.lut_lsd;
 162                 int                    index = lsd->lsd_osd_index;
 163
 164                 if (index != data->ocd_index) {
 165                         LCONSOLE_ERROR_MSG(0x136, "Connection from %s to index"
 166                                            " %u doesn't match actual OST index"
 167                                            " %u in last_rcvd file, bad "
 168                                            "configuration?\n",
 169                                            obd_export_nid2str(exp), index,
 170                                            data->ocd_index);
 171                         RETURN(-EBADF);
 172                 }
 173                 if (!(lsd->lsd_feature_compat & OBD_COMPAT_OST)) {
 174                         /* this will only happen on the first connect */
 175                         lsd->lsd_feature_compat |= OBD_COMPAT_OST;
 176                         /* sync is not needed here as lut_client_add will
 177                          * set exp_need_sync flag */
 178                         tgt_server_data_update(env, &ofd->ofd_lut, 0);
 179                 }
 180         }
 181         if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_SIZE)) {
 182                 data->ocd_brw_size = 65536;
 183         } else if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) {
 184                 data->ocd_brw_size = min(data->ocd_brw_size,
 185                                          (__u32)DT_MAX_BRW_SIZE);
 186                 if (data->ocd_brw_size == 0) {
 187                         CERROR("%s: cli %s/%p ocd_connect_flags: "LPX64
 188                                " ocd_version: %x ocd_grant: %d ocd_index: %u "
 189                                "ocd_brw_size is unexpectedly zero, "
 190                                "network data corruption?"
 191                                "Refusing connection of this client\n",
 192                                exp->exp_obd->obd_name,
 193                                exp->exp_client_uuid.uuid,
 194                                exp, data->ocd_connect_flags, data->ocd_version,
 195                                data->ocd_grant, data->ocd_index);
 196                         RETURN(-EPROTO);
 197                 }
 198         }
 199
 200         if (data->ocd_connect_flags & OBD_CONNECT_CKSUM) {
 201                 __u32 cksum_types = data->ocd_cksum_types;
 202
 203                 /* The client set in ocd_cksum_types the checksum types it
 204                  * supports. We have to mask off the algorithms that we don't
 205                  * support */
 206                 data->ocd_cksum_types &= cksum_types_supported_server();
 207
 208                 if (unlikely(data->ocd_cksum_types == 0)) {
 209                         CERROR("%s: Connect with checksum support but no "
 210                                "ocd_cksum_types is set\n",
 211                                exp->exp_obd->obd_name);
 212                         RETURN(-EPROTO);
 213                 }
 214
 215                 CDEBUG(D_RPCTRACE, "%s: cli %s supports cksum type %x, return "
 216                        "%x\n", exp->exp_obd->obd_name, obd_export_nid2str(exp),
 217                        cksum_types, data->ocd_cksum_types);
 218         } else {
 219                 /* This client does not support OBD_CONNECT_CKSUM
 220                  * fall back to CRC32 */
 221                 CDEBUG(D_RPCTRACE, "%s: cli %s does not support "
 222                        "OBD_CONNECT_CKSUM, CRC32 will be used\n",
 223                        exp->exp_obd->obd_name, obd_export_nid2str(exp));
 224         }
 225
 226         if (data->ocd_connect_flags & OBD_CONNECT_MAXBYTES)
 227                 data->ocd_maxbytes = ofd->ofd_dt_conf.ddp_maxbytes;
 228
 229         if (OCD_HAS_FLAG(data, PINGLESS)) {
 230                 if (ptlrpc_pinger_suppress_pings()) {
 231                         spin_lock(&exp->exp_obd->obd_dev_lock);
 232                         list_del_init(&exp->exp_obd_chain_timed);
 233                         spin_unlock(&exp->exp_obd->obd_dev_lock);
 234                 } else {
 235                         data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
 236                 }
 237         }
 238
 239         RETURN(0);
 240 }
 241
 242 static int ofd_obd_reconnect(const struct lu_env *env, struct obd_export *exp,
 243                              struct obd_device *obd, struct obd_uuid *cluuid,
 244                              struct obd_connect_data *data, void *localdata)
 245 {
 246         struct ofd_device       *ofd;
 247         int                      rc;
 248
 249         ENTRY;
 250
 251         if (exp == NULL || obd == NULL || cluuid == NULL)
 252                 RETURN(-EINVAL);
 253
 254         ofd = ofd_dev(obd->obd_lu_dev);
 255
 256         rc = ofd_parse_connect_data(env, exp, data, false);
 257         if (rc == 0)
 258                 ofd_export_stats_init(ofd, exp, localdata);
 259
 260         RETURN(rc);
 261 }
 262
 263 static int ofd_obd_connect(const struct lu_env *env, struct obd_export **_exp,
 264                            struct obd_device *obd, struct obd_uuid *cluuid,
 265                            struct obd_connect_data *data, void *localdata)
 266 {
 267         struct obd_export       *exp;
 268         struct ofd_device       *ofd;
 269         struct lustre_handle     conn = { 0 };
 270         int                      rc;
 271         ENTRY;
 272
 273         if (_exp == NULL || obd == NULL || cluuid == NULL)
 274                 RETURN(-EINVAL);
 275
 276         ofd = ofd_dev(obd->obd_lu_dev);
 277
 278         rc = class_connect(&conn, obd, cluuid);
 279         if (rc)
 280                 RETURN(rc);
 281
 282         exp = class_conn2export(&conn);
 283         LASSERT(exp != NULL);
 284
 285         rc = ofd_parse_connect_data(env, exp, data, true);
 286         if (rc)
 287                 GOTO(out, rc);
 288
 289         if (obd->obd_replayable) {
 290                 struct tg_export_data *ted = &exp->exp_target_data;
 291
 292                 memcpy(ted->ted_lcd->lcd_uuid, cluuid,
 293                        sizeof(ted->ted_lcd->lcd_uuid));
 294                 rc = tgt_client_new(env, exp);
 295                 if (rc != 0)
 296                         GOTO(out, rc);
 297                 ofd_export_stats_init(ofd, exp, localdata);
 298         }
 299
 300         CDEBUG(D_HA, "%s: get connection from MDS %d\n", obd->obd_name,
 301                data ? data->ocd_group : -1);
 302
 303 out:
 304         if (rc != 0) {
 305                 class_disconnect(exp);
 306                 *_exp = NULL;
 307         } else {
 308                 *_exp = exp;
 309         }
 310         RETURN(rc);
 311 }
 312
 313 int ofd_obd_disconnect(struct obd_export *exp)
 314 {
 315         struct ofd_device       *ofd = ofd_dev(exp->exp_obd->obd_lu_dev);
 316         struct lu_env            env;
 317         int                      rc;
 318
 319         ENTRY;
 320
 321         LASSERT(exp);
 322         class_export_get(exp);
 323
 324         if (!(exp->exp_flags & OBD_OPT_FORCE))
 325                 ofd_grant_sanity_check(ofd_obd(ofd), __FUNCTION__);
 326
 327         rc = server_disconnect_export(exp);
 328
 329         ofd_grant_discard(exp);
 330
 331         /* Do not erase record for recoverable client. */
 332         if (exp->exp_obd->obd_replayable &&
 333             (!exp->exp_obd->obd_fail || exp->exp_failed)) {
 334                 rc = lu_env_init(&env, LCT_DT_THREAD);
 335                 if (rc)
 336                         GOTO(out, rc);
 337
 338                 tgt_client_del(&env, exp);
 339                 lu_env_fini(&env);
 340         }
 341 out:
 342         class_export_put(exp);
 343         RETURN(rc);
 344 }
 345
 346 static int ofd_init_export(struct obd_export *exp)
 347 {
 348         int rc;
 349
 350         spin_lock_init(&exp->exp_filter_data.fed_lock);
 351         CFS_INIT_LIST_HEAD(&exp->exp_filter_data.fed_mod_list);
 352         atomic_set(&exp->exp_filter_data.fed_soft_sync_count, 0);
 353         spin_lock(&exp->exp_lock);
 354         exp->exp_connecting = 1;
 355         spin_unlock(&exp->exp_lock);
 356
 357         /* self-export doesn't need client data and ldlm initialization */
 358         if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
 359                                      &exp->exp_client_uuid)))
 360                 return 0;
 361
 362         rc = tgt_client_alloc(exp);
 363         if (rc == 0)
 364                 ldlm_init_export(exp);
 365         if (rc)
 366                 CERROR("%s: Can't initialize export: rc %d\n",
 367                        exp->exp_obd->obd_name, rc);
 368         return rc;
 369 }
 370
 371 static int ofd_destroy_export(struct obd_export *exp)
 372 {
 373         struct ofd_device *ofd = ofd_dev(exp->exp_obd->obd_lu_dev);
 374
 375         if (exp->exp_filter_data.fed_pending)
 376                 CERROR("%s: cli %s/%p has %lu pending on destroyed export"
 377                        "\n", exp->exp_obd->obd_name, exp->exp_client_uuid.uuid,
 378                        exp, exp->exp_filter_data.fed_pending);
 379
 380         target_destroy_export(exp);
 381
 382         if (unlikely(obd_uuid_equals(&exp->exp_obd->obd_uuid,
 383                                      &exp->exp_client_uuid)))
 384                 return 0;
 385
 386         ldlm_destroy_export(exp);
 387         tgt_client_free(exp);
 388
 389         ofd_fmd_cleanup(exp);
 390
 391         /*
 392          * discard grants once we're sure no more
 393          * interaction with the client is possible
 394          */
 395         ofd_grant_discard(exp);
 396         ofd_fmd_cleanup(exp);
 397
 398         if (exp_connect_flags(exp) & OBD_CONNECT_GRANT_SHRINK) {
 399                 if (ofd->ofd_tot_granted_clients > 0)
 400                         ofd->ofd_tot_granted_clients --;
 401         }
 402
 403         if (!(exp->exp_flags & OBD_OPT_FORCE))
 404                 ofd_grant_sanity_check(exp->exp_obd, __FUNCTION__);
 405
 406         LASSERT(cfs_list_empty(&exp->exp_filter_data.fed_mod_list));
 407         return 0;
 408 }
 409
 410 int ofd_postrecov(const struct lu_env *env, struct ofd_device *ofd)
 411 {
 412         struct lu_device *ldev = &ofd->ofd_dt_dev.dd_lu_dev;
 413
 414         CDEBUG(D_HA, "%s: recovery is over\n", ofd_obd(ofd)->obd_name);
 415         return ldev->ld_ops->ldo_recovery_complete(env, ldev);
 416 }
 417
 418 int ofd_obd_postrecov(struct obd_device *obd)
 419 {
 420         struct lu_env            env;
 421         struct lu_device        *ldev = obd->obd_lu_dev;
 422         int                      rc;
 423
 424         ENTRY;
 425
 426         rc = lu_env_init(&env, LCT_DT_THREAD);
 427         if (rc)
 428                 RETURN(rc);
 429         ofd_info_init(&env, obd->obd_self_export);
 430
 431         rc = ofd_postrecov(&env, ofd_dev(ldev));
 432
 433         lu_env_fini(&env);
 434         RETURN(rc);
 435 }
 436
 437 /* This is not called from request handler, check ofd_set_info_hdl() instead
 438  * this OBD functions is only used by class_notify_sptlrpc_conf() locally
 439  * by direct obd_set_info_async() call */
 440 static int ofd_set_info_async(const struct lu_env *env, struct obd_export *exp,
 441                               __u32 keylen, void *key, __u32 vallen, void *val,
 442                               struct ptlrpc_request_set *set)
 443 {
 444         int rc = 0;
 445
 446         ENTRY;
 447
 448         if (exp->exp_obd == NULL) {
 449                 CDEBUG(D_IOCTL, "invalid export %p\n", exp);
 450                 RETURN(-EINVAL);
 451         }
 452
 453         if (KEY_IS(KEY_SPTLRPC_CONF)) {
 454                 rc = tgt_adapt_sptlrpc_conf(class_exp2tgt(exp), 0);
 455         } else {
 456                 CERROR("%s: Unsupported key %s\n",
 457                        exp->exp_obd->obd_name, (char*)key);
 458                 rc = -EOPNOTSUPP;
 459         }
 460         RETURN(rc);
 461 }
 462
 463 /* used by nrs_orr_range_fill_physical() in ptlrpc, see LU-3239 */
 464 static int ofd_get_info(const struct lu_env *env, struct obd_export *exp,
 465                         __u32 keylen, void *key, __u32 *vallen, void *val,
 466                         struct lov_stripe_md *lsm)
 467 {
 468         struct ofd_thread_info          *info;
 469         struct ofd_device               *ofd;
 470         struct ll_fiemap_info_key       *fm_key = key;
 471         struct ll_user_fiemap           *fiemap = val;
 472         int                              rc = 0;
 473
 474         ENTRY;
 475
 476         if (exp->exp_obd == NULL) {
 477                 CDEBUG(D_IOCTL, "invalid client export %p\n", exp);
 478                 RETURN(-EINVAL);
 479         }
 480
 481         ofd = ofd_exp(exp);
 482
 483         if (KEY_IS(KEY_FIEMAP)) {
 484                 info = ofd_info_init(env, exp);
 485
 486                 rc = ostid_to_fid(&info->fti_fid, &fm_key->oa.o_oi,
 487                                   ofd->ofd_lut.lut_lsd.lsd_osd_index);
 488                 if (rc != 0)
 489                         RETURN(rc);
 490
 491                 rc = ofd_fiemap_get(env, ofd, &info->fti_fid, fiemap);
 492         } else {
 493                 CERROR("%s: not supported key %s\n", ofd_name(ofd), (char*)key);
 494                 rc = -EOPNOTSUPP;
 495         }
 496
 497         RETURN(rc);
 498 }
 499
 500 /** helper function for statfs, also used by grant code */
 501 int ofd_statfs_internal(const struct lu_env *env, struct ofd_device *ofd,
 502                         struct obd_statfs *osfs, __u64 max_age, int *from_cache)
 503 {
 504         int rc = 0;
 505         ENTRY;
 506
 507         down_read(&ofd->ofd_lastid_rwsem);
 508         /* Currently, for safe, we do not distinguish which LAST_ID is broken,
 509          * we may do that in the future.
 510          * Return -ENOSPC until the LAST_ID rebuilt. */
 511         if (unlikely(ofd->ofd_lastid_rebuilding))
 512                 GOTO(out, rc = -ENOSPC);
 513
 514         spin_lock(&ofd->ofd_osfs_lock);
 515         if (cfs_time_before_64(ofd->ofd_osfs_age, max_age) || max_age == 0) {
 516                 obd_size unstable;
 517
 518                 /* statfs data are too old, get up-to-date one.
 519                  * we must be cautious here since multiple threads might be
 520                  * willing to update statfs data concurrently and we must
 521                  * grant that cached statfs data are always consistent */
 522
 523                 if (ofd->ofd_statfs_inflight == 0)
 524                         /* clear inflight counter if no users, although it would
 525                          * take a while to overflow this 64-bit counter ... */
 526                         ofd->ofd_osfs_inflight = 0;
 527                 /* notify ofd_grant_commit() that we want to track writes
 528                  * completed as of now */
 529                 ofd->ofd_statfs_inflight++;
 530                 /* record value of inflight counter before running statfs to
 531                  * compute the diff once statfs is completed */
 532                 unstable = ofd->ofd_osfs_inflight;
 533                 spin_unlock(&ofd->ofd_osfs_lock);
 534
 535                 /* statfs can sleep ... hopefully not for too long since we can
 536                  * call it fairly often as space fills up */
 537                 rc = dt_statfs(env, ofd->ofd_osd, osfs);
 538                 if (unlikely(rc))
 539                         GOTO(out, rc);
 540
 541                 spin_lock(&ofd->ofd_grant_lock);
 542                 spin_lock(&ofd->ofd_osfs_lock);
 543                 /* calculate how much space was written while we released the
 544                  * ofd_osfs_lock */
 545                 unstable = ofd->ofd_osfs_inflight - unstable;
 546                 ofd->ofd_osfs_unstable = 0;
 547                 if (unstable) {
 548                         /* some writes completed while we were running statfs
 549                          * w/o the ofd_osfs_lock. Those ones got added to
 550                          * the cached statfs data that we are about to crunch.
 551                          * Take them into account in the new statfs data */
 552                         osfs->os_bavail -= min_t(obd_size, osfs->os_bavail,
 553                                                unstable >> ofd->ofd_blockbits);
 554                         /* However, we don't really know if those writes got
 555                          * accounted in the statfs call, so tell
 556                          * ofd_grant_space_left() there is some uncertainty
 557                          * on the accounting of those writes.
 558                          * The purpose is to prevent spurious error messages in
 559                          * ofd_grant_space_left() since those writes might be
 560                          * accounted twice. */
 561                         ofd->ofd_osfs_unstable += unstable;
 562                 }
 563                 /* similarly, there is some uncertainty on write requests
 564                  * between prepare & commit */
 565                 ofd->ofd_osfs_unstable += ofd->ofd_tot_pending;
 566                 spin_unlock(&ofd->ofd_grant_lock);
 567
 568                 /* finally udpate cached statfs data */
 569                 ofd->ofd_osfs = *osfs;
 570                 ofd->ofd_osfs_age = cfs_time_current_64();
 571
 572                 ofd->ofd_statfs_inflight--; /* stop tracking */
 573                 if (ofd->ofd_statfs_inflight == 0)
 574                         ofd->ofd_osfs_inflight = 0;
 575                 spin_unlock(&ofd->ofd_osfs_lock);
 576
 577                 if (from_cache)
 578                         *from_cache = 0;
 579         } else {
 580                 /* use cached statfs data */
 581                 *osfs = ofd->ofd_osfs;
 582                 spin_unlock(&ofd->ofd_osfs_lock);
 583                 if (from_cache)
 584                         *from_cache = 1;
 585         }
 586
 587         GOTO(out, rc);
 588
 589 out:
 590         up_read(&ofd->ofd_lastid_rwsem);
 591
 592         return rc;
 593 }
 594
 595 int ofd_statfs(const struct lu_env *env,  struct obd_export *exp,
 596                struct obd_statfs *osfs, __u64 max_age, __u32 flags)
 597 {
 598         struct obd_device       *obd = class_exp2obd(exp);
 599         struct ofd_device       *ofd = ofd_dev(exp->exp_obd->obd_lu_dev);
 600         int                      rc;
 601
 602         ENTRY;
 603
 604         rc = ofd_statfs_internal(env, ofd, osfs, max_age, NULL);
 605         if (unlikely(rc))
 606                 GOTO(out, rc);
 607
 608         /* at least try to account for cached pages.  its still racy and
 609          * might be under-reporting if clients haven't announced their
 610          * caches with brw recently */
 611
 612         CDEBUG(D_SUPER | D_CACHE, "blocks cached "LPU64" granted "LPU64
 613                " pending "LPU64" free "LPU64" avail "LPU64"\n",
 614                ofd->ofd_tot_dirty, ofd->ofd_tot_granted, ofd->ofd_tot_pending,
 615                osfs->os_bfree << ofd->ofd_blockbits,
 616                osfs->os_bavail << ofd->ofd_blockbits);
 617
 618         osfs->os_bavail -= min_t(obd_size, osfs->os_bavail,
 619                                  ((ofd->ofd_tot_dirty + ofd->ofd_tot_pending +
 620                                    osfs->os_bsize - 1) >> ofd->ofd_blockbits));
 621
 622         /* The QoS code on the MDS does not care about space reserved for
 623          * precreate, so take it out. */
 624         if (exp_connect_flags(exp) & OBD_CONNECT_MDS) {
 625                 struct filter_export_data *fed;
 626
 627                 fed = &obd->obd_self_export->exp_filter_data;
 628                 osfs->os_bavail -= min_t(obd_size, osfs->os_bavail,
 629                                          fed->fed_grant >> ofd->ofd_blockbits);
 630         }
 631
 632         ofd_grant_sanity_check(obd, __FUNCTION__);
 633         CDEBUG(D_CACHE, LPU64" blocks: "LPU64" free, "LPU64" avail; "
 634                LPU64" objects: "LPU64" free; state %x\n",
 635                osfs->os_blocks, osfs->os_bfree, osfs->os_bavail,
 636                osfs->os_files, osfs->os_ffree, osfs->os_state);
 637
 638         if (OBD_FAIL_CHECK_VALUE(OBD_FAIL_OST_ENOINO,
 639                                  ofd->ofd_lut.lut_lsd.lsd_osd_index))
 640                 osfs->os_ffree = 0;
 641
 642         /* OS_STATE_READONLY can be set by OSD already */
 643         if (ofd->ofd_raid_degraded)
 644                 osfs->os_state |= OS_STATE_DEGRADED;
 645
 646         if (obd->obd_self_export != exp && ofd_grant_compat(exp, ofd)) {
 647                 /* clients which don't support OBD_CONNECT_GRANT_PARAM
 648                  * should not see a block size > page size, otherwise
 649                  * cl_lost_grant goes mad. Therefore, we emulate a 4KB (=2^12)
 650                  * block size which is the biggest block size known to work
 651                  * with all client's page size. */
 652                 osfs->os_blocks <<= ofd->ofd_blockbits - COMPAT_BSIZE_SHIFT;
 653                 osfs->os_bfree  <<= ofd->ofd_blockbits - COMPAT_BSIZE_SHIFT;
 654                 osfs->os_bavail <<= ofd->ofd_blockbits - COMPAT_BSIZE_SHIFT;
 655                 osfs->os_bsize    = 1 << COMPAT_BSIZE_SHIFT;
 656         }
 657
 658         if (OBD_FAIL_CHECK_VALUE(OBD_FAIL_OST_ENOSPC,
 659                                  ofd->ofd_lut.lut_lsd.lsd_osd_index))
 660                 osfs->os_bfree = osfs->os_bavail = 2;
 661
 662         EXIT;
 663 out:
 664         return rc;
 665 }
 666
 667 /* needed by echo client only for now, RPC handler uses ofd_setattr_hdl() */
 668 int ofd_echo_setattr(const struct lu_env *env, struct obd_export *exp,
 669                      struct obd_info *oinfo, struct obd_trans_info *oti)
 670 {
 671         struct ofd_thread_info  *info;
 672         struct ofd_device       *ofd = ofd_exp(exp);
 673         struct ldlm_namespace   *ns = ofd->ofd_namespace;
 674         struct ldlm_resource    *res;
 675         struct ofd_object       *fo;
 676         struct obdo             *oa = oinfo->oi_oa;
 677         struct lu_fid           *fid = &oa->o_oi.oi_fid;
 678         struct filter_fid       *ff = NULL;
 679         int                      rc = 0;
 680
 681         ENTRY;
 682
 683         info = ofd_info_init(env, exp);
 684
 685         ost_fid_build_resid(fid, &info->fti_resid);
 686
 687         /* This would be very bad - accidentally truncating a file when
 688          * changing the time or similar - bug 12203. */
 689         if (oa->o_valid & OBD_MD_FLSIZE &&
 690             oinfo->oi_policy.l_extent.end != OBD_OBJECT_EOF) {
 691                 static char mdsinum[48];
 692
 693                 if (oa->o_valid & OBD_MD_FLFID)
 694                         snprintf(mdsinum, sizeof(mdsinum) - 1,
 695                                  "of parent "DFID, oa->o_parent_seq,
 696                                  oa->o_parent_oid, 0);
 697                 else
 698                         mdsinum[0] = '\0';
 699
 700                 CERROR("%s: setattr from %s trying to truncate object "DFID
 701                        " %s\n", ofd_name(ofd), obd_export_nid2str(exp),
 702                        PFID(fid), mdsinum);
 703                 GOTO(out, rc = -EPERM);
 704         }
 705
 706         fo = ofd_object_find_exists(env, ofd, fid);
 707         if (IS_ERR(fo)) {
 708                 CERROR("%s: can't find object "DFID"\n",
 709                        ofd_name(ofd), PFID(fid));
 710                 GOTO(out, rc = PTR_ERR(fo));
 711         }
 712
 713         la_from_obdo(&info->fti_attr, oa, oa->o_valid);
 714         info->fti_attr.la_valid &= ~LA_TYPE;
 715
 716         if (oa->o_valid & OBD_MD_FLFID) {
 717                 ff = &info->fti_mds_fid;
 718                 ofd_prepare_fidea(ff, oa);
 719         }
 720
 721         /* setting objects attributes (including owner/group) */
 722         rc = ofd_attr_set(env, fo, &info->fti_attr, ff);
 723         if (rc)
 724                 GOTO(out_unlock, rc);
 725
 726         ofd_counter_incr(exp, LPROC_OFD_STATS_SETATTR, NULL, 1);
 727         EXIT;
 728 out_unlock:
 729         ofd_object_put(env, fo);
 730 out:
 731         if (rc == 0) {
 732                 /* we do not call this before to avoid lu_object_find() in
 733                  *  ->lvbo_update() holding another reference on the object.
 734                  * otherwise concurrent destroy can make the object unavailable
 735                  * for 2nd lu_object_find() waiting for the first reference
 736                  * to go... deadlock! */
 737                 res = ldlm_resource_get(ns, NULL, &info->fti_resid, LDLM_EXTENT, 0);
 738                 if (res != NULL) {
 739                         ldlm_res_lvbo_update(res, NULL, 0);
 740                         ldlm_resource_putref(res);
 741                 }
 742         }
 743
 744         return rc;
 745 }
 746
 747 int ofd_destroy_by_fid(const struct lu_env *env, struct ofd_device *ofd,
 748                        const struct lu_fid *fid, int orphan)
 749 {
 750         struct ofd_thread_info  *info = ofd_info(env);
 751         struct lustre_handle     lockh;
 752         __u64                    flags = LDLM_FL_AST_DISCARD_DATA;
 753         __u64                    rc = 0;
 754         ldlm_policy_data_t       policy = {
 755                                         .l_extent = { 0, OBD_OBJECT_EOF }
 756                                  };
 757         struct ofd_object       *fo;
 758
 759         ENTRY;
 760
 761         fo = ofd_object_find_exists(env, ofd, fid);
 762         if (IS_ERR(fo))
 763                 RETURN(PTR_ERR(fo));
 764
 765         /* Tell the clients that the object is gone now and that they should
 766          * throw away any cached pages. */
 767         ost_fid_build_resid(fid, &info->fti_resid);
 768         rc = ldlm_cli_enqueue_local(ofd->ofd_namespace, &info->fti_resid,
 769                                     LDLM_EXTENT, &policy, LCK_PW, &flags,
 770                                     ldlm_blocking_ast, ldlm_completion_ast,
 771                                     NULL, NULL, 0, LVB_T_NONE, NULL, &lockh);
 772
 773         /* We only care about the side-effects, just drop the lock. */
 774         if (rc == ELDLM_OK)
 775                 ldlm_lock_decref(&lockh, LCK_PW);
 776
 777         LASSERT(fo != NULL);
 778
 779         rc = ofd_object_destroy(env, fo, orphan);
 780         EXIT;
 781
 782         ofd_object_put(env, fo);
 783         RETURN(rc);
 784 }
 785
 786 /* needed by echo client only for now, RPC handler uses ofd_destroy_hdl() */
 787 int ofd_echo_destroy(const struct lu_env *env, struct obd_export *exp,
 788                      struct obdo *oa, struct lov_stripe_md *md,
 789                      struct obd_trans_info *oti, struct obd_export *md_exp,
 790                      void *capa)
 791 {
 792         struct ofd_device       *ofd = ofd_exp(exp);
 793         struct lu_fid           *fid = &oa->o_oi.oi_fid;
 794         int                      rc = 0;
 795
 796         ENTRY;
 797
 798         ofd_info_init(env, exp);
 799
 800         CDEBUG(D_HA, "%s: Destroy object "DFID"\n", ofd_name(ofd), PFID(fid));
 801
 802         rc = ofd_destroy_by_fid(env, ofd, fid, 0);
 803         if (rc == -ENOENT) {
 804                 CDEBUG(D_INODE, "%s: destroying non-existent object "DFID"\n",
 805                        ofd_name(ofd), PFID(fid));
 806                 GOTO(out, rc);
 807         } else if (rc != 0) {
 808                 CERROR("%s: error destroying object "DFID": %d\n",
 809                        ofd_name(ofd), PFID(fid), rc);
 810                 GOTO(out, rc);
 811         }
 812         EXIT;
 813 out:
 814         return rc;
 815 }
 816
 817 /* needed by echo client only for now, RPC handler uses ofd_create_hdl()
 818  * It is much simpler and just create objects */
 819 int ofd_echo_create(const struct lu_env *env, struct obd_export *exp,
 820                     struct obdo *oa, struct lov_stripe_md **ea,
 821                     struct obd_trans_info *oti)
 822 {
 823         struct ofd_device       *ofd = ofd_exp(exp);
 824         struct ofd_thread_info  *info;
 825         obd_seq                  seq = ostid_seq(&oa->o_oi);
 826         struct ofd_seq          *oseq;
 827         int                      rc = 0, diff = 1;
 828         obd_id                   next_id;
 829         int                      count;
 830
 831         ENTRY;
 832
 833         info = ofd_info_init(env, exp);
 834
 835         LASSERT(seq == FID_SEQ_ECHO);
 836         LASSERT(oa->o_valid & OBD_MD_FLGROUP);
 837
 838         CDEBUG(D_INFO, "ofd_create("DOSTID")\n", POSTID(&oa->o_oi));
 839
 840         down_read(&ofd->ofd_lastid_rwsem);
 841         /* Currently, for safe, we do not distinguish which LAST_ID is broken,
 842          * we may do that in the future.
 843          * Return -ENOSPC until the LAST_ID rebuilt. */
 844         if (unlikely(ofd->ofd_lastid_rebuilding))
 845                 GOTO(out_sem, rc = -ENOSPC);
 846
 847         oseq = ofd_seq_load(env, ofd, seq);
 848         if (IS_ERR(oseq)) {
 849                 CERROR("%s: Can't find FID Sequence "LPX64": rc = %ld\n",
 850                        ofd_name(ofd), seq, PTR_ERR(oseq));
 851                 GOTO(out_sem, rc = -EINVAL);
 852         }
 853
 854         mutex_lock(&oseq->os_create_lock);
 855         rc = ofd_grant_create(env, ofd_obd(ofd)->obd_self_export, &diff);
 856         if (rc < 0) {
 857                 CDEBUG(D_HA, "%s: failed to acquire grant space for "
 858                        "precreate (%d): rc = %d\n", ofd_name(ofd), diff, rc);
 859                 diff = 0;
 860                 GOTO(out, rc);
 861         }
 862
 863         next_id = ofd_seq_last_oid(oseq) + 1;
 864         count = ofd_precreate_batch(ofd, diff);
 865
 866         rc = ofd_precreate_objects(env, ofd, next_id, oseq, count, 0);
 867         if (rc < 0) {
 868                 CERROR("%s: unable to precreate: rc = %d\n",
 869                        ofd_name(ofd), rc);
 870         } else {
 871                 ostid_set_id(&oa->o_oi, ofd_seq_last_oid(oseq));
 872                 oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
 873                 rc = 0;
 874         }
 875
 876         ofd_grant_commit(env, ofd_obd(ofd)->obd_self_export, rc);
 877 out:
 878         mutex_unlock(&oseq->os_create_lock);
 879         if (rc == 0 && ea != NULL) {
 880                 struct lov_stripe_md *lsm = *ea;
 881
 882                 lsm->lsm_oi = oa->o_oi;
 883         }
 884         ofd_seq_put(env, oseq);
 885
 886 out_sem:
 887         up_read(&ofd->ofd_lastid_rwsem);
 888         RETURN(rc);
 889 }
 890
 891 /* needed by echo client only for now, RPC handler uses ofd_getattr_hdl() */
 892 int ofd_echo_getattr(const struct lu_env *env, struct obd_export *exp,
 893                      struct obd_info *oinfo)
 894 {
 895         struct ofd_device       *ofd = ofd_exp(exp);
 896         struct ofd_thread_info  *info;
 897         struct lu_fid           *fid = &oinfo->oi_oa->o_oi.oi_fid;
 898         struct ofd_object       *fo;
 899         int                      rc = 0;
 900
 901         ENTRY;
 902
 903         info = ofd_info_init(env, exp);
 904
 905         fo = ofd_object_find_exists(env, ofd, fid);
 906         if (IS_ERR(fo))
 907                 GOTO(out, rc = PTR_ERR(fo));
 908
 909         LASSERT(fo != NULL);
 910         rc = ofd_attr_get(env, fo, &info->fti_attr);
 911         oinfo->oi_oa->o_valid = OBD_MD_FLID;
 912         if (rc == 0) {
 913                 __u64 curr_version;
 914
 915                 obdo_from_la(oinfo->oi_oa, &info->fti_attr,
 916                              OFD_VALID_FLAGS | LA_UID | LA_GID);
 917
 918                 /* Store object version in reply */
 919                 curr_version = dt_version_get(env, ofd_object_child(fo));
 920                 if ((__s64)curr_version != -EOPNOTSUPP) {
 921                         oinfo->oi_oa->o_valid |= OBD_MD_FLDATAVERSION;
 922                         oinfo->oi_oa->o_data_version = curr_version;
 923                 }
 924         }
 925
 926         ofd_object_put(env, fo);
 927 out:
 928         RETURN(rc);
 929 }
 930
 931 static int ofd_ioc_get_obj_version(const struct lu_env *env,
 932                                    struct ofd_device *ofd, void *karg)
 933 {
 934         struct obd_ioctl_data *data = karg;
 935         struct lu_fid          fid;
 936         struct ofd_object     *fo;
 937         dt_obj_version_t       version;
 938         int                    rc = 0;
 939
 940         ENTRY;
 941
 942         if (data->ioc_inlbuf2 == NULL || data->ioc_inllen2 != sizeof(version))
 943                 GOTO(out, rc = -EINVAL);
 944
 945         if (data->ioc_inlbuf1 != NULL && data->ioc_inllen1 == sizeof(fid)) {
 946                 fid = *(struct lu_fid *)data->ioc_inlbuf1;
 947         } else if (data->ioc_inlbuf3 != NULL &&
 948                    data->ioc_inllen3 == sizeof(__u64) &&
 949                    data->ioc_inlbuf4 != NULL &&
 950                    data->ioc_inllen4 == sizeof(__u64)) {
 951                 struct ost_id ostid;
 952
 953                 ostid_set_seq(&ostid, *(__u64 *)data->ioc_inlbuf4);
 954                 ostid_set_id(&ostid, *(__u64 *)data->ioc_inlbuf3);
 955                 rc = ostid_to_fid(&fid, &ostid,
 956                                   ofd->ofd_lut.lut_lsd.lsd_osd_index);
 957                 if (rc != 0)
 958                         GOTO(out, rc);
 959         } else {
 960                 GOTO(out, rc = -EINVAL);
 961         }
 962
 963         if (!fid_is_sane(&fid))
 964                 GOTO(out, rc = -EINVAL);
 965
 966         fo = ofd_object_find(env, ofd, &fid);
 967         if (IS_ERR(fo))
 968                 GOTO(out, rc = PTR_ERR(fo));
 969
 970         if (!ofd_object_exists(fo))
 971                 GOTO(out_fo, rc = -ENOENT);
 972
 973         if (lu_object_remote(&fo->ofo_obj.do_lu))
 974                 GOTO(out_fo, rc = -EREMOTE);
 975
 976         version = dt_version_get(env, ofd_object_child(fo));
 977         if (version == 0)
 978                 GOTO(out_fo, rc = -EIO);
 979
 980         *(dt_obj_version_t *)data->ioc_inlbuf2 = version;
 981
 982         EXIT;
 983 out_fo:
 984         ofd_object_put(env, fo);
 985 out:
 986         return rc;
 987 }
 988
 989 int ofd_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
 990                   void *karg, void *uarg)
 991 {
 992         struct lu_env            env;
 993         struct ofd_device       *ofd = ofd_exp(exp);
 994         struct obd_device       *obd = ofd_obd(ofd);
 995         int                      rc;
 996
 997         ENTRY;
 998
 999         CDEBUG(D_IOCTL, "handling ioctl cmd %#x\n", cmd);
1000         rc = lu_env_init(&env, LCT_DT_THREAD);
1001         if (rc)
1002                 RETURN(rc);
1003
1004         switch (cmd) {
1005         case OBD_IOC_ABORT_RECOVERY:
1006                 CERROR("%s: aborting recovery\n", obd->obd_name);
1007                 target_stop_recovery_thread(obd);
1008                 break;
1009         case OBD_IOC_SYNC:
1010                 CDEBUG(D_RPCTRACE, "syncing ost %s\n", obd->obd_name);
1011                 rc = dt_sync(&env, ofd->ofd_osd);
1012                 break;
1013         case OBD_IOC_SET_READONLY:
1014                 rc = dt_sync(&env, ofd->ofd_osd);
1015                 if (rc == 0)
1016                         rc = dt_ro(&env, ofd->ofd_osd);
1017                 break;
1018         case OBD_IOC_START_LFSCK: {
1019                 struct obd_ioctl_data *data = karg;
1020                 struct lfsck_start_param lsp;
1021
1022                 if (unlikely(data == NULL)) {
1023                         rc = -EINVAL;
1024                         break;
1025                 }
1026
1027                 lsp.lsp_start = (struct lfsck_start *)(data->ioc_inlbuf1);
1028                 lsp.lsp_index_valid = 0;
1029                 rc = lfsck_start(&env, ofd->ofd_osd, &lsp);
1030                 break;
1031         }
1032         case OBD_IOC_STOP_LFSCK: {
1033                 struct obd_ioctl_data *data = karg;
1034                 struct lfsck_stop      stop;
1035
1036                 stop.ls_status = LS_STOPPED;
1037                 /* Old lfsck utils may pass NULL @stop. */
1038                 if (data->ioc_inlbuf1 == NULL)
1039                         stop.ls_flags = 0;
1040                 else
1041                         stop.ls_flags =
1042                         ((struct lfsck_stop *)(data->ioc_inlbuf1))->ls_flags;
1043
1044                 rc = lfsck_stop(&env, ofd->ofd_osd, &stop);
1045                 break;
1046         }
1047         case OBD_IOC_GET_OBJ_VERSION:
1048                 rc = ofd_ioc_get_obj_version(&env, ofd, karg);
1049                 break;
1050         default:
1051                 CERROR("%s: not supported cmd = %d\n", obd->obd_name, cmd);
1052                 rc = -ENOTTY;
1053         }
1054
1055         lu_env_fini(&env);
1056         RETURN(rc);
1057 }
1058
1059 static int ofd_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
1060 {
1061         int rc = 0;
1062
1063         ENTRY;
1064
1065         switch(stage) {
1066         case OBD_CLEANUP_EARLY:
1067                 break;
1068         case OBD_CLEANUP_EXPORTS:
1069                 target_cleanup_recovery(obd);
1070                 break;
1071         }
1072         RETURN(rc);
1073 }
1074
1075 static int ofd_ping(const struct lu_env *env, struct obd_export *exp)
1076 {
1077         ofd_fmd_expire(exp);
1078         return 0;
1079 }
1080
1081 static int ofd_health_check(const struct lu_env *nul, struct obd_device *obd)
1082 {
1083         struct ofd_device       *ofd = ofd_dev(obd->obd_lu_dev);
1084         struct ofd_thread_info  *info;
1085         struct lu_env            env;
1086 #ifdef USE_HEALTH_CHECK_WRITE
1087         struct thandle          *th;
1088 #endif
1089         int                      rc = 0;
1090
1091         /* obd_proc_read_health pass NULL env, we need real one */
1092         rc = lu_env_init(&env, LCT_DT_THREAD);
1093         if (rc)
1094                 RETURN(rc);
1095
1096         info = ofd_info_init(&env, NULL);
1097         rc = dt_statfs(&env, ofd->ofd_osd, &info->fti_u.osfs);
1098         if (unlikely(rc))
1099                 GOTO(out, rc);
1100
1101         if (info->fti_u.osfs.os_state == OS_STATE_READONLY)
1102                 GOTO(out, rc = -EROFS);
1103
1104 #ifdef USE_HEALTH_CHECK_WRITE
1105         OBD_ALLOC(info->fti_buf.lb_buf, PAGE_CACHE_SIZE);
1106         if (info->fti_buf.lb_buf == NULL)
1107                 GOTO(out, rc = -ENOMEM);
1108
1109         info->fti_buf.lb_len = PAGE_CACHE_SIZE;
1110         info->fti_off = 0;
1111
1112         th = dt_trans_create(&env, ofd->ofd_osd);
1113         if (IS_ERR(th))
1114                 GOTO(out, rc = PTR_ERR(th));
1115
1116         rc = dt_declare_record_write(&env, ofd->ofd_health_check_file,
1117                                      &info->fti_buf, info->fti_off, th);
1118         if (rc == 0) {
1119                 th->th_sync = 1; /* sync IO is needed */
1120                 rc = dt_trans_start_local(&env, ofd->ofd_osd, th);
1121                 if (rc == 0)
1122                         rc = dt_record_write(&env, ofd->ofd_health_check_file,
1123                                              &info->fti_buf, &info->fti_off,
1124                                              th);
1125         }
1126         dt_trans_stop(&env, ofd->ofd_osd, th);
1127
1128         OBD_FREE(info->fti_buf.lb_buf, PAGE_CACHE_SIZE);
1129
1130         CDEBUG(D_INFO, "write 1 page synchronously for checking io rc %d\n",rc);
1131 #endif
1132 out:
1133         lu_env_fini(&env);
1134         return !!rc;
1135 }
1136
1137 /*
1138  * Handle quota control requests to consult current usage/limit.
1139  *
1140  * \param obd - is the obd device associated with the ofd
1141  * \param exp - is the client's export
1142  * \param oqctl - is the obd_quotactl request to be processed
1143  */
1144 static int ofd_quotactl(struct obd_device *obd, struct obd_export *exp,
1145                         struct obd_quotactl *oqctl)
1146 {
1147         struct ofd_device  *ofd = ofd_dev(obd->obd_lu_dev);
1148         struct lu_env       env;
1149         int                 rc;
1150         ENTRY;
1151
1152         /* report success for quota on/off for interoperability with current MDT
1153          * stack */
1154         if (oqctl->qc_cmd == Q_QUOTAON || oqctl->qc_cmd == Q_QUOTAOFF)
1155                 RETURN(0);
1156
1157         rc = lu_env_init(&env, LCT_DT_THREAD);
1158         if (rc)
1159                 RETURN(rc);
1160
1161         rc = lquotactl_slv(&env, ofd->ofd_osd, oqctl);
1162         lu_env_fini(&env);
1163
1164         RETURN(rc);
1165 }
1166
1167 struct obd_ops ofd_obd_ops = {
1168         .o_owner                = THIS_MODULE,
1169         .o_connect              = ofd_obd_connect,
1170         .o_reconnect            = ofd_obd_reconnect,
1171         .o_disconnect           = ofd_obd_disconnect,
1172         .o_create               = ofd_echo_create,
1173         .o_statfs               = ofd_statfs,
1174         .o_setattr              = ofd_echo_setattr,
1175         .o_preprw               = ofd_preprw,
1176         .o_commitrw             = ofd_commitrw,
1177         .o_destroy              = ofd_echo_destroy,
1178         .o_init_export          = ofd_init_export,
1179         .o_destroy_export       = ofd_destroy_export,
1180         .o_postrecov            = ofd_obd_postrecov,
1181         .o_getattr              = ofd_echo_getattr,
1182         .o_iocontrol            = ofd_iocontrol,
1183         .o_precleanup           = ofd_precleanup,
1184         .o_ping                 = ofd_ping,
1185         .o_health_check         = ofd_health_check,
1186         .o_quotactl             = ofd_quotactl,
1187         .o_set_info_async       = ofd_set_info_async,
1188         .o_get_info             = ofd_get_info,
1189 };