lustre/lov/lov_request.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of the Lustre file system, http://www.lustre.org
   7  *   Lustre is a trademark of Cluster File Systems, Inc.
   8  *
   9  *   You may have signed or agreed to another license before downloading
  10  *   this software.  If so, you are bound by the terms and conditions
  11  *   of that agreement, and the following does not apply to you.  See the
  12  *   LICENSE file included with this distribution for more information.
  13  *
  14  *   If you did not agree to a different license, then this copy of Lustre
  15  *   is open source software; you can redistribute it and/or modify it
  16  *   under the terms of version 2 of the GNU General Public License as
  17  *   published by the Free Software Foundation.
  18  *
  19  *   In either case, Lustre is distributed in the hope that it will be
  20  *   useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  21  *   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *   license text for more details.
  23  */
  24
  25 #ifndef EXPORT_SYMTAB
  26 # define EXPORT_SYMTAB
  27 #endif
  28 #define DEBUG_SUBSYSTEM S_LOV
  29
  30 #ifdef __KERNEL__
  31 #include <libcfs/libcfs.h>
  32 #else
  33 #include <liblustre.h>
  34 #endif
  35
  36 #include <obd_class.h>
  37 #include <obd_lov.h>
  38 #include <lustre/lustre_idl.h>
  39
  40 #include "lov_internal.h"
  41
  42 static void lov_init_set(struct lov_request_set *set)
  43 {
  44         set->set_count = 0;
  45         set->set_completes = 0;
  46         set->set_success = 0;
  47         set->set_cookies = 0;
  48         CFS_INIT_LIST_HEAD(&set->set_list);
  49         atomic_set(&set->set_refcount, 1);
  50 }
  51
  52 static void lov_finish_set(struct lov_request_set *set)
  53 {
  54         struct list_head *pos, *n;
  55         ENTRY;
  56
  57         LASSERT(set);
  58         list_for_each_safe(pos, n, &set->set_list) {
  59                 struct lov_request *req = list_entry(pos, struct lov_request,
  60                                                      rq_link);
  61                 list_del_init(&req->rq_link);
  62
  63                 if (req->rq_oi.oi_oa)
  64                         obdo_free(req->rq_oi.oi_oa);
  65                 if (req->rq_oi.oi_md)
  66                         OBD_FREE(req->rq_oi.oi_md, req->rq_buflen);
  67                 if (req->rq_oi.oi_osfs)
  68                         OBD_FREE(req->rq_oi.oi_osfs,
  69                                  sizeof(*req->rq_oi.oi_osfs));
  70                 OBD_FREE(req, sizeof(*req));
  71         }
  72
  73         if (set->set_pga) {
  74                 int len = set->set_oabufs * sizeof(*set->set_pga);
  75                 OBD_FREE(set->set_pga, len);
  76         }
  77         if (set->set_lockh)
  78                 lov_llh_put(set->set_lockh);
  79
  80         OBD_FREE(set, sizeof(*set));
  81         EXIT;
  82 }
  83
  84 void lov_update_set(struct lov_request_set *set,
  85                     struct lov_request *req, int rc)
  86 {
  87         req->rq_complete = 1;
  88         req->rq_rc = rc;
  89
  90         set->set_completes++;
  91         if (rc == 0)
  92                 set->set_success++;
  93 }
  94
  95 int lov_update_common_set(struct lov_request_set *set,
  96                           struct lov_request *req, int rc)
  97 {
  98         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
  99         ENTRY;
 100
 101         lov_update_set(set, req, rc);
 102
 103         /* grace error on inactive ost */
 104         if (rc && !(lov->lov_tgts[req->rq_idx] &&
 105                     lov->lov_tgts[req->rq_idx]->ltd_active))
 106                 rc = 0;
 107
 108         /* FIXME in raid1 regime, should return 0 */
 109         RETURN(rc);
 110 }
 111
 112 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set)
 113 {
 114         list_add_tail(&req->rq_link, &set->set_list);
 115         set->set_count++;
 116 }
 117
 118 int lov_update_enqueue_set(struct lov_request *req, __u32 mode, int rc)
 119 {
 120         struct lov_request_set *set = req->rq_rqset;
 121         struct lustre_handle *lov_lockhp;
 122         struct lov_oinfo *loi;
 123         ENTRY;
 124
 125         LASSERT(set != NULL);
 126         LASSERT(set->set_oi != NULL);
 127
 128         lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
 129         loi = &set->set_oi->oi_md->lsm_oinfo[req->rq_stripe];
 130
 131         /* XXX LOV STACKING: OSC gets a copy, created in lov_prep_enqueue_set
 132          * and that copy can be arbitrarily out of date.
 133          *
 134          * The LOV API is due for a serious rewriting anyways, and this
 135          * can be addressed then. */
 136
 137         if (rc == ELDLM_OK) {
 138                 struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
 139                 __u64 tmp;
 140
 141                 LASSERT(lock != NULL);
 142                 lov_stripe_lock(set->set_oi->oi_md);
 143                 loi->loi_lvb = req->rq_oi.oi_md->lsm_oinfo->loi_lvb;
 144                 tmp = loi->loi_lvb.lvb_size;
 145                 /* Extend KMS up to the end of this lock and no further
 146                  * A lock on [x,y] means a KMS of up to y + 1 bytes! */
 147                 if (tmp > lock->l_policy_data.l_extent.end)
 148                         tmp = lock->l_policy_data.l_extent.end + 1;
 149                 if (tmp >= loi->loi_kms) {
 150                         LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64
 151                                    ", kms="LPU64, loi->loi_lvb.lvb_size, tmp);
 152                         loi->loi_kms = tmp;
 153                         loi->loi_kms_valid = 1;
 154                 } else {
 155                         LDLM_DEBUG(lock, "lock acquired, setting rss="
 156                                    LPU64"; leaving kms="LPU64", end="LPU64,
 157                                    loi->loi_lvb.lvb_size, loi->loi_kms,
 158                                    lock->l_policy_data.l_extent.end);
 159                 }
 160                 lov_stripe_unlock(set->set_oi->oi_md);
 161                 ldlm_lock_allow_match(lock);
 162                 LDLM_LOCK_PUT(lock);
 163         } else if ((rc == ELDLM_LOCK_ABORTED) &&
 164                    (set->set_ei->ei_flags & LDLM_FL_HAS_INTENT)) {
 165                 memset(lov_lockhp, 0, sizeof(*lov_lockhp));
 166                 lov_stripe_lock(set->set_oi->oi_md);
 167                 loi->loi_lvb = req->rq_oi.oi_md->lsm_oinfo->loi_lvb;
 168                 lov_stripe_unlock(set->set_oi->oi_md);
 169                 CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
 170                        " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms);
 171                 rc = ELDLM_OK;
 172         } else {
 173                 struct obd_export *exp = set->set_exp;
 174                 struct lov_obd *lov = &exp->exp_obd->u.lov;
 175
 176                 memset(lov_lockhp, 0, sizeof(*lov_lockhp));
 177                 if (lov->lov_tgts[req->rq_idx] &&
 178                     lov->lov_tgts[req->rq_idx]->ltd_active) {
 179                         if (rc != -EINTR)
 180                                 CERROR("enqueue objid "LPX64" subobj "
 181                                        LPX64" on OST idx %d: rc %d\n",
 182                                        set->set_oi->oi_md->lsm_object_id,
 183                                        loi->loi_id, loi->loi_ost_idx, rc);
 184                 } else {
 185                         rc = ELDLM_OK;
 186                 }
 187         }
 188         lov_update_set(set, req, rc);
 189         RETURN(rc);
 190 }
 191
 192 /* The callback for osc_enqueue that updates lov info for every OSC request. */
 193 static int cb_update_enqueue(struct obd_info *oinfo, int rc)
 194 {
 195         struct obd_enqueue_info *einfo;
 196         struct lov_request *lovreq;
 197
 198         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 199         einfo = lovreq->rq_rqset->set_ei;
 200         return lov_update_enqueue_set(lovreq, einfo->ei_mode, rc);
 201 }
 202
 203 static int enqueue_done(struct lov_request_set *set, __u32 mode)
 204 {
 205         struct lov_request *req;
 206         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 207         int rc = 0;
 208         ENTRY;
 209
 210         /* enqueue/match success, just return */
 211         if (set->set_completes && set->set_completes == set->set_success)
 212                 RETURN(0);
 213
 214         /* cancel enqueued/matched locks */
 215         list_for_each_entry(req, &set->set_list, rq_link) {
 216                 struct lustre_handle *lov_lockhp;
 217
 218                 if (!req->rq_complete || req->rq_rc)
 219                         continue;
 220
 221                 lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
 222                 LASSERT(lov_lockhp);
 223                 if (!lustre_handle_is_used(lov_lockhp))
 224                         continue;
 225
 226                 rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp,
 227                                 req->rq_oi.oi_md, mode, lov_lockhp);
 228                 if (rc && lov->lov_tgts[req->rq_idx] &&
 229                     lov->lov_tgts[req->rq_idx]->ltd_active)
 230                         CERROR("cancelling obdjid "LPX64" on OST "
 231                                "idx %d error: rc = %d\n",
 232                                req->rq_oi.oi_md->lsm_object_id,
 233                                req->rq_idx, rc);
 234         }
 235         if (set->set_lockh)
 236                 lov_llh_put(set->set_lockh);
 237         RETURN(rc);
 238 }
 239
 240 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc)
 241 {
 242         int ret = 0;
 243         ENTRY;
 244
 245         if (set == NULL)
 246                 RETURN(0);
 247         LASSERT(set->set_exp);
 248         /* Do enqueue_done only for sync requests and if any request
 249          * succeeded. */
 250         if (!set->set_ei->ei_rqset) {
 251                 if (rc)
 252                         set->set_completes = 0;
 253                 ret = enqueue_done(set, mode);
 254         } else if (set->set_lockh)
 255                 lov_llh_put(set->set_lockh);
 256
 257         if (atomic_dec_and_test(&set->set_refcount))
 258                 lov_finish_set(set);
 259
 260         RETURN(rc ? rc : ret);
 261 }
 262
 263 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
 264                          struct obd_enqueue_info *einfo,
 265                          struct lov_request_set **reqset)
 266 {
 267         struct lov_obd *lov = &exp->exp_obd->u.lov;
 268         struct lov_request_set *set;
 269         int i, rc = 0;
 270         struct lov_oinfo *loi;
 271         ENTRY;
 272
 273         OBD_ALLOC(set, sizeof(*set));
 274         if (set == NULL)
 275                 RETURN(-ENOMEM);
 276         lov_init_set(set);
 277
 278         set->set_exp = exp;
 279         set->set_oi = oinfo;
 280         set->set_ei = einfo;
 281         set->set_lockh = lov_llh_new(oinfo->oi_md);
 282         if (set->set_lockh == NULL)
 283                 GOTO(out_set, rc = -ENOMEM);
 284         oinfo->oi_lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 285
 286         loi = oinfo->oi_md->lsm_oinfo;
 287         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++, loi++) {
 288                 struct lov_request *req;
 289                 obd_off start, end;
 290
 291                 if (!lov_stripe_intersects(oinfo->oi_md, i,
 292                                            oinfo->oi_policy.l_extent.start,
 293                                            oinfo->oi_policy.l_extent.end,
 294                                            &start, &end))
 295                         continue;
 296
 297                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 298                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 299                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 300                         continue;
 301                 }
 302
 303                 OBD_ALLOC(req, sizeof(*req));
 304                 if (req == NULL)
 305                         GOTO(out_set, rc = -ENOMEM);
 306
 307                 req->rq_buflen = sizeof(*req->rq_oi.oi_md) +
 308                         sizeof(struct lov_oinfo);
 309                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 310                 if (req->rq_oi.oi_md == NULL) {
 311                         OBD_FREE(req, sizeof(*req));
 312                         GOTO(out_set, rc = -ENOMEM);
 313                 }
 314
 315                 req->rq_rqset = set;
 316                 /* Set lov request specific parameters. */
 317                 req->rq_oi.oi_lockh = set->set_lockh->llh_handles + i;
 318                 req->rq_oi.oi_cb_up = cb_update_enqueue;
 319
 320                 LASSERT(req->rq_oi.oi_lockh);
 321
 322                 req->rq_oi.oi_policy.l_extent.gid =
 323                         oinfo->oi_policy.l_extent.gid;
 324                 req->rq_oi.oi_policy.l_extent.start = start;
 325                 req->rq_oi.oi_policy.l_extent.end = end;
 326
 327                 req->rq_idx = loi->loi_ost_idx;
 328                 req->rq_stripe = i;
 329
 330                 /* XXX LOV STACKING: submd should be from the subobj */
 331                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 332                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 333                 req->rq_oi.oi_md->lsm_oinfo->loi_kms_valid =
 334                         loi->loi_kms_valid;
 335                 req->rq_oi.oi_md->lsm_oinfo->loi_kms = loi->loi_kms;
 336                 req->rq_oi.oi_md->lsm_oinfo->loi_lvb = loi->loi_lvb;
 337
 338                 lov_set_add_req(req, set);
 339         }
 340         if (!set->set_count)
 341                 GOTO(out_set, rc = -EIO);
 342         *reqset = set;
 343         RETURN(0);
 344 out_set:
 345         lov_fini_enqueue_set(set, einfo->ei_mode, rc);
 346         RETURN(rc);
 347 }
 348
 349 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
 350                          int rc)
 351 {
 352         int ret = rc;
 353         ENTRY;
 354
 355         if (rc == 1)
 356                 ret = 0;
 357         else if (rc == 0)
 358                 ret = 1;
 359         lov_update_set(set, req, ret);
 360         RETURN(rc);
 361 }
 362
 363 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags)
 364 {
 365         int rc = 0;
 366         ENTRY;
 367
 368         if (set == NULL)
 369                 RETURN(0);
 370         LASSERT(set->set_exp);
 371         rc = enqueue_done(set, mode);
 372         if ((set->set_count == set->set_success) &&
 373             (flags & LDLM_FL_TEST_LOCK))
 374                 lov_llh_put(set->set_lockh);
 375
 376         if (atomic_dec_and_test(&set->set_refcount))
 377                 lov_finish_set(set);
 378
 379         RETURN(rc);
 380 }
 381
 382 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
 383                        struct lov_stripe_md *lsm, ldlm_policy_data_t *policy,
 384                        __u32 mode, struct lustre_handle *lockh,
 385                        struct lov_request_set **reqset)
 386 {
 387         struct lov_obd *lov = &exp->exp_obd->u.lov;
 388         struct lov_request_set *set;
 389         int i, rc = 0;
 390         struct lov_oinfo *loi;
 391         ENTRY;
 392
 393         OBD_ALLOC(set, sizeof(*set));
 394         if (set == NULL)
 395                 RETURN(-ENOMEM);
 396         lov_init_set(set);
 397
 398         set->set_exp = exp;
 399         set->set_oi = oinfo;
 400         set->set_oi->oi_md = lsm;
 401         set->set_lockh = lov_llh_new(lsm);
 402         if (set->set_lockh == NULL)
 403                 GOTO(out_set, rc = -ENOMEM);
 404         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 405
 406         for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++, loi++){
 407                 struct lov_request *req;
 408                 obd_off start, end;
 409
 410                 if (!lov_stripe_intersects(lsm, i, policy->l_extent.start,
 411                                            policy->l_extent.end, &start, &end))
 412                         continue;
 413
 414                 /* FIXME raid1 should grace this error */
 415                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 416                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 417                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 418                         GOTO(out_set, rc = -EIO);
 419                 }
 420
 421                 OBD_ALLOC(req, sizeof(*req));
 422                 if (req == NULL)
 423                         GOTO(out_set, rc = -ENOMEM);
 424
 425                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 426                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 427                 if (req->rq_oi.oi_md == NULL) {
 428                         OBD_FREE(req, sizeof(*req));
 429                         GOTO(out_set, rc = -ENOMEM);
 430                 }
 431
 432                 req->rq_oi.oi_policy.l_extent.start = start;
 433                 req->rq_oi.oi_policy.l_extent.end = end;
 434                 req->rq_oi.oi_policy.l_extent.gid = policy->l_extent.gid;
 435
 436                 req->rq_idx = loi->loi_ost_idx;
 437                 req->rq_stripe = i;
 438
 439                 /* XXX LOV STACKING: submd should be from the subobj */
 440                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 441                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 442
 443                 lov_set_add_req(req, set);
 444         }
 445         if (!set->set_count)
 446                 GOTO(out_set, rc = -EIO);
 447         *reqset = set;
 448         RETURN(rc);
 449 out_set:
 450         lov_fini_match_set(set, mode, 0);
 451         RETURN(rc);
 452 }
 453
 454 int lov_fini_cancel_set(struct lov_request_set *set)
 455 {
 456         int rc = 0;
 457         ENTRY;
 458
 459         if (set == NULL)
 460                 RETURN(0);
 461
 462         LASSERT(set->set_exp);
 463         if (set->set_lockh)
 464                 lov_llh_put(set->set_lockh);
 465
 466         if (atomic_dec_and_test(&set->set_refcount))
 467                 lov_finish_set(set);
 468
 469         RETURN(rc);
 470 }
 471
 472 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
 473                         struct lov_stripe_md *lsm, __u32 mode,
 474                         struct lustre_handle *lockh,
 475                         struct lov_request_set **reqset)
 476 {
 477         struct lov_request_set *set;
 478         int i, rc = 0;
 479         struct lov_oinfo *loi;
 480         ENTRY;
 481
 482         OBD_ALLOC(set, sizeof(*set));
 483         if (set == NULL)
 484                 RETURN(-ENOMEM);
 485         lov_init_set(set);
 486
 487         set->set_exp = exp;
 488         set->set_oi = oinfo;
 489         set->set_oi->oi_md = lsm;
 490         set->set_lockh = lov_handle2llh(lockh);
 491         if (set->set_lockh == NULL) {
 492                 CERROR("LOV: invalid lov lock handle %p\n", lockh);
 493                 GOTO(out_set, rc = -EINVAL);
 494         }
 495         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 496
 497         for (i = 0,loi = lsm->lsm_oinfo; i < lsm->lsm_stripe_count; i++, loi++){
 498                 struct lov_request *req;
 499                 struct lustre_handle *lov_lockhp;
 500
 501                 lov_lockhp = set->set_lockh->llh_handles + i;
 502                 if (!lustre_handle_is_used(lov_lockhp)) {
 503                         CDEBUG(D_HA, "lov idx %d subobj "LPX64" no lock?\n",
 504                                loi->loi_ost_idx, loi->loi_id);
 505                         continue;
 506                 }
 507
 508                 OBD_ALLOC(req, sizeof(*req));
 509                 if (req == NULL)
 510                         GOTO(out_set, rc = -ENOMEM);
 511
 512                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 513                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 514                 if (req->rq_oi.oi_md == NULL) {
 515                         OBD_FREE(req, sizeof(*req));
 516                         GOTO(out_set, rc = -ENOMEM);
 517                 }
 518
 519                 req->rq_idx = loi->loi_ost_idx;
 520                 req->rq_stripe = i;
 521
 522                 /* XXX LOV STACKING: submd should be from the subobj */
 523                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 524                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 525
 526                 lov_set_add_req(req, set);
 527         }
 528         if (!set->set_count)
 529                 GOTO(out_set, rc = -EIO);
 530         *reqset = set;
 531         RETURN(rc);
 532 out_set:
 533         lov_fini_cancel_set(set);
 534         RETURN(rc);
 535 }
 536
 537 static int create_done(struct obd_export *exp, struct lov_request_set *set,
 538                        struct lov_stripe_md **lsmp)
 539 {
 540         struct lov_obd *lov = &exp->exp_obd->u.lov;
 541         struct obd_trans_info *oti = set->set_oti;
 542         struct obdo *src_oa = set->set_oi->oi_oa;
 543         struct lov_request *req;
 544         struct obdo *ret_oa = NULL;
 545         int attrset = 0, rc = 0;
 546         ENTRY;
 547
 548         LASSERT(set->set_completes);
 549
 550         /* try alloc objects on other osts if osc_create fails for
 551          * exceptions: RPC failure, ENOSPC, etc */
 552         if (set->set_count != set->set_success) {
 553                 list_for_each_entry (req, &set->set_list, rq_link) {
 554                         if (req->rq_rc == 0)
 555                                 continue;
 556
 557                         set->set_completes--;
 558                         req->rq_complete = 0;
 559
 560                         rc = qos_remedy_create(set, req);
 561                         lov_update_create_set(set, req, rc);
 562
 563                         if (rc)
 564                                 break;
 565                 }
 566         }
 567
 568         /* no successful creates */
 569         if (set->set_success == 0)
 570                 GOTO(cleanup, rc);
 571
 572         /* If there was an explicit stripe set, fail.  Otherwise, we
 573          * got some objects and that's not bad. */
 574         if (set->set_count != set->set_success) {
 575                 if (*lsmp)
 576                         GOTO(cleanup, rc);
 577                 set->set_count = set->set_success;
 578                 qos_shrink_lsm(set);
 579         }
 580
 581         ret_oa = obdo_alloc();
 582         if (ret_oa == NULL)
 583                 GOTO(cleanup, rc = -ENOMEM);
 584
 585         list_for_each_entry(req, &set->set_list, rq_link) {
 586                 if (!req->rq_complete || req->rq_rc)
 587                         continue;
 588                 lov_merge_attrs(ret_oa, req->rq_oi.oi_oa,
 589                                 req->rq_oi.oi_oa->o_valid, set->set_oi->oi_md,
 590                                 req->rq_stripe, &attrset);
 591         }
 592         if (src_oa->o_valid & OBD_MD_FLSIZE &&
 593             ret_oa->o_size != src_oa->o_size) {
 594                 CERROR("original size "LPU64" isn't new object size "LPU64"\n",
 595                        src_oa->o_size, ret_oa->o_size);
 596                 LBUG();
 597         }
 598         ret_oa->o_id = src_oa->o_id;
 599         memcpy(src_oa, ret_oa, sizeof(*src_oa));
 600         obdo_free(ret_oa);
 601
 602         *lsmp = set->set_oi->oi_md;
 603         GOTO(done, rc = 0);
 604
 605 cleanup:
 606         list_for_each_entry(req, &set->set_list, rq_link) {
 607                 struct obd_export *sub_exp;
 608                 int err = 0;
 609
 610                 if (!req->rq_complete || req->rq_rc)
 611                         continue;
 612
 613                 sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp;
 614                 err = obd_destroy(sub_exp, req->rq_oi.oi_oa, NULL, oti, NULL);
 615                 if (err)
 616                         CERROR("Failed to uncreate objid "LPX64" subobj "
 617                                LPX64" on OST idx %d: rc = %d\n",
 618                                src_oa->o_id, req->rq_oi.oi_oa->o_id,
 619                                req->rq_idx, rc);
 620         }
 621         if (*lsmp == NULL)
 622                 obd_free_memmd(exp, &set->set_oi->oi_md);
 623 done:
 624         if (oti && set->set_cookies) {
 625                 oti->oti_logcookies = set->set_cookies;
 626                 if (!set->set_cookie_sent) {
 627                         oti_free_cookies(oti);
 628                         src_oa->o_valid &= ~OBD_MD_FLCOOKIE;
 629                 } else {
 630                         src_oa->o_valid |= OBD_MD_FLCOOKIE;
 631                 }
 632         }
 633         RETURN(rc);
 634 }
 635
 636 int lov_fini_create_set(struct lov_request_set *set,struct lov_stripe_md **lsmp)
 637 {
 638         int rc = 0;
 639         ENTRY;
 640
 641         if (set == NULL)
 642                 RETURN(0);
 643         LASSERT(set->set_exp);
 644         if (set->set_completes)
 645                 rc = create_done(set->set_exp, set, lsmp);
 646
 647         if (atomic_dec_and_test(&set->set_refcount))
 648                 lov_finish_set(set);
 649
 650         RETURN(rc);
 651 }
 652
 653 int lov_update_create_set(struct lov_request_set *set,
 654                           struct lov_request *req, int rc)
 655 {
 656         struct obd_trans_info *oti = set->set_oti;
 657         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 658         struct lov_oinfo *loi;
 659         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 660         ENTRY;
 661
 662         req->rq_stripe = set->set_success;
 663         loi = &lsm->lsm_oinfo[req->rq_stripe];
 664
 665         if (rc && lov->lov_tgts[req->rq_idx] &&
 666             lov->lov_tgts[req->rq_idx]->ltd_active) {
 667                 CERROR("error creating fid "LPX64" sub-object"
 668                        " on OST idx %d/%d: rc = %d\n",
 669                        set->set_oi->oi_oa->o_id, req->rq_idx,
 670                        lsm->lsm_stripe_count, rc);
 671                 if (rc > 0) {
 672                         CERROR("obd_create returned invalid err %d\n", rc);
 673                         rc = -EIO;
 674                 }
 675         }
 676         lov_update_set(set, req, rc);
 677         if (rc)
 678                 RETURN(rc);
 679
 680         if (oti && oti->oti_objid)
 681                 oti->oti_objid[req->rq_idx] = req->rq_oi.oi_oa->o_id;
 682
 683         loi->loi_id = req->rq_oi.oi_oa->o_id;
 684         loi->loi_ost_idx = req->rq_idx;
 685         CDEBUG(D_INODE, "objid "LPX64" has subobj "LPX64"/"LPU64" at idx %d\n",
 686                lsm->lsm_object_id, loi->loi_id, loi->loi_id, req->rq_idx);
 687         loi_init(loi);
 688
 689         if (oti && set->set_cookies)
 690                 ++oti->oti_logcookies;
 691         if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCOOKIE)
 692                 set->set_cookie_sent++;
 693
 694         RETURN(0);
 695 }
 696
 697 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oinfo,
 698                         struct lov_stripe_md **lsmp, struct obdo *src_oa,
 699                         struct obd_trans_info *oti,
 700                         struct lov_request_set **reqset)
 701 {
 702         struct lov_request_set *set;
 703         int rc = 0;
 704         ENTRY;
 705
 706         OBD_ALLOC(set, sizeof(*set));
 707         if (set == NULL)
 708                 RETURN(-ENOMEM);
 709         lov_init_set(set);
 710
 711         set->set_exp = exp;
 712         set->set_oi = oinfo;
 713         set->set_oi->oi_md = *lsmp;
 714         set->set_oi->oi_oa = src_oa;
 715         set->set_oti = oti;
 716
 717         rc = qos_prep_create(exp, set);
 718         if (rc)
 719                 lov_fini_create_set(set, lsmp);
 720         else
 721                 *reqset = set;
 722         RETURN(rc);
 723 }
 724
 725 static int common_attr_done(struct lov_request_set *set)
 726 {
 727         struct list_head *pos;
 728         struct lov_request *req;
 729         struct obdo *tmp_oa;
 730         int rc = 0, attrset = 0;
 731         ENTRY;
 732
 733         LASSERT(set->set_oi != NULL);
 734
 735         if (set->set_oi->oi_oa == NULL)
 736                 RETURN(0);
 737
 738         if (!set->set_success)
 739                 RETURN(-EIO);
 740
 741         tmp_oa = obdo_alloc();
 742         if (tmp_oa == NULL)
 743                 GOTO(out, rc = -ENOMEM);
 744
 745         list_for_each (pos, &set->set_list) {
 746                 req = list_entry(pos, struct lov_request, rq_link);
 747
 748                 if (!req->rq_complete || req->rq_rc)
 749                         continue;
 750                 if (req->rq_oi.oi_oa->o_valid == 0)   /* inactive stripe */
 751                         continue;
 752                 lov_merge_attrs(tmp_oa, req->rq_oi.oi_oa,
 753                                 req->rq_oi.oi_oa->o_valid,
 754                                 set->set_oi->oi_md, req->rq_stripe, &attrset);
 755         }
 756         if (!attrset) {
 757                 CERROR("No stripes had valid attrs\n");
 758                 rc = -EIO;
 759         }
 760         tmp_oa->o_id = set->set_oi->oi_oa->o_id;
 761         memcpy(set->set_oi->oi_oa, tmp_oa, sizeof(*set->set_oi->oi_oa));
 762 out:
 763         if (tmp_oa)
 764                 obdo_free(tmp_oa);
 765         RETURN(rc);
 766
 767 }
 768
 769 static int brw_done(struct lov_request_set *set)
 770 {
 771         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 772         struct lov_oinfo     *loi = NULL;
 773         struct list_head *pos;
 774         struct lov_request *req;
 775         ENTRY;
 776
 777         list_for_each (pos, &set->set_list) {
 778                 req = list_entry(pos, struct lov_request, rq_link);
 779
 780                 if (!req->rq_complete || req->rq_rc)
 781                         continue;
 782
 783                 loi = &lsm->lsm_oinfo[req->rq_stripe];
 784
 785                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS)
 786                         loi->loi_lvb.lvb_blocks = req->rq_oi.oi_oa->o_blocks;
 787         }
 788
 789         RETURN(0);
 790 }
 791
 792 int lov_fini_brw_set(struct lov_request_set *set)
 793 {
 794         int rc = 0;
 795         ENTRY;
 796
 797         if (set == NULL)
 798                 RETURN(0);
 799         LASSERT(set->set_exp);
 800         if (set->set_completes) {
 801                 rc = brw_done(set);
 802                 /* FIXME update qos data here */
 803         }
 804         if (atomic_dec_and_test(&set->set_refcount))
 805                 lov_finish_set(set);
 806
 807         RETURN(rc);
 808 }
 809
 810 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
 811                      obd_count oa_bufs, struct brw_page *pga,
 812                      struct obd_trans_info *oti,
 813                      struct lov_request_set **reqset)
 814 {
 815         struct {
 816                 obd_count       index;
 817                 obd_count       count;
 818                 obd_count       off;
 819         } *info = NULL;
 820         struct lov_request_set *set;
 821         struct lov_oinfo *loi = NULL;
 822         struct lov_obd *lov = &exp->exp_obd->u.lov;
 823         int rc = 0, i, shift;
 824         ENTRY;
 825
 826         OBD_ALLOC(set, sizeof(*set));
 827         if (set == NULL)
 828                 RETURN(-ENOMEM);
 829         lov_init_set(set);
 830
 831         set->set_exp = exp;
 832         set->set_oti = oti;
 833         set->set_oi = oinfo;
 834         set->set_oabufs = oa_bufs;
 835         OBD_ALLOC(set->set_pga, oa_bufs * sizeof(*set->set_pga));
 836         if (!set->set_pga)
 837                 GOTO(out, rc = -ENOMEM);
 838
 839         OBD_ALLOC(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 840         if (!info)
 841                 GOTO(out, rc = -ENOMEM);
 842
 843         /* calculate the page count for each stripe */
 844         for (i = 0; i < oa_bufs; i++) {
 845                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 846                 info[stripe].count++;
 847         }
 848
 849         /* alloc and initialize lov request */
 850         shift = 0;
 851         for (i = 0, loi = oinfo->oi_md->lsm_oinfo;
 852              i < oinfo->oi_md->lsm_stripe_count; i++, loi++){
 853                 struct lov_request *req;
 854
 855                 if (info[i].count == 0)
 856                         continue;
 857
 858                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 859                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 860                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 861                         GOTO(out, rc = -EIO);
 862                 }
 863
 864                 OBD_ALLOC(req, sizeof(*req));
 865                 if (req == NULL)
 866                         GOTO(out, rc = -ENOMEM);
 867
 868                 req->rq_oi.oi_oa = obdo_alloc();
 869                 if (req->rq_oi.oi_oa == NULL) {
 870                         OBD_FREE(req, sizeof(*req));
 871                         GOTO(out, rc = -ENOMEM);
 872                 }
 873
 874                 if (oinfo->oi_oa) {
 875                         memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
 876                                sizeof(*req->rq_oi.oi_oa));
 877                 }
 878                 req->rq_oi.oi_oa->o_id = loi->loi_id;
 879                 req->rq_oi.oi_oa->o_stripe_idx = i;
 880
 881                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 882                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 883                 if (req->rq_oi.oi_md == NULL) {
 884                         obdo_free(req->rq_oi.oi_oa);
 885                         OBD_FREE(req, sizeof(*req));
 886                         GOTO(out, rc = -ENOMEM);
 887                 }
 888
 889                 req->rq_idx = loi->loi_ost_idx;
 890                 req->rq_stripe = i;
 891
 892                 /* XXX LOV STACKING */
 893                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 894                 req->rq_oi.oi_md->lsm_object_gr = oinfo->oi_md->lsm_object_gr;
 895                 req->rq_oabufs = info[i].count;
 896                 req->rq_pgaidx = shift;
 897                 shift += req->rq_oabufs;
 898
 899                 /* remember the index for sort brw_page array */
 900                 info[i].index = req->rq_pgaidx;
 901
 902                 lov_set_add_req(req, set);
 903         }
 904         if (!set->set_count)
 905                 GOTO(out, rc = -EIO);
 906
 907         /* rotate & sort the brw_page array */
 908         for (i = 0; i < oa_bufs; i++) {
 909                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 910
 911                 shift = info[stripe].index + info[stripe].off;
 912                 LASSERT(shift < oa_bufs);
 913                 set->set_pga[shift] = pga[i];
 914                 lov_stripe_offset(oinfo->oi_md, pga[i].off, stripe,
 915                                   &set->set_pga[shift].off);
 916                 info[stripe].off++;
 917         }
 918 out:
 919         if (info)
 920                 OBD_FREE(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 921
 922         if (rc == 0)
 923                 *reqset = set;
 924         else
 925                 lov_fini_brw_set(set);
 926
 927         RETURN(rc);
 928 }
 929
 930 int lov_fini_getattr_set(struct lov_request_set *set)
 931 {
 932         int rc = 0;
 933         ENTRY;
 934
 935         if (set == NULL)
 936                 RETURN(0);
 937         LASSERT(set->set_exp);
 938         if (set->set_completes)
 939                 rc = common_attr_done(set);
 940
 941         if (atomic_dec_and_test(&set->set_refcount))
 942                 lov_finish_set(set);
 943
 944         RETURN(rc);
 945 }
 946
 947 /* The callback for osc_getattr_async that finilizes a request info when a
 948  * response is recieved. */
 949 static int cb_getattr_update(struct obd_info *oinfo, int rc)
 950 {
 951         struct lov_request *lovreq;
 952         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 953         return lov_update_common_set(lovreq->rq_rqset, lovreq, rc);
 954 }
 955
 956 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
 957                          struct lov_request_set **reqset)
 958 {
 959         struct lov_request_set *set;
 960         struct lov_oinfo *loi = NULL;
 961         struct lov_obd *lov = &exp->exp_obd->u.lov;
 962         int rc = 0, i;
 963         ENTRY;
 964
 965         OBD_ALLOC(set, sizeof(*set));
 966         if (set == NULL)
 967                 RETURN(-ENOMEM);
 968         lov_init_set(set);
 969
 970         set->set_exp = exp;
 971         set->set_oi = oinfo;
 972
 973         loi = oinfo->oi_md->lsm_oinfo;
 974         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++, loi++) {
 975                 struct lov_request *req;
 976
 977                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 978                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 979                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 980                         continue;
 981                 }
 982
 983                 OBD_ALLOC(req, sizeof(*req));
 984                 if (req == NULL)
 985                         GOTO(out_set, rc = -ENOMEM);
 986
 987                 req->rq_stripe = i;
 988                 req->rq_idx = loi->loi_ost_idx;
 989
 990                 req->rq_oi.oi_oa = obdo_alloc();
 991                 if (req->rq_oi.oi_oa == NULL) {
 992                         OBD_FREE(req, sizeof(*req));
 993                         GOTO(out_set, rc = -ENOMEM);
 994                 }
 995                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
 996                        sizeof(*req->rq_oi.oi_oa));
 997                 req->rq_oi.oi_oa->o_id = loi->loi_id;
 998                 req->rq_oi.oi_cb_up = cb_getattr_update;
 999
1000                 lov_set_add_req(req, set);
1001         }
1002         if (!set->set_count)
1003                 GOTO(out_set, rc = -EIO);
1004         *reqset = set;
1005         RETURN(rc);
1006 out_set:
1007         lov_fini_getattr_set(set);
1008         RETURN(rc);
1009 }
1010
1011 int lov_fini_destroy_set(struct lov_request_set *set)
1012 {
1013         ENTRY;
1014
1015         if (set == NULL)
1016                 RETURN(0);
1017         LASSERT(set->set_exp);
1018         if (set->set_completes) {
1019                 /* FIXME update qos data here */
1020         }
1021
1022         if (atomic_dec_and_test(&set->set_refcount))
1023                 lov_finish_set(set);
1024
1025         RETURN(0);
1026 }
1027
1028 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
1029                          struct obdo *src_oa, struct lov_stripe_md *lsm,
1030                          struct obd_trans_info *oti,
1031                          struct lov_request_set **reqset)
1032 {
1033         struct lov_request_set *set;
1034         struct lov_oinfo *loi = NULL;
1035         struct lov_obd *lov = &exp->exp_obd->u.lov;
1036         int rc = 0, i;
1037         ENTRY;
1038
1039         OBD_ALLOC(set, sizeof(*set));
1040         if (set == NULL)
1041                 RETURN(-ENOMEM);
1042         lov_init_set(set);
1043
1044         set->set_exp = exp;
1045         set->set_oi = oinfo;
1046         set->set_oi->oi_md = lsm;
1047         set->set_oi->oi_oa = src_oa;
1048         set->set_oti = oti;
1049         if (oti != NULL && src_oa->o_valid & OBD_MD_FLCOOKIE)
1050                 set->set_cookies = oti->oti_logcookies;
1051
1052         loi = lsm->lsm_oinfo;
1053         for (i = 0; i < lsm->lsm_stripe_count; i++, loi++) {
1054                 struct lov_request *req;
1055
1056                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1057                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1058                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1059                         continue;
1060                 }
1061
1062                 OBD_ALLOC(req, sizeof(*req));
1063                 if (req == NULL)
1064                         GOTO(out_set, rc = -ENOMEM);
1065
1066                 req->rq_stripe = i;
1067                 req->rq_idx = loi->loi_ost_idx;
1068
1069                 req->rq_oi.oi_oa = obdo_alloc();
1070                 if (req->rq_oi.oi_oa == NULL) {
1071                         OBD_FREE(req, sizeof(*req));
1072                         GOTO(out_set, rc = -ENOMEM);
1073                 }
1074                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1075                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1076                 lov_set_add_req(req, set);
1077         }
1078         if (!set->set_count)
1079                 GOTO(out_set, rc = -EIO);
1080         *reqset = set;
1081         RETURN(rc);
1082 out_set:
1083         lov_fini_destroy_set(set);
1084         RETURN(rc);
1085 }
1086
1087 int lov_fini_setattr_set(struct lov_request_set *set)
1088 {
1089         int rc = 0;
1090         ENTRY;
1091
1092         if (set == NULL)
1093                 RETURN(0);
1094         LASSERT(set->set_exp);
1095         if (set->set_completes) {
1096                 rc = common_attr_done(set);
1097                 /* FIXME update qos data here */
1098         }
1099
1100         if (atomic_dec_and_test(&set->set_refcount))
1101                 lov_finish_set(set);
1102         RETURN(rc);
1103 }
1104
1105 int lov_update_setattr_set(struct lov_request_set *set,
1106                            struct lov_request *req, int rc)
1107 {
1108         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1109         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1110         ENTRY;
1111
1112         lov_update_set(set, req, rc);
1113
1114         /* grace error on inactive ost */
1115         if (rc && !(lov->lov_tgts[req->rq_idx] &&
1116                     lov->lov_tgts[req->rq_idx]->ltd_active))
1117                 rc = 0;
1118
1119         if (rc == 0) {
1120                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCTIME)
1121                         lsm->lsm_oinfo[req->rq_stripe].loi_lvb.lvb_ctime =
1122                                 req->rq_oi.oi_oa->o_ctime;
1123                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLMTIME)
1124                         lsm->lsm_oinfo[req->rq_stripe].loi_lvb.lvb_mtime =
1125                                 req->rq_oi.oi_oa->o_mtime;
1126                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLATIME)
1127                         lsm->lsm_oinfo[req->rq_stripe].loi_lvb.lvb_atime =
1128                                 req->rq_oi.oi_oa->o_atime;
1129         }
1130
1131         RETURN(rc);
1132 }
1133
1134 /* The callback for osc_setattr_async that finilizes a request info when a
1135  * response is recieved. */
1136 static int cb_setattr_update(struct obd_info *oinfo, int rc)
1137 {
1138         struct lov_request *lovreq;
1139         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1140         return lov_update_setattr_set(lovreq->rq_rqset, lovreq, rc);
1141 }
1142
1143 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
1144                          struct obd_trans_info *oti,
1145                          struct lov_request_set **reqset)
1146 {
1147         struct lov_request_set *set;
1148         struct lov_oinfo *loi = NULL;
1149         struct lov_obd *lov = &exp->exp_obd->u.lov;
1150         int rc = 0, i;
1151         ENTRY;
1152
1153         OBD_ALLOC(set, sizeof(*set));
1154         if (set == NULL)
1155                 RETURN(-ENOMEM);
1156         lov_init_set(set);
1157
1158         set->set_exp = exp;
1159         set->set_oti = oti;
1160         set->set_oi = oinfo;
1161         if (oti != NULL && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
1162                 set->set_cookies = oti->oti_logcookies;
1163
1164         loi = oinfo->oi_md->lsm_oinfo;
1165         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++, loi++) {
1166                 struct lov_request *req;
1167
1168                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1169                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1170                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1171                         continue;
1172                 }
1173
1174                 OBD_ALLOC(req, sizeof(*req));
1175                 if (req == NULL)
1176                         GOTO(out_set, rc = -ENOMEM);
1177                 req->rq_stripe = i;
1178                 req->rq_idx = loi->loi_ost_idx;
1179
1180                 req->rq_oi.oi_oa = obdo_alloc();
1181                 if (req->rq_oi.oi_oa == NULL) {
1182                         OBD_FREE(req, sizeof(*req));
1183                         GOTO(out_set, rc = -ENOMEM);
1184                 }
1185                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1186                        sizeof(*req->rq_oi.oi_oa));
1187                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1188                 req->rq_oi.oi_oa->o_stripe_idx = i;
1189                 req->rq_oi.oi_cb_up = cb_setattr_update;
1190                 req->rq_rqset = set;
1191
1192                 if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE) {
1193                         int off = lov_stripe_offset(oinfo->oi_md,
1194                                                     oinfo->oi_oa->o_size, i,
1195                                                     &req->rq_oi.oi_oa->o_size);
1196
1197                         if (off < 0 && req->rq_oi.oi_oa->o_size)
1198                                 req->rq_oi.oi_oa->o_size--;
1199
1200                         CDEBUG(D_INODE, "stripe %d has size "LPU64"/"LPU64"\n",
1201                                i, req->rq_oi.oi_oa->o_size,
1202                                oinfo->oi_oa->o_size);
1203                 }
1204                 lov_set_add_req(req, set);
1205         }
1206         if (!set->set_count)
1207                 GOTO(out_set, rc = -EIO);
1208         *reqset = set;
1209         RETURN(rc);
1210 out_set:
1211         lov_fini_setattr_set(set);
1212         RETURN(rc);
1213 }
1214
1215 int lov_fini_punch_set(struct lov_request_set *set)
1216 {
1217         int rc = 0;
1218         ENTRY;
1219
1220         if (set == NULL)
1221                 RETURN(0);
1222         LASSERT(set->set_exp);
1223         if (set->set_completes) {
1224                 rc = -EIO;
1225                 /* FIXME update qos data here */
1226                 if (set->set_success)
1227                         rc = common_attr_done(set);
1228         }
1229
1230         if (atomic_dec_and_test(&set->set_refcount))
1231                 lov_finish_set(set);
1232
1233         RETURN(rc);
1234 }
1235
1236 int lov_update_punch_set(struct lov_request_set *set,
1237                            struct lov_request *req, int rc)
1238 {
1239         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1240         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1241         ENTRY;
1242
1243         lov_update_set(set, req, rc);
1244
1245         /* grace error on inactive ost */
1246         if (rc && !lov->lov_tgts[req->rq_idx]->ltd_active)
1247                 rc = 0;
1248
1249         if (rc == 0) {
1250                 lov_stripe_lock(lsm);
1251                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS) {
1252                         lsm->lsm_oinfo[req->rq_stripe].loi_lvb.lvb_blocks =
1253                                 req->rq_oi.oi_oa->o_blocks;
1254                 }
1255
1256                 /* Do we need to update lvb_size here? It needn't because
1257                  * it have been done in ll_truncate(). -jay */
1258                 lov_stripe_unlock(lsm);
1259         }
1260
1261         RETURN(rc);
1262 }
1263
1264 /* The callback for osc_punch that finilizes a request info when a response
1265  * is recieved. */
1266 static int cb_update_punch(struct obd_info *oinfo, int rc)
1267 {
1268         struct lov_request *lovreq;
1269         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1270         return lov_update_punch_set(lovreq->rq_rqset, lovreq, rc);
1271 }
1272
1273 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
1274                        struct obd_trans_info *oti,
1275                        struct lov_request_set **reqset)
1276 {
1277         struct lov_request_set *set;
1278         struct lov_oinfo *loi = NULL;
1279         struct lov_obd *lov = &exp->exp_obd->u.lov;
1280         int rc = 0, i;
1281         ENTRY;
1282
1283         OBD_ALLOC(set, sizeof(*set));
1284         if (set == NULL)
1285                 RETURN(-ENOMEM);
1286         lov_init_set(set);
1287
1288         set->set_oi = oinfo;
1289         set->set_exp = exp;
1290
1291         loi = oinfo->oi_md->lsm_oinfo;
1292         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++, loi++) {
1293                 struct lov_request *req;
1294                 obd_off rs, re;
1295
1296                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1297                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1298                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1299                         continue;
1300                 }
1301
1302                 if (!lov_stripe_intersects(oinfo->oi_md, i,
1303                                            oinfo->oi_policy.l_extent.start,
1304                                            oinfo->oi_policy.l_extent.end,
1305                                            &rs, &re))
1306                         continue;
1307
1308                 OBD_ALLOC(req, sizeof(*req));
1309                 if (req == NULL)
1310                         GOTO(out_set, rc = -ENOMEM);
1311                 req->rq_stripe = i;
1312                 req->rq_idx = loi->loi_ost_idx;
1313
1314                 req->rq_oi.oi_oa = obdo_alloc();
1315                 if (req->rq_oi.oi_oa == NULL) {
1316                         OBD_FREE(req, sizeof(*req));
1317                         GOTO(out_set, rc = -ENOMEM);
1318                 }
1319                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1320                        sizeof(*req->rq_oi.oi_oa));
1321                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1322                 req->rq_oi.oi_oa->o_stripe_idx = i;
1323                 req->rq_oi.oi_cb_up = cb_update_punch;
1324                 req->rq_rqset = set;
1325
1326                 req->rq_oi.oi_policy.l_extent.start = rs;
1327                 req->rq_oi.oi_policy.l_extent.end = re;
1328                 req->rq_oi.oi_policy.l_extent.gid = -1;
1329
1330                 lov_set_add_req(req, set);
1331         }
1332         if (!set->set_count)
1333                 GOTO(out_set, rc = -EIO);
1334         *reqset = set;
1335         RETURN(rc);
1336 out_set:
1337         lov_fini_punch_set(set);
1338         RETURN(rc);
1339 }
1340
1341 int lov_fini_sync_set(struct lov_request_set *set)
1342 {
1343         int rc = 0;
1344         ENTRY;
1345
1346         if (set == NULL)
1347                 RETURN(0);
1348         LASSERT(set->set_exp);
1349         if (set->set_completes) {
1350                 if (!set->set_success)
1351                         rc = -EIO;
1352                 /* FIXME update qos data here */
1353         }
1354
1355         if (atomic_dec_and_test(&set->set_refcount))
1356                 lov_finish_set(set);
1357
1358         RETURN(rc);
1359 }
1360
1361 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *oinfo,
1362                       struct obdo *src_oa, struct lov_stripe_md *lsm,
1363                       obd_off start, obd_off end,
1364                       struct lov_request_set **reqset)
1365 {
1366         struct lov_request_set *set;
1367         struct lov_oinfo *loi = NULL;
1368         struct lov_obd *lov = &exp->exp_obd->u.lov;
1369         int rc = 0, i;
1370         ENTRY;
1371
1372         OBD_ALLOC(set, sizeof(*set));
1373         if (set == NULL)
1374                 RETURN(-ENOMEM);
1375         lov_init_set(set);
1376
1377         set->set_exp = exp;
1378         set->set_oi = oinfo;
1379         set->set_oi->oi_md = lsm;
1380         set->set_oi->oi_oa = src_oa;
1381
1382         loi = lsm->lsm_oinfo;
1383         for (i = 0; i < lsm->lsm_stripe_count; i++, loi++) {
1384                 struct lov_request *req;
1385                 obd_off rs, re;
1386
1387                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1388                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1389                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1390                         continue;
1391                 }
1392
1393                 if (!lov_stripe_intersects(lsm, i, start, end, &rs, &re))
1394                         continue;
1395
1396                 OBD_ALLOC(req, sizeof(*req));
1397                 if (req == NULL)
1398                         GOTO(out_set, rc = -ENOMEM);
1399                 req->rq_stripe = i;
1400                 req->rq_idx = loi->loi_ost_idx;
1401
1402                 req->rq_oi.oi_oa = obdo_alloc();
1403                 if (req->rq_oi.oi_oa == NULL) {
1404                         OBD_FREE(req, sizeof(*req));
1405                         GOTO(out_set, rc = -ENOMEM);
1406                 }
1407                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1408                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1409                 req->rq_oi.oi_oa->o_stripe_idx = i;
1410
1411                 req->rq_oi.oi_policy.l_extent.start = rs;
1412                 req->rq_oi.oi_policy.l_extent.end = re;
1413                 req->rq_oi.oi_policy.l_extent.gid = -1;
1414
1415                 lov_set_add_req(req, set);
1416         }
1417         if (!set->set_count)
1418                 GOTO(out_set, rc = -EIO);
1419         *reqset = set;
1420         RETURN(rc);
1421 out_set:
1422         lov_fini_sync_set(set);
1423         RETURN(rc);
1424 }
1425
1426 #define LOV_U64_MAX ((__u64)~0ULL)
1427 #define LOV_SUM_MAX(tot, add)                                           \
1428         do {                                                            \
1429                 if ((tot) + (add) < (tot))                              \
1430                         (tot) = LOV_U64_MAX;                            \
1431                 else                                                    \
1432                         (tot) += (add);                                 \
1433         } while(0)
1434
1435 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,int success)
1436 {
1437         ENTRY;
1438
1439         if (success) {
1440                 __u32 expected_stripes = lov_get_stripecnt(&obd->u.lov, 0);
1441
1442                 if (osfs->os_files != LOV_U64_MAX)
1443                         do_div(osfs->os_files, expected_stripes);
1444                 if (osfs->os_ffree != LOV_U64_MAX)
1445                         do_div(osfs->os_ffree, expected_stripes);
1446
1447                 spin_lock(&obd->obd_osfs_lock);
1448                 memcpy(&obd->obd_osfs, osfs, sizeof(*osfs));
1449                 obd->obd_osfs_age = get_jiffies_64();
1450                 spin_unlock(&obd->obd_osfs_lock);
1451                 RETURN(0);
1452         }
1453
1454         RETURN(-EIO);
1455 }
1456
1457 int lov_fini_statfs_set(struct lov_request_set *set)
1458 {
1459         int rc = 0;
1460         ENTRY;
1461
1462         if (set == NULL)
1463                 RETURN(0);
1464
1465         if (set->set_completes) {
1466                 rc = lov_fini_statfs(set->set_obd, set->set_oi->oi_osfs,
1467                                      set->set_success);
1468         }
1469
1470         if (atomic_dec_and_test(&set->set_refcount))
1471                 lov_finish_set(set);
1472
1473         RETURN(rc);
1474 }
1475
1476 void lov_update_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1477                        struct obd_statfs *lov_sfs, int success)
1478 {
1479         spin_lock(&obd->obd_osfs_lock);
1480         memcpy(&obd->obd_osfs, lov_sfs, sizeof(*lov_sfs));
1481         obd->obd_osfs_age = get_jiffies_64();
1482         spin_unlock(&obd->obd_osfs_lock);
1483
1484         if (success == 0) {
1485                 memcpy(osfs, lov_sfs, sizeof(*lov_sfs));
1486         } else {
1487 #ifdef MIN_DF
1488                 /* Sandia requested that df (and so, statfs) only
1489                    returned minimal available space on
1490                    a single OST, so people would be able to
1491                    write this much data guaranteed. */
1492                 if (osfs->os_bavail > lov_sfs->os_bavail) {
1493                         /* Presumably if new bavail is smaller,
1494                            new bfree is bigger as well */
1495                         osfs->os_bfree = lov_sfs->os_bfree;
1496                         osfs->os_bavail = lov_sfs->os_bavail;
1497                 }
1498 #else
1499                 osfs->os_bfree += lov_sfs->os_bfree;
1500                 osfs->os_bavail += lov_sfs->os_bavail;
1501 #endif
1502                 osfs->os_blocks += lov_sfs->os_blocks;
1503                 /* XXX not sure about this one - depends on policy.
1504                  *   - could be minimum if we always stripe on all OBDs
1505                  *     (but that would be wrong for any other policy,
1506                  *     if one of the OBDs has no more objects left)
1507                  *   - could be sum if we stripe whole objects
1508                  *   - could be average, just to give a nice number
1509                  *
1510                  * To give a "reasonable" (if not wholly accurate)
1511                  * number, we divide the total number of free objects
1512                  * by expected stripe count (watch out for overflow).
1513                  */
1514                 LOV_SUM_MAX(osfs->os_files, lov_sfs->os_files);
1515                 LOV_SUM_MAX(osfs->os_ffree, lov_sfs->os_ffree);
1516         }
1517 }
1518
1519 /* The callback for osc_statfs_async that finilizes a request info when a
1520  * response is recieved. */
1521 static int cb_statfs_update(struct obd_info *oinfo, int rc)
1522 {
1523         struct lov_request *lovreq;
1524         struct obd_statfs *osfs, *lov_sfs;
1525         struct obd_device *obd;
1526         struct lov_obd *lov;
1527         int success;
1528         ENTRY;
1529
1530         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1531         lov = &lovreq->rq_rqset->set_obd->u.lov;
1532         obd = class_exp2obd(lov->lov_tgts[lovreq->rq_idx]->ltd_exp);
1533
1534         osfs = lovreq->rq_rqset->set_oi->oi_osfs;
1535         lov_sfs = oinfo->oi_osfs;
1536
1537         success = lovreq->rq_rqset->set_success;
1538
1539         /* XXX: the same is done in lov_update_common_set, however
1540            lovset->set_exp is not initialized. */
1541         lov_update_set(lovreq->rq_rqset, lovreq, rc);
1542         if (rc) {
1543                 if (rc && !(lov->lov_tgts[lovreq->rq_idx] &&
1544                             lov->lov_tgts[lovreq->rq_idx]->ltd_active))
1545                         rc = 0;
1546                 RETURN(rc);
1547         }
1548
1549         lov_update_statfs(obd, osfs, lov_sfs, success);
1550         qos_update(lov);
1551
1552         RETURN(0);
1553 }
1554
1555 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
1556                         struct lov_request_set **reqset)
1557 {
1558         struct lov_request_set *set;
1559         struct lov_obd *lov = &obd->u.lov;
1560         int rc = 0, i;
1561         ENTRY;
1562
1563         OBD_ALLOC(set, sizeof(*set));
1564         if (set == NULL)
1565                 RETURN(-ENOMEM);
1566         lov_init_set(set);
1567
1568         set->set_obd = obd;
1569         set->set_oi = oinfo;
1570
1571         /* We only get block data from the OBD */
1572         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
1573                 struct lov_request *req;
1574
1575                 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) {
1576                         CDEBUG(D_HA, "lov idx %d inactive\n", i);
1577                         continue;
1578                 }
1579
1580                 OBD_ALLOC(req, sizeof(*req));
1581                 if (req == NULL)
1582                         GOTO(out_set, rc = -ENOMEM);
1583
1584                 OBD_ALLOC(req->rq_oi.oi_osfs, sizeof(*req->rq_oi.oi_osfs));
1585                 if (req->rq_oi.oi_osfs == NULL) {
1586                         OBD_FREE(req, sizeof(*req));
1587                         GOTO(out_set, rc = -ENOMEM);
1588                 }
1589
1590                 req->rq_idx = i;
1591                 req->rq_oi.oi_cb_up = cb_statfs_update;
1592                 req->rq_rqset = set;
1593
1594                 lov_set_add_req(req, set);
1595         }
1596         if (!set->set_count)
1597                 GOTO(out_set, rc = -EIO);
1598         *reqset = set;
1599         RETURN(rc);
1600 out_set:
1601         lov_fini_statfs_set(set);
1602         RETURN(rc);
1603 }