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  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #ifndef EXPORT_SYMTAB
  38 # define EXPORT_SYMTAB
  39 #endif
  40 #define DEBUG_SUBSYSTEM S_LOV
  41
  42 #ifdef __KERNEL__
  43 #include <libcfs/libcfs.h>
  44 #else
  45 #include <liblustre.h>
  46 #endif
  47
  48 #include <obd_class.h>
  49 #include <obd_lov.h>
  50 #include <lustre/lustre_idl.h>
  51
  52 #include "lov_internal.h"
  53
  54 static void lov_init_set(struct lov_request_set *set)
  55 {
  56         set->set_count = 0;
  57         set->set_completes = 0;
  58         set->set_success = 0;
  59         set->set_cookies = 0;
  60         CFS_INIT_LIST_HEAD(&set->set_list);
  61         atomic_set(&set->set_refcount, 1);
  62         cfs_waitq_init(&set->set_waitq);
  63         spin_lock_init(&set->set_lock);
  64 }
  65
  66 void lov_finish_set(struct lov_request_set *set)
  67 {
  68         struct list_head *pos, *n;
  69         ENTRY;
  70
  71         LASSERT(set);
  72         list_for_each_safe(pos, n, &set->set_list) {
  73                 struct lov_request *req = list_entry(pos, struct lov_request,
  74                                                      rq_link);
  75                 list_del_init(&req->rq_link);
  76
  77                 if (req->rq_oi.oi_oa)
  78                         OBDO_FREE(req->rq_oi.oi_oa);
  79                 if (req->rq_oi.oi_md)
  80                         OBD_FREE(req->rq_oi.oi_md, req->rq_buflen);
  81                 if (req->rq_oi.oi_osfs)
  82                         OBD_FREE(req->rq_oi.oi_osfs,
  83                                  sizeof(*req->rq_oi.oi_osfs));
  84                 OBD_FREE(req, sizeof(*req));
  85         }
  86
  87         if (set->set_pga) {
  88                 int len = set->set_oabufs * sizeof(*set->set_pga);
  89                 OBD_FREE(set->set_pga, len);
  90         }
  91         if (set->set_lockh)
  92                 lov_llh_put(set->set_lockh);
  93
  94         OBD_FREE(set, sizeof(*set));
  95         EXIT;
  96 }
  97
  98 int lov_finished_set(struct lov_request_set *set)
  99 {
 100         CDEBUG(D_INFO, "check set %d/%d\n", set->set_completes,
 101                set->set_count);
 102         return set->set_completes == set->set_count;
 103 }
 104
 105
 106 void lov_update_set(struct lov_request_set *set,
 107                     struct lov_request *req, int rc)
 108 {
 109         req->rq_complete = 1;
 110         req->rq_rc = rc;
 111
 112         set->set_completes++;
 113         if (rc == 0)
 114                 set->set_success++;
 115
 116         cfs_waitq_signal(&set->set_waitq);
 117 }
 118
 119 int lov_update_common_set(struct lov_request_set *set,
 120                           struct lov_request *req, int rc)
 121 {
 122         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 123         ENTRY;
 124
 125         lov_update_set(set, req, rc);
 126
 127         /* grace error on inactive ost */
 128         if (rc && !(lov->lov_tgts[req->rq_idx] &&
 129                     lov->lov_tgts[req->rq_idx]->ltd_active))
 130                 rc = 0;
 131
 132         /* FIXME in raid1 regime, should return 0 */
 133         RETURN(rc);
 134 }
 135
 136 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set)
 137 {
 138         list_add_tail(&req->rq_link, &set->set_list);
 139         set->set_count++;
 140         req->rq_rqset = set;
 141 }
 142
 143 extern void osc_update_enqueue(struct lustre_handle *lov_lockhp,
 144                                struct lov_oinfo *loi, int flags,
 145                                struct ost_lvb *lvb, __u32 mode, int rc);
 146
 147 static int lov_update_enqueue_lov(struct obd_export *exp,
 148                                   struct lustre_handle *lov_lockhp,
 149                                   struct lov_oinfo *loi, int flags, int idx,
 150                                   __u64 oid, int rc)
 151 {
 152         struct lov_obd *lov = &exp->exp_obd->u.lov;
 153
 154         if (rc != ELDLM_OK &&
 155             !(rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT))) {
 156                 memset(lov_lockhp, 0, sizeof(*lov_lockhp));
 157                 if (lov->lov_tgts[idx] && lov->lov_tgts[idx]->ltd_active) {
 158                         /* -EUSERS used by OST to report file contention */
 159                         if (rc != -EINTR && rc != -EUSERS)
 160                                 CERROR("enqueue objid "LPX64" subobj "
 161                                        LPX64" on OST idx %d: rc %d\n",
 162                                        oid, loi->loi_id, loi->loi_ost_idx, rc);
 163                 } else
 164                         rc = ELDLM_OK;
 165         }
 166         return rc;
 167 }
 168
 169 int lov_update_enqueue_set(struct lov_request *req, __u32 mode, int rc)
 170 {
 171         struct lov_request_set *set = req->rq_rqset;
 172         struct lustre_handle *lov_lockhp;
 173         struct obd_info *oi = set->set_oi;
 174         struct lov_oinfo *loi;
 175         ENTRY;
 176
 177         LASSERT(oi != NULL);
 178
 179         lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
 180         loi = oi->oi_md->lsm_oinfo[req->rq_stripe];
 181
 182         /* XXX LOV STACKING: OSC gets a copy, created in lov_prep_enqueue_set
 183          * and that copy can be arbitrarily out of date.
 184          *
 185          * The LOV API is due for a serious rewriting anyways, and this
 186          * can be addressed then. */
 187
 188         lov_stripe_lock(oi->oi_md);
 189         osc_update_enqueue(lov_lockhp, loi, oi->oi_flags,
 190                            &req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb, mode, rc);
 191         if (rc == ELDLM_LOCK_ABORTED && (oi->oi_flags & LDLM_FL_HAS_INTENT))
 192                 memset(lov_lockhp, 0, sizeof *lov_lockhp);
 193         rc = lov_update_enqueue_lov(set->set_exp, lov_lockhp, loi, oi->oi_flags,
 194                                     req->rq_idx, oi->oi_md->lsm_object_id, rc);
 195         lov_stripe_unlock(oi->oi_md);
 196         lov_update_set(set, req, rc);
 197         RETURN(rc);
 198 }
 199
 200 /* The callback for osc_enqueue that updates lov info for every OSC request. */
 201 static int cb_update_enqueue(void *cookie, int rc)
 202 {
 203         struct obd_info *oinfo = cookie;
 204         struct ldlm_enqueue_info *einfo;
 205         struct lov_request *lovreq;
 206
 207         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 208         einfo = lovreq->rq_rqset->set_ei;
 209         return lov_update_enqueue_set(lovreq, einfo->ei_mode, rc);
 210 }
 211
 212 static int enqueue_done(struct lov_request_set *set, __u32 mode)
 213 {
 214         struct lov_request *req;
 215         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 216         int rc = 0;
 217         ENTRY;
 218
 219         /* enqueue/match success, just return */
 220         if (set->set_completes && set->set_completes == set->set_success)
 221                 RETURN(0);
 222
 223         /* cancel enqueued/matched locks */
 224         list_for_each_entry(req, &set->set_list, rq_link) {
 225                 struct lustre_handle *lov_lockhp;
 226
 227                 if (!req->rq_complete || req->rq_rc)
 228                         continue;
 229
 230                 lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
 231                 LASSERT(lov_lockhp);
 232                 if (!lustre_handle_is_used(lov_lockhp))
 233                         continue;
 234
 235                 rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp,
 236                                 req->rq_oi.oi_md, mode, lov_lockhp);
 237                 if (rc && lov->lov_tgts[req->rq_idx] &&
 238                     lov->lov_tgts[req->rq_idx]->ltd_active)
 239                         CERROR("cancelling obdjid "LPX64" on OST "
 240                                "idx %d error: rc = %d\n",
 241                                req->rq_oi.oi_md->lsm_object_id,
 242                                req->rq_idx, rc);
 243         }
 244         if (set->set_lockh)
 245                 lov_llh_put(set->set_lockh);
 246         RETURN(rc);
 247 }
 248
 249 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
 250                          struct ptlrpc_request_set *rqset)
 251 {
 252         int ret = 0;
 253         ENTRY;
 254
 255         if (set == NULL)
 256                 RETURN(0);
 257         LASSERT(set->set_exp);
 258         /* Do enqueue_done only for sync requests and if any request
 259          * succeeded. */
 260         if (!rqset) {
 261                 if (rc)
 262                         set->set_completes = 0;
 263                 ret = enqueue_done(set, mode);
 264         } else if (set->set_lockh)
 265                 lov_llh_put(set->set_lockh);
 266
 267         lov_put_reqset(set);
 268
 269         RETURN(rc ? rc : ret);
 270 }
 271
 272 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
 273                          struct ldlm_enqueue_info *einfo,
 274                          struct lov_request_set **reqset)
 275 {
 276         struct lov_obd *lov = &exp->exp_obd->u.lov;
 277         struct lov_request_set *set;
 278         int i, rc = 0;
 279         ENTRY;
 280
 281         OBD_ALLOC(set, sizeof(*set));
 282         if (set == NULL)
 283                 RETURN(-ENOMEM);
 284         lov_init_set(set);
 285
 286         set->set_exp = exp;
 287         set->set_oi = oinfo;
 288         set->set_ei = einfo;
 289         set->set_lockh = lov_llh_new(oinfo->oi_md);
 290         if (set->set_lockh == NULL)
 291                 GOTO(out_set, rc = -ENOMEM);
 292         oinfo->oi_lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 293
 294         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
 295                 struct lov_oinfo *loi;
 296                 struct lov_request *req;
 297                 obd_off start, end;
 298
 299                 loi = oinfo->oi_md->lsm_oinfo[i];
 300                 if (!lov_stripe_intersects(oinfo->oi_md, i,
 301                                            oinfo->oi_policy.l_extent.start,
 302                                            oinfo->oi_policy.l_extent.end,
 303                                            &start, &end))
 304                         continue;
 305
 306                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 307                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 308                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 309                         continue;
 310                 }
 311
 312                 OBD_ALLOC(req, sizeof(*req));
 313                 if (req == NULL)
 314                         GOTO(out_set, rc = -ENOMEM);
 315
 316                 req->rq_buflen = sizeof(*req->rq_oi.oi_md) +
 317                         sizeof(struct lov_oinfo *) +
 318                         sizeof(struct lov_oinfo);
 319                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 320                 if (req->rq_oi.oi_md == NULL) {
 321                         OBD_FREE(req, sizeof(*req));
 322                         GOTO(out_set, rc = -ENOMEM);
 323                 }
 324                 req->rq_oi.oi_md->lsm_oinfo[0] =
 325                         ((void *)req->rq_oi.oi_md) + sizeof(*req->rq_oi.oi_md) +
 326                         sizeof(struct lov_oinfo *);
 327
 328                 /* Set lov request specific parameters. */
 329                 req->rq_oi.oi_lockh = set->set_lockh->llh_handles + i;
 330                 req->rq_oi.oi_cb_up = cb_update_enqueue;
 331                 req->rq_oi.oi_flags = oinfo->oi_flags;
 332
 333                 LASSERT(req->rq_oi.oi_lockh);
 334
 335                 req->rq_oi.oi_policy.l_extent.gid =
 336                         oinfo->oi_policy.l_extent.gid;
 337                 req->rq_oi.oi_policy.l_extent.start = start;
 338                 req->rq_oi.oi_policy.l_extent.end = end;
 339
 340                 req->rq_idx = loi->loi_ost_idx;
 341                 req->rq_stripe = i;
 342
 343                 /* XXX LOV STACKING: submd should be from the subobj */
 344                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 345                 req->rq_oi.oi_md->lsm_object_gr = oinfo->oi_md->lsm_object_gr;
 346                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 347                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_kms_valid =
 348                         loi->loi_kms_valid;
 349                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_kms = loi->loi_kms;
 350                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb = loi->loi_lvb;
 351
 352                 lov_set_add_req(req, set);
 353         }
 354         if (!set->set_count)
 355                 GOTO(out_set, rc = -EIO);
 356         *reqset = set;
 357         RETURN(0);
 358 out_set:
 359         lov_fini_enqueue_set(set, einfo->ei_mode, rc, NULL);
 360         RETURN(rc);
 361 }
 362
 363 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
 364                          int rc)
 365 {
 366         int ret = rc;
 367         ENTRY;
 368
 369         if (rc > 0)
 370                 ret = 0;
 371         else if (rc == 0)
 372                 ret = 1;
 373         lov_update_set(set, req, ret);
 374         RETURN(rc);
 375 }
 376
 377 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags)
 378 {
 379         int rc = 0;
 380         ENTRY;
 381
 382         if (set == NULL)
 383                 RETURN(0);
 384         LASSERT(set->set_exp);
 385         rc = enqueue_done(set, mode);
 386         if ((set->set_count == set->set_success) &&
 387             (flags & LDLM_FL_TEST_LOCK))
 388                 lov_llh_put(set->set_lockh);
 389
 390         lov_put_reqset(set);
 391
 392         RETURN(rc);
 393 }
 394
 395 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
 396                        struct lov_stripe_md *lsm, ldlm_policy_data_t *policy,
 397                        __u32 mode, struct lustre_handle *lockh,
 398                        struct lov_request_set **reqset)
 399 {
 400         struct lov_obd *lov = &exp->exp_obd->u.lov;
 401         struct lov_request_set *set;
 402         int i, rc = 0;
 403         ENTRY;
 404
 405         OBD_ALLOC(set, sizeof(*set));
 406         if (set == NULL)
 407                 RETURN(-ENOMEM);
 408         lov_init_set(set);
 409
 410         set->set_exp = exp;
 411         set->set_oi = oinfo;
 412         set->set_oi->oi_md = lsm;
 413         set->set_lockh = lov_llh_new(lsm);
 414         if (set->set_lockh == NULL)
 415                 GOTO(out_set, rc = -ENOMEM);
 416         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 417
 418         for (i = 0; i < lsm->lsm_stripe_count; i++){
 419                 struct lov_oinfo *loi;
 420                 struct lov_request *req;
 421                 obd_off start, end;
 422
 423                 loi = lsm->lsm_oinfo[i];
 424                 if (!lov_stripe_intersects(lsm, i, policy->l_extent.start,
 425                                            policy->l_extent.end, &start, &end))
 426                         continue;
 427
 428                 /* FIXME raid1 should grace this error */
 429                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 430                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 431                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 432                         GOTO(out_set, rc = -EIO);
 433                 }
 434
 435                 OBD_ALLOC(req, sizeof(*req));
 436                 if (req == NULL)
 437                         GOTO(out_set, rc = -ENOMEM);
 438
 439                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 440                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 441                 if (req->rq_oi.oi_md == NULL) {
 442                         OBD_FREE(req, sizeof(*req));
 443                         GOTO(out_set, rc = -ENOMEM);
 444                 }
 445
 446                 req->rq_oi.oi_policy.l_extent.start = start;
 447                 req->rq_oi.oi_policy.l_extent.end = end;
 448                 req->rq_oi.oi_policy.l_extent.gid = policy->l_extent.gid;
 449
 450                 req->rq_idx = loi->loi_ost_idx;
 451                 req->rq_stripe = i;
 452
 453                 /* XXX LOV STACKING: submd should be from the subobj */
 454                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 455                 req->rq_oi.oi_md->lsm_object_gr = lsm->lsm_object_gr;
 456                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 457
 458                 lov_set_add_req(req, set);
 459         }
 460         if (!set->set_count)
 461                 GOTO(out_set, rc = -EIO);
 462         *reqset = set;
 463         RETURN(rc);
 464 out_set:
 465         lov_fini_match_set(set, mode, 0);
 466         RETURN(rc);
 467 }
 468
 469 int lov_fini_cancel_set(struct lov_request_set *set)
 470 {
 471         int rc = 0;
 472         ENTRY;
 473
 474         if (set == NULL)
 475                 RETURN(0);
 476
 477         LASSERT(set->set_exp);
 478         if (set->set_lockh)
 479                 lov_llh_put(set->set_lockh);
 480
 481         lov_put_reqset(set);
 482
 483         RETURN(rc);
 484 }
 485
 486 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
 487                         struct lov_stripe_md *lsm, __u32 mode,
 488                         struct lustre_handle *lockh,
 489                         struct lov_request_set **reqset)
 490 {
 491         struct lov_request_set *set;
 492         int i, rc = 0;
 493         ENTRY;
 494
 495         OBD_ALLOC(set, sizeof(*set));
 496         if (set == NULL)
 497                 RETURN(-ENOMEM);
 498         lov_init_set(set);
 499
 500         set->set_exp = exp;
 501         set->set_oi = oinfo;
 502         set->set_oi->oi_md = lsm;
 503         set->set_lockh = lov_handle2llh(lockh);
 504         if (set->set_lockh == NULL) {
 505                 CERROR("LOV: invalid lov lock handle %p\n", lockh);
 506                 GOTO(out_set, rc = -EINVAL);
 507         }
 508         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 509
 510         for (i = 0; i < lsm->lsm_stripe_count; i++){
 511                 struct lov_request *req;
 512                 struct lustre_handle *lov_lockhp;
 513                 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
 514
 515                 lov_lockhp = set->set_lockh->llh_handles + i;
 516                 if (!lustre_handle_is_used(lov_lockhp)) {
 517                         CDEBUG(D_INFO, "lov idx %d subobj "LPX64" no lock\n",
 518                                loi->loi_ost_idx, loi->loi_id);
 519                         continue;
 520                 }
 521
 522                 OBD_ALLOC(req, sizeof(*req));
 523                 if (req == NULL)
 524                         GOTO(out_set, rc = -ENOMEM);
 525
 526                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 527                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 528                 if (req->rq_oi.oi_md == NULL) {
 529                         OBD_FREE(req, sizeof(*req));
 530                         GOTO(out_set, rc = -ENOMEM);
 531                 }
 532
 533                 req->rq_idx = loi->loi_ost_idx;
 534                 req->rq_stripe = i;
 535
 536                 /* XXX LOV STACKING: submd should be from the subobj */
 537                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 538                 req->rq_oi.oi_md->lsm_object_gr = lsm->lsm_object_gr;
 539                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 540
 541                 lov_set_add_req(req, set);
 542         }
 543         if (!set->set_count)
 544                 GOTO(out_set, rc = -EIO);
 545         *reqset = set;
 546         RETURN(rc);
 547 out_set:
 548         lov_fini_cancel_set(set);
 549         RETURN(rc);
 550 }
 551
 552 static int create_done(struct obd_export *exp, struct lov_request_set *set,
 553                        struct lov_stripe_md **lsmp)
 554 {
 555         struct lov_obd *lov = &exp->exp_obd->u.lov;
 556         struct obd_trans_info *oti = set->set_oti;
 557         struct obdo *src_oa = set->set_oi->oi_oa;
 558         struct lov_request *req;
 559         struct obdo *ret_oa = NULL;
 560         int attrset = 0, rc = 0;
 561         ENTRY;
 562
 563         LASSERT(set->set_completes);
 564
 565         /* try alloc objects on other osts if osc_create fails for
 566          * exceptions: RPC failure, ENOSPC, etc */
 567         if (set->set_count != set->set_success) {
 568                 list_for_each_entry (req, &set->set_list, rq_link) {
 569                         if (req->rq_rc == 0)
 570                                 continue;
 571
 572                         set->set_completes--;
 573                         req->rq_complete = 0;
 574
 575                         rc = qos_remedy_create(set, req);
 576                         lov_update_create_set(set, req, rc);
 577                 }
 578         }
 579
 580         /* no successful creates */
 581         if (set->set_success == 0)
 582                 GOTO(cleanup, rc);
 583
 584         if (set->set_count != set->set_success) {
 585                 set->set_count = set->set_success;
 586                 qos_shrink_lsm(set);
 587         }
 588
 589         OBDO_ALLOC(ret_oa);
 590         if (ret_oa == NULL)
 591                 GOTO(cleanup, rc = -ENOMEM);
 592
 593         list_for_each_entry(req, &set->set_list, rq_link) {
 594                 if (!req->rq_complete || req->rq_rc)
 595                         continue;
 596                 lov_merge_attrs(ret_oa, req->rq_oi.oi_oa,
 597                                 req->rq_oi.oi_oa->o_valid, set->set_oi->oi_md,
 598                                 req->rq_stripe, &attrset);
 599         }
 600         if (src_oa->o_valid & OBD_MD_FLSIZE &&
 601             ret_oa->o_size != src_oa->o_size) {
 602                 CERROR("original size "LPU64" isn't new object size "LPU64"\n",
 603                        src_oa->o_size, ret_oa->o_size);
 604                 LBUG();
 605         }
 606         ret_oa->o_id = src_oa->o_id;
 607         ret_oa->o_gr = src_oa->o_gr;
 608         ret_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
 609         memcpy(src_oa, ret_oa, sizeof(*src_oa));
 610         OBDO_FREE(ret_oa);
 611
 612         *lsmp = set->set_oi->oi_md;
 613         GOTO(done, rc = 0);
 614
 615 cleanup:
 616         list_for_each_entry(req, &set->set_list, rq_link) {
 617                 struct obd_export *sub_exp;
 618                 int err = 0;
 619
 620                 if (!req->rq_complete || req->rq_rc)
 621                         continue;
 622
 623                 sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp;
 624                 err = obd_destroy(sub_exp, req->rq_oi.oi_oa, NULL, oti, NULL,
 625                                   NULL);
 626                 if (err)
 627                         CERROR("Failed to uncreate objid "LPX64" subobj "
 628                                LPX64" on OST idx %d: rc = %d\n",
 629                                src_oa->o_id, req->rq_oi.oi_oa->o_id,
 630                                req->rq_idx, rc);
 631         }
 632         if (*lsmp == NULL)
 633                 obd_free_memmd(exp, &set->set_oi->oi_md);
 634 done:
 635         if (oti && set->set_cookies) {
 636                 oti->oti_logcookies = set->set_cookies;
 637                 if (!set->set_cookie_sent) {
 638                         oti_free_cookies(oti);
 639                         src_oa->o_valid &= ~OBD_MD_FLCOOKIE;
 640                 } else {
 641                         src_oa->o_valid |= OBD_MD_FLCOOKIE;
 642                 }
 643         }
 644         RETURN(rc);
 645 }
 646
 647 int lov_fini_create_set(struct lov_request_set *set,struct lov_stripe_md **lsmp)
 648 {
 649         int rc = 0;
 650         ENTRY;
 651
 652         if (set == NULL)
 653                 RETURN(0);
 654         LASSERT(set->set_exp);
 655         if (set->set_completes)
 656                 rc = create_done(set->set_exp, set, lsmp);
 657
 658         lov_put_reqset(set);
 659         RETURN(rc);
 660 }
 661
 662 int lov_update_create_set(struct lov_request_set *set,
 663                           struct lov_request *req, int rc)
 664 {
 665         struct obd_trans_info *oti = set->set_oti;
 666         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 667         struct lov_oinfo *loi;
 668         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 669         ENTRY;
 670
 671         if (rc && lov->lov_tgts[req->rq_idx] &&
 672             lov->lov_tgts[req->rq_idx]->ltd_active) {
 673                 CERROR("error creating fid "LPX64" sub-object"
 674                        " on OST idx %d/%d: rc = %d\n",
 675                        set->set_oi->oi_oa->o_id, req->rq_idx,
 676                        lsm->lsm_stripe_count, rc);
 677                 if (rc > 0) {
 678                         CERROR("obd_create returned invalid err %d\n", rc);
 679                         rc = -EIO;
 680                 }
 681         }
 682
 683         spin_lock(&set->set_lock);
 684         req->rq_stripe = set->set_success;
 685         loi = lsm->lsm_oinfo[req->rq_stripe];
 686         if (rc) {
 687                 lov_update_set(set, req, rc);
 688                 spin_unlock(&set->set_lock);
 689                 RETURN(rc);
 690         }
 691
 692         loi->loi_id = req->rq_oi.oi_oa->o_id;
 693         loi->loi_gr = req->rq_oi.oi_oa->o_gr;
 694         loi->loi_ost_idx = req->rq_idx;
 695         loi_init(loi);
 696
 697         if (oti && set->set_cookies)
 698                 ++oti->oti_logcookies;
 699         if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCOOKIE)
 700                 set->set_cookie_sent++;
 701
 702         lov_update_set(set, req, rc);
 703         spin_unlock(&set->set_lock);
 704
 705         CDEBUG(D_INODE, "objid "LPX64" has subobj "LPX64"/"LPU64" at idx %d\n",
 706                lsm->lsm_object_id, loi->loi_id, loi->loi_id, req->rq_idx);
 707         RETURN(rc);
 708 }
 709
 710 int cb_create_update(void *cookie, int rc)
 711 {
 712         struct obd_info *oinfo = cookie;
 713         struct lov_request *lovreq;
 714
 715         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 716         rc= lov_update_create_set(lovreq->rq_rqset, lovreq, rc);
 717         if (lov_finished_set(lovreq->rq_rqset))
 718                 lov_put_reqset(lovreq->rq_rqset);
 719         return rc;
 720 }
 721
 722
 723 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oinfo,
 724                         struct lov_stripe_md **lsmp, struct obdo *src_oa,
 725                         struct obd_trans_info *oti,
 726                         struct lov_request_set **reqset)
 727 {
 728         struct lov_request_set *set;
 729         int rc = 0;
 730         ENTRY;
 731
 732         OBD_ALLOC(set, sizeof(*set));
 733         if (set == NULL)
 734                 RETURN(-ENOMEM);
 735         lov_init_set(set);
 736
 737         set->set_exp = exp;
 738         set->set_oi = oinfo;
 739         set->set_oi->oi_md = *lsmp;
 740         set->set_oi->oi_oa = src_oa;
 741         set->set_oti = oti;
 742         lov_get_reqset(set);
 743
 744         rc = qos_prep_create(exp, set);
 745         /* qos_shrink_lsm() may have allocated a new lsm */
 746         *lsmp = oinfo->oi_md;
 747         if (rc) {
 748                 lov_fini_create_set(set, lsmp);
 749                 lov_put_reqset(set);
 750         } else {
 751                 *reqset = set;
 752         }
 753         RETURN(rc);
 754 }
 755
 756 static int common_attr_done(struct lov_request_set *set)
 757 {
 758         struct list_head *pos;
 759         struct lov_request *req;
 760         struct obdo *tmp_oa;
 761         int rc = 0, attrset = 0;
 762         ENTRY;
 763
 764         LASSERT(set->set_oi != NULL);
 765
 766         if (set->set_oi->oi_oa == NULL)
 767                 RETURN(0);
 768
 769         if (!set->set_success)
 770                 RETURN(-EIO);
 771
 772         OBDO_ALLOC(tmp_oa);
 773         if (tmp_oa == NULL)
 774                 GOTO(out, rc = -ENOMEM);
 775
 776         list_for_each (pos, &set->set_list) {
 777                 req = list_entry(pos, struct lov_request, rq_link);
 778
 779                 if (!req->rq_complete || req->rq_rc)
 780                         continue;
 781                 if (req->rq_oi.oi_oa->o_valid == 0)   /* inactive stripe */
 782                         continue;
 783                 lov_merge_attrs(tmp_oa, req->rq_oi.oi_oa,
 784                                 req->rq_oi.oi_oa->o_valid,
 785                                 set->set_oi->oi_md, req->rq_stripe, &attrset);
 786         }
 787         if (!attrset) {
 788                 CERROR("No stripes had valid attrs\n");
 789                 rc = -EIO;
 790         }
 791         if ((set->set_oi->oi_oa->o_valid & OBD_MD_FLEPOCH) &&
 792             (set->set_oi->oi_md->lsm_stripe_count != attrset)) {
 793                 /* When we take attributes of some epoch, we require all the
 794                  * ost to be active. */
 795                 CERROR("Not all the stripes had valid attrs\n");
 796                 GOTO(out, rc = -EIO);
 797         }
 798
 799         tmp_oa->o_id = set->set_oi->oi_oa->o_id;
 800         memcpy(set->set_oi->oi_oa, tmp_oa, sizeof(*set->set_oi->oi_oa));
 801 out:
 802         if (tmp_oa)
 803                 OBDO_FREE(tmp_oa);
 804         RETURN(rc);
 805
 806 }
 807
 808 static int brw_done(struct lov_request_set *set)
 809 {
 810         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 811         struct lov_oinfo     *loi = NULL;
 812         struct list_head *pos;
 813         struct lov_request *req;
 814         ENTRY;
 815
 816         list_for_each (pos, &set->set_list) {
 817                 req = list_entry(pos, struct lov_request, rq_link);
 818
 819                 if (!req->rq_complete || req->rq_rc)
 820                         continue;
 821
 822                 loi = lsm->lsm_oinfo[req->rq_stripe];
 823
 824                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS)
 825                         loi->loi_lvb.lvb_blocks = req->rq_oi.oi_oa->o_blocks;
 826         }
 827
 828         RETURN(0);
 829 }
 830
 831 int lov_fini_brw_set(struct lov_request_set *set)
 832 {
 833         int rc = 0;
 834         ENTRY;
 835
 836         if (set == NULL)
 837                 RETURN(0);
 838         LASSERT(set->set_exp);
 839         if (set->set_completes) {
 840                 rc = brw_done(set);
 841                 /* FIXME update qos data here */
 842         }
 843         lov_put_reqset(set);
 844
 845         RETURN(rc);
 846 }
 847
 848 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
 849                      obd_count oa_bufs, struct brw_page *pga,
 850                      struct obd_trans_info *oti,
 851                      struct lov_request_set **reqset)
 852 {
 853         struct {
 854                 obd_count       index;
 855                 obd_count       count;
 856                 obd_count       off;
 857         } *info = NULL;
 858         struct lov_request_set *set;
 859         struct lov_obd *lov = &exp->exp_obd->u.lov;
 860         int rc = 0, i, shift;
 861         ENTRY;
 862
 863         OBD_ALLOC(set, sizeof(*set));
 864         if (set == NULL)
 865                 RETURN(-ENOMEM);
 866         lov_init_set(set);
 867
 868         set->set_exp = exp;
 869         set->set_oti = oti;
 870         set->set_oi = oinfo;
 871         set->set_oabufs = oa_bufs;
 872         OBD_ALLOC(set->set_pga, oa_bufs * sizeof(*set->set_pga));
 873         if (!set->set_pga)
 874                 GOTO(out, rc = -ENOMEM);
 875
 876         OBD_ALLOC(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 877         if (!info)
 878                 GOTO(out, rc = -ENOMEM);
 879
 880         /* calculate the page count for each stripe */
 881         for (i = 0; i < oa_bufs; i++) {
 882                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 883                 info[stripe].count++;
 884         }
 885
 886         /* alloc and initialize lov request */
 887         shift = 0;
 888         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++){
 889                 struct lov_oinfo *loi = NULL;
 890                 struct lov_request *req;
 891
 892                 if (info[i].count == 0)
 893                         continue;
 894
 895                 loi = oinfo->oi_md->lsm_oinfo[i];
 896                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 897                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 898                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 899                         GOTO(out, rc = -EIO);
 900                 }
 901
 902                 OBD_ALLOC(req, sizeof(*req));
 903                 if (req == NULL)
 904                         GOTO(out, rc = -ENOMEM);
 905
 906                 OBDO_ALLOC(req->rq_oi.oi_oa);
 907                 if (req->rq_oi.oi_oa == NULL) {
 908                         OBD_FREE(req, sizeof(*req));
 909                         GOTO(out, rc = -ENOMEM);
 910                 }
 911
 912                 if (oinfo->oi_oa) {
 913                         memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
 914                                sizeof(*req->rq_oi.oi_oa));
 915                 }
 916                 req->rq_oi.oi_oa->o_id = loi->loi_id;
 917                 req->rq_oi.oi_oa->o_stripe_idx = i;
 918
 919                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 920                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 921                 if (req->rq_oi.oi_md == NULL) {
 922                         OBDO_FREE(req->rq_oi.oi_oa);
 923                         OBD_FREE(req, sizeof(*req));
 924                         GOTO(out, rc = -ENOMEM);
 925                 }
 926
 927                 req->rq_idx = loi->loi_ost_idx;
 928                 req->rq_stripe = i;
 929
 930                 /* XXX LOV STACKING */
 931                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 932                 req->rq_oi.oi_md->lsm_object_gr = oinfo->oi_md->lsm_object_gr;
 933                 req->rq_oabufs = info[i].count;
 934                 req->rq_pgaidx = shift;
 935                 shift += req->rq_oabufs;
 936
 937                 /* remember the index for sort brw_page array */
 938                 info[i].index = req->rq_pgaidx;
 939
 940                 req->rq_oi.oi_capa = oinfo->oi_capa;
 941
 942                 lov_set_add_req(req, set);
 943         }
 944         if (!set->set_count)
 945                 GOTO(out, rc = -EIO);
 946
 947         /* rotate & sort the brw_page array */
 948         for (i = 0; i < oa_bufs; i++) {
 949                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 950
 951                 shift = info[stripe].index + info[stripe].off;
 952                 LASSERT(shift < oa_bufs);
 953                 set->set_pga[shift] = pga[i];
 954                 lov_stripe_offset(oinfo->oi_md, pga[i].off, stripe,
 955                                   &set->set_pga[shift].off);
 956                 info[stripe].off++;
 957         }
 958 out:
 959         if (info)
 960                 OBD_FREE(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 961
 962         if (rc == 0)
 963                 *reqset = set;
 964         else
 965                 lov_fini_brw_set(set);
 966
 967         RETURN(rc);
 968 }
 969
 970 int lov_fini_getattr_set(struct lov_request_set *set)
 971 {
 972         int rc = 0;
 973         ENTRY;
 974
 975         if (set == NULL)
 976                 RETURN(0);
 977         LASSERT(set->set_exp);
 978         if (set->set_completes)
 979                 rc = common_attr_done(set);
 980
 981         lov_put_reqset(set);
 982
 983         RETURN(rc);
 984 }
 985
 986 /* The callback for osc_getattr_async that finilizes a request info when a
 987  * response is received. */
 988 static int cb_getattr_update(void *cookie, int rc)
 989 {
 990         struct obd_info *oinfo = cookie;
 991         struct lov_request *lovreq;
 992         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 993         return lov_update_common_set(lovreq->rq_rqset, lovreq, rc);
 994 }
 995
 996 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
 997                          struct lov_request_set **reqset)
 998 {
 999         struct lov_request_set *set;
1000         struct lov_obd *lov = &exp->exp_obd->u.lov;
1001         int rc = 0, i;
1002         ENTRY;
1003
1004         OBD_ALLOC(set, sizeof(*set));
1005         if (set == NULL)
1006                 RETURN(-ENOMEM);
1007         lov_init_set(set);
1008
1009         set->set_exp = exp;
1010         set->set_oi = oinfo;
1011
1012         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1013                 struct lov_oinfo *loi;
1014                 struct lov_request *req;
1015
1016                 loi = oinfo->oi_md->lsm_oinfo[i];
1017                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1018                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1019                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1020                         if (oinfo->oi_oa->o_valid & OBD_MD_FLEPOCH)
1021                                 /* SOM requires all the OSTs to be active. */
1022                                 GOTO(out_set, rc = -EIO);
1023                         continue;
1024                 }
1025
1026                 OBD_ALLOC(req, sizeof(*req));
1027                 if (req == NULL)
1028                         GOTO(out_set, rc = -ENOMEM);
1029
1030                 req->rq_stripe = i;
1031                 req->rq_idx = loi->loi_ost_idx;
1032
1033                 OBDO_ALLOC(req->rq_oi.oi_oa);
1034                 if (req->rq_oi.oi_oa == NULL) {
1035                         OBD_FREE(req, sizeof(*req));
1036                         GOTO(out_set, rc = -ENOMEM);
1037                 }
1038                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1039                        sizeof(*req->rq_oi.oi_oa));
1040                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1041                 req->rq_oi.oi_cb_up = cb_getattr_update;
1042                 req->rq_oi.oi_capa = oinfo->oi_capa;
1043
1044                 lov_set_add_req(req, set);
1045         }
1046         if (!set->set_count)
1047                 GOTO(out_set, rc = -EIO);
1048         *reqset = set;
1049         RETURN(rc);
1050 out_set:
1051         lov_fini_getattr_set(set);
1052         RETURN(rc);
1053 }
1054
1055 int lov_fini_destroy_set(struct lov_request_set *set)
1056 {
1057         ENTRY;
1058
1059         if (set == NULL)
1060                 RETURN(0);
1061         LASSERT(set->set_exp);
1062         if (set->set_completes) {
1063                 /* FIXME update qos data here */
1064         }
1065
1066         lov_put_reqset(set);
1067
1068         RETURN(0);
1069 }
1070
1071 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
1072                          struct obdo *src_oa, struct lov_stripe_md *lsm,
1073                          struct obd_trans_info *oti,
1074                          struct lov_request_set **reqset)
1075 {
1076         struct lov_request_set *set;
1077         struct lov_obd *lov = &exp->exp_obd->u.lov;
1078         int rc = 0, i;
1079         ENTRY;
1080
1081         OBD_ALLOC(set, sizeof(*set));
1082         if (set == NULL)
1083                 RETURN(-ENOMEM);
1084         lov_init_set(set);
1085
1086         set->set_exp = exp;
1087         set->set_oi = oinfo;
1088         set->set_oi->oi_md = lsm;
1089         set->set_oi->oi_oa = src_oa;
1090         set->set_oti = oti;
1091         if (oti != NULL && src_oa->o_valid & OBD_MD_FLCOOKIE)
1092                 set->set_cookies = oti->oti_logcookies;
1093
1094         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1095                 struct lov_oinfo *loi;
1096                 struct lov_request *req;
1097
1098                 loi = lsm->lsm_oinfo[i];
1099                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1100                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1101                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1102                         continue;
1103                 }
1104
1105                 OBD_ALLOC(req, sizeof(*req));
1106                 if (req == NULL)
1107                         GOTO(out_set, rc = -ENOMEM);
1108
1109                 req->rq_stripe = i;
1110                 req->rq_idx = loi->loi_ost_idx;
1111
1112                 OBDO_ALLOC(req->rq_oi.oi_oa);
1113                 if (req->rq_oi.oi_oa == NULL) {
1114                         OBD_FREE(req, sizeof(*req));
1115                         GOTO(out_set, rc = -ENOMEM);
1116                 }
1117                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1118                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1119                 lov_set_add_req(req, set);
1120         }
1121         if (!set->set_count)
1122                 GOTO(out_set, rc = -EIO);
1123         *reqset = set;
1124         RETURN(rc);
1125 out_set:
1126         lov_fini_destroy_set(set);
1127         RETURN(rc);
1128 }
1129
1130 int lov_fini_setattr_set(struct lov_request_set *set)
1131 {
1132         int rc = 0;
1133         ENTRY;
1134
1135         if (set == NULL)
1136                 RETURN(0);
1137         LASSERT(set->set_exp);
1138         if (set->set_completes) {
1139                 rc = common_attr_done(set);
1140                 /* FIXME update qos data here */
1141         }
1142
1143         lov_put_reqset(set);
1144         RETURN(rc);
1145 }
1146
1147 int lov_update_setattr_set(struct lov_request_set *set,
1148                            struct lov_request *req, int rc)
1149 {
1150         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1151         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1152         ENTRY;
1153
1154         lov_update_set(set, req, rc);
1155
1156         /* grace error on inactive ost */
1157         if (rc && !(lov->lov_tgts[req->rq_idx] &&
1158                     lov->lov_tgts[req->rq_idx]->ltd_active))
1159                 rc = 0;
1160
1161         if (rc == 0) {
1162                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCTIME)
1163                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_ctime =
1164                                 req->rq_oi.oi_oa->o_ctime;
1165                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLMTIME)
1166                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_mtime =
1167                                 req->rq_oi.oi_oa->o_mtime;
1168                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLATIME)
1169                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_atime =
1170                                 req->rq_oi.oi_oa->o_atime;
1171         }
1172
1173         RETURN(rc);
1174 }
1175
1176 /* The callback for osc_setattr_async that finilizes a request info when a
1177  * response is received. */
1178 static int cb_setattr_update(void *cookie, int rc)
1179 {
1180         struct obd_info *oinfo = cookie;
1181         struct lov_request *lovreq;
1182         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1183         return lov_update_setattr_set(lovreq->rq_rqset, lovreq, rc);
1184 }
1185
1186 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
1187                          struct obd_trans_info *oti,
1188                          struct lov_request_set **reqset)
1189 {
1190         struct lov_request_set *set;
1191         struct lov_obd *lov = &exp->exp_obd->u.lov;
1192         int rc = 0, i;
1193         ENTRY;
1194
1195         OBD_ALLOC(set, sizeof(*set));
1196         if (set == NULL)
1197                 RETURN(-ENOMEM);
1198         lov_init_set(set);
1199
1200         set->set_exp = exp;
1201         set->set_oti = oti;
1202         set->set_oi = oinfo;
1203         if (oti != NULL && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
1204                 set->set_cookies = oti->oti_logcookies;
1205
1206         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1207                 struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
1208                 struct lov_request *req;
1209
1210                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1211                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1212                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1213                         continue;
1214                 }
1215
1216                 OBD_ALLOC(req, sizeof(*req));
1217                 if (req == NULL)
1218                         GOTO(out_set, rc = -ENOMEM);
1219                 req->rq_stripe = i;
1220                 req->rq_idx = loi->loi_ost_idx;
1221
1222                 OBDO_ALLOC(req->rq_oi.oi_oa);
1223                 if (req->rq_oi.oi_oa == NULL) {
1224                         OBD_FREE(req, sizeof(*req));
1225                         GOTO(out_set, rc = -ENOMEM);
1226                 }
1227                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1228                        sizeof(*req->rq_oi.oi_oa));
1229                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1230                 req->rq_oi.oi_oa->o_stripe_idx = i;
1231                 req->rq_oi.oi_cb_up = cb_setattr_update;
1232                 req->rq_oi.oi_capa = oinfo->oi_capa;
1233
1234                 if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE) {
1235                         int off = lov_stripe_offset(oinfo->oi_md,
1236                                                     oinfo->oi_oa->o_size, i,
1237                                                     &req->rq_oi.oi_oa->o_size);
1238
1239                         if (off < 0 && req->rq_oi.oi_oa->o_size)
1240                                 req->rq_oi.oi_oa->o_size--;
1241
1242                         CDEBUG(D_INODE, "stripe %d has size "LPU64"/"LPU64"\n",
1243                                i, req->rq_oi.oi_oa->o_size,
1244                                oinfo->oi_oa->o_size);
1245                 }
1246                 lov_set_add_req(req, set);
1247         }
1248         if (!set->set_count)
1249                 GOTO(out_set, rc = -EIO);
1250         *reqset = set;
1251         RETURN(rc);
1252 out_set:
1253         lov_fini_setattr_set(set);
1254         RETURN(rc);
1255 }
1256
1257 int lov_fini_punch_set(struct lov_request_set *set)
1258 {
1259         int rc = 0;
1260         ENTRY;
1261
1262         if (set == NULL)
1263                 RETURN(0);
1264         LASSERT(set->set_exp);
1265         if (set->set_completes) {
1266                 rc = -EIO;
1267                 /* FIXME update qos data here */
1268                 if (set->set_success)
1269                         rc = common_attr_done(set);
1270         }
1271
1272         lov_put_reqset(set);
1273
1274         RETURN(rc);
1275 }
1276
1277 int lov_update_punch_set(struct lov_request_set *set,
1278                          struct lov_request *req, int rc)
1279 {
1280         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1281         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1282         ENTRY;
1283
1284         lov_update_set(set, req, rc);
1285
1286         /* grace error on inactive ost */
1287         if (rc && !lov->lov_tgts[req->rq_idx]->ltd_active)
1288                 rc = 0;
1289
1290         if (rc == 0) {
1291                 lov_stripe_lock(lsm);
1292                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS) {
1293                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_blocks =
1294                                 req->rq_oi.oi_oa->o_blocks;
1295                 }
1296
1297                 /* Do we need to update lvb_size here? It needn't because
1298                  * it have been done in ll_truncate(). -jay */
1299                 lov_stripe_unlock(lsm);
1300         }
1301
1302         RETURN(rc);
1303 }
1304
1305 /* The callback for osc_punch that finilizes a request info when a response
1306  * is received. */
1307 static int cb_update_punch(void *cookie, int rc)
1308 {
1309         struct obd_info *oinfo = cookie;
1310         struct lov_request *lovreq;
1311         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1312         return lov_update_punch_set(lovreq->rq_rqset, lovreq, rc);
1313 }
1314
1315 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
1316                        struct obd_trans_info *oti,
1317                        struct lov_request_set **reqset)
1318 {
1319         struct lov_request_set *set;
1320         struct lov_obd *lov = &exp->exp_obd->u.lov;
1321         int rc = 0, i;
1322         ENTRY;
1323
1324         OBD_ALLOC(set, sizeof(*set));
1325         if (set == NULL)
1326                 RETURN(-ENOMEM);
1327         lov_init_set(set);
1328
1329         set->set_oi = oinfo;
1330         set->set_exp = exp;
1331
1332         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1333                 struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
1334                 struct lov_request *req;
1335                 obd_off rs, re;
1336
1337                 if (!lov_stripe_intersects(oinfo->oi_md, i,
1338                                            oinfo->oi_policy.l_extent.start,
1339                                            oinfo->oi_policy.l_extent.end,
1340                                            &rs, &re))
1341                         continue;
1342
1343                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1344                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1345                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1346                         GOTO(out_set, rc = -EIO);
1347                 }
1348
1349                 OBD_ALLOC(req, sizeof(*req));
1350                 if (req == NULL)
1351                         GOTO(out_set, rc = -ENOMEM);
1352                 req->rq_stripe = i;
1353                 req->rq_idx = loi->loi_ost_idx;
1354
1355                 OBDO_ALLOC(req->rq_oi.oi_oa);
1356                 if (req->rq_oi.oi_oa == NULL) {
1357                         OBD_FREE(req, sizeof(*req));
1358                         GOTO(out_set, rc = -ENOMEM);
1359                 }
1360                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1361                        sizeof(*req->rq_oi.oi_oa));
1362                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1363                 req->rq_oi.oi_oa->o_gr = loi->loi_gr;
1364                 req->rq_oi.oi_oa->o_valid |= OBD_MD_FLGROUP;
1365
1366                 req->rq_oi.oi_oa->o_stripe_idx = i;
1367                 req->rq_oi.oi_cb_up = cb_update_punch;
1368
1369                 req->rq_oi.oi_policy.l_extent.start = rs;
1370                 req->rq_oi.oi_policy.l_extent.end = re;
1371                 req->rq_oi.oi_policy.l_extent.gid = -1;
1372
1373                 req->rq_oi.oi_capa = oinfo->oi_capa;
1374
1375                 lov_set_add_req(req, set);
1376         }
1377         if (!set->set_count)
1378                 GOTO(out_set, rc = -EIO);
1379         *reqset = set;
1380         RETURN(rc);
1381 out_set:
1382         lov_fini_punch_set(set);
1383         RETURN(rc);
1384 }
1385
1386 int lov_fini_sync_set(struct lov_request_set *set)
1387 {
1388         int rc = 0;
1389         ENTRY;
1390
1391         if (set == NULL)
1392                 RETURN(0);
1393         LASSERT(set->set_exp);
1394         if (set->set_completes) {
1395                 if (!set->set_success)
1396                         rc = -EIO;
1397                 /* FIXME update qos data here */
1398         }
1399
1400         lov_put_reqset(set);
1401
1402         RETURN(rc);
1403 }
1404
1405 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *oinfo,
1406                       struct obdo *src_oa, struct lov_stripe_md *lsm,
1407                       obd_off start, obd_off end,
1408                       struct lov_request_set **reqset)
1409 {
1410         struct lov_request_set *set;
1411         struct lov_obd *lov = &exp->exp_obd->u.lov;
1412         int rc = 0, i;
1413         ENTRY;
1414
1415         OBD_ALLOC(set, sizeof(*set));
1416         if (set == NULL)
1417                 RETURN(-ENOMEM);
1418         lov_init_set(set);
1419
1420         set->set_exp = exp;
1421         set->set_oi = oinfo;
1422         set->set_oi->oi_md = lsm;
1423         set->set_oi->oi_oa = src_oa;
1424
1425         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1426                 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
1427                 struct lov_request *req;
1428                 obd_off rs, re;
1429
1430                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1431                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1432                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1433                         continue;
1434                 }
1435
1436                 if (!lov_stripe_intersects(lsm, i, start, end, &rs, &re))
1437                         continue;
1438
1439                 OBD_ALLOC(req, sizeof(*req));
1440                 if (req == NULL)
1441                         GOTO(out_set, rc = -ENOMEM);
1442                 req->rq_stripe = i;
1443                 req->rq_idx = loi->loi_ost_idx;
1444
1445                 OBDO_ALLOC(req->rq_oi.oi_oa);
1446                 if (req->rq_oi.oi_oa == NULL) {
1447                         OBD_FREE(req, sizeof(*req));
1448                         GOTO(out_set, rc = -ENOMEM);
1449                 }
1450                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1451                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1452                 req->rq_oi.oi_oa->o_stripe_idx = i;
1453
1454                 req->rq_oi.oi_policy.l_extent.start = rs;
1455                 req->rq_oi.oi_policy.l_extent.end = re;
1456                 req->rq_oi.oi_policy.l_extent.gid = -1;
1457
1458                 lov_set_add_req(req, set);
1459         }
1460         if (!set->set_count)
1461                 GOTO(out_set, rc = -EIO);
1462         *reqset = set;
1463         RETURN(rc);
1464 out_set:
1465         lov_fini_sync_set(set);
1466         RETURN(rc);
1467 }
1468
1469 #define LOV_U64_MAX ((__u64)~0ULL)
1470 #define LOV_SUM_MAX(tot, add)                                           \
1471         do {                                                            \
1472                 if ((tot) + (add) < (tot))                              \
1473                         (tot) = LOV_U64_MAX;                            \
1474                 else                                                    \
1475                         (tot) += (add);                                 \
1476         } while(0)
1477
1478 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,int success)
1479 {
1480         ENTRY;
1481
1482         if (success) {
1483                 __u32 expected_stripes = lov_get_stripecnt(&obd->u.lov, 0);
1484
1485                 if (osfs->os_files != LOV_U64_MAX)
1486                         do_div(osfs->os_files, expected_stripes);
1487                 if (osfs->os_ffree != LOV_U64_MAX)
1488                         do_div(osfs->os_ffree, expected_stripes);
1489
1490                 spin_lock(&obd->obd_osfs_lock);
1491                 memcpy(&obd->obd_osfs, osfs, sizeof(*osfs));
1492                 obd->obd_osfs_age = cfs_time_current_64();
1493                 spin_unlock(&obd->obd_osfs_lock);
1494                 RETURN(0);
1495         }
1496
1497         RETURN(-EIO);
1498 }
1499
1500 int lov_fini_statfs_set(struct lov_request_set *set)
1501 {
1502         int rc = 0;
1503         ENTRY;
1504
1505         if (set == NULL)
1506                 RETURN(0);
1507
1508         if (set->set_completes) {
1509                 rc = lov_fini_statfs(set->set_obd, set->set_oi->oi_osfs,
1510                                      set->set_success);
1511         }
1512         lov_put_reqset(set);
1513         RETURN(rc);
1514 }
1515
1516 void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
1517                        int success)
1518 {
1519         int shift = 0, quit = 0;
1520         __u64 tmp;
1521
1522         if (success == 0) {
1523                 memcpy(osfs, lov_sfs, sizeof(*lov_sfs));
1524         } else {
1525                 if (osfs->os_bsize != lov_sfs->os_bsize) {
1526                         /* assume all block sizes are always powers of 2 */
1527                         /* get the bits difference */
1528                         tmp = osfs->os_bsize | lov_sfs->os_bsize;
1529                         for (shift = 0; shift <= 64; ++shift) {
1530                                 if (tmp & 1) {
1531                                         if (quit)
1532                                                 break;
1533                                         else
1534                                                 quit = 1;
1535                                         shift = 0;
1536                                 }
1537                                 tmp >>= 1;
1538                         }
1539                 }
1540
1541                 if (osfs->os_bsize < lov_sfs->os_bsize) {
1542                         osfs->os_bsize = lov_sfs->os_bsize;
1543
1544                         osfs->os_bfree  >>= shift;
1545                         osfs->os_bavail >>= shift;
1546                         osfs->os_blocks >>= shift;
1547                 } else if (shift != 0) {
1548                         lov_sfs->os_bfree  >>= shift;
1549                         lov_sfs->os_bavail >>= shift;
1550                         lov_sfs->os_blocks >>= shift;
1551                 }
1552 #ifdef MIN_DF
1553                 /* Sandia requested that df (and so, statfs) only
1554                    returned minimal available space on
1555                    a single OST, so people would be able to
1556                    write this much data guaranteed. */
1557                 if (osfs->os_bavail > lov_sfs->os_bavail) {
1558                         /* Presumably if new bavail is smaller,
1559                            new bfree is bigger as well */
1560                         osfs->os_bfree = lov_sfs->os_bfree;
1561                         osfs->os_bavail = lov_sfs->os_bavail;
1562                 }
1563 #else
1564                 osfs->os_bfree += lov_sfs->os_bfree;
1565                 osfs->os_bavail += lov_sfs->os_bavail;
1566 #endif
1567                 osfs->os_blocks += lov_sfs->os_blocks;
1568                 /* XXX not sure about this one - depends on policy.
1569                  *   - could be minimum if we always stripe on all OBDs
1570                  *     (but that would be wrong for any other policy,
1571                  *     if one of the OBDs has no more objects left)
1572                  *   - could be sum if we stripe whole objects
1573                  *   - could be average, just to give a nice number
1574                  *
1575                  * To give a "reasonable" (if not wholly accurate)
1576                  * number, we divide the total number of free objects
1577                  * by expected stripe count (watch out for overflow).
1578                  */
1579                 LOV_SUM_MAX(osfs->os_files, lov_sfs->os_files);
1580                 LOV_SUM_MAX(osfs->os_ffree, lov_sfs->os_ffree);
1581         }
1582 }
1583
1584 /* The callback for osc_statfs_async that finilizes a request info when a
1585  * response is received. */
1586 static int cb_statfs_update(void *cookie, int rc)
1587 {
1588         struct obd_info *oinfo = cookie;
1589         struct lov_request *lovreq;
1590         struct obd_statfs *osfs, *lov_sfs;
1591         struct lov_obd *lov;
1592         struct lov_tgt_desc *tgt;
1593         struct obd_device *lovobd, *tgtobd;
1594         int success;
1595         ENTRY;
1596
1597         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1598         lovobd = lovreq->rq_rqset->set_obd;
1599         lov = &lovobd->u.lov;
1600         osfs = lovreq->rq_rqset->set_oi->oi_osfs;
1601         lov_sfs = oinfo->oi_osfs;
1602         success = lovreq->rq_rqset->set_success;
1603         /* XXX: the same is done in lov_update_common_set, however
1604            lovset->set_exp is not initialized. */
1605         lov_update_set(lovreq->rq_rqset, lovreq, rc);
1606         if (rc)
1607                 GOTO(out, rc);
1608
1609         obd_getref(lovobd);
1610         tgt = lov->lov_tgts[lovreq->rq_idx];
1611         if (!tgt || !tgt->ltd_active)
1612                 GOTO(out_update, rc);
1613
1614         tgtobd = class_exp2obd(tgt->ltd_exp);
1615         spin_lock(&tgtobd->obd_osfs_lock);
1616         memcpy(&tgtobd->obd_osfs, lov_sfs, sizeof(*lov_sfs));
1617         if ((oinfo->oi_flags & OBD_STATFS_FROM_CACHE) == 0)
1618                 tgtobd->obd_osfs_age = cfs_time_current_64();
1619         spin_unlock(&tgtobd->obd_osfs_lock);
1620
1621 out_update:
1622         lov_update_statfs(osfs, lov_sfs, success);
1623         qos_update(lov);
1624         obd_putref(lovobd);
1625
1626 out:
1627         if (lovreq->rq_rqset->set_oi->oi_flags & OBD_STATFS_PTLRPCD &&
1628             lov_finished_set(lovreq->rq_rqset)) {
1629                lov_statfs_interpret(NULL, lovreq->rq_rqset,
1630                                     lovreq->rq_rqset->set_success !=
1631                                                   lovreq->rq_rqset->set_count);
1632                qos_statfs_done(lov);
1633         }
1634
1635         RETURN(0);
1636 }
1637
1638 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
1639                         struct lov_request_set **reqset)
1640 {
1641         struct lov_request_set *set;
1642         struct lov_obd *lov = &obd->u.lov;
1643         int rc = 0, i;
1644         ENTRY;
1645
1646         OBD_ALLOC(set, sizeof(*set));
1647         if (set == NULL)
1648                 RETURN(-ENOMEM);
1649         lov_init_set(set);
1650
1651         set->set_obd = obd;
1652         set->set_oi = oinfo;
1653
1654         /* We only get block data from the OBD */
1655         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
1656                 struct lov_request *req;
1657
1658                 if (!lov->lov_tgts[i] || (!lov->lov_tgts[i]->ltd_active
1659                                           && (oinfo->oi_flags & OBD_STATFS_NODELAY))) {
1660                         CDEBUG(D_HA, "lov idx %d inactive\n", i);
1661                         continue;
1662                 }
1663
1664                 /* skip targets that have been explicitely disabled by the
1665                  * administrator */
1666                 if (!lov->lov_tgts[i]->ltd_exp) {
1667                         CDEBUG(D_HA, "lov idx %d administratively disabled\n", i);
1668                         continue;
1669                 }
1670
1671                 OBD_ALLOC(req, sizeof(*req));
1672                 if (req == NULL)
1673                         GOTO(out_set, rc = -ENOMEM);
1674
1675                 OBD_ALLOC(req->rq_oi.oi_osfs, sizeof(*req->rq_oi.oi_osfs));
1676                 if (req->rq_oi.oi_osfs == NULL) {
1677                         OBD_FREE(req, sizeof(*req));
1678                         GOTO(out_set, rc = -ENOMEM);
1679                 }
1680
1681                 req->rq_idx = i;
1682                 req->rq_oi.oi_cb_up = cb_statfs_update;
1683                 req->rq_oi.oi_flags = oinfo->oi_flags;
1684
1685                 lov_set_add_req(req, set);
1686         }
1687         if (!set->set_count)
1688                 GOTO(out_set, rc = -EIO);
1689         *reqset = set;
1690         RETURN(rc);
1691 out_set:
1692         lov_fini_statfs_set(set);
1693         RETURN(rc);
1694 }