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 (c) 2005, 2010, Oracle and/or its affiliates. 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         cfs_atomic_set(&set->set_refcount, 1);
  62         cfs_waitq_init(&set->set_waitq);
  63         cfs_spin_lock_init(&set->set_lock);
  64 }
  65
  66 void lov_finish_set(struct lov_request_set *set)
  67 {
  68         cfs_list_t *pos, *n;
  69         ENTRY;
  70
  71         LASSERT(set);
  72         cfs_list_for_each_safe(pos, n, &set->set_list) {
  73                 struct lov_request *req = cfs_list_entry(pos,
  74                                                          struct lov_request,
  75                                                          rq_link);
  76                 cfs_list_del_init(&req->rq_link);
  77
  78                 if (req->rq_oi.oi_oa)
  79                         OBDO_FREE(req->rq_oi.oi_oa);
  80                 if (req->rq_oi.oi_md)
  81                         OBD_FREE_LARGE(req->rq_oi.oi_md, req->rq_buflen);
  82                 if (req->rq_oi.oi_osfs)
  83                         OBD_FREE(req->rq_oi.oi_osfs,
  84                                  sizeof(*req->rq_oi.oi_osfs));
  85                 OBD_FREE(req, sizeof(*req));
  86         }
  87
  88         if (set->set_pga) {
  89                 int len = set->set_oabufs * sizeof(*set->set_pga);
  90                 OBD_FREE_LARGE(set->set_pga, len);
  91         }
  92         if (set->set_lockh)
  93                 lov_llh_put(set->set_lockh);
  94
  95         OBD_FREE(set, sizeof(*set));
  96         EXIT;
  97 }
  98
  99 int lov_finished_set(struct lov_request_set *set)
 100 {
 101         CDEBUG(D_INFO, "check set %d/%d\n", set->set_completes,
 102                set->set_count);
 103         return set->set_completes == set->set_count;
 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         cfs_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         cfs_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_LARGE(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_seq = loi->loi_seq;
 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_LARGE(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_seq = loi->loi_seq;
 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_LARGE(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_seq = loi->loi_seq;
 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 lov_update_create_set(struct lov_request_set *set,
 553                                  struct lov_request *req, int rc)
 554 {
 555         struct obd_trans_info *oti = set->set_oti;
 556         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 557         struct lov_oinfo *loi;
 558         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 559         ENTRY;
 560
 561         if (rc && lov->lov_tgts[req->rq_idx] &&
 562             lov->lov_tgts[req->rq_idx]->ltd_active) {
 563                 CERROR("error creating fid "LPX64" sub-object"
 564                        " on OST idx %d/%d: rc = %d\n",
 565                        set->set_oi->oi_oa->o_id, req->rq_idx,
 566                        lsm->lsm_stripe_count, rc);
 567                 if (rc > 0) {
 568                         CERROR("obd_create returned invalid err %d\n", rc);
 569                         rc = -EIO;
 570                 }
 571         }
 572
 573         cfs_spin_lock(&set->set_lock);
 574         req->rq_stripe = set->set_success;
 575         loi = lsm->lsm_oinfo[req->rq_stripe];
 576
 577
 578         if (rc) {
 579                 lov_update_set(set, req, rc);
 580                 cfs_spin_unlock(&set->set_lock);
 581                 RETURN(rc);
 582         }
 583
 584         loi->loi_id = req->rq_oi.oi_oa->o_id;
 585         loi->loi_seq = req->rq_oi.oi_oa->o_seq;
 586         loi->loi_ost_idx = req->rq_idx;
 587         loi_init(loi);
 588
 589         if (oti && set->set_cookies)
 590                 ++oti->oti_logcookies;
 591         if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCOOKIE)
 592                 set->set_cookie_sent++;
 593
 594         lov_update_set(set, req, rc);
 595         cfs_spin_unlock(&set->set_lock);
 596
 597         CDEBUG(D_INODE, "objid "LPX64" has subobj "LPX64"/"LPU64" at idx %d\n",
 598                lsm->lsm_object_id, loi->loi_id, loi->loi_id, req->rq_idx);
 599         RETURN(rc);
 600 }
 601
 602 static int create_done(struct obd_export *exp, struct lov_request_set *set,
 603                        struct lov_stripe_md **lsmp)
 604 {
 605         struct lov_obd *lov = &exp->exp_obd->u.lov;
 606         struct obd_trans_info *oti = set->set_oti;
 607         struct obdo *src_oa = set->set_oi->oi_oa;
 608         struct lov_request *req;
 609         struct obdo *ret_oa = NULL;
 610         int attrset = 0, rc = 0;
 611         ENTRY;
 612
 613         LASSERT(set->set_completes);
 614
 615         /* try alloc objects on other osts if osc_create fails for
 616          * exceptions: RPC failure, ENOSPC, etc */
 617         if (set->set_count != set->set_success) {
 618                 cfs_list_for_each_entry (req, &set->set_list, rq_link) {
 619                         if (req->rq_rc == 0)
 620                                 continue;
 621
 622                         set->set_completes--;
 623                         req->rq_complete = 0;
 624
 625                         rc = qos_remedy_create(set, req);
 626                         lov_update_create_set(set, req, rc);
 627                 }
 628         }
 629
 630         /* no successful creates */
 631         if (set->set_success == 0)
 632                 GOTO(cleanup, rc);
 633
 634         if (set->set_count != set->set_success) {
 635                 set->set_count = set->set_success;
 636                 qos_shrink_lsm(set);
 637         }
 638
 639         OBDO_ALLOC(ret_oa);
 640         if (ret_oa == NULL)
 641                 GOTO(cleanup, rc = -ENOMEM);
 642
 643         cfs_list_for_each_entry(req, &set->set_list, rq_link) {
 644                 if (!req->rq_complete || req->rq_rc)
 645                         continue;
 646                 lov_merge_attrs(ret_oa, req->rq_oi.oi_oa,
 647                                 req->rq_oi.oi_oa->o_valid, set->set_oi->oi_md,
 648                                 req->rq_stripe, &attrset);
 649         }
 650         if (src_oa->o_valid & OBD_MD_FLSIZE &&
 651             ret_oa->o_size != src_oa->o_size) {
 652                 CERROR("original size "LPU64" isn't new object size "LPU64"\n",
 653                        src_oa->o_size, ret_oa->o_size);
 654                 LBUG();
 655         }
 656         ret_oa->o_id = src_oa->o_id;
 657         ret_oa->o_seq = src_oa->o_seq;
 658         ret_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
 659         memcpy(src_oa, ret_oa, sizeof(*src_oa));
 660         OBDO_FREE(ret_oa);
 661
 662         *lsmp = set->set_oi->oi_md;
 663         GOTO(done, rc = 0);
 664
 665 cleanup:
 666         cfs_list_for_each_entry(req, &set->set_list, rq_link) {
 667                 struct obd_export *sub_exp;
 668                 int err = 0;
 669
 670                 if (!req->rq_complete || req->rq_rc)
 671                         continue;
 672
 673                 sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp;
 674                 err = obd_destroy(sub_exp, req->rq_oi.oi_oa, NULL, oti, NULL,
 675                                   NULL);
 676                 if (err)
 677                         CERROR("Failed to uncreate objid "LPX64" subobj "
 678                                LPX64" on OST idx %d: rc = %d\n",
 679                                src_oa->o_id, req->rq_oi.oi_oa->o_id,
 680                                req->rq_idx, rc);
 681         }
 682         if (*lsmp == NULL)
 683                 obd_free_memmd(exp, &set->set_oi->oi_md);
 684 done:
 685         if (oti && set->set_cookies) {
 686                 oti->oti_logcookies = set->set_cookies;
 687                 if (!set->set_cookie_sent) {
 688                         oti_free_cookies(oti);
 689                         src_oa->o_valid &= ~OBD_MD_FLCOOKIE;
 690                 } else {
 691                         src_oa->o_valid |= OBD_MD_FLCOOKIE;
 692                 }
 693         }
 694         RETURN(rc);
 695 }
 696
 697 int lov_fini_create_set(struct lov_request_set *set,struct lov_stripe_md **lsmp)
 698 {
 699         int rc = 0;
 700         ENTRY;
 701
 702         if (set == NULL)
 703                 RETURN(0);
 704         LASSERT(set->set_exp);
 705         if (set->set_completes)
 706                 rc = create_done(set->set_exp, set, lsmp);
 707
 708         lov_put_reqset(set);
 709         RETURN(rc);
 710 }
 711
 712 int cb_create_update(void *cookie, int rc)
 713 {
 714         struct obd_info *oinfo = cookie;
 715         struct lov_request *lovreq;
 716
 717         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 718
 719         if (OBD_FAIL_CHECK(OBD_FAIL_MDS_OSC_CREATE_FAIL))
 720                 if (lovreq->rq_idx == obd_fail_val)
 721                         rc = -ENOTCONN;
 722
 723         rc= lov_update_create_set(lovreq->rq_rqset, lovreq, rc);
 724         if (lov_finished_set(lovreq->rq_rqset))
 725                 lov_put_reqset(lovreq->rq_rqset);
 726         return rc;
 727 }
 728
 729 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oinfo,
 730                         struct lov_stripe_md **lsmp, struct obdo *src_oa,
 731                         struct obd_trans_info *oti,
 732                         struct lov_request_set **reqset)
 733 {
 734         struct lov_request_set *set;
 735         int rc = 0;
 736         ENTRY;
 737
 738         OBD_ALLOC(set, sizeof(*set));
 739         if (set == NULL)
 740                 RETURN(-ENOMEM);
 741         lov_init_set(set);
 742
 743         set->set_exp = exp;
 744         set->set_oi = oinfo;
 745         set->set_oi->oi_md = *lsmp;
 746         set->set_oi->oi_oa = src_oa;
 747         set->set_oti = oti;
 748         lov_get_reqset(set);
 749
 750         rc = qos_prep_create(exp, set);
 751         /* qos_shrink_lsm() may have allocated a new lsm */
 752         *lsmp = oinfo->oi_md;
 753         if (rc) {
 754                 lov_fini_create_set(set, lsmp);
 755                 lov_put_reqset(set);
 756         } else {
 757                 *reqset = set;
 758         }
 759         RETURN(rc);
 760 }
 761
 762 static int common_attr_done(struct lov_request_set *set)
 763 {
 764         cfs_list_t *pos;
 765         struct lov_request *req;
 766         struct obdo *tmp_oa;
 767         int rc = 0, attrset = 0;
 768         ENTRY;
 769
 770         LASSERT(set->set_oi != NULL);
 771
 772         if (set->set_oi->oi_oa == NULL)
 773                 RETURN(0);
 774
 775         if (!set->set_success)
 776                 RETURN(-EIO);
 777
 778         OBDO_ALLOC(tmp_oa);
 779         if (tmp_oa == NULL)
 780                 GOTO(out, rc = -ENOMEM);
 781
 782         cfs_list_for_each (pos, &set->set_list) {
 783                 req = cfs_list_entry(pos, struct lov_request, rq_link);
 784
 785                 if (!req->rq_complete || req->rq_rc)
 786                         continue;
 787                 if (req->rq_oi.oi_oa->o_valid == 0)   /* inactive stripe */
 788                         continue;
 789                 lov_merge_attrs(tmp_oa, req->rq_oi.oi_oa,
 790                                 req->rq_oi.oi_oa->o_valid,
 791                                 set->set_oi->oi_md, req->rq_stripe, &attrset);
 792         }
 793         if (!attrset) {
 794                 CERROR("No stripes had valid attrs\n");
 795                 rc = -EIO;
 796         }
 797         if ((set->set_oi->oi_oa->o_valid & OBD_MD_FLEPOCH) &&
 798             (set->set_oi->oi_md->lsm_stripe_count != attrset)) {
 799                 /* When we take attributes of some epoch, we require all the
 800                  * ost to be active. */
 801                 CERROR("Not all the stripes had valid attrs\n");
 802                 GOTO(out, rc = -EIO);
 803         }
 804
 805         tmp_oa->o_id = set->set_oi->oi_oa->o_id;
 806         memcpy(set->set_oi->oi_oa, tmp_oa, sizeof(*set->set_oi->oi_oa));
 807 out:
 808         if (tmp_oa)
 809                 OBDO_FREE(tmp_oa);
 810         RETURN(rc);
 811
 812 }
 813
 814 static int brw_done(struct lov_request_set *set)
 815 {
 816         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 817         struct lov_oinfo     *loi = NULL;
 818         cfs_list_t *pos;
 819         struct lov_request *req;
 820         ENTRY;
 821
 822         cfs_list_for_each (pos, &set->set_list) {
 823                 req = cfs_list_entry(pos, struct lov_request, rq_link);
 824
 825                 if (!req->rq_complete || req->rq_rc)
 826                         continue;
 827
 828                 loi = lsm->lsm_oinfo[req->rq_stripe];
 829
 830                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS)
 831                         loi->loi_lvb.lvb_blocks = req->rq_oi.oi_oa->o_blocks;
 832         }
 833
 834         RETURN(0);
 835 }
 836
 837 int lov_fini_brw_set(struct lov_request_set *set)
 838 {
 839         int rc = 0;
 840         ENTRY;
 841
 842         if (set == NULL)
 843                 RETURN(0);
 844         LASSERT(set->set_exp);
 845         if (set->set_completes) {
 846                 rc = brw_done(set);
 847                 /* FIXME update qos data here */
 848         }
 849         lov_put_reqset(set);
 850
 851         RETURN(rc);
 852 }
 853
 854 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
 855                      obd_count oa_bufs, struct brw_page *pga,
 856                      struct obd_trans_info *oti,
 857                      struct lov_request_set **reqset)
 858 {
 859         struct {
 860                 obd_count       index;
 861                 obd_count       count;
 862                 obd_count       off;
 863         } *info = NULL;
 864         struct lov_request_set *set;
 865         struct lov_obd *lov = &exp->exp_obd->u.lov;
 866         int rc = 0, i, shift;
 867         ENTRY;
 868
 869         OBD_ALLOC(set, sizeof(*set));
 870         if (set == NULL)
 871                 RETURN(-ENOMEM);
 872         lov_init_set(set);
 873
 874         set->set_exp = exp;
 875         set->set_oti = oti;
 876         set->set_oi = oinfo;
 877         set->set_oabufs = oa_bufs;
 878         OBD_ALLOC_LARGE(set->set_pga, oa_bufs * sizeof(*set->set_pga));
 879         if (!set->set_pga)
 880                 GOTO(out, rc = -ENOMEM);
 881
 882         OBD_ALLOC_LARGE(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 883         if (!info)
 884                 GOTO(out, rc = -ENOMEM);
 885
 886         /* calculate the page count for each stripe */
 887         for (i = 0; i < oa_bufs; i++) {
 888                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 889                 info[stripe].count++;
 890         }
 891
 892         /* alloc and initialize lov request */
 893         shift = 0;
 894         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++){
 895                 struct lov_oinfo *loi = NULL;
 896                 struct lov_request *req;
 897
 898                 if (info[i].count == 0)
 899                         continue;
 900
 901                 loi = oinfo->oi_md->lsm_oinfo[i];
 902                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 903                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 904                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 905                         GOTO(out, rc = -EIO);
 906                 }
 907
 908                 OBD_ALLOC(req, sizeof(*req));
 909                 if (req == NULL)
 910                         GOTO(out, rc = -ENOMEM);
 911
 912                 OBDO_ALLOC(req->rq_oi.oi_oa);
 913                 if (req->rq_oi.oi_oa == NULL) {
 914                         OBD_FREE(req, sizeof(*req));
 915                         GOTO(out, rc = -ENOMEM);
 916                 }
 917
 918                 if (oinfo->oi_oa) {
 919                         memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
 920                                sizeof(*req->rq_oi.oi_oa));
 921                 }
 922                 req->rq_oi.oi_oa->o_id = loi->loi_id;
 923                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
 924                 req->rq_oi.oi_oa->o_stripe_idx = i;
 925
 926                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 927                 OBD_ALLOC_LARGE(req->rq_oi.oi_md, req->rq_buflen);
 928                 if (req->rq_oi.oi_md == NULL) {
 929                         OBDO_FREE(req->rq_oi.oi_oa);
 930                         OBD_FREE(req, sizeof(*req));
 931                         GOTO(out, rc = -ENOMEM);
 932                 }
 933
 934                 req->rq_idx = loi->loi_ost_idx;
 935                 req->rq_stripe = i;
 936
 937                 /* XXX LOV STACKING */
 938                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 939                 req->rq_oi.oi_md->lsm_object_seq = loi->loi_seq;
 940                 req->rq_oabufs = info[i].count;
 941                 req->rq_pgaidx = shift;
 942                 shift += req->rq_oabufs;
 943
 944                 /* remember the index for sort brw_page array */
 945                 info[i].index = req->rq_pgaidx;
 946
 947                 req->rq_oi.oi_capa = oinfo->oi_capa;
 948
 949                 lov_set_add_req(req, set);
 950         }
 951         if (!set->set_count)
 952                 GOTO(out, rc = -EIO);
 953
 954         /* rotate & sort the brw_page array */
 955         for (i = 0; i < oa_bufs; i++) {
 956                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 957
 958                 shift = info[stripe].index + info[stripe].off;
 959                 LASSERT(shift < oa_bufs);
 960                 set->set_pga[shift] = pga[i];
 961                 lov_stripe_offset(oinfo->oi_md, pga[i].off, stripe,
 962                                   &set->set_pga[shift].off);
 963                 info[stripe].off++;
 964         }
 965 out:
 966         if (info)
 967                 OBD_FREE_LARGE(info,
 968                                sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 969
 970         if (rc == 0)
 971                 *reqset = set;
 972         else
 973                 lov_fini_brw_set(set);
 974
 975         RETURN(rc);
 976 }
 977
 978 int lov_fini_getattr_set(struct lov_request_set *set)
 979 {
 980         int rc = 0;
 981         ENTRY;
 982
 983         if (set == NULL)
 984                 RETURN(0);
 985         LASSERT(set->set_exp);
 986         if (set->set_completes)
 987                 rc = common_attr_done(set);
 988
 989         lov_put_reqset(set);
 990
 991         RETURN(rc);
 992 }
 993
 994 /* The callback for osc_getattr_async that finilizes a request info when a
 995  * response is received. */
 996 static int cb_getattr_update(void *cookie, int rc)
 997 {
 998         struct obd_info *oinfo = cookie;
 999         struct lov_request *lovreq;
1000         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1001         return lov_update_common_set(lovreq->rq_rqset, lovreq, rc);
1002 }
1003
1004 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
1005                          struct lov_request_set **reqset)
1006 {
1007         struct lov_request_set *set;
1008         struct lov_obd *lov = &exp->exp_obd->u.lov;
1009         int rc = 0, i;
1010         ENTRY;
1011
1012         OBD_ALLOC(set, sizeof(*set));
1013         if (set == NULL)
1014                 RETURN(-ENOMEM);
1015         lov_init_set(set);
1016
1017         set->set_exp = exp;
1018         set->set_oi = oinfo;
1019
1020         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1021                 struct lov_oinfo *loi;
1022                 struct lov_request *req;
1023
1024                 loi = oinfo->oi_md->lsm_oinfo[i];
1025                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1026                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1027                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1028                         if (oinfo->oi_oa->o_valid & OBD_MD_FLEPOCH)
1029                                 /* SOM requires all the OSTs to be active. */
1030                                 GOTO(out_set, rc = -EIO);
1031                         continue;
1032                 }
1033
1034                 OBD_ALLOC(req, sizeof(*req));
1035                 if (req == NULL)
1036                         GOTO(out_set, rc = -ENOMEM);
1037
1038                 req->rq_stripe = i;
1039                 req->rq_idx = loi->loi_ost_idx;
1040
1041                 OBDO_ALLOC(req->rq_oi.oi_oa);
1042                 if (req->rq_oi.oi_oa == NULL) {
1043                         OBD_FREE(req, sizeof(*req));
1044                         GOTO(out_set, rc = -ENOMEM);
1045                 }
1046                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1047                        sizeof(*req->rq_oi.oi_oa));
1048                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1049                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
1050                 req->rq_oi.oi_cb_up = cb_getattr_update;
1051                 req->rq_oi.oi_capa = oinfo->oi_capa;
1052
1053                 lov_set_add_req(req, set);
1054         }
1055         if (!set->set_count)
1056                 GOTO(out_set, rc = -EIO);
1057         *reqset = set;
1058         RETURN(rc);
1059 out_set:
1060         lov_fini_getattr_set(set);
1061         RETURN(rc);
1062 }
1063
1064 int lov_fini_destroy_set(struct lov_request_set *set)
1065 {
1066         ENTRY;
1067
1068         if (set == NULL)
1069                 RETURN(0);
1070         LASSERT(set->set_exp);
1071         if (set->set_completes) {
1072                 /* FIXME update qos data here */
1073         }
1074
1075         lov_put_reqset(set);
1076
1077         RETURN(0);
1078 }
1079
1080 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
1081                          struct obdo *src_oa, struct lov_stripe_md *lsm,
1082                          struct obd_trans_info *oti,
1083                          struct lov_request_set **reqset)
1084 {
1085         struct lov_request_set *set;
1086         struct lov_obd *lov = &exp->exp_obd->u.lov;
1087         int rc = 0, i;
1088         ENTRY;
1089
1090         OBD_ALLOC(set, sizeof(*set));
1091         if (set == NULL)
1092                 RETURN(-ENOMEM);
1093         lov_init_set(set);
1094
1095         set->set_exp = exp;
1096         set->set_oi = oinfo;
1097         set->set_oi->oi_md = lsm;
1098         set->set_oi->oi_oa = src_oa;
1099         set->set_oti = oti;
1100         if (oti != NULL && src_oa->o_valid & OBD_MD_FLCOOKIE)
1101                 set->set_cookies = oti->oti_logcookies;
1102
1103         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1104                 struct lov_oinfo *loi;
1105                 struct lov_request *req;
1106
1107                 loi = lsm->lsm_oinfo[i];
1108                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1109                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1110                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1111                         continue;
1112                 }
1113
1114                 OBD_ALLOC(req, sizeof(*req));
1115                 if (req == NULL)
1116                         GOTO(out_set, rc = -ENOMEM);
1117
1118                 req->rq_stripe = i;
1119                 req->rq_idx = loi->loi_ost_idx;
1120
1121                 OBDO_ALLOC(req->rq_oi.oi_oa);
1122                 if (req->rq_oi.oi_oa == NULL) {
1123                         OBD_FREE(req, sizeof(*req));
1124                         GOTO(out_set, rc = -ENOMEM);
1125                 }
1126                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1127                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1128                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
1129                 lov_set_add_req(req, set);
1130         }
1131         if (!set->set_count)
1132                 GOTO(out_set, rc = -EIO);
1133         *reqset = set;
1134         RETURN(rc);
1135 out_set:
1136         lov_fini_destroy_set(set);
1137         RETURN(rc);
1138 }
1139
1140 int lov_fini_setattr_set(struct lov_request_set *set)
1141 {
1142         int rc = 0;
1143         ENTRY;
1144
1145         if (set == NULL)
1146                 RETURN(0);
1147         LASSERT(set->set_exp);
1148         if (set->set_completes) {
1149                 rc = common_attr_done(set);
1150                 /* FIXME update qos data here */
1151         }
1152
1153         lov_put_reqset(set);
1154         RETURN(rc);
1155 }
1156
1157 int lov_update_setattr_set(struct lov_request_set *set,
1158                            struct lov_request *req, int rc)
1159 {
1160         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1161         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1162         ENTRY;
1163
1164         lov_update_set(set, req, rc);
1165
1166         /* grace error on inactive ost */
1167         if (rc && !(lov->lov_tgts[req->rq_idx] &&
1168                     lov->lov_tgts[req->rq_idx]->ltd_active))
1169                 rc = 0;
1170
1171         if (rc == 0) {
1172                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCTIME)
1173                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_ctime =
1174                                 req->rq_oi.oi_oa->o_ctime;
1175                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLMTIME)
1176                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_mtime =
1177                                 req->rq_oi.oi_oa->o_mtime;
1178                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLATIME)
1179                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_atime =
1180                                 req->rq_oi.oi_oa->o_atime;
1181         }
1182
1183         RETURN(rc);
1184 }
1185
1186 /* The callback for osc_setattr_async that finilizes a request info when a
1187  * response is received. */
1188 static int cb_setattr_update(void *cookie, int rc)
1189 {
1190         struct obd_info *oinfo = cookie;
1191         struct lov_request *lovreq;
1192         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1193         return lov_update_setattr_set(lovreq->rq_rqset, lovreq, rc);
1194 }
1195
1196 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
1197                          struct obd_trans_info *oti,
1198                          struct lov_request_set **reqset)
1199 {
1200         struct lov_request_set *set;
1201         struct lov_obd *lov = &exp->exp_obd->u.lov;
1202         int rc = 0, i;
1203         ENTRY;
1204
1205         OBD_ALLOC(set, sizeof(*set));
1206         if (set == NULL)
1207                 RETURN(-ENOMEM);
1208         lov_init_set(set);
1209
1210         set->set_exp = exp;
1211         set->set_oti = oti;
1212         set->set_oi = oinfo;
1213         if (oti != NULL && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
1214                 set->set_cookies = oti->oti_logcookies;
1215
1216         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1217                 struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
1218                 struct lov_request *req;
1219
1220                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1221                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1222                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1223                         continue;
1224                 }
1225
1226                 OBD_ALLOC(req, sizeof(*req));
1227                 if (req == NULL)
1228                         GOTO(out_set, rc = -ENOMEM);
1229                 req->rq_stripe = i;
1230                 req->rq_idx = loi->loi_ost_idx;
1231
1232                 OBDO_ALLOC(req->rq_oi.oi_oa);
1233                 if (req->rq_oi.oi_oa == NULL) {
1234                         OBD_FREE(req, sizeof(*req));
1235                         GOTO(out_set, rc = -ENOMEM);
1236                 }
1237                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1238                        sizeof(*req->rq_oi.oi_oa));
1239                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1240                 req->rq_oi.oi_oa->o_seq= loi->loi_seq;
1241                 req->rq_oi.oi_oa->o_stripe_idx = i;
1242                 req->rq_oi.oi_cb_up = cb_setattr_update;
1243                 req->rq_oi.oi_capa = oinfo->oi_capa;
1244
1245                 if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE) {
1246                         int off = lov_stripe_offset(oinfo->oi_md,
1247                                                     oinfo->oi_oa->o_size, i,
1248                                                     &req->rq_oi.oi_oa->o_size);
1249
1250                         if (off < 0 && req->rq_oi.oi_oa->o_size)
1251                                 req->rq_oi.oi_oa->o_size--;
1252
1253                         CDEBUG(D_INODE, "stripe %d has size "LPU64"/"LPU64"\n",
1254                                i, req->rq_oi.oi_oa->o_size,
1255                                oinfo->oi_oa->o_size);
1256                 }
1257                 lov_set_add_req(req, set);
1258         }
1259         if (!set->set_count)
1260                 GOTO(out_set, rc = -EIO);
1261         *reqset = set;
1262         RETURN(rc);
1263 out_set:
1264         lov_fini_setattr_set(set);
1265         RETURN(rc);
1266 }
1267
1268 int lov_fini_punch_set(struct lov_request_set *set)
1269 {
1270         int rc = 0;
1271         ENTRY;
1272
1273         if (set == NULL)
1274                 RETURN(0);
1275         LASSERT(set->set_exp);
1276         if (set->set_completes) {
1277                 rc = -EIO;
1278                 /* FIXME update qos data here */
1279                 if (set->set_success)
1280                         rc = common_attr_done(set);
1281         }
1282
1283         lov_put_reqset(set);
1284
1285         RETURN(rc);
1286 }
1287
1288 int lov_update_punch_set(struct lov_request_set *set,
1289                          struct lov_request *req, int rc)
1290 {
1291         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1292         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1293         ENTRY;
1294
1295         lov_update_set(set, req, rc);
1296
1297         /* grace error on inactive ost */
1298         if (rc && !lov->lov_tgts[req->rq_idx]->ltd_active)
1299                 rc = 0;
1300
1301         if (rc == 0) {
1302                 lov_stripe_lock(lsm);
1303                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS) {
1304                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_blocks =
1305                                 req->rq_oi.oi_oa->o_blocks;
1306                 }
1307
1308                 /* Do we need to update lvb_size here? It needn't because
1309                  * it have been done in ll_truncate(). -jay */
1310                 lov_stripe_unlock(lsm);
1311         }
1312
1313         RETURN(rc);
1314 }
1315
1316 /* The callback for osc_punch that finilizes a request info when a response
1317  * is received. */
1318 static int cb_update_punch(void *cookie, int rc)
1319 {
1320         struct obd_info *oinfo = cookie;
1321         struct lov_request *lovreq;
1322         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1323         return lov_update_punch_set(lovreq->rq_rqset, lovreq, rc);
1324 }
1325
1326 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
1327                        struct obd_trans_info *oti,
1328                        struct lov_request_set **reqset)
1329 {
1330         struct lov_request_set *set;
1331         struct lov_obd *lov = &exp->exp_obd->u.lov;
1332         int rc = 0, i;
1333         ENTRY;
1334
1335         OBD_ALLOC(set, sizeof(*set));
1336         if (set == NULL)
1337                 RETURN(-ENOMEM);
1338         lov_init_set(set);
1339
1340         set->set_oi = oinfo;
1341         set->set_exp = exp;
1342
1343         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1344                 struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
1345                 struct lov_request *req;
1346                 obd_off rs, re;
1347
1348                 if (!lov_stripe_intersects(oinfo->oi_md, i,
1349                                            oinfo->oi_policy.l_extent.start,
1350                                            oinfo->oi_policy.l_extent.end,
1351                                            &rs, &re))
1352                         continue;
1353
1354                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1355                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1356                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1357                         GOTO(out_set, rc = -EIO);
1358                 }
1359
1360                 OBD_ALLOC(req, sizeof(*req));
1361                 if (req == NULL)
1362                         GOTO(out_set, rc = -ENOMEM);
1363                 req->rq_stripe = i;
1364                 req->rq_idx = loi->loi_ost_idx;
1365
1366                 OBDO_ALLOC(req->rq_oi.oi_oa);
1367                 if (req->rq_oi.oi_oa == NULL) {
1368                         OBD_FREE(req, sizeof(*req));
1369                         GOTO(out_set, rc = -ENOMEM);
1370                 }
1371                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1372                        sizeof(*req->rq_oi.oi_oa));
1373                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1374                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
1375                 req->rq_oi.oi_oa->o_valid |= OBD_MD_FLGROUP;
1376
1377                 req->rq_oi.oi_oa->o_stripe_idx = i;
1378                 req->rq_oi.oi_cb_up = cb_update_punch;
1379
1380                 req->rq_oi.oi_policy.l_extent.start = rs;
1381                 req->rq_oi.oi_policy.l_extent.end = re;
1382                 req->rq_oi.oi_policy.l_extent.gid = -1;
1383
1384                 req->rq_oi.oi_capa = oinfo->oi_capa;
1385
1386                 lov_set_add_req(req, set);
1387         }
1388         if (!set->set_count)
1389                 GOTO(out_set, rc = -EIO);
1390         *reqset = set;
1391         RETURN(rc);
1392 out_set:
1393         lov_fini_punch_set(set);
1394         RETURN(rc);
1395 }
1396
1397 int lov_fini_sync_set(struct lov_request_set *set)
1398 {
1399         int rc = 0;
1400         ENTRY;
1401
1402         if (set == NULL)
1403                 RETURN(0);
1404         LASSERT(set->set_exp);
1405         if (set->set_completes) {
1406                 if (!set->set_success)
1407                         rc = -EIO;
1408                 /* FIXME update qos data here */
1409         }
1410
1411         lov_put_reqset(set);
1412
1413         RETURN(rc);
1414 }
1415
1416 /* The callback for osc_sync that finilizes a request info when a
1417  * response is recieved. */
1418 static int cb_sync_update(void *cookie, int rc)
1419 {
1420         struct obd_info *oinfo = cookie;
1421         struct lov_request *lovreq;
1422
1423         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1424         return lov_update_common_set(lovreq->rq_rqset, lovreq, rc);
1425 }
1426
1427 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *oinfo,
1428                       obd_off start, obd_off end,
1429                       struct lov_request_set **reqset)
1430 {
1431         struct lov_request_set *set;
1432         struct lov_obd *lov = &exp->exp_obd->u.lov;
1433         int rc = 0, i;
1434         ENTRY;
1435
1436         OBD_ALLOC_PTR(set);
1437         if (set == NULL)
1438                 RETURN(-ENOMEM);
1439         lov_init_set(set);
1440
1441         set->set_exp = exp;
1442         set->set_oi = oinfo;
1443
1444         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1445                 struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
1446                 struct lov_request *req;
1447                 obd_off rs, re;
1448
1449                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1450                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1451                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1452                         continue;
1453                 }
1454
1455                 if (!lov_stripe_intersects(oinfo->oi_md, i, start, end, &rs,
1456                                            &re))
1457                         continue;
1458
1459                 OBD_ALLOC_PTR(req);
1460                 if (req == NULL)
1461                         GOTO(out_set, rc = -ENOMEM);
1462                 req->rq_stripe = i;
1463                 req->rq_idx = loi->loi_ost_idx;
1464
1465                 OBDO_ALLOC(req->rq_oi.oi_oa);
1466                 if (req->rq_oi.oi_oa == NULL) {
1467                         OBD_FREE(req, sizeof(*req));
1468                         GOTO(out_set, rc = -ENOMEM);
1469                 }
1470                 *req->rq_oi.oi_oa = *oinfo->oi_oa;
1471                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1472                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
1473                 req->rq_oi.oi_oa->o_stripe_idx = i;
1474
1475                 req->rq_oi.oi_policy.l_extent.start = rs;
1476                 req->rq_oi.oi_policy.l_extent.end = re;
1477                 req->rq_oi.oi_policy.l_extent.gid = -1;
1478                 req->rq_oi.oi_cb_up = cb_sync_update;
1479
1480                 lov_set_add_req(req, set);
1481         }
1482         if (!set->set_count)
1483                 GOTO(out_set, rc = -EIO);
1484         *reqset = set;
1485         RETURN(rc);
1486 out_set:
1487         lov_fini_sync_set(set);
1488         RETURN(rc);
1489 }
1490
1491 #define LOV_U64_MAX ((__u64)~0ULL)
1492 #define LOV_SUM_MAX(tot, add)                                           \
1493         do {                                                            \
1494                 if ((tot) + (add) < (tot))                              \
1495                         (tot) = LOV_U64_MAX;                            \
1496                 else                                                    \
1497                         (tot) += (add);                                 \
1498         } while(0)
1499
1500 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,int success)
1501 {
1502         ENTRY;
1503
1504         if (success) {
1505                 __u32 expected_stripes = lov_get_stripecnt(&obd->u.lov, 0);
1506
1507                 if (osfs->os_files != LOV_U64_MAX)
1508                         do_div(osfs->os_files, expected_stripes);
1509                 if (osfs->os_ffree != LOV_U64_MAX)
1510                         do_div(osfs->os_ffree, expected_stripes);
1511
1512                 cfs_spin_lock(&obd->obd_osfs_lock);
1513                 memcpy(&obd->obd_osfs, osfs, sizeof(*osfs));
1514                 obd->obd_osfs_age = cfs_time_current_64();
1515                 cfs_spin_unlock(&obd->obd_osfs_lock);
1516                 RETURN(0);
1517         }
1518
1519         RETURN(-EIO);
1520 }
1521
1522 int lov_fini_statfs_set(struct lov_request_set *set)
1523 {
1524         int rc = 0;
1525         ENTRY;
1526
1527         if (set == NULL)
1528                 RETURN(0);
1529
1530         if (set->set_completes) {
1531                 rc = lov_fini_statfs(set->set_obd, set->set_oi->oi_osfs,
1532                                      set->set_success);
1533         }
1534         lov_put_reqset(set);
1535         RETURN(rc);
1536 }
1537
1538 void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
1539                        int success)
1540 {
1541         int shift = 0, quit = 0;
1542         __u64 tmp;
1543
1544         if (success == 0) {
1545                 memcpy(osfs, lov_sfs, sizeof(*lov_sfs));
1546         } else {
1547                 if (osfs->os_bsize != lov_sfs->os_bsize) {
1548                         /* assume all block sizes are always powers of 2 */
1549                         /* get the bits difference */
1550                         tmp = osfs->os_bsize | lov_sfs->os_bsize;
1551                         for (shift = 0; shift <= 64; ++shift) {
1552                                 if (tmp & 1) {
1553                                         if (quit)
1554                                                 break;
1555                                         else
1556                                                 quit = 1;
1557                                         shift = 0;
1558                                 }
1559                                 tmp >>= 1;
1560                         }
1561                 }
1562
1563                 if (osfs->os_bsize < lov_sfs->os_bsize) {
1564                         osfs->os_bsize = lov_sfs->os_bsize;
1565
1566                         osfs->os_bfree  >>= shift;
1567                         osfs->os_bavail >>= shift;
1568                         osfs->os_blocks >>= shift;
1569                 } else if (shift != 0) {
1570                         lov_sfs->os_bfree  >>= shift;
1571                         lov_sfs->os_bavail >>= shift;
1572                         lov_sfs->os_blocks >>= shift;
1573                 }
1574 #ifdef MIN_DF
1575                 /* Sandia requested that df (and so, statfs) only
1576                    returned minimal available space on
1577                    a single OST, so people would be able to
1578                    write this much data guaranteed. */
1579                 if (osfs->os_bavail > lov_sfs->os_bavail) {
1580                         /* Presumably if new bavail is smaller,
1581                            new bfree is bigger as well */
1582                         osfs->os_bfree = lov_sfs->os_bfree;
1583                         osfs->os_bavail = lov_sfs->os_bavail;
1584                 }
1585 #else
1586                 osfs->os_bfree += lov_sfs->os_bfree;
1587                 osfs->os_bavail += lov_sfs->os_bavail;
1588 #endif
1589                 osfs->os_blocks += lov_sfs->os_blocks;
1590                 /* XXX not sure about this one - depends on policy.
1591                  *   - could be minimum if we always stripe on all OBDs
1592                  *     (but that would be wrong for any other policy,
1593                  *     if one of the OBDs has no more objects left)
1594                  *   - could be sum if we stripe whole objects
1595                  *   - could be average, just to give a nice number
1596                  *
1597                  * To give a "reasonable" (if not wholly accurate)
1598                  * number, we divide the total number of free objects
1599                  * by expected stripe count (watch out for overflow).
1600                  */
1601                 LOV_SUM_MAX(osfs->os_files, lov_sfs->os_files);
1602                 LOV_SUM_MAX(osfs->os_ffree, lov_sfs->os_ffree);
1603         }
1604 }
1605
1606 /* The callback for osc_statfs_async that finilizes a request info when a
1607  * response is received. */
1608 static int cb_statfs_update(void *cookie, int rc)
1609 {
1610         struct obd_info *oinfo = cookie;
1611         struct lov_request *lovreq;
1612         struct obd_statfs *osfs, *lov_sfs;
1613         struct lov_obd *lov;
1614         struct lov_tgt_desc *tgt;
1615         struct obd_device *lovobd, *tgtobd;
1616         int success;
1617         ENTRY;
1618
1619         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1620         lovobd = lovreq->rq_rqset->set_obd;
1621         lov = &lovobd->u.lov;
1622         osfs = lovreq->rq_rqset->set_oi->oi_osfs;
1623         lov_sfs = oinfo->oi_osfs;
1624         success = lovreq->rq_rqset->set_success;
1625         /* XXX: the same is done in lov_update_common_set, however
1626            lovset->set_exp is not initialized. */
1627         lov_update_set(lovreq->rq_rqset, lovreq, rc);
1628         if (rc)
1629                 GOTO(out, rc);
1630
1631         obd_getref(lovobd);
1632         tgt = lov->lov_tgts[lovreq->rq_idx];
1633         if (!tgt || !tgt->ltd_active)
1634                 GOTO(out_update, rc);
1635
1636         tgtobd = class_exp2obd(tgt->ltd_exp);
1637         cfs_spin_lock(&tgtobd->obd_osfs_lock);
1638         memcpy(&tgtobd->obd_osfs, lov_sfs, sizeof(*lov_sfs));
1639         if ((oinfo->oi_flags & OBD_STATFS_FROM_CACHE) == 0)
1640                 tgtobd->obd_osfs_age = cfs_time_current_64();
1641         cfs_spin_unlock(&tgtobd->obd_osfs_lock);
1642
1643 out_update:
1644         lov_update_statfs(osfs, lov_sfs, success);
1645         qos_update(lov);
1646         obd_putref(lovobd);
1647
1648 out:
1649         if (lovreq->rq_rqset->set_oi->oi_flags & OBD_STATFS_PTLRPCD &&
1650             lov_finished_set(lovreq->rq_rqset)) {
1651                lov_statfs_interpret(NULL, lovreq->rq_rqset,
1652                                     lovreq->rq_rqset->set_success !=
1653                                                   lovreq->rq_rqset->set_count);
1654                qos_statfs_done(lov);
1655         }
1656
1657         RETURN(0);
1658 }
1659
1660 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
1661                         struct lov_request_set **reqset)
1662 {
1663         struct lov_request_set *set;
1664         struct lov_obd *lov = &obd->u.lov;
1665         int rc = 0, i;
1666         ENTRY;
1667
1668         OBD_ALLOC(set, sizeof(*set));
1669         if (set == NULL)
1670                 RETURN(-ENOMEM);
1671         lov_init_set(set);
1672
1673         set->set_obd = obd;
1674         set->set_oi = oinfo;
1675
1676         /* We only get block data from the OBD */
1677         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
1678                 struct lov_request *req;
1679
1680                 if (!lov->lov_tgts[i] || (!lov->lov_tgts[i]->ltd_active
1681                                           && (oinfo->oi_flags & OBD_STATFS_NODELAY))) {
1682                         CDEBUG(D_HA, "lov idx %d inactive\n", i);
1683                         continue;
1684                 }
1685
1686                 /* skip targets that have been explicitely disabled by the
1687                  * administrator */
1688                 if (!lov->lov_tgts[i]->ltd_exp) {
1689                         CDEBUG(D_HA, "lov idx %d administratively disabled\n", i);
1690                         continue;
1691                 }
1692
1693                 OBD_ALLOC(req, sizeof(*req));
1694                 if (req == NULL)
1695                         GOTO(out_set, rc = -ENOMEM);
1696
1697                 OBD_ALLOC(req->rq_oi.oi_osfs, sizeof(*req->rq_oi.oi_osfs));
1698                 if (req->rq_oi.oi_osfs == NULL) {
1699                         OBD_FREE(req, sizeof(*req));
1700                         GOTO(out_set, rc = -ENOMEM);
1701                 }
1702
1703                 req->rq_idx = i;
1704                 req->rq_oi.oi_cb_up = cb_statfs_update;
1705                 req->rq_oi.oi_flags = oinfo->oi_flags;
1706
1707                 lov_set_add_req(req, set);
1708         }
1709         if (!set->set_count)
1710                 GOTO(out_set, rc = -EIO);
1711         *reqset = set;
1712         RETURN(rc);
1713 out_set:
1714         lov_fini_statfs_set(set);
1715         RETURN(rc);
1716 }