lustre/lov/lov_request.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of the Lustre file system, http://www.lustre.org
   7  *   Lustre is a trademark of Cluster File Systems, Inc.
   8  *
   9  *   You may have signed or agreed to another license before downloading
  10  *   this software.  If so, you are bound by the terms and conditions
  11  *   of that agreement, and the following does not apply to you.  See the
  12  *   LICENSE file included with this distribution for more information.
  13  *
  14  *   If you did not agree to a different license, then this copy of Lustre
  15  *   is open source software; you can redistribute it and/or modify it
  16  *   under the terms of version 2 of the GNU General Public License as
  17  *   published by the Free Software Foundation.
  18  *
  19  *   In either case, Lustre is distributed in the hope that it will be
  20  *   useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  21  *   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *   license text for more details.
  23  */
  24
  25 #ifndef EXPORT_SYMTAB
  26 # define EXPORT_SYMTAB
  27 #endif
  28 #define DEBUG_SUBSYSTEM S_LOV
  29
  30 #ifdef __KERNEL__
  31 #include <libcfs/libcfs.h>
  32 #else
  33 #include <liblustre.h>
  34 #endif
  35
  36 #include <obd_class.h>
  37 #include <obd_lov.h>
  38 #include <lustre/lustre_idl.h>
  39
  40 #include "lov_internal.h"
  41
  42 static void lov_init_set(struct lov_request_set *set)
  43 {
  44         set->set_count = 0;
  45         set->set_completes = 0;
  46         set->set_success = 0;
  47         set->set_cookies = 0;
  48         CFS_INIT_LIST_HEAD(&set->set_list);
  49         atomic_set(&set->set_refcount, 1);
  50 }
  51
  52 static void lov_finish_set(struct lov_request_set *set)
  53 {
  54         struct list_head *pos, *n;
  55         ENTRY;
  56
  57         LASSERT(set);
  58         list_for_each_safe(pos, n, &set->set_list) {
  59                 struct lov_request *req = list_entry(pos, struct lov_request,
  60                                                      rq_link);
  61                 list_del_init(&req->rq_link);
  62
  63                 if (req->rq_oi.oi_oa)
  64                         OBDO_FREE(req->rq_oi.oi_oa);
  65                 if (req->rq_oi.oi_md)
  66                         OBD_FREE(req->rq_oi.oi_md, req->rq_buflen);
  67                 if (req->rq_oi.oi_osfs)
  68                         OBD_FREE(req->rq_oi.oi_osfs,
  69                                  sizeof(*req->rq_oi.oi_osfs));
  70                 OBD_FREE(req, sizeof(*req));
  71         }
  72
  73         if (set->set_pga) {
  74                 int len = set->set_oabufs * sizeof(*set->set_pga);
  75                 OBD_FREE(set->set_pga, len);
  76         }
  77         if (set->set_lockh)
  78                 lov_llh_put(set->set_lockh);
  79
  80         OBD_FREE(set, sizeof(*set));
  81         EXIT;
  82 }
  83
  84 void lov_update_set(struct lov_request_set *set,
  85                     struct lov_request *req, int rc)
  86 {
  87         req->rq_complete = 1;
  88         req->rq_rc = rc;
  89
  90         set->set_completes++;
  91         if (rc == 0)
  92                 set->set_success++;
  93 }
  94
  95 int lov_update_common_set(struct lov_request_set *set,
  96                           struct lov_request *req, int rc)
  97 {
  98         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
  99         ENTRY;
 100
 101         lov_update_set(set, req, rc);
 102
 103         /* grace error on inactive ost */
 104         if (rc && !(lov->lov_tgts[req->rq_idx] &&
 105                     lov->lov_tgts[req->rq_idx]->ltd_active))
 106                 rc = 0;
 107
 108         /* FIXME in raid1 regime, should return 0 */
 109         RETURN(rc);
 110 }
 111
 112 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set)
 113 {
 114         list_add_tail(&req->rq_link, &set->set_list);
 115         set->set_count++;
 116 }
 117
 118 int lov_update_enqueue_set(struct lov_request *req, __u32 mode, int rc)
 119 {
 120         struct lov_request_set *set = req->rq_rqset;
 121         struct lustre_handle *lov_lockhp;
 122         struct lov_oinfo *loi;
 123         ENTRY;
 124
 125         LASSERT(set != NULL);
 126         LASSERT(set->set_oi != NULL);
 127
 128         lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
 129         loi = set->set_oi->oi_md->lsm_oinfo[req->rq_stripe];
 130
 131         /* XXX LOV STACKING: OSC gets a copy, created in lov_prep_enqueue_set
 132          * and that copy can be arbitrarily out of date.
 133          *
 134          * The LOV API is due for a serious rewriting anyways, and this
 135          * can be addressed then. */
 136
 137         if (rc == ELDLM_OK) {
 138                 struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
 139                 __u64 tmp;
 140
 141                 LASSERT(lock != NULL);
 142                 lov_stripe_lock(set->set_oi->oi_md);
 143                 loi->loi_lvb = req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb;
 144                 tmp = loi->loi_lvb.lvb_size;
 145                 /* Extend KMS up to the end of this lock and no further
 146                  * A lock on [x,y] means a KMS of up to y + 1 bytes! */
 147                 if (tmp > lock->l_policy_data.l_extent.end)
 148                         tmp = lock->l_policy_data.l_extent.end + 1;
 149                 if (tmp >= loi->loi_kms) {
 150                         LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64
 151                                    ", kms="LPU64, loi->loi_lvb.lvb_size, tmp);
 152                         loi->loi_kms = tmp;
 153                         loi->loi_kms_valid = 1;
 154                 } else {
 155                         LDLM_DEBUG(lock, "lock acquired, setting rss="
 156                                    LPU64"; leaving kms="LPU64", end="LPU64,
 157                                    loi->loi_lvb.lvb_size, loi->loi_kms,
 158                                    lock->l_policy_data.l_extent.end);
 159                 }
 160                 lov_stripe_unlock(set->set_oi->oi_md);
 161                 ldlm_lock_allow_match(lock);
 162                 LDLM_LOCK_PUT(lock);
 163         } else if ((rc == ELDLM_LOCK_ABORTED) &&
 164                    (set->set_oi->oi_flags & LDLM_FL_HAS_INTENT)) {
 165                 memset(lov_lockhp, 0, sizeof(*lov_lockhp));
 166                 lov_stripe_lock(set->set_oi->oi_md);
 167                 loi->loi_lvb = req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb;
 168                 lov_stripe_unlock(set->set_oi->oi_md);
 169                 CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
 170                        " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms);
 171                 rc = ELDLM_OK;
 172         } else {
 173                 struct obd_export *exp = set->set_exp;
 174                 struct lov_obd *lov = &exp->exp_obd->u.lov;
 175
 176                 memset(lov_lockhp, 0, sizeof(*lov_lockhp));
 177                 if (lov->lov_tgts[req->rq_idx] &&
 178                     lov->lov_tgts[req->rq_idx]->ltd_active) {
 179                         /* -EUSERS used by OST to report file contention */
 180                         if (rc != -EINTR && rc != -EUSERS)
 181                                 CERROR("enqueue objid "LPX64" subobj "
 182                                        LPX64" on OST idx %d: rc %d\n",
 183                                        set->set_oi->oi_md->lsm_object_id,
 184                                        loi->loi_id, loi->loi_ost_idx, rc);
 185                 } else {
 186                         rc = ELDLM_OK;
 187                 }
 188         }
 189         lov_update_set(set, req, rc);
 190         RETURN(rc);
 191 }
 192
 193 /* The callback for osc_enqueue that updates lov info for every OSC request. */
 194 static int cb_update_enqueue(struct obd_info *oinfo, int rc)
 195 {
 196         struct ldlm_enqueue_info *einfo;
 197         struct lov_request *lovreq;
 198
 199         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 200         einfo = lovreq->rq_rqset->set_ei;
 201         return lov_update_enqueue_set(lovreq, einfo->ei_mode, rc);
 202 }
 203
 204 static int enqueue_done(struct lov_request_set *set, __u32 mode)
 205 {
 206         struct lov_request *req;
 207         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 208         int rc = 0;
 209         ENTRY;
 210
 211         /* enqueue/match success, just return */
 212         if (set->set_completes && set->set_completes == set->set_success)
 213                 RETURN(0);
 214
 215         /* cancel enqueued/matched locks */
 216         list_for_each_entry(req, &set->set_list, rq_link) {
 217                 struct lustre_handle *lov_lockhp;
 218
 219                 if (!req->rq_complete || req->rq_rc)
 220                         continue;
 221
 222                 lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
 223                 LASSERT(lov_lockhp);
 224                 if (!lustre_handle_is_used(lov_lockhp))
 225                         continue;
 226
 227                 rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp,
 228                                 req->rq_oi.oi_md, mode, lov_lockhp);
 229                 if (rc && lov->lov_tgts[req->rq_idx] &&
 230                     lov->lov_tgts[req->rq_idx]->ltd_active)
 231                         CERROR("cancelling obdjid "LPX64" on OST "
 232                                "idx %d error: rc = %d\n",
 233                                req->rq_oi.oi_md->lsm_object_id,
 234                                req->rq_idx, rc);
 235         }
 236         if (set->set_lockh)
 237                 lov_llh_put(set->set_lockh);
 238         RETURN(rc);
 239 }
 240
 241 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
 242                          struct ptlrpc_request_set *rqset)
 243 {
 244         int ret = 0;
 245         ENTRY;
 246
 247         if (set == NULL)
 248                 RETURN(0);
 249         LASSERT(set->set_exp);
 250         /* Do enqueue_done only for sync requests and if any request
 251          * succeeded. */
 252         if (!rqset) {
 253                 if (rc)
 254                         set->set_completes = 0;
 255                 ret = enqueue_done(set, mode);
 256         } else if (set->set_lockh)
 257                 lov_llh_put(set->set_lockh);
 258
 259         if (atomic_dec_and_test(&set->set_refcount))
 260                 lov_finish_set(set);
 261
 262         RETURN(rc ? rc : ret);
 263 }
 264
 265 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
 266                          struct ldlm_enqueue_info *einfo,
 267                          struct lov_request_set **reqset)
 268 {
 269         struct lov_obd *lov = &exp->exp_obd->u.lov;
 270         struct lov_request_set *set;
 271         int i, rc = 0;
 272         struct lov_oinfo *loi;
 273         ENTRY;
 274
 275         OBD_ALLOC(set, sizeof(*set));
 276         if (set == NULL)
 277                 RETURN(-ENOMEM);
 278         lov_init_set(set);
 279
 280         set->set_exp = exp;
 281         set->set_oi = oinfo;
 282         set->set_ei = einfo;
 283         set->set_lockh = lov_llh_new(oinfo->oi_md);
 284         if (set->set_lockh == NULL)
 285                 GOTO(out_set, rc = -ENOMEM);
 286         oinfo->oi_lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 287
 288         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
 289                 struct lov_request *req;
 290                 obd_off start, end;
 291
 292                 loi = oinfo->oi_md->lsm_oinfo[i];
 293                 if (!lov_stripe_intersects(oinfo->oi_md, i,
 294                                            oinfo->oi_policy.l_extent.start,
 295                                            oinfo->oi_policy.l_extent.end,
 296                                            &start, &end))
 297                         continue;
 298
 299                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 300                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 301                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 302                         continue;
 303                 }
 304
 305                 OBD_ALLOC(req, sizeof(*req));
 306                 if (req == NULL)
 307                         GOTO(out_set, rc = -ENOMEM);
 308
 309                 req->rq_buflen = sizeof(*req->rq_oi.oi_md) +
 310                         sizeof(struct lov_oinfo *) +
 311                         sizeof(struct lov_oinfo);
 312                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 313                 if (req->rq_oi.oi_md == NULL) {
 314                         OBD_FREE(req, sizeof(*req));
 315                         GOTO(out_set, rc = -ENOMEM);
 316                 }
 317                 req->rq_oi.oi_md->lsm_oinfo[0] =
 318                         ((void *)req->rq_oi.oi_md) + sizeof(*req->rq_oi.oi_md) +
 319                         sizeof(struct lov_oinfo *);
 320
 321
 322                 req->rq_rqset = set;
 323                 /* Set lov request specific parameters. */
 324                 req->rq_oi.oi_lockh = set->set_lockh->llh_handles + i;
 325                 req->rq_oi.oi_cb_up = cb_update_enqueue;
 326                 req->rq_oi.oi_flags = oinfo->oi_flags;
 327
 328                 LASSERT(req->rq_oi.oi_lockh);
 329
 330                 req->rq_oi.oi_policy.l_extent.gid =
 331                         oinfo->oi_policy.l_extent.gid;
 332                 req->rq_oi.oi_policy.l_extent.start = start;
 333                 req->rq_oi.oi_policy.l_extent.end = end;
 334
 335                 req->rq_idx = loi->loi_ost_idx;
 336                 req->rq_stripe = i;
 337
 338                 /* XXX LOV STACKING: submd should be from the subobj */
 339                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 340                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 341                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_kms_valid =
 342                         loi->loi_kms_valid;
 343                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_kms = loi->loi_kms;
 344                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb = loi->loi_lvb;
 345
 346                 lov_set_add_req(req, set);
 347         }
 348         if (!set->set_count)
 349                 GOTO(out_set, rc = -EIO);
 350         *reqset = set;
 351         RETURN(0);
 352 out_set:
 353         lov_fini_enqueue_set(set, einfo->ei_mode, rc, NULL);
 354         RETURN(rc);
 355 }
 356
 357 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
 358                          int rc)
 359 {
 360         int ret = rc;
 361         ENTRY;
 362
 363         if (rc > 0)
 364                 ret = 0;
 365         else if (rc == 0)
 366                 ret = 1;
 367         lov_update_set(set, req, ret);
 368         RETURN(rc);
 369 }
 370
 371 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags)
 372 {
 373         int rc = 0;
 374         ENTRY;
 375
 376         if (set == NULL)
 377                 RETURN(0);
 378         LASSERT(set->set_exp);
 379         rc = enqueue_done(set, mode);
 380         if ((set->set_count == set->set_success) &&
 381             (flags & LDLM_FL_TEST_LOCK))
 382                 lov_llh_put(set->set_lockh);
 383
 384         if (atomic_dec_and_test(&set->set_refcount))
 385                 lov_finish_set(set);
 386
 387         RETURN(rc);
 388 }
 389
 390 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
 391                        struct lov_stripe_md *lsm, ldlm_policy_data_t *policy,
 392                        __u32 mode, struct lustre_handle *lockh,
 393                        struct lov_request_set **reqset)
 394 {
 395         struct lov_obd *lov = &exp->exp_obd->u.lov;
 396         struct lov_request_set *set;
 397         int i, rc = 0;
 398         struct lov_oinfo *loi;
 399         ENTRY;
 400
 401         OBD_ALLOC(set, sizeof(*set));
 402         if (set == NULL)
 403                 RETURN(-ENOMEM);
 404         lov_init_set(set);
 405
 406         set->set_exp = exp;
 407         set->set_oi = oinfo;
 408         set->set_oi->oi_md = lsm;
 409         set->set_lockh = lov_llh_new(lsm);
 410         if (set->set_lockh == NULL)
 411                 GOTO(out_set, rc = -ENOMEM);
 412         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 413
 414         for (i = 0; i < lsm->lsm_stripe_count; i++){
 415                 struct lov_request *req;
 416                 obd_off start, end;
 417
 418                 loi = lsm->lsm_oinfo[i];
 419                 if (!lov_stripe_intersects(lsm, i, policy->l_extent.start,
 420                                            policy->l_extent.end, &start, &end))
 421                         continue;
 422
 423                 /* FIXME raid1 should grace this error */
 424                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 425                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 426                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 427                         GOTO(out_set, rc = -EIO);
 428                 }
 429
 430                 OBD_ALLOC(req, sizeof(*req));
 431                 if (req == NULL)
 432                         GOTO(out_set, rc = -ENOMEM);
 433
 434                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 435                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 436                 if (req->rq_oi.oi_md == NULL) {
 437                         OBD_FREE(req, sizeof(*req));
 438                         GOTO(out_set, rc = -ENOMEM);
 439                 }
 440
 441                 req->rq_oi.oi_policy.l_extent.start = start;
 442                 req->rq_oi.oi_policy.l_extent.end = end;
 443                 req->rq_oi.oi_policy.l_extent.gid = policy->l_extent.gid;
 444
 445                 req->rq_idx = loi->loi_ost_idx;
 446                 req->rq_stripe = i;
 447
 448                 /* XXX LOV STACKING: submd should be from the subobj */
 449                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 450                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 451
 452                 lov_set_add_req(req, set);
 453         }
 454         if (!set->set_count)
 455                 GOTO(out_set, rc = -EIO);
 456         *reqset = set;
 457         RETURN(rc);
 458 out_set:
 459         lov_fini_match_set(set, mode, 0);
 460         RETURN(rc);
 461 }
 462
 463 int lov_fini_cancel_set(struct lov_request_set *set)
 464 {
 465         int rc = 0;
 466         ENTRY;
 467
 468         if (set == NULL)
 469                 RETURN(0);
 470
 471         LASSERT(set->set_exp);
 472         if (set->set_lockh)
 473                 lov_llh_put(set->set_lockh);
 474
 475         if (atomic_dec_and_test(&set->set_refcount))
 476                 lov_finish_set(set);
 477
 478         RETURN(rc);
 479 }
 480
 481 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
 482                         struct lov_stripe_md *lsm, __u32 mode,
 483                         struct lustre_handle *lockh,
 484                         struct lov_request_set **reqset)
 485 {
 486         struct lov_request_set *set;
 487         int i, rc = 0;
 488         struct lov_oinfo *loi;
 489         ENTRY;
 490
 491         OBD_ALLOC(set, sizeof(*set));
 492         if (set == NULL)
 493                 RETURN(-ENOMEM);
 494         lov_init_set(set);
 495
 496         set->set_exp = exp;
 497         set->set_oi = oinfo;
 498         set->set_oi->oi_md = lsm;
 499         set->set_lockh = lov_handle2llh(lockh);
 500         if (set->set_lockh == NULL) {
 501                 CERROR("LOV: invalid lov lock handle %p\n", lockh);
 502                 GOTO(out_set, rc = -EINVAL);
 503         }
 504         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 505
 506         for (i = 0; i < lsm->lsm_stripe_count; i++){
 507                 struct lov_request *req;
 508                 struct lustre_handle *lov_lockhp;
 509
 510                 loi = lsm->lsm_oinfo[i];
 511                 lov_lockhp = set->set_lockh->llh_handles + i;
 512                 if (!lustre_handle_is_used(lov_lockhp)) {
 513                         CDEBUG(D_RPCTRACE,"lov idx %d subobj "LPX64" no lock\n",
 514                                loi->loi_ost_idx, loi->loi_id);
 515                         continue;
 516                 }
 517
 518                 OBD_ALLOC(req, sizeof(*req));
 519                 if (req == NULL)
 520                         GOTO(out_set, rc = -ENOMEM);
 521
 522                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 523                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 524                 if (req->rq_oi.oi_md == NULL) {
 525                         OBD_FREE(req, sizeof(*req));
 526                         GOTO(out_set, rc = -ENOMEM);
 527                 }
 528
 529                 req->rq_idx = loi->loi_ost_idx;
 530                 req->rq_stripe = i;
 531
 532                 /* XXX LOV STACKING: submd should be from the subobj */
 533                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 534                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 535
 536                 lov_set_add_req(req, set);
 537         }
 538         if (!set->set_count)
 539                 GOTO(out_set, rc = -EIO);
 540         *reqset = set;
 541         RETURN(rc);
 542 out_set:
 543         lov_fini_cancel_set(set);
 544         RETURN(rc);
 545 }
 546
 547 static int create_done(struct obd_export *exp, struct lov_request_set *set,
 548                        struct lov_stripe_md **lsmp)
 549 {
 550         struct lov_obd *lov = &exp->exp_obd->u.lov;
 551         struct obd_trans_info *oti = set->set_oti;
 552         struct obdo *src_oa = set->set_oi->oi_oa;
 553         struct lov_request *req;
 554         struct obdo *ret_oa = NULL;
 555         int attrset = 0, rc = 0;
 556         ENTRY;
 557
 558         LASSERT(set->set_completes);
 559
 560         /* try alloc objects on other osts if osc_create fails for
 561          * exceptions: RPC failure, ENOSPC, etc */
 562         if (set->set_count != set->set_success) {
 563                 list_for_each_entry (req, &set->set_list, rq_link) {
 564                         if (req->rq_rc == 0)
 565                                 continue;
 566
 567                         set->set_completes--;
 568                         req->rq_complete = 0;
 569
 570                         rc = qos_remedy_create(set, req);
 571                         lov_update_create_set(set, req, rc);
 572
 573                         if (rc)
 574                                 break;
 575                 }
 576         }
 577
 578         /* no successful creates */
 579         if (set->set_success == 0)
 580                 GOTO(cleanup, rc);
 581
 582         /* If there was an explicit stripe set, fail.  Otherwise, we
 583          * got some objects and that's not bad. */
 584         if (set->set_count != set->set_success) {
 585                 if (*lsmp)
 586                         GOTO(cleanup, rc);
 587                 set->set_count = set->set_success;
 588                 qos_shrink_lsm(set);
 589         }
 590
 591         OBDO_ALLOC(ret_oa);
 592         if (ret_oa == NULL)
 593                 GOTO(cleanup, rc = -ENOMEM);
 594
 595         list_for_each_entry(req, &set->set_list, rq_link) {
 596                 if (!req->rq_complete || req->rq_rc)
 597                         continue;
 598                 lov_merge_attrs(ret_oa, req->rq_oi.oi_oa,
 599                                 req->rq_oi.oi_oa->o_valid, set->set_oi->oi_md,
 600                                 req->rq_stripe, &attrset);
 601         }
 602         if (src_oa->o_valid & OBD_MD_FLSIZE &&
 603             ret_oa->o_size != src_oa->o_size) {
 604                 CERROR("original size "LPU64" isn't new object size "LPU64"\n",
 605                        src_oa->o_size, ret_oa->o_size);
 606                 LBUG();
 607         }
 608         ret_oa->o_id = src_oa->o_id;
 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                 if (err)
 626                         CERROR("Failed to uncreate objid "LPX64" subobj "
 627                                LPX64" on OST idx %d: rc = %d\n",
 628                                src_oa->o_id, req->rq_oi.oi_oa->o_id,
 629                                req->rq_idx, rc);
 630         }
 631         if (*lsmp == NULL)
 632                 obd_free_memmd(exp, &set->set_oi->oi_md);
 633 done:
 634         if (oti && set->set_cookies) {
 635                 oti->oti_logcookies = set->set_cookies;
 636                 if (!set->set_cookie_sent) {
 637                         oti_free_cookies(oti);
 638                         src_oa->o_valid &= ~OBD_MD_FLCOOKIE;
 639                 } else {
 640                         src_oa->o_valid |= OBD_MD_FLCOOKIE;
 641                 }
 642         }
 643         RETURN(rc);
 644 }
 645
 646 int lov_fini_create_set(struct lov_request_set *set,struct lov_stripe_md **lsmp)
 647 {
 648         int rc = 0;
 649         ENTRY;
 650
 651         if (set == NULL)
 652                 RETURN(0);
 653         LASSERT(set->set_exp);
 654         if (set->set_completes)
 655                 rc = create_done(set->set_exp, set, lsmp);
 656
 657         if (atomic_dec_and_test(&set->set_refcount))
 658                 lov_finish_set(set);
 659
 660         RETURN(rc);
 661 }
 662
 663 int lov_update_create_set(struct lov_request_set *set,
 664                           struct lov_request *req, int rc)
 665 {
 666         struct obd_trans_info *oti = set->set_oti;
 667         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 668         struct lov_oinfo *loi;
 669         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 670         ENTRY;
 671
 672         req->rq_stripe = set->set_success;
 673         loi = lsm->lsm_oinfo[req->rq_stripe];
 674
 675         if (rc && lov->lov_tgts[req->rq_idx] &&
 676             lov->lov_tgts[req->rq_idx]->ltd_active) {
 677                 CERROR("error creating fid "LPX64" sub-object"
 678                        " on OST idx %d/%d: rc = %d\n",
 679                        set->set_oi->oi_oa->o_id, req->rq_idx,
 680                        lsm->lsm_stripe_count, rc);
 681                 if (rc > 0) {
 682                         CERROR("obd_create returned invalid err %d\n", rc);
 683                         rc = -EIO;
 684                 }
 685         }
 686         lov_update_set(set, req, rc);
 687         if (rc)
 688                 RETURN(rc);
 689
 690         loi->loi_id = req->rq_oi.oi_oa->o_id;
 691         loi->loi_ost_idx = req->rq_idx;
 692         CDEBUG(D_INODE, "objid "LPX64" has subobj "LPX64"/"LPU64" at idx %d\n",
 693                lsm->lsm_object_id, loi->loi_id, loi->loi_id, req->rq_idx);
 694         loi_init(loi);
 695
 696         if (oti && set->set_cookies)
 697                 ++oti->oti_logcookies;
 698         if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCOOKIE)
 699                 set->set_cookie_sent++;
 700
 701         RETURN(0);
 702 }
 703
 704 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oinfo,
 705                         struct lov_stripe_md **lsmp, struct obdo *src_oa,
 706                         struct obd_trans_info *oti,
 707                         struct lov_request_set **reqset)
 708 {
 709         struct lov_request_set *set;
 710         int rc = 0;
 711         ENTRY;
 712
 713         OBD_ALLOC(set, sizeof(*set));
 714         if (set == NULL)
 715                 RETURN(-ENOMEM);
 716         lov_init_set(set);
 717
 718         set->set_exp = exp;
 719         set->set_oi = oinfo;
 720         set->set_oi->oi_md = *lsmp;
 721         set->set_oi->oi_oa = src_oa;
 722         set->set_oti = oti;
 723
 724         rc = qos_prep_create(exp, set);
 725         if (rc)
 726                 lov_fini_create_set(set, lsmp);
 727         else
 728                 *reqset = set;
 729         RETURN(rc);
 730 }
 731
 732 static int common_attr_done(struct lov_request_set *set)
 733 {
 734         struct list_head *pos;
 735         struct lov_request *req;
 736         struct obdo *tmp_oa;
 737         int rc = 0, attrset = 0;
 738         ENTRY;
 739
 740         LASSERT(set->set_oi != NULL);
 741
 742         if (set->set_oi->oi_oa == NULL)
 743                 RETURN(0);
 744
 745         if (!set->set_success)
 746                 RETURN(-EIO);
 747
 748         OBDO_ALLOC(tmp_oa);
 749         if (tmp_oa == NULL)
 750                 GOTO(out, rc = -ENOMEM);
 751
 752         list_for_each (pos, &set->set_list) {
 753                 req = list_entry(pos, struct lov_request, rq_link);
 754
 755                 if (!req->rq_complete || req->rq_rc)
 756                         continue;
 757                 if (req->rq_oi.oi_oa->o_valid == 0)   /* inactive stripe */
 758                         continue;
 759                 lov_merge_attrs(tmp_oa, req->rq_oi.oi_oa,
 760                                 req->rq_oi.oi_oa->o_valid,
 761                                 set->set_oi->oi_md, req->rq_stripe, &attrset);
 762         }
 763         if (!attrset) {
 764                 CERROR("No stripes had valid attrs\n");
 765                 rc = -EIO;
 766         }
 767         tmp_oa->o_id = set->set_oi->oi_oa->o_id;
 768         memcpy(set->set_oi->oi_oa, tmp_oa, sizeof(*set->set_oi->oi_oa));
 769 out:
 770         if (tmp_oa)
 771                 OBDO_FREE(tmp_oa);
 772         RETURN(rc);
 773
 774 }
 775
 776 static int brw_done(struct lov_request_set *set)
 777 {
 778         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 779         struct lov_oinfo     *loi = NULL;
 780         struct list_head *pos;
 781         struct lov_request *req;
 782         ENTRY;
 783
 784         list_for_each (pos, &set->set_list) {
 785                 req = list_entry(pos, struct lov_request, rq_link);
 786
 787                 if (!req->rq_complete || req->rq_rc)
 788                         continue;
 789
 790                 loi = lsm->lsm_oinfo[req->rq_stripe];
 791
 792                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS)
 793                         loi->loi_lvb.lvb_blocks = req->rq_oi.oi_oa->o_blocks;
 794         }
 795
 796         RETURN(0);
 797 }
 798
 799 int lov_fini_brw_set(struct lov_request_set *set)
 800 {
 801         int rc = 0;
 802         ENTRY;
 803
 804         if (set == NULL)
 805                 RETURN(0);
 806         LASSERT(set->set_exp);
 807         if (set->set_completes) {
 808                 rc = brw_done(set);
 809                 /* FIXME update qos data here */
 810         }
 811         if (atomic_dec_and_test(&set->set_refcount))
 812                 lov_finish_set(set);
 813
 814         RETURN(rc);
 815 }
 816
 817 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
 818                      obd_count oa_bufs, struct brw_page *pga,
 819                      struct obd_trans_info *oti,
 820                      struct lov_request_set **reqset)
 821 {
 822         struct {
 823                 obd_count       index;
 824                 obd_count       count;
 825                 obd_count       off;
 826         } *info = NULL;
 827         struct lov_request_set *set;
 828         struct lov_oinfo *loi = NULL;
 829         struct lov_obd *lov = &exp->exp_obd->u.lov;
 830         int rc = 0, i, shift;
 831         ENTRY;
 832
 833         OBD_ALLOC(set, sizeof(*set));
 834         if (set == NULL)
 835                 RETURN(-ENOMEM);
 836         lov_init_set(set);
 837
 838         set->set_exp = exp;
 839         set->set_oti = oti;
 840         set->set_oi = oinfo;
 841         set->set_oabufs = oa_bufs;
 842         OBD_ALLOC(set->set_pga, oa_bufs * sizeof(*set->set_pga));
 843         if (!set->set_pga)
 844                 GOTO(out, rc = -ENOMEM);
 845
 846         OBD_ALLOC(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 847         if (!info)
 848                 GOTO(out, rc = -ENOMEM);
 849
 850         /* calculate the page count for each stripe */
 851         for (i = 0; i < oa_bufs; i++) {
 852                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 853                 info[stripe].count++;
 854         }
 855
 856         /* alloc and initialize lov request */
 857         shift = 0;
 858         for (i = 0 ; i < oinfo->oi_md->lsm_stripe_count; i++){
 859                 struct lov_request *req;
 860
 861                 if (info[i].count == 0)
 862                         continue;
 863
 864                 loi = oinfo->oi_md->lsm_oinfo[i];
 865                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 866                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 867                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 868                         GOTO(out, rc = -EIO);
 869                 }
 870
 871                 OBD_ALLOC(req, sizeof(*req));
 872                 if (req == NULL)
 873                         GOTO(out, rc = -ENOMEM);
 874
 875                 OBDO_ALLOC(req->rq_oi.oi_oa);
 876                 if (req->rq_oi.oi_oa == NULL) {
 877                         OBD_FREE(req, sizeof(*req));
 878                         GOTO(out, rc = -ENOMEM);
 879                 }
 880
 881                 if (oinfo->oi_oa) {
 882                         memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
 883                                sizeof(*req->rq_oi.oi_oa));
 884                 }
 885                 req->rq_oi.oi_oa->o_id = loi->loi_id;
 886                 req->rq_oi.oi_oa->o_stripe_idx = i;
 887
 888                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 889                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 890                 if (req->rq_oi.oi_md == NULL) {
 891                         OBDO_FREE(req->rq_oi.oi_oa);
 892                         OBD_FREE(req, sizeof(*req));
 893                         GOTO(out, rc = -ENOMEM);
 894                 }
 895
 896                 req->rq_idx = loi->loi_ost_idx;
 897                 req->rq_stripe = i;
 898
 899                 /* XXX LOV STACKING */
 900                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 901                 req->rq_oi.oi_md->lsm_object_gr = oinfo->oi_md->lsm_object_gr;
 902                 req->rq_oabufs = info[i].count;
 903                 req->rq_pgaidx = shift;
 904                 shift += req->rq_oabufs;
 905
 906                 /* remember the index for sort brw_page array */
 907                 info[i].index = req->rq_pgaidx;
 908
 909                 lov_set_add_req(req, set);
 910         }
 911         if (!set->set_count)
 912                 GOTO(out, rc = -EIO);
 913
 914         /* rotate & sort the brw_page array */
 915         for (i = 0; i < oa_bufs; i++) {
 916                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 917
 918                 shift = info[stripe].index + info[stripe].off;
 919                 LASSERT(shift < oa_bufs);
 920                 set->set_pga[shift] = pga[i];
 921                 lov_stripe_offset(oinfo->oi_md, pga[i].off, stripe,
 922                                   &set->set_pga[shift].off);
 923                 info[stripe].off++;
 924         }
 925 out:
 926         if (info)
 927                 OBD_FREE(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 928
 929         if (rc == 0)
 930                 *reqset = set;
 931         else
 932                 lov_fini_brw_set(set);
 933
 934         RETURN(rc);
 935 }
 936
 937 int lov_fini_getattr_set(struct lov_request_set *set)
 938 {
 939         int rc = 0;
 940         ENTRY;
 941
 942         if (set == NULL)
 943                 RETURN(0);
 944         LASSERT(set->set_exp);
 945         if (set->set_completes)
 946                 rc = common_attr_done(set);
 947
 948         if (atomic_dec_and_test(&set->set_refcount))
 949                 lov_finish_set(set);
 950
 951         RETURN(rc);
 952 }
 953
 954 /* The callback for osc_getattr_async that finilizes a request info when a
 955  * response is recieved. */
 956 static int cb_getattr_update(struct obd_info *oinfo, int rc)
 957 {
 958         struct lov_request *lovreq;
 959         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 960         return lov_update_common_set(lovreq->rq_rqset, lovreq, rc);
 961 }
 962
 963 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
 964                          struct lov_request_set **reqset)
 965 {
 966         struct lov_request_set *set;
 967         struct lov_oinfo *loi = NULL;
 968         struct lov_obd *lov = &exp->exp_obd->u.lov;
 969         int rc = 0, i;
 970         ENTRY;
 971
 972         OBD_ALLOC(set, sizeof(*set));
 973         if (set == NULL)
 974                 RETURN(-ENOMEM);
 975         lov_init_set(set);
 976
 977         set->set_exp = exp;
 978         set->set_oi = oinfo;
 979
 980         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
 981                 struct lov_request *req;
 982
 983                 loi = oinfo->oi_md->lsm_oinfo[i];
 984                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 985                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 986                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 987                         continue;
 988                 }
 989
 990                 OBD_ALLOC(req, sizeof(*req));
 991                 if (req == NULL)
 992                         GOTO(out_set, rc = -ENOMEM);
 993
 994                 req->rq_stripe = i;
 995                 req->rq_idx = loi->loi_ost_idx;
 996
 997                 OBDO_ALLOC(req->rq_oi.oi_oa);
 998                 if (req->rq_oi.oi_oa == NULL) {
 999                         OBD_FREE(req, sizeof(*req));
1000                         GOTO(out_set, rc = -ENOMEM);
1001                 }
1002                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1003                        sizeof(*req->rq_oi.oi_oa));
1004                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1005                 req->rq_oi.oi_cb_up = cb_getattr_update;
1006
1007                 lov_set_add_req(req, set);
1008         }
1009         if (!set->set_count)
1010                 GOTO(out_set, rc = -EIO);
1011         *reqset = set;
1012         RETURN(rc);
1013 out_set:
1014         lov_fini_getattr_set(set);
1015         RETURN(rc);
1016 }
1017
1018 int lov_fini_destroy_set(struct lov_request_set *set)
1019 {
1020         ENTRY;
1021
1022         if (set == NULL)
1023                 RETURN(0);
1024         LASSERT(set->set_exp);
1025         if (set->set_completes) {
1026                 /* FIXME update qos data here */
1027         }
1028
1029         if (atomic_dec_and_test(&set->set_refcount))
1030                 lov_finish_set(set);
1031
1032         RETURN(0);
1033 }
1034
1035 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
1036                          struct obdo *src_oa, struct lov_stripe_md *lsm,
1037                          struct obd_trans_info *oti,
1038                          struct lov_request_set **reqset)
1039 {
1040         struct lov_request_set *set;
1041         struct lov_oinfo *loi = NULL;
1042         struct lov_obd *lov = &exp->exp_obd->u.lov;
1043         int rc = 0, i;
1044         ENTRY;
1045
1046         OBD_ALLOC(set, sizeof(*set));
1047         if (set == NULL)
1048                 RETURN(-ENOMEM);
1049         lov_init_set(set);
1050
1051         set->set_exp = exp;
1052         set->set_oi = oinfo;
1053         set->set_oi->oi_md = lsm;
1054         set->set_oi->oi_oa = src_oa;
1055         set->set_oti = oti;
1056         if (oti != NULL && src_oa->o_valid & OBD_MD_FLCOOKIE)
1057                 set->set_cookies = oti->oti_logcookies;
1058
1059         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1060                 struct lov_request *req;
1061
1062                 loi = lsm->lsm_oinfo[i];
1063                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1064                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1065                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1066                         continue;
1067                 }
1068
1069                 OBD_ALLOC(req, sizeof(*req));
1070                 if (req == NULL)
1071                         GOTO(out_set, rc = -ENOMEM);
1072
1073                 req->rq_stripe = i;
1074                 req->rq_idx = loi->loi_ost_idx;
1075
1076                 OBDO_ALLOC(req->rq_oi.oi_oa);
1077                 if (req->rq_oi.oi_oa == NULL) {
1078                         OBD_FREE(req, sizeof(*req));
1079                         GOTO(out_set, rc = -ENOMEM);
1080                 }
1081                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1082                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1083                 lov_set_add_req(req, set);
1084         }
1085         if (!set->set_count)
1086                 GOTO(out_set, rc = -EIO);
1087         *reqset = set;
1088         RETURN(rc);
1089 out_set:
1090         lov_fini_destroy_set(set);
1091         RETURN(rc);
1092 }
1093
1094 int lov_fini_setattr_set(struct lov_request_set *set)
1095 {
1096         int rc = 0;
1097         ENTRY;
1098
1099         if (set == NULL)
1100                 RETURN(0);
1101         LASSERT(set->set_exp);
1102         if (set->set_completes) {
1103                 rc = common_attr_done(set);
1104                 /* FIXME update qos data here */
1105         }
1106
1107         if (atomic_dec_and_test(&set->set_refcount))
1108                 lov_finish_set(set);
1109         RETURN(rc);
1110 }
1111
1112 int lov_update_setattr_set(struct lov_request_set *set,
1113                            struct lov_request *req, int rc)
1114 {
1115         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1116         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1117         ENTRY;
1118
1119         lov_update_set(set, req, rc);
1120
1121         /* grace error on inactive ost */
1122         if (rc && !(lov->lov_tgts[req->rq_idx] &&
1123                     lov->lov_tgts[req->rq_idx]->ltd_active))
1124                 rc = 0;
1125
1126         if (rc == 0) {
1127                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCTIME)
1128                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_ctime =
1129                                 req->rq_oi.oi_oa->o_ctime;
1130                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLMTIME)
1131                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_mtime =
1132                                 req->rq_oi.oi_oa->o_mtime;
1133                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLATIME)
1134                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_atime =
1135                                 req->rq_oi.oi_oa->o_atime;
1136         }
1137
1138         RETURN(rc);
1139 }
1140
1141 /* The callback for osc_setattr_async that finilizes a request info when a
1142  * response is recieved. */
1143 static int cb_setattr_update(struct obd_info *oinfo, int rc)
1144 {
1145         struct lov_request *lovreq;
1146         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1147         return lov_update_setattr_set(lovreq->rq_rqset, lovreq, rc);
1148 }
1149
1150 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
1151                          struct obd_trans_info *oti,
1152                          struct lov_request_set **reqset)
1153 {
1154         struct lov_request_set *set;
1155         struct lov_oinfo *loi = NULL;
1156         struct lov_obd *lov = &exp->exp_obd->u.lov;
1157         int rc = 0, i;
1158         ENTRY;
1159
1160         OBD_ALLOC(set, sizeof(*set));
1161         if (set == NULL)
1162                 RETURN(-ENOMEM);
1163         lov_init_set(set);
1164
1165         set->set_exp = exp;
1166         set->set_oti = oti;
1167         set->set_oi = oinfo;
1168         if (oti != NULL && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
1169                 set->set_cookies = oti->oti_logcookies;
1170
1171         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1172                 struct lov_request *req;
1173
1174                 loi = oinfo->oi_md->lsm_oinfo[i];
1175                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1176                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1177                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1178                         continue;
1179                 }
1180
1181                 OBD_ALLOC(req, sizeof(*req));
1182                 if (req == NULL)
1183                         GOTO(out_set, rc = -ENOMEM);
1184                 req->rq_stripe = i;
1185                 req->rq_idx = loi->loi_ost_idx;
1186
1187                 OBDO_ALLOC(req->rq_oi.oi_oa);
1188                 if (req->rq_oi.oi_oa == NULL) {
1189                         OBD_FREE(req, sizeof(*req));
1190                         GOTO(out_set, rc = -ENOMEM);
1191                 }
1192                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1193                        sizeof(*req->rq_oi.oi_oa));
1194                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1195                 req->rq_oi.oi_oa->o_stripe_idx = i;
1196                 req->rq_oi.oi_cb_up = cb_setattr_update;
1197                 req->rq_rqset = set;
1198
1199                 if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE) {
1200                         int off = lov_stripe_offset(oinfo->oi_md,
1201                                                     oinfo->oi_oa->o_size, i,
1202                                                     &req->rq_oi.oi_oa->o_size);
1203
1204                         if (off < 0 && req->rq_oi.oi_oa->o_size)
1205                                 req->rq_oi.oi_oa->o_size--;
1206
1207                         CDEBUG(D_INODE, "stripe %d has size "LPU64"/"LPU64"\n",
1208                                i, req->rq_oi.oi_oa->o_size,
1209                                oinfo->oi_oa->o_size);
1210                 }
1211                 lov_set_add_req(req, set);
1212         }
1213         if (!set->set_count)
1214                 GOTO(out_set, rc = -EIO);
1215         *reqset = set;
1216         RETURN(rc);
1217 out_set:
1218         lov_fini_setattr_set(set);
1219         RETURN(rc);
1220 }
1221
1222 int lov_fini_punch_set(struct lov_request_set *set)
1223 {
1224         int rc = 0;
1225         ENTRY;
1226
1227         if (set == NULL)
1228                 RETURN(0);
1229         LASSERT(set->set_exp);
1230         if (set->set_completes) {
1231                 rc = -EIO;
1232                 /* FIXME update qos data here */
1233                 if (set->set_success)
1234                         rc = common_attr_done(set);
1235         }
1236
1237         if (atomic_dec_and_test(&set->set_refcount))
1238                 lov_finish_set(set);
1239
1240         RETURN(rc);
1241 }
1242
1243 int lov_update_punch_set(struct lov_request_set *set,
1244                            struct lov_request *req, int rc)
1245 {
1246         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1247         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1248         ENTRY;
1249
1250         lov_update_set(set, req, rc);
1251
1252         /* grace error on inactive ost */
1253         if (rc && !lov->lov_tgts[req->rq_idx]->ltd_active)
1254                 rc = 0;
1255
1256         if (rc == 0) {
1257                 lov_stripe_lock(lsm);
1258                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS) {
1259                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_blocks =
1260                                 req->rq_oi.oi_oa->o_blocks;
1261                 }
1262
1263                 /* Do we need to update lvb_size here? It needn't because
1264                  * it have been done in ll_truncate(). -jay */
1265                 lov_stripe_unlock(lsm);
1266         }
1267
1268         RETURN(rc);
1269 }
1270
1271 /* The callback for osc_punch that finilizes a request info when a response
1272  * is recieved. */
1273 static int cb_update_punch(struct obd_info *oinfo, int rc)
1274 {
1275         struct lov_request *lovreq;
1276         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1277         return lov_update_punch_set(lovreq->rq_rqset, lovreq, rc);
1278 }
1279
1280 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
1281                        struct obd_trans_info *oti,
1282                        struct lov_request_set **reqset)
1283 {
1284         struct lov_request_set *set;
1285         struct lov_oinfo *loi = NULL;
1286         struct lov_obd *lov = &exp->exp_obd->u.lov;
1287         int rc = 0, i;
1288         ENTRY;
1289
1290         OBD_ALLOC(set, sizeof(*set));
1291         if (set == NULL)
1292                 RETURN(-ENOMEM);
1293         lov_init_set(set);
1294
1295         set->set_oi = oinfo;
1296         set->set_exp = exp;
1297
1298         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1299                 struct lov_request *req;
1300                 obd_off rs, re;
1301
1302                 loi = oinfo->oi_md->lsm_oinfo[i];
1303                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1304                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1305                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1306                         continue;
1307                 }
1308
1309                 if (!lov_stripe_intersects(oinfo->oi_md, i,
1310                                            oinfo->oi_policy.l_extent.start,
1311                                            oinfo->oi_policy.l_extent.end,
1312                                            &rs, &re))
1313                         continue;
1314
1315                 OBD_ALLOC(req, sizeof(*req));
1316                 if (req == NULL)
1317                         GOTO(out_set, rc = -ENOMEM);
1318                 req->rq_stripe = i;
1319                 req->rq_idx = loi->loi_ost_idx;
1320
1321                 OBDO_ALLOC(req->rq_oi.oi_oa);
1322                 if (req->rq_oi.oi_oa == NULL) {
1323                         OBD_FREE(req, sizeof(*req));
1324                         GOTO(out_set, rc = -ENOMEM);
1325                 }
1326                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1327                        sizeof(*req->rq_oi.oi_oa));
1328                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1329                 req->rq_oi.oi_oa->o_stripe_idx = i;
1330                 req->rq_oi.oi_cb_up = cb_update_punch;
1331                 req->rq_rqset = set;
1332
1333                 req->rq_oi.oi_policy.l_extent.start = rs;
1334                 req->rq_oi.oi_policy.l_extent.end = re;
1335                 req->rq_oi.oi_policy.l_extent.gid = -1;
1336
1337                 lov_set_add_req(req, set);
1338         }
1339         if (!set->set_count)
1340                 GOTO(out_set, rc = -EIO);
1341         *reqset = set;
1342         RETURN(rc);
1343 out_set:
1344         lov_fini_punch_set(set);
1345         RETURN(rc);
1346 }
1347
1348 int lov_fini_sync_set(struct lov_request_set *set)
1349 {
1350         int rc = 0;
1351         ENTRY;
1352
1353         if (set == NULL)
1354                 RETURN(0);
1355         LASSERT(set->set_exp);
1356         if (set->set_completes) {
1357                 if (!set->set_success)
1358                         rc = -EIO;
1359                 /* FIXME update qos data here */
1360         }
1361
1362         if (atomic_dec_and_test(&set->set_refcount))
1363                 lov_finish_set(set);
1364
1365         RETURN(rc);
1366 }
1367
1368 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *oinfo,
1369                       struct obdo *src_oa, struct lov_stripe_md *lsm,
1370                       obd_off start, obd_off end,
1371                       struct lov_request_set **reqset)
1372 {
1373         struct lov_request_set *set;
1374         struct lov_oinfo *loi = NULL;
1375         struct lov_obd *lov = &exp->exp_obd->u.lov;
1376         int rc = 0, i;
1377         ENTRY;
1378
1379         OBD_ALLOC(set, sizeof(*set));
1380         if (set == NULL)
1381                 RETURN(-ENOMEM);
1382         lov_init_set(set);
1383
1384         set->set_exp = exp;
1385         set->set_oi = oinfo;
1386         set->set_oi->oi_md = lsm;
1387         set->set_oi->oi_oa = src_oa;
1388
1389         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1390                 struct lov_request *req;
1391                 obd_off rs, re;
1392
1393                 loi = lsm->lsm_oinfo[i];
1394                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1395                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1396                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1397                         continue;
1398                 }
1399
1400                 if (!lov_stripe_intersects(lsm, i, start, end, &rs, &re))
1401                         continue;
1402
1403                 OBD_ALLOC(req, sizeof(*req));
1404                 if (req == NULL)
1405                         GOTO(out_set, rc = -ENOMEM);
1406                 req->rq_stripe = i;
1407                 req->rq_idx = loi->loi_ost_idx;
1408
1409                 OBDO_ALLOC(req->rq_oi.oi_oa);
1410                 if (req->rq_oi.oi_oa == NULL) {
1411                         OBD_FREE(req, sizeof(*req));
1412                         GOTO(out_set, rc = -ENOMEM);
1413                 }
1414                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1415                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1416                 req->rq_oi.oi_oa->o_stripe_idx = i;
1417
1418                 req->rq_oi.oi_policy.l_extent.start = rs;
1419                 req->rq_oi.oi_policy.l_extent.end = re;
1420                 req->rq_oi.oi_policy.l_extent.gid = -1;
1421
1422                 lov_set_add_req(req, set);
1423         }
1424         if (!set->set_count)
1425                 GOTO(out_set, rc = -EIO);
1426         *reqset = set;
1427         RETURN(rc);
1428 out_set:
1429         lov_fini_sync_set(set);
1430         RETURN(rc);
1431 }
1432
1433 #define LOV_U64_MAX ((__u64)~0ULL)
1434 #define LOV_SUM_MAX(tot, add)                                           \
1435         do {                                                            \
1436                 if ((tot) + (add) < (tot))                              \
1437                         (tot) = LOV_U64_MAX;                            \
1438                 else                                                    \
1439                         (tot) += (add);                                 \
1440         } while(0)
1441
1442 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,int success)
1443 {
1444         ENTRY;
1445
1446         if (success) {
1447                 __u32 expected_stripes = lov_get_stripecnt(&obd->u.lov, 0);
1448
1449                 if (osfs->os_files != LOV_U64_MAX)
1450                         do_div(osfs->os_files, expected_stripes);
1451                 if (osfs->os_ffree != LOV_U64_MAX)
1452                         do_div(osfs->os_ffree, expected_stripes);
1453
1454                 spin_lock(&obd->obd_osfs_lock);
1455                 memcpy(&obd->obd_osfs, osfs, sizeof(*osfs));
1456                 obd->obd_osfs_age = get_jiffies_64();
1457                 spin_unlock(&obd->obd_osfs_lock);
1458                 RETURN(0);
1459         }
1460
1461         RETURN(-EIO);
1462 }
1463
1464 int lov_fini_statfs_set(struct lov_request_set *set)
1465 {
1466         int rc = 0;
1467         ENTRY;
1468
1469         if (set == NULL)
1470                 RETURN(0);
1471
1472         if (set->set_completes) {
1473                 rc = lov_fini_statfs(set->set_obd, set->set_oi->oi_osfs,
1474                                      set->set_success);
1475         }
1476
1477         if (atomic_dec_and_test(&set->set_refcount))
1478                 lov_finish_set(set);
1479
1480         RETURN(rc);
1481 }
1482
1483 void lov_update_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1484                        struct obd_statfs *lov_sfs, int success)
1485 {
1486         int shift = 0, quit = 0;
1487         __u64 tmp;
1488         spin_lock(&obd->obd_osfs_lock);
1489         memcpy(&obd->obd_osfs, lov_sfs, sizeof(*lov_sfs));
1490         obd->obd_osfs_age = get_jiffies_64();
1491         spin_unlock(&obd->obd_osfs_lock);
1492
1493         if (success == 0) {
1494                 memcpy(osfs, lov_sfs, sizeof(*lov_sfs));
1495         } else {
1496                 if (osfs->os_bsize != lov_sfs->os_bsize) {
1497                         /* assume all block sizes are always powers of 2 */
1498                         /* get the bits difference */
1499                         tmp = osfs->os_bsize | lov_sfs->os_bsize;
1500                         for (shift = 0; shift <= 64; ++shift) {
1501                                 if (tmp & 1) {
1502                                         if (quit)
1503                                                 break;
1504                                         else
1505                                                 quit = 1;
1506                                         shift = 0;
1507                                 }
1508                                 tmp >>= 1;
1509                         }
1510                 }
1511
1512                 if (osfs->os_bsize < lov_sfs->os_bsize) {
1513                         osfs->os_bsize = lov_sfs->os_bsize;
1514
1515                         osfs->os_bfree  >>= shift;
1516                         osfs->os_bavail >>= shift;
1517                         osfs->os_blocks >>= shift;
1518                 } else if (shift != 0) {
1519                         lov_sfs->os_bfree  >>= shift;
1520                         lov_sfs->os_bavail >>= shift;
1521                         lov_sfs->os_blocks >>= shift;
1522                 }
1523 #ifdef MIN_DF
1524                 /* Sandia requested that df (and so, statfs) only
1525                    returned minimal available space on
1526                    a single OST, so people would be able to
1527                    write this much data guaranteed. */
1528                 if (osfs->os_bavail > lov_sfs->os_bavail) {
1529                         /* Presumably if new bavail is smaller,
1530                            new bfree is bigger as well */
1531                         osfs->os_bfree = lov_sfs->os_bfree;
1532                         osfs->os_bavail = lov_sfs->os_bavail;
1533                 }
1534 #else
1535                 osfs->os_bfree += lov_sfs->os_bfree;
1536                 osfs->os_bavail += lov_sfs->os_bavail;
1537 #endif
1538                 osfs->os_blocks += lov_sfs->os_blocks;
1539                 /* XXX not sure about this one - depends on policy.
1540                  *   - could be minimum if we always stripe on all OBDs
1541                  *     (but that would be wrong for any other policy,
1542                  *     if one of the OBDs has no more objects left)
1543                  *   - could be sum if we stripe whole objects
1544                  *   - could be average, just to give a nice number
1545                  *
1546                  * To give a "reasonable" (if not wholly accurate)
1547                  * number, we divide the total number of free objects
1548                  * by expected stripe count (watch out for overflow).
1549                  */
1550                 LOV_SUM_MAX(osfs->os_files, lov_sfs->os_files);
1551                 LOV_SUM_MAX(osfs->os_ffree, lov_sfs->os_ffree);
1552         }
1553 }
1554
1555 /* The callback for osc_statfs_async that finilizes a request info when a
1556  * response is recieved. */
1557 static int cb_statfs_update(struct obd_info *oinfo, int rc)
1558 {
1559         struct lov_request *lovreq;
1560         struct obd_statfs *osfs, *lov_sfs;
1561         struct obd_device *obd;
1562         struct lov_obd *lov;
1563         int success;
1564         ENTRY;
1565
1566         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1567         lov = &lovreq->rq_rqset->set_obd->u.lov;
1568         obd = class_exp2obd(lov->lov_tgts[lovreq->rq_idx]->ltd_exp);
1569
1570         osfs = lovreq->rq_rqset->set_oi->oi_osfs;
1571         lov_sfs = oinfo->oi_osfs;
1572
1573         success = lovreq->rq_rqset->set_success;
1574
1575         /* XXX: the same is done in lov_update_common_set, however
1576            lovset->set_exp is not initialized. */
1577         lov_update_set(lovreq->rq_rqset, lovreq, rc);
1578         if (rc) {
1579                 if (rc && !(lov->lov_tgts[lovreq->rq_idx] &&
1580                             lov->lov_tgts[lovreq->rq_idx]->ltd_active))
1581                         rc = 0;
1582                 RETURN(rc);
1583         }
1584
1585         lov_update_statfs(obd, osfs, lov_sfs, success);
1586         qos_update(lov);
1587
1588         RETURN(0);
1589 }
1590
1591 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
1592                         struct lov_request_set **reqset)
1593 {
1594         struct lov_request_set *set;
1595         struct lov_obd *lov = &obd->u.lov;
1596         int rc = 0, i;
1597         ENTRY;
1598
1599         OBD_ALLOC(set, sizeof(*set));
1600         if (set == NULL)
1601                 RETURN(-ENOMEM);
1602         lov_init_set(set);
1603
1604         set->set_obd = obd;
1605         set->set_oi = oinfo;
1606
1607         /* We only get block data from the OBD */
1608         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
1609                 struct lov_request *req;
1610
1611                 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) {
1612                         CDEBUG(D_HA, "lov idx %d inactive\n", i);
1613                         continue;
1614                 }
1615
1616                 OBD_ALLOC(req, sizeof(*req));
1617                 if (req == NULL)
1618                         GOTO(out_set, rc = -ENOMEM);
1619
1620                 OBD_ALLOC(req->rq_oi.oi_osfs, sizeof(*req->rq_oi.oi_osfs));
1621                 if (req->rq_oi.oi_osfs == NULL) {
1622                         OBD_FREE(req, sizeof(*req));
1623                         GOTO(out_set, rc = -ENOMEM);
1624                 }
1625
1626                 req->rq_idx = i;
1627                 req->rq_oi.oi_cb_up = cb_statfs_update;
1628                 req->rq_rqset = set;
1629
1630                 lov_set_add_req(req, set);
1631         }
1632         if (!set->set_count)
1633                 GOTO(out_set, rc = -EIO);
1634         *reqset = set;
1635         RETURN(rc);
1636 out_set:
1637         lov_fini_statfs_set(set);
1638         RETURN(rc);
1639 }