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         ENTRY;
 273
 274         OBD_ALLOC(set, sizeof(*set));
 275         if (set == NULL)
 276                 RETURN(-ENOMEM);
 277         lov_init_set(set);
 278
 279         set->set_exp = exp;
 280         set->set_oi = oinfo;
 281         set->set_ei = einfo;
 282         set->set_lockh = lov_llh_new(oinfo->oi_md);
 283         if (set->set_lockh == NULL)
 284                 GOTO(out_set, rc = -ENOMEM);
 285         oinfo->oi_lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 286
 287         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
 288                 struct lov_oinfo *loi;
 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_object_gr = oinfo->oi_md->lsm_object_gr;
 341                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 342                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_kms_valid =
 343                         loi->loi_kms_valid;
 344                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_kms = loi->loi_kms;
 345                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb = loi->loi_lvb;
 346
 347                 lov_set_add_req(req, set);
 348         }
 349         if (!set->set_count)
 350                 GOTO(out_set, rc = -EIO);
 351         *reqset = set;
 352         RETURN(0);
 353 out_set:
 354         lov_fini_enqueue_set(set, einfo->ei_mode, rc, NULL);
 355         RETURN(rc);
 356 }
 357
 358 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
 359                          int rc)
 360 {
 361         int ret = rc;
 362         ENTRY;
 363
 364         if (rc > 0)
 365                 ret = 0;
 366         else if (rc == 0)
 367                 ret = 1;
 368         lov_update_set(set, req, ret);
 369         RETURN(rc);
 370 }
 371
 372 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags)
 373 {
 374         int rc = 0;
 375         ENTRY;
 376
 377         if (set == NULL)
 378                 RETURN(0);
 379         LASSERT(set->set_exp);
 380         rc = enqueue_done(set, mode);
 381         if ((set->set_count == set->set_success) &&
 382             (flags & LDLM_FL_TEST_LOCK))
 383                 lov_llh_put(set->set_lockh);
 384
 385         if (atomic_dec_and_test(&set->set_refcount))
 386                 lov_finish_set(set);
 387
 388         RETURN(rc);
 389 }
 390
 391 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
 392                        struct lov_stripe_md *lsm, ldlm_policy_data_t *policy,
 393                        __u32 mode, struct lustre_handle *lockh,
 394                        struct lov_request_set **reqset)
 395 {
 396         struct lov_obd *lov = &exp->exp_obd->u.lov;
 397         struct lov_request_set *set;
 398         int i, rc = 0;
 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_oinfo *loi;
 416                 struct lov_request *req;
 417                 obd_off start, end;
 418
 419                 loi = lsm->lsm_oinfo[i];
 420                 if (!lov_stripe_intersects(lsm, i, policy->l_extent.start,
 421                                            policy->l_extent.end, &start, &end))
 422                         continue;
 423
 424                 /* FIXME raid1 should grace this error */
 425                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 426                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 427                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 428                         GOTO(out_set, rc = -EIO);
 429                 }
 430
 431                 OBD_ALLOC(req, sizeof(*req));
 432                 if (req == NULL)
 433                         GOTO(out_set, rc = -ENOMEM);
 434
 435                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 436                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 437                 if (req->rq_oi.oi_md == NULL) {
 438                         OBD_FREE(req, sizeof(*req));
 439                         GOTO(out_set, rc = -ENOMEM);
 440                 }
 441
 442                 req->rq_oi.oi_policy.l_extent.start = start;
 443                 req->rq_oi.oi_policy.l_extent.end = end;
 444                 req->rq_oi.oi_policy.l_extent.gid = policy->l_extent.gid;
 445
 446                 req->rq_idx = loi->loi_ost_idx;
 447                 req->rq_stripe = i;
 448
 449                 /* XXX LOV STACKING: submd should be from the subobj */
 450                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 451                 req->rq_oi.oi_md->lsm_object_gr = lsm->lsm_object_gr;
 452                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 453
 454                 lov_set_add_req(req, set);
 455         }
 456         if (!set->set_count)
 457                 GOTO(out_set, rc = -EIO);
 458         *reqset = set;
 459         RETURN(rc);
 460 out_set:
 461         lov_fini_match_set(set, mode, 0);
 462         RETURN(rc);
 463 }
 464
 465 int lov_fini_cancel_set(struct lov_request_set *set)
 466 {
 467         int rc = 0;
 468         ENTRY;
 469
 470         if (set == NULL)
 471                 RETURN(0);
 472
 473         LASSERT(set->set_exp);
 474         if (set->set_lockh)
 475                 lov_llh_put(set->set_lockh);
 476
 477         if (atomic_dec_and_test(&set->set_refcount))
 478                 lov_finish_set(set);
 479
 480         RETURN(rc);
 481 }
 482
 483 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
 484                         struct lov_stripe_md *lsm, __u32 mode,
 485                         struct lustre_handle *lockh,
 486                         struct lov_request_set **reqset)
 487 {
 488         struct lov_request_set *set;
 489         int i, rc = 0;
 490         ENTRY;
 491
 492         OBD_ALLOC(set, sizeof(*set));
 493         if (set == NULL)
 494                 RETURN(-ENOMEM);
 495         lov_init_set(set);
 496
 497         set->set_exp = exp;
 498         set->set_oi = oinfo;
 499         set->set_oi->oi_md = lsm;
 500         set->set_lockh = lov_handle2llh(lockh);
 501         if (set->set_lockh == NULL) {
 502                 CERROR("LOV: invalid lov lock handle %p\n", lockh);
 503                 GOTO(out_set, rc = -EINVAL);
 504         }
 505         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 506
 507         for (i = 0; i < lsm->lsm_stripe_count; i++){
 508                 struct lov_request *req;
 509                 struct lustre_handle *lov_lockhp;
 510                 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
 511
 512                 lov_lockhp = set->set_lockh->llh_handles + i;
 513                 if (!lustre_handle_is_used(lov_lockhp)) {
 514                         CDEBUG(D_RPCTRACE,"lov idx %d subobj "LPX64" no lock\n",
 515                                loi->loi_ost_idx, loi->loi_id);
 516                         continue;
 517                 }
 518
 519                 OBD_ALLOC(req, sizeof(*req));
 520                 if (req == NULL)
 521                         GOTO(out_set, rc = -ENOMEM);
 522
 523                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 524                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 525                 if (req->rq_oi.oi_md == NULL) {
 526                         OBD_FREE(req, sizeof(*req));
 527                         GOTO(out_set, rc = -ENOMEM);
 528                 }
 529
 530                 req->rq_idx = loi->loi_ost_idx;
 531                 req->rq_stripe = i;
 532
 533                 /* XXX LOV STACKING: submd should be from the subobj */
 534                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 535                 req->rq_oi.oi_md->lsm_object_gr = lsm->lsm_object_gr;
 536                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 537
 538                 lov_set_add_req(req, set);
 539         }
 540         if (!set->set_count)
 541                 GOTO(out_set, rc = -EIO);
 542         *reqset = set;
 543         RETURN(rc);
 544 out_set:
 545         lov_fini_cancel_set(set);
 546         RETURN(rc);
 547 }
 548
 549 static int create_done(struct obd_export *exp, struct lov_request_set *set,
 550                        struct lov_stripe_md **lsmp)
 551 {
 552         struct lov_obd *lov = &exp->exp_obd->u.lov;
 553         struct obd_trans_info *oti = set->set_oti;
 554         struct obdo *src_oa = set->set_oi->oi_oa;
 555         struct lov_request *req;
 556         struct obdo *ret_oa = NULL;
 557         int attrset = 0, rc = 0;
 558         ENTRY;
 559
 560         LASSERT(set->set_completes);
 561
 562         /* try alloc objects on other osts if osc_create fails for
 563          * exceptions: RPC failure, ENOSPC, etc */
 564         if (set->set_count != set->set_success) {
 565                 list_for_each_entry (req, &set->set_list, rq_link) {
 566                         if (req->rq_rc == 0)
 567                                 continue;
 568
 569                         set->set_completes--;
 570                         req->rq_complete = 0;
 571
 572                         rc = qos_remedy_create(set, req);
 573                         lov_update_create_set(set, req, rc);
 574
 575                         if (rc)
 576                                 break;
 577                 }
 578         }
 579
 580         /* no successful creates */
 581         if (set->set_success == 0)
 582                 GOTO(cleanup, rc);
 583
 584         /* If there was an explicit stripe set, fail.  Otherwise, we
 585          * got some objects and that's not bad. */
 586         if (set->set_count != set->set_success) {
 587                 if (*lsmp)
 588                         GOTO(cleanup, rc);
 589                 set->set_count = set->set_success;
 590                 qos_shrink_lsm(set);
 591         }
 592
 593         OBDO_ALLOC(ret_oa);
 594         if (ret_oa == NULL)
 595                 GOTO(cleanup, rc = -ENOMEM);
 596
 597         list_for_each_entry(req, &set->set_list, rq_link) {
 598                 if (!req->rq_complete || req->rq_rc)
 599                         continue;
 600                 lov_merge_attrs(ret_oa, req->rq_oi.oi_oa,
 601                                 req->rq_oi.oi_oa->o_valid, set->set_oi->oi_md,
 602                                 req->rq_stripe, &attrset);
 603         }
 604         if (src_oa->o_valid & OBD_MD_FLSIZE &&
 605             ret_oa->o_size != src_oa->o_size) {
 606                 CERROR("original size "LPU64" isn't new object size "LPU64"\n",
 607                        src_oa->o_size, ret_oa->o_size);
 608                 LBUG();
 609         }
 610         ret_oa->o_id = src_oa->o_id;
 611         ret_oa->o_gr = src_oa->o_gr;
 612         ret_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
 613         memcpy(src_oa, ret_oa, sizeof(*src_oa));
 614         OBDO_FREE(ret_oa);
 615
 616         *lsmp = set->set_oi->oi_md;
 617         GOTO(done, rc = 0);
 618
 619 cleanup:
 620         list_for_each_entry(req, &set->set_list, rq_link) {
 621                 struct obd_export *sub_exp;
 622                 int err = 0;
 623
 624                 if (!req->rq_complete || req->rq_rc)
 625                         continue;
 626
 627                 sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp;
 628                 err = obd_destroy(sub_exp, req->rq_oi.oi_oa, NULL, oti, NULL);
 629                 if (err)
 630                         CERROR("Failed to uncreate objid "LPX64" subobj "
 631                                LPX64" on OST idx %d: rc = %d\n",
 632                                src_oa->o_id, req->rq_oi.oi_oa->o_id,
 633                                req->rq_idx, rc);
 634         }
 635         if (*lsmp == NULL)
 636                 obd_free_memmd(exp, &set->set_oi->oi_md);
 637 done:
 638         if (oti && set->set_cookies) {
 639                 oti->oti_logcookies = set->set_cookies;
 640                 if (!set->set_cookie_sent) {
 641                         oti_free_cookies(oti);
 642                         src_oa->o_valid &= ~OBD_MD_FLCOOKIE;
 643                 } else {
 644                         src_oa->o_valid |= OBD_MD_FLCOOKIE;
 645                 }
 646         }
 647         RETURN(rc);
 648 }
 649
 650 int lov_fini_create_set(struct lov_request_set *set,struct lov_stripe_md **lsmp)
 651 {
 652         int rc = 0;
 653         ENTRY;
 654
 655         if (set == NULL)
 656                 RETURN(0);
 657         LASSERT(set->set_exp);
 658         if (set->set_completes)
 659                 rc = create_done(set->set_exp, set, lsmp);
 660
 661         if (atomic_dec_and_test(&set->set_refcount))
 662                 lov_finish_set(set);
 663
 664         RETURN(rc);
 665 }
 666
 667 int lov_update_create_set(struct lov_request_set *set,
 668                           struct lov_request *req, int rc)
 669 {
 670         struct obd_trans_info *oti = set->set_oti;
 671         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 672         struct lov_oinfo *loi;
 673         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 674         ENTRY;
 675
 676         req->rq_stripe = set->set_success;
 677         loi = lsm->lsm_oinfo[req->rq_stripe];
 678
 679         if (rc && lov->lov_tgts[req->rq_idx] &&
 680             lov->lov_tgts[req->rq_idx]->ltd_active) {
 681                 CERROR("error creating fid "LPX64" sub-object"
 682                        " on OST idx %d/%d: rc = %d\n",
 683                        set->set_oi->oi_oa->o_id, req->rq_idx,
 684                        lsm->lsm_stripe_count, rc);
 685                 if (rc > 0) {
 686                         CERROR("obd_create returned invalid err %d\n", rc);
 687                         rc = -EIO;
 688                 }
 689         }
 690         lov_update_set(set, req, rc);
 691         if (rc)
 692                 RETURN(rc);
 693
 694         loi->loi_id = req->rq_oi.oi_oa->o_id;
 695         loi->loi_gr = req->rq_oi.oi_oa->o_gr;
 696         loi->loi_ost_idx = req->rq_idx;
 697         CDEBUG(D_INODE, "objid "LPX64" has subobj "LPX64"/"LPU64" at idx %d\n",
 698                lsm->lsm_object_id, loi->loi_id, loi->loi_id, req->rq_idx);
 699         loi_init(loi);
 700
 701         if (oti && set->set_cookies)
 702                 ++oti->oti_logcookies;
 703         if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCOOKIE)
 704                 set->set_cookie_sent++;
 705
 706         RETURN(0);
 707 }
 708
 709 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oinfo,
 710                         struct lov_stripe_md **lsmp, struct obdo *src_oa,
 711                         struct obd_trans_info *oti,
 712                         struct lov_request_set **reqset)
 713 {
 714         struct lov_request_set *set;
 715         int rc = 0;
 716         ENTRY;
 717
 718         OBD_ALLOC(set, sizeof(*set));
 719         if (set == NULL)
 720                 RETURN(-ENOMEM);
 721         lov_init_set(set);
 722
 723         set->set_exp = exp;
 724         set->set_oi = oinfo;
 725         set->set_oi->oi_md = *lsmp;
 726         set->set_oi->oi_oa = src_oa;
 727         set->set_oti = oti;
 728
 729         rc = qos_prep_create(exp, set);
 730         if (rc)
 731                 lov_fini_create_set(set, lsmp);
 732         else
 733                 *reqset = set;
 734         RETURN(rc);
 735 }
 736
 737 static int common_attr_done(struct lov_request_set *set)
 738 {
 739         struct list_head *pos;
 740         struct lov_request *req;
 741         struct obdo *tmp_oa;
 742         int rc = 0, attrset = 0;
 743         ENTRY;
 744
 745         LASSERT(set->set_oi != NULL);
 746
 747         if (set->set_oi->oi_oa == NULL)
 748                 RETURN(0);
 749
 750         if (!set->set_success)
 751                 RETURN(-EIO);
 752
 753         OBDO_ALLOC(tmp_oa);
 754         if (tmp_oa == NULL)
 755                 GOTO(out, rc = -ENOMEM);
 756
 757         list_for_each (pos, &set->set_list) {
 758                 req = list_entry(pos, struct lov_request, rq_link);
 759
 760                 if (!req->rq_complete || req->rq_rc)
 761                         continue;
 762                 if (req->rq_oi.oi_oa->o_valid == 0)   /* inactive stripe */
 763                         continue;
 764                 lov_merge_attrs(tmp_oa, req->rq_oi.oi_oa,
 765                                 req->rq_oi.oi_oa->o_valid,
 766                                 set->set_oi->oi_md, req->rq_stripe, &attrset);
 767         }
 768         if (!attrset) {
 769                 CERROR("No stripes had valid attrs\n");
 770                 rc = -EIO;
 771         }
 772         tmp_oa->o_id = set->set_oi->oi_oa->o_id;
 773         memcpy(set->set_oi->oi_oa, tmp_oa, sizeof(*set->set_oi->oi_oa));
 774 out:
 775         if (tmp_oa)
 776                 OBDO_FREE(tmp_oa);
 777         RETURN(rc);
 778
 779 }
 780
 781 static int brw_done(struct lov_request_set *set)
 782 {
 783         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 784         struct lov_oinfo     *loi = NULL;
 785         struct list_head *pos;
 786         struct lov_request *req;
 787         ENTRY;
 788
 789         list_for_each (pos, &set->set_list) {
 790                 req = list_entry(pos, struct lov_request, rq_link);
 791
 792                 if (!req->rq_complete || req->rq_rc)
 793                         continue;
 794
 795                 loi = lsm->lsm_oinfo[req->rq_stripe];
 796
 797                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS)
 798                         loi->loi_lvb.lvb_blocks = req->rq_oi.oi_oa->o_blocks;
 799         }
 800
 801         RETURN(0);
 802 }
 803
 804 int lov_fini_brw_set(struct lov_request_set *set)
 805 {
 806         int rc = 0;
 807         ENTRY;
 808
 809         if (set == NULL)
 810                 RETURN(0);
 811         LASSERT(set->set_exp);
 812         if (set->set_completes) {
 813                 rc = brw_done(set);
 814                 /* FIXME update qos data here */
 815         }
 816         if (atomic_dec_and_test(&set->set_refcount))
 817                 lov_finish_set(set);
 818
 819         RETURN(rc);
 820 }
 821
 822 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
 823                      obd_count oa_bufs, struct brw_page *pga,
 824                      struct obd_trans_info *oti,
 825                      struct lov_request_set **reqset)
 826 {
 827         struct {
 828                 obd_count       index;
 829                 obd_count       count;
 830                 obd_count       off;
 831         } *info = NULL;
 832         struct lov_request_set *set;
 833         struct lov_obd *lov = &exp->exp_obd->u.lov;
 834         int rc = 0, i, shift;
 835         ENTRY;
 836
 837         OBD_ALLOC(set, sizeof(*set));
 838         if (set == NULL)
 839                 RETURN(-ENOMEM);
 840         lov_init_set(set);
 841
 842         set->set_exp = exp;
 843         set->set_oti = oti;
 844         set->set_oi = oinfo;
 845         set->set_oabufs = oa_bufs;
 846         OBD_ALLOC(set->set_pga, oa_bufs * sizeof(*set->set_pga));
 847         if (!set->set_pga)
 848                 GOTO(out, rc = -ENOMEM);
 849
 850         OBD_ALLOC(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 851         if (!info)
 852                 GOTO(out, rc = -ENOMEM);
 853
 854         /* calculate the page count for each stripe */
 855         for (i = 0; i < oa_bufs; i++) {
 856                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 857                 info[stripe].count++;
 858         }
 859
 860         /* alloc and initialize lov request */
 861         shift = 0;
 862         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++){
 863                 struct lov_oinfo *loi = NULL;
 864                 struct lov_request *req;
 865
 866                 if (info[i].count == 0)
 867                         continue;
 868
 869                 loi = oinfo->oi_md->lsm_oinfo[i];
 870                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 871                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 872                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 873                         GOTO(out, rc = -EIO);
 874                 }
 875
 876                 OBD_ALLOC(req, sizeof(*req));
 877                 if (req == NULL)
 878                         GOTO(out, rc = -ENOMEM);
 879
 880                 OBDO_ALLOC(req->rq_oi.oi_oa);
 881                 if (req->rq_oi.oi_oa == NULL) {
 882                         OBD_FREE(req, sizeof(*req));
 883                         GOTO(out, rc = -ENOMEM);
 884                 }
 885
 886                 if (oinfo->oi_oa) {
 887                         memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
 888                                sizeof(*req->rq_oi.oi_oa));
 889                 }
 890                 req->rq_oi.oi_oa->o_id = loi->loi_id;
 891                 req->rq_oi.oi_oa->o_stripe_idx = i;
 892
 893                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 894                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 895                 if (req->rq_oi.oi_md == NULL) {
 896                         OBDO_FREE(req->rq_oi.oi_oa);
 897                         OBD_FREE(req, sizeof(*req));
 898                         GOTO(out, rc = -ENOMEM);
 899                 }
 900
 901                 req->rq_idx = loi->loi_ost_idx;
 902                 req->rq_stripe = i;
 903
 904                 /* XXX LOV STACKING */
 905                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 906                 req->rq_oi.oi_md->lsm_object_gr = oinfo->oi_md->lsm_object_gr;
 907                 req->rq_oabufs = info[i].count;
 908                 req->rq_pgaidx = shift;
 909                 shift += req->rq_oabufs;
 910
 911                 /* remember the index for sort brw_page array */
 912                 info[i].index = req->rq_pgaidx;
 913
 914                 req->rq_oi.oi_capa = oinfo->oi_capa;
 915
 916                 lov_set_add_req(req, set);
 917         }
 918         if (!set->set_count)
 919                 GOTO(out, rc = -EIO);
 920
 921         /* rotate & sort the brw_page array */
 922         for (i = 0; i < oa_bufs; i++) {
 923                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 924
 925                 shift = info[stripe].index + info[stripe].off;
 926                 LASSERT(shift < oa_bufs);
 927                 set->set_pga[shift] = pga[i];
 928                 lov_stripe_offset(oinfo->oi_md, pga[i].off, stripe,
 929                                   &set->set_pga[shift].off);
 930                 info[stripe].off++;
 931         }
 932 out:
 933         if (info)
 934                 OBD_FREE(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 935
 936         if (rc == 0)
 937                 *reqset = set;
 938         else
 939                 lov_fini_brw_set(set);
 940
 941         RETURN(rc);
 942 }
 943
 944 int lov_fini_getattr_set(struct lov_request_set *set)
 945 {
 946         int rc = 0;
 947         ENTRY;
 948
 949         if (set == NULL)
 950                 RETURN(0);
 951         LASSERT(set->set_exp);
 952         if (set->set_completes)
 953                 rc = common_attr_done(set);
 954
 955         if (atomic_dec_and_test(&set->set_refcount))
 956                 lov_finish_set(set);
 957
 958         RETURN(rc);
 959 }
 960
 961 /* The callback for osc_getattr_async that finilizes a request info when a
 962  * response is recieved. */
 963 static int cb_getattr_update(struct obd_info *oinfo, int rc)
 964 {
 965         struct lov_request *lovreq;
 966         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 967         return lov_update_common_set(lovreq->rq_rqset, lovreq, rc);
 968 }
 969
 970 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
 971                          struct lov_request_set **reqset)
 972 {
 973         struct lov_request_set *set;
 974         struct lov_obd *lov = &exp->exp_obd->u.lov;
 975         int rc = 0, i;
 976         ENTRY;
 977
 978         OBD_ALLOC(set, sizeof(*set));
 979         if (set == NULL)
 980                 RETURN(-ENOMEM);
 981         lov_init_set(set);
 982
 983         set->set_exp = exp;
 984         set->set_oi = oinfo;
 985
 986         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
 987                 struct lov_oinfo *loi;
 988                 struct lov_request *req;
 989
 990                 loi = oinfo->oi_md->lsm_oinfo[i];
 991                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 992                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 993                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 994                         continue;
 995                 }
 996
 997                 OBD_ALLOC(req, sizeof(*req));
 998                 if (req == NULL)
 999                         GOTO(out_set, rc = -ENOMEM);
1000
1001                 req->rq_stripe = i;
1002                 req->rq_idx = loi->loi_ost_idx;
1003
1004                 OBDO_ALLOC(req->rq_oi.oi_oa);
1005                 if (req->rq_oi.oi_oa == NULL) {
1006                         OBD_FREE(req, sizeof(*req));
1007                         GOTO(out_set, rc = -ENOMEM);
1008                 }
1009                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1010                        sizeof(*req->rq_oi.oi_oa));
1011                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1012                 req->rq_oi.oi_cb_up = cb_getattr_update;
1013                 req->rq_oi.oi_capa = oinfo->oi_capa;
1014                 req->rq_rqset = set;
1015
1016                 lov_set_add_req(req, set);
1017         }
1018         if (!set->set_count)
1019                 GOTO(out_set, rc = -EIO);
1020         *reqset = set;
1021         RETURN(rc);
1022 out_set:
1023         lov_fini_getattr_set(set);
1024         RETURN(rc);
1025 }
1026
1027 int lov_fini_destroy_set(struct lov_request_set *set)
1028 {
1029         ENTRY;
1030
1031         if (set == NULL)
1032                 RETURN(0);
1033         LASSERT(set->set_exp);
1034         if (set->set_completes) {
1035                 /* FIXME update qos data here */
1036         }
1037
1038         if (atomic_dec_and_test(&set->set_refcount))
1039                 lov_finish_set(set);
1040
1041         RETURN(0);
1042 }
1043
1044 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
1045                          struct obdo *src_oa, struct lov_stripe_md *lsm,
1046                          struct obd_trans_info *oti,
1047                          struct lov_request_set **reqset)
1048 {
1049         struct lov_request_set *set;
1050         struct lov_obd *lov = &exp->exp_obd->u.lov;
1051         int rc = 0, i;
1052         ENTRY;
1053
1054         OBD_ALLOC(set, sizeof(*set));
1055         if (set == NULL)
1056                 RETURN(-ENOMEM);
1057         lov_init_set(set);
1058
1059         set->set_exp = exp;
1060         set->set_oi = oinfo;
1061         set->set_oi->oi_md = lsm;
1062         set->set_oi->oi_oa = src_oa;
1063         set->set_oti = oti;
1064         if (oti != NULL && src_oa->o_valid & OBD_MD_FLCOOKIE)
1065                 set->set_cookies = oti->oti_logcookies;
1066
1067         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1068                 struct lov_oinfo *loi;
1069                 struct lov_request *req;
1070
1071                 loi = lsm->lsm_oinfo[i];
1072                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1073                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1074                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1075                         continue;
1076                 }
1077
1078                 OBD_ALLOC(req, sizeof(*req));
1079                 if (req == NULL)
1080                         GOTO(out_set, rc = -ENOMEM);
1081
1082                 req->rq_stripe = i;
1083                 req->rq_idx = loi->loi_ost_idx;
1084
1085                 OBDO_ALLOC(req->rq_oi.oi_oa);
1086                 if (req->rq_oi.oi_oa == NULL) {
1087                         OBD_FREE(req, sizeof(*req));
1088                         GOTO(out_set, rc = -ENOMEM);
1089                 }
1090                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1091                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1092                 lov_set_add_req(req, set);
1093         }
1094         if (!set->set_count)
1095                 GOTO(out_set, rc = -EIO);
1096         *reqset = set;
1097         RETURN(rc);
1098 out_set:
1099         lov_fini_destroy_set(set);
1100         RETURN(rc);
1101 }
1102
1103 int lov_fini_setattr_set(struct lov_request_set *set)
1104 {
1105         int rc = 0;
1106         ENTRY;
1107
1108         if (set == NULL)
1109                 RETURN(0);
1110         LASSERT(set->set_exp);
1111         if (set->set_completes) {
1112                 rc = common_attr_done(set);
1113                 /* FIXME update qos data here */
1114         }
1115
1116         if (atomic_dec_and_test(&set->set_refcount))
1117                 lov_finish_set(set);
1118         RETURN(rc);
1119 }
1120
1121 int lov_update_setattr_set(struct lov_request_set *set,
1122                            struct lov_request *req, int rc)
1123 {
1124         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1125         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1126         ENTRY;
1127
1128         lov_update_set(set, req, rc);
1129
1130         /* grace error on inactive ost */
1131         if (rc && !(lov->lov_tgts[req->rq_idx] &&
1132                     lov->lov_tgts[req->rq_idx]->ltd_active))
1133                 rc = 0;
1134
1135         if (rc == 0) {
1136                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCTIME)
1137                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_ctime =
1138                                 req->rq_oi.oi_oa->o_ctime;
1139                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLMTIME)
1140                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_mtime =
1141                                 req->rq_oi.oi_oa->o_mtime;
1142                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLATIME)
1143                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_atime =
1144                                 req->rq_oi.oi_oa->o_atime;
1145         }
1146
1147         RETURN(rc);
1148 }
1149
1150 /* The callback for osc_setattr_async that finilizes a request info when a
1151  * response is recieved. */
1152 static int cb_setattr_update(struct obd_info *oinfo, int rc)
1153 {
1154         struct lov_request *lovreq;
1155         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1156         return lov_update_setattr_set(lovreq->rq_rqset, lovreq, rc);
1157 }
1158
1159 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
1160                          struct obd_trans_info *oti,
1161                          struct lov_request_set **reqset)
1162 {
1163         struct lov_request_set *set;
1164         struct lov_obd *lov = &exp->exp_obd->u.lov;
1165         int rc = 0, i;
1166         ENTRY;
1167
1168         OBD_ALLOC(set, sizeof(*set));
1169         if (set == NULL)
1170                 RETURN(-ENOMEM);
1171         lov_init_set(set);
1172
1173         set->set_exp = exp;
1174         set->set_oti = oti;
1175         set->set_oi = oinfo;
1176         if (oti != NULL && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
1177                 set->set_cookies = oti->oti_logcookies;
1178
1179         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1180                 struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
1181                 struct lov_request *req;
1182
1183                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1184                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1185                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1186                         continue;
1187                 }
1188
1189                 OBD_ALLOC(req, sizeof(*req));
1190                 if (req == NULL)
1191                         GOTO(out_set, rc = -ENOMEM);
1192                 req->rq_stripe = i;
1193                 req->rq_idx = loi->loi_ost_idx;
1194
1195                 OBDO_ALLOC(req->rq_oi.oi_oa);
1196                 if (req->rq_oi.oi_oa == NULL) {
1197                         OBD_FREE(req, sizeof(*req));
1198                         GOTO(out_set, rc = -ENOMEM);
1199                 }
1200                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1201                        sizeof(*req->rq_oi.oi_oa));
1202                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1203                 LASSERT(!(req->rq_oi.oi_oa->o_valid & OBD_MD_FLGROUP)
1204                                 || req->rq_oi.oi_oa->o_gr>0);
1205                 req->rq_oi.oi_oa->o_stripe_idx = i;
1206                 req->rq_oi.oi_cb_up = cb_setattr_update;
1207                 req->rq_oi.oi_capa = oinfo->oi_capa;
1208                 req->rq_rqset = set;
1209
1210                 if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE) {
1211                         int off = lov_stripe_offset(oinfo->oi_md,
1212                                                     oinfo->oi_oa->o_size, i,
1213                                                     &req->rq_oi.oi_oa->o_size);
1214
1215                         if (off < 0 && req->rq_oi.oi_oa->o_size)
1216                                 req->rq_oi.oi_oa->o_size--;
1217
1218                         CDEBUG(D_INODE, "stripe %d has size "LPU64"/"LPU64"\n",
1219                                i, req->rq_oi.oi_oa->o_size,
1220                                oinfo->oi_oa->o_size);
1221                 }
1222                 lov_set_add_req(req, set);
1223         }
1224         if (!set->set_count)
1225                 GOTO(out_set, rc = -EIO);
1226         *reqset = set;
1227         RETURN(rc);
1228 out_set:
1229         lov_fini_setattr_set(set);
1230         RETURN(rc);
1231 }
1232
1233 int lov_fini_punch_set(struct lov_request_set *set)
1234 {
1235         int rc = 0;
1236         ENTRY;
1237
1238         if (set == NULL)
1239                 RETURN(0);
1240         LASSERT(set->set_exp);
1241         if (set->set_completes) {
1242                 rc = -EIO;
1243                 /* FIXME update qos data here */
1244                 if (set->set_success)
1245                         rc = common_attr_done(set);
1246         }
1247
1248         if (atomic_dec_and_test(&set->set_refcount))
1249                 lov_finish_set(set);
1250
1251         RETURN(rc);
1252 }
1253
1254 int lov_update_punch_set(struct lov_request_set *set,
1255                          struct lov_request *req, int rc)
1256 {
1257         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1258         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1259         ENTRY;
1260
1261         lov_update_set(set, req, rc);
1262
1263         /* grace error on inactive ost */
1264         if (rc && !lov->lov_tgts[req->rq_idx]->ltd_active)
1265                 rc = 0;
1266
1267         if (rc == 0) {
1268                 lov_stripe_lock(lsm);
1269                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS) {
1270                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_blocks =
1271                                 req->rq_oi.oi_oa->o_blocks;
1272                 }
1273
1274                 /* Do we need to update lvb_size here? It needn't because
1275                  * it have been done in ll_truncate(). -jay */
1276                 lov_stripe_unlock(lsm);
1277         }
1278
1279         RETURN(rc);
1280 }
1281
1282 /* The callback for osc_punch that finilizes a request info when a response
1283  * is recieved. */
1284 static int cb_update_punch(struct obd_info *oinfo, int rc)
1285 {
1286         struct lov_request *lovreq;
1287         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1288         return lov_update_punch_set(lovreq->rq_rqset, lovreq, rc);
1289 }
1290
1291 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
1292                        struct obd_trans_info *oti,
1293                        struct lov_request_set **reqset)
1294 {
1295         struct lov_request_set *set;
1296         struct lov_obd *lov = &exp->exp_obd->u.lov;
1297         int rc = 0, i;
1298         ENTRY;
1299
1300         OBD_ALLOC(set, sizeof(*set));
1301         if (set == NULL)
1302                 RETURN(-ENOMEM);
1303         lov_init_set(set);
1304
1305         set->set_oi = oinfo;
1306         set->set_exp = exp;
1307
1308         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1309                 struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
1310                 struct lov_request *req;
1311                 obd_off rs, re;
1312
1313                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1314                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1315                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1316                         continue;
1317                 }
1318
1319                 if (!lov_stripe_intersects(oinfo->oi_md, i,
1320                                            oinfo->oi_policy.l_extent.start,
1321                                            oinfo->oi_policy.l_extent.end,
1322                                            &rs, &re))
1323                         continue;
1324
1325                 OBD_ALLOC(req, sizeof(*req));
1326                 if (req == NULL)
1327                         GOTO(out_set, rc = -ENOMEM);
1328                 req->rq_stripe = i;
1329                 req->rq_idx = loi->loi_ost_idx;
1330
1331                 OBDO_ALLOC(req->rq_oi.oi_oa);
1332                 if (req->rq_oi.oi_oa == NULL) {
1333                         OBD_FREE(req, sizeof(*req));
1334                         GOTO(out_set, rc = -ENOMEM);
1335                 }
1336                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1337                        sizeof(*req->rq_oi.oi_oa));
1338                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1339                 req->rq_oi.oi_oa->o_gr = loi->loi_gr;
1340                 req->rq_oi.oi_oa->o_valid |= OBD_MD_FLGROUP;
1341
1342                 req->rq_oi.oi_oa->o_stripe_idx = i;
1343                 req->rq_oi.oi_cb_up = cb_update_punch;
1344                 req->rq_rqset = set;
1345
1346                 req->rq_oi.oi_policy.l_extent.start = rs;
1347                 req->rq_oi.oi_policy.l_extent.end = re;
1348                 req->rq_oi.oi_policy.l_extent.gid = -1;
1349
1350                 req->rq_oi.oi_capa = oinfo->oi_capa;
1351
1352                 lov_set_add_req(req, set);
1353         }
1354         if (!set->set_count)
1355                 GOTO(out_set, rc = -EIO);
1356         *reqset = set;
1357         RETURN(rc);
1358 out_set:
1359         lov_fini_punch_set(set);
1360         RETURN(rc);
1361 }
1362
1363 int lov_fini_sync_set(struct lov_request_set *set)
1364 {
1365         int rc = 0;
1366         ENTRY;
1367
1368         if (set == NULL)
1369                 RETURN(0);
1370         LASSERT(set->set_exp);
1371         if (set->set_completes) {
1372                 if (!set->set_success)
1373                         rc = -EIO;
1374                 /* FIXME update qos data here */
1375         }
1376
1377         if (atomic_dec_and_test(&set->set_refcount))
1378                 lov_finish_set(set);
1379
1380         RETURN(rc);
1381 }
1382
1383 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *oinfo,
1384                       struct obdo *src_oa, struct lov_stripe_md *lsm,
1385                       obd_off start, obd_off end,
1386                       struct lov_request_set **reqset)
1387 {
1388         struct lov_request_set *set;
1389         struct lov_obd *lov = &exp->exp_obd->u.lov;
1390         int rc = 0, i;
1391         ENTRY;
1392
1393         OBD_ALLOC(set, sizeof(*set));
1394         if (set == NULL)
1395                 RETURN(-ENOMEM);
1396         lov_init_set(set);
1397
1398         set->set_exp = exp;
1399         set->set_oi = oinfo;
1400         set->set_oi->oi_md = lsm;
1401         set->set_oi->oi_oa = src_oa;
1402
1403         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1404                 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
1405                 struct lov_request *req;
1406                 obd_off rs, re;
1407
1408                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1409                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1410                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1411                         continue;
1412                 }
1413
1414                 if (!lov_stripe_intersects(lsm, i, start, end, &rs, &re))
1415                         continue;
1416
1417                 OBD_ALLOC(req, sizeof(*req));
1418                 if (req == NULL)
1419                         GOTO(out_set, rc = -ENOMEM);
1420                 req->rq_stripe = i;
1421                 req->rq_idx = loi->loi_ost_idx;
1422
1423                 OBDO_ALLOC(req->rq_oi.oi_oa);
1424                 if (req->rq_oi.oi_oa == NULL) {
1425                         OBD_FREE(req, sizeof(*req));
1426                         GOTO(out_set, rc = -ENOMEM);
1427                 }
1428                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1429                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1430                 req->rq_oi.oi_oa->o_stripe_idx = i;
1431
1432                 req->rq_oi.oi_policy.l_extent.start = rs;
1433                 req->rq_oi.oi_policy.l_extent.end = re;
1434                 req->rq_oi.oi_policy.l_extent.gid = -1;
1435
1436                 lov_set_add_req(req, set);
1437         }
1438         if (!set->set_count)
1439                 GOTO(out_set, rc = -EIO);
1440         *reqset = set;
1441         RETURN(rc);
1442 out_set:
1443         lov_fini_sync_set(set);
1444         RETURN(rc);
1445 }
1446
1447 #define LOV_U64_MAX ((__u64)~0ULL)
1448 #define LOV_SUM_MAX(tot, add)                                           \
1449         do {                                                            \
1450                 if ((tot) + (add) < (tot))                              \
1451                         (tot) = LOV_U64_MAX;                            \
1452                 else                                                    \
1453                         (tot) += (add);                                 \
1454         } while(0)
1455
1456 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,int success)
1457 {
1458         ENTRY;
1459
1460         if (success) {
1461                 __u32 expected_stripes = lov_get_stripecnt(&obd->u.lov, 0);
1462
1463                 if (osfs->os_files != LOV_U64_MAX)
1464                         do_div(osfs->os_files, expected_stripes);
1465                 if (osfs->os_ffree != LOV_U64_MAX)
1466                         do_div(osfs->os_ffree, expected_stripes);
1467
1468                 spin_lock(&obd->obd_osfs_lock);
1469                 memcpy(&obd->obd_osfs, osfs, sizeof(*osfs));
1470                 obd->obd_osfs_age = get_jiffies_64();
1471                 spin_unlock(&obd->obd_osfs_lock);
1472                 RETURN(0);
1473         }
1474
1475         RETURN(-EIO);
1476 }
1477
1478 int lov_fini_statfs_set(struct lov_request_set *set)
1479 {
1480         int rc = 0;
1481         ENTRY;
1482
1483         if (set == NULL)
1484                 RETURN(0);
1485
1486         if (set->set_completes) {
1487                 rc = lov_fini_statfs(set->set_obd, set->set_oi->oi_osfs,
1488                                      set->set_success);
1489         }
1490
1491         if (atomic_dec_and_test(&set->set_refcount))
1492                 lov_finish_set(set);
1493
1494         RETURN(rc);
1495 }
1496
1497 void lov_update_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1498                        struct obd_statfs *lov_sfs, int success)
1499 {
1500         int shift = 0, quit = 0;
1501         __u64 tmp;
1502         spin_lock(&obd->obd_osfs_lock);
1503         memcpy(&obd->obd_osfs, lov_sfs, sizeof(*lov_sfs));
1504         obd->obd_osfs_age = get_jiffies_64();
1505         spin_unlock(&obd->obd_osfs_lock);
1506
1507         if (success == 0) {
1508                 memcpy(osfs, lov_sfs, sizeof(*lov_sfs));
1509         } else {
1510                 if (osfs->os_bsize != lov_sfs->os_bsize) {
1511                         /* assume all block sizes are always powers of 2 */
1512                         /* get the bits difference */
1513                         tmp = osfs->os_bsize | lov_sfs->os_bsize;
1514                         for (shift = 0; shift <= 64; ++shift) {
1515                                 if (tmp & 1) {
1516                                         if (quit)
1517                                                 break;
1518                                         else
1519                                                 quit = 1;
1520                                         shift = 0;
1521                                 }
1522                                 tmp >>= 1;
1523                         }
1524                 }
1525
1526                 if (osfs->os_bsize < lov_sfs->os_bsize) {
1527                         osfs->os_bsize = lov_sfs->os_bsize;
1528
1529                         osfs->os_bfree  >>= shift;
1530                         osfs->os_bavail >>= shift;
1531                         osfs->os_blocks >>= shift;
1532                 } else if (shift != 0) {
1533                         lov_sfs->os_bfree  >>= shift;
1534                         lov_sfs->os_bavail >>= shift;
1535                         lov_sfs->os_blocks >>= shift;
1536                 }
1537 #ifdef MIN_DF
1538                 /* Sandia requested that df (and so, statfs) only
1539                    returned minimal available space on
1540                    a single OST, so people would be able to
1541                    write this much data guaranteed. */
1542                 if (osfs->os_bavail > lov_sfs->os_bavail) {
1543                         /* Presumably if new bavail is smaller,
1544                            new bfree is bigger as well */
1545                         osfs->os_bfree = lov_sfs->os_bfree;
1546                         osfs->os_bavail = lov_sfs->os_bavail;
1547                 }
1548 #else
1549                 osfs->os_bfree += lov_sfs->os_bfree;
1550                 osfs->os_bavail += lov_sfs->os_bavail;
1551 #endif
1552                 osfs->os_blocks += lov_sfs->os_blocks;
1553                 /* XXX not sure about this one - depends on policy.
1554                  *   - could be minimum if we always stripe on all OBDs
1555                  *     (but that would be wrong for any other policy,
1556                  *     if one of the OBDs has no more objects left)
1557                  *   - could be sum if we stripe whole objects
1558                  *   - could be average, just to give a nice number
1559                  *
1560                  * To give a "reasonable" (if not wholly accurate)
1561                  * number, we divide the total number of free objects
1562                  * by expected stripe count (watch out for overflow).
1563                  */
1564                 LOV_SUM_MAX(osfs->os_files, lov_sfs->os_files);
1565                 LOV_SUM_MAX(osfs->os_ffree, lov_sfs->os_ffree);
1566         }
1567 }
1568
1569 /* The callback for osc_statfs_async that finilizes a request info when a
1570  * response is recieved. */
1571 static int cb_statfs_update(struct obd_info *oinfo, int rc)
1572 {
1573         struct lov_request *lovreq;
1574         struct obd_statfs *osfs, *lov_sfs;
1575         struct obd_device *obd;
1576         struct lov_obd *lov;
1577         int success;
1578         ENTRY;
1579
1580         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1581         lov = &lovreq->rq_rqset->set_obd->u.lov;
1582         obd = class_exp2obd(lov->lov_tgts[lovreq->rq_idx]->ltd_exp);
1583
1584         osfs = lovreq->rq_rqset->set_oi->oi_osfs;
1585         lov_sfs = oinfo->oi_osfs;
1586
1587         success = lovreq->rq_rqset->set_success;
1588
1589         /* XXX: the same is done in lov_update_common_set, however
1590            lovset->set_exp is not initialized. */
1591         lov_update_set(lovreq->rq_rqset, lovreq, rc);
1592         if (rc) {
1593                 if (rc && !(lov->lov_tgts[lovreq->rq_idx] &&
1594                             lov->lov_tgts[lovreq->rq_idx]->ltd_active))
1595                         rc = 0;
1596                 RETURN(rc);
1597         }
1598
1599         lov_update_statfs(obd, osfs, lov_sfs, success);
1600         qos_update(lov);
1601
1602         RETURN(0);
1603 }
1604
1605 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
1606                         struct lov_request_set **reqset)
1607 {
1608         struct lov_request_set *set;
1609         struct lov_obd *lov = &obd->u.lov;
1610         int rc = 0, i;
1611         ENTRY;
1612
1613         OBD_ALLOC(set, sizeof(*set));
1614         if (set == NULL)
1615                 RETURN(-ENOMEM);
1616         lov_init_set(set);
1617
1618         set->set_obd = obd;
1619         set->set_oi = oinfo;
1620
1621         /* We only get block data from the OBD */
1622         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
1623                 struct lov_request *req;
1624
1625                 if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_active) {
1626                         CDEBUG(D_HA, "lov idx %d inactive\n", i);
1627                         continue;
1628                 }
1629
1630                 OBD_ALLOC(req, sizeof(*req));
1631                 if (req == NULL)
1632                         GOTO(out_set, rc = -ENOMEM);
1633
1634                 OBD_ALLOC(req->rq_oi.oi_osfs, sizeof(*req->rq_oi.oi_osfs));
1635                 if (req->rq_oi.oi_osfs == NULL) {
1636                         OBD_FREE(req, sizeof(*req));
1637                         GOTO(out_set, rc = -ENOMEM);
1638                 }
1639
1640                 req->rq_idx = i;
1641                 req->rq_oi.oi_cb_up = cb_statfs_update;
1642                 req->rq_rqset = set;
1643
1644                 lov_set_add_req(req, set);
1645         }
1646         if (!set->set_count)
1647                 GOTO(out_set, rc = -EIO);
1648         *reqset = set;
1649         RETURN(rc);
1650 out_set:
1651         lov_fini_statfs_set(set);
1652         RETURN(rc);
1653 }