lustre/lov/lov_request.c

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