lustre/lov/lov_request.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #ifndef EXPORT_SYMTAB
  38 # define EXPORT_SYMTAB
  39 #endif
  40 #define DEBUG_SUBSYSTEM S_LOV
  41
  42 #ifdef __KERNEL__
  43 #include <libcfs/libcfs.h>
  44 #else
  45 #include <liblustre.h>
  46 #endif
  47
  48 #include <obd_class.h>
  49 #include <obd_lov.h>
  50 #include <lustre/lustre_idl.h>
  51
  52 #include "lov_internal.h"
  53
  54 static void lov_init_set(struct lov_request_set *set)
  55 {
  56         set->set_count = 0;
  57         set->set_completes = 0;
  58         set->set_success = 0;
  59         set->set_cookies = 0;
  60         CFS_INIT_LIST_HEAD(&set->set_list);
  61         atomic_set(&set->set_refcount, 1);
  62         cfs_waitq_init(&set->set_waitq);
  63         spin_lock_init(&set->set_lock);
  64 }
  65
  66 void lov_finish_set(struct lov_request_set *set)
  67 {
  68         struct list_head *pos, *n;
  69         ENTRY;
  70
  71         LASSERT(set);
  72         list_for_each_safe(pos, n, &set->set_list) {
  73                 struct lov_request *req = list_entry(pos, struct lov_request,
  74                                                      rq_link);
  75                 list_del_init(&req->rq_link);
  76
  77                 if (req->rq_oi.oi_oa)
  78                         OBDO_FREE(req->rq_oi.oi_oa);
  79                 if (req->rq_oi.oi_md)
  80                         OBD_FREE(req->rq_oi.oi_md, req->rq_buflen);
  81                 if (req->rq_oi.oi_osfs)
  82                         OBD_FREE(req->rq_oi.oi_osfs,
  83                                  sizeof(*req->rq_oi.oi_osfs));
  84                 OBD_FREE(req, sizeof(*req));
  85         }
  86
  87         if (set->set_pga) {
  88                 int len = set->set_oabufs * sizeof(*set->set_pga);
  89                 OBD_FREE(set->set_pga, len);
  90         }
  91         if (set->set_lockh)
  92                 lov_llh_put(set->set_lockh);
  93
  94         OBD_FREE(set, sizeof(*set));
  95         EXIT;
  96 }
  97
  98 int lov_finished_set(struct lov_request_set *set)
  99 {
 100         CDEBUG(D_INFO, "check set %d/%d\n", set->set_completes,
 101                set->set_count);
 102         return set->set_completes == set->set_count;
 103 }
 104
 105
 106 void lov_update_set(struct lov_request_set *set,
 107                     struct lov_request *req, int rc)
 108 {
 109         req->rq_complete = 1;
 110         req->rq_rc = rc;
 111
 112         set->set_completes++;
 113         if (rc == 0)
 114                 set->set_success++;
 115
 116         cfs_waitq_signal(&set->set_waitq);
 117 }
 118
 119 int lov_update_common_set(struct lov_request_set *set,
 120                           struct lov_request *req, int rc)
 121 {
 122         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 123         ENTRY;
 124
 125         lov_update_set(set, req, rc);
 126
 127         /* grace error on inactive ost */
 128         if (rc && !(lov->lov_tgts[req->rq_idx] &&
 129                     lov->lov_tgts[req->rq_idx]->ltd_active))
 130                 rc = 0;
 131
 132         /* FIXME in raid1 regime, should return 0 */
 133         RETURN(rc);
 134 }
 135
 136 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set)
 137 {
 138         list_add_tail(&req->rq_link, &set->set_list);
 139         set->set_count++;
 140         req->rq_rqset = set;
 141 }
 142
 143 int lov_update_enqueue_set(struct lov_request *req, __u32 mode, int rc)
 144 {
 145         struct lov_request_set *set = req->rq_rqset;
 146         struct lustre_handle *lov_lockhp;
 147         struct lov_oinfo *loi;
 148         ENTRY;
 149
 150         LASSERT(set != NULL);
 151         LASSERT(set->set_oi != NULL);
 152
 153         lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
 154         loi = set->set_oi->oi_md->lsm_oinfo[req->rq_stripe];
 155
 156         /* XXX LOV STACKING: OSC gets a copy, created in lov_prep_enqueue_set
 157          * and that copy can be arbitrarily out of date.
 158          *
 159          * The LOV API is due for a serious rewriting anyways, and this
 160          * can be addressed then. */
 161
 162         if (rc == ELDLM_OK) {
 163                 struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
 164                 __u64 tmp;
 165
 166                 LASSERT(lock != NULL);
 167                 lov_stripe_lock(set->set_oi->oi_md);
 168                 loi->loi_lvb = req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb;
 169                 tmp = loi->loi_lvb.lvb_size;
 170                 /* Extend KMS up to the end of this lock and no further
 171                  * A lock on [x,y] means a KMS of up to y + 1 bytes! */
 172                 if (tmp > lock->l_policy_data.l_extent.end)
 173                         tmp = lock->l_policy_data.l_extent.end + 1;
 174                 if (tmp >= loi->loi_kms) {
 175                         LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64
 176                                    ", kms="LPU64, loi->loi_lvb.lvb_size, tmp);
 177                         loi->loi_kms = tmp;
 178                         loi->loi_kms_valid = 1;
 179                 } else {
 180                         LDLM_DEBUG(lock, "lock acquired, setting rss="
 181                                    LPU64"; leaving kms="LPU64", end="LPU64,
 182                                    loi->loi_lvb.lvb_size, loi->loi_kms,
 183                                    lock->l_policy_data.l_extent.end);
 184                 }
 185                 lov_stripe_unlock(set->set_oi->oi_md);
 186                 ldlm_lock_allow_match(lock);
 187                 LDLM_LOCK_PUT(lock);
 188         } else if ((rc == ELDLM_LOCK_ABORTED) &&
 189                    (set->set_oi->oi_flags & LDLM_FL_HAS_INTENT)) {
 190                 memset(lov_lockhp, 0, sizeof(*lov_lockhp));
 191                 lov_stripe_lock(set->set_oi->oi_md);
 192                 loi->loi_lvb = req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb;
 193                 lov_stripe_unlock(set->set_oi->oi_md);
 194                 CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
 195                        " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms);
 196                 rc = ELDLM_OK;
 197         } else {
 198                 struct obd_export *exp = set->set_exp;
 199                 struct lov_obd *lov = &exp->exp_obd->u.lov;
 200
 201                 memset(lov_lockhp, 0, sizeof(*lov_lockhp));
 202                 if (lov->lov_tgts[req->rq_idx] &&
 203                     lov->lov_tgts[req->rq_idx]->ltd_active) {
 204                         /* -EUSERS used by OST to report file contention */
 205                         if (rc != -EINTR && rc != -EUSERS)
 206                                 CERROR("enqueue objid "LPX64" subobj "
 207                                        LPX64" on OST idx %d: rc %d\n",
 208                                        set->set_oi->oi_md->lsm_object_id,
 209                                        loi->loi_id, loi->loi_ost_idx, rc);
 210                 } else {
 211                         rc = ELDLM_OK;
 212                 }
 213         }
 214         lov_update_set(set, req, rc);
 215         RETURN(rc);
 216 }
 217
 218 /* The callback for osc_enqueue that updates lov info for every OSC request. */
 219 static int cb_update_enqueue(struct obd_info *oinfo, int rc)
 220 {
 221         struct ldlm_enqueue_info *einfo;
 222         struct lov_request *lovreq;
 223
 224         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 225         einfo = lovreq->rq_rqset->set_ei;
 226         return lov_update_enqueue_set(lovreq, einfo->ei_mode, rc);
 227 }
 228
 229 static int enqueue_done(struct lov_request_set *set, __u32 mode)
 230 {
 231         struct lov_request *req;
 232         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 233         int rc = 0;
 234         ENTRY;
 235
 236         /* enqueue/match success, just return */
 237         if (set->set_completes && set->set_completes == set->set_success)
 238                 RETURN(0);
 239
 240         /* cancel enqueued/matched locks */
 241         list_for_each_entry(req, &set->set_list, rq_link) {
 242                 struct lustre_handle *lov_lockhp;
 243
 244                 if (!req->rq_complete || req->rq_rc)
 245                         continue;
 246
 247                 lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
 248                 LASSERT(lov_lockhp);
 249                 if (!lustre_handle_is_used(lov_lockhp))
 250                         continue;
 251
 252                 rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp,
 253                                 req->rq_oi.oi_md, mode, lov_lockhp, 0, 0);
 254                 if (rc && lov->lov_tgts[req->rq_idx] &&
 255                     lov->lov_tgts[req->rq_idx]->ltd_active)
 256                         CERROR("cancelling obdjid "LPX64" on OST "
 257                                "idx %d error: rc = %d\n",
 258                                req->rq_oi.oi_md->lsm_object_id,
 259                                req->rq_idx, rc);
 260         }
 261         if (set->set_lockh)
 262                 lov_llh_put(set->set_lockh);
 263         RETURN(rc);
 264 }
 265
 266 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
 267                          struct ptlrpc_request_set *rqset)
 268 {
 269         int ret = 0;
 270         ENTRY;
 271
 272         if (set == NULL)
 273                 RETURN(0);
 274         LASSERT(set->set_exp);
 275         /* Do enqueue_done only for sync requests and if any request
 276          * succeeded. */
 277         if (!rqset) {
 278                 if (rc)
 279                         set->set_completes = 0;
 280                 ret = enqueue_done(set, mode);
 281         } else if (set->set_lockh)
 282                 lov_llh_put(set->set_lockh);
 283
 284         lov_put_reqset(set);
 285
 286         RETURN(rc ? rc : ret);
 287 }
 288
 289 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
 290                          struct ldlm_enqueue_info *einfo,
 291                          struct lov_request_set **reqset)
 292 {
 293         struct lov_obd *lov = &exp->exp_obd->u.lov;
 294         struct lov_request_set *set;
 295         int i, rc = 0;
 296         struct lov_oinfo *loi;
 297         ENTRY;
 298
 299         OBD_ALLOC(set, sizeof(*set));
 300         if (set == NULL)
 301                 RETURN(-ENOMEM);
 302         lov_init_set(set);
 303
 304         set->set_exp = exp;
 305         set->set_oi = oinfo;
 306         set->set_ei = einfo;
 307         set->set_lockh = lov_llh_new(oinfo->oi_md);
 308         if (set->set_lockh == NULL)
 309                 GOTO(out_set, rc = -ENOMEM);
 310         oinfo->oi_lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 311
 312         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
 313                 struct lov_request *req;
 314                 obd_off start, end;
 315
 316                 loi = oinfo->oi_md->lsm_oinfo[i];
 317                 if (!lov_stripe_intersects(oinfo->oi_md, i,
 318                                            oinfo->oi_policy.l_extent.start,
 319                                            oinfo->oi_policy.l_extent.end,
 320                                            &start, &end))
 321                         continue;
 322
 323                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 324                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 325                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 326                         continue;
 327                 }
 328
 329                 OBD_ALLOC(req, sizeof(*req));
 330                 if (req == NULL)
 331                         GOTO(out_set, rc = -ENOMEM);
 332
 333                 req->rq_buflen = sizeof(*req->rq_oi.oi_md) +
 334                         sizeof(struct lov_oinfo *) +
 335                         sizeof(struct lov_oinfo);
 336                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 337                 if (req->rq_oi.oi_md == NULL) {
 338                         OBD_FREE(req, sizeof(*req));
 339                         GOTO(out_set, rc = -ENOMEM);
 340                 }
 341                 req->rq_oi.oi_md->lsm_oinfo[0] =
 342                         ((void *)req->rq_oi.oi_md) + sizeof(*req->rq_oi.oi_md) +
 343                         sizeof(struct lov_oinfo *);
 344
 345                 /* Set lov request specific parameters. */
 346                 req->rq_oi.oi_lockh = set->set_lockh->llh_handles + i;
 347                 req->rq_oi.oi_cb_up = cb_update_enqueue;
 348                 req->rq_oi.oi_flags = oinfo->oi_flags;
 349
 350                 LASSERT(req->rq_oi.oi_lockh);
 351
 352                 req->rq_oi.oi_policy.l_extent.gid =
 353                         oinfo->oi_policy.l_extent.gid;
 354                 req->rq_oi.oi_policy.l_extent.start = start;
 355                 req->rq_oi.oi_policy.l_extent.end = end;
 356
 357                 req->rq_idx = loi->loi_ost_idx;
 358                 req->rq_stripe = i;
 359
 360                 /* XXX LOV STACKING: submd should be from the subobj */
 361                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 362                 req->rq_oi.oi_md->lsm_object_gr = loi->loi_gr;
 363                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 364                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_kms_valid =
 365                         loi->loi_kms_valid;
 366                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_kms = loi->loi_kms;
 367                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb = loi->loi_lvb;
 368
 369                 lov_set_add_req(req, set);
 370         }
 371         if (!set->set_count)
 372                 GOTO(out_set, rc = -EIO);
 373         *reqset = set;
 374         RETURN(0);
 375 out_set:
 376         lov_fini_enqueue_set(set, einfo->ei_mode, rc, NULL);
 377         RETURN(rc);
 378 }
 379
 380 int lov_update_match_set(struct lov_request_set *set, struct lov_request *req,
 381                          int rc)
 382 {
 383         int ret = rc;
 384         ENTRY;
 385
 386         if (rc > 0)
 387                 ret = 0;
 388         else if (rc == 0)
 389                 ret = 1;
 390         lov_update_set(set, req, ret);
 391         RETURN(rc);
 392 }
 393
 394 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags)
 395 {
 396         int rc = 0;
 397         ENTRY;
 398
 399         if (set == NULL)
 400                 RETURN(0);
 401         LASSERT(set->set_exp);
 402         rc = enqueue_done(set, mode);
 403         if ((set->set_count == set->set_success) &&
 404             (flags & LDLM_FL_TEST_LOCK))
 405                 lov_llh_put(set->set_lockh);
 406
 407         lov_put_reqset(set);
 408
 409         RETURN(rc);
 410 }
 411
 412 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
 413                        struct lov_stripe_md *lsm, ldlm_policy_data_t *policy,
 414                        __u32 mode, struct lustre_handle *lockh,
 415                        struct lov_request_set **reqset)
 416 {
 417         struct lov_obd *lov = &exp->exp_obd->u.lov;
 418         struct lov_request_set *set;
 419         int i, rc = 0;
 420         struct lov_oinfo *loi;
 421         ENTRY;
 422
 423         OBD_ALLOC(set, sizeof(*set));
 424         if (set == NULL)
 425                 RETURN(-ENOMEM);
 426         lov_init_set(set);
 427
 428         set->set_exp = exp;
 429         set->set_oi = oinfo;
 430         set->set_oi->oi_md = lsm;
 431         set->set_lockh = lov_llh_new(lsm);
 432         if (set->set_lockh == NULL)
 433                 GOTO(out_set, rc = -ENOMEM);
 434         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 435
 436         for (i = 0; i < lsm->lsm_stripe_count; i++){
 437                 struct lov_request *req;
 438                 obd_off start, end;
 439
 440                 loi = lsm->lsm_oinfo[i];
 441                 if (!lov_stripe_intersects(lsm, i, policy->l_extent.start,
 442                                            policy->l_extent.end, &start, &end))
 443                         continue;
 444
 445                 /* FIXME raid1 should grace this error */
 446                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 447                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 448                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 449                         GOTO(out_set, rc = -EIO);
 450                 }
 451
 452                 OBD_ALLOC(req, sizeof(*req));
 453                 if (req == NULL)
 454                         GOTO(out_set, rc = -ENOMEM);
 455
 456                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 457                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 458                 if (req->rq_oi.oi_md == NULL) {
 459                         OBD_FREE(req, sizeof(*req));
 460                         GOTO(out_set, rc = -ENOMEM);
 461                 }
 462
 463                 req->rq_oi.oi_policy.l_extent.start = start;
 464                 req->rq_oi.oi_policy.l_extent.end = end;
 465                 req->rq_oi.oi_policy.l_extent.gid = policy->l_extent.gid;
 466
 467                 req->rq_idx = loi->loi_ost_idx;
 468                 req->rq_stripe = i;
 469
 470                 /* XXX LOV STACKING: submd should be from the subobj */
 471                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 472                 req->rq_oi.oi_md->lsm_object_gr = loi->loi_gr;
 473                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 474
 475                 lov_set_add_req(req, set);
 476         }
 477         if (!set->set_count)
 478                 GOTO(out_set, rc = -EIO);
 479         *reqset = set;
 480         RETURN(rc);
 481 out_set:
 482         lov_fini_match_set(set, mode, 0);
 483         RETURN(rc);
 484 }
 485
 486 int lov_fini_cancel_set(struct lov_request_set *set)
 487 {
 488         int rc = 0;
 489         ENTRY;
 490
 491         if (set == NULL)
 492                 RETURN(0);
 493
 494         LASSERT(set->set_exp);
 495         if (set->set_lockh)
 496                 lov_llh_put(set->set_lockh);
 497
 498         lov_put_reqset(set);
 499
 500         RETURN(rc);
 501 }
 502
 503 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
 504                         struct lov_stripe_md *lsm, __u32 mode,
 505                         struct lustre_handle *lockh,
 506                         struct lov_request_set **reqset)
 507 {
 508         struct lov_request_set *set;
 509         int i, rc = 0;
 510         struct lov_oinfo *loi;
 511         ENTRY;
 512
 513         OBD_ALLOC(set, sizeof(*set));
 514         if (set == NULL)
 515                 RETURN(-ENOMEM);
 516         lov_init_set(set);
 517
 518         set->set_exp = exp;
 519         set->set_oi = oinfo;
 520         set->set_oi->oi_md = lsm;
 521         set->set_lockh = lov_handle2llh(lockh);
 522         if (set->set_lockh == NULL) {
 523                 CERROR("LOV: invalid lov lock handle %p\n", lockh);
 524                 GOTO(out_set, rc = -EINVAL);
 525         }
 526         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 527
 528         for (i = 0; i < lsm->lsm_stripe_count; i++){
 529                 struct lov_request *req;
 530                 struct lustre_handle *lov_lockhp;
 531
 532                 loi = lsm->lsm_oinfo[i];
 533                 lov_lockhp = set->set_lockh->llh_handles + i;
 534                 if (!lustre_handle_is_used(lov_lockhp)) {
 535                         CDEBUG(D_INFO, "lov idx %d subobj "LPX64" no lock\n",
 536                                loi->loi_ost_idx, loi->loi_id);
 537                         continue;
 538                 }
 539
 540                 OBD_ALLOC(req, sizeof(*req));
 541                 if (req == NULL)
 542                         GOTO(out_set, rc = -ENOMEM);
 543
 544                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 545                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 546                 if (req->rq_oi.oi_md == NULL) {
 547                         OBD_FREE(req, sizeof(*req));
 548                         GOTO(out_set, rc = -ENOMEM);
 549                 }
 550
 551                 req->rq_idx = loi->loi_ost_idx;
 552                 req->rq_stripe = i;
 553
 554                 /* XXX LOV STACKING: submd should be from the subobj */
 555                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 556                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 557
 558                 lov_set_add_req(req, set);
 559         }
 560         if (!set->set_count)
 561                 GOTO(out_set, rc = -EIO);
 562         *reqset = set;
 563         RETURN(rc);
 564 out_set:
 565         lov_fini_cancel_set(set);
 566         RETURN(rc);
 567 }
 568
 569 static int create_done(struct obd_export *exp, struct lov_request_set *set,
 570                        struct lov_stripe_md **lsmp)
 571 {
 572         struct lov_obd *lov = &exp->exp_obd->u.lov;
 573         struct obd_trans_info *oti = set->set_oti;
 574         struct obdo *src_oa = set->set_oi->oi_oa;
 575         struct lov_request *req;
 576         struct obdo *ret_oa = NULL;
 577         int attrset = 0, rc = 0;
 578         ENTRY;
 579
 580         LASSERT(set->set_completes);
 581
 582         /* try alloc objects on other osts if osc_create fails for
 583          * exceptions: RPC failure, ENOSPC, etc */
 584         if (set->set_count != set->set_success) {
 585                 list_for_each_entry (req, &set->set_list, rq_link) {
 586                         if (req->rq_rc == 0)
 587                                 continue;
 588
 589                         set->set_completes--;
 590                         req->rq_complete = 0;
 591
 592                         rc = qos_remedy_create(set, req);
 593                         lov_update_create_set(set, req, rc);
 594                 }
 595         }
 596
 597         /* no successful creates */
 598         if (set->set_success == 0)
 599                 GOTO(cleanup, rc);
 600
 601         if (set->set_count != set->set_success) {
 602                 set->set_count = set->set_success;
 603                 qos_shrink_lsm(set);
 604         }
 605
 606         OBDO_ALLOC(ret_oa);
 607         if (ret_oa == NULL)
 608                 GOTO(cleanup, rc = -ENOMEM);
 609
 610         list_for_each_entry(req, &set->set_list, rq_link) {
 611                 if (!req->rq_complete || req->rq_rc)
 612                         continue;
 613                 lov_merge_attrs(ret_oa, req->rq_oi.oi_oa,
 614                                 req->rq_oi.oi_oa->o_valid, set->set_oi->oi_md,
 615                                 req->rq_stripe, &attrset);
 616         }
 617         if (src_oa->o_valid & OBD_MD_FLSIZE &&
 618             ret_oa->o_size != src_oa->o_size) {
 619                 CERROR("original size "LPU64" isn't new object size "LPU64"\n",
 620                        src_oa->o_size, ret_oa->o_size);
 621                 LBUG();
 622         }
 623         ret_oa->o_id = src_oa->o_id;
 624         memcpy(src_oa, ret_oa, sizeof(*src_oa));
 625         OBDO_FREE(ret_oa);
 626
 627         *lsmp = set->set_oi->oi_md;
 628         GOTO(done, rc = 0);
 629
 630 cleanup:
 631         list_for_each_entry(req, &set->set_list, rq_link) {
 632                 struct obd_export *sub_exp;
 633                 int err = 0;
 634
 635                 if (!req->rq_complete || req->rq_rc)
 636                         continue;
 637
 638                 sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp;
 639                 err = obd_destroy(sub_exp, req->rq_oi.oi_oa, NULL, oti, NULL);
 640                 if (err)
 641                         CERROR("Failed to uncreate objid "LPX64" subobj "
 642                                LPX64" on OST idx %d: rc = %d\n",
 643                                src_oa->o_id, req->rq_oi.oi_oa->o_id,
 644                                req->rq_idx, rc);
 645         }
 646         if (*lsmp == NULL)
 647                 obd_free_memmd(exp, &set->set_oi->oi_md);
 648 done:
 649         if (oti && set->set_cookies) {
 650                 oti->oti_logcookies = set->set_cookies;
 651                 if (!set->set_cookie_sent) {
 652                         oti_free_cookies(oti);
 653                         src_oa->o_valid &= ~OBD_MD_FLCOOKIE;
 654                 } else {
 655                         src_oa->o_valid |= OBD_MD_FLCOOKIE;
 656                 }
 657         }
 658         RETURN(rc);
 659 }
 660
 661 int lov_fini_create_set(struct lov_request_set *set,struct lov_stripe_md **lsmp)
 662 {
 663         int rc = 0;
 664         ENTRY;
 665
 666         if (set == NULL)
 667                 RETURN(0);
 668         LASSERT(set->set_exp);
 669         if (set->set_completes)
 670                 rc = create_done(set->set_exp, set, lsmp);
 671
 672         lov_put_reqset(set);
 673         RETURN(rc);
 674 }
 675
 676 int lov_update_create_set(struct lov_request_set *set,
 677                           struct lov_request *req, int rc)
 678 {
 679         struct obd_trans_info *oti = set->set_oti;
 680         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 681         struct lov_oinfo *loi;
 682         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 683         ENTRY;
 684
 685         if (rc && lov->lov_tgts[req->rq_idx] &&
 686             lov->lov_tgts[req->rq_idx]->ltd_active) {
 687                 CERROR("error creating fid "LPX64" sub-object"
 688                        " on OST idx %d/%d: rc = %d\n",
 689                        set->set_oi->oi_oa->o_id, req->rq_idx,
 690                        lsm->lsm_stripe_count, rc);
 691                 if (rc > 0) {
 692                         CERROR("obd_create returned invalid err %d\n", rc);
 693                         rc = -EIO;
 694                 }
 695         }
 696
 697         spin_lock(&set->set_lock);
 698         req->rq_stripe = set->set_success;
 699         loi = lsm->lsm_oinfo[req->rq_stripe];
 700         if (rc) {
 701                 lov_update_set(set, req, rc);
 702                 spin_unlock(&set->set_lock);
 703                 RETURN(rc);
 704         }
 705
 706         loi->loi_id = req->rq_oi.oi_oa->o_id;
 707         loi->loi_ost_idx = req->rq_idx;
 708         loi_init(loi);
 709
 710         if (oti && set->set_cookies)
 711                 ++oti->oti_logcookies;
 712         if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCOOKIE)
 713                 set->set_cookie_sent++;
 714
 715         lov_update_set(set, req, rc);
 716         spin_unlock(&set->set_lock);
 717
 718         CDEBUG(D_INODE, "objid "LPX64" has subobj "LPX64"/"LPU64" at idx %d\n",
 719                lsm->lsm_object_id, loi->loi_id, loi->loi_id, req->rq_idx);
 720
 721         RETURN(0);
 722 }
 723
 724 int cb_create_update(struct obd_info *oinfo, int rc)
 725 {
 726         struct lov_request *lovreq;
 727
 728         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 729         rc= lov_update_create_set(lovreq->rq_rqset, lovreq, rc);
 730         if (lov_finished_set(lovreq->rq_rqset))
 731                 lov_put_reqset(lovreq->rq_rqset);
 732         return rc;
 733 }
 734
 735
 736 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oinfo,
 737                         struct lov_stripe_md **lsmp, struct obdo *src_oa,
 738                         struct obd_trans_info *oti,
 739                         struct lov_request_set **reqset)
 740 {
 741         struct lov_request_set *set;
 742         int rc = 0;
 743         ENTRY;
 744
 745         OBD_ALLOC(set, sizeof(*set));
 746         if (set == NULL)
 747                 RETURN(-ENOMEM);
 748         lov_init_set(set);
 749
 750         set->set_exp = exp;
 751         set->set_oi = oinfo;
 752         set->set_oi->oi_md = *lsmp;
 753         set->set_oi->oi_oa = src_oa;
 754         set->set_oti = oti;
 755         lov_get_reqset(set);
 756
 757         rc = qos_prep_create(exp, set);
 758         /* qos_shrink_lsm() may have allocated a new lsm */
 759         *lsmp = oinfo->oi_md;
 760         if (rc) {
 761                 lov_fini_create_set(set, lsmp);
 762                 lov_put_reqset(set);
 763         } else {
 764                 *reqset = set;
 765         }
 766         RETURN(rc);
 767 }
 768
 769 static int common_attr_done(struct lov_request_set *set)
 770 {
 771         struct list_head *pos;
 772         struct lov_request *req;
 773         struct obdo *tmp_oa;
 774         int rc = 0, attrset = 0;
 775         ENTRY;
 776
 777         LASSERT(set->set_oi != NULL);
 778
 779         if (set->set_oi->oi_oa == NULL)
 780                 RETURN(0);
 781
 782         if (!set->set_success)
 783                 RETURN(-EIO);
 784
 785         OBDO_ALLOC(tmp_oa);
 786         if (tmp_oa == NULL)
 787                 GOTO(out, rc = -ENOMEM);
 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                 if (req->rq_oi.oi_oa->o_valid == 0)   /* inactive stripe */
 795                         continue;
 796                 lov_merge_attrs(tmp_oa, req->rq_oi.oi_oa,
 797                                 req->rq_oi.oi_oa->o_valid,
 798                                 set->set_oi->oi_md, req->rq_stripe, &attrset);
 799         }
 800         if (!attrset) {
 801                 CERROR("No stripes had valid attrs\n");
 802                 rc = -EIO;
 803         }
 804         tmp_oa->o_id = set->set_oi->oi_oa->o_id;
 805         memcpy(set->set_oi->oi_oa, tmp_oa, sizeof(*set->set_oi->oi_oa));
 806 out:
 807         if (tmp_oa)
 808                 OBDO_FREE(tmp_oa);
 809         RETURN(rc);
 810
 811 }
 812
 813 static int brw_done(struct lov_request_set *set)
 814 {
 815         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 816         struct lov_oinfo     *loi = NULL;
 817         struct list_head *pos;
 818         struct lov_request *req;
 819         ENTRY;
 820
 821         list_for_each (pos, &set->set_list) {
 822                 req = list_entry(pos, struct lov_request, rq_link);
 823
 824                 if (!req->rq_complete || req->rq_rc)
 825                         continue;
 826
 827                 loi = lsm->lsm_oinfo[req->rq_stripe];
 828
 829                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS)
 830                         loi->loi_lvb.lvb_blocks = req->rq_oi.oi_oa->o_blocks;
 831         }
 832
 833         RETURN(0);
 834 }
 835
 836 int lov_fini_brw_set(struct lov_request_set *set)
 837 {
 838         int rc = 0;
 839         ENTRY;
 840
 841         if (set == NULL)
 842                 RETURN(0);
 843         LASSERT(set->set_exp);
 844         if (set->set_completes) {
 845                 rc = brw_done(set);
 846                 /* FIXME update qos data here */
 847         }
 848         lov_put_reqset(set);
 849
 850         RETURN(rc);
 851 }
 852
 853 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
 854                      obd_count oa_bufs, struct brw_page *pga,
 855                      struct obd_trans_info *oti,
 856                      struct lov_request_set **reqset)
 857 {
 858         struct {
 859                 obd_count       index;
 860                 obd_count       count;
 861                 obd_count       off;
 862         } *info = NULL;
 863         struct lov_request_set *set;
 864         struct lov_oinfo *loi = NULL;
 865         struct lov_obd *lov = &exp->exp_obd->u.lov;
 866         int rc = 0, i, shift;
 867         ENTRY;
 868
 869         OBD_ALLOC(set, sizeof(*set));
 870         if (set == NULL)
 871                 RETURN(-ENOMEM);
 872         lov_init_set(set);
 873
 874         set->set_exp = exp;
 875         set->set_oti = oti;
 876         set->set_oi = oinfo;
 877         set->set_oabufs = oa_bufs;
 878         OBD_ALLOC(set->set_pga, oa_bufs * sizeof(*set->set_pga));
 879         if (!set->set_pga)
 880                 GOTO(out, rc = -ENOMEM);
 881
 882         OBD_ALLOC(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 883         if (!info)
 884                 GOTO(out, rc = -ENOMEM);
 885
 886         /* calculate the page count for each stripe */
 887         for (i = 0; i < oa_bufs; i++) {
 888                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 889                 info[stripe].count++;
 890         }
 891
 892         /* alloc and initialize lov request */
 893         shift = 0;
 894         for (i = 0 ; i < oinfo->oi_md->lsm_stripe_count; i++){
 895                 struct lov_request *req;
 896
 897                 if (info[i].count == 0)
 898                         continue;
 899
 900                 loi = oinfo->oi_md->lsm_oinfo[i];
 901                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 902                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 903                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 904                         GOTO(out, rc = -EIO);
 905                 }
 906
 907                 OBD_ALLOC(req, sizeof(*req));
 908                 if (req == NULL)
 909                         GOTO(out, rc = -ENOMEM);
 910
 911                 OBDO_ALLOC(req->rq_oi.oi_oa);
 912                 if (req->rq_oi.oi_oa == NULL) {
 913                         OBD_FREE(req, sizeof(*req));
 914                         GOTO(out, rc = -ENOMEM);
 915                 }
 916
 917                 if (oinfo->oi_oa) {
 918                         memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
 919                                sizeof(*req->rq_oi.oi_oa));
 920                 }
 921                 req->rq_oi.oi_oa->o_id = loi->loi_id;
 922                 req->rq_oi.oi_oa->o_stripe_idx = i;
 923
 924                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 925                 OBD_ALLOC(req->rq_oi.oi_md, req->rq_buflen);
 926                 if (req->rq_oi.oi_md == NULL) {
 927                         OBDO_FREE(req->rq_oi.oi_oa);
 928                         OBD_FREE(req, sizeof(*req));
 929                         GOTO(out, rc = -ENOMEM);
 930                 }
 931
 932                 req->rq_idx = loi->loi_ost_idx;
 933                 req->rq_stripe = i;
 934
 935                 /* XXX LOV STACKING */
 936                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 937                 req->rq_oi.oi_md->lsm_object_gr = oinfo->oi_md->lsm_object_gr;
 938                 req->rq_oabufs = info[i].count;
 939                 req->rq_pgaidx = shift;
 940                 shift += req->rq_oabufs;
 941
 942                 /* remember the index for sort brw_page array */
 943                 info[i].index = req->rq_pgaidx;
 944
 945                 lov_set_add_req(req, set);
 946         }
 947         if (!set->set_count)
 948                 GOTO(out, rc = -EIO);
 949
 950         /* rotate & sort the brw_page array */
 951         for (i = 0; i < oa_bufs; i++) {
 952                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 953
 954                 shift = info[stripe].index + info[stripe].off;
 955                 LASSERT(shift < oa_bufs);
 956                 set->set_pga[shift] = pga[i];
 957                 lov_stripe_offset(oinfo->oi_md, pga[i].off, stripe,
 958                                   &set->set_pga[shift].off);
 959                 info[stripe].off++;
 960         }
 961 out:
 962         if (info)
 963                 OBD_FREE(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 964
 965         if (rc == 0)
 966                 *reqset = set;
 967         else
 968                 lov_fini_brw_set(set);
 969
 970         RETURN(rc);
 971 }
 972
 973 int lov_fini_getattr_set(struct lov_request_set *set)
 974 {
 975         int rc = 0;
 976         ENTRY;
 977
 978         if (set == NULL)
 979                 RETURN(0);
 980         LASSERT(set->set_exp);
 981         if (set->set_completes)
 982                 rc = common_attr_done(set);
 983
 984         lov_put_reqset(set);
 985
 986         RETURN(rc);
 987 }
 988
 989 /* The callback for osc_getattr_async that finilizes a request info when a
 990  * response is recieved. */
 991 static int cb_getattr_update(struct obd_info *oinfo, int rc)
 992 {
 993         struct lov_request *lovreq;
 994         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 995         return lov_update_common_set(lovreq->rq_rqset, lovreq, rc);
 996 }
 997
 998 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
 999                          struct lov_request_set **reqset)
1000 {
1001         struct lov_request_set *set;
1002         struct lov_oinfo *loi = NULL;
1003         struct lov_obd *lov = &exp->exp_obd->u.lov;
1004         int rc = 0, i;
1005         ENTRY;
1006
1007         OBD_ALLOC(set, sizeof(*set));
1008         if (set == NULL)
1009                 RETURN(-ENOMEM);
1010         lov_init_set(set);
1011
1012         set->set_exp = exp;
1013         set->set_oi = oinfo;
1014
1015         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1016                 struct lov_request *req;
1017
1018                 loi = oinfo->oi_md->lsm_oinfo[i];
1019                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1020                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1021                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1022                         continue;
1023                 }
1024
1025                 OBD_ALLOC(req, sizeof(*req));
1026                 if (req == NULL)
1027                         GOTO(out_set, rc = -ENOMEM);
1028
1029                 req->rq_stripe = i;
1030                 req->rq_idx = loi->loi_ost_idx;
1031
1032                 OBDO_ALLOC(req->rq_oi.oi_oa);
1033                 if (req->rq_oi.oi_oa == NULL) {
1034                         OBD_FREE(req, sizeof(*req));
1035                         GOTO(out_set, rc = -ENOMEM);
1036                 }
1037                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1038                        sizeof(*req->rq_oi.oi_oa));
1039                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1040                 req->rq_oi.oi_cb_up = cb_getattr_update;
1041
1042                 lov_set_add_req(req, set);
1043         }
1044         if (!set->set_count)
1045                 GOTO(out_set, rc = -EIO);
1046         *reqset = set;
1047         RETURN(rc);
1048 out_set:
1049         lov_fini_getattr_set(set);
1050         RETURN(rc);
1051 }
1052
1053 int lov_fini_destroy_set(struct lov_request_set *set)
1054 {
1055         ENTRY;
1056
1057         if (set == NULL)
1058                 RETURN(0);
1059         LASSERT(set->set_exp);
1060         if (set->set_completes) {
1061                 /* FIXME update qos data here */
1062         }
1063
1064         lov_put_reqset(set);
1065
1066         RETURN(0);
1067 }
1068
1069 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
1070                          struct obdo *src_oa, struct lov_stripe_md *lsm,
1071                          struct obd_trans_info *oti,
1072                          struct lov_request_set **reqset)
1073 {
1074         struct lov_request_set *set;
1075         struct lov_oinfo *loi = NULL;
1076         struct lov_obd *lov = &exp->exp_obd->u.lov;
1077         int rc = 0, i;
1078         ENTRY;
1079
1080         OBD_ALLOC(set, sizeof(*set));
1081         if (set == NULL)
1082                 RETURN(-ENOMEM);
1083         lov_init_set(set);
1084
1085         set->set_exp = exp;
1086         set->set_oi = oinfo;
1087         set->set_oi->oi_md = lsm;
1088         set->set_oi->oi_oa = src_oa;
1089         set->set_oti = oti;
1090         if (oti != NULL && src_oa->o_valid & OBD_MD_FLCOOKIE)
1091                 set->set_cookies = oti->oti_logcookies;
1092
1093         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1094                 struct lov_request *req;
1095
1096                 loi = lsm->lsm_oinfo[i];
1097                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1098                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1099                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1100                         continue;
1101                 }
1102
1103                 OBD_ALLOC(req, sizeof(*req));
1104                 if (req == NULL)
1105                         GOTO(out_set, rc = -ENOMEM);
1106
1107                 req->rq_stripe = i;
1108                 req->rq_idx = loi->loi_ost_idx;
1109
1110                 OBDO_ALLOC(req->rq_oi.oi_oa);
1111                 if (req->rq_oi.oi_oa == NULL) {
1112                         OBD_FREE(req, sizeof(*req));
1113                         GOTO(out_set, rc = -ENOMEM);
1114                 }
1115                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1116                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1117                 lov_set_add_req(req, set);
1118         }
1119         if (!set->set_count)
1120                 GOTO(out_set, rc = -EIO);
1121         *reqset = set;
1122         RETURN(rc);
1123 out_set:
1124         lov_fini_destroy_set(set);
1125         RETURN(rc);
1126 }
1127
1128 int lov_fini_setattr_set(struct lov_request_set *set)
1129 {
1130         int rc = 0;
1131         ENTRY;
1132
1133         if (set == NULL)
1134                 RETURN(0);
1135         LASSERT(set->set_exp);
1136         if (set->set_completes) {
1137                 rc = common_attr_done(set);
1138                 /* FIXME update qos data here */
1139         }
1140
1141         lov_put_reqset(set);
1142         RETURN(rc);
1143 }
1144
1145 int lov_update_setattr_set(struct lov_request_set *set,
1146                            struct lov_request *req, int rc)
1147 {
1148         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1149         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1150         ENTRY;
1151
1152         lov_update_set(set, req, rc);
1153
1154         /* grace error on inactive ost */
1155         if (rc && !(lov->lov_tgts[req->rq_idx] &&
1156                     lov->lov_tgts[req->rq_idx]->ltd_active))
1157                 rc = 0;
1158
1159         if (rc == 0) {
1160                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCTIME)
1161                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_ctime =
1162                                 req->rq_oi.oi_oa->o_ctime;
1163                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLMTIME)
1164                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_mtime =
1165                                 req->rq_oi.oi_oa->o_mtime;
1166                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLATIME)
1167                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_atime =
1168                                 req->rq_oi.oi_oa->o_atime;
1169         }
1170
1171         RETURN(rc);
1172 }
1173
1174 /* The callback for osc_setattr_async that finilizes a request info when a
1175  * response is recieved. */
1176 static int cb_setattr_update(struct obd_info *oinfo, int rc)
1177 {
1178         struct lov_request *lovreq;
1179         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1180         return lov_update_setattr_set(lovreq->rq_rqset, lovreq, rc);
1181 }
1182
1183 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
1184                          struct obd_trans_info *oti,
1185                          struct lov_request_set **reqset)
1186 {
1187         struct lov_request_set *set;
1188         struct lov_oinfo *loi = NULL;
1189         struct lov_obd *lov = &exp->exp_obd->u.lov;
1190         int rc = 0, i;
1191         ENTRY;
1192
1193         OBD_ALLOC(set, sizeof(*set));
1194         if (set == NULL)
1195                 RETURN(-ENOMEM);
1196         lov_init_set(set);
1197
1198         set->set_exp = exp;
1199         set->set_oti = oti;
1200         set->set_oi = oinfo;
1201         if (oti != NULL && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
1202                 set->set_cookies = oti->oti_logcookies;
1203
1204         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1205                 struct lov_request *req;
1206
1207                 loi = oinfo->oi_md->lsm_oinfo[i];
1208                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1209                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1210                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1211                         continue;
1212                 }
1213
1214                 OBD_ALLOC(req, sizeof(*req));
1215                 if (req == NULL)
1216                         GOTO(out_set, rc = -ENOMEM);
1217                 req->rq_stripe = i;
1218                 req->rq_idx = loi->loi_ost_idx;
1219
1220                 OBDO_ALLOC(req->rq_oi.oi_oa);
1221                 if (req->rq_oi.oi_oa == NULL) {
1222                         OBD_FREE(req, sizeof(*req));
1223                         GOTO(out_set, rc = -ENOMEM);
1224                 }
1225                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1226                        sizeof(*req->rq_oi.oi_oa));
1227                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1228                 req->rq_oi.oi_oa->o_stripe_idx = i;
1229                 req->rq_oi.oi_cb_up = cb_setattr_update;
1230
1231                 if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE) {
1232                         int off = lov_stripe_offset(oinfo->oi_md,
1233                                                     oinfo->oi_oa->o_size, i,
1234                                                     &req->rq_oi.oi_oa->o_size);
1235
1236                         if (off < 0 && req->rq_oi.oi_oa->o_size)
1237                                 req->rq_oi.oi_oa->o_size--;
1238
1239                         CDEBUG(D_INODE, "stripe %d has size "LPU64"/"LPU64"\n",
1240                                i, req->rq_oi.oi_oa->o_size,
1241                                oinfo->oi_oa->o_size);
1242                 }
1243                 lov_set_add_req(req, set);
1244         }
1245         if (!set->set_count)
1246                 GOTO(out_set, rc = -EIO);
1247         *reqset = set;
1248         RETURN(rc);
1249 out_set:
1250         lov_fini_setattr_set(set);
1251         RETURN(rc);
1252 }
1253
1254 int lov_fini_punch_set(struct lov_request_set *set)
1255 {
1256         int rc = 0;
1257         ENTRY;
1258
1259         if (set == NULL)
1260                 RETURN(0);
1261         LASSERT(set->set_exp);
1262         if (set->set_completes) {
1263                 rc = -EIO;
1264                 /* FIXME update qos data here */
1265                 if (set->set_success)
1266                         rc = common_attr_done(set);
1267         }
1268
1269         lov_put_reqset(set);
1270
1271         RETURN(rc);
1272 }
1273
1274 int lov_update_punch_set(struct lov_request_set *set,
1275                            struct lov_request *req, int rc)
1276 {
1277         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1278         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1279         ENTRY;
1280
1281         lov_update_set(set, req, rc);
1282
1283         /* grace error on inactive ost */
1284         if (rc && !lov->lov_tgts[req->rq_idx]->ltd_active)
1285                 rc = 0;
1286
1287         if (rc == 0) {
1288                 lov_stripe_lock(lsm);
1289                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS) {
1290                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_blocks =
1291                                 req->rq_oi.oi_oa->o_blocks;
1292                 }
1293
1294                 /* Do we need to update lvb_size here? It needn't because
1295                  * it have been done in ll_truncate(). -jay */
1296                 lov_stripe_unlock(lsm);
1297         }
1298
1299         RETURN(rc);
1300 }
1301
1302 /* The callback for osc_punch that finilizes a request info when a response
1303  * is recieved. */
1304 static int cb_update_punch(struct obd_info *oinfo, int rc)
1305 {
1306         struct lov_request *lovreq;
1307         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1308         return lov_update_punch_set(lovreq->rq_rqset, lovreq, rc);
1309 }
1310
1311 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
1312                        struct obd_trans_info *oti,
1313                        struct lov_request_set **reqset)
1314 {
1315         struct lov_request_set *set;
1316         struct lov_oinfo *loi = NULL;
1317         struct lov_obd *lov = &exp->exp_obd->u.lov;
1318         int rc = 0, i;
1319         ENTRY;
1320
1321         OBD_ALLOC(set, sizeof(*set));
1322         if (set == NULL)
1323                 RETURN(-ENOMEM);
1324         lov_init_set(set);
1325
1326         set->set_oi = oinfo;
1327         set->set_exp = exp;
1328
1329         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1330                 struct lov_request *req;
1331                 obd_off rs, re;
1332
1333                 if (!lov_stripe_intersects(oinfo->oi_md, i,
1334                                            oinfo->oi_policy.l_extent.start,
1335                                            oinfo->oi_policy.l_extent.end,
1336                                            &rs, &re))
1337                         continue;
1338
1339                 loi = oinfo->oi_md->lsm_oinfo[i];
1340                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1341                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1342                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1343                         GOTO(out_set, rc = -EIO);
1344                 }
1345
1346                 OBD_ALLOC(req, sizeof(*req));
1347                 if (req == NULL)
1348                         GOTO(out_set, rc = -ENOMEM);
1349                 req->rq_stripe = i;
1350                 req->rq_idx = loi->loi_ost_idx;
1351
1352                 OBDO_ALLOC(req->rq_oi.oi_oa);
1353                 if (req->rq_oi.oi_oa == NULL) {
1354                         OBD_FREE(req, sizeof(*req));
1355                         GOTO(out_set, rc = -ENOMEM);
1356                 }
1357                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1358                        sizeof(*req->rq_oi.oi_oa));
1359                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1360                 req->rq_oi.oi_oa->o_stripe_idx = i;
1361                 req->rq_oi.oi_cb_up = cb_update_punch;
1362
1363                 req->rq_oi.oi_policy.l_extent.start = rs;
1364                 req->rq_oi.oi_policy.l_extent.end = re;
1365                 req->rq_oi.oi_policy.l_extent.gid = -1;
1366
1367                 lov_set_add_req(req, set);
1368         }
1369         if (!set->set_count)
1370                 GOTO(out_set, rc = -EIO);
1371         *reqset = set;
1372         RETURN(rc);
1373 out_set:
1374         lov_fini_punch_set(set);
1375         RETURN(rc);
1376 }
1377
1378 int lov_fini_sync_set(struct lov_request_set *set)
1379 {
1380         int rc = 0;
1381         ENTRY;
1382
1383         if (set == NULL)
1384                 RETURN(0);
1385         LASSERT(set->set_exp);
1386         if (set->set_completes) {
1387                 if (!set->set_success)
1388                         rc = -EIO;
1389                 /* FIXME update qos data here */
1390         }
1391
1392         lov_put_reqset(set);
1393
1394         RETURN(rc);
1395 }
1396
1397 /* The callback for osc_sync that finilizes a request info when a
1398  * response is recieved. */
1399 static int cb_sync_update(struct obd_info *oinfo, int rc)
1400 {
1401         struct lov_request *lovreq;
1402         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1403         return lov_update_common_set(lovreq->rq_rqset, lovreq, rc);
1404 }
1405
1406 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *oinfo,
1407                       obd_off start, obd_off end,
1408                       struct lov_request_set **reqset)
1409 {
1410         struct lov_request_set *set;
1411         struct lov_oinfo *loi = NULL;
1412         struct lov_obd *lov = &exp->exp_obd->u.lov;
1413         int rc = 0, i;
1414         ENTRY;
1415
1416         OBD_ALLOC(set, sizeof(*set));
1417         if (set == NULL)
1418                 RETURN(-ENOMEM);
1419         lov_init_set(set);
1420
1421         set->set_exp = exp;
1422         set->set_oi = oinfo;
1423         set->set_oi->oi_md = oinfo->oi_md;
1424         set->set_oi->oi_oa = oinfo->oi_oa;
1425
1426         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1427                 struct lov_request *req;
1428                 obd_off rs, re;
1429
1430                 loi = oinfo->oi_md->lsm_oinfo[i];
1431                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1432                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1433                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1434                         continue;
1435                 }
1436
1437                 if (!lov_stripe_intersects(oinfo->oi_md, i, start,
1438                                            end, &rs, &re))
1439                         continue;
1440
1441                 OBD_ALLOC(req, sizeof(*req));
1442                 if (req == NULL)
1443                         GOTO(out_set, rc = -ENOMEM);
1444                 req->rq_stripe = i;
1445                 req->rq_idx = loi->loi_ost_idx;
1446
1447                 OBDO_ALLOC(req->rq_oi.oi_oa);
1448                 if (req->rq_oi.oi_oa == NULL) {
1449                         OBD_FREE(req, sizeof(*req));
1450                         GOTO(out_set, rc = -ENOMEM);
1451                 }
1452                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1453                        sizeof(*req->rq_oi.oi_oa));
1454                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1455                 req->rq_oi.oi_oa->o_stripe_idx = i;
1456
1457                 req->rq_oi.oi_policy.l_extent.start = rs;
1458                 req->rq_oi.oi_policy.l_extent.end = re;
1459                 req->rq_oi.oi_policy.l_extent.gid = -1;
1460                 req->rq_oi.oi_cb_up = cb_sync_update;
1461
1462                 lov_set_add_req(req, set);
1463         }
1464         if (!set->set_count)
1465                 GOTO(out_set, rc = -EIO);
1466         *reqset = set;
1467         RETURN(rc);
1468 out_set:
1469         lov_fini_sync_set(set);
1470         RETURN(rc);
1471 }
1472
1473 #define LOV_U64_MAX ((__u64)~0ULL)
1474 #define LOV_SUM_MAX(tot, add)                                           \
1475         do {                                                            \
1476                 if ((tot) + (add) < (tot))                              \
1477                         (tot) = LOV_U64_MAX;                            \
1478                 else                                                    \
1479                         (tot) += (add);                                 \
1480         } while(0)
1481
1482 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,int success)
1483 {
1484         ENTRY;
1485
1486         if (success) {
1487                 __u32 expected_stripes = lov_get_stripecnt(&obd->u.lov, 0);
1488
1489                 if (osfs->os_files != LOV_U64_MAX)
1490                         do_div(osfs->os_files, expected_stripes);
1491                 if (osfs->os_ffree != LOV_U64_MAX)
1492                         do_div(osfs->os_ffree, expected_stripes);
1493
1494                 spin_lock(&obd->obd_osfs_lock);
1495                 memcpy(&obd->obd_osfs, osfs, sizeof(*osfs));
1496                 obd->obd_osfs_age = cfs_time_current_64();
1497                 spin_unlock(&obd->obd_osfs_lock);
1498                 RETURN(0);
1499         }
1500
1501         RETURN(-EIO);
1502 }
1503
1504 int lov_fini_statfs_set(struct lov_request_set *set)
1505 {
1506         int rc = 0;
1507         ENTRY;
1508
1509         if (set == NULL)
1510                 RETURN(0);
1511
1512         if (set->set_completes) {
1513                 rc = lov_fini_statfs(set->set_obd, set->set_oi->oi_osfs,
1514                                      set->set_success);
1515         }
1516         lov_put_reqset(set);
1517         RETURN(rc);
1518 }
1519
1520 void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
1521                        int success)
1522 {
1523         int shift = 0, quit = 0;
1524         __u64 tmp;
1525
1526         if (success == 0) {
1527                 memcpy(osfs, lov_sfs, sizeof(*lov_sfs));
1528         } else {
1529                 if (osfs->os_bsize != lov_sfs->os_bsize) {
1530                         /* assume all block sizes are always powers of 2 */
1531                         /* get the bits difference */
1532                         tmp = osfs->os_bsize | lov_sfs->os_bsize;
1533                         for (shift = 0; shift <= 64; ++shift) {
1534                                 if (tmp & 1) {
1535                                         if (quit)
1536                                                 break;
1537                                         else
1538                                                 quit = 1;
1539                                         shift = 0;
1540                                 }
1541                                 tmp >>= 1;
1542                         }
1543                 }
1544
1545                 if (osfs->os_bsize < lov_sfs->os_bsize) {
1546                         osfs->os_bsize = lov_sfs->os_bsize;
1547
1548                         osfs->os_bfree  >>= shift;
1549                         osfs->os_bavail >>= shift;
1550                         osfs->os_blocks >>= shift;
1551                 } else if (shift != 0) {
1552                         lov_sfs->os_bfree  >>= shift;
1553                         lov_sfs->os_bavail >>= shift;
1554                         lov_sfs->os_blocks >>= shift;
1555                 }
1556 #ifdef MIN_DF
1557                 /* Sandia requested that df (and so, statfs) only
1558                    returned minimal available space on
1559                    a single OST, so people would be able to
1560                    write this much data guaranteed. */
1561                 if (osfs->os_bavail > lov_sfs->os_bavail) {
1562                         /* Presumably if new bavail is smaller,
1563                            new bfree is bigger as well */
1564                         osfs->os_bfree = lov_sfs->os_bfree;
1565                         osfs->os_bavail = lov_sfs->os_bavail;
1566                 }
1567 #else
1568                 osfs->os_bfree += lov_sfs->os_bfree;
1569                 osfs->os_bavail += lov_sfs->os_bavail;
1570 #endif
1571                 osfs->os_blocks += lov_sfs->os_blocks;
1572                 /* XXX not sure about this one - depends on policy.
1573                  *   - could be minimum if we always stripe on all OBDs
1574                  *     (but that would be wrong for any other policy,
1575                  *     if one of the OBDs has no more objects left)
1576                  *   - could be sum if we stripe whole objects
1577                  *   - could be average, just to give a nice number
1578                  *
1579                  * To give a "reasonable" (if not wholly accurate)
1580                  * number, we divide the total number of free objects
1581                  * by expected stripe count (watch out for overflow).
1582                  */
1583                 LOV_SUM_MAX(osfs->os_files, lov_sfs->os_files);
1584                 LOV_SUM_MAX(osfs->os_ffree, lov_sfs->os_ffree);
1585         }
1586 }
1587
1588 /* The callback for osc_statfs_async that finilizes a request info when a
1589  * response is received. */
1590 static int cb_statfs_update(struct obd_info *oinfo, int rc)
1591 {
1592         struct lov_request *lovreq;
1593         struct obd_statfs *osfs, *lov_sfs;
1594         struct obd_device *obd;
1595         struct lov_obd *lov;
1596         int success;
1597         ENTRY;
1598
1599         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1600         lov = &lovreq->rq_rqset->set_obd->u.lov;
1601         obd = class_exp2obd(lov->lov_tgts[lovreq->rq_idx]->ltd_exp);
1602
1603         osfs = lovreq->rq_rqset->set_oi->oi_osfs;
1604         lov_sfs = oinfo->oi_osfs;
1605
1606         success = lovreq->rq_rqset->set_success;
1607         /* XXX: the same is done in lov_update_common_set, however
1608            lovset->set_exp is not initialized. */
1609         lov_update_set(lovreq->rq_rqset, lovreq, rc);
1610         if (rc) {
1611                 /* XXX ignore error for disconnected ost ? */
1612                 if (rc && !(lov->lov_tgts[lovreq->rq_idx] &&
1613                             lov->lov_tgts[lovreq->rq_idx]->ltd_active))
1614                         rc = 0;
1615                 GOTO(out, rc);
1616         }
1617
1618         spin_lock(&obd->obd_osfs_lock);
1619         memcpy(&obd->obd_osfs, lov_sfs, sizeof(*lov_sfs));
1620         if ((oinfo->oi_flags & OBD_STATFS_FROM_CACHE) == 0)
1621                 obd->obd_osfs_age = cfs_time_current_64();
1622         spin_unlock(&obd->obd_osfs_lock);
1623
1624         lov_update_statfs(osfs, lov_sfs, success);
1625         qos_update(lov);
1626 out:
1627         if (lovreq->rq_rqset->set_oi->oi_flags & OBD_STATFS_PTLRPCD &&
1628             lov_finished_set(lovreq->rq_rqset)) {
1629                lov_statfs_interpret(NULL, lovreq->rq_rqset,
1630                                     lovreq->rq_rqset->set_success !=
1631                                                   lovreq->rq_rqset->set_count);
1632                qos_statfs_done(lov);
1633         }
1634
1635         RETURN(0);
1636 }
1637
1638 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
1639                         struct lov_request_set **reqset)
1640 {
1641         struct lov_request_set *set;
1642         struct lov_obd *lov = &obd->u.lov;
1643         int rc = 0, i;
1644         ENTRY;
1645
1646         OBD_ALLOC(set, sizeof(*set));
1647         if (set == NULL)
1648                 RETURN(-ENOMEM);
1649         lov_init_set(set);
1650
1651         set->set_obd = obd;
1652         set->set_oi = oinfo;
1653
1654         /* We only get block data from the OBD */
1655         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
1656                 struct lov_request *req;
1657
1658                 if (!lov->lov_tgts[i] || (!lov->lov_tgts[i]->ltd_active
1659                                           && (oinfo->oi_flags & OBD_STATFS_NODELAY))) {
1660                         CDEBUG(D_HA, "lov idx %d inactive\n", i);
1661                         continue;
1662                 }
1663
1664                 /* skip targets that have been explicitely disabled by the
1665                  * administrator */
1666                 if (!lov->lov_tgts[i]->ltd_exp) {
1667                         CDEBUG(D_HA, "lov idx %d administratively disabled\n", i);
1668                         continue;
1669                 }
1670
1671                 OBD_ALLOC(req, sizeof(*req));
1672                 if (req == NULL)
1673                         GOTO(out_set, rc = -ENOMEM);
1674
1675                 OBD_ALLOC(req->rq_oi.oi_osfs, sizeof(*req->rq_oi.oi_osfs));
1676                 if (req->rq_oi.oi_osfs == NULL) {
1677                         OBD_FREE(req, sizeof(*req));
1678                         GOTO(out_set, rc = -ENOMEM);
1679                 }
1680
1681                 req->rq_idx = i;
1682                 req->rq_oi.oi_cb_up = cb_statfs_update;
1683                 req->rq_oi.oi_flags = oinfo->oi_flags;
1684
1685                 lov_set_add_req(req, set);
1686         }
1687         if (!set->set_count)
1688                 GOTO(out_set, rc = -EIO);
1689         *reqset = set;
1690         RETURN(rc);
1691 out_set:
1692         lov_fini_statfs_set(set);
1693         RETURN(rc);
1694 }