lustre/lov/lov_request.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  *
  32  * Copyright (c) 2011 Whamcloud, Inc.
  33  *
  34  */
  35 /*
  36  * This file is part of Lustre, http://www.lustre.org/
  37  * Lustre is a trademark of Sun Microsystems, Inc.
  38  */
  39
  40 #ifndef EXPORT_SYMTAB
  41 # define EXPORT_SYMTAB
  42 #endif
  43 #define DEBUG_SUBSYSTEM S_LOV
  44
  45 #ifdef __KERNEL__
  46 #include <libcfs/libcfs.h>
  47 #else
  48 #include <liblustre.h>
  49 #endif
  50
  51 #include <obd_class.h>
  52 #include <obd_lov.h>
  53 #include <lustre/lustre_idl.h>
  54
  55 #include "lov_internal.h"
  56
  57 static void lov_init_set(struct lov_request_set *set)
  58 {
  59         set->set_count = 0;
  60         cfs_atomic_set(&set->set_completes, 0);
  61         cfs_atomic_set(&set->set_success, 0);
  62         set->set_cookies = 0;
  63         CFS_INIT_LIST_HEAD(&set->set_list);
  64         cfs_atomic_set(&set->set_refcount, 1);
  65         cfs_waitq_init(&set->set_waitq);
  66         cfs_spin_lock_init(&set->set_lock);
  67 }
  68
  69 void lov_finish_set(struct lov_request_set *set)
  70 {
  71         cfs_list_t *pos, *n;
  72         ENTRY;
  73
  74         LASSERT(set);
  75         cfs_list_for_each_safe(pos, n, &set->set_list) {
  76                 struct lov_request *req = cfs_list_entry(pos,
  77                                                          struct lov_request,
  78                                                          rq_link);
  79                 cfs_list_del_init(&req->rq_link);
  80
  81                 if (req->rq_oi.oi_oa)
  82                         OBDO_FREE(req->rq_oi.oi_oa);
  83                 if (req->rq_oi.oi_md)
  84                         OBD_FREE_LARGE(req->rq_oi.oi_md, req->rq_buflen);
  85                 if (req->rq_oi.oi_osfs)
  86                         OBD_FREE(req->rq_oi.oi_osfs,
  87                                  sizeof(*req->rq_oi.oi_osfs));
  88                 OBD_FREE(req, sizeof(*req));
  89         }
  90
  91         if (set->set_pga) {
  92                 int len = set->set_oabufs * sizeof(*set->set_pga);
  93                 OBD_FREE_LARGE(set->set_pga, len);
  94         }
  95         if (set->set_lockh)
  96                 lov_llh_put(set->set_lockh);
  97
  98         OBD_FREE(set, sizeof(*set));
  99         EXIT;
 100 }
 101
 102 int lov_finished_set(struct lov_request_set *set)
 103 {
 104         int completes = cfs_atomic_read(&set->set_completes);
 105
 106         CDEBUG(D_INFO, "check set %d/%d\n", completes,
 107                set->set_count);
 108         return completes == set->set_count;
 109 }
 110
 111 void lov_update_set(struct lov_request_set *set,
 112                     struct lov_request *req, int rc)
 113 {
 114         req->rq_complete = 1;
 115         req->rq_rc = rc;
 116
 117         cfs_atomic_inc(&set->set_completes);
 118         if (rc == 0)
 119                 cfs_atomic_inc(&set->set_success);
 120
 121         cfs_waitq_signal(&set->set_waitq);
 122 }
 123
 124 int lov_update_common_set(struct lov_request_set *set,
 125                           struct lov_request *req, int rc)
 126 {
 127         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 128         ENTRY;
 129
 130         lov_update_set(set, req, rc);
 131
 132         /* grace error on inactive ost */
 133         if (rc && !(lov->lov_tgts[req->rq_idx] &&
 134                     lov->lov_tgts[req->rq_idx]->ltd_active))
 135                 rc = 0;
 136
 137         /* FIXME in raid1 regime, should return 0 */
 138         RETURN(rc);
 139 }
 140
 141 void lov_set_add_req(struct lov_request *req, struct lov_request_set *set)
 142 {
 143         cfs_list_add_tail(&req->rq_link, &set->set_list);
 144         set->set_count++;
 145         req->rq_rqset = set;
 146 }
 147
 148 extern void osc_update_enqueue(struct lustre_handle *lov_lockhp,
 149                                struct lov_oinfo *loi, int flags,
 150                                struct ost_lvb *lvb, __u32 mode, int rc);
 151
 152 static int lov_update_enqueue_lov(struct obd_export *exp,
 153                                   struct lustre_handle *lov_lockhp,
 154                                   struct lov_oinfo *loi, int flags, int idx,
 155                                   __u64 oid, int rc)
 156 {
 157         struct lov_obd *lov = &exp->exp_obd->u.lov;
 158
 159         if (rc != ELDLM_OK &&
 160             !(rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT))) {
 161                 memset(lov_lockhp, 0, sizeof(*lov_lockhp));
 162                 if (lov->lov_tgts[idx] && lov->lov_tgts[idx]->ltd_active) {
 163                         /* -EUSERS used by OST to report file contention */
 164                         if (rc != -EINTR && rc != -EUSERS)
 165                                 CERROR("enqueue objid "LPX64" subobj "
 166                                        LPX64" on OST idx %d: rc %d\n",
 167                                        oid, loi->loi_id, loi->loi_ost_idx, rc);
 168                 } else
 169                         rc = ELDLM_OK;
 170         }
 171         return rc;
 172 }
 173
 174 int lov_update_enqueue_set(struct lov_request *req, __u32 mode, int rc)
 175 {
 176         struct lov_request_set *set = req->rq_rqset;
 177         struct lustre_handle *lov_lockhp;
 178         struct obd_info *oi = set->set_oi;
 179         struct lov_oinfo *loi;
 180         ENTRY;
 181
 182         LASSERT(oi != NULL);
 183
 184         lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
 185         loi = oi->oi_md->lsm_oinfo[req->rq_stripe];
 186
 187         /* XXX LOV STACKING: OSC gets a copy, created in lov_prep_enqueue_set
 188          * and that copy can be arbitrarily out of date.
 189          *
 190          * The LOV API is due for a serious rewriting anyways, and this
 191          * can be addressed then. */
 192
 193         lov_stripe_lock(oi->oi_md);
 194         osc_update_enqueue(lov_lockhp, loi, oi->oi_flags,
 195                            &req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb, mode, rc);
 196         if (rc == ELDLM_LOCK_ABORTED && (oi->oi_flags & LDLM_FL_HAS_INTENT))
 197                 memset(lov_lockhp, 0, sizeof *lov_lockhp);
 198         rc = lov_update_enqueue_lov(set->set_exp, lov_lockhp, loi, oi->oi_flags,
 199                                     req->rq_idx, oi->oi_md->lsm_object_id, rc);
 200         lov_stripe_unlock(oi->oi_md);
 201         lov_update_set(set, req, rc);
 202         RETURN(rc);
 203 }
 204
 205 /* The callback for osc_enqueue that updates lov info for every OSC request. */
 206 static int cb_update_enqueue(void *cookie, int rc)
 207 {
 208         struct obd_info *oinfo = cookie;
 209         struct ldlm_enqueue_info *einfo;
 210         struct lov_request *lovreq;
 211
 212         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 213         einfo = lovreq->rq_rqset->set_ei;
 214         return lov_update_enqueue_set(lovreq, einfo->ei_mode, rc);
 215 }
 216
 217 static int enqueue_done(struct lov_request_set *set, __u32 mode)
 218 {
 219         struct lov_request *req;
 220         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 221         int completes = cfs_atomic_read(&set->set_completes);
 222         int rc = 0;
 223         ENTRY;
 224
 225         /* enqueue/match success, just return */
 226         if (completes && completes == cfs_atomic_read(&set->set_success))
 227                 RETURN(0);
 228
 229         /* cancel enqueued/matched locks */
 230         cfs_list_for_each_entry(req, &set->set_list, rq_link) {
 231                 struct lustre_handle *lov_lockhp;
 232
 233                 if (!req->rq_complete || req->rq_rc)
 234                         continue;
 235
 236                 lov_lockhp = set->set_lockh->llh_handles + req->rq_stripe;
 237                 LASSERT(lov_lockhp);
 238                 if (!lustre_handle_is_used(lov_lockhp))
 239                         continue;
 240
 241                 rc = obd_cancel(lov->lov_tgts[req->rq_idx]->ltd_exp,
 242                                 req->rq_oi.oi_md, mode, lov_lockhp);
 243                 if (rc && lov->lov_tgts[req->rq_idx] &&
 244                     lov->lov_tgts[req->rq_idx]->ltd_active)
 245                         CERROR("cancelling obdjid "LPX64" on OST "
 246                                "idx %d error: rc = %d\n",
 247                                req->rq_oi.oi_md->lsm_object_id,
 248                                req->rq_idx, rc);
 249         }
 250         if (set->set_lockh)
 251                 lov_llh_put(set->set_lockh);
 252         RETURN(rc);
 253 }
 254
 255 int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc,
 256                          struct ptlrpc_request_set *rqset)
 257 {
 258         int ret = 0;
 259         ENTRY;
 260
 261         if (set == NULL)
 262                 RETURN(0);
 263         LASSERT(set->set_exp);
 264         /* Do enqueue_done only for sync requests and if any request
 265          * succeeded. */
 266         if (!rqset) {
 267                 if (rc)
 268                         cfs_atomic_set(&set->set_completes, 0);
 269                 ret = enqueue_done(set, mode);
 270         } else if (set->set_lockh)
 271                 lov_llh_put(set->set_lockh);
 272
 273         lov_put_reqset(set);
 274
 275         RETURN(rc ? rc : ret);
 276 }
 277
 278 int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo,
 279                          struct ldlm_enqueue_info *einfo,
 280                          struct lov_request_set **reqset)
 281 {
 282         struct lov_obd *lov = &exp->exp_obd->u.lov;
 283         struct lov_request_set *set;
 284         int i, rc = 0;
 285         ENTRY;
 286
 287         OBD_ALLOC(set, sizeof(*set));
 288         if (set == NULL)
 289                 RETURN(-ENOMEM);
 290         lov_init_set(set);
 291
 292         set->set_exp = exp;
 293         set->set_oi = oinfo;
 294         set->set_ei = einfo;
 295         set->set_lockh = lov_llh_new(oinfo->oi_md);
 296         if (set->set_lockh == NULL)
 297                 GOTO(out_set, rc = -ENOMEM);
 298         oinfo->oi_lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 299
 300         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
 301                 struct lov_oinfo *loi;
 302                 struct lov_request *req;
 303                 obd_off start, end;
 304
 305                 loi = oinfo->oi_md->lsm_oinfo[i];
 306                 if (!lov_stripe_intersects(oinfo->oi_md, i,
 307                                            oinfo->oi_policy.l_extent.start,
 308                                            oinfo->oi_policy.l_extent.end,
 309                                            &start, &end))
 310                         continue;
 311
 312                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 313                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 314                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 315                         continue;
 316                 }
 317
 318                 OBD_ALLOC(req, sizeof(*req));
 319                 if (req == NULL)
 320                         GOTO(out_set, rc = -ENOMEM);
 321
 322                 req->rq_buflen = sizeof(*req->rq_oi.oi_md) +
 323                         sizeof(struct lov_oinfo *) +
 324                         sizeof(struct lov_oinfo);
 325                 OBD_ALLOC_LARGE(req->rq_oi.oi_md, req->rq_buflen);
 326                 if (req->rq_oi.oi_md == NULL) {
 327                         OBD_FREE(req, sizeof(*req));
 328                         GOTO(out_set, rc = -ENOMEM);
 329                 }
 330                 req->rq_oi.oi_md->lsm_oinfo[0] =
 331                         ((void *)req->rq_oi.oi_md) + sizeof(*req->rq_oi.oi_md) +
 332                         sizeof(struct lov_oinfo *);
 333
 334                 /* Set lov request specific parameters. */
 335                 req->rq_oi.oi_lockh = set->set_lockh->llh_handles + i;
 336                 req->rq_oi.oi_cb_up = cb_update_enqueue;
 337                 req->rq_oi.oi_flags = oinfo->oi_flags;
 338
 339                 LASSERT(req->rq_oi.oi_lockh);
 340
 341                 req->rq_oi.oi_policy.l_extent.gid =
 342                         oinfo->oi_policy.l_extent.gid;
 343                 req->rq_oi.oi_policy.l_extent.start = start;
 344                 req->rq_oi.oi_policy.l_extent.end = end;
 345
 346                 req->rq_idx = loi->loi_ost_idx;
 347                 req->rq_stripe = i;
 348
 349                 /* XXX LOV STACKING: submd should be from the subobj */
 350                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 351                 req->rq_oi.oi_md->lsm_object_seq = loi->loi_seq;
 352                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 353                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_kms_valid =
 354                         loi->loi_kms_valid;
 355                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_kms = loi->loi_kms;
 356                 req->rq_oi.oi_md->lsm_oinfo[0]->loi_lvb = loi->loi_lvb;
 357
 358                 lov_set_add_req(req, set);
 359         }
 360         if (!set->set_count)
 361                 GOTO(out_set, rc = -EIO);
 362         *reqset = set;
 363         RETURN(0);
 364 out_set:
 365         lov_fini_enqueue_set(set, einfo->ei_mode, rc, NULL);
 366         RETURN(rc);
 367 }
 368
 369 int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags)
 370 {
 371         int rc = 0;
 372         ENTRY;
 373
 374         if (set == NULL)
 375                 RETURN(0);
 376         LASSERT(set->set_exp);
 377         rc = enqueue_done(set, mode);
 378         if ((set->set_count == cfs_atomic_read(&set->set_success)) &&
 379             (flags & LDLM_FL_TEST_LOCK))
 380                 lov_llh_put(set->set_lockh);
 381
 382         lov_put_reqset(set);
 383
 384         RETURN(rc);
 385 }
 386
 387 int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo,
 388                        struct lov_stripe_md *lsm, ldlm_policy_data_t *policy,
 389                        __u32 mode, struct lustre_handle *lockh,
 390                        struct lov_request_set **reqset)
 391 {
 392         struct lov_obd *lov = &exp->exp_obd->u.lov;
 393         struct lov_request_set *set;
 394         int i, rc = 0;
 395         ENTRY;
 396
 397         OBD_ALLOC(set, sizeof(*set));
 398         if (set == NULL)
 399                 RETURN(-ENOMEM);
 400         lov_init_set(set);
 401
 402         set->set_exp = exp;
 403         set->set_oi = oinfo;
 404         set->set_oi->oi_md = lsm;
 405         set->set_lockh = lov_llh_new(lsm);
 406         if (set->set_lockh == NULL)
 407                 GOTO(out_set, rc = -ENOMEM);
 408         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 409
 410         for (i = 0; i < lsm->lsm_stripe_count; i++){
 411                 struct lov_oinfo *loi;
 412                 struct lov_request *req;
 413                 obd_off start, end;
 414
 415                 loi = lsm->lsm_oinfo[i];
 416                 if (!lov_stripe_intersects(lsm, i, policy->l_extent.start,
 417                                            policy->l_extent.end, &start, &end))
 418                         continue;
 419
 420                 /* FIXME raid1 should grace this error */
 421                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 422                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 423                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 424                         GOTO(out_set, rc = -EIO);
 425                 }
 426
 427                 OBD_ALLOC(req, sizeof(*req));
 428                 if (req == NULL)
 429                         GOTO(out_set, rc = -ENOMEM);
 430
 431                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 432                 OBD_ALLOC_LARGE(req->rq_oi.oi_md, req->rq_buflen);
 433                 if (req->rq_oi.oi_md == NULL) {
 434                         OBD_FREE(req, sizeof(*req));
 435                         GOTO(out_set, rc = -ENOMEM);
 436                 }
 437
 438                 req->rq_oi.oi_policy.l_extent.start = start;
 439                 req->rq_oi.oi_policy.l_extent.end = end;
 440                 req->rq_oi.oi_policy.l_extent.gid = policy->l_extent.gid;
 441
 442                 req->rq_idx = loi->loi_ost_idx;
 443                 req->rq_stripe = i;
 444
 445                 /* XXX LOV STACKING: submd should be from the subobj */
 446                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 447                 req->rq_oi.oi_md->lsm_object_seq = loi->loi_seq;
 448                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 449
 450                 lov_set_add_req(req, set);
 451         }
 452         if (!set->set_count)
 453                 GOTO(out_set, rc = -EIO);
 454         *reqset = set;
 455         RETURN(rc);
 456 out_set:
 457         lov_fini_match_set(set, mode, 0);
 458         RETURN(rc);
 459 }
 460
 461 int lov_fini_cancel_set(struct lov_request_set *set)
 462 {
 463         int rc = 0;
 464         ENTRY;
 465
 466         if (set == NULL)
 467                 RETURN(0);
 468
 469         LASSERT(set->set_exp);
 470         if (set->set_lockh)
 471                 lov_llh_put(set->set_lockh);
 472
 473         lov_put_reqset(set);
 474
 475         RETURN(rc);
 476 }
 477
 478 int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo,
 479                         struct lov_stripe_md *lsm, __u32 mode,
 480                         struct lustre_handle *lockh,
 481                         struct lov_request_set **reqset)
 482 {
 483         struct lov_request_set *set;
 484         int i, rc = 0;
 485         ENTRY;
 486
 487         OBD_ALLOC(set, sizeof(*set));
 488         if (set == NULL)
 489                 RETURN(-ENOMEM);
 490         lov_init_set(set);
 491
 492         set->set_exp = exp;
 493         set->set_oi = oinfo;
 494         set->set_oi->oi_md = lsm;
 495         set->set_lockh = lov_handle2llh(lockh);
 496         if (set->set_lockh == NULL) {
 497                 CERROR("LOV: invalid lov lock handle %p\n", lockh);
 498                 GOTO(out_set, rc = -EINVAL);
 499         }
 500         lockh->cookie = set->set_lockh->llh_handle.h_cookie;
 501
 502         for (i = 0; i < lsm->lsm_stripe_count; i++){
 503                 struct lov_request *req;
 504                 struct lustre_handle *lov_lockhp;
 505                 struct lov_oinfo *loi = lsm->lsm_oinfo[i];
 506
 507                 lov_lockhp = set->set_lockh->llh_handles + i;
 508                 if (!lustre_handle_is_used(lov_lockhp)) {
 509                         CDEBUG(D_INFO, "lov idx %d subobj "LPX64" no lock\n",
 510                                loi->loi_ost_idx, loi->loi_id);
 511                         continue;
 512                 }
 513
 514                 OBD_ALLOC(req, sizeof(*req));
 515                 if (req == NULL)
 516                         GOTO(out_set, rc = -ENOMEM);
 517
 518                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 519                 OBD_ALLOC_LARGE(req->rq_oi.oi_md, req->rq_buflen);
 520                 if (req->rq_oi.oi_md == NULL) {
 521                         OBD_FREE(req, sizeof(*req));
 522                         GOTO(out_set, rc = -ENOMEM);
 523                 }
 524
 525                 req->rq_idx = loi->loi_ost_idx;
 526                 req->rq_stripe = i;
 527
 528                 /* XXX LOV STACKING: submd should be from the subobj */
 529                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 530                 req->rq_oi.oi_md->lsm_object_seq = loi->loi_seq;
 531                 req->rq_oi.oi_md->lsm_stripe_count = 0;
 532
 533                 lov_set_add_req(req, set);
 534         }
 535         if (!set->set_count)
 536                 GOTO(out_set, rc = -EIO);
 537         *reqset = set;
 538         RETURN(rc);
 539 out_set:
 540         lov_fini_cancel_set(set);
 541         RETURN(rc);
 542 }
 543
 544 static int lov_update_create_set(struct lov_request_set *set,
 545                                  struct lov_request *req, int rc)
 546 {
 547         struct obd_trans_info *oti = set->set_oti;
 548         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 549         struct lov_oinfo *loi;
 550         struct lov_obd *lov = &set->set_exp->exp_obd->u.lov;
 551         ENTRY;
 552
 553         if (rc && lov->lov_tgts[req->rq_idx] &&
 554             lov->lov_tgts[req->rq_idx]->ltd_active) {
 555                 CERROR("error creating fid "LPX64" sub-object"
 556                        " on OST idx %d/%d: rc = %d\n",
 557                        set->set_oi->oi_oa->o_id, req->rq_idx,
 558                        lsm->lsm_stripe_count, rc);
 559                 if (rc > 0) {
 560                         CERROR("obd_create returned invalid err %d\n", rc);
 561                         rc = -EIO;
 562                 }
 563         }
 564
 565         cfs_spin_lock(&set->set_lock);
 566         req->rq_stripe = cfs_atomic_read(&set->set_success);
 567         loi = lsm->lsm_oinfo[req->rq_stripe];
 568
 569
 570         if (rc) {
 571                 lov_update_set(set, req, rc);
 572                 cfs_spin_unlock(&set->set_lock);
 573                 RETURN(rc);
 574         }
 575
 576         loi->loi_id = req->rq_oi.oi_oa->o_id;
 577         loi->loi_seq = req->rq_oi.oi_oa->o_seq;
 578         loi->loi_ost_idx = req->rq_idx;
 579         loi_init(loi);
 580
 581         if (oti && set->set_cookies)
 582                 ++oti->oti_logcookies;
 583         if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCOOKIE)
 584                 set->set_cookie_sent++;
 585
 586         lov_update_set(set, req, rc);
 587         cfs_spin_unlock(&set->set_lock);
 588
 589         CDEBUG(D_INODE, "objid "LPX64" has subobj "LPX64"/"LPU64" at idx %d\n",
 590                lsm->lsm_object_id, loi->loi_id, loi->loi_id, req->rq_idx);
 591         RETURN(rc);
 592 }
 593
 594 static int create_done(struct obd_export *exp, struct lov_request_set *set,
 595                        struct lov_stripe_md **lsmp)
 596 {
 597         struct lov_obd *lov = &exp->exp_obd->u.lov;
 598         struct obd_trans_info *oti = set->set_oti;
 599         struct obdo *src_oa = set->set_oi->oi_oa;
 600         struct lov_request *req;
 601         struct obdo *ret_oa = NULL;
 602         int success, attrset = 0, rc = 0;
 603         ENTRY;
 604
 605         LASSERT(cfs_atomic_read(&set->set_completes));
 606
 607         /* try alloc objects on other osts if osc_create fails for
 608          * exceptions: RPC failure, ENOSPC, etc */
 609         if (set->set_count != cfs_atomic_read(&set->set_success)) {
 610                 cfs_list_for_each_entry (req, &set->set_list, rq_link) {
 611                         if (req->rq_rc == 0)
 612                                 continue;
 613
 614                         cfs_atomic_dec(&set->set_completes);
 615                         req->rq_complete = 0;
 616
 617                         rc = qos_remedy_create(set, req);
 618                         lov_update_create_set(set, req, rc);
 619                 }
 620         }
 621
 622         success = cfs_atomic_read(&set->set_success);
 623         /* no successful creates */
 624         if (success == 0)
 625                 GOTO(cleanup, rc);
 626
 627         if (set->set_count != success) {
 628                 set->set_count = success;
 629                 qos_shrink_lsm(set);
 630         }
 631
 632         OBDO_ALLOC(ret_oa);
 633         if (ret_oa == NULL)
 634                 GOTO(cleanup, rc = -ENOMEM);
 635
 636         cfs_list_for_each_entry(req, &set->set_list, rq_link) {
 637                 if (!req->rq_complete || req->rq_rc)
 638                         continue;
 639                 lov_merge_attrs(ret_oa, req->rq_oi.oi_oa,
 640                                 req->rq_oi.oi_oa->o_valid, set->set_oi->oi_md,
 641                                 req->rq_stripe, &attrset);
 642         }
 643         if (src_oa->o_valid & OBD_MD_FLSIZE &&
 644             ret_oa->o_size != src_oa->o_size) {
 645                 CERROR("original size "LPU64" isn't new object size "LPU64"\n",
 646                        src_oa->o_size, ret_oa->o_size);
 647                 LBUG();
 648         }
 649         ret_oa->o_id = src_oa->o_id;
 650         ret_oa->o_seq = src_oa->o_seq;
 651         ret_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
 652         memcpy(src_oa, ret_oa, sizeof(*src_oa));
 653         OBDO_FREE(ret_oa);
 654
 655         *lsmp = set->set_oi->oi_md;
 656         GOTO(done, rc = 0);
 657
 658 cleanup:
 659         cfs_list_for_each_entry(req, &set->set_list, rq_link) {
 660                 struct obd_export *sub_exp;
 661                 int err = 0;
 662
 663                 if (!req->rq_complete || req->rq_rc)
 664                         continue;
 665
 666                 sub_exp = lov->lov_tgts[req->rq_idx]->ltd_exp;
 667                 err = obd_destroy(sub_exp, req->rq_oi.oi_oa, NULL, oti, NULL,
 668                                   NULL);
 669                 if (err)
 670                         CERROR("Failed to uncreate objid "LPX64" subobj "
 671                                LPX64" on OST idx %d: rc = %d\n",
 672                                src_oa->o_id, req->rq_oi.oi_oa->o_id,
 673                                req->rq_idx, rc);
 674         }
 675         if (*lsmp == NULL)
 676                 obd_free_memmd(exp, &set->set_oi->oi_md);
 677 done:
 678         if (oti && set->set_cookies) {
 679                 oti->oti_logcookies = set->set_cookies;
 680                 if (!set->set_cookie_sent) {
 681                         oti_free_cookies(oti);
 682                         src_oa->o_valid &= ~OBD_MD_FLCOOKIE;
 683                 } else {
 684                         src_oa->o_valid |= OBD_MD_FLCOOKIE;
 685                 }
 686         }
 687         RETURN(rc);
 688 }
 689
 690 int lov_fini_create_set(struct lov_request_set *set,struct lov_stripe_md **lsmp)
 691 {
 692         int rc = 0;
 693         ENTRY;
 694
 695         if (set == NULL)
 696                 RETURN(0);
 697         LASSERT(set->set_exp);
 698         if (cfs_atomic_read(&set->set_completes))
 699                 rc = create_done(set->set_exp, set, lsmp);
 700
 701         lov_put_reqset(set);
 702         RETURN(rc);
 703 }
 704
 705 int cb_create_update(void *cookie, int rc)
 706 {
 707         struct obd_info *oinfo = cookie;
 708         struct lov_request *lovreq;
 709
 710         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 711
 712         if (CFS_FAIL_CHECK(OBD_FAIL_MDS_OSC_CREATE_FAIL))
 713                 if (lovreq->rq_idx == cfs_fail_val)
 714                         rc = -ENOTCONN;
 715
 716         rc= lov_update_create_set(lovreq->rq_rqset, lovreq, rc);
 717         if (lov_finished_set(lovreq->rq_rqset))
 718                 lov_put_reqset(lovreq->rq_rqset);
 719         return rc;
 720 }
 721
 722 int lov_prep_create_set(struct obd_export *exp, struct obd_info *oinfo,
 723                         struct lov_stripe_md **lsmp, struct obdo *src_oa,
 724                         struct obd_trans_info *oti,
 725                         struct lov_request_set **reqset)
 726 {
 727         struct lov_request_set *set;
 728         int rc = 0;
 729         ENTRY;
 730
 731         OBD_ALLOC(set, sizeof(*set));
 732         if (set == NULL)
 733                 RETURN(-ENOMEM);
 734         lov_init_set(set);
 735
 736         set->set_exp = exp;
 737         set->set_oi = oinfo;
 738         set->set_oi->oi_md = *lsmp;
 739         set->set_oi->oi_oa = src_oa;
 740         set->set_oti = oti;
 741         lov_get_reqset(set);
 742
 743         rc = qos_prep_create(exp, set);
 744         /* qos_shrink_lsm() may have allocated a new lsm */
 745         *lsmp = oinfo->oi_md;
 746         if (rc) {
 747                 lov_fini_create_set(set, lsmp);
 748                 lov_put_reqset(set);
 749         } else {
 750                 *reqset = set;
 751         }
 752         RETURN(rc);
 753 }
 754
 755 static int common_attr_done(struct lov_request_set *set)
 756 {
 757         cfs_list_t *pos;
 758         struct lov_request *req;
 759         struct obdo *tmp_oa;
 760         int rc = 0, attrset = 0;
 761         ENTRY;
 762
 763         LASSERT(set->set_oi != NULL);
 764
 765         if (set->set_oi->oi_oa == NULL)
 766                 RETURN(0);
 767
 768         if (!cfs_atomic_read(&set->set_success))
 769                 RETURN(-EIO);
 770
 771         OBDO_ALLOC(tmp_oa);
 772         if (tmp_oa == NULL)
 773                 GOTO(out, rc = -ENOMEM);
 774
 775         cfs_list_for_each (pos, &set->set_list) {
 776                 req = cfs_list_entry(pos, struct lov_request, rq_link);
 777
 778                 if (!req->rq_complete || req->rq_rc)
 779                         continue;
 780                 if (req->rq_oi.oi_oa->o_valid == 0)   /* inactive stripe */
 781                         continue;
 782                 lov_merge_attrs(tmp_oa, req->rq_oi.oi_oa,
 783                                 req->rq_oi.oi_oa->o_valid,
 784                                 set->set_oi->oi_md, req->rq_stripe, &attrset);
 785         }
 786         if (!attrset) {
 787                 CERROR("No stripes had valid attrs\n");
 788                 rc = -EIO;
 789         }
 790         if ((set->set_oi->oi_oa->o_valid & OBD_MD_FLEPOCH) &&
 791             (set->set_oi->oi_md->lsm_stripe_count != attrset)) {
 792                 /* When we take attributes of some epoch, we require all the
 793                  * ost to be active. */
 794                 CERROR("Not all the stripes had valid attrs\n");
 795                 GOTO(out, rc = -EIO);
 796         }
 797
 798         tmp_oa->o_id = set->set_oi->oi_oa->o_id;
 799         memcpy(set->set_oi->oi_oa, tmp_oa, sizeof(*set->set_oi->oi_oa));
 800 out:
 801         if (tmp_oa)
 802                 OBDO_FREE(tmp_oa);
 803         RETURN(rc);
 804
 805 }
 806
 807 static int brw_done(struct lov_request_set *set)
 808 {
 809         struct lov_stripe_md *lsm = set->set_oi->oi_md;
 810         struct lov_oinfo     *loi = NULL;
 811         cfs_list_t *pos;
 812         struct lov_request *req;
 813         ENTRY;
 814
 815         cfs_list_for_each (pos, &set->set_list) {
 816                 req = cfs_list_entry(pos, struct lov_request, rq_link);
 817
 818                 if (!req->rq_complete || req->rq_rc)
 819                         continue;
 820
 821                 loi = lsm->lsm_oinfo[req->rq_stripe];
 822
 823                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS)
 824                         loi->loi_lvb.lvb_blocks = req->rq_oi.oi_oa->o_blocks;
 825         }
 826
 827         RETURN(0);
 828 }
 829
 830 int lov_fini_brw_set(struct lov_request_set *set)
 831 {
 832         int rc = 0;
 833         ENTRY;
 834
 835         if (set == NULL)
 836                 RETURN(0);
 837         LASSERT(set->set_exp);
 838         if (cfs_atomic_read(&set->set_completes)) {
 839                 rc = brw_done(set);
 840                 /* FIXME update qos data here */
 841         }
 842         lov_put_reqset(set);
 843
 844         RETURN(rc);
 845 }
 846
 847 int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo,
 848                      obd_count oa_bufs, struct brw_page *pga,
 849                      struct obd_trans_info *oti,
 850                      struct lov_request_set **reqset)
 851 {
 852         struct {
 853                 obd_count       index;
 854                 obd_count       count;
 855                 obd_count       off;
 856         } *info = NULL;
 857         struct lov_request_set *set;
 858         struct lov_obd *lov = &exp->exp_obd->u.lov;
 859         int rc = 0, i, shift;
 860         ENTRY;
 861
 862         OBD_ALLOC(set, sizeof(*set));
 863         if (set == NULL)
 864                 RETURN(-ENOMEM);
 865         lov_init_set(set);
 866
 867         set->set_exp = exp;
 868         set->set_oti = oti;
 869         set->set_oi = oinfo;
 870         set->set_oabufs = oa_bufs;
 871         OBD_ALLOC_LARGE(set->set_pga, oa_bufs * sizeof(*set->set_pga));
 872         if (!set->set_pga)
 873                 GOTO(out, rc = -ENOMEM);
 874
 875         OBD_ALLOC_LARGE(info, sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 876         if (!info)
 877                 GOTO(out, rc = -ENOMEM);
 878
 879         /* calculate the page count for each stripe */
 880         for (i = 0; i < oa_bufs; i++) {
 881                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 882                 info[stripe].count++;
 883         }
 884
 885         /* alloc and initialize lov request */
 886         shift = 0;
 887         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++){
 888                 struct lov_oinfo *loi = NULL;
 889                 struct lov_request *req;
 890
 891                 if (info[i].count == 0)
 892                         continue;
 893
 894                 loi = oinfo->oi_md->lsm_oinfo[i];
 895                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
 896                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
 897                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
 898                         GOTO(out, rc = -EIO);
 899                 }
 900
 901                 OBD_ALLOC(req, sizeof(*req));
 902                 if (req == NULL)
 903                         GOTO(out, rc = -ENOMEM);
 904
 905                 OBDO_ALLOC(req->rq_oi.oi_oa);
 906                 if (req->rq_oi.oi_oa == NULL) {
 907                         OBD_FREE(req, sizeof(*req));
 908                         GOTO(out, rc = -ENOMEM);
 909                 }
 910
 911                 if (oinfo->oi_oa) {
 912                         memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
 913                                sizeof(*req->rq_oi.oi_oa));
 914                 }
 915                 req->rq_oi.oi_oa->o_id = loi->loi_id;
 916                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
 917                 req->rq_oi.oi_oa->o_stripe_idx = i;
 918
 919                 req->rq_buflen = sizeof(*req->rq_oi.oi_md);
 920                 OBD_ALLOC_LARGE(req->rq_oi.oi_md, req->rq_buflen);
 921                 if (req->rq_oi.oi_md == NULL) {
 922                         OBDO_FREE(req->rq_oi.oi_oa);
 923                         OBD_FREE(req, sizeof(*req));
 924                         GOTO(out, rc = -ENOMEM);
 925                 }
 926
 927                 req->rq_idx = loi->loi_ost_idx;
 928                 req->rq_stripe = i;
 929
 930                 /* XXX LOV STACKING */
 931                 req->rq_oi.oi_md->lsm_object_id = loi->loi_id;
 932                 req->rq_oi.oi_md->lsm_object_seq = loi->loi_seq;
 933                 req->rq_oabufs = info[i].count;
 934                 req->rq_pgaidx = shift;
 935                 shift += req->rq_oabufs;
 936
 937                 /* remember the index for sort brw_page array */
 938                 info[i].index = req->rq_pgaidx;
 939
 940                 req->rq_oi.oi_capa = oinfo->oi_capa;
 941
 942                 lov_set_add_req(req, set);
 943         }
 944         if (!set->set_count)
 945                 GOTO(out, rc = -EIO);
 946
 947         /* rotate & sort the brw_page array */
 948         for (i = 0; i < oa_bufs; i++) {
 949                 int stripe = lov_stripe_number(oinfo->oi_md, pga[i].off);
 950
 951                 shift = info[stripe].index + info[stripe].off;
 952                 LASSERT(shift < oa_bufs);
 953                 set->set_pga[shift] = pga[i];
 954                 lov_stripe_offset(oinfo->oi_md, pga[i].off, stripe,
 955                                   &set->set_pga[shift].off);
 956                 info[stripe].off++;
 957         }
 958 out:
 959         if (info)
 960                 OBD_FREE_LARGE(info,
 961                                sizeof(*info) * oinfo->oi_md->lsm_stripe_count);
 962
 963         if (rc == 0)
 964                 *reqset = set;
 965         else
 966                 lov_fini_brw_set(set);
 967
 968         RETURN(rc);
 969 }
 970
 971 int lov_fini_getattr_set(struct lov_request_set *set)
 972 {
 973         int rc = 0;
 974         ENTRY;
 975
 976         if (set == NULL)
 977                 RETURN(0);
 978         LASSERT(set->set_exp);
 979         if (cfs_atomic_read(&set->set_completes))
 980                 rc = common_attr_done(set);
 981
 982         lov_put_reqset(set);
 983
 984         RETURN(rc);
 985 }
 986
 987 /* The callback for osc_getattr_async that finilizes a request info when a
 988  * response is received. */
 989 static int cb_getattr_update(void *cookie, int rc)
 990 {
 991         struct obd_info *oinfo = cookie;
 992         struct lov_request *lovreq;
 993         lovreq = container_of(oinfo, struct lov_request, rq_oi);
 994         return lov_update_common_set(lovreq->rq_rqset, lovreq, rc);
 995 }
 996
 997 int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo,
 998                          struct lov_request_set **reqset)
 999 {
1000         struct lov_request_set *set;
1001         struct lov_obd *lov = &exp->exp_obd->u.lov;
1002         int rc = 0, i;
1003         ENTRY;
1004
1005         OBD_ALLOC(set, sizeof(*set));
1006         if (set == NULL)
1007                 RETURN(-ENOMEM);
1008         lov_init_set(set);
1009
1010         set->set_exp = exp;
1011         set->set_oi = oinfo;
1012
1013         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1014                 struct lov_oinfo *loi;
1015                 struct lov_request *req;
1016
1017                 loi = oinfo->oi_md->lsm_oinfo[i];
1018                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1019                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1020                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1021                         if (oinfo->oi_oa->o_valid & OBD_MD_FLEPOCH)
1022                                 /* SOM requires all the OSTs to be active. */
1023                                 GOTO(out_set, rc = -EIO);
1024                         continue;
1025                 }
1026
1027                 OBD_ALLOC(req, sizeof(*req));
1028                 if (req == NULL)
1029                         GOTO(out_set, rc = -ENOMEM);
1030
1031                 req->rq_stripe = i;
1032                 req->rq_idx = loi->loi_ost_idx;
1033
1034                 OBDO_ALLOC(req->rq_oi.oi_oa);
1035                 if (req->rq_oi.oi_oa == NULL) {
1036                         OBD_FREE(req, sizeof(*req));
1037                         GOTO(out_set, rc = -ENOMEM);
1038                 }
1039                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1040                        sizeof(*req->rq_oi.oi_oa));
1041                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1042                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
1043                 req->rq_oi.oi_cb_up = cb_getattr_update;
1044                 req->rq_oi.oi_capa = oinfo->oi_capa;
1045
1046                 lov_set_add_req(req, set);
1047         }
1048         if (!set->set_count)
1049                 GOTO(out_set, rc = -EIO);
1050         *reqset = set;
1051         RETURN(rc);
1052 out_set:
1053         lov_fini_getattr_set(set);
1054         RETURN(rc);
1055 }
1056
1057 int lov_fini_destroy_set(struct lov_request_set *set)
1058 {
1059         ENTRY;
1060
1061         if (set == NULL)
1062                 RETURN(0);
1063         LASSERT(set->set_exp);
1064         if (cfs_atomic_read(&set->set_completes)) {
1065                 /* FIXME update qos data here */
1066         }
1067
1068         lov_put_reqset(set);
1069
1070         RETURN(0);
1071 }
1072
1073 int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo,
1074                          struct obdo *src_oa, struct lov_stripe_md *lsm,
1075                          struct obd_trans_info *oti,
1076                          struct lov_request_set **reqset)
1077 {
1078         struct lov_request_set *set;
1079         struct lov_obd *lov = &exp->exp_obd->u.lov;
1080         int rc = 0, i;
1081         ENTRY;
1082
1083         OBD_ALLOC(set, sizeof(*set));
1084         if (set == NULL)
1085                 RETURN(-ENOMEM);
1086         lov_init_set(set);
1087
1088         set->set_exp = exp;
1089         set->set_oi = oinfo;
1090         set->set_oi->oi_md = lsm;
1091         set->set_oi->oi_oa = src_oa;
1092         set->set_oti = oti;
1093         if (oti != NULL && src_oa->o_valid & OBD_MD_FLCOOKIE)
1094                 set->set_cookies = oti->oti_logcookies;
1095
1096         for (i = 0; i < lsm->lsm_stripe_count; i++) {
1097                 struct lov_oinfo *loi;
1098                 struct lov_request *req;
1099
1100                 loi = lsm->lsm_oinfo[i];
1101                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1102                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1103                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1104                         continue;
1105                 }
1106
1107                 OBD_ALLOC(req, sizeof(*req));
1108                 if (req == NULL)
1109                         GOTO(out_set, rc = -ENOMEM);
1110
1111                 req->rq_stripe = i;
1112                 req->rq_idx = loi->loi_ost_idx;
1113
1114                 OBDO_ALLOC(req->rq_oi.oi_oa);
1115                 if (req->rq_oi.oi_oa == NULL) {
1116                         OBD_FREE(req, sizeof(*req));
1117                         GOTO(out_set, rc = -ENOMEM);
1118                 }
1119                 memcpy(req->rq_oi.oi_oa, src_oa, sizeof(*req->rq_oi.oi_oa));
1120                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1121                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
1122                 lov_set_add_req(req, set);
1123         }
1124         if (!set->set_count)
1125                 GOTO(out_set, rc = -EIO);
1126         *reqset = set;
1127         RETURN(rc);
1128 out_set:
1129         lov_fini_destroy_set(set);
1130         RETURN(rc);
1131 }
1132
1133 int lov_fini_setattr_set(struct lov_request_set *set)
1134 {
1135         int rc = 0;
1136         ENTRY;
1137
1138         if (set == NULL)
1139                 RETURN(0);
1140         LASSERT(set->set_exp);
1141         if (cfs_atomic_read(&set->set_completes)) {
1142                 rc = common_attr_done(set);
1143                 /* FIXME update qos data here */
1144         }
1145
1146         lov_put_reqset(set);
1147         RETURN(rc);
1148 }
1149
1150 int lov_update_setattr_set(struct lov_request_set *set,
1151                            struct lov_request *req, int rc)
1152 {
1153         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1154         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1155         ENTRY;
1156
1157         lov_update_set(set, req, rc);
1158
1159         /* grace error on inactive ost */
1160         if (rc && !(lov->lov_tgts[req->rq_idx] &&
1161                     lov->lov_tgts[req->rq_idx]->ltd_active))
1162                 rc = 0;
1163
1164         if (rc == 0) {
1165                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLCTIME)
1166                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_ctime =
1167                                 req->rq_oi.oi_oa->o_ctime;
1168                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLMTIME)
1169                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_mtime =
1170                                 req->rq_oi.oi_oa->o_mtime;
1171                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLATIME)
1172                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_atime =
1173                                 req->rq_oi.oi_oa->o_atime;
1174         }
1175
1176         RETURN(rc);
1177 }
1178
1179 /* The callback for osc_setattr_async that finilizes a request info when a
1180  * response is received. */
1181 static int cb_setattr_update(void *cookie, int rc)
1182 {
1183         struct obd_info *oinfo = cookie;
1184         struct lov_request *lovreq;
1185         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1186         return lov_update_setattr_set(lovreq->rq_rqset, lovreq, rc);
1187 }
1188
1189 int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo,
1190                          struct obd_trans_info *oti,
1191                          struct lov_request_set **reqset)
1192 {
1193         struct lov_request_set *set;
1194         struct lov_obd *lov = &exp->exp_obd->u.lov;
1195         int rc = 0, i;
1196         ENTRY;
1197
1198         OBD_ALLOC(set, sizeof(*set));
1199         if (set == NULL)
1200                 RETURN(-ENOMEM);
1201         lov_init_set(set);
1202
1203         set->set_exp = exp;
1204         set->set_oti = oti;
1205         set->set_oi = oinfo;
1206         if (oti != NULL && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
1207                 set->set_cookies = oti->oti_logcookies;
1208
1209         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1210                 struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
1211                 struct lov_request *req;
1212
1213                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1214                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1215                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1216                         continue;
1217                 }
1218
1219                 OBD_ALLOC(req, sizeof(*req));
1220                 if (req == NULL)
1221                         GOTO(out_set, rc = -ENOMEM);
1222                 req->rq_stripe = i;
1223                 req->rq_idx = loi->loi_ost_idx;
1224
1225                 OBDO_ALLOC(req->rq_oi.oi_oa);
1226                 if (req->rq_oi.oi_oa == NULL) {
1227                         OBD_FREE(req, sizeof(*req));
1228                         GOTO(out_set, rc = -ENOMEM);
1229                 }
1230                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1231                        sizeof(*req->rq_oi.oi_oa));
1232                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1233                 req->rq_oi.oi_oa->o_seq= loi->loi_seq;
1234                 req->rq_oi.oi_oa->o_stripe_idx = i;
1235                 req->rq_oi.oi_cb_up = cb_setattr_update;
1236                 req->rq_oi.oi_capa = oinfo->oi_capa;
1237
1238                 if (oinfo->oi_oa->o_valid & OBD_MD_FLSIZE) {
1239                         int off = lov_stripe_offset(oinfo->oi_md,
1240                                                     oinfo->oi_oa->o_size, i,
1241                                                     &req->rq_oi.oi_oa->o_size);
1242
1243                         if (off < 0 && req->rq_oi.oi_oa->o_size)
1244                                 req->rq_oi.oi_oa->o_size--;
1245
1246                         CDEBUG(D_INODE, "stripe %d has size "LPU64"/"LPU64"\n",
1247                                i, req->rq_oi.oi_oa->o_size,
1248                                oinfo->oi_oa->o_size);
1249                 }
1250                 lov_set_add_req(req, set);
1251         }
1252         if (!set->set_count)
1253                 GOTO(out_set, rc = -EIO);
1254         *reqset = set;
1255         RETURN(rc);
1256 out_set:
1257         lov_fini_setattr_set(set);
1258         RETURN(rc);
1259 }
1260
1261 int lov_fini_punch_set(struct lov_request_set *set)
1262 {
1263         int rc = 0;
1264         ENTRY;
1265
1266         if (set == NULL)
1267                 RETURN(0);
1268         LASSERT(set->set_exp);
1269         if (cfs_atomic_read(&set->set_completes)) {
1270                 rc = -EIO;
1271                 /* FIXME update qos data here */
1272                 if (cfs_atomic_read(&set->set_success))
1273                         rc = common_attr_done(set);
1274         }
1275
1276         lov_put_reqset(set);
1277
1278         RETURN(rc);
1279 }
1280
1281 int lov_update_punch_set(struct lov_request_set *set,
1282                          struct lov_request *req, int rc)
1283 {
1284         struct lov_obd *lov = &req->rq_rqset->set_exp->exp_obd->u.lov;
1285         struct lov_stripe_md *lsm = req->rq_rqset->set_oi->oi_md;
1286         ENTRY;
1287
1288         lov_update_set(set, req, rc);
1289
1290         /* grace error on inactive ost */
1291         if (rc && !lov->lov_tgts[req->rq_idx]->ltd_active)
1292                 rc = 0;
1293
1294         if (rc == 0) {
1295                 lov_stripe_lock(lsm);
1296                 if (req->rq_oi.oi_oa->o_valid & OBD_MD_FLBLOCKS) {
1297                         lsm->lsm_oinfo[req->rq_stripe]->loi_lvb.lvb_blocks =
1298                                 req->rq_oi.oi_oa->o_blocks;
1299                 }
1300
1301                 /* Do we need to update lvb_size here? It needn't because
1302                  * it have been done in ll_truncate(). -jay */
1303                 lov_stripe_unlock(lsm);
1304         }
1305
1306         RETURN(rc);
1307 }
1308
1309 /* The callback for osc_punch that finilizes a request info when a response
1310  * is received. */
1311 static int cb_update_punch(void *cookie, int rc)
1312 {
1313         struct obd_info *oinfo = cookie;
1314         struct lov_request *lovreq;
1315         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1316         return lov_update_punch_set(lovreq->rq_rqset, lovreq, rc);
1317 }
1318
1319 int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo,
1320                        struct obd_trans_info *oti,
1321                        struct lov_request_set **reqset)
1322 {
1323         struct lov_request_set *set;
1324         struct lov_obd *lov = &exp->exp_obd->u.lov;
1325         int rc = 0, i;
1326         ENTRY;
1327
1328         OBD_ALLOC(set, sizeof(*set));
1329         if (set == NULL)
1330                 RETURN(-ENOMEM);
1331         lov_init_set(set);
1332
1333         set->set_oi = oinfo;
1334         set->set_exp = exp;
1335
1336         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1337                 struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
1338                 struct lov_request *req;
1339                 obd_off rs, re;
1340
1341                 if (!lov_stripe_intersects(oinfo->oi_md, i,
1342                                            oinfo->oi_policy.l_extent.start,
1343                                            oinfo->oi_policy.l_extent.end,
1344                                            &rs, &re))
1345                         continue;
1346
1347                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1348                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1349                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1350                         GOTO(out_set, rc = -EIO);
1351                 }
1352
1353                 OBD_ALLOC(req, sizeof(*req));
1354                 if (req == NULL)
1355                         GOTO(out_set, rc = -ENOMEM);
1356                 req->rq_stripe = i;
1357                 req->rq_idx = loi->loi_ost_idx;
1358
1359                 OBDO_ALLOC(req->rq_oi.oi_oa);
1360                 if (req->rq_oi.oi_oa == NULL) {
1361                         OBD_FREE(req, sizeof(*req));
1362                         GOTO(out_set, rc = -ENOMEM);
1363                 }
1364                 memcpy(req->rq_oi.oi_oa, oinfo->oi_oa,
1365                        sizeof(*req->rq_oi.oi_oa));
1366                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1367                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
1368                 req->rq_oi.oi_oa->o_valid |= OBD_MD_FLGROUP;
1369
1370                 req->rq_oi.oi_oa->o_stripe_idx = i;
1371                 req->rq_oi.oi_cb_up = cb_update_punch;
1372
1373                 req->rq_oi.oi_policy.l_extent.start = rs;
1374                 req->rq_oi.oi_policy.l_extent.end = re;
1375                 req->rq_oi.oi_policy.l_extent.gid = -1;
1376
1377                 req->rq_oi.oi_capa = oinfo->oi_capa;
1378
1379                 lov_set_add_req(req, set);
1380         }
1381         if (!set->set_count)
1382                 GOTO(out_set, rc = -EIO);
1383         *reqset = set;
1384         RETURN(rc);
1385 out_set:
1386         lov_fini_punch_set(set);
1387         RETURN(rc);
1388 }
1389
1390 int lov_fini_sync_set(struct lov_request_set *set)
1391 {
1392         int rc = 0;
1393         ENTRY;
1394
1395         if (set == NULL)
1396                 RETURN(0);
1397         LASSERT(set->set_exp);
1398         if (cfs_atomic_read(&set->set_completes)) {
1399                 if (!cfs_atomic_read(&set->set_success))
1400                         rc = -EIO;
1401                 /* FIXME update qos data here */
1402         }
1403
1404         lov_put_reqset(set);
1405
1406         RETURN(rc);
1407 }
1408
1409 /* The callback for osc_sync that finilizes a request info when a
1410  * response is recieved. */
1411 static int cb_sync_update(void *cookie, int rc)
1412 {
1413         struct obd_info *oinfo = cookie;
1414         struct lov_request *lovreq;
1415
1416         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1417         return lov_update_common_set(lovreq->rq_rqset, lovreq, rc);
1418 }
1419
1420 int lov_prep_sync_set(struct obd_export *exp, struct obd_info *oinfo,
1421                       obd_off start, obd_off end,
1422                       struct lov_request_set **reqset)
1423 {
1424         struct lov_request_set *set;
1425         struct lov_obd *lov = &exp->exp_obd->u.lov;
1426         int rc = 0, i;
1427         ENTRY;
1428
1429         OBD_ALLOC_PTR(set);
1430         if (set == NULL)
1431                 RETURN(-ENOMEM);
1432         lov_init_set(set);
1433
1434         set->set_exp = exp;
1435         set->set_oi = oinfo;
1436
1437         for (i = 0; i < oinfo->oi_md->lsm_stripe_count; i++) {
1438                 struct lov_oinfo *loi = oinfo->oi_md->lsm_oinfo[i];
1439                 struct lov_request *req;
1440                 obd_off rs, re;
1441
1442                 if (!lov->lov_tgts[loi->loi_ost_idx] ||
1443                     !lov->lov_tgts[loi->loi_ost_idx]->ltd_active) {
1444                         CDEBUG(D_HA, "lov idx %d inactive\n", loi->loi_ost_idx);
1445                         continue;
1446                 }
1447
1448                 if (!lov_stripe_intersects(oinfo->oi_md, i, start, end, &rs,
1449                                            &re))
1450                         continue;
1451
1452                 OBD_ALLOC_PTR(req);
1453                 if (req == NULL)
1454                         GOTO(out_set, rc = -ENOMEM);
1455                 req->rq_stripe = i;
1456                 req->rq_idx = loi->loi_ost_idx;
1457
1458                 OBDO_ALLOC(req->rq_oi.oi_oa);
1459                 if (req->rq_oi.oi_oa == NULL) {
1460                         OBD_FREE(req, sizeof(*req));
1461                         GOTO(out_set, rc = -ENOMEM);
1462                 }
1463                 *req->rq_oi.oi_oa = *oinfo->oi_oa;
1464                 req->rq_oi.oi_oa->o_id = loi->loi_id;
1465                 req->rq_oi.oi_oa->o_seq = loi->loi_seq;
1466                 req->rq_oi.oi_oa->o_stripe_idx = i;
1467
1468                 req->rq_oi.oi_policy.l_extent.start = rs;
1469                 req->rq_oi.oi_policy.l_extent.end = re;
1470                 req->rq_oi.oi_policy.l_extent.gid = -1;
1471                 req->rq_oi.oi_cb_up = cb_sync_update;
1472
1473                 lov_set_add_req(req, set);
1474         }
1475         if (!set->set_count)
1476                 GOTO(out_set, rc = -EIO);
1477         *reqset = set;
1478         RETURN(rc);
1479 out_set:
1480         lov_fini_sync_set(set);
1481         RETURN(rc);
1482 }
1483
1484 #define LOV_U64_MAX ((__u64)~0ULL)
1485 #define LOV_SUM_MAX(tot, add)                                           \
1486         do {                                                            \
1487                 if ((tot) + (add) < (tot))                              \
1488                         (tot) = LOV_U64_MAX;                            \
1489                 else                                                    \
1490                         (tot) += (add);                                 \
1491         } while(0)
1492
1493 int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs,int success)
1494 {
1495         ENTRY;
1496
1497         if (success) {
1498                 __u32 expected_stripes = lov_get_stripecnt(&obd->u.lov, 0);
1499
1500                 if (osfs->os_files != LOV_U64_MAX)
1501                         do_div(osfs->os_files, expected_stripes);
1502                 if (osfs->os_ffree != LOV_U64_MAX)
1503                         do_div(osfs->os_ffree, expected_stripes);
1504
1505                 cfs_spin_lock(&obd->obd_osfs_lock);
1506                 memcpy(&obd->obd_osfs, osfs, sizeof(*osfs));
1507                 obd->obd_osfs_age = cfs_time_current_64();
1508                 cfs_spin_unlock(&obd->obd_osfs_lock);
1509                 RETURN(0);
1510         }
1511
1512         RETURN(-EIO);
1513 }
1514
1515 int lov_fini_statfs_set(struct lov_request_set *set)
1516 {
1517         int rc = 0;
1518         ENTRY;
1519
1520         if (set == NULL)
1521                 RETURN(0);
1522
1523         if (cfs_atomic_read(&set->set_completes)) {
1524                 rc = lov_fini_statfs(set->set_obd, set->set_oi->oi_osfs,
1525                                      cfs_atomic_read(&set->set_success));
1526         }
1527         lov_put_reqset(set);
1528         RETURN(rc);
1529 }
1530
1531 void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs,
1532                        int success)
1533 {
1534         int shift = 0, quit = 0;
1535         __u64 tmp;
1536
1537         if (success == 0) {
1538                 memcpy(osfs, lov_sfs, sizeof(*lov_sfs));
1539         } else {
1540                 if (osfs->os_bsize != lov_sfs->os_bsize) {
1541                         /* assume all block sizes are always powers of 2 */
1542                         /* get the bits difference */
1543                         tmp = osfs->os_bsize | lov_sfs->os_bsize;
1544                         for (shift = 0; shift <= 64; ++shift) {
1545                                 if (tmp & 1) {
1546                                         if (quit)
1547                                                 break;
1548                                         else
1549                                                 quit = 1;
1550                                         shift = 0;
1551                                 }
1552                                 tmp >>= 1;
1553                         }
1554                 }
1555
1556                 if (osfs->os_bsize < lov_sfs->os_bsize) {
1557                         osfs->os_bsize = lov_sfs->os_bsize;
1558
1559                         osfs->os_bfree  >>= shift;
1560                         osfs->os_bavail >>= shift;
1561                         osfs->os_blocks >>= shift;
1562                 } else if (shift != 0) {
1563                         lov_sfs->os_bfree  >>= shift;
1564                         lov_sfs->os_bavail >>= shift;
1565                         lov_sfs->os_blocks >>= shift;
1566                 }
1567 #ifdef MIN_DF
1568                 /* Sandia requested that df (and so, statfs) only
1569                    returned minimal available space on
1570                    a single OST, so people would be able to
1571                    write this much data guaranteed. */
1572                 if (osfs->os_bavail > lov_sfs->os_bavail) {
1573                         /* Presumably if new bavail is smaller,
1574                            new bfree is bigger as well */
1575                         osfs->os_bfree = lov_sfs->os_bfree;
1576                         osfs->os_bavail = lov_sfs->os_bavail;
1577                 }
1578 #else
1579                 osfs->os_bfree += lov_sfs->os_bfree;
1580                 osfs->os_bavail += lov_sfs->os_bavail;
1581 #endif
1582                 osfs->os_blocks += lov_sfs->os_blocks;
1583                 /* XXX not sure about this one - depends on policy.
1584                  *   - could be minimum if we always stripe on all OBDs
1585                  *     (but that would be wrong for any other policy,
1586                  *     if one of the OBDs has no more objects left)
1587                  *   - could be sum if we stripe whole objects
1588                  *   - could be average, just to give a nice number
1589                  *
1590                  * To give a "reasonable" (if not wholly accurate)
1591                  * number, we divide the total number of free objects
1592                  * by expected stripe count (watch out for overflow).
1593                  */
1594                 LOV_SUM_MAX(osfs->os_files, lov_sfs->os_files);
1595                 LOV_SUM_MAX(osfs->os_ffree, lov_sfs->os_ffree);
1596         }
1597 }
1598
1599 /* The callback for osc_statfs_async that finilizes a request info when a
1600  * response is received. */
1601 static int cb_statfs_update(void *cookie, int rc)
1602 {
1603         struct obd_info *oinfo = cookie;
1604         struct lov_request *lovreq;
1605         struct lov_request_set *set;
1606         struct obd_statfs *osfs, *lov_sfs;
1607         struct lov_obd *lov;
1608         struct lov_tgt_desc *tgt;
1609         struct obd_device *lovobd, *tgtobd;
1610         int success;
1611         ENTRY;
1612
1613         lovreq = container_of(oinfo, struct lov_request, rq_oi);
1614         set = lovreq->rq_rqset;
1615         lovobd = set->set_obd;
1616         lov = &lovobd->u.lov;
1617         osfs = set->set_oi->oi_osfs;
1618         lov_sfs = oinfo->oi_osfs;
1619         success = cfs_atomic_read(&set->set_success);
1620         /* XXX: the same is done in lov_update_common_set, however
1621            lovset->set_exp is not initialized. */
1622         lov_update_set(set, lovreq, rc);
1623         if (rc)
1624                 GOTO(out, rc);
1625
1626         obd_getref(lovobd);
1627         tgt = lov->lov_tgts[lovreq->rq_idx];
1628         if (!tgt || !tgt->ltd_active)
1629                 GOTO(out_update, rc);
1630
1631         tgtobd = class_exp2obd(tgt->ltd_exp);
1632         cfs_spin_lock(&tgtobd->obd_osfs_lock);
1633         memcpy(&tgtobd->obd_osfs, lov_sfs, sizeof(*lov_sfs));
1634         if ((oinfo->oi_flags & OBD_STATFS_FROM_CACHE) == 0)
1635                 tgtobd->obd_osfs_age = cfs_time_current_64();
1636         cfs_spin_unlock(&tgtobd->obd_osfs_lock);
1637
1638 out_update:
1639         lov_update_statfs(osfs, lov_sfs, success);
1640         qos_update(lov);
1641         obd_putref(lovobd);
1642
1643 out:
1644         if (set->set_oi->oi_flags & OBD_STATFS_PTLRPCD &&
1645             lov_finished_set(set)) {
1646                 lov_statfs_interpret(NULL, set, set->set_count !=
1647                                      cfs_atomic_read(&set->set_success));
1648                 if (lov->lov_qos.lq_statfs_in_progress)
1649                         qos_statfs_done(lov);
1650         }
1651
1652         RETURN(0);
1653 }
1654
1655 int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo,
1656                         struct lov_request_set **reqset)
1657 {
1658         struct lov_request_set *set;
1659         struct lov_obd *lov = &obd->u.lov;
1660         int rc = 0, i;
1661         ENTRY;
1662
1663         OBD_ALLOC(set, sizeof(*set));
1664         if (set == NULL)
1665                 RETURN(-ENOMEM);
1666         lov_init_set(set);
1667
1668         set->set_obd = obd;
1669         set->set_oi = oinfo;
1670
1671         /* We only get block data from the OBD */
1672         for (i = 0; i < lov->desc.ld_tgt_count; i++) {
1673                 struct lov_request *req;
1674
1675                 if (!lov->lov_tgts[i] || (!lov->lov_tgts[i]->ltd_active
1676                                           && (oinfo->oi_flags & OBD_STATFS_NODELAY))) {
1677                         CDEBUG(D_HA, "lov idx %d inactive\n", i);
1678                         continue;
1679                 }
1680
1681                 /* skip targets that have been explicitely disabled by the
1682                  * administrator */
1683                 if (!lov->lov_tgts[i]->ltd_exp) {
1684                         CDEBUG(D_HA, "lov idx %d administratively disabled\n", i);
1685                         continue;
1686                 }
1687
1688                 OBD_ALLOC(req, sizeof(*req));
1689                 if (req == NULL)
1690                         GOTO(out_set, rc = -ENOMEM);
1691
1692                 OBD_ALLOC(req->rq_oi.oi_osfs, sizeof(*req->rq_oi.oi_osfs));
1693                 if (req->rq_oi.oi_osfs == NULL) {
1694                         OBD_FREE(req, sizeof(*req));
1695                         GOTO(out_set, rc = -ENOMEM);
1696                 }
1697
1698                 req->rq_idx = i;
1699                 req->rq_oi.oi_cb_up = cb_statfs_update;
1700                 req->rq_oi.oi_flags = oinfo->oi_flags;
1701
1702                 lov_set_add_req(req, set);
1703         }
1704         if (!set->set_count)
1705                 GOTO(out_set, rc = -EIO);
1706         *reqset = set;
1707         RETURN(rc);
1708 out_set:
1709         lov_fini_statfs_set(set);
1710         RETURN(rc);
1711 }