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