lustre/ost/ost_handler.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2013, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/ost/ost_handler.c
  37  *
  38  * Author: Peter J. Braam <braam@clusterfs.com>
  39  * Author: Phil Schwan <phil@clusterfs.com>
  40  */
  41
  42 #define DEBUG_SUBSYSTEM S_OST
  43
  44 #include <linux/module.h>
  45 #include <obd_cksum.h>
  46 #include <obd_ost.h>
  47 #include <lustre_net.h>
  48 #include <lustre_dlm.h>
  49 #include <lustre_export.h>
  50 #include <lustre_debug.h>
  51 #include <lustre_fid.h>
  52 #include <lustre_fld.h>
  53 #include <linux/init.h>
  54 #include <lprocfs_status.h>
  55 #include <libcfs/list.h>
  56 #include <lustre_quota.h>
  57 #include <lustre_fid.h>
  58 #include "ost_internal.h"
  59 #include <lustre_fid.h>
  60
  61 static int oss_num_threads;
  62 CFS_MODULE_PARM(oss_num_threads, "i", int, 0444,
  63                 "number of OSS service threads to start");
  64
  65 static int ost_num_threads;
  66 CFS_MODULE_PARM(ost_num_threads, "i", int, 0444,
  67                 "number of OST service threads to start (deprecated)");
  68
  69 static int oss_num_create_threads;
  70 CFS_MODULE_PARM(oss_num_create_threads, "i", int, 0444,
  71                 "number of OSS create threads to start");
  72
  73 static char *oss_cpts;
  74 CFS_MODULE_PARM(oss_cpts, "s", charp, 0444,
  75                 "CPU partitions OSS threads should run on");
  76
  77 static char *oss_io_cpts;
  78 CFS_MODULE_PARM(oss_io_cpts, "s", charp, 0444,
  79                 "CPU partitions OSS IO threads should run on");
  80
  81 /*
  82  * this page is allocated statically when module is initializing
  83  * it is used to simulate data corruptions, see ost_checksum_bulk()
  84  * for details. as the original pages provided by the layers below
  85  * can be remain in the internal cache, we do not want to modify
  86  * them.
  87  */
  88 static struct page *ost_page_to_corrupt = NULL;
  89
  90 /**
  91  * Do not return server-side uid/gid to remote client
  92  */
  93 static void ost_drop_id(struct obd_export *exp, struct obdo *oa)
  94 {
  95         if (exp_connect_rmtclient(exp)) {
  96                 oa->o_uid = -1;
  97                 oa->o_gid = -1;
  98                 oa->o_valid &= ~(OBD_MD_FLUID | OBD_MD_FLGID);
  99         }
 100 }
 101
 102 /**
 103  * Validate oa from client.
 104  * If the request comes from 2.0 clients, currently only RSVD seq and IDIF
 105  * req are valid.
 106  *    a. objects in Single MDT FS  seq = FID_SEQ_OST_MDT0, oi_id != 0
 107  *    b. Echo objects(seq = 2), old echo client still use oi_id/oi_seq to
 108  *       pack ost_id. Because non-zero oi_seq will make it diffcult to tell
 109  *       whether this is oi_fid or real ostid. So it will check
 110  *       OBD_CONNECT_FID, then convert the ostid to FID for old client.
 111  *    c. Old FID-disable osc will send IDIF.
 112  *    d. new FID-enable osc/osp will send normal FID.
 113  *
 114  * And also oi_id/f_oid should always start from 1. oi_id/f_oid = 0 will
 115  * be used for LAST_ID file, and only being accessed inside OST now.
 116  */
 117 static int ost_validate_obdo(struct obd_export *exp, struct obdo *oa,
 118                              struct obd_ioobj *ioobj)
 119 {
 120         int rc = 0;
 121
 122         if (unlikely(!(exp_connect_flags(exp) & OBD_CONNECT_FID) &&
 123                      fid_seq_is_echo(oa->o_oi.oi.oi_seq) && oa != NULL)) {
 124                 /* Sigh 2.[123] client still sends echo req with oi_id = 0
 125                  * during create, and we will reset this to 1, since this
 126                  * oi_id is basically useless in the following create process,
 127                  * but oi_id == 0 will make it difficult to tell whether it is
 128                  * real FID or ost_id. */
 129                 oa->o_oi.oi_fid.f_oid = oa->o_oi.oi.oi_id ?: 1;
 130                 oa->o_oi.oi_fid.f_seq = FID_SEQ_ECHO;
 131                 oa->o_oi.oi_fid.f_ver = 0;
 132         } else {
 133                 if (unlikely((oa == NULL) || ostid_id(&oa->o_oi) == 0))
 134                         GOTO(out, rc = -EPROTO);
 135
 136                 /* Note: this check might be forced in 2.5 or 2.6, i.e.
 137                  * all of the requests are required to setup FLGROUP */
 138                 if (unlikely(!(oa->o_valid & OBD_MD_FLGROUP))) {
 139                         ostid_set_seq_mdt0(&oa->o_oi);
 140                         if (ioobj)
 141                                 ostid_set_seq_mdt0(&ioobj->ioo_oid);
 142                         oa->o_valid |= OBD_MD_FLGROUP;
 143                 }
 144
 145                 if (unlikely(!(fid_seq_is_idif(ostid_seq(&oa->o_oi)) ||
 146                                fid_seq_is_mdt0(ostid_seq(&oa->o_oi)) ||
 147                                fid_seq_is_norm(ostid_seq(&oa->o_oi)) ||
 148                                fid_seq_is_echo(ostid_seq(&oa->o_oi)))))
 149                         GOTO(out, rc = -EPROTO);
 150         }
 151
 152         if (ioobj != NULL) {
 153                 unsigned max_brw = ioobj_max_brw_get(ioobj);
 154
 155                 if (unlikely((max_brw & (max_brw - 1)) != 0)) {
 156                         CERROR("%s: client %s sent bad ioobj max %u for "DOSTID
 157                                ": rc = -EPROTO\n", exp->exp_obd->obd_name,
 158                                obd_export_nid2str(exp), max_brw,
 159                                POSTID(&oa->o_oi));
 160                         GOTO(out, rc = -EPROTO);
 161                 }
 162                 ioobj->ioo_oid = oa->o_oi;
 163         }
 164
 165 out:
 166         if (rc != 0)
 167                 CERROR("%s: client %s sent bad object "DOSTID": rc = %d\n",
 168                        exp->exp_obd->obd_name, obd_export_nid2str(exp),
 169                        oa ? ostid_seq(&oa->o_oi) : -1,
 170                        oa ? ostid_id(&oa->o_oi) : -1, rc);
 171         return rc;
 172 }
 173
 174 void oti_to_request(struct obd_trans_info *oti, struct ptlrpc_request *req)
 175 {
 176         struct oti_req_ack_lock *ack_lock;
 177         int i;
 178
 179         if (oti == NULL)
 180                 return;
 181
 182         if (req->rq_repmsg) {
 183                 __u64 versions[PTLRPC_NUM_VERSIONS] = { 0 };
 184                 lustre_msg_set_transno(req->rq_repmsg, oti->oti_transno);
 185                 versions[0] = oti->oti_pre_version;
 186                 lustre_msg_set_versions(req->rq_repmsg, versions);
 187         }
 188         req->rq_transno = oti->oti_transno;
 189
 190         /* XXX 4 == entries in oti_ack_locks??? */
 191         for (ack_lock = oti->oti_ack_locks, i = 0; i < 4; i++, ack_lock++) {
 192                 if (!ack_lock->mode)
 193                         break;
 194                 /* XXX not even calling target_send_reply in some cases... */
 195                 ptlrpc_save_lock (req, &ack_lock->lock, ack_lock->mode, 0);
 196         }
 197 }
 198
 199 static int ost_destroy(struct obd_export *exp, struct ptlrpc_request *req,
 200                        struct obd_trans_info *oti)
 201 {
 202         struct ost_body *body, *repbody;
 203         struct lustre_capa *capa = NULL;
 204         int rc;
 205         ENTRY;
 206
 207         /* Get the request body */
 208         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
 209         if (body == NULL)
 210                 RETURN(-EFAULT);
 211
 212         if (ostid_id(&body->oa.o_oi) == 0)
 213                 RETURN(-EPROTO);
 214
 215         rc = ost_validate_obdo(exp, &body->oa, NULL);
 216         if (rc)
 217                 RETURN(rc);
 218
 219         /* If there's a DLM request, cancel the locks mentioned in it*/
 220         if (req_capsule_field_present(&req->rq_pill, &RMF_DLM_REQ, RCL_CLIENT)) {
 221                 struct ldlm_request *dlm;
 222
 223                 dlm = req_capsule_client_get(&req->rq_pill, &RMF_DLM_REQ);
 224                 if (dlm == NULL)
 225                         RETURN (-EFAULT);
 226                 ldlm_request_cancel(req, dlm, 0);
 227         }
 228
 229         /* If there's a capability, get it */
 230         if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
 231                 capa = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
 232                 if (capa == NULL) {
 233                         CERROR("Missing capability for OST DESTROY");
 234                         RETURN (-EFAULT);
 235                 }
 236         }
 237
 238         /* Prepare the reply */
 239         rc = req_capsule_server_pack(&req->rq_pill);
 240         if (rc)
 241                 RETURN(rc);
 242
 243         /* Get the log cancellation cookie */
 244         if (body->oa.o_valid & OBD_MD_FLCOOKIE)
 245                 oti->oti_logcookies = &body->oa.o_lcookie;
 246
 247         /* Finish the reply */
 248         repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
 249         memcpy(&repbody->oa, &body->oa, sizeof(body->oa));
 250
 251         /* Do the destroy and set the reply status accordingly  */
 252         req->rq_status = obd_destroy(req->rq_svc_thread->t_env, exp,
 253                                      &repbody->oa, NULL, oti, NULL, capa);
 254         RETURN(0);
 255 }
 256
 257 /**
 258  * Helper function for getting server side [start, start+count] DLM lock
 259  * if asked by client.
 260  */
 261 static int ost_lock_get(struct obd_export *exp, struct obdo *oa,
 262                         __u64 start, __u64 count, struct lustre_handle *lh,
 263                         int mode, __u64 flags)
 264 {
 265         struct ldlm_res_id res_id;
 266         ldlm_policy_data_t policy;
 267         __u64 end = start + count;
 268
 269         ENTRY;
 270
 271         LASSERT(!lustre_handle_is_used(lh));
 272         /* o_id and o_gr are used for localizing resource, if client miss to set
 273          * them, do not trigger ASSERTION. */
 274         if (unlikely((oa->o_valid & (OBD_MD_FLID | OBD_MD_FLGROUP)) !=
 275                      (OBD_MD_FLID | OBD_MD_FLGROUP)))
 276                 RETURN(-EPROTO);
 277
 278         if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
 279             !(oa->o_flags & OBD_FL_SRVLOCK))
 280                 RETURN(0);
 281
 282         if (mode == LCK_MINMODE)
 283                 RETURN(0);
 284
 285         ostid_build_res_name(&oa->o_oi, &res_id);
 286         CDEBUG(D_INODE, "OST-side extent lock.\n");
 287
 288         policy.l_extent.start = start & CFS_PAGE_MASK;
 289
 290         /* If ->o_blocks is EOF it means "lock till the end of the
 291          * file". Otherwise, it's size of a hole being punched (in bytes) */
 292         if (count == OBD_OBJECT_EOF || end < start)
 293                 policy.l_extent.end = OBD_OBJECT_EOF;
 294         else
 295                 policy.l_extent.end = end | ~CFS_PAGE_MASK;
 296
 297         RETURN(ldlm_cli_enqueue_local(exp->exp_obd->obd_namespace, &res_id,
 298                                       LDLM_EXTENT, &policy, mode, &flags,
 299                                       ldlm_blocking_ast, ldlm_completion_ast,
 300                                       ldlm_glimpse_ast, NULL, 0, LVB_T_NONE,
 301                                       NULL, lh));
 302 }
 303
 304 /* Helper function: release lock, if any. */
 305 static void ost_lock_put(struct obd_export *exp,
 306                          struct lustre_handle *lh, int mode)
 307 {
 308         ENTRY;
 309         if (lustre_handle_is_used(lh))
 310                 ldlm_lock_decref(lh, mode);
 311         EXIT;
 312 }
 313
 314 static int ost_getattr(struct obd_export *exp, struct ptlrpc_request *req)
 315 {
 316         struct ost_body *body, *repbody;
 317         struct obd_info *oinfo;
 318         struct lustre_handle lh = { 0 };
 319         struct lustre_capa *capa = NULL;
 320         ldlm_mode_t lock_mode;
 321         int rc;
 322         ENTRY;
 323
 324         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
 325         if (body == NULL)
 326                 RETURN(-EFAULT);
 327
 328         rc = ost_validate_obdo(exp, &body->oa, NULL);
 329         if (rc)
 330                 RETURN(rc);
 331
 332         if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
 333                 capa = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
 334                 if (capa == NULL) {
 335                         CERROR("Missing capability for OST GETATTR");
 336                         RETURN(-EFAULT);
 337                 }
 338         }
 339
 340         rc = req_capsule_server_pack(&req->rq_pill);
 341         if (rc)
 342                 RETURN(rc);
 343
 344         repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
 345         repbody->oa = body->oa;
 346
 347         lock_mode = LCK_MINMODE;
 348         if (body->oa.o_valid & OBD_MD_FLFLAGS &&
 349             body->oa.o_flags & OBD_FL_SRVLOCK) {
 350                 lock_mode = LCK_PR;
 351                 if (body->oa.o_flags & OBD_FL_FLUSH)
 352                         lock_mode = LCK_PW;
 353         }
 354         rc = ost_lock_get(exp, &repbody->oa, 0, OBD_OBJECT_EOF, &lh,
 355                           lock_mode, 0);
 356         if (rc)
 357                 RETURN(rc);
 358
 359         OBD_ALLOC_PTR(oinfo);
 360         if (!oinfo)
 361                 GOTO(unlock, rc = -ENOMEM);
 362         oinfo->oi_oa = &repbody->oa;
 363         oinfo->oi_capa = capa;
 364
 365         req->rq_status = obd_getattr(req->rq_svc_thread->t_env, exp, oinfo);
 366
 367         OBD_FREE_PTR(oinfo);
 368
 369         ost_drop_id(exp, &repbody->oa);
 370
 371         if (!(repbody->oa.o_valid & OBD_MD_FLFLAGS)) {
 372                 repbody->oa.o_valid |= OBD_MD_FLFLAGS;
 373                 repbody->oa.o_flags = 0;
 374         }
 375         repbody->oa.o_flags |= OBD_FL_FLUSH;
 376
 377 unlock:
 378         ost_lock_put(exp, &lh, lock_mode);
 379         RETURN(rc);
 380 }
 381
 382 static int ost_statfs(struct ptlrpc_request *req)
 383 {
 384         struct obd_statfs *osfs;
 385         int rc;
 386         ENTRY;
 387
 388         rc = req_capsule_server_pack(&req->rq_pill);
 389         if (rc)
 390                 RETURN(rc);
 391
 392         osfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
 393
 394         req->rq_status = obd_statfs(req->rq_svc_thread->t_env, req->rq_export,
 395                                     osfs,
 396                                     cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
 397                                     0);
 398         if (req->rq_status != 0)
 399                 CERROR("ost: statfs failed: rc %d\n", req->rq_status);
 400
 401         if (OBD_FAIL_CHECK(OBD_FAIL_OST_STATFS_EINPROGRESS))
 402                 req->rq_status = -EINPROGRESS;
 403
 404         RETURN(0);
 405 }
 406
 407 static int ost_create(struct obd_export *exp, struct ptlrpc_request *req,
 408                       struct obd_trans_info *oti)
 409 {
 410         struct ost_body *body, *repbody;
 411         int rc;
 412         ENTRY;
 413
 414         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
 415         if (body == NULL)
 416                 RETURN(-EFAULT);
 417
 418         rc = ost_validate_obdo(req->rq_export, &body->oa, NULL);
 419         if (rc)
 420                 RETURN(rc);
 421
 422         rc = req_capsule_server_pack(&req->rq_pill);
 423         if (rc)
 424                 RETURN(rc);
 425
 426         repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
 427         repbody->oa = body->oa;
 428         oti->oti_logcookies = &body->oa.o_lcookie;
 429
 430         req->rq_status = obd_create(req->rq_svc_thread->t_env, exp,
 431                                     &repbody->oa, NULL, oti);
 432         //obd_log_cancel(conn, NULL, 1, oti->oti_logcookies, 0);
 433         RETURN(0);
 434 }
 435
 436 static int ost_punch(struct obd_export *exp, struct ptlrpc_request *req,
 437                      struct obd_trans_info *oti)
 438 {
 439         struct ost_body *body, *repbody;
 440         __u64 flags = 0;
 441         struct lustre_handle lh = {0,};
 442         int rc;
 443         ENTRY;
 444
 445         /* check that we do support OBD_CONNECT_TRUNCLOCK. */
 446         CLASSERT(OST_CONNECT_SUPPORTED & OBD_CONNECT_TRUNCLOCK);
 447
 448         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
 449         if (body == NULL)
 450                 RETURN(-EFAULT);
 451
 452         rc = ost_validate_obdo(exp, &body->oa, NULL);
 453         if (rc)
 454                 RETURN(rc);
 455
 456         if ((body->oa.o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
 457             (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
 458                 RETURN(-EPROTO);
 459
 460         rc = req_capsule_server_pack(&req->rq_pill);
 461         if (rc)
 462                 RETURN(rc);
 463
 464         /* standard truncate optimization: if file body is completely
 465          * destroyed, don't send data back to the server. */
 466         if (body->oa.o_size == 0)
 467                 flags |= LDLM_FL_AST_DISCARD_DATA;
 468
 469         repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
 470         repbody->oa = body->oa;
 471
 472         rc = ost_lock_get(exp, &repbody->oa, repbody->oa.o_size,
 473                           repbody->oa.o_blocks, &lh, LCK_PW, flags);
 474         if (rc == 0) {
 475                 struct obd_info *oinfo;
 476                 struct lustre_capa *capa = NULL;
 477
 478                 if (repbody->oa.o_valid & OBD_MD_FLFLAGS &&
 479                     repbody->oa.o_flags == OBD_FL_SRVLOCK)
 480                         /*
 481                          * If OBD_FL_SRVLOCK is the only bit set in
 482                          * ->o_flags, clear OBD_MD_FLFLAGS to avoid falling
 483                          * through filter_setattr() to filter_iocontrol().
 484                          */
 485                         repbody->oa.o_valid &= ~OBD_MD_FLFLAGS;
 486
 487                 if (repbody->oa.o_valid & OBD_MD_FLOSSCAPA) {
 488                         capa = req_capsule_client_get(&req->rq_pill,
 489                                                       &RMF_CAPA1);
 490                         if (capa == NULL) {
 491                                 CERROR("Missing capability for OST PUNCH");
 492                                 GOTO(unlock, rc = -EFAULT);
 493                         }
 494                 }
 495
 496                 OBD_ALLOC_PTR(oinfo);
 497                 if (!oinfo)
 498                         GOTO(unlock, rc = -ENOMEM);
 499                 oinfo->oi_oa = &repbody->oa;
 500                 oinfo->oi_policy.l_extent.start = oinfo->oi_oa->o_size;
 501                 oinfo->oi_policy.l_extent.end = oinfo->oi_oa->o_blocks;
 502                 oinfo->oi_capa = capa;
 503                 oinfo->oi_flags = OBD_FL_PUNCH;
 504
 505                 req->rq_status = obd_punch(req->rq_svc_thread->t_env, exp,
 506                                            oinfo, oti, NULL);
 507                 OBD_FREE_PTR(oinfo);
 508 unlock:
 509                 ost_lock_put(exp, &lh, LCK_PW);
 510         }
 511
 512         ost_drop_id(exp, &repbody->oa);
 513         RETURN(rc);
 514 }
 515
 516 static int ost_sync(struct obd_export *exp, struct ptlrpc_request *req,
 517                     struct obd_trans_info *oti)
 518 {
 519         struct ost_body *body, *repbody;
 520         struct obd_info *oinfo;
 521         struct lustre_capa *capa = NULL;
 522         int rc;
 523         ENTRY;
 524
 525         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
 526         if (body == NULL)
 527                 RETURN(-EFAULT);
 528
 529         rc = ost_validate_obdo(exp, &body->oa, NULL);
 530         if (rc)
 531                 RETURN(rc);
 532
 533         if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
 534                 capa = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
 535                 if (capa == NULL) {
 536                         CERROR("Missing capability for OST SYNC");
 537                         RETURN (-EFAULT);
 538                 }
 539         }
 540
 541         rc = req_capsule_server_pack(&req->rq_pill);
 542         if (rc)
 543                 RETURN(rc);
 544
 545         repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
 546         repbody->oa = body->oa;
 547
 548         OBD_ALLOC_PTR(oinfo);
 549         if (!oinfo)
 550                 RETURN(-ENOMEM);
 551
 552         oinfo->oi_oa = &repbody->oa;
 553         oinfo->oi_capa = capa;
 554         oinfo->oi_jobid = oti->oti_jobid;
 555         req->rq_status = obd_sync(req->rq_svc_thread->t_env, exp, oinfo,
 556                                   repbody->oa.o_size, repbody->oa.o_blocks,
 557                                   NULL);
 558         OBD_FREE_PTR(oinfo);
 559
 560         ost_drop_id(exp, &repbody->oa);
 561         RETURN(0);
 562 }
 563
 564 static int ost_setattr(struct obd_export *exp, struct ptlrpc_request *req,
 565                        struct obd_trans_info *oti)
 566 {
 567         struct ost_body *body, *repbody;
 568         struct obd_info *oinfo;
 569         struct lustre_capa *capa = NULL;
 570         int rc;
 571         ENTRY;
 572
 573         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
 574         if (body == NULL)
 575                 RETURN(-EFAULT);
 576
 577         rc = ost_validate_obdo(req->rq_export, &body->oa, NULL);
 578         if (rc)
 579                 RETURN(rc);
 580
 581         rc = req_capsule_server_pack(&req->rq_pill);
 582         if (rc)
 583                 RETURN(rc);
 584
 585         if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
 586                 capa = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
 587                 if (capa == NULL) {
 588                         CERROR("Missing capability for OST SETATTR");
 589                         RETURN (-EFAULT);
 590                 }
 591         }
 592
 593         repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
 594         repbody->oa = body->oa;
 595
 596         OBD_ALLOC_PTR(oinfo);
 597         if (!oinfo)
 598                 RETURN(-ENOMEM);
 599         oinfo->oi_oa = &repbody->oa;
 600         oinfo->oi_capa = capa;
 601
 602         req->rq_status = obd_setattr(req->rq_svc_thread->t_env, exp, oinfo,
 603                                      oti);
 604
 605         OBD_FREE_PTR(oinfo);
 606
 607         ost_drop_id(exp, &repbody->oa);
 608         RETURN(0);
 609 }
 610
 611 static __u32 ost_checksum_bulk(struct ptlrpc_bulk_desc *desc, int opc,
 612                                cksum_type_t cksum_type)
 613 {
 614         struct cfs_crypto_hash_desc     *hdesc;
 615         unsigned int                    bufsize;
 616         int                             i, err;
 617         unsigned char                   cfs_alg = cksum_obd2cfs(cksum_type);
 618         __u32                           cksum;
 619
 620         hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
 621         if (IS_ERR(hdesc)) {
 622                 CERROR("Unable to initialize checksum hash %s\n",
 623                        cfs_crypto_hash_name(cfs_alg));
 624                 return PTR_ERR(hdesc);
 625         }
 626         CDEBUG(D_INFO, "Checksum for algo %s\n", cfs_crypto_hash_name(cfs_alg));
 627         for (i = 0; i < desc->bd_iov_count; i++) {
 628
 629                 /* corrupt the data before we compute the checksum, to
 630                  * simulate a client->OST data error */
 631                 if (i == 0 && opc == OST_WRITE &&
 632                     OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_RECEIVE)) {
 633                         int off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK;
 634                         int len = desc->bd_iov[i].kiov_len;
 635                         struct page *np = ost_page_to_corrupt;
 636                         char *ptr = kmap(desc->bd_iov[i].kiov_page) + off;
 637
 638                         if (np) {
 639                                 char *ptr2 = kmap(np) + off;
 640
 641                                 memcpy(ptr2, ptr, len);
 642                                 memcpy(ptr2, "bad3", min(4, len));
 643                                 kunmap(np);
 644                                 desc->bd_iov[i].kiov_page = np;
 645                         } else {
 646                                 CERROR("can't alloc page for corruption\n");
 647                         }
 648                 }
 649                 cfs_crypto_hash_update_page(hdesc, desc->bd_iov[i].kiov_page,
 650                                   desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK,
 651                                   desc->bd_iov[i].kiov_len);
 652
 653                  /* corrupt the data after we compute the checksum, to
 654                  * simulate an OST->client data error */
 655                 if (i == 0 && opc == OST_READ &&
 656                     OBD_FAIL_CHECK(OBD_FAIL_OST_CHECKSUM_SEND)) {
 657                         int off = desc->bd_iov[i].kiov_offset & ~CFS_PAGE_MASK;
 658                         int len = desc->bd_iov[i].kiov_len;
 659                         struct page *np = ost_page_to_corrupt;
 660                         char *ptr = kmap(desc->bd_iov[i].kiov_page) + off;
 661
 662                         if (np) {
 663                                 char *ptr2 = kmap(np) + off;
 664
 665                                 memcpy(ptr2, ptr, len);
 666                                 memcpy(ptr2, "bad4", min(4, len));
 667                                 kunmap(np);
 668                                 desc->bd_iov[i].kiov_page = np;
 669                         } else {
 670                                 CERROR("can't alloc page for corruption\n");
 671                         }
 672                 }
 673         }
 674
 675         bufsize = 4;
 676         err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
 677         if (err)
 678                 cfs_crypto_hash_final(hdesc, NULL, NULL);
 679
 680         return cksum;
 681 }
 682
 683 static int ost_brw_lock_get(int mode, struct obd_export *exp,
 684                             struct obd_ioobj *obj, struct niobuf_remote *nb,
 685                             struct lustre_handle *lh)
 686 {
 687         __u64 flags               = 0;
 688         int nrbufs                = obj->ioo_bufcnt;
 689         struct ldlm_res_id res_id;
 690         ldlm_policy_data_t policy;
 691         int i;
 692         ENTRY;
 693
 694         ostid_build_res_name(&obj->ioo_oid, &res_id);
 695         LASSERT(mode == LCK_PR || mode == LCK_PW);
 696         LASSERT(!lustre_handle_is_used(lh));
 697
 698         if (nrbufs == 0 || !(nb[0].flags & OBD_BRW_SRVLOCK))
 699                 RETURN(0);
 700
 701         for (i = 1; i < nrbufs; i ++)
 702                 if ((nb[0].flags & OBD_BRW_SRVLOCK) !=
 703                     (nb[i].flags & OBD_BRW_SRVLOCK))
 704                         RETURN(-EFAULT);
 705
 706         policy.l_extent.start = nb[0].offset & CFS_PAGE_MASK;
 707         policy.l_extent.end   = (nb[nrbufs - 1].offset +
 708                                  nb[nrbufs - 1].len - 1) | ~CFS_PAGE_MASK;
 709
 710         RETURN(ldlm_cli_enqueue_local(exp->exp_obd->obd_namespace, &res_id,
 711                                       LDLM_EXTENT, &policy, mode, &flags,
 712                                       ldlm_blocking_ast, ldlm_completion_ast,
 713                                       ldlm_glimpse_ast, NULL, 0, LVB_T_NONE,
 714                                       NULL, lh));
 715 }
 716
 717 static void ost_brw_lock_put(int mode,
 718                              struct obd_ioobj *obj, struct niobuf_remote *niob,
 719                              struct lustre_handle *lh)
 720 {
 721         ENTRY;
 722         LASSERT(mode == LCK_PR || mode == LCK_PW);
 723         LASSERT((obj->ioo_bufcnt > 0 && (niob[0].flags & OBD_BRW_SRVLOCK)) ==
 724                 lustre_handle_is_used(lh));
 725         if (lustre_handle_is_used(lh))
 726                 ldlm_lock_decref(lh, mode);
 727         EXIT;
 728 }
 729
 730 /* Allocate thread local buffers if needed */
 731 static struct ost_thread_local_cache *ost_tls_get(struct ptlrpc_request *r)
 732 {
 733         struct ost_thread_local_cache *tls =
 734                 (struct ost_thread_local_cache *)(r->rq_svc_thread->t_data);
 735
 736         /* In normal mode of operation an I/O request is serviced only
 737          * by ll_ost_io threads each of them has own tls buffers allocated by
 738          * ost_io_thread_init().
 739          * During recovery, an I/O request may be queued until any of the ost
 740          * service threads process it. Not necessary it should be one of
 741          * ll_ost_io threads. In that case we dynamically allocating tls
 742          * buffers for the request service time. */
 743         if (unlikely(tls == NULL)) {
 744                 LASSERT(r->rq_export->exp_in_recovery);
 745                 OBD_ALLOC_PTR(tls);
 746                 if (tls != NULL) {
 747                         tls->temporary = 1;
 748                         r->rq_svc_thread->t_data = tls;
 749                 }
 750         }
 751         return  tls;
 752 }
 753
 754 /* Free thread local buffers if they were allocated only for servicing
 755  * this one request */
 756 static void ost_tls_put(struct ptlrpc_request *r)
 757 {
 758         struct ost_thread_local_cache *tls =
 759                 (struct ost_thread_local_cache *)(r->rq_svc_thread->t_data);
 760
 761         if (unlikely(tls->temporary)) {
 762                 OBD_FREE_PTR(tls);
 763                 r->rq_svc_thread->t_data = NULL;
 764         }
 765 }
 766
 767 static int ost_brw_read(struct ptlrpc_request *req, struct obd_trans_info *oti)
 768 {
 769         struct ptlrpc_bulk_desc *desc = NULL;
 770         struct obd_export *exp = req->rq_export;
 771         struct niobuf_remote *remote_nb;
 772         struct niobuf_local *local_nb;
 773         struct obd_ioobj *ioo;
 774         struct ost_body *body, *repbody;
 775         struct lustre_capa *capa = NULL;
 776         struct l_wait_info lwi;
 777         struct lustre_handle lockh = { 0 };
 778         int niocount, npages, nob = 0, rc, i;
 779         int no_reply = 0;
 780         struct ost_thread_local_cache *tls;
 781         ENTRY;
 782
 783         req->rq_bulk_read = 1;
 784
 785         if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_READ_BULK))
 786                 GOTO(out, rc = -EIO);
 787
 788         OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, (obd_timeout + 1) / 4);
 789
 790         /* Check if there is eviction in progress, and if so, wait for it to
 791          * finish */
 792         if (unlikely(cfs_atomic_read(&exp->exp_obd->obd_evict_inprogress))) {
 793                 lwi = LWI_INTR(NULL, NULL); // We do not care how long it takes
 794                 rc = l_wait_event(exp->exp_obd->obd_evict_inprogress_waitq,
 795                         !cfs_atomic_read(&exp->exp_obd->obd_evict_inprogress),
 796                         &lwi);
 797         }
 798         if (exp->exp_failed)
 799                 GOTO(out, rc = -ENOTCONN);
 800
 801         /* ost_body, ioobj & noibuf_remote are verified and swabbed in
 802          * ost_rw_hpreq_check(). */
 803         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
 804         if (body == NULL)
 805                 GOTO(out, rc = -EFAULT);
 806
 807         /*
 808          * A req_capsule_X_get_array(pill, field, ptr_to_element_count) function
 809          * would be useful here and wherever we get &RMF_OBD_IOOBJ and
 810          * &RMF_NIOBUF_REMOTE.
 811          */
 812         ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
 813         if (ioo == NULL)
 814                 GOTO(out, rc = -EFAULT);
 815
 816         rc = ost_validate_obdo(exp, &body->oa, ioo);
 817         if (rc)
 818                 RETURN(rc);
 819
 820         niocount = ioo->ioo_bufcnt;
 821         remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
 822         if (remote_nb == NULL)
 823                 GOTO(out, rc = -EFAULT);
 824
 825         if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
 826                 capa = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
 827                 if (capa == NULL) {
 828                         CERROR("Missing capability for OST BRW READ");
 829                         GOTO(out, rc = -EFAULT);
 830                 }
 831         }
 832
 833         rc = req_capsule_server_pack(&req->rq_pill);
 834         if (rc)
 835                 GOTO(out, rc);
 836
 837         tls = ost_tls_get(req);
 838         if (tls == NULL)
 839                 GOTO(out_bulk, rc = -ENOMEM);
 840         local_nb = tls->local;
 841
 842         rc = ost_brw_lock_get(LCK_PR, exp, ioo, remote_nb, &lockh);
 843         if (rc != 0)
 844                 GOTO(out_tls, rc);
 845
 846         /*
 847          * If getting the lock took more time than
 848          * client was willing to wait, drop it. b=11330
 849          */
 850         if (cfs_time_current_sec() > req->rq_deadline ||
 851             OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
 852                 no_reply = 1;
 853                 CERROR("Dropping timed-out read from %s because locking"
 854                        "object "DOSTID" took %ld seconds (limit was %ld).\n",
 855                        libcfs_id2str(req->rq_peer), POSTID(&ioo->ioo_oid),
 856                        cfs_time_current_sec() - req->rq_arrival_time.tv_sec,
 857                        req->rq_deadline - req->rq_arrival_time.tv_sec);
 858                 GOTO(out_lock, rc = -ETIMEDOUT);
 859         }
 860
 861         repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
 862         memcpy(&repbody->oa, &body->oa, sizeof(repbody->oa));
 863
 864         npages = OST_THREAD_POOL_SIZE;
 865         rc = obd_preprw(req->rq_svc_thread->t_env, OBD_BRW_READ, exp,
 866                         &repbody->oa, 1, ioo, remote_nb, &npages, local_nb,
 867                         oti, capa);
 868         if (rc != 0)
 869                 GOTO(out_lock, rc);
 870
 871         desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
 872                                     BULK_PUT_SOURCE, OST_BULK_PORTAL);
 873         if (desc == NULL)
 874                 GOTO(out_commitrw, rc = -ENOMEM);
 875
 876         nob = 0;
 877         for (i = 0; i < npages; i++) {
 878                 int page_rc = local_nb[i].rc;
 879
 880                 if (page_rc < 0) {              /* error */
 881                         rc = page_rc;
 882                         break;
 883                 }
 884
 885                 nob += page_rc;
 886                 if (page_rc != 0) {             /* some data! */
 887                         LASSERT (local_nb[i].page != NULL);
 888                         ptlrpc_prep_bulk_page_nopin(desc, local_nb[i].page,
 889                                                     local_nb[i].lnb_page_offset,
 890                                                     page_rc);
 891                 }
 892
 893                 if (page_rc != local_nb[i].len) { /* short read */
 894                         /* All subsequent pages should be 0 */
 895                         while(++i < npages)
 896                                 LASSERT(local_nb[i].rc == 0);
 897                         break;
 898                 }
 899         }
 900
 901         if (body->oa.o_valid & OBD_MD_FLCKSUM) {
 902                 cksum_type_t cksum_type =
 903                         cksum_type_unpack(repbody->oa.o_valid & OBD_MD_FLFLAGS ?
 904                                           repbody->oa.o_flags : 0);
 905                 repbody->oa.o_flags = cksum_type_pack(cksum_type);
 906                 repbody->oa.o_valid = OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
 907                 repbody->oa.o_cksum = ost_checksum_bulk(desc, OST_READ,cksum_type);
 908                 CDEBUG(D_PAGE, "checksum at read origin: %x\n",
 909                        repbody->oa.o_cksum);
 910         } else {
 911                 repbody->oa.o_valid = 0;
 912         }
 913         /* We're finishing using body->oa as an input variable */
 914
 915         /* Check if client was evicted while we were doing i/o before touching
 916            network */
 917         if (rc == 0) {
 918                 if (likely(!CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2)))
 919                         rc = target_bulk_io(exp, desc, &lwi);
 920                 no_reply = rc != 0;
 921         }
 922
 923 out_commitrw:
 924         /* Must commit after prep above in all cases */
 925         rc = obd_commitrw(req->rq_svc_thread->t_env, OBD_BRW_READ, exp,
 926                           &repbody->oa, 1, ioo, remote_nb, npages, local_nb,
 927                           oti, rc);
 928
 929         if (rc == 0)
 930                 ost_drop_id(exp, &repbody->oa);
 931
 932 out_lock:
 933         ost_brw_lock_put(LCK_PR, ioo, remote_nb, &lockh);
 934 out_tls:
 935         ost_tls_put(req);
 936 out_bulk:
 937         if (desc && !CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))
 938                 ptlrpc_free_bulk_nopin(desc);
 939 out:
 940         LASSERT(rc <= 0);
 941         if (rc == 0) {
 942                 req->rq_status = nob;
 943                 ptlrpc_lprocfs_brw(req, nob);
 944                 target_committed_to_req(req);
 945                 ptlrpc_reply(req);
 946         } else if (!no_reply) {
 947                 /* Only reply if there was no comms problem with bulk */
 948                 target_committed_to_req(req);
 949                 req->rq_status = rc;
 950                 ptlrpc_error(req);
 951         } else {
 952                 /* reply out callback would free */
 953                 ptlrpc_req_drop_rs(req);
 954                 LCONSOLE_WARN("%s: Bulk IO read error with %s (at %s), "
 955                               "client will retry: rc %d\n",
 956                               exp->exp_obd->obd_name,
 957                               obd_uuid2str(&exp->exp_client_uuid),
 958                               obd_export_nid2str(exp), rc);
 959         }
 960         /* send a bulk after reply to simulate a network delay or reordering
 961          * by a router */
 962         if (unlikely(CFS_FAIL_PRECHECK(OBD_FAIL_PTLRPC_CLIENT_BULK_CB2))) {
 963                 cfs_waitq_t              waitq;
 964                 struct l_wait_info       lwi1;
 965
 966                 CDEBUG(D_INFO, "reorder BULK\n");
 967                 cfs_waitq_init(&waitq);
 968
 969                 lwi1 = LWI_TIMEOUT_INTR(cfs_time_seconds(3), NULL, NULL, NULL);
 970                 l_wait_event(waitq, 0, &lwi1);
 971                 rc = target_bulk_io(exp, desc, &lwi);
 972                 ptlrpc_free_bulk_nopin(desc);
 973         }
 974
 975         RETURN(rc);
 976 }
 977
 978 static void ost_warn_on_cksum(struct ptlrpc_request *req,
 979                               struct ptlrpc_bulk_desc *desc,
 980                               struct niobuf_local *local_nb, int npages,
 981                               obd_count client_cksum, obd_count server_cksum,
 982                               int mmap)
 983 {
 984         struct obd_export *exp = req->rq_export;
 985         struct ost_body *body;
 986         char *router;
 987         char *via;
 988
 989         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
 990         LASSERT (body != NULL);
 991
 992         if (req->rq_peer.nid == desc->bd_sender) {
 993                 via = router = "";
 994         } else {
 995                 via = " via ";
 996                 router = libcfs_nid2str(desc->bd_sender);
 997         }
 998
 999         if (mmap) {
1000                 CDEBUG_LIMIT(D_INFO, "client csum %x, server csum %x\n",
1001                              client_cksum, server_cksum);
1002                 return;
1003         }
1004
1005         LCONSOLE_ERROR_MSG(0x168, "BAD WRITE CHECKSUM: %s from %s%s%s inode "
1006                            DFID" object "DOSTID" extent ["LPU64"-"LPU64
1007                            "]: client csum %x, server csum %x\n",
1008                            exp->exp_obd->obd_name, libcfs_id2str(req->rq_peer),
1009                            via, router,
1010                            body->oa.o_valid & OBD_MD_FLFID ?
1011                            body->oa.o_parent_seq : (__u64)0,
1012                            body->oa.o_valid & OBD_MD_FLFID ?
1013                            body->oa.o_parent_oid : 0,
1014                            body->oa.o_valid & OBD_MD_FLFID ?
1015                            body->oa.o_parent_ver : 0,
1016                            POSTID(&body->oa.o_oi),
1017                            local_nb[0].lnb_file_offset,
1018                            local_nb[npages-1].lnb_file_offset +
1019                            local_nb[npages-1].len - 1,
1020                            client_cksum, server_cksum);
1021 }
1022
1023 static int ost_brw_write(struct ptlrpc_request *req, struct obd_trans_info *oti)
1024 {
1025         struct ptlrpc_bulk_desc *desc = NULL;
1026         struct obd_export       *exp = req->rq_export;
1027         struct niobuf_remote    *remote_nb;
1028         struct niobuf_local     *local_nb;
1029         struct obd_ioobj        *ioo;
1030         struct ost_body         *body, *repbody;
1031         struct l_wait_info       lwi;
1032         struct lustre_handle     lockh = {0};
1033         struct lustre_capa      *capa = NULL;
1034         __u32                   *rcs;
1035         int objcount, niocount, npages;
1036         int rc, i, j;
1037         obd_count                client_cksum = 0, server_cksum = 0;
1038         cksum_type_t             cksum_type = OBD_CKSUM_CRC32;
1039         int                      no_reply = 0, mmap = 0;
1040         __u32                    o_uid = 0, o_gid = 0;
1041         struct ost_thread_local_cache *tls;
1042         ENTRY;
1043
1044         req->rq_bulk_write = 1;
1045
1046         if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK))
1047                 GOTO(out, rc = -EIO);
1048         if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_WRITE_BULK2))
1049                 GOTO(out, rc = -EFAULT);
1050
1051         /* pause before transaction has been started */
1052         OBD_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_BULK, (obd_timeout + 1) / 4);
1053
1054         /* ost_body, ioobj & noibuf_remote are verified and swabbed in
1055          * ost_rw_hpreq_check(). */
1056         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
1057         if (body == NULL)
1058                 GOTO(out, rc = -EFAULT);
1059
1060         objcount = req_capsule_get_size(&req->rq_pill, &RMF_OBD_IOOBJ,
1061                                         RCL_CLIENT) / sizeof(*ioo);
1062         ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
1063         if (ioo == NULL)
1064                 GOTO(out, rc = -EFAULT);
1065
1066         rc = ost_validate_obdo(exp, &body->oa, ioo);
1067         if (rc)
1068                 RETURN(rc);
1069
1070         for (niocount = i = 0; i < objcount; i++)
1071                 niocount += ioo[i].ioo_bufcnt;
1072
1073         /*
1074          * It'd be nice to have a capsule function to indicate how many elements
1075          * there were in a buffer for an RMF that's declared to be an array.
1076          * It's easy enough to compute the number of elements here though.
1077          */
1078         remote_nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
1079         if (remote_nb == NULL || niocount != (req_capsule_get_size(&req->rq_pill,
1080             &RMF_NIOBUF_REMOTE, RCL_CLIENT) / sizeof(*remote_nb)))
1081                 GOTO(out, rc = -EFAULT);
1082
1083         if ((remote_nb[0].flags & OBD_BRW_MEMALLOC) &&
1084             (exp->exp_connection->c_peer.nid == exp->exp_connection->c_self))
1085                 memory_pressure_set();
1086
1087         if (body->oa.o_valid & OBD_MD_FLOSSCAPA) {
1088                 capa = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
1089                 if (capa == NULL) {
1090                         CERROR("Missing capability for OST BRW WRITE");
1091                         GOTO(out, rc = -EFAULT);
1092                 }
1093         }
1094
1095         req_capsule_set_size(&req->rq_pill, &RMF_RCS, RCL_SERVER,
1096                              niocount * sizeof(*rcs));
1097         rc = req_capsule_server_pack(&req->rq_pill);
1098         if (rc != 0)
1099                 GOTO(out, rc);
1100         CFS_FAIL_TIMEOUT(OBD_FAIL_OST_BRW_PAUSE_PACK, cfs_fail_val);
1101         rcs = req_capsule_server_get(&req->rq_pill, &RMF_RCS);
1102
1103         tls = ost_tls_get(req);
1104         if (tls == NULL)
1105                 GOTO(out_bulk, rc = -ENOMEM);
1106         local_nb = tls->local;
1107
1108         rc = ost_brw_lock_get(LCK_PW, exp, ioo, remote_nb, &lockh);
1109         if (rc != 0)
1110                 GOTO(out_tls, rc);
1111
1112         /*
1113          * If getting the lock took more time than
1114          * client was willing to wait, drop it. b=11330
1115          */
1116         if (cfs_time_current_sec() > req->rq_deadline ||
1117             OBD_FAIL_CHECK(OBD_FAIL_OST_DROP_REQ)) {
1118                 no_reply = 1;
1119                 CERROR("Dropping timed-out write from %s because locking "
1120                        "object "DOSTID" took %ld seconds (limit was %ld).\n",
1121                        libcfs_id2str(req->rq_peer), POSTID(&ioo->ioo_oid),
1122                        cfs_time_current_sec() - req->rq_arrival_time.tv_sec,
1123                        req->rq_deadline - req->rq_arrival_time.tv_sec);
1124                 GOTO(out_lock, rc = -ETIMEDOUT);
1125         }
1126
1127         /* obd_preprw clobbers oa->valid, so save what we need */
1128         if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1129                 client_cksum = body->oa.o_cksum;
1130                 if (body->oa.o_valid & OBD_MD_FLFLAGS)
1131                         cksum_type = cksum_type_unpack(body->oa.o_flags);
1132         }
1133         if (body->oa.o_valid & OBD_MD_FLFLAGS && body->oa.o_flags & OBD_FL_MMAP)
1134                 mmap = 1;
1135
1136         /* Because we already sync grant info with client when reconnect,
1137          * grant info will be cleared for resent req, then fed_grant and
1138          * total_grant will not be modified in following preprw_write */
1139         if (lustre_msg_get_flags(req->rq_reqmsg) & (MSG_RESENT | MSG_REPLAY)) {
1140                 DEBUG_REQ(D_CACHE, req, "clear resent/replay req grant info");
1141                 body->oa.o_valid &= ~OBD_MD_FLGRANT;
1142         }
1143
1144         if (exp_connect_rmtclient(exp)) {
1145                 o_uid = body->oa.o_uid;
1146                 o_gid = body->oa.o_gid;
1147         }
1148
1149         repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1150         memcpy(&repbody->oa, &body->oa, sizeof(repbody->oa));
1151
1152         npages = OST_THREAD_POOL_SIZE;
1153         rc = obd_preprw(req->rq_svc_thread->t_env, OBD_BRW_WRITE, exp,
1154                         &repbody->oa, objcount, ioo, remote_nb, &npages,
1155                         local_nb, oti, capa);
1156         if (rc != 0)
1157                 GOTO(out_lock, rc);
1158
1159         desc = ptlrpc_prep_bulk_exp(req, npages, ioobj_max_brw_get(ioo),
1160                                     BULK_GET_SINK, OST_BULK_PORTAL);
1161         if (desc == NULL)
1162                 GOTO(skip_transfer, rc = -ENOMEM);
1163
1164         /* NB Having prepped, we must commit... */
1165         for (i = 0; i < npages; i++)
1166                 ptlrpc_prep_bulk_page_nopin(desc, local_nb[i].page,
1167                                             local_nb[i].lnb_page_offset,
1168                                             local_nb[i].len);
1169
1170         rc = sptlrpc_svc_prep_bulk(req, desc);
1171         if (rc != 0)
1172                 GOTO(out_lock, rc);
1173
1174         rc = target_bulk_io(exp, desc, &lwi);
1175         no_reply = rc != 0;
1176
1177 skip_transfer:
1178         if (client_cksum != 0 && rc == 0) {
1179                 static int cksum_counter;
1180                 repbody->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1181                 repbody->oa.o_flags &= ~OBD_FL_CKSUM_ALL;
1182                 repbody->oa.o_flags |= cksum_type_pack(cksum_type);
1183                 server_cksum = ost_checksum_bulk(desc, OST_WRITE, cksum_type);
1184                 repbody->oa.o_cksum = server_cksum;
1185                 cksum_counter++;
1186                 if (unlikely(client_cksum != server_cksum)) {
1187                         ost_warn_on_cksum(req, desc, local_nb, npages,
1188                                           client_cksum, server_cksum, mmap);
1189                         cksum_counter = 0;
1190
1191                 } else if ((cksum_counter & (-cksum_counter)) == cksum_counter){
1192                         CDEBUG(D_INFO, "Checksum %u from %s OK: %x\n",
1193                                cksum_counter, libcfs_id2str(req->rq_peer),
1194                                server_cksum);
1195                 }
1196         }
1197
1198         /* Must commit after prep above in all cases */
1199         rc = obd_commitrw(req->rq_svc_thread->t_env, OBD_BRW_WRITE, exp,
1200                           &repbody->oa, objcount, ioo, remote_nb, npages,
1201                           local_nb, oti, rc);
1202         if (rc == -ENOTCONN)
1203                 /* quota acquire process has been given up because
1204                  * either the client has been evicted or the client
1205                  * has timed out the request already */
1206                 no_reply = 1;
1207
1208         if (exp_connect_rmtclient(exp)) {
1209                 repbody->oa.o_uid = o_uid;
1210                 repbody->oa.o_gid = o_gid;
1211         }
1212
1213         /*
1214          * Disable sending mtime back to the client. If the client locked the
1215          * whole object, then it has already updated the mtime on its side,
1216          * otherwise it will have to glimpse anyway (see bug 21489, comment 32)
1217          */
1218         repbody->oa.o_valid &= ~(OBD_MD_FLMTIME | OBD_MD_FLATIME);
1219
1220         if (rc == 0) {
1221                 int nob = 0;
1222
1223                 /* set per-requested niobuf return codes */
1224                 for (i = j = 0; i < niocount; i++) {
1225                         int len = remote_nb[i].len;
1226
1227                         nob += len;
1228                         rcs[i] = 0;
1229                         do {
1230                                 LASSERT(j < npages);
1231                                 if (local_nb[j].rc < 0)
1232                                         rcs[i] = local_nb[j].rc;
1233                                 len -= local_nb[j].len;
1234                                 j++;
1235                         } while (len > 0);
1236                         LASSERT(len == 0);
1237                 }
1238                 LASSERT(j == npages);
1239                 ptlrpc_lprocfs_brw(req, nob);
1240         }
1241
1242 out_lock:
1243         ost_brw_lock_put(LCK_PW, ioo, remote_nb, &lockh);
1244 out_tls:
1245         ost_tls_put(req);
1246 out_bulk:
1247         if (desc)
1248                 ptlrpc_free_bulk_nopin(desc);
1249 out:
1250         if (rc == 0) {
1251                 oti_to_request(oti, req);
1252                 target_committed_to_req(req);
1253                 rc = ptlrpc_reply(req);
1254         } else if (!no_reply) {
1255                 /* Only reply if there was no comms problem with bulk */
1256                 target_committed_to_req(req);
1257                 req->rq_status = rc;
1258                 ptlrpc_error(req);
1259         } else {
1260                 /* reply out callback would free */
1261                 ptlrpc_req_drop_rs(req);
1262                 LCONSOLE_WARN("%s: Bulk IO write error with %s (at %s), "
1263                               "client will retry: rc %d\n",
1264                               exp->exp_obd->obd_name,
1265                               obd_uuid2str(&exp->exp_client_uuid),
1266                               obd_export_nid2str(exp), rc);
1267         }
1268         memory_pressure_clr();
1269         RETURN(rc);
1270 }
1271
1272 /**
1273  * Implementation of OST_SET_INFO.
1274  *
1275  * OST_SET_INFO is like ioctl(): heavily overloaded.  Specifically, it takes a
1276  * "key" and a value RPC buffers as arguments, with the value's contents
1277  * interpreted according to the key.
1278  *
1279  * Value types that need swabbing have swabbing done explicitly, either here or
1280  * in functions called from here.  This should be corrected: all swabbing should
1281  * be done in the capsule abstraction, as that will then allow us to move
1282  * swabbing exclusively to the client without having to modify server code
1283  * outside the capsule abstraction's implementation itself.  To correct this
1284  * will require minor changes to the capsule abstraction; see the comments for
1285  * req_capsule_extend() in layout.c.
1286  */
1287 static int ost_set_info(struct obd_export *exp, struct ptlrpc_request *req)
1288 {
1289         struct ost_body *body = NULL, *repbody;
1290         char *key, *val = NULL;
1291         int keylen, vallen, rc = 0;
1292         int is_grant_shrink = 0;
1293         ENTRY;
1294
1295         key = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
1296         if (key == NULL) {
1297                 DEBUG_REQ(D_HA, req, "no set_info key");
1298                 RETURN(-EFAULT);
1299         }
1300         keylen = req_capsule_get_size(&req->rq_pill, &RMF_SETINFO_KEY,
1301                                       RCL_CLIENT);
1302
1303         vallen = req_capsule_get_size(&req->rq_pill, &RMF_SETINFO_VAL,
1304                                       RCL_CLIENT);
1305
1306         if ((is_grant_shrink = KEY_IS(KEY_GRANT_SHRINK)))
1307                 /* In this case the value is actually an RMF_OST_BODY, so we
1308                  * transmutate the type of this PTLRPC */
1309                 req_capsule_extend(&req->rq_pill, &RQF_OST_SET_GRANT_INFO);
1310
1311         rc = req_capsule_server_pack(&req->rq_pill);
1312         if (rc)
1313                 RETURN(rc);
1314
1315         if (vallen) {
1316                 if (is_grant_shrink) {
1317                         body = req_capsule_client_get(&req->rq_pill,
1318                                                       &RMF_OST_BODY);
1319                         if (!body)
1320                                 RETURN(-EFAULT);
1321
1322                         repbody = req_capsule_server_get(&req->rq_pill,
1323                                                          &RMF_OST_BODY);
1324                         memcpy(repbody, body, sizeof(*body));
1325                         val = (char*)repbody;
1326                 } else {
1327                         val = req_capsule_client_get(&req->rq_pill,
1328                                                      &RMF_SETINFO_VAL);
1329                 }
1330         }
1331
1332         if (KEY_IS(KEY_EVICT_BY_NID)) {
1333                 if (val && vallen)
1334                         obd_export_evict_by_nid(exp->exp_obd, val);
1335                 GOTO(out, rc = 0);
1336         } else if (KEY_IS(KEY_MDS_CONN) && ptlrpc_req_need_swab(req)) {
1337                 if (vallen < sizeof(__u32))
1338                         RETURN(-EFAULT);
1339                 __swab32s((__u32 *)val);
1340         }
1341
1342         /* OBD will also check if KEY_IS(KEY_GRANT_SHRINK), and will cast val to
1343          * a struct ost_body * value */
1344         rc = obd_set_info_async(req->rq_svc_thread->t_env, exp, keylen,
1345                                 key, vallen, val, NULL);
1346 out:
1347         lustre_msg_set_status(req->rq_repmsg, 0);
1348         RETURN(rc);
1349 }
1350
1351 struct locked_region {
1352         cfs_list_t  list;
1353         struct lustre_handle lh;
1354 };
1355
1356 static int lock_region(struct obd_export *exp, struct obdo *oa,
1357                        unsigned long long begin, unsigned long long end,
1358                        cfs_list_t *locked)
1359 {
1360         struct locked_region *region = NULL;
1361         int rc;
1362
1363         LASSERT(begin <= end);
1364         OBD_ALLOC_PTR(region);
1365         if (region == NULL)
1366                 return -ENOMEM;
1367
1368         rc = ost_lock_get(exp, oa, begin, end - begin, &region->lh, LCK_PR, 0);
1369         if (rc) {
1370                 OBD_FREE_PTR(region);
1371                 return rc;
1372         }
1373
1374         CDEBUG(D_OTHER, "ost lock [%llu,%llu], lh=%p\n",
1375                begin, end, &region->lh);
1376         cfs_list_add(&region->list, locked);
1377
1378         return 0;
1379 }
1380
1381 static int lock_zero_regions(struct obd_export *exp, struct obdo *oa,
1382                              struct ll_user_fiemap *fiemap,
1383                              cfs_list_t *locked)
1384 {
1385         __u64 begin = fiemap->fm_start;
1386         unsigned int i;
1387         int rc = 0;
1388         struct ll_fiemap_extent *fiemap_start = fiemap->fm_extents;
1389         ENTRY;
1390
1391         CDEBUG(D_OTHER, "extents count %u\n", fiemap->fm_mapped_extents);
1392         for (i = 0; i < fiemap->fm_mapped_extents; i++) {
1393                 if (fiemap_start[i].fe_logical > begin) {
1394                         CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
1395                                begin, fiemap_start[i].fe_logical);
1396                         rc = lock_region(exp, oa, begin,
1397                                     fiemap_start[i].fe_logical, locked);
1398                         if (rc)
1399                                 RETURN(rc);
1400                 }
1401
1402                 begin = fiemap_start[i].fe_logical + fiemap_start[i].fe_length;
1403         }
1404
1405         if (begin < (fiemap->fm_start + fiemap->fm_length)) {
1406                 CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
1407                        begin, fiemap->fm_start + fiemap->fm_length);
1408                 rc = lock_region(exp, oa, begin,
1409                                  fiemap->fm_start + fiemap->fm_length, locked);
1410         }
1411
1412         RETURN(rc);
1413 }
1414
1415 static void unlock_zero_regions(struct obd_export *exp, cfs_list_t *locked)
1416 {
1417         struct locked_region *entry, *temp;
1418         cfs_list_for_each_entry_safe(entry, temp, locked, list) {
1419                 CDEBUG(D_OTHER, "ost unlock lh=%p\n", &entry->lh);
1420                 ost_lock_put(exp, &entry->lh, LCK_PR);
1421                 cfs_list_del(&entry->list);
1422                 OBD_FREE_PTR(entry);
1423         }
1424 }
1425
1426 static int ost_get_info(struct obd_export *exp, struct ptlrpc_request *req)
1427 {
1428         void *key, *reply;
1429         int keylen, replylen, rc = 0;
1430         struct req_capsule *pill = &req->rq_pill;
1431         cfs_list_t locked = CFS_LIST_HEAD_INIT(locked);
1432         struct ll_fiemap_info_key *fm_key = NULL;
1433         struct ll_user_fiemap *fiemap;
1434         ENTRY;
1435
1436         /* this common part for get_info rpc */
1437         key = req_capsule_client_get(pill, &RMF_SETINFO_KEY);
1438         if (key == NULL) {
1439                 DEBUG_REQ(D_HA, req, "no get_info key");
1440                 RETURN(-EFAULT);
1441         }
1442         keylen = req_capsule_get_size(pill, &RMF_SETINFO_KEY, RCL_CLIENT);
1443
1444         if (KEY_IS(KEY_FIEMAP)) {
1445                 fm_key = key;
1446                 rc = ost_validate_obdo(exp, &fm_key->oa, NULL);
1447                 if (rc)
1448                         RETURN(rc);
1449         }
1450
1451         rc = obd_get_info(req->rq_svc_thread->t_env, exp, keylen, key,
1452                           &replylen, NULL, NULL);
1453         if (rc)
1454                 RETURN(rc);
1455
1456         req_capsule_set_size(pill, &RMF_GENERIC_DATA,
1457                              RCL_SERVER, replylen);
1458
1459         rc = req_capsule_server_pack(pill);
1460         if (rc)
1461                 RETURN(rc);
1462
1463         reply = req_capsule_server_get(pill, &RMF_GENERIC_DATA);
1464         if (reply == NULL)
1465                 RETURN(-ENOMEM);
1466
1467         if (KEY_IS(KEY_LAST_FID)) {
1468                 void *val;
1469                 int vallen;
1470
1471                 req_capsule_extend(pill, &RQF_OST_GET_INFO_LAST_FID);
1472                 val = req_capsule_client_get(pill, &RMF_SETINFO_VAL);
1473                 vallen = req_capsule_get_size(pill, &RMF_SETINFO_VAL,
1474                                               RCL_CLIENT);
1475                 if (val != NULL && vallen > 0 && replylen >= vallen) {
1476                         memcpy(reply, val, vallen);
1477                 } else {
1478                         CERROR("%s: invalid req val %p vallen %d replylen %d\n",
1479                                exp->exp_obd->obd_name, val, vallen, replylen);
1480                         RETURN(-EINVAL);
1481                 }
1482         }
1483
1484         /* call again to fill in the reply buffer */
1485         rc = obd_get_info(req->rq_svc_thread->t_env, exp, keylen, key,
1486                           &replylen, reply, NULL);
1487
1488         /* LU-3219: Lock the sparse areas to make sure dirty flushed back
1489          * from client, then call fiemap again. */
1490         if (KEY_IS(KEY_FIEMAP) && (fm_key->oa.o_valid & OBD_MD_FLFLAGS) &&
1491             (fm_key->oa.o_flags & OBD_FL_SRVLOCK)) {
1492                 fiemap = (struct ll_user_fiemap *)reply;
1493                 fm_key = key;
1494
1495                 rc = lock_zero_regions(exp, &fm_key->oa, fiemap, &locked);
1496                 if (rc == 0 && !cfs_list_empty(&locked))
1497                         rc = obd_get_info(req->rq_svc_thread->t_env, exp,
1498                                           keylen, key, &replylen, reply, NULL);
1499                 unlock_zero_regions(exp, &locked);
1500                 if (rc)
1501                         RETURN(rc);
1502         }
1503
1504         lustre_msg_set_status(req->rq_repmsg, 0);
1505
1506         RETURN(rc);
1507 }
1508
1509 static int ost_handle_quotactl(struct ptlrpc_request *req)
1510 {
1511         struct obd_quotactl *oqctl, *repoqc;
1512         int rc;
1513         ENTRY;
1514
1515         oqctl = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1516         if (oqctl == NULL)
1517                 GOTO(out, rc = -EPROTO);
1518
1519         rc = req_capsule_server_pack(&req->rq_pill);
1520         if (rc)
1521                 GOTO(out, rc);
1522
1523         repoqc = req_capsule_server_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1524         req->rq_status = obd_quotactl(req->rq_export, oqctl);
1525         *repoqc = *oqctl;
1526
1527 out:
1528         RETURN(rc);
1529 }
1530
1531 static int ost_handle_quotacheck(struct ptlrpc_request *req)
1532 {
1533         struct obd_quotactl *oqctl;
1534         int rc;
1535         ENTRY;
1536
1537         oqctl = req_capsule_client_get(&req->rq_pill, &RMF_OBD_QUOTACTL);
1538         if (oqctl == NULL)
1539                 RETURN(-EPROTO);
1540
1541         rc = req_capsule_server_pack(&req->rq_pill);
1542         if (rc)
1543                 RETURN(-ENOMEM);
1544
1545         /* deprecated, not used any more */
1546         req->rq_status = -EOPNOTSUPP;
1547         RETURN(-EOPNOTSUPP);
1548 }
1549
1550 static int ost_llog_handle_connect(struct obd_export *exp,
1551                                    struct ptlrpc_request *req)
1552 {
1553         struct llogd_conn_body *body;
1554         int rc;
1555         ENTRY;
1556
1557         body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_CONN_BODY);
1558         rc = obd_llog_connect(exp, body);
1559         RETURN(rc);
1560 }
1561
1562 #define ost_init_sec_none(reply, exp)                                   \
1563 do {                                                                    \
1564         reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT |          \
1565                                       OBD_CONNECT_RMT_CLIENT_FORCE |    \
1566                                       OBD_CONNECT_OSS_CAPA);            \
1567         spin_lock(&exp->exp_lock);                                      \
1568         *exp_connect_flags_ptr(exp) = reply->ocd_connect_flags;         \
1569         spin_unlock(&exp->exp_lock);                                    \
1570 } while (0)
1571
1572 static int ost_init_sec_level(struct ptlrpc_request *req)
1573 {
1574         struct obd_export *exp = req->rq_export;
1575         struct req_capsule *pill = &req->rq_pill;
1576         struct obd_device *obd = exp->exp_obd;
1577         struct filter_obd *filter = &obd->u.filter;
1578         char *client = libcfs_nid2str(req->rq_peer.nid);
1579         struct obd_connect_data *data, *reply;
1580         int rc = 0, remote;
1581         ENTRY;
1582
1583         data = req_capsule_client_get(pill, &RMF_CONNECT_DATA);
1584         reply = req_capsule_server_get(pill, &RMF_CONNECT_DATA);
1585         if (data == NULL || reply == NULL)
1586                 RETURN(-EFAULT);
1587
1588         /* connection from MDT is always trusted */
1589         if (req->rq_auth_usr_mdt) {
1590                 ost_init_sec_none(reply, exp);
1591                 RETURN(0);
1592         }
1593
1594         /* no GSS support case */
1595         if (!req->rq_auth_gss) {
1596                 if (filter->fo_sec_level > LUSTRE_SEC_NONE) {
1597                         CWARN("client %s -> target %s does not user GSS, "
1598                               "can not run under security level %d.\n",
1599                               client, obd->obd_name, filter->fo_sec_level);
1600                         RETURN(-EACCES);
1601                 } else {
1602                         ost_init_sec_none(reply, exp);
1603                         RETURN(0);
1604                 }
1605         }
1606
1607         /* old version case */
1608         if (unlikely(!(data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) ||
1609                      !(data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA))) {
1610                 if (filter->fo_sec_level > LUSTRE_SEC_NONE) {
1611                         CWARN("client %s -> target %s uses old version, "
1612                               "can not run under security level %d.\n",
1613                               client, obd->obd_name, filter->fo_sec_level);
1614                         RETURN(-EACCES);
1615                 } else {
1616                         CWARN("client %s -> target %s uses old version, "
1617                               "run under security level %d.\n",
1618                               client, obd->obd_name, filter->fo_sec_level);
1619                         ost_init_sec_none(reply, exp);
1620                         RETURN(0);
1621                 }
1622         }
1623
1624         remote = data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT_FORCE;
1625         if (remote) {
1626                 if (!req->rq_auth_remote)
1627                         CDEBUG(D_SEC, "client (local realm) %s -> target %s "
1628                                "asked to be remote.\n", client, obd->obd_name);
1629         } else if (req->rq_auth_remote) {
1630                 remote = 1;
1631                 CDEBUG(D_SEC, "client (remote realm) %s -> target %s is set "
1632                        "as remote by default.\n", client, obd->obd_name);
1633         }
1634
1635         if (remote) {
1636                 if (!filter->fo_fl_oss_capa) {
1637                         CDEBUG(D_SEC, "client %s -> target %s is set as remote,"
1638                                " but OSS capabilities are not enabled: %d.\n",
1639                                client, obd->obd_name, filter->fo_fl_oss_capa);
1640                         RETURN(-EACCES);
1641                 }
1642         }
1643
1644         switch (filter->fo_sec_level) {
1645         case LUSTRE_SEC_NONE:
1646                 if (!remote) {
1647                         ost_init_sec_none(reply, exp);
1648                         break;
1649                 } else {
1650                         CDEBUG(D_SEC, "client %s -> target %s is set as remote, "
1651                                "can not run under security level %d.\n",
1652                                client, obd->obd_name, filter->fo_sec_level);
1653                         RETURN(-EACCES);
1654                 }
1655         case LUSTRE_SEC_REMOTE:
1656                 if (!remote)
1657                         ost_init_sec_none(reply, exp);
1658                 break;
1659         case LUSTRE_SEC_ALL:
1660                 if (!remote) {
1661                         reply->ocd_connect_flags &= ~(OBD_CONNECT_RMT_CLIENT |
1662                                                       OBD_CONNECT_RMT_CLIENT_FORCE);
1663                         if (!filter->fo_fl_oss_capa)
1664                                 reply->ocd_connect_flags &= ~OBD_CONNECT_OSS_CAPA;
1665
1666                         spin_lock(&exp->exp_lock);
1667                         *exp_connect_flags_ptr(exp) = reply->ocd_connect_flags;
1668                         spin_unlock(&exp->exp_lock);
1669                 }
1670                 break;
1671         default:
1672                 RETURN(-EINVAL);
1673         }
1674
1675         RETURN(rc);
1676 }
1677
1678 /*
1679  * FIXME
1680  * this should be done in filter_connect()/filter_reconnect(), but
1681  * we can't obtain information like NID, which stored in incoming
1682  * request, thus can't decide what flavor to use. so we do it here.
1683  *
1684  * This hack should be removed after the OST stack be rewritten, just
1685  * like what we are doing in mdt_obd_connect()/mdt_obd_reconnect().
1686  */
1687 static int ost_connect_check_sptlrpc(struct ptlrpc_request *req)
1688 {
1689         struct obd_export     *exp = req->rq_export;
1690         struct filter_obd     *filter = &exp->exp_obd->u.filter;
1691         struct sptlrpc_flavor  flvr;
1692         int                    rc = 0;
1693
1694         if (unlikely(strcmp(exp->exp_obd->obd_type->typ_name,
1695                             LUSTRE_ECHO_NAME) == 0)) {
1696                 exp->exp_flvr.sf_rpc = SPTLRPC_FLVR_ANY;
1697                 return 0;
1698         }
1699
1700         if (exp->exp_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
1701                 read_lock(&filter->fo_sptlrpc_lock);
1702                 sptlrpc_target_choose_flavor(&filter->fo_sptlrpc_rset,
1703                                              req->rq_sp_from,
1704                                              req->rq_peer.nid,
1705                                              &flvr);
1706                 read_unlock(&filter->fo_sptlrpc_lock);
1707
1708                 spin_lock(&exp->exp_lock);
1709
1710                 exp->exp_sp_peer = req->rq_sp_from;
1711                 exp->exp_flvr = flvr;
1712
1713                 if (exp->exp_flvr.sf_rpc != SPTLRPC_FLVR_ANY &&
1714                     exp->exp_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
1715                         CERROR("unauthorized rpc flavor %x from %s, "
1716                                "expect %x\n", req->rq_flvr.sf_rpc,
1717                                libcfs_nid2str(req->rq_peer.nid),
1718                                exp->exp_flvr.sf_rpc);
1719                         rc = -EACCES;
1720                 }
1721
1722                 spin_unlock(&exp->exp_lock);
1723         } else {
1724                 if (exp->exp_sp_peer != req->rq_sp_from) {
1725                         CERROR("RPC source %s doesn't match %s\n",
1726                                sptlrpc_part2name(req->rq_sp_from),
1727                                sptlrpc_part2name(exp->exp_sp_peer));
1728                         rc = -EACCES;
1729                 } else {
1730                         rc = sptlrpc_target_export_check(exp, req);
1731                 }
1732         }
1733
1734         return rc;
1735 }
1736
1737 /* Ensure that data and metadata are synced to the disk when lock is cancelled
1738  * (if requested) */
1739 int ost_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
1740                      void *data, int flag)
1741 {
1742         struct lu_env   env;
1743         __u32           sync_lock_cancel = 0;
1744         __u32           len = sizeof(sync_lock_cancel);
1745         int             rc = 0;
1746
1747         ENTRY;
1748
1749         rc = lu_env_init(&env, LCT_DT_THREAD);
1750         if (unlikely(rc != 0))
1751                 RETURN(rc);
1752
1753         rc = obd_get_info(&env, lock->l_export, sizeof(KEY_SYNC_LOCK_CANCEL),
1754                           KEY_SYNC_LOCK_CANCEL, &len, &sync_lock_cancel, NULL);
1755         if (rc == 0 && flag == LDLM_CB_CANCELING &&
1756             (lock->l_granted_mode & (LCK_PW|LCK_GROUP)) &&
1757             (sync_lock_cancel == ALWAYS_SYNC_ON_CANCEL ||
1758              (sync_lock_cancel == BLOCKING_SYNC_ON_CANCEL &&
1759               lock->l_flags & LDLM_FL_CBPENDING))) {
1760                 struct obd_info *oinfo;
1761                 struct obdo     *oa;
1762                 int              rc;
1763
1764                 OBD_ALLOC_PTR(oinfo);
1765                 if (!oinfo)
1766                         GOTO(out_env, rc = -ENOMEM);
1767                 OBDO_ALLOC(oa);
1768                 if (!oa) {
1769                         OBD_FREE_PTR(oinfo);
1770                         GOTO(out_env, rc = -ENOMEM);
1771                 }
1772
1773                 ostid_res_name_to_id(&oa->o_oi, &lock->l_resource->lr_name);
1774                 oa->o_valid = OBD_MD_FLID|OBD_MD_FLGROUP;
1775                 oinfo->oi_oa = oa;
1776                 oinfo->oi_capa = BYPASS_CAPA;
1777
1778                 rc = obd_sync(&env, lock->l_export, oinfo,
1779                               lock->l_policy_data.l_extent.start,
1780                               lock->l_policy_data.l_extent.end, NULL);
1781                 if (rc)
1782                         CERROR("Error %d syncing data on lock cancel\n", rc);
1783
1784                 OBDO_FREE(oa);
1785                 OBD_FREE_PTR(oinfo);
1786         }
1787
1788         rc = ldlm_server_blocking_ast(lock, desc, data, flag);
1789 out_env:
1790         lu_env_fini(&env);
1791         RETURN(rc);
1792 }
1793
1794 static int ost_filter_recovery_request(struct ptlrpc_request *req,
1795                                        struct obd_device *obd, int *process)
1796 {
1797         switch (lustre_msg_get_opc(req->rq_reqmsg)) {
1798         case OST_CONNECT: /* This will never get here, but for completeness. */
1799         case OST_DISCONNECT:
1800                *process = 1;
1801                RETURN(0);
1802
1803         case OBD_PING:
1804         case OST_CREATE:
1805         case OST_DESTROY:
1806         case OST_PUNCH:
1807         case OST_SETATTR:
1808         case OST_SYNC:
1809         case OST_WRITE:
1810         case OBD_LOG_CANCEL:
1811         case LDLM_ENQUEUE:
1812                 *process = target_queue_recovery_request(req, obd);
1813                 RETURN(0);
1814
1815         default:
1816                 DEBUG_REQ(D_WARNING, req, "not permitted during recovery");
1817                 *process = -EAGAIN;
1818                 RETURN(0);
1819         }
1820 }
1821
1822 int ost_msg_check_version(struct lustre_msg *msg)
1823 {
1824         int rc;
1825
1826         switch(lustre_msg_get_opc(msg)) {
1827         case OST_CONNECT:
1828         case OST_DISCONNECT:
1829         case OBD_PING:
1830         case SEC_CTX_INIT:
1831         case SEC_CTX_INIT_CONT:
1832         case SEC_CTX_FINI:
1833                 rc = lustre_msg_check_version(msg, LUSTRE_OBD_VERSION);
1834                 if (rc)
1835                         CERROR("bad opc %u version %08x, expecting %08x\n",
1836                                lustre_msg_get_opc(msg),
1837                                lustre_msg_get_version(msg),
1838                                LUSTRE_OBD_VERSION);
1839                 break;
1840         case OST_CREATE:
1841         case OST_DESTROY:
1842         case OST_GETATTR:
1843         case OST_SETATTR:
1844         case OST_WRITE:
1845         case OST_READ:
1846         case OST_PUNCH:
1847         case OST_STATFS:
1848         case OST_SYNC:
1849         case OST_SET_INFO:
1850         case OST_GET_INFO:
1851         case OST_QUOTACHECK:
1852         case OST_QUOTACTL:
1853                 rc = lustre_msg_check_version(msg, LUSTRE_OST_VERSION);
1854                 if (rc)
1855                         CERROR("bad opc %u version %08x, expecting %08x\n",
1856                                lustre_msg_get_opc(msg),
1857                                lustre_msg_get_version(msg),
1858                                LUSTRE_OST_VERSION);
1859                 break;
1860         case LDLM_ENQUEUE:
1861         case LDLM_CONVERT:
1862         case LDLM_CANCEL:
1863         case LDLM_BL_CALLBACK:
1864         case LDLM_CP_CALLBACK:
1865                 rc = lustre_msg_check_version(msg, LUSTRE_DLM_VERSION);
1866                 if (rc)
1867                         CERROR("bad opc %u version %08x, expecting %08x\n",
1868                                lustre_msg_get_opc(msg),
1869                                lustre_msg_get_version(msg),
1870                                LUSTRE_DLM_VERSION);
1871                 break;
1872         case LLOG_ORIGIN_CONNECT:
1873         case OBD_LOG_CANCEL:
1874                 rc = lustre_msg_check_version(msg, LUSTRE_LOG_VERSION);
1875                 if (rc)
1876                         CERROR("bad opc %u version %08x, expecting %08x\n",
1877                                lustre_msg_get_opc(msg),
1878                                lustre_msg_get_version(msg),
1879                                LUSTRE_LOG_VERSION);
1880                 break;
1881         case OST_QUOTA_ADJUST_QUNIT:
1882                 rc = -ENOTSUPP;
1883                 CERROR("Quota adjust is deprecated as of 2.4.0\n");
1884                 break;
1885         default:
1886                 CERROR("Unexpected opcode %d\n", lustre_msg_get_opc(msg));
1887                 rc = -ENOTSUPP;
1888         }
1889         return rc;
1890 }
1891
1892 struct ost_prolong_data {
1893         struct ptlrpc_request *opd_req;
1894         struct obd_export     *opd_exp;
1895         struct obdo           *opd_oa;
1896         struct ldlm_res_id     opd_resid;
1897         struct ldlm_extent     opd_extent;
1898         ldlm_mode_t            opd_mode;
1899         unsigned int           opd_locks;
1900         int                    opd_timeout;
1901 };
1902
1903 /* prolong locks for the current service time of the corresponding
1904  * portal (= OST_IO_PORTAL)
1905  */
1906 static inline int prolong_timeout(struct ptlrpc_request *req)
1907 {
1908         struct ptlrpc_service_part *svcpt = req->rq_rqbd->rqbd_svcpt;
1909
1910         if (AT_OFF)
1911                 return obd_timeout / 2;
1912
1913         return max(at_est2timeout(at_get(&svcpt->scp_at_estimate)),
1914                    ldlm_timeout);
1915 }
1916
1917 static void ost_prolong_lock_one(struct ost_prolong_data *opd,
1918                                  struct ldlm_lock *lock)
1919 {
1920         LASSERT(lock->l_export == opd->opd_exp);
1921
1922         if (lock->l_flags & LDLM_FL_DESTROYED) /* lock already cancelled */
1923                 return;
1924
1925         /* XXX: never try to grab resource lock here because we're inside
1926          * exp_bl_list_lock; in ldlm_lockd.c to handle waiting list we take
1927          * res lock and then exp_bl_list_lock. */
1928
1929         if (!(lock->l_flags & LDLM_FL_AST_SENT))
1930                 /* ignore locks not being cancelled */
1931                 return;
1932
1933         LDLM_DEBUG(lock,
1934                    "refreshed for req x"LPU64" ext("LPU64"->"LPU64") to %ds.\n",
1935                    opd->opd_req->rq_xid, opd->opd_extent.start,
1936                    opd->opd_extent.end, opd->opd_timeout);
1937
1938         /* OK. this is a possible lock the user holds doing I/O
1939          * let's refresh eviction timer for it */
1940         ldlm_refresh_waiting_lock(lock, opd->opd_timeout);
1941         ++opd->opd_locks;
1942 }
1943
1944 static void ost_prolong_locks(struct ost_prolong_data *data)
1945 {
1946         struct obd_export *exp = data->opd_exp;
1947         struct obdo       *oa  = data->opd_oa;
1948         struct ldlm_lock  *lock;
1949         ENTRY;
1950
1951         if (oa->o_valid & OBD_MD_FLHANDLE) {
1952                 /* mostly a request should be covered by only one lock, try
1953                  * fast path. */
1954                 lock = ldlm_handle2lock(&oa->o_handle);
1955                 if (lock != NULL) {
1956                         /* Fast path to check if the lock covers the whole IO
1957                          * region exclusively. */
1958                         if (lock->l_granted_mode == LCK_PW &&
1959                             ldlm_extent_contain(&lock->l_policy_data.l_extent,
1960                                                 &data->opd_extent)) {
1961                                 /* bingo */
1962                                 ost_prolong_lock_one(data, lock);
1963                                 LDLM_LOCK_PUT(lock);
1964                                 RETURN_EXIT;
1965                         }
1966                         LDLM_LOCK_PUT(lock);
1967                 }
1968         }
1969
1970
1971         spin_lock_bh(&exp->exp_bl_list_lock);
1972         cfs_list_for_each_entry(lock, &exp->exp_bl_list, l_exp_list) {
1973                 LASSERT(lock->l_flags & LDLM_FL_AST_SENT);
1974                 LASSERT(lock->l_resource->lr_type == LDLM_EXTENT);
1975
1976                 if (!ldlm_res_eq(&data->opd_resid, &lock->l_resource->lr_name))
1977                         continue;
1978
1979                 if (!ldlm_extent_overlap(&lock->l_policy_data.l_extent,
1980                                          &data->opd_extent))
1981                         continue;
1982
1983                 ost_prolong_lock_one(data, lock);
1984         }
1985         spin_unlock_bh(&exp->exp_bl_list_lock);
1986
1987         EXIT;
1988 }
1989
1990 /**
1991  * Returns 1 if the given PTLRPC matches the given LDLM locks, or 0 if it does
1992  * not.
1993  */
1994 static int ost_rw_hpreq_lock_match(struct ptlrpc_request *req,
1995                                    struct ldlm_lock *lock)
1996 {
1997         struct niobuf_remote *nb;
1998         struct obd_ioobj *ioo;
1999         int mode, opc;
2000         struct ldlm_extent ext;
2001         ENTRY;
2002
2003         opc = lustre_msg_get_opc(req->rq_reqmsg);
2004         LASSERT(opc == OST_READ || opc == OST_WRITE);
2005
2006         ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2007         LASSERT(ioo != NULL);
2008
2009         nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2010         LASSERT(nb != NULL);
2011
2012         ext.start = nb->offset;
2013         nb += ioo->ioo_bufcnt - 1;
2014         ext.end = nb->offset + nb->len - 1;
2015
2016         LASSERT(lock->l_resource != NULL);
2017         if (!ostid_res_name_eq(&ioo->ioo_oid, &lock->l_resource->lr_name))
2018                 RETURN(0);
2019
2020         mode = LCK_PW;
2021         if (opc == OST_READ)
2022                 mode |= LCK_PR;
2023         if (!(lock->l_granted_mode & mode))
2024                 RETURN(0);
2025
2026         RETURN(ldlm_extent_overlap(&lock->l_policy_data.l_extent, &ext));
2027 }
2028
2029 /**
2030  * High-priority queue request check for whether the given PTLRPC request (\a
2031  * req) is blocking an LDLM lock cancel.
2032  *
2033  * Returns 1 if the given given PTLRPC request (\a req) is blocking an LDLM lock
2034  * cancel, 0 if it is not, and -EFAULT if the request is malformed.
2035  *
2036  * Only OST_READs, OST_WRITEs and OST_PUNCHes go on the h-p RPC queue.  This
2037  * function looks only at OST_READs and OST_WRITEs.
2038  */
2039 static int ost_rw_hpreq_check(struct ptlrpc_request *req)
2040 {
2041         struct obd_device *obd = req->rq_export->exp_obd;
2042         struct ost_body *body;
2043         struct obd_ioobj *ioo;
2044         struct niobuf_remote *nb;
2045         struct ost_prolong_data opd = { 0 };
2046         int mode, opc;
2047         ENTRY;
2048
2049         /*
2050          * Use LASSERT to do sanity check because malformed RPCs should have
2051          * been filtered out in ost_hpreq_handler().
2052          */
2053         opc = lustre_msg_get_opc(req->rq_reqmsg);
2054         LASSERT(opc == OST_READ || opc == OST_WRITE);
2055
2056         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
2057         LASSERT(body != NULL);
2058
2059         ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2060         LASSERT(ioo != NULL);
2061
2062         nb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2063         LASSERT(nb != NULL);
2064         LASSERT(!(nb->flags & OBD_BRW_SRVLOCK));
2065
2066         ostid_build_res_name(&ioo->ioo_oid, &opd.opd_resid);
2067
2068         opd.opd_req = req;
2069         mode = LCK_PW;
2070         if (opc == OST_READ)
2071                 mode |= LCK_PR;
2072         opd.opd_mode = mode;
2073         opd.opd_exp = req->rq_export;
2074         opd.opd_oa  = &body->oa;
2075         opd.opd_extent.start = nb->offset;
2076         nb += ioo->ioo_bufcnt - 1;
2077         opd.opd_extent.end = nb->offset + nb->len - 1;
2078         opd.opd_timeout = prolong_timeout(req);
2079
2080         DEBUG_REQ(D_RPCTRACE, req,
2081                "%s %s: refresh rw locks: " LPU64"/"LPU64" ("LPU64"->"LPU64")\n",
2082                obd->obd_name, cfs_current()->comm,
2083                opd.opd_resid.name[0], opd.opd_resid.name[1],
2084                opd.opd_extent.start, opd.opd_extent.end);
2085
2086         ost_prolong_locks(&opd);
2087
2088         CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
2089                obd->obd_name, opd.opd_locks, req);
2090
2091         RETURN(opd.opd_locks > 0);
2092 }
2093
2094 static void ost_rw_hpreq_fini(struct ptlrpc_request *req)
2095 {
2096         (void)ost_rw_hpreq_check(req);
2097 }
2098
2099 /**
2100  * Like ost_rw_hpreq_lock_match(), but for OST_PUNCH RPCs.
2101  */
2102 static int ost_punch_hpreq_lock_match(struct ptlrpc_request *req,
2103                                       struct ldlm_lock *lock)
2104 {
2105         struct ost_body *body;
2106         ENTRY;
2107
2108         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
2109         LASSERT(body != NULL);
2110
2111         if (body->oa.o_valid & OBD_MD_FLHANDLE &&
2112             body->oa.o_handle.cookie == lock->l_handle.h_cookie)
2113                 RETURN(1);
2114
2115         RETURN(0);
2116 }
2117
2118 /**
2119  * Like ost_rw_hpreq_check(), but for OST_PUNCH RPCs.
2120  */
2121 static int ost_punch_hpreq_check(struct ptlrpc_request *req)
2122 {
2123         struct obd_device *obd = req->rq_export->exp_obd;
2124         struct ost_body *body;
2125         struct obdo *oa;
2126         struct ost_prolong_data opd = { 0 };
2127         __u64 start, end;
2128         ENTRY;
2129
2130         body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
2131         LASSERT(body != NULL);
2132
2133         oa = &body->oa;
2134         LASSERT(!(oa->o_valid & OBD_MD_FLFLAGS) ||
2135                 !(oa->o_flags & OBD_FL_SRVLOCK));
2136
2137         start = oa->o_size;
2138         end = start + oa->o_blocks;
2139
2140         opd.opd_req = req;
2141         opd.opd_mode = LCK_PW;
2142         opd.opd_exp = req->rq_export;
2143         opd.opd_oa  = oa;
2144         opd.opd_extent.start = start;
2145         opd.opd_extent.end   = end;
2146         if (oa->o_blocks == OBD_OBJECT_EOF)
2147                 opd.opd_extent.end = OBD_OBJECT_EOF;
2148         opd.opd_timeout = prolong_timeout(req);
2149
2150         ostid_build_res_name(&oa->o_oi, &opd.opd_resid);
2151
2152         CDEBUG(D_DLMTRACE,
2153                "%s: refresh locks: "LPU64"/"LPU64" ("LPU64"->"LPU64")\n",
2154                obd->obd_name,
2155                opd.opd_resid.name[0], opd.opd_resid.name[1],
2156                opd.opd_extent.start, opd.opd_extent.end);
2157
2158         ost_prolong_locks(&opd);
2159
2160         CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
2161                obd->obd_name, opd.opd_locks, req);
2162
2163         RETURN(opd.opd_locks > 0);
2164 }
2165
2166 static void ost_punch_hpreq_fini(struct ptlrpc_request *req)
2167 {
2168         (void)ost_punch_hpreq_check(req);
2169 }
2170
2171 struct ptlrpc_hpreq_ops ost_hpreq_rw = {
2172         .hpreq_lock_match = ost_rw_hpreq_lock_match,
2173         .hpreq_check      = ost_rw_hpreq_check,
2174         .hpreq_fini       = ost_rw_hpreq_fini
2175 };
2176
2177 struct ptlrpc_hpreq_ops ost_hpreq_punch = {
2178         .hpreq_lock_match = ost_punch_hpreq_lock_match,
2179         .hpreq_check      = ost_punch_hpreq_check,
2180         .hpreq_fini       = ost_punch_hpreq_fini
2181 };
2182
2183 /** Assign high priority operations to the request if needed. */
2184 static int ost_io_hpreq_handler(struct ptlrpc_request *req)
2185 {
2186         ENTRY;
2187         if (req->rq_export) {
2188                 int opc = lustre_msg_get_opc(req->rq_reqmsg);
2189                 struct ost_body *body;
2190
2191                 if (opc == OST_READ || opc == OST_WRITE) {
2192                         struct niobuf_remote *nb;
2193                         struct obd_ioobj *ioo;
2194                         int objcount, niocount;
2195                         int rc;
2196                         int i;
2197
2198                         /* RPCs on the H-P queue can be inspected before
2199                          * ost_handler() initializes their pills, so we
2200                          * initialize that here.  Capsule initialization is
2201                          * idempotent, as is setting the pill's format (provided
2202                          * it doesn't change).
2203                          */
2204                         req_capsule_init(&req->rq_pill, req, RCL_SERVER);
2205                         if (opc == OST_READ)
2206                                 req_capsule_set(&req->rq_pill,
2207                                                 &RQF_OST_BRW_READ);
2208                         else
2209                                 req_capsule_set(&req->rq_pill,
2210                                                 &RQF_OST_BRW_WRITE);
2211
2212                         body = req_capsule_client_get(&req->rq_pill,
2213                                                       &RMF_OST_BODY);
2214                         if (body == NULL) {
2215                                 CERROR("Missing/short ost_body\n");
2216                                 RETURN(-EFAULT);
2217                         }
2218
2219                         objcount = req_capsule_get_size(&req->rq_pill,
2220                                                         &RMF_OBD_IOOBJ,
2221                                                         RCL_CLIENT) /
2222                                                         sizeof(*ioo);
2223                         if (objcount == 0) {
2224                                 CERROR("Missing/short ioobj\n");
2225                                 RETURN(-EFAULT);
2226                         }
2227                         if (objcount > 1) {
2228                                 CERROR("too many ioobjs (%d)\n", objcount);
2229                                 RETURN(-EFAULT);
2230                         }
2231
2232                         ioo = req_capsule_client_get(&req->rq_pill,
2233                                                      &RMF_OBD_IOOBJ);
2234                         if (ioo == NULL) {
2235                                 CERROR("Missing/short ioobj\n");
2236                                 RETURN(-EFAULT);
2237                         }
2238
2239                         rc = ost_validate_obdo(req->rq_export, &body->oa, ioo);
2240                         if (rc) {
2241                                 CERROR("invalid object ids\n");
2242                                 RETURN(rc);
2243                         }
2244
2245                         for (niocount = i = 0; i < objcount; i++) {
2246                                 if (ioo[i].ioo_bufcnt == 0) {
2247                                         CERROR("ioo[%d] has zero bufcnt\n", i);
2248                                         RETURN(-EFAULT);
2249                                 }
2250                                 niocount += ioo[i].ioo_bufcnt;
2251                         }
2252                         if (niocount > PTLRPC_MAX_BRW_PAGES) {
2253                                 DEBUG_REQ(D_RPCTRACE, req,
2254                                           "bulk has too many pages (%d)",
2255                                           niocount);
2256                                 RETURN(-EFAULT);
2257                         }
2258
2259                         nb = req_capsule_client_get(&req->rq_pill,
2260                                                     &RMF_NIOBUF_REMOTE);
2261                         if (nb == NULL) {
2262                                 CERROR("Missing/short niobuf\n");
2263                                 RETURN(-EFAULT);
2264                         }
2265
2266                         if (niocount == 0 || !(nb[0].flags & OBD_BRW_SRVLOCK))
2267                                 req->rq_ops = &ost_hpreq_rw;
2268                 } else if (opc == OST_PUNCH) {
2269                         req_capsule_init(&req->rq_pill, req, RCL_SERVER);
2270                         req_capsule_set(&req->rq_pill, &RQF_OST_PUNCH);
2271
2272                         body = req_capsule_client_get(&req->rq_pill,
2273                                                       &RMF_OST_BODY);
2274                         if (body == NULL) {
2275                                 CERROR("Missing/short ost_body\n");
2276                                 RETURN(-EFAULT);
2277                         }
2278
2279                         if (!(body->oa.o_valid & OBD_MD_FLFLAGS) ||
2280                             !(body->oa.o_flags & OBD_FL_SRVLOCK))
2281                                 req->rq_ops = &ost_hpreq_punch;
2282                 }
2283         }
2284         RETURN(0);
2285 }
2286
2287 /* TODO: handle requests in a similar way as MDT: see mdt_handle_common() */
2288 int ost_handle(struct ptlrpc_request *req)
2289 {
2290         struct obd_trans_info trans_info = { 0, };
2291         struct obd_trans_info *oti = &trans_info;
2292         int should_process, fail = OBD_FAIL_OST_ALL_REPLY_NET, rc = 0;
2293         struct obd_device *obd = NULL;
2294         __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
2295         ENTRY;
2296
2297         /* OST module is kept between remounts, but the last reference
2298          * to specific module (say, osd or ofd) kills all related keys
2299          * from the environment. so we have to refill it until the root
2300          * cause is fixed properly */
2301         lu_env_refill(req->rq_svc_thread->t_env);
2302
2303         LASSERT(current->journal_info == NULL);
2304
2305         /* primordial rpcs don't affect server recovery */
2306         switch (opc) {
2307         case SEC_CTX_INIT:
2308         case SEC_CTX_INIT_CONT:
2309         case SEC_CTX_FINI:
2310                 GOTO(out, rc = 0);
2311         }
2312
2313         req_capsule_init(&req->rq_pill, req, RCL_SERVER);
2314
2315         if (opc != OST_CONNECT) {
2316                 if (!class_connected_export(req->rq_export)) {
2317                         CDEBUG(D_HA,"operation %d on unconnected OST from %s\n",
2318                                opc, libcfs_id2str(req->rq_peer));
2319                         req->rq_status = -ENOTCONN;
2320                         GOTO(out, rc = -ENOTCONN);
2321                 }
2322
2323                 obd = req->rq_export->exp_obd;
2324
2325                 /* Check for aborted recovery. */
2326                 if (obd->obd_recovering) {
2327                         rc = ost_filter_recovery_request(req, obd,
2328                                                          &should_process);
2329                         if (rc || !should_process)
2330                                 RETURN(rc);
2331                         else if (should_process < 0) {
2332                                 req->rq_status = should_process;
2333                                 rc = ptlrpc_error(req);
2334                                 RETURN(rc);
2335                         }
2336                 }
2337         }
2338
2339         oti_init(oti, req);
2340
2341         rc = ost_msg_check_version(req->rq_reqmsg);
2342         if (rc)
2343                 RETURN(rc);
2344
2345         if (req && req->rq_reqmsg && req->rq_export &&
2346             (exp_connect_flags(req->rq_export) & OBD_CONNECT_JOBSTATS))
2347                 oti->oti_jobid = lustre_msg_get_jobid(req->rq_reqmsg);
2348
2349         switch (opc) {
2350         case OST_CONNECT: {
2351                 CDEBUG(D_INODE, "connect\n");
2352                 req_capsule_set(&req->rq_pill, &RQF_OST_CONNECT);
2353                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_CONNECT_NET))
2354                         RETURN(0);
2355                 rc = target_handle_connect(req);
2356                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_CONNECT_NET2))
2357                         RETURN(0);
2358                 if (!rc) {
2359                         rc = ost_init_sec_level(req);
2360                         if (!rc)
2361                                 rc = ost_connect_check_sptlrpc(req);
2362                 }
2363                 break;
2364         }
2365         case OST_DISCONNECT:
2366                 CDEBUG(D_INODE, "disconnect\n");
2367                 req_capsule_set(&req->rq_pill, &RQF_OST_DISCONNECT);
2368                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_DISCONNECT_NET))
2369                         RETURN(0);
2370                 rc = target_handle_disconnect(req);
2371                 break;
2372         case OST_CREATE:
2373                 CDEBUG(D_INODE, "create\n");
2374                 req_capsule_set(&req->rq_pill, &RQF_OST_CREATE);
2375                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_CREATE_NET))
2376                         RETURN(0);
2377                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
2378                         GOTO(out, rc = -EROFS);
2379                 rc = ost_create(req->rq_export, req, oti);
2380                 break;
2381         case OST_DESTROY:
2382                 CDEBUG(D_INODE, "destroy\n");
2383                 req_capsule_set(&req->rq_pill, &RQF_OST_DESTROY);
2384                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_DESTROY_NET))
2385                         RETURN(0);
2386                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
2387                         GOTO(out, rc = -EROFS);
2388                 rc = ost_destroy(req->rq_export, req, oti);
2389                 break;
2390         case OST_GETATTR:
2391                 CDEBUG(D_INODE, "getattr\n");
2392                 req_capsule_set(&req->rq_pill, &RQF_OST_GETATTR);
2393                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_GETATTR_NET))
2394                         RETURN(0);
2395                 rc = ost_getattr(req->rq_export, req);
2396                 break;
2397         case OST_SETATTR:
2398                 CDEBUG(D_INODE, "setattr\n");
2399                 req_capsule_set(&req->rq_pill, &RQF_OST_SETATTR);
2400                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_SETATTR_NET))
2401                         RETURN(0);
2402                 rc = ost_setattr(req->rq_export, req, oti);
2403                 break;
2404         case OST_WRITE:
2405                 req_capsule_set(&req->rq_pill, &RQF_OST_BRW_WRITE);
2406                 CDEBUG(D_INODE, "write\n");
2407                 /* req->rq_request_portal would be nice, if it was set */
2408                 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL) {
2409                         CERROR("%s: deny write request from %s to portal %u\n",
2410                                req->rq_export->exp_obd->obd_name,
2411                                obd_export_nid2str(req->rq_export),
2412                                ptlrpc_req2svc(req)->srv_req_portal);
2413                         GOTO(out, rc = -EPROTO);
2414                 }
2415                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_NET))
2416                         RETURN(0);
2417                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_ENOSPC))
2418                         GOTO(out, rc = -ENOSPC);
2419                 if (OBD_FAIL_TIMEOUT(OBD_FAIL_OST_EROFS, 1))
2420                         GOTO(out, rc = -EROFS);
2421                 rc = ost_brw_write(req, oti);
2422                 LASSERT(current->journal_info == NULL);
2423                 /* ost_brw_write sends its own replies */
2424                 RETURN(rc);
2425         case OST_READ:
2426                 req_capsule_set(&req->rq_pill, &RQF_OST_BRW_READ);
2427                 CDEBUG(D_INODE, "read\n");
2428                 /* req->rq_request_portal would be nice, if it was set */
2429                 if (ptlrpc_req2svc(req)->srv_req_portal != OST_IO_PORTAL) {
2430                         CERROR("%s: deny read request from %s to portal %u\n",
2431                                req->rq_export->exp_obd->obd_name,
2432                                obd_export_nid2str(req->rq_export),
2433                                ptlrpc_req2svc(req)->srv_req_portal);
2434                         GOTO(out, rc = -EPROTO);
2435                 }
2436                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_BRW_NET))
2437                         RETURN(0);
2438                 rc = ost_brw_read(req, oti);
2439                 LASSERT(current->journal_info == NULL);
2440                 /* ost_brw_read sends its own replies */
2441                 RETURN(rc);
2442         case OST_PUNCH:
2443                 CDEBUG(D_INODE, "punch\n");
2444                 req_capsule_set(&req->rq_pill, &RQF_OST_PUNCH);
2445                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_PUNCH_NET))
2446                         RETURN(0);
2447                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
2448                         GOTO(out, rc = -EROFS);
2449                 rc = ost_punch(req->rq_export, req, oti);
2450                 break;
2451         case OST_STATFS:
2452                 CDEBUG(D_INODE, "statfs\n");
2453                 req_capsule_set(&req->rq_pill, &RQF_OST_STATFS);
2454                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_STATFS_NET))
2455                         RETURN(0);
2456                 rc = ost_statfs(req);
2457                 break;
2458         case OST_SYNC:
2459                 CDEBUG(D_INODE, "sync\n");
2460                 req_capsule_set(&req->rq_pill, &RQF_OST_SYNC);
2461                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_SYNC_NET))
2462                         RETURN(0);
2463                 rc = ost_sync(req->rq_export, req, oti);
2464                 break;
2465         case OST_SET_INFO:
2466                 DEBUG_REQ(D_INODE, req, "set_info");
2467                 req_capsule_set(&req->rq_pill, &RQF_OBD_SET_INFO);
2468                 rc = ost_set_info(req->rq_export, req);
2469                 break;
2470         case OST_GET_INFO:
2471                 DEBUG_REQ(D_INODE, req, "get_info");
2472                 req_capsule_set(&req->rq_pill, &RQF_OST_GET_INFO_GENERIC);
2473                 rc = ost_get_info(req->rq_export, req);
2474                 break;
2475         case OST_QUOTACHECK:
2476                 CDEBUG(D_INODE, "quotacheck\n");
2477                 req_capsule_set(&req->rq_pill, &RQF_OST_QUOTACHECK);
2478                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_QUOTACHECK_NET))
2479                         RETURN(0);
2480                 rc = ost_handle_quotacheck(req);
2481                 break;
2482         case OST_QUOTACTL:
2483                 CDEBUG(D_INODE, "quotactl\n");
2484                 req_capsule_set(&req->rq_pill, &RQF_OST_QUOTACTL);
2485                 if (OBD_FAIL_CHECK(OBD_FAIL_OST_QUOTACTL_NET))
2486                         RETURN(0);
2487                 rc = ost_handle_quotactl(req);
2488                 break;
2489         case OBD_PING:
2490                 DEBUG_REQ(D_INODE, req, "ping");
2491                 req_capsule_set(&req->rq_pill, &RQF_OBD_PING);
2492                 rc = target_handle_ping(req);
2493                 break;
2494         /* FIXME - just reply status */
2495         case LLOG_ORIGIN_CONNECT:
2496                 DEBUG_REQ(D_INODE, req, "log connect");
2497                 req_capsule_set(&req->rq_pill, &RQF_LLOG_ORIGIN_CONNECT);
2498                 rc = ost_llog_handle_connect(req->rq_export, req);
2499                 req->rq_status = rc;
2500                 rc = req_capsule_server_pack(&req->rq_pill);
2501                 if (rc)
2502                         RETURN(rc);
2503                 RETURN(ptlrpc_reply(req));
2504         case LDLM_ENQUEUE:
2505                 CDEBUG(D_INODE, "enqueue\n");
2506                 req_capsule_set(&req->rq_pill, &RQF_LDLM_ENQUEUE);
2507                 if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_ENQUEUE_NET))
2508                         RETURN(0);
2509                 rc = ldlm_handle_enqueue(req, ldlm_server_completion_ast,
2510                                          ost_blocking_ast,
2511                                          ldlm_server_glimpse_ast);
2512                 fail = OBD_FAIL_OST_LDLM_REPLY_NET;
2513                 break;
2514         case LDLM_CONVERT:
2515                 CDEBUG(D_INODE, "convert\n");
2516                 req_capsule_set(&req->rq_pill, &RQF_LDLM_CONVERT);
2517                 if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CONVERT_NET))
2518                         RETURN(0);
2519                 rc = ldlm_handle_convert(req);
2520                 break;
2521         case LDLM_CANCEL:
2522                 CDEBUG(D_INODE, "cancel\n");
2523                 req_capsule_set(&req->rq_pill, &RQF_LDLM_CANCEL);
2524                 if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_CANCEL_NET))
2525                         RETURN(0);
2526                 rc = ldlm_handle_cancel(req);
2527                 break;
2528         case LDLM_BL_CALLBACK:
2529         case LDLM_CP_CALLBACK:
2530                 CDEBUG(D_INODE, "callback\n");
2531                 CERROR("callbacks should not happen on OST\n");
2532                 /* fall through */
2533         default:
2534                 CERROR("Unexpected opcode %d\n", opc);
2535                 req->rq_status = -ENOTSUPP;
2536                 rc = ptlrpc_error(req);
2537                 RETURN(rc);
2538         }
2539
2540         LASSERT(current->journal_info == NULL);
2541
2542         EXIT;
2543         /* If we're DISCONNECTing, the export_data is already freed */
2544         if (!rc && opc != OST_DISCONNECT)
2545                 target_committed_to_req(req);
2546
2547 out:
2548         if (!rc)
2549                 oti_to_request(oti, req);
2550
2551         target_send_reply(req, rc, fail);
2552         return 0;
2553 }
2554 EXPORT_SYMBOL(ost_handle);
2555
2556 /*
2557  * free per-thread pool created by ost_io_thread_init().
2558  */
2559 static void ost_io_thread_done(struct ptlrpc_thread *thread)
2560 {
2561         struct ost_thread_local_cache *tls; /* TLS stands for Thread-Local
2562                                              * Storage */
2563
2564         ENTRY;
2565
2566         LASSERT(thread != NULL);
2567
2568         /*
2569          * be prepared to handle partially-initialized pools (because this is
2570          * called from ost_io_thread_init() for cleanup.
2571          */
2572         tls = thread->t_data;
2573         if (tls != NULL) {
2574                 OBD_FREE_PTR(tls);
2575                 thread->t_data = NULL;
2576         }
2577         EXIT;
2578 }
2579
2580 /*
2581  * initialize per-thread page pool (bug 5137).
2582  */
2583 static int ost_io_thread_init(struct ptlrpc_thread *thread)
2584 {
2585         struct ost_thread_local_cache *tls;
2586
2587         ENTRY;
2588
2589         LASSERT(thread != NULL);
2590         LASSERT(thread->t_data == NULL);
2591
2592         OBD_ALLOC_PTR(tls);
2593         if (tls == NULL)
2594                 RETURN(-ENOMEM);
2595         thread->t_data = tls;
2596         RETURN(0);
2597 }
2598
2599 #define OST_WATCHDOG_TIMEOUT (obd_timeout * 1000)
2600
2601 static struct cfs_cpt_table     *ost_io_cptable;
2602
2603 /* Sigh - really, this is an OSS, the _server_, not the _target_ */
2604 static int ost_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
2605 {
2606         static struct ptlrpc_service_conf       svc_conf;
2607         struct ost_obd *ost = &obd->u.ost;
2608         struct lprocfs_static_vars lvars;
2609         nodemask_t              *mask;
2610         int rc;
2611         ENTRY;
2612
2613         rc = cfs_cleanup_group_info();
2614         if (rc)
2615                 RETURN(rc);
2616
2617         lprocfs_ost_init_vars(&lvars);
2618         lprocfs_obd_setup(obd, lvars.obd_vars);
2619
2620         mutex_init(&ost->ost_health_mutex);
2621
2622         svc_conf = (typeof(svc_conf)) {
2623                 .psc_name               = LUSTRE_OSS_NAME,
2624                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
2625                 .psc_buf                = {
2626                         .bc_nbufs               = OST_NBUFS,
2627                         .bc_buf_size            = OST_BUFSIZE,
2628                         .bc_req_max_size        = OST_MAXREQSIZE,
2629                         .bc_rep_max_size        = OST_MAXREPSIZE,
2630                         .bc_req_portal          = OST_REQUEST_PORTAL,
2631                         .bc_rep_portal          = OSC_REPLY_PORTAL,
2632                 },
2633                 .psc_thr                = {
2634                         .tc_thr_name            = "ll_ost",
2635                         .tc_thr_factor          = OSS_THR_FACTOR,
2636                         .tc_nthrs_init          = OSS_NTHRS_INIT,
2637                         .tc_nthrs_base          = OSS_NTHRS_BASE,
2638                         .tc_nthrs_max           = OSS_NTHRS_MAX,
2639                         .tc_nthrs_user          = oss_num_threads,
2640                         .tc_cpu_affinity        = 1,
2641                         .tc_ctx_tags            = LCT_DT_THREAD,
2642                 },
2643                 .psc_cpt                = {
2644                         .cc_pattern             = oss_cpts,
2645                 },
2646                 .psc_ops                = {
2647                         .so_req_handler         = ost_handle,
2648                         .so_req_printer         = target_print_req,
2649                         .so_hpreq_handler       = ptlrpc_hpreq_handler,
2650                 },
2651         };
2652         ost->ost_service = ptlrpc_register_service(&svc_conf,
2653                                                    obd->obd_proc_entry);
2654         if (IS_ERR(ost->ost_service)) {
2655                 rc = PTR_ERR(ost->ost_service);
2656                 CERROR("failed to start service: %d\n", rc);
2657                 GOTO(out_lprocfs, rc);
2658         }
2659
2660         memset(&svc_conf, 0, sizeof(svc_conf));
2661         svc_conf = (typeof(svc_conf)) {
2662                 .psc_name               = "ost_create",
2663                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
2664                 .psc_buf                = {
2665                         .bc_nbufs               = OST_NBUFS,
2666                         .bc_buf_size            = OST_BUFSIZE,
2667                         .bc_req_max_size        = OST_MAXREQSIZE,
2668                         .bc_rep_max_size        = OST_MAXREPSIZE,
2669                         .bc_req_portal          = OST_CREATE_PORTAL,
2670                         .bc_rep_portal          = OSC_REPLY_PORTAL,
2671                 },
2672                 .psc_thr                = {
2673                         .tc_thr_name            = "ll_ost_create",
2674                         .tc_thr_factor          = OSS_CR_THR_FACTOR,
2675                         .tc_nthrs_init          = OSS_CR_NTHRS_INIT,
2676                         .tc_nthrs_base          = OSS_CR_NTHRS_BASE,
2677                         .tc_nthrs_max           = OSS_CR_NTHRS_MAX,
2678                         .tc_nthrs_user          = oss_num_create_threads,
2679                         .tc_cpu_affinity        = 1,
2680                         .tc_ctx_tags            = LCT_DT_THREAD,
2681                 },
2682                 .psc_cpt                = {
2683                         .cc_pattern             = oss_cpts,
2684                 },
2685                 .psc_ops                = {
2686                         .so_req_handler         = ost_handle,
2687                         .so_req_printer         = target_print_req,
2688                 },
2689         };
2690         ost->ost_create_service = ptlrpc_register_service(&svc_conf,
2691                                                           obd->obd_proc_entry);
2692         if (IS_ERR(ost->ost_create_service)) {
2693                 rc = PTR_ERR(ost->ost_create_service);
2694                 CERROR("failed to start OST create service: %d\n", rc);
2695                 GOTO(out_service, rc);
2696         }
2697
2698         mask = cfs_cpt_table->ctb_nodemask;
2699         /* event CPT feature is disabled in libcfs level by set partition
2700          * number to 1, we still want to set node affinity for io service */
2701         if (cfs_cpt_number(cfs_cpt_table) == 1 && nodes_weight(*mask) > 1) {
2702                 int     cpt = 0;
2703                 int     i;
2704
2705                 ost_io_cptable = cfs_cpt_table_alloc(nodes_weight(*mask));
2706                 for_each_node_mask(i, *mask) {
2707                         if (ost_io_cptable == NULL) {
2708                                 CWARN("OSS failed to create CPT table\n");
2709                                 break;
2710                         }
2711
2712                         rc = cfs_cpt_set_node(ost_io_cptable, cpt++, i);
2713                         if (!rc) {
2714                                 CWARN("OSS Failed to set node %d for"
2715                                       "IO CPT table\n", i);
2716                                 cfs_cpt_table_free(ost_io_cptable);
2717                                 ost_io_cptable = NULL;
2718                                 break;
2719                         }
2720                 }
2721         }
2722
2723         memset(&svc_conf, 0, sizeof(svc_conf));
2724         svc_conf = (typeof(svc_conf)) {
2725                 .psc_name               = "ost_io",
2726                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
2727                 .psc_buf                = {
2728                         .bc_nbufs               = OST_NBUFS,
2729                         .bc_buf_size            = OST_IO_BUFSIZE,
2730                         .bc_req_max_size        = OST_IO_MAXREQSIZE,
2731                         .bc_rep_max_size        = OST_IO_MAXREPSIZE,
2732                         .bc_req_portal          = OST_IO_PORTAL,
2733                         .bc_rep_portal          = OSC_REPLY_PORTAL,
2734                 },
2735                 .psc_thr                = {
2736                         .tc_thr_name            = "ll_ost_io",
2737                         .tc_thr_factor          = OSS_THR_FACTOR,
2738                         .tc_nthrs_init          = OSS_NTHRS_INIT,
2739                         .tc_nthrs_base          = OSS_NTHRS_BASE,
2740                         .tc_nthrs_max           = OSS_NTHRS_MAX,
2741                         .tc_nthrs_user          = oss_num_threads,
2742                         .tc_cpu_affinity        = 1,
2743                         .tc_ctx_tags            = LCT_DT_THREAD,
2744                 },
2745                 .psc_cpt                = {
2746                         .cc_cptable             = ost_io_cptable,
2747                         .cc_pattern             = ost_io_cptable == NULL ?
2748                                                   oss_io_cpts : NULL,
2749                 },
2750                 .psc_ops                = {
2751                         .so_thr_init            = ost_io_thread_init,
2752                         .so_thr_done            = ost_io_thread_done,
2753                         .so_req_handler         = ost_handle,
2754                         .so_hpreq_handler       = ost_io_hpreq_handler,
2755                         .so_req_printer         = target_print_req,
2756                 },
2757         };
2758         ost->ost_io_service = ptlrpc_register_service(&svc_conf,
2759                                                       obd->obd_proc_entry);
2760         if (IS_ERR(ost->ost_io_service)) {
2761                 rc = PTR_ERR(ost->ost_io_service);
2762                 CERROR("failed to start OST I/O service: %d\n", rc);
2763                 ost->ost_io_service = NULL;
2764                 GOTO(out_create, rc);
2765         }
2766
2767         memset(&svc_conf, 0, sizeof(svc_conf));
2768         svc_conf = (typeof(svc_conf)) {
2769                 .psc_name               = "ost_seq",
2770                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
2771                 .psc_buf                = {
2772                         .bc_nbufs               = OST_NBUFS,
2773                         .bc_buf_size            = OST_BUFSIZE,
2774                         .bc_req_max_size        = OST_MAXREQSIZE,
2775                         .bc_rep_max_size        = OST_MAXREPSIZE,
2776                         .bc_req_portal          = SEQ_DATA_PORTAL,
2777                         .bc_rep_portal          = OSC_REPLY_PORTAL,
2778                 },
2779                 .psc_thr                = {
2780                         .tc_thr_name            = "ll_ost_seq",
2781                         .tc_thr_factor          = OSS_CR_THR_FACTOR,
2782                         .tc_nthrs_init          = OSS_CR_NTHRS_INIT,
2783                         .tc_nthrs_base          = OSS_CR_NTHRS_BASE,
2784                         .tc_nthrs_max           = OSS_CR_NTHRS_MAX,
2785                         .tc_nthrs_user          = oss_num_create_threads,
2786                         .tc_cpu_affinity        = 1,
2787                         .tc_ctx_tags            = LCT_DT_THREAD,
2788                 },
2789
2790                 .psc_cpt                = {
2791                         .cc_pattern          = oss_cpts,
2792                 },
2793                 .psc_ops                = {
2794                         .so_req_handler         = tgt_request_handle,
2795                         .so_req_printer         = target_print_req,
2796                         .so_hpreq_handler       = NULL,
2797                 },
2798         };
2799         ost->ost_seq_service = ptlrpc_register_service(&svc_conf,
2800                                                       obd->obd_proc_entry);
2801         if (IS_ERR(ost->ost_seq_service)) {
2802                 rc = PTR_ERR(ost->ost_seq_service);
2803                 CERROR("failed to start OST seq service: %d\n", rc);
2804                 ost->ost_seq_service = NULL;
2805                 GOTO(out_io, rc);
2806         }
2807
2808 #if 0
2809         /* Object update service */
2810         memset(&svc_conf, 0, sizeof(svc_conf));
2811         svc_conf = (typeof(svc_conf)) {
2812                 .psc_name               = "ost_out",
2813                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
2814                 .psc_buf                = {
2815                         .bc_nbufs               = OST_NBUFS,
2816                         .bc_buf_size            = OUT_BUFSIZE,
2817                         .bc_req_max_size        = OUT_MAXREQSIZE,
2818                         .bc_rep_max_size        = OUT_MAXREPSIZE,
2819                         .bc_req_portal          = OUT_PORTAL,
2820                         .bc_rep_portal          = OSC_REPLY_PORTAL,
2821                 },
2822                 /*
2823                  * We'd like to have a mechanism to set this on a per-device
2824                  * basis, but alas...
2825                  */
2826                 .psc_thr                = {
2827                         .tc_thr_name            = "ll_ost_out",
2828                         .tc_thr_factor          = OSS_CR_THR_FACTOR,
2829                         .tc_nthrs_init          = OSS_CR_NTHRS_INIT,
2830                         .tc_nthrs_base          = OSS_CR_NTHRS_BASE,
2831                         .tc_nthrs_max           = OSS_CR_NTHRS_MAX,
2832                         .tc_nthrs_user          = oss_num_create_threads,
2833                         .tc_cpu_affinity        = 1,
2834                         .tc_ctx_tags            = LCT_DT_THREAD,
2835                 },
2836                 .psc_cpt                = {
2837                         .cc_pattern             = oss_cpts,
2838                 },
2839                 .psc_ops                = {
2840                         .so_req_handler         = tgt_request_handle,
2841                         .so_req_printer         = target_print_req,
2842                         .so_hpreq_handler       = NULL,
2843                 },
2844         };
2845         ost->ost_out_service = ptlrpc_register_service(&svc_conf,
2846                                                        obd->obd_proc_entry);
2847         if (IS_ERR(ost->ost_out_service)) {
2848                 rc = PTR_ERR(ost->ost_out_service);
2849                 CERROR("failed to start out service: %d\n", rc);
2850                 ost->ost_out_service = NULL;
2851                 GOTO(out_seq, rc);
2852         }
2853 #endif
2854         ping_evictor_start();
2855
2856         RETURN(0);
2857 out_io:
2858         ptlrpc_unregister_service(ost->ost_io_service);
2859         ost->ost_io_service = NULL;
2860 out_create:
2861         ptlrpc_unregister_service(ost->ost_create_service);
2862         ost->ost_create_service = NULL;
2863 out_service:
2864         ptlrpc_unregister_service(ost->ost_service);
2865         ost->ost_service = NULL;
2866 out_lprocfs:
2867         lprocfs_obd_cleanup(obd);
2868         RETURN(rc);
2869 }
2870
2871 static int ost_cleanup(struct obd_device *obd)
2872 {
2873         struct ost_obd *ost = &obd->u.ost;
2874         int err = 0;
2875         ENTRY;
2876
2877         ping_evictor_stop();
2878
2879         /* there is no recovery for OST OBD, all recovery is controlled by
2880          * obdfilter OBD */
2881         LASSERT(obd->obd_recovering == 0);
2882         mutex_lock(&ost->ost_health_mutex);
2883         ptlrpc_unregister_service(ost->ost_service);
2884         ptlrpc_unregister_service(ost->ost_create_service);
2885         ptlrpc_unregister_service(ost->ost_io_service);
2886         ptlrpc_unregister_service(ost->ost_seq_service);
2887 #if 0
2888         ptlrpc_unregister_service(ost->ost_out_service);
2889 #endif
2890         ost->ost_service = NULL;
2891         ost->ost_create_service = NULL;
2892         ost->ost_io_service = NULL;
2893         ost->ost_seq_service = NULL;
2894         ost->ost_out_service = NULL;
2895
2896         mutex_unlock(&ost->ost_health_mutex);
2897
2898         lprocfs_obd_cleanup(obd);
2899
2900         if (ost_io_cptable != NULL) {
2901                 cfs_cpt_table_free(ost_io_cptable);
2902                 ost_io_cptable = NULL;
2903         }
2904
2905         RETURN(err);
2906 }
2907
2908 static int ost_health_check(const struct lu_env *env, struct obd_device *obd)
2909 {
2910         struct ost_obd *ost = &obd->u.ost;
2911         int rc = 0;
2912
2913         mutex_lock(&ost->ost_health_mutex);
2914         rc |= ptlrpc_service_health_check(ost->ost_service);
2915         rc |= ptlrpc_service_health_check(ost->ost_create_service);
2916         rc |= ptlrpc_service_health_check(ost->ost_io_service);
2917         mutex_unlock(&ost->ost_health_mutex);
2918
2919         /*
2920          * health_check to return 0 on healthy
2921          * and 1 on unhealthy.
2922          */
2923         if( rc != 0)
2924                 rc = 1;
2925
2926         return rc;
2927 }
2928
2929 struct ost_thread_local_cache *ost_tls(struct ptlrpc_request *r)
2930 {
2931         return (struct ost_thread_local_cache *)(r->rq_svc_thread->t_data);
2932 }
2933
2934 /* use obd ops to offer management infrastructure */
2935 static struct obd_ops ost_obd_ops = {
2936         .o_owner        = THIS_MODULE,
2937         .o_setup        = ost_setup,
2938         .o_cleanup      = ost_cleanup,
2939         .o_health_check = ost_health_check,
2940 };
2941
2942
2943 static int __init ost_init(void)
2944 {
2945         struct lprocfs_static_vars lvars;
2946         int rc;
2947         ENTRY;
2948
2949         ost_page_to_corrupt = alloc_page(GFP_IOFS);
2950
2951         lprocfs_ost_init_vars(&lvars);
2952         rc = class_register_type(&ost_obd_ops, NULL, lvars.module_vars,
2953                                  LUSTRE_OSS_NAME, NULL);
2954
2955         if (ost_num_threads != 0 && oss_num_threads == 0) {
2956                 LCONSOLE_INFO("ost_num_threads module parameter is deprecated, "
2957                               "use oss_num_threads instead or unset both for "
2958                               "dynamic thread startup\n");
2959                 oss_num_threads = ost_num_threads;
2960         }
2961
2962         RETURN(rc);
2963 }
2964
2965 static void /*__exit*/ ost_exit(void)
2966 {
2967         if (ost_page_to_corrupt)
2968                 page_cache_release(ost_page_to_corrupt);
2969
2970         class_unregister_type(LUSTRE_OSS_NAME);
2971 }
2972
2973 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
2974 MODULE_DESCRIPTION("Lustre Object Storage Target (OST) v0.01");
2975 MODULE_LICENSE("GPL");
2976
2977 module_init(ost_init);
2978 module_exit(ost_exit);