lustre/obdclass/obd_config.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (c) 2001-2006 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of the Lustre file system, http://www.lustre.org
   7  *   Lustre is a trademark of Cluster File Systems, Inc.
   8  *
   9  *   You may have signed or agreed to another license before downloading
  10  *   this software.  If so, you are bound by the terms and conditions
  11  *   of that agreement, and the following does not apply to you.  See the
  12  *   LICENSE file included with this distribution for more information.
  13  *
  14  *   If you did not agree to a different license, then this copy of Lustre
  15  *   is open source software; you can redistribute it and/or modify it
  16  *   under the terms of version 2 of the GNU General Public License as
  17  *   published by the Free Software Foundation.
  18  *
  19  *   In either case, Lustre is distributed in the hope that it will be
  20  *   useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  21  *   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *   license text for more details.
  23  *
  24  * Config API
  25  *
  26  */
  27
  28 #define DEBUG_SUBSYSTEM S_CLASS
  29 #ifdef __KERNEL__
  30 #include <obd_class.h>
  31 #include <linux/string.h>
  32 #else
  33 #include <liblustre.h>
  34 #include <obd_class.h>
  35 #include <obd.h>
  36 #endif
  37 #include <lustre_log.h>
  38 #include <lprocfs_status.h>
  39 #include <libcfs/list.h>
  40 #include <lustre_param.h>
  41 #include <class_hash.h>
  42
  43 extern struct lustre_hash_operations uuid_hash_operations;
  44 extern struct lustre_hash_operations nid_hash_operations;
  45
  46 /*********** string parsing utils *********/
  47
  48 /* returns 0 if we find this key in the buffer, else 1 */
  49 int class_find_param(char *buf, char *key, char **valp)
  50 {
  51         char *ptr;
  52
  53         if (!buf)
  54                 return 1;
  55
  56         if ((ptr = strstr(buf, key)) == NULL)
  57                 return 1;
  58
  59         if (valp)
  60                 *valp = ptr + strlen(key);
  61
  62         return 0;
  63 }
  64
  65 /* returns 0 if this is the first key in the buffer, else 1.
  66    valp points to first char after key. */
  67 int class_match_param(char *buf, char *key, char **valp)
  68 {
  69         if (!buf)
  70                 return 1;
  71
  72         if (memcmp(buf, key, strlen(key)) != 0)
  73                 return 1;
  74
  75         if (valp)
  76                 *valp = buf + strlen(key);
  77
  78         return 0;
  79 }
  80
  81 /* 0 is good nid,
  82    1 not found
  83    < 0 error
  84    endh is set to next separator */
  85 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
  86 {
  87         char tmp, *endp;
  88
  89         if (!buf)
  90                 return 1;
  91         while (*buf == ',' || *buf == ':')
  92                 buf++;
  93         if (*buf == ' ' || *buf == '/' || *buf == '\0')
  94                 return 1;
  95
  96         /* nid separators or end of nids */
  97         endp = strpbrk(buf, ",: /");
  98         if (endp == NULL)
  99                 endp = buf + strlen(buf);
 100
 101         tmp = *endp;
 102         *endp = '\0';
 103         *nid = libcfs_str2nid(buf);
 104         if (*nid == LNET_NID_ANY) {
 105                 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
 106                 *endp = tmp;
 107                 return -EINVAL;
 108         }
 109         *endp = tmp;
 110
 111         if (endh)
 112                 *endh = endp;
 113         CDEBUG(D_INFO, "Nid %s\n", libcfs_nid2str(*nid));
 114         return 0;
 115 }
 116
 117 EXPORT_SYMBOL(class_find_param);
 118 EXPORT_SYMBOL(class_match_param);
 119 EXPORT_SYMBOL(class_parse_nid);
 120
 121 /********************** class fns **********************/
 122
 123 /**
 124  * Create a new device and set the type, name and uuid.  If successful, the new
 125  * device can be accessed by either name or uuid.
 126  */
 127 int class_attach(struct lustre_cfg *lcfg)
 128 {
 129         struct obd_device *obd = NULL;
 130         char *typename, *name, *uuid;
 131         int rc, len;
 132         ENTRY;
 133
 134         if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
 135                 CERROR("No type passed!\n");
 136                 RETURN(-EINVAL);
 137         }
 138         typename = lustre_cfg_string(lcfg, 1);
 139
 140         if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
 141                 CERROR("No name passed!\n");
 142                 RETURN(-EINVAL);
 143         }
 144         name = lustre_cfg_string(lcfg, 0);
 145
 146         if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
 147                 CERROR("No UUID passed!\n");
 148                 RETURN(-EINVAL);
 149         }
 150         uuid = lustre_cfg_string(lcfg, 2);
 151
 152         CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
 153                MKSTR(typename), MKSTR(name), MKSTR(uuid));
 154
 155         obd = class_newdev(typename, name);
 156         if (IS_ERR(obd)) {
 157                 /* Already exists or out of obds */
 158                 rc = PTR_ERR(obd);
 159                 obd = NULL;
 160                 CERROR("Cannot create device %s of type %s : %d\n",
 161                        name, typename, rc);
 162                 GOTO(out, rc);
 163         }
 164         LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
 165                  name, typename);
 166         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
 167                  "obd %p obd_magic %08X != %08X\n",
 168                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 169         LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, "%p obd_name %s != %s\n",
 170                  obd, obd->obd_name, name);
 171
 172         rwlock_init(&obd->obd_pool_lock);
 173         obd->obd_pool_limit = 0;
 174         obd->obd_pool_slv = 0;
 175
 176         CFS_INIT_LIST_HEAD(&obd->obd_exports);
 177         CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
 178         CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
 179         spin_lock_init(&obd->obd_nid_lock);
 180         spin_lock_init(&obd->obd_dev_lock);
 181         sema_init(&obd->obd_dev_sem, 1);
 182         spin_lock_init(&obd->obd_osfs_lock);
 183         /* obd->obd_osfs_age must be set to a value in the distant
 184          * past to guarantee a fresh statfs is fetched on mount. */
 185         obd->obd_osfs_age = cfs_time_shift_64(-1000);
 186
 187         /* XXX belongs in setup not attach  */
 188         /* recovery data */
 189         cfs_init_timer(&obd->obd_recovery_timer);
 190         spin_lock_init(&obd->obd_processing_task_lock);
 191         cfs_waitq_init(&obd->obd_next_transno_waitq);
 192         cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
 193         CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
 194         CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
 195         CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
 196
 197         llog_group_init(&obd->obd_olg, OBD_LLOG_GROUP);
 198
 199         spin_lock_init(&obd->obd_uncommitted_replies_lock);
 200         CFS_INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
 201
 202         len = strlen(uuid);
 203         if (len >= sizeof(obd->obd_uuid)) {
 204                 CERROR("uuid must be < %d bytes long\n",
 205                        (int)sizeof(obd->obd_uuid));
 206                 GOTO(out, rc = -EINVAL);
 207         }
 208         memcpy(obd->obd_uuid.uuid, uuid, len);
 209
 210         /* do the attach */
 211         if (OBP(obd, attach)) {
 212                 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
 213                 if (rc)
 214                         GOTO(out, rc = -EINVAL);
 215         }
 216
 217         /* Detach drops this */
 218         spin_lock(&obd->obd_dev_lock);
 219         atomic_set(&obd->obd_refcount, 1);
 220         spin_unlock(&obd->obd_dev_lock);
 221
 222         obd->obd_attached = 1;
 223         CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
 224                obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
 225         RETURN(0);
 226  out:
 227         if (obd != NULL) {
 228                 class_release_dev(obd);
 229         }
 230         return rc;
 231 }
 232
 233 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 234 {
 235         int err = 0;
 236         struct obd_export *exp;
 237         ENTRY;
 238
 239         LASSERT(obd != NULL);
 240         LASSERTF(obd == class_num2obd(obd->obd_minor), "obd %p != obd_devs[%d] %p\n",
 241                  obd, obd->obd_minor, class_num2obd(obd->obd_minor));
 242         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, "obd %p obd_magic %08x != %08x\n",
 243                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 244
 245         /* have we attached a type to this device? */
 246         if (!obd->obd_attached) {
 247                 CERROR("Device %d not attached\n", obd->obd_minor);
 248                 RETURN(-ENODEV);
 249         }
 250
 251         if (obd->obd_set_up) {
 252                 CERROR("Device %d already setup (type %s)\n",
 253                        obd->obd_minor, obd->obd_type->typ_name);
 254                 RETURN(-EEXIST);
 255         }
 256
 257         /* is someone else setting us up right now? (attach inits spinlock) */
 258         spin_lock(&obd->obd_dev_lock);
 259         if (obd->obd_starting) {
 260                 spin_unlock(&obd->obd_dev_lock);
 261                 CERROR("Device %d setup in progress (type %s)\n",
 262                        obd->obd_minor, obd->obd_type->typ_name);
 263                 RETURN(-EEXIST);
 264         }
 265         /* just leave this on forever.  I can't use obd_set_up here because
 266            other fns check that status, and we're not actually set up yet. */
 267         obd->obd_starting = 1;
 268         spin_unlock(&obd->obd_dev_lock);
 269
 270         /* create an uuid-export hash body */
 271         err = lustre_hash_init(&obd->obd_uuid_hash_body, "UUID_HASH",
 272                                128, &uuid_hash_operations);
 273         if (err)
 274                 GOTO(err_hash, err);
 275
 276         /* create a nid-export hash body */
 277         err = lustre_hash_init(&obd->obd_nid_hash_body, "NID_HASH",
 278                                128, &nid_hash_operations);
 279         if (err)
 280                 GOTO(err_hash, err);
 281
 282         /* create a nid-stats hash body */
 283         err = lustre_hash_init(&obd->obd_nid_stats_hash_body, "NID_STATS",
 284                                128, &nid_stat_hash_operations);
 285         if (err)
 286                 GOTO(err_hash, err);
 287
 288         exp = class_new_export(obd, &obd->obd_uuid);
 289         if (IS_ERR(exp))
 290                 RETURN(PTR_ERR(exp));
 291
 292         obd->obd_self_export = exp;
 293         list_del_init(&exp->exp_obd_chain_timed);
 294         class_export_put(exp);
 295
 296         err = obd_setup(obd, lcfg);
 297         if (err)
 298                 GOTO(err_exp, err);
 299
 300         obd->obd_set_up = 1;
 301
 302         spin_lock(&obd->obd_dev_lock);
 303         /* cleanup drops this */
 304         class_incref(obd);
 305         spin_unlock(&obd->obd_dev_lock);
 306
 307         CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
 308                obd->obd_name, obd->obd_uuid.uuid);
 309
 310         RETURN(0);
 311
 312 err_exp:
 313         class_unlink_export(obd->obd_self_export);
 314         obd->obd_self_export = NULL;
 315 err_hash:
 316         lustre_hash_exit(&obd->obd_uuid_hash_body);
 317         lustre_hash_exit(&obd->obd_nid_hash_body);
 318         lustre_hash_exit(&obd->obd_nid_stats_hash_body);
 319         obd->obd_starting = 0;
 320         CERROR("setup %s failed (%d)\n", obd->obd_name, err);
 321         RETURN(err);
 322 }
 323
 324 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
 325 {
 326         ENTRY;
 327
 328         if (obd->obd_set_up) {
 329                 CERROR("OBD device %d still set up\n", obd->obd_minor);
 330                 RETURN(-EBUSY);
 331         }
 332
 333         spin_lock(&obd->obd_dev_lock);
 334         if (!obd->obd_attached) {
 335                 spin_unlock(&obd->obd_dev_lock);
 336                 CERROR("OBD device %d not attached\n", obd->obd_minor);
 337                 RETURN(-ENODEV);
 338         }
 339         obd->obd_attached = 0;
 340         spin_unlock(&obd->obd_dev_lock);
 341
 342         CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
 343                obd->obd_name, obd->obd_uuid.uuid);
 344
 345         class_decref(obd);
 346
 347         /* not strictly necessary, but cleans up eagerly */
 348         obd_zombie_impexp_cull();
 349
 350         RETURN(0);
 351 }
 352
 353 static void dump_exports(struct obd_device *obd)
 354 {
 355         struct obd_export *exp, *n;
 356
 357         list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
 358                 struct ptlrpc_reply_state *rs;
 359                 struct ptlrpc_reply_state *first_reply = NULL;
 360                 int                        nreplies = 0;
 361
 362                 list_for_each_entry (rs, &exp->exp_outstanding_replies,
 363                                      rs_exp_list) {
 364                         if (nreplies == 0)
 365                                 first_reply = rs;
 366                         nreplies++;
 367                 }
 368
 369                 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
 370                        obd->obd_name, exp, exp->exp_client_uuid.uuid,
 371                        obd_export_nid2str(exp),
 372                        atomic_read(&exp->exp_refcount),
 373                        exp->exp_failed, nreplies, first_reply,
 374                        nreplies > 3 ? "..." : "");
 375         }
 376 }
 377
 378 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
 379 {
 380         int err = 0;
 381         char *flag;
 382         ENTRY;
 383
 384         OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
 385
 386         if (!obd->obd_set_up) {
 387                 CERROR("Device %d not setup\n", obd->obd_minor);
 388                 RETURN(-ENODEV);
 389         }
 390
 391         spin_lock(&obd->obd_dev_lock);
 392         if (obd->obd_stopping) {
 393                 spin_unlock(&obd->obd_dev_lock);
 394                 CERROR("OBD %d already stopping\n", obd->obd_minor);
 395                 RETURN(-ENODEV);
 396         }
 397         /* Leave this on forever */
 398         obd->obd_stopping = 1;
 399         spin_unlock(&obd->obd_dev_lock);
 400
 401         if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
 402                 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
 403                         switch (*flag) {
 404                         case 'F':
 405                                 obd->obd_force = 1;
 406                                 break;
 407                         case 'A':
 408                                 LCONSOLE_WARN("Failing over %s\n",
 409                                               obd->obd_name);
 410                                 obd->obd_fail = 1;
 411                                 obd->obd_no_transno = 1;
 412                                 obd->obd_no_recov = 1;
 413                                 /* Set the obd readonly if we can */
 414                                 if (OBP(obd, iocontrol))
 415                                         obd_iocontrol(OBD_IOC_SET_READONLY,
 416                                                       obd->obd_self_export,
 417                                                       0, NULL, NULL);
 418                                 break;
 419                         default:
 420                                 CERROR("unrecognised flag '%c'\n",
 421                                        *flag);
 422                         }
 423         }
 424
 425         /* The three references that should be remaining are the
 426          * obd_self_export and the attach and setup references. */
 427         if (atomic_read(&obd->obd_refcount) > 3) {
 428 #if 0           /* We should never fail to cleanup with mountconf */
 429                 if (!(obd->obd_fail || obd->obd_force)) {
 430                         CERROR("OBD %s is still busy with %d references\n"
 431                                "You should stop active file system users,"
 432                                " or use the --force option to cleanup.\n",
 433                                obd->obd_name, atomic_read(&obd->obd_refcount));
 434                         dump_exports(obd);
 435                         /* Allow a failed cleanup to try again. */
 436                         obd->obd_stopping = 0;
 437                 }
 438 #endif
 439                 /* refcounf - 3 might be the number of real exports
 440                    (excluding self export). But class_incref is called
 441                    by other things as well, so don't count on it. */
 442                 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
 443                        obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
 444                 dump_exports(obd);
 445                 class_disconnect_exports(obd);
 446         }
 447         LASSERT(obd->obd_self_export);
 448
 449         /* destroy an uuid-export hash body */
 450         lustre_hash_exit(&obd->obd_uuid_hash_body);
 451
 452         /* destroy a nid-export hash body */
 453         lustre_hash_exit(&obd->obd_nid_hash_body);
 454
 455         /* destroy a nid-stats hash body */
 456         lustre_hash_exit(&obd->obd_nid_stats_hash_body);
 457
 458         /* Precleanup stage 1, we must make sure all exports (other than the
 459            self-export) get destroyed. */
 460         err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
 461         if (err)
 462                 CERROR("Precleanup %s returned %d\n",
 463                        obd->obd_name, err);
 464
 465         class_decref(obd);
 466         obd->obd_set_up = 0;
 467         RETURN(0);
 468 }
 469
 470 struct obd_device *class_incref(struct obd_device *obd)
 471 {
 472         atomic_inc(&obd->obd_refcount);
 473         CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
 474                atomic_read(&obd->obd_refcount));
 475
 476         return obd;
 477 }
 478
 479 void class_decref(struct obd_device *obd)
 480 {
 481         int err;
 482         int refs;
 483
 484         spin_lock(&obd->obd_dev_lock);
 485         atomic_dec(&obd->obd_refcount);
 486         refs = atomic_read(&obd->obd_refcount);
 487         spin_unlock(&obd->obd_dev_lock);
 488
 489         CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
 490
 491         if ((refs == 1) && obd->obd_stopping) {
 492                 /* All exports (other than the self-export) have been
 493                    destroyed; there should be no more in-progress ops
 494                    by this point.*/
 495                 /* if we're not stopping, we didn't finish setup */
 496                 /* Precleanup stage 2,  do other type-specific
 497                    cleanup requiring the self-export. */
 498                 err = obd_precleanup(obd, OBD_CLEANUP_SELF_EXP);
 499                 if (err)
 500                         CERROR("Precleanup %s returned %d\n",
 501                                obd->obd_name, err);
 502
 503                 spin_lock(&obd->obd_self_export->exp_lock);
 504                 obd->obd_self_export->exp_flags |=
 505                         (obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 506                         (obd->obd_force ? OBD_OPT_FORCE : 0);
 507                 spin_unlock(&obd->obd_self_export->exp_lock);
 508
 509                 /* note that we'll recurse into class_decref again */
 510                 class_unlink_export(obd->obd_self_export);
 511                 return;
 512         }
 513
 514         if (refs == 0) {
 515                 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
 516                        obd->obd_name, obd->obd_uuid.uuid);
 517                 LASSERT(!obd->obd_attached);
 518                 if (obd->obd_stopping) {
 519                         /* If we're not stopping, we were never set up */
 520                         err = obd_cleanup(obd);
 521                         if (err)
 522                                 CERROR("Cleanup %s returned %d\n",
 523                                        obd->obd_name, err);
 524                 }
 525                 if (OBP(obd, detach)) {
 526                         err = OBP(obd,detach)(obd);
 527                         if (err)
 528                                 CERROR("Detach returned %d\n", err);
 529                 }
 530                 class_release_dev(obd);
 531         }
 532 }
 533
 534 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 535 {
 536         struct obd_import *imp;
 537         struct obd_uuid uuid;
 538         int rc;
 539         ENTRY;
 540
 541         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 542             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 543                 CERROR("invalid conn_uuid\n");
 544                 RETURN(-EINVAL);
 545         }
 546         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 547             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
 548             strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
 549                 CERROR("can't add connection on non-client dev\n");
 550                 RETURN(-EINVAL);
 551         }
 552
 553         imp = obd->u.cli.cl_import;
 554         if (!imp) {
 555                 CERROR("try to add conn on immature client dev\n");
 556                 RETURN(-EINVAL);
 557         }
 558
 559         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 560         rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
 561
 562         RETURN(rc);
 563 }
 564
 565 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 566 {
 567         struct obd_import *imp;
 568         struct obd_uuid uuid;
 569         int rc;
 570         ENTRY;
 571
 572         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 573             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 574                 CERROR("invalid conn_uuid\n");
 575                 RETURN(-EINVAL);
 576         }
 577         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 578             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 579                 CERROR("can't del connection on non-client dev\n");
 580                 RETURN(-EINVAL);
 581         }
 582
 583         imp = obd->u.cli.cl_import;
 584         if (!imp) {
 585                 CERROR("try to del conn on immature client dev\n");
 586                 RETURN(-EINVAL);
 587         }
 588
 589         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 590         rc = obd_del_conn(imp, &uuid);
 591
 592         RETURN(rc);
 593 }
 594
 595 CFS_LIST_HEAD(lustre_profile_list);
 596
 597 struct lustre_profile *class_get_profile(const char * prof)
 598 {
 599         struct lustre_profile *lprof;
 600
 601         ENTRY;
 602         list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
 603                 if (!strcmp(lprof->lp_profile, prof)) {
 604                         RETURN(lprof);
 605                 }
 606         }
 607         RETURN(NULL);
 608 }
 609
 610 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
 611                       int mdclen, char *mdc)
 612 {
 613         struct lustre_profile *lprof;
 614         int err = 0;
 615         ENTRY;
 616
 617         CDEBUG(D_CONFIG, "Add profile %s\n", prof);
 618
 619         OBD_ALLOC(lprof, sizeof(*lprof));
 620         if (lprof == NULL)
 621                 RETURN(-ENOMEM);
 622         CFS_INIT_LIST_HEAD(&lprof->lp_list);
 623
 624         LASSERT(proflen == (strlen(prof) + 1));
 625         OBD_ALLOC(lprof->lp_profile, proflen);
 626         if (lprof->lp_profile == NULL)
 627                 GOTO(out, err = -ENOMEM);
 628         memcpy(lprof->lp_profile, prof, proflen);
 629
 630         LASSERT(osclen == (strlen(osc) + 1));
 631         OBD_ALLOC(lprof->lp_dt, osclen);
 632         if (lprof->lp_dt == NULL)
 633                 GOTO(out, err = -ENOMEM);
 634         memcpy(lprof->lp_dt, osc, osclen);
 635
 636         if (mdclen > 0) {
 637                 LASSERT(mdclen == (strlen(mdc) + 1));
 638                 OBD_ALLOC(lprof->lp_md, mdclen);
 639                 if (lprof->lp_md == NULL)
 640                         GOTO(out, err = -ENOMEM);
 641                 memcpy(lprof->lp_md, mdc, mdclen);
 642         }
 643
 644         list_add(&lprof->lp_list, &lustre_profile_list);
 645         RETURN(err);
 646
 647 out:
 648         if (lprof->lp_md)
 649                 OBD_FREE(lprof->lp_md, mdclen);
 650         if (lprof->lp_dt)
 651                 OBD_FREE(lprof->lp_dt, osclen);
 652         if (lprof->lp_profile)
 653                 OBD_FREE(lprof->lp_profile, proflen);
 654         OBD_FREE(lprof, sizeof(*lprof));
 655         RETURN(err);
 656 }
 657
 658 void class_del_profile(const char *prof)
 659 {
 660         struct lustre_profile *lprof;
 661         ENTRY;
 662
 663         CDEBUG(D_CONFIG, "Del profile %s\n", prof);
 664
 665         lprof = class_get_profile(prof);
 666         if (lprof) {
 667                 list_del(&lprof->lp_list);
 668                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 669                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 670                 if (lprof->lp_md)
 671                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 672                 OBD_FREE(lprof, sizeof *lprof);
 673         }
 674         EXIT;
 675 }
 676
 677 /* COMPAT_146 */
 678 void class_del_profiles(void)
 679 {
 680         struct lustre_profile *lprof, *n;
 681         ENTRY;
 682
 683         list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
 684                 list_del(&lprof->lp_list);
 685                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 686                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 687                 if (lprof->lp_md)
 688                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 689                 OBD_FREE(lprof, sizeof *lprof);
 690         }
 691         EXIT;
 692 }
 693
 694 /* We can't call ll_process_config directly because it lives in a module that
 695    must be loaded after this one. */
 696 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
 697
 698 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
 699 {
 700         client_process_config = cpc;
 701 }
 702 EXPORT_SYMBOL(lustre_register_client_process_config);
 703
 704 int class_process_config(struct lustre_cfg *lcfg)
 705 {
 706         struct obd_device *obd;
 707         int err;
 708
 709         LASSERT(lcfg && !IS_ERR(lcfg));
 710         CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
 711
 712         /* Commands that don't need a device */
 713         switch(lcfg->lcfg_command) {
 714         case LCFG_ATTACH: {
 715                 err = class_attach(lcfg);
 716                 GOTO(out, err);
 717         }
 718         case LCFG_ADD_UUID: {
 719                 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
 720                        " (%s)\n", lustre_cfg_string(lcfg, 1),
 721                        lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
 722
 723                 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
 724                 GOTO(out, err);
 725         }
 726         case LCFG_DEL_UUID: {
 727                 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
 728                        (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
 729                        ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
 730
 731                 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
 732                 GOTO(out, err);
 733         }
 734         case LCFG_MOUNTOPT: {
 735                 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
 736                        lustre_cfg_string(lcfg, 1),
 737                        lustre_cfg_string(lcfg, 2),
 738                        lustre_cfg_string(lcfg, 3));
 739                 /* set these mount options somewhere, so ll_fill_super
 740                  * can find them. */
 741                 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
 742                                         lustre_cfg_string(lcfg, 1),
 743                                         LUSTRE_CFG_BUFLEN(lcfg, 2),
 744                                         lustre_cfg_string(lcfg, 2),
 745                                         LUSTRE_CFG_BUFLEN(lcfg, 3),
 746                                         lustre_cfg_string(lcfg, 3));
 747                 GOTO(out, err);
 748         }
 749         case LCFG_DEL_MOUNTOPT: {
 750                 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
 751                        lustre_cfg_string(lcfg, 1));
 752                 class_del_profile(lustre_cfg_string(lcfg, 1));
 753                 GOTO(out, err = 0);
 754         }
 755         case LCFG_SET_TIMEOUT: {
 756                 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
 757                        obd_timeout, lcfg->lcfg_num);
 758                 obd_timeout = max(lcfg->lcfg_num, 1U);
 759                 GOTO(out, err = 0);
 760         }
 761         case LCFG_SET_UPCALL: {
 762                 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
 763                 /* COMPAT_146 Don't fail on old configs */
 764                 GOTO(out, err = 0);
 765         }
 766         case LCFG_MARKER: {
 767                 struct cfg_marker *marker;
 768                 marker = lustre_cfg_buf(lcfg, 1);
 769                 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
 770                        marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
 771                 GOTO(out, err = 0);
 772         }
 773         case LCFG_PARAM: {
 774                 /* llite has no obd */
 775                 if ((class_match_param(lustre_cfg_string(lcfg, 1),
 776                                        PARAM_LLITE, 0) == 0) &&
 777                     client_process_config) {
 778                         err = (*client_process_config)(lcfg);
 779                         GOTO(out, err);
 780                 }
 781                 /* Fall through */
 782                 break;
 783         }
 784         }
 785
 786         /* Commands that require a device */
 787         obd = class_name2obd(lustre_cfg_string(lcfg, 0));
 788         if (obd == NULL) {
 789                 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
 790                         CERROR("this lcfg command requires a device name\n");
 791                 else
 792                         CERROR("no device for: %s\n",
 793                                lustre_cfg_string(lcfg, 0));
 794
 795                 GOTO(out, err = -EINVAL);
 796         }
 797
 798         switch(lcfg->lcfg_command) {
 799         case LCFG_SETUP: {
 800                 err = class_setup(obd, lcfg);
 801                 GOTO(out, err);
 802         }
 803         case LCFG_DETACH: {
 804                 err = class_detach(obd, lcfg);
 805                 GOTO(out, err = 0);
 806         }
 807         case LCFG_CLEANUP: {
 808                 err = class_cleanup(obd, lcfg);
 809                 GOTO(out, err = 0);
 810         }
 811         case LCFG_ADD_CONN: {
 812                 err = class_add_conn(obd, lcfg);
 813                 GOTO(out, err = 0);
 814         }
 815         case LCFG_DEL_CONN: {
 816                 err = class_del_conn(obd, lcfg);
 817                 GOTO(out, err = 0);
 818         }
 819         default: {
 820                 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
 821                 GOTO(out, err);
 822
 823         }
 824         }
 825 out:
 826         if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
 827                 CWARN("Ignoring error %d on optional command %#x\n", err,
 828                       lcfg->lcfg_command);
 829                 err = 0;
 830         }
 831         return err;
 832 }
 833
 834 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 835                              struct lustre_cfg *lcfg, void *data)
 836 {
 837 #ifdef __KERNEL__
 838         struct lprocfs_vars *var;
 839         char *key, *sval;
 840         int i, keylen, vallen;
 841         int matched = 0, j = 0;
 842         int rc = 0;
 843         ENTRY;
 844
 845         if (lcfg->lcfg_command != LCFG_PARAM) {
 846                 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
 847                 RETURN(-EINVAL);
 848         }
 849
 850         /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
 851            or   lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
 852            or   lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
 853         for (i = 1; i < lcfg->lcfg_bufcount; i++) {
 854                 key = lustre_cfg_buf(lcfg, i);
 855                 /* Strip off prefix */
 856                 class_match_param(key, prefix, &key);
 857                 sval = strchr(key, '=');
 858                 if (!sval || (*(sval + 1) == 0)) {
 859                         CERROR("Can't parse param %s\n", key);
 860                         rc = -EINVAL;
 861                         /* continue parsing other params */
 862                         continue;
 863                 }
 864                 keylen = sval - key;
 865                 sval++;
 866                 vallen = strlen(sval);
 867                 matched = 0;
 868                 j = 0;
 869                 /* Search proc entries */
 870                 while (lvars[j].name) {
 871                         var = &lvars[j];
 872                         if (class_match_param(key, (char *)var->name, 0) == 0 &&
 873                             keylen == strlen(var->name)) {
 874                                 matched++;
 875                                 rc = -EROFS;
 876                                 if (var->write_fptr) {
 877                                         mm_segment_t oldfs;
 878                                         oldfs = get_fs();
 879                                         set_fs(KERNEL_DS);
 880                                         rc = (var->write_fptr)(NULL, sval,
 881                                                                vallen, data);
 882                                         set_fs(oldfs);
 883                                 }
 884                                 if (rc < 0)
 885                                         CERROR("writing proc entry %s err %d\n",
 886                                                var->name, rc);
 887                                 break;
 888                         }
 889                         j++;
 890                 }
 891                 if (!matched) {
 892                         CERROR("%s: unknown param %s\n",
 893                                (char *)lustre_cfg_string(lcfg, 0), key);
 894                         /* rc = -EINVAL;        continue parsing other params */
 895                 } else {
 896                         LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
 897                                       (char *)lustre_cfg_string(lcfg, 0),
 898                                       (int)strlen(prefix) - 1, prefix,
 899                                       (int)(sval - key - 1), key, sval);
 900                 }
 901         }
 902
 903         if (rc > 0)
 904                 rc = 0;
 905         RETURN(rc);
 906 #else
 907         CDEBUG(D_CONFIG, "liblustre can't process params.\n");
 908         /* Don't throw config error */
 909         RETURN(0);
 910 #endif
 911 }
 912
 913 int class_config_dump_handler(struct llog_handle * handle,
 914                               struct llog_rec_hdr *rec, void *data);
 915
 916 #ifdef __KERNEL__
 917 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
 918 #else
 919 #define lustre_check_exclusion(a,b)  0
 920 #endif
 921
 922 static int class_config_llog_handler(struct llog_handle * handle,
 923                                      struct llog_rec_hdr *rec, void *data)
 924 {
 925         struct config_llog_instance *clli = data;
 926         int cfg_len = rec->lrh_len;
 927         char *cfg_buf = (char*) (rec + 1);
 928         int rc = 0;
 929         ENTRY;
 930
 931         //class_config_dump_handler(handle, rec, data);
 932
 933         switch (rec->lrh_type) {
 934         case OBD_CFG_REC: {
 935                 struct lustre_cfg *lcfg, *lcfg_new;
 936                 struct lustre_cfg_bufs bufs;
 937                 char *inst_name = NULL;
 938                 int inst_len = 0;
 939                 int inst = 0;
 940
 941                 lcfg = (struct lustre_cfg *)cfg_buf;
 942                 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION))
 943                         lustre_swab_lustre_cfg(lcfg);
 944
 945                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
 946                 if (rc)
 947                         GOTO(out, rc);
 948
 949                 /* Figure out config state info */
 950                 if (lcfg->lcfg_command == LCFG_MARKER) {
 951                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
 952                         CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
 953                                clli->cfg_flags, marker->cm_flags);
 954                         if (marker->cm_flags & CM_START) {
 955                                 /* all previous flags off */
 956                                 clli->cfg_flags = CFG_F_MARKER;
 957                                 if (marker->cm_flags & CM_SKIP) {
 958                                         clli->cfg_flags |= CFG_F_SKIP;
 959                                         CDEBUG(D_CONFIG, "SKIP #%d\n",
 960                                                marker->cm_step);
 961                                 } else if ((marker->cm_flags & CM_EXCLUDE) ||
 962                                            lustre_check_exclusion(clli->cfg_sb,
 963                                                           marker->cm_tgtname)) {
 964                                         clli->cfg_flags |= CFG_F_EXCLUDE;
 965                                         CDEBUG(D_CONFIG, "EXCLUDE %d\n",
 966                                                marker->cm_step);
 967                                 }
 968                         } else if (marker->cm_flags & CM_END) {
 969                                 clli->cfg_flags = 0;
 970                         }
 971                 }
 972                 /* A config command without a start marker before it is
 973                    illegal (post 146) */
 974                 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
 975                     !(clli->cfg_flags & CFG_F_MARKER) &&
 976                     (lcfg->lcfg_command != LCFG_MARKER)) {
 977                         CWARN("Config not inside markers, ignoring! "
 978                               "(inst: %s, uuid: %s, flags: %#x)\n",
 979                               clli->cfg_instance ? clli->cfg_instance : "<null>",
 980                               clli->cfg_uuid.uuid, clli->cfg_flags);
 981                         clli->cfg_flags |= CFG_F_SKIP;
 982                 }
 983                 if (clli->cfg_flags & CFG_F_SKIP) {
 984                         CDEBUG(D_CONFIG, "skipping %#x\n",
 985                                clli->cfg_flags);
 986                         rc = 0;
 987                         /* No processing! */
 988                         break;
 989                 }
 990
 991                 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
 992                     (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
 993                         /* Add inactive instead */
 994                         lcfg->lcfg_command = LCFG_LOV_ADD_INA;
 995
 996                 lustre_cfg_bufs_init(&bufs, lcfg);
 997
 998                 if (clli && clli->cfg_instance &&
 999                     LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1000                         inst = 1;
1001                         inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1002                                 strlen(clli->cfg_instance) + 1;
1003                         OBD_ALLOC(inst_name, inst_len);
1004                         if (inst_name == NULL)
1005                                 GOTO(out, rc = -ENOMEM);
1006                         sprintf(inst_name, "%s-%s",
1007                                 lustre_cfg_string(lcfg, 0),
1008                                 clli->cfg_instance);
1009                         lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1010                         CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1011                                lcfg->lcfg_command, inst_name);
1012                 }
1013
1014                 /* we override the llog's uuid for clients, to insure they
1015                 are unique */
1016                 if (clli && clli->cfg_instance &&
1017                     lcfg->lcfg_command == LCFG_ATTACH) {
1018                         lustre_cfg_bufs_set_string(&bufs, 2,
1019                                                    clli->cfg_uuid.uuid);
1020                 }
1021
1022                 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1023
1024                 lcfg_new->lcfg_num   = lcfg->lcfg_num;
1025                 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1026
1027                 /* XXX Hack to try to remain binary compatible with
1028                  * pre-newconfig logs */
1029                 if (lcfg->lcfg_nal != 0 &&      /* pre-newconfig log? */
1030                     (lcfg->lcfg_nid >> 32) == 0) {
1031                         __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1032
1033                         lcfg_new->lcfg_nid =
1034                                 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1035                         CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1036                               lcfg->lcfg_nal, addr,
1037                               libcfs_nid2str(lcfg_new->lcfg_nid));
1038                 } else {
1039                         lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1040                 }
1041
1042                 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1043
1044                 rc = class_process_config(lcfg_new);
1045                 lustre_cfg_free(lcfg_new);
1046
1047                 if (inst)
1048                         OBD_FREE(inst_name, inst_len);
1049                 break;
1050         }
1051         default:
1052                 CERROR("Unknown llog record type %#x encountered\n",
1053                        rec->lrh_type);
1054                 break;
1055         }
1056 out:
1057         if (rc) {
1058                 CERROR("Err %d on cfg command:\n", rc);
1059                 class_config_dump_handler(handle, rec, data);
1060         }
1061         RETURN(rc);
1062 }
1063
1064 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1065                             struct config_llog_instance *cfg)
1066 {
1067         struct llog_process_cat_data cd = {0, 0};
1068         struct llog_handle *llh;
1069         int rc, rc2;
1070         ENTRY;
1071
1072         CDEBUG(D_INFO, "looking up llog %s\n", name);
1073         rc = llog_create(ctxt, &llh, NULL, name);
1074         if (rc)
1075                 RETURN(rc);
1076
1077         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1078         if (rc)
1079                 GOTO(parse_out, rc);
1080
1081         /* continue processing from where we last stopped to end-of-log */
1082         if (cfg)
1083                 cd.first_idx = cfg->cfg_last_idx;
1084         cd.last_idx = 0;
1085
1086         rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1087
1088         CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1089                cd.first_idx + 1, cd.last_idx, rc);
1090
1091         if (cfg)
1092                 cfg->cfg_last_idx = cd.last_idx;
1093
1094 parse_out:
1095         rc2 = llog_close(llh);
1096         if (rc == 0)
1097                 rc = rc2;
1098
1099         RETURN(rc);
1100 }
1101
1102 int class_config_dump_handler(struct llog_handle * handle,
1103                               struct llog_rec_hdr *rec, void *data)
1104 {
1105         int cfg_len = rec->lrh_len;
1106         char *cfg_buf = (char*) (rec + 1);
1107         char *outstr, *ptr, *end;
1108         int rc = 0;
1109         ENTRY;
1110
1111         OBD_ALLOC(outstr, 256);
1112         end = outstr + 256;
1113         ptr = outstr;
1114         if (!outstr) {
1115                 RETURN(-ENOMEM);
1116         }
1117         if (rec->lrh_type == OBD_CFG_REC) {
1118                 struct lustre_cfg *lcfg;
1119                 int i;
1120
1121                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1122                 if (rc)
1123                         GOTO(out, rc);
1124                 lcfg = (struct lustre_cfg *)cfg_buf;
1125
1126                 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1127                                 lcfg->lcfg_command);
1128                 if (lcfg->lcfg_flags) {
1129                         ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1130                                         lcfg->lcfg_flags);
1131                 }
1132                 if (lcfg->lcfg_num) {
1133                         ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1134                                         lcfg->lcfg_num);
1135                 }
1136                 if (lcfg->lcfg_nid) {
1137                         ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n     ",
1138                                         libcfs_nid2str(lcfg->lcfg_nid),
1139                                         lcfg->lcfg_nid);
1140                 }
1141                 if (lcfg->lcfg_command == LCFG_MARKER) {
1142                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1143                         ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1144                                         marker->cm_step, marker->cm_flags,
1145                                         marker->cm_tgtname, marker->cm_comment);
1146                 } else {
1147                         for (i = 0; i <  lcfg->lcfg_bufcount; i++) {
1148                                 ptr += snprintf(ptr, end-ptr, "%d:%s  ", i,
1149                                                 lustre_cfg_string(lcfg, i));
1150                         }
1151                 }
1152                 LCONSOLE(D_WARNING, "   %s\n", outstr);
1153         } else {
1154                 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1155                 rc = -EINVAL;
1156         }
1157 out:
1158         OBD_FREE(outstr, 256);
1159         RETURN(rc);
1160 }
1161
1162 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1163                            struct config_llog_instance *cfg)
1164 {
1165         struct llog_handle *llh;
1166         int rc, rc2;
1167         ENTRY;
1168
1169         LCONSOLE_INFO("Dumping config log %s\n", name);
1170
1171         rc = llog_create(ctxt, &llh, NULL, name);
1172         if (rc)
1173                 RETURN(rc);
1174
1175         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1176         if (rc)
1177                 GOTO(parse_out, rc);
1178
1179         rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1180 parse_out:
1181         rc2 = llog_close(llh);
1182         if (rc == 0)
1183                 rc = rc2;
1184
1185         LCONSOLE_INFO("End config log %s\n", name);
1186         RETURN(rc);
1187
1188 }
1189
1190 /* Cleanup and detach */
1191 int class_manual_cleanup(struct obd_device *obd)
1192 {
1193         struct lustre_cfg *lcfg;
1194         struct lustre_cfg_bufs bufs;
1195         int rc;
1196         char flags[3]="";
1197         ENTRY;
1198
1199         if (!obd) {
1200                 CERROR("empty cleanup\n");
1201                 RETURN(-EALREADY);
1202         }
1203
1204         if (obd->obd_force)
1205                 strcat(flags, "F");
1206         if (obd->obd_fail)
1207                 strcat(flags, "A");
1208
1209         CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1210                obd->obd_name, flags);
1211
1212         lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1213         lustre_cfg_bufs_set_string(&bufs, 1, flags);
1214         lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1215
1216         rc = class_process_config(lcfg);
1217         if (rc) {
1218                 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1219                 GOTO(out, rc);
1220         }
1221
1222         /* the lcfg is almost the same for both ops */
1223         lcfg->lcfg_command = LCFG_DETACH;
1224         rc = class_process_config(lcfg);
1225         if (rc)
1226                 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1227 out:
1228         lustre_cfg_free(lcfg);
1229         RETURN(rc);
1230 }
1231