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                 obd_health_check_timeout = HEALTH_CHECK_TIMEOUT;
 760                 GOTO(out, err = 0);
 761         }
 762         case LCFG_SET_UPCALL: {
 763                 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
 764                 /* COMPAT_146 Don't fail on old configs */
 765                 GOTO(out, err = 0);
 766         }
 767         case LCFG_MARKER: {
 768                 struct cfg_marker *marker;
 769                 marker = lustre_cfg_buf(lcfg, 1);
 770                 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
 771                        marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
 772                 GOTO(out, err = 0);
 773         }
 774         case LCFG_PARAM: {
 775                 /* llite has no obd */
 776                 if ((class_match_param(lustre_cfg_string(lcfg, 1),
 777                                        PARAM_LLITE, 0) == 0) &&
 778                     client_process_config) {
 779                         err = (*client_process_config)(lcfg);
 780                         GOTO(out, err);
 781                 }
 782                 /* Fall through */
 783                 break;
 784         }
 785         }
 786
 787         /* Commands that require a device */
 788         obd = class_name2obd(lustre_cfg_string(lcfg, 0));
 789         if (obd == NULL) {
 790                 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
 791                         CERROR("this lcfg command requires a device name\n");
 792                 else
 793                         CERROR("no device for: %s\n",
 794                                lustre_cfg_string(lcfg, 0));
 795
 796                 GOTO(out, err = -EINVAL);
 797         }
 798
 799         switch(lcfg->lcfg_command) {
 800         case LCFG_SETUP: {
 801                 err = class_setup(obd, lcfg);
 802                 GOTO(out, err);
 803         }
 804         case LCFG_DETACH: {
 805                 err = class_detach(obd, lcfg);
 806                 GOTO(out, err = 0);
 807         }
 808         case LCFG_CLEANUP: {
 809                 err = class_cleanup(obd, lcfg);
 810                 GOTO(out, err = 0);
 811         }
 812         case LCFG_ADD_CONN: {
 813                 err = class_add_conn(obd, lcfg);
 814                 GOTO(out, err = 0);
 815         }
 816         case LCFG_DEL_CONN: {
 817                 err = class_del_conn(obd, lcfg);
 818                 GOTO(out, err = 0);
 819         }
 820         default: {
 821                 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
 822                 GOTO(out, err);
 823
 824         }
 825         }
 826 out:
 827         if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
 828                 CWARN("Ignoring error %d on optional command %#x\n", err,
 829                       lcfg->lcfg_command);
 830                 err = 0;
 831         }
 832         return err;
 833 }
 834
 835 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 836                              struct lustre_cfg *lcfg, void *data)
 837 {
 838 #ifdef __KERNEL__
 839         struct lprocfs_vars *var;
 840         char *key, *sval;
 841         int i, keylen, vallen;
 842         int matched = 0, j = 0;
 843         int rc = 0;
 844         ENTRY;
 845
 846         if (lcfg->lcfg_command != LCFG_PARAM) {
 847                 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
 848                 RETURN(-EINVAL);
 849         }
 850
 851         /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
 852            or   lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
 853            or   lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
 854         for (i = 1; i < lcfg->lcfg_bufcount; i++) {
 855                 key = lustre_cfg_buf(lcfg, i);
 856                 /* Strip off prefix */
 857                 class_match_param(key, prefix, &key);
 858                 sval = strchr(key, '=');
 859                 if (!sval || (*(sval + 1) == 0)) {
 860                         CERROR("Can't parse param %s\n", key);
 861                         rc = -EINVAL;
 862                         /* continue parsing other params */
 863                         continue;
 864                 }
 865                 keylen = sval - key;
 866                 sval++;
 867                 vallen = strlen(sval);
 868                 matched = 0;
 869                 j = 0;
 870                 /* Search proc entries */
 871                 while (lvars[j].name) {
 872                         var = &lvars[j];
 873                         if (class_match_param(key, (char *)var->name, 0) == 0 &&
 874                             keylen == strlen(var->name)) {
 875                                 matched++;
 876                                 rc = -EROFS;
 877                                 if (var->write_fptr) {
 878                                         mm_segment_t oldfs;
 879                                         oldfs = get_fs();
 880                                         set_fs(KERNEL_DS);
 881                                         rc = (var->write_fptr)(NULL, sval,
 882                                                                vallen, data);
 883                                         set_fs(oldfs);
 884                                 }
 885                                 if (rc < 0)
 886                                         CERROR("writing proc entry %s err %d\n",
 887                                                var->name, rc);
 888                                 break;
 889                         }
 890                         j++;
 891                 }
 892                 if (!matched) {
 893                         CERROR("%s: unknown param %s\n",
 894                                (char *)lustre_cfg_string(lcfg, 0), key);
 895                         rc = -EINVAL;
 896                         /* continue parsing other params */
 897                 } else {
 898                         LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
 899                                       (char *)lustre_cfg_string(lcfg, 0),
 900                                       (int)strlen(prefix) - 1, prefix,
 901                                       (int)(sval - key - 1), key, sval);
 902                 }
 903         }
 904
 905         if (rc > 0)
 906                 rc = 0;
 907         RETURN(rc);
 908 #else
 909         CDEBUG(D_CONFIG, "liblustre can't process params.\n");
 910         /* Don't throw config error */
 911         RETURN(0);
 912 #endif
 913 }
 914
 915 int class_config_dump_handler(struct llog_handle * handle,
 916                               struct llog_rec_hdr *rec, void *data);
 917
 918 #ifdef __KERNEL__
 919 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
 920 #else
 921 #define lustre_check_exclusion(a,b)  0
 922 #endif
 923
 924 static int class_config_llog_handler(struct llog_handle * handle,
 925                                      struct llog_rec_hdr *rec, void *data)
 926 {
 927         struct config_llog_instance *clli = data;
 928         int cfg_len = rec->lrh_len;
 929         char *cfg_buf = (char*) (rec + 1);
 930         int rc = 0;
 931         ENTRY;
 932
 933         //class_config_dump_handler(handle, rec, data);
 934
 935         switch (rec->lrh_type) {
 936         case OBD_CFG_REC: {
 937                 struct lustre_cfg *lcfg, *lcfg_new;
 938                 struct lustre_cfg_bufs bufs;
 939                 char *inst_name = NULL;
 940                 int inst_len = 0;
 941                 int inst = 0;
 942
 943                 lcfg = (struct lustre_cfg *)cfg_buf;
 944                 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION))
 945                         lustre_swab_lustre_cfg(lcfg);
 946
 947                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
 948                 if (rc)
 949                         GOTO(out, rc);
 950
 951                 /* Figure out config state info */
 952                 if (lcfg->lcfg_command == LCFG_MARKER) {
 953                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
 954                         CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
 955                                clli->cfg_flags, marker->cm_flags);
 956                         if (marker->cm_flags & CM_START) {
 957                                 /* all previous flags off */
 958                                 clli->cfg_flags = CFG_F_MARKER;
 959                                 if (marker->cm_flags & CM_SKIP) {
 960                                         clli->cfg_flags |= CFG_F_SKIP;
 961                                         CDEBUG(D_CONFIG, "SKIP #%d\n",
 962                                                marker->cm_step);
 963                                 } else if ((marker->cm_flags & CM_EXCLUDE) ||
 964                                            lustre_check_exclusion(clli->cfg_sb,
 965                                                           marker->cm_tgtname)) {
 966                                         clli->cfg_flags |= CFG_F_EXCLUDE;
 967                                         CDEBUG(D_CONFIG, "EXCLUDE %d\n",
 968                                                marker->cm_step);
 969                                 }
 970                         } else if (marker->cm_flags & CM_END) {
 971                                 clli->cfg_flags = 0;
 972                         }
 973                 }
 974                 /* A config command without a start marker before it is
 975                    illegal (post 146) */
 976                 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
 977                     !(clli->cfg_flags & CFG_F_MARKER) &&
 978                     (lcfg->lcfg_command != LCFG_MARKER)) {
 979                         CWARN("Config not inside markers, ignoring! "
 980                               "(inst: %s, uuid: %s, flags: %#x)\n",
 981                               clli->cfg_instance ? clli->cfg_instance : "<null>",
 982                               clli->cfg_uuid.uuid, clli->cfg_flags);
 983                         clli->cfg_flags |= CFG_F_SKIP;
 984                 }
 985                 if (clli->cfg_flags & CFG_F_SKIP) {
 986                         CDEBUG(D_CONFIG, "skipping %#x\n",
 987                                clli->cfg_flags);
 988                         rc = 0;
 989                         /* No processing! */
 990                         break;
 991                 }
 992
 993                 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
 994                     (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
 995                         /* Add inactive instead */
 996                         lcfg->lcfg_command = LCFG_LOV_ADD_INA;
 997
 998                 lustre_cfg_bufs_init(&bufs, lcfg);
 999
1000                 if (clli && clli->cfg_instance &&
1001                     LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1002                         inst = 1;
1003                         inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1004                                 strlen(clli->cfg_instance) + 1;
1005                         OBD_ALLOC(inst_name, inst_len);
1006                         if (inst_name == NULL)
1007                                 GOTO(out, rc = -ENOMEM);
1008                         sprintf(inst_name, "%s-%s",
1009                                 lustre_cfg_string(lcfg, 0),
1010                                 clli->cfg_instance);
1011                         lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1012                         CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1013                                lcfg->lcfg_command, inst_name);
1014                 }
1015
1016                 /* we override the llog's uuid for clients, to insure they
1017                 are unique */
1018                 if (clli && clli->cfg_instance &&
1019                     lcfg->lcfg_command == LCFG_ATTACH) {
1020                         lustre_cfg_bufs_set_string(&bufs, 2,
1021                                                    clli->cfg_uuid.uuid);
1022                 }
1023
1024                 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1025
1026                 lcfg_new->lcfg_num   = lcfg->lcfg_num;
1027                 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1028
1029                 /* XXX Hack to try to remain binary compatible with
1030                  * pre-newconfig logs */
1031                 if (lcfg->lcfg_nal != 0 &&      /* pre-newconfig log? */
1032                     (lcfg->lcfg_nid >> 32) == 0) {
1033                         __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1034
1035                         lcfg_new->lcfg_nid =
1036                                 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1037                         CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1038                               lcfg->lcfg_nal, addr,
1039                               libcfs_nid2str(lcfg_new->lcfg_nid));
1040                 } else {
1041                         lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1042                 }
1043
1044                 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1045
1046                 rc = class_process_config(lcfg_new);
1047                 lustre_cfg_free(lcfg_new);
1048
1049                 if (inst)
1050                         OBD_FREE(inst_name, inst_len);
1051                 break;
1052         }
1053         default:
1054                 CERROR("Unknown llog record type %#x encountered\n",
1055                        rec->lrh_type);
1056                 break;
1057         }
1058 out:
1059         if (rc) {
1060                 CERROR("Err %d on cfg command:\n", rc);
1061                 class_config_dump_handler(handle, rec, data);
1062         }
1063         RETURN(rc);
1064 }
1065
1066 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1067                             struct config_llog_instance *cfg)
1068 {
1069         struct llog_process_cat_data cd = {0, 0};
1070         struct llog_handle *llh;
1071         int rc, rc2;
1072         ENTRY;
1073
1074         CDEBUG(D_INFO, "looking up llog %s\n", name);
1075         rc = llog_create(ctxt, &llh, NULL, name);
1076         if (rc)
1077                 RETURN(rc);
1078
1079         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1080         if (rc)
1081                 GOTO(parse_out, rc);
1082
1083         /* continue processing from where we last stopped to end-of-log */
1084         if (cfg)
1085                 cd.first_idx = cfg->cfg_last_idx;
1086         cd.last_idx = 0;
1087
1088         rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1089
1090         CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1091                cd.first_idx + 1, cd.last_idx, rc);
1092
1093         if (cfg)
1094                 cfg->cfg_last_idx = cd.last_idx;
1095
1096 parse_out:
1097         rc2 = llog_close(llh);
1098         if (rc == 0)
1099                 rc = rc2;
1100
1101         RETURN(rc);
1102 }
1103
1104 int class_config_dump_handler(struct llog_handle * handle,
1105                               struct llog_rec_hdr *rec, void *data)
1106 {
1107         int cfg_len = rec->lrh_len;
1108         char *cfg_buf = (char*) (rec + 1);
1109         char *outstr, *ptr, *end;
1110         int rc = 0;
1111         ENTRY;
1112
1113         OBD_ALLOC(outstr, 256);
1114         end = outstr + 256;
1115         ptr = outstr;
1116         if (!outstr) {
1117                 RETURN(-ENOMEM);
1118         }
1119         if (rec->lrh_type == OBD_CFG_REC) {
1120                 struct lustre_cfg *lcfg;
1121                 int i;
1122
1123                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1124                 if (rc)
1125                         GOTO(out, rc);
1126                 lcfg = (struct lustre_cfg *)cfg_buf;
1127
1128                 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1129                                 lcfg->lcfg_command);
1130                 if (lcfg->lcfg_flags) {
1131                         ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1132                                         lcfg->lcfg_flags);
1133                 }
1134                 if (lcfg->lcfg_num) {
1135                         ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1136                                         lcfg->lcfg_num);
1137                 }
1138                 if (lcfg->lcfg_nid) {
1139                         ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n     ",
1140                                         libcfs_nid2str(lcfg->lcfg_nid),
1141                                         lcfg->lcfg_nid);
1142                 }
1143                 if (lcfg->lcfg_command == LCFG_MARKER) {
1144                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1145                         ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1146                                         marker->cm_step, marker->cm_flags,
1147                                         marker->cm_tgtname, marker->cm_comment);
1148                 } else {
1149                         for (i = 0; i <  lcfg->lcfg_bufcount; i++) {
1150                                 ptr += snprintf(ptr, end-ptr, "%d:%s  ", i,
1151                                                 lustre_cfg_string(lcfg, i));
1152                         }
1153                 }
1154                 LCONSOLE(D_WARNING, "   %s\n", outstr);
1155         } else {
1156                 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1157                 rc = -EINVAL;
1158         }
1159 out:
1160         OBD_FREE(outstr, 256);
1161         RETURN(rc);
1162 }
1163
1164 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1165                            struct config_llog_instance *cfg)
1166 {
1167         struct llog_handle *llh;
1168         int rc, rc2;
1169         ENTRY;
1170
1171         LCONSOLE_INFO("Dumping config log %s\n", name);
1172
1173         rc = llog_create(ctxt, &llh, NULL, name);
1174         if (rc)
1175                 RETURN(rc);
1176
1177         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1178         if (rc)
1179                 GOTO(parse_out, rc);
1180
1181         rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1182 parse_out:
1183         rc2 = llog_close(llh);
1184         if (rc == 0)
1185                 rc = rc2;
1186
1187         LCONSOLE_INFO("End config log %s\n", name);
1188         RETURN(rc);
1189
1190 }
1191
1192 /* Cleanup and detach */
1193 int class_manual_cleanup(struct obd_device *obd)
1194 {
1195         struct lustre_cfg *lcfg;
1196         struct lustre_cfg_bufs bufs;
1197         int rc;
1198         char flags[3]="";
1199         ENTRY;
1200
1201         if (!obd) {
1202                 CERROR("empty cleanup\n");
1203                 RETURN(-EALREADY);
1204         }
1205
1206         if (obd->obd_force)
1207                 strcat(flags, "F");
1208         if (obd->obd_fail)
1209                 strcat(flags, "A");
1210
1211         CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1212                obd->obd_name, flags);
1213
1214         lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1215         lustre_cfg_bufs_set_string(&bufs, 1, flags);
1216         lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1217
1218         rc = class_process_config(lcfg);
1219         if (rc) {
1220                 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1221                 GOTO(out, rc);
1222         }
1223
1224         /* the lcfg is almost the same for both ops */
1225         lcfg->lcfg_command = LCFG_DETACH;
1226         rc = class_process_config(lcfg);
1227         if (rc)
1228                 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1229 out:
1230         lustre_cfg_free(lcfg);
1231         RETURN(rc);
1232 }
1233