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  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/obdclass/obd_config.c
  37  *
  38  * Config API
  39  */
  40
  41 #define DEBUG_SUBSYSTEM S_CLASS
  42 #ifdef __KERNEL__
  43 #include <obd_class.h>
  44 #include <linux/string.h>
  45 #else
  46 #include <liblustre.h>
  47 #include <obd_class.h>
  48 #include <obd.h>
  49 #endif
  50 #include <lustre_log.h>
  51 #include <lprocfs_status.h>
  52 #include <libcfs/list.h>
  53 #include <lustre_param.h>
  54 #include <class_hash.h>
  55
  56 extern struct lustre_hash_operations uuid_hash_operations;
  57 extern struct lustre_hash_operations nid_hash_operations;
  58
  59 /*********** string parsing utils *********/
  60
  61 /* returns 0 if we find this key in the buffer, else 1 */
  62 int class_find_param(char *buf, char *key, char **valp)
  63 {
  64         char *ptr;
  65
  66         if (!buf)
  67                 return 1;
  68
  69         if ((ptr = strstr(buf, key)) == NULL)
  70                 return 1;
  71
  72         if (valp)
  73                 *valp = ptr + strlen(key);
  74
  75         return 0;
  76 }
  77
  78 /* returns 0 if this is the first key in the buffer, else 1.
  79    valp points to first char after key. */
  80 int class_match_param(char *buf, char *key, char **valp)
  81 {
  82         if (!buf)
  83                 return 1;
  84
  85         if (memcmp(buf, key, strlen(key)) != 0)
  86                 return 1;
  87
  88         if (valp)
  89                 *valp = buf + strlen(key);
  90
  91         return 0;
  92 }
  93
  94 /* 0 is good nid,
  95    1 not found
  96    < 0 error
  97    endh is set to next separator */
  98 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
  99 {
 100         char tmp, *endp;
 101
 102         if (!buf)
 103                 return 1;
 104         while (*buf == ',' || *buf == ':')
 105                 buf++;
 106         if (*buf == ' ' || *buf == '/' || *buf == '\0')
 107                 return 1;
 108
 109         /* nid separators or end of nids */
 110         endp = strpbrk(buf, ",: /");
 111         if (endp == NULL)
 112                 endp = buf + strlen(buf);
 113
 114         tmp = *endp;
 115         *endp = '\0';
 116         *nid = libcfs_str2nid(buf);
 117         if (*nid == LNET_NID_ANY) {
 118                 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
 119                 *endp = tmp;
 120                 return -EINVAL;
 121         }
 122         *endp = tmp;
 123
 124         if (endh)
 125                 *endh = endp;
 126         CDEBUG(D_INFO, "Nid %s\n", libcfs_nid2str(*nid));
 127         return 0;
 128 }
 129
 130 EXPORT_SYMBOL(class_find_param);
 131 EXPORT_SYMBOL(class_match_param);
 132 EXPORT_SYMBOL(class_parse_nid);
 133
 134 /********************** class fns **********************/
 135
 136 /**
 137  * Create a new device and set the type, name and uuid.  If successful, the new
 138  * device can be accessed by either name or uuid.
 139  */
 140 int class_attach(struct lustre_cfg *lcfg)
 141 {
 142         struct obd_device *obd = NULL;
 143         char *typename, *name, *uuid;
 144         int rc, len;
 145         ENTRY;
 146
 147         if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
 148                 CERROR("No type passed!\n");
 149                 RETURN(-EINVAL);
 150         }
 151         typename = lustre_cfg_string(lcfg, 1);
 152
 153         if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
 154                 CERROR("No name passed!\n");
 155                 RETURN(-EINVAL);
 156         }
 157         name = lustre_cfg_string(lcfg, 0);
 158
 159         if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
 160                 CERROR("No UUID passed!\n");
 161                 RETURN(-EINVAL);
 162         }
 163         uuid = lustre_cfg_string(lcfg, 2);
 164
 165         CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
 166                MKSTR(typename), MKSTR(name), MKSTR(uuid));
 167
 168         obd = class_newdev(typename, name);
 169         if (IS_ERR(obd)) {
 170                 /* Already exists or out of obds */
 171                 rc = PTR_ERR(obd);
 172                 obd = NULL;
 173                 CERROR("Cannot create device %s of type %s : %d\n",
 174                        name, typename, rc);
 175                 GOTO(out, rc);
 176         }
 177         LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
 178                  name, typename);
 179         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
 180                  "obd %p obd_magic %08X != %08X\n",
 181                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 182         LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, "%p obd_name %s != %s\n",
 183                  obd, obd->obd_name, name);
 184
 185         rwlock_init(&obd->obd_pool_lock);
 186         obd->obd_pool_limit = 0;
 187         obd->obd_pool_slv = 0;
 188
 189         CFS_INIT_LIST_HEAD(&obd->obd_exports);
 190         CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
 191         CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
 192         spin_lock_init(&obd->obd_nid_lock);
 193         spin_lock_init(&obd->obd_dev_lock);
 194         sema_init(&obd->obd_dev_sem, 1);
 195         spin_lock_init(&obd->obd_osfs_lock);
 196         /* obd->obd_osfs_age must be set to a value in the distant
 197          * past to guarantee a fresh statfs is fetched on mount. */
 198         obd->obd_osfs_age = cfs_time_shift_64(-1000);
 199
 200         /* XXX belongs in setup not attach  */
 201         /* recovery data */
 202         cfs_init_timer(&obd->obd_recovery_timer);
 203         spin_lock_init(&obd->obd_processing_task_lock);
 204         cfs_waitq_init(&obd->obd_next_transno_waitq);
 205         cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
 206         CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
 207         CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
 208         CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
 209
 210         llog_group_init(&obd->obd_olg, OBD_LLOG_GROUP);
 211
 212         spin_lock_init(&obd->obd_uncommitted_replies_lock);
 213         CFS_INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
 214
 215         len = strlen(uuid);
 216         if (len >= sizeof(obd->obd_uuid)) {
 217                 CERROR("uuid must be < %d bytes long\n",
 218                        (int)sizeof(obd->obd_uuid));
 219                 GOTO(out, rc = -EINVAL);
 220         }
 221         memcpy(obd->obd_uuid.uuid, uuid, len);
 222
 223         /* do the attach */
 224         if (OBP(obd, attach)) {
 225                 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
 226                 if (rc)
 227                         GOTO(out, rc = -EINVAL);
 228         }
 229
 230         /* Detach drops this */
 231         spin_lock(&obd->obd_dev_lock);
 232         atomic_set(&obd->obd_refcount, 1);
 233         spin_unlock(&obd->obd_dev_lock);
 234
 235         obd->obd_attached = 1;
 236         CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
 237                obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
 238         RETURN(0);
 239  out:
 240         if (obd != NULL) {
 241                 class_release_dev(obd);
 242         }
 243         return rc;
 244 }
 245
 246 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 247 {
 248         int err = 0;
 249         struct obd_export *exp;
 250         ENTRY;
 251
 252         LASSERT(obd != NULL);
 253         LASSERTF(obd == class_num2obd(obd->obd_minor), "obd %p != obd_devs[%d] %p\n",
 254                  obd, obd->obd_minor, class_num2obd(obd->obd_minor));
 255         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, "obd %p obd_magic %08x != %08x\n",
 256                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 257
 258         /* have we attached a type to this device? */
 259         if (!obd->obd_attached) {
 260                 CERROR("Device %d not attached\n", obd->obd_minor);
 261                 RETURN(-ENODEV);
 262         }
 263
 264         if (obd->obd_set_up) {
 265                 CERROR("Device %d already setup (type %s)\n",
 266                        obd->obd_minor, obd->obd_type->typ_name);
 267                 RETURN(-EEXIST);
 268         }
 269
 270         /* is someone else setting us up right now? (attach inits spinlock) */
 271         spin_lock(&obd->obd_dev_lock);
 272         if (obd->obd_starting) {
 273                 spin_unlock(&obd->obd_dev_lock);
 274                 CERROR("Device %d setup in progress (type %s)\n",
 275                        obd->obd_minor, obd->obd_type->typ_name);
 276                 RETURN(-EEXIST);
 277         }
 278         /* just leave this on forever.  I can't use obd_set_up here because
 279            other fns check that status, and we're not actually set up yet. */
 280         obd->obd_starting = 1;
 281         spin_unlock(&obd->obd_dev_lock);
 282
 283         /* create an uuid-export hash body */
 284         err = lustre_hash_init(&obd->obd_uuid_hash_body, "UUID_HASH",
 285                                128, &uuid_hash_operations);
 286         if (err)
 287                 GOTO(err_hash, err);
 288
 289         /* create a nid-export hash body */
 290         err = lustre_hash_init(&obd->obd_nid_hash_body, "NID_HASH",
 291                                128, &nid_hash_operations);
 292         if (err)
 293                 GOTO(err_hash, err);
 294
 295         /* create a nid-stats hash body */
 296         err = lustre_hash_init(&obd->obd_nid_stats_hash_body, "NID_STATS",
 297                                128, &nid_stat_hash_operations);
 298         if (err)
 299                 GOTO(err_hash, err);
 300
 301         exp = class_new_export(obd, &obd->obd_uuid);
 302         if (IS_ERR(exp))
 303                 RETURN(PTR_ERR(exp));
 304
 305         obd->obd_self_export = exp;
 306         list_del_init(&exp->exp_obd_chain_timed);
 307         class_export_put(exp);
 308
 309         err = obd_setup(obd, lcfg);
 310         if (err)
 311                 GOTO(err_exp, err);
 312
 313         obd->obd_set_up = 1;
 314
 315         spin_lock(&obd->obd_dev_lock);
 316         /* cleanup drops this */
 317         class_incref(obd);
 318         spin_unlock(&obd->obd_dev_lock);
 319
 320         CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
 321                obd->obd_name, obd->obd_uuid.uuid);
 322
 323         RETURN(0);
 324
 325 err_exp:
 326         class_unlink_export(obd->obd_self_export);
 327         obd->obd_self_export = NULL;
 328 err_hash:
 329         lustre_hash_exit(&obd->obd_uuid_hash_body);
 330         lustre_hash_exit(&obd->obd_nid_hash_body);
 331         lustre_hash_exit(&obd->obd_nid_stats_hash_body);
 332         obd->obd_starting = 0;
 333         CERROR("setup %s failed (%d)\n", obd->obd_name, err);
 334         RETURN(err);
 335 }
 336
 337 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
 338 {
 339         ENTRY;
 340
 341         if (obd->obd_set_up) {
 342                 CERROR("OBD device %d still set up\n", obd->obd_minor);
 343                 RETURN(-EBUSY);
 344         }
 345
 346         spin_lock(&obd->obd_dev_lock);
 347         if (!obd->obd_attached) {
 348                 spin_unlock(&obd->obd_dev_lock);
 349                 CERROR("OBD device %d not attached\n", obd->obd_minor);
 350                 RETURN(-ENODEV);
 351         }
 352         obd->obd_attached = 0;
 353         spin_unlock(&obd->obd_dev_lock);
 354
 355         CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
 356                obd->obd_name, obd->obd_uuid.uuid);
 357
 358         class_decref(obd);
 359
 360         /* not strictly necessary, but cleans up eagerly */
 361         obd_zombie_impexp_cull();
 362
 363         RETURN(0);
 364 }
 365
 366 static void dump_exports(struct obd_device *obd)
 367 {
 368         struct obd_export *exp, *n;
 369
 370         list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
 371                 struct ptlrpc_reply_state *rs;
 372                 struct ptlrpc_reply_state *first_reply = NULL;
 373                 int                        nreplies = 0;
 374
 375                 list_for_each_entry (rs, &exp->exp_outstanding_replies,
 376                                      rs_exp_list) {
 377                         if (nreplies == 0)
 378                                 first_reply = rs;
 379                         nreplies++;
 380                 }
 381
 382                 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
 383                        obd->obd_name, exp, exp->exp_client_uuid.uuid,
 384                        obd_export_nid2str(exp),
 385                        atomic_read(&exp->exp_refcount),
 386                        exp->exp_failed, nreplies, first_reply,
 387                        nreplies > 3 ? "..." : "");
 388         }
 389 }
 390
 391 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
 392 {
 393         int err = 0;
 394         char *flag;
 395         ENTRY;
 396
 397         OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
 398
 399         if (!obd->obd_set_up) {
 400                 CERROR("Device %d not setup\n", obd->obd_minor);
 401                 RETURN(-ENODEV);
 402         }
 403
 404         spin_lock(&obd->obd_dev_lock);
 405         if (obd->obd_stopping) {
 406                 spin_unlock(&obd->obd_dev_lock);
 407                 CERROR("OBD %d already stopping\n", obd->obd_minor);
 408                 RETURN(-ENODEV);
 409         }
 410         /* Leave this on forever */
 411         obd->obd_stopping = 1;
 412         spin_unlock(&obd->obd_dev_lock);
 413
 414         if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
 415                 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
 416                         switch (*flag) {
 417                         case 'F':
 418                                 obd->obd_force = 1;
 419                                 break;
 420                         case 'A':
 421                                 LCONSOLE_WARN("Failing over %s\n",
 422                                               obd->obd_name);
 423                                 obd->obd_fail = 1;
 424                                 obd->obd_no_transno = 1;
 425                                 obd->obd_no_recov = 1;
 426                                 /* Set the obd readonly if we can */
 427                                 if (OBP(obd, iocontrol))
 428                                         obd_iocontrol(OBD_IOC_SET_READONLY,
 429                                                       obd->obd_self_export,
 430                                                       0, NULL, NULL);
 431                                 break;
 432                         default:
 433                                 CERROR("unrecognised flag '%c'\n",
 434                                        *flag);
 435                         }
 436         }
 437
 438         /* The three references that should be remaining are the
 439          * obd_self_export and the attach and setup references. */
 440         if (atomic_read(&obd->obd_refcount) > 3) {
 441 #if 0           /* We should never fail to cleanup with mountconf */
 442                 if (!(obd->obd_fail || obd->obd_force)) {
 443                         CERROR("OBD %s is still busy with %d references\n"
 444                                "You should stop active file system users,"
 445                                " or use the --force option to cleanup.\n",
 446                                obd->obd_name, atomic_read(&obd->obd_refcount));
 447                         dump_exports(obd);
 448                         /* Allow a failed cleanup to try again. */
 449                         obd->obd_stopping = 0;
 450                 }
 451 #endif
 452                 /* refcounf - 3 might be the number of real exports
 453                    (excluding self export). But class_incref is called
 454                    by other things as well, so don't count on it. */
 455                 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
 456                        obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
 457                 dump_exports(obd);
 458                 class_disconnect_exports(obd);
 459         }
 460         LASSERT(obd->obd_self_export);
 461
 462         /* destroy an uuid-export hash body */
 463         lustre_hash_exit(&obd->obd_uuid_hash_body);
 464
 465         /* destroy a nid-export hash body */
 466         lustre_hash_exit(&obd->obd_nid_hash_body);
 467
 468         /* destroy a nid-stats hash body */
 469         lustre_hash_exit(&obd->obd_nid_stats_hash_body);
 470
 471         /* Precleanup, we must make sure all exports get destroyed. */
 472         err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
 473         if (err)
 474                 CERROR("Precleanup %s returned %d\n",
 475                        obd->obd_name, err);
 476         class_decref(obd);
 477         obd->obd_set_up = 0;
 478         RETURN(0);
 479 }
 480
 481 struct obd_device *class_incref(struct obd_device *obd)
 482 {
 483         atomic_inc(&obd->obd_refcount);
 484         CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
 485                atomic_read(&obd->obd_refcount));
 486
 487         return obd;
 488 }
 489
 490 void class_decref(struct obd_device *obd)
 491 {
 492         int err;
 493         int refs;
 494
 495         spin_lock(&obd->obd_dev_lock);
 496         atomic_dec(&obd->obd_refcount);
 497         refs = atomic_read(&obd->obd_refcount);
 498         spin_unlock(&obd->obd_dev_lock);
 499
 500         CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
 501
 502         if ((refs == 1) && obd->obd_stopping) {
 503                 /* All exports have been destroyed; there should
 504                    be no more in-progress ops by this point.*/
 505
 506                 spin_lock(&obd->obd_self_export->exp_lock);
 507                 obd->obd_self_export->exp_flags |=
 508                         (obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 509                         (obd->obd_force ? OBD_OPT_FORCE : 0);
 510                 spin_unlock(&obd->obd_self_export->exp_lock);
 511
 512                 /* note that we'll recurse into class_decref again */
 513                 class_unlink_export(obd->obd_self_export);
 514                 return;
 515         }
 516
 517         if (refs == 0) {
 518                 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
 519                        obd->obd_name, obd->obd_uuid.uuid);
 520                 LASSERT(!obd->obd_attached);
 521                 if (obd->obd_stopping) {
 522                         /* If we're not stopping, we were never set up */
 523                         err = obd_cleanup(obd);
 524                         if (err)
 525                                 CERROR("Cleanup %s returned %d\n",
 526                                        obd->obd_name, err);
 527                 }
 528                 if (OBP(obd, detach)) {
 529                         err = OBP(obd,detach)(obd);
 530                         if (err)
 531                                 CERROR("Detach returned %d\n", err);
 532                 }
 533                 class_release_dev(obd);
 534         }
 535 }
 536
 537 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 538 {
 539         struct obd_import *imp;
 540         struct obd_uuid uuid;
 541         int rc;
 542         ENTRY;
 543
 544         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 545             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 546                 CERROR("invalid conn_uuid\n");
 547                 RETURN(-EINVAL);
 548         }
 549         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 550             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
 551             strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
 552                 CERROR("can't add connection on non-client dev\n");
 553                 RETURN(-EINVAL);
 554         }
 555
 556         imp = obd->u.cli.cl_import;
 557         if (!imp) {
 558                 CERROR("try to add conn on immature client dev\n");
 559                 RETURN(-EINVAL);
 560         }
 561
 562         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 563         rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
 564
 565         RETURN(rc);
 566 }
 567
 568 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 569 {
 570         struct obd_import *imp;
 571         struct obd_uuid uuid;
 572         int rc;
 573         ENTRY;
 574
 575         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 576             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 577                 CERROR("invalid conn_uuid\n");
 578                 RETURN(-EINVAL);
 579         }
 580         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 581             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 582                 CERROR("can't del connection on non-client dev\n");
 583                 RETURN(-EINVAL);
 584         }
 585
 586         imp = obd->u.cli.cl_import;
 587         if (!imp) {
 588                 CERROR("try to del conn on immature client dev\n");
 589                 RETURN(-EINVAL);
 590         }
 591
 592         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 593         rc = obd_del_conn(imp, &uuid);
 594
 595         RETURN(rc);
 596 }
 597
 598 CFS_LIST_HEAD(lustre_profile_list);
 599
 600 struct lustre_profile *class_get_profile(const char * prof)
 601 {
 602         struct lustre_profile *lprof;
 603
 604         ENTRY;
 605         list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
 606                 if (!strcmp(lprof->lp_profile, prof)) {
 607                         RETURN(lprof);
 608                 }
 609         }
 610         RETURN(NULL);
 611 }
 612
 613 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
 614                       int mdclen, char *mdc)
 615 {
 616         struct lustre_profile *lprof;
 617         int err = 0;
 618         ENTRY;
 619
 620         CDEBUG(D_CONFIG, "Add profile %s\n", prof);
 621
 622         OBD_ALLOC(lprof, sizeof(*lprof));
 623         if (lprof == NULL)
 624                 RETURN(-ENOMEM);
 625         CFS_INIT_LIST_HEAD(&lprof->lp_list);
 626
 627         LASSERT(proflen == (strlen(prof) + 1));
 628         OBD_ALLOC(lprof->lp_profile, proflen);
 629         if (lprof->lp_profile == NULL)
 630                 GOTO(out, err = -ENOMEM);
 631         memcpy(lprof->lp_profile, prof, proflen);
 632
 633         LASSERT(osclen == (strlen(osc) + 1));
 634         OBD_ALLOC(lprof->lp_dt, osclen);
 635         if (lprof->lp_dt == NULL)
 636                 GOTO(out, err = -ENOMEM);
 637         memcpy(lprof->lp_dt, osc, osclen);
 638
 639         if (mdclen > 0) {
 640                 LASSERT(mdclen == (strlen(mdc) + 1));
 641                 OBD_ALLOC(lprof->lp_md, mdclen);
 642                 if (lprof->lp_md == NULL)
 643                         GOTO(out, err = -ENOMEM);
 644                 memcpy(lprof->lp_md, mdc, mdclen);
 645         }
 646
 647         list_add(&lprof->lp_list, &lustre_profile_list);
 648         RETURN(err);
 649
 650 out:
 651         if (lprof->lp_md)
 652                 OBD_FREE(lprof->lp_md, mdclen);
 653         if (lprof->lp_dt)
 654                 OBD_FREE(lprof->lp_dt, osclen);
 655         if (lprof->lp_profile)
 656                 OBD_FREE(lprof->lp_profile, proflen);
 657         OBD_FREE(lprof, sizeof(*lprof));
 658         RETURN(err);
 659 }
 660
 661 void class_del_profile(const char *prof)
 662 {
 663         struct lustre_profile *lprof;
 664         ENTRY;
 665
 666         CDEBUG(D_CONFIG, "Del profile %s\n", prof);
 667
 668         lprof = class_get_profile(prof);
 669         if (lprof) {
 670                 list_del(&lprof->lp_list);
 671                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 672                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 673                 if (lprof->lp_md)
 674                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 675                 OBD_FREE(lprof, sizeof *lprof);
 676         }
 677         EXIT;
 678 }
 679
 680 /* COMPAT_146 */
 681 void class_del_profiles(void)
 682 {
 683         struct lustre_profile *lprof, *n;
 684         ENTRY;
 685
 686         list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
 687                 list_del(&lprof->lp_list);
 688                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 689                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 690                 if (lprof->lp_md)
 691                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 692                 OBD_FREE(lprof, sizeof *lprof);
 693         }
 694         EXIT;
 695 }
 696
 697 /* We can't call ll_process_config directly because it lives in a module that
 698    must be loaded after this one. */
 699 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
 700
 701 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
 702 {
 703         client_process_config = cpc;
 704 }
 705 EXPORT_SYMBOL(lustre_register_client_process_config);
 706
 707 int class_process_config(struct lustre_cfg *lcfg)
 708 {
 709         struct obd_device *obd;
 710         int err;
 711
 712         LASSERT(lcfg && !IS_ERR(lcfg));
 713         CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
 714
 715         /* Commands that don't need a device */
 716         switch(lcfg->lcfg_command) {
 717         case LCFG_ATTACH: {
 718                 err = class_attach(lcfg);
 719                 GOTO(out, err);
 720         }
 721         case LCFG_ADD_UUID: {
 722                 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
 723                        " (%s)\n", lustre_cfg_string(lcfg, 1),
 724                        lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
 725
 726                 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
 727                 GOTO(out, err);
 728         }
 729         case LCFG_DEL_UUID: {
 730                 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
 731                        (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
 732                        ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
 733
 734                 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
 735                 GOTO(out, err);
 736         }
 737         case LCFG_MOUNTOPT: {
 738                 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
 739                        lustre_cfg_string(lcfg, 1),
 740                        lustre_cfg_string(lcfg, 2),
 741                        lustre_cfg_string(lcfg, 3));
 742                 /* set these mount options somewhere, so ll_fill_super
 743                  * can find them. */
 744                 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
 745                                         lustre_cfg_string(lcfg, 1),
 746                                         LUSTRE_CFG_BUFLEN(lcfg, 2),
 747                                         lustre_cfg_string(lcfg, 2),
 748                                         LUSTRE_CFG_BUFLEN(lcfg, 3),
 749                                         lustre_cfg_string(lcfg, 3));
 750                 GOTO(out, err);
 751         }
 752         case LCFG_DEL_MOUNTOPT: {
 753                 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
 754                        lustre_cfg_string(lcfg, 1));
 755                 class_del_profile(lustre_cfg_string(lcfg, 1));
 756                 GOTO(out, err = 0);
 757         }
 758         case LCFG_SET_TIMEOUT: {
 759                 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
 760                        obd_timeout, lcfg->lcfg_num);
 761                 obd_timeout = max(lcfg->lcfg_num, 1U);
 762                 GOTO(out, err = 0);
 763         }
 764         case LCFG_SET_UPCALL: {
 765                 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
 766                 /* COMPAT_146 Don't fail on old configs */
 767                 GOTO(out, err = 0);
 768         }
 769         case LCFG_MARKER: {
 770                 struct cfg_marker *marker;
 771                 marker = lustre_cfg_buf(lcfg, 1);
 772                 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
 773                        marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
 774                 GOTO(out, err = 0);
 775         }
 776         case LCFG_PARAM: {
 777                 /* llite has no obd */
 778                 if ((class_match_param(lustre_cfg_string(lcfg, 1),
 779                                        PARAM_LLITE, 0) == 0) &&
 780                     client_process_config) {
 781                         err = (*client_process_config)(lcfg);
 782                         GOTO(out, err);
 783                 }
 784                 /* Fall through */
 785                 break;
 786         }
 787         }
 788
 789         /* Commands that require a device */
 790         obd = class_name2obd(lustre_cfg_string(lcfg, 0));
 791         if (obd == NULL) {
 792                 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
 793                         CERROR("this lcfg command requires a device name\n");
 794                 else
 795                         CERROR("no device for: %s\n",
 796                                lustre_cfg_string(lcfg, 0));
 797
 798                 GOTO(out, err = -EINVAL);
 799         }
 800
 801         switch(lcfg->lcfg_command) {
 802         case LCFG_SETUP: {
 803                 err = class_setup(obd, lcfg);
 804                 GOTO(out, err);
 805         }
 806         case LCFG_DETACH: {
 807                 err = class_detach(obd, lcfg);
 808                 GOTO(out, err = 0);
 809         }
 810         case LCFG_CLEANUP: {
 811                 err = class_cleanup(obd, lcfg);
 812                 GOTO(out, err = 0);
 813         }
 814         case LCFG_ADD_CONN: {
 815                 err = class_add_conn(obd, lcfg);
 816                 GOTO(out, err = 0);
 817         }
 818         case LCFG_DEL_CONN: {
 819                 err = class_del_conn(obd, lcfg);
 820                 GOTO(out, err = 0);
 821         }
 822         default: {
 823                 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
 824                 GOTO(out, err);
 825
 826         }
 827         }
 828 out:
 829         if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
 830                 CWARN("Ignoring error %d on optional command %#x\n", err,
 831                       lcfg->lcfg_command);
 832                 err = 0;
 833         }
 834         return err;
 835 }
 836
 837 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 838                              struct lustre_cfg *lcfg, void *data)
 839 {
 840 #ifdef __KERNEL__
 841         struct lprocfs_vars *var;
 842         char *key, *sval;
 843         int i, keylen, vallen;
 844         int matched = 0, j = 0;
 845         int rc = 0;
 846         ENTRY;
 847
 848         if (lcfg->lcfg_command != LCFG_PARAM) {
 849                 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
 850                 RETURN(-EINVAL);
 851         }
 852
 853         /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
 854            or   lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
 855            or   lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
 856         for (i = 1; i < lcfg->lcfg_bufcount; i++) {
 857                 key = lustre_cfg_buf(lcfg, i);
 858                 /* Strip off prefix */
 859                 class_match_param(key, prefix, &key);
 860                 sval = strchr(key, '=');
 861                 if (!sval || (*(sval + 1) == 0)) {
 862                         CERROR("Can't parse param %s\n", key);
 863                         /* rc = -EINVAL; continue parsing other params */
 864                         continue;
 865                 }
 866                 keylen = sval - key;
 867                 sval++;
 868                 vallen = strlen(sval);
 869                 matched = 0;
 870                 j = 0;
 871                 /* Search proc entries */
 872                 while (lvars[j].name) {
 873                         var = &lvars[j];
 874                         if (class_match_param(key, (char *)var->name, 0) == 0 &&
 875                             keylen == strlen(var->name)) {
 876                                 matched++;
 877                                 rc = -EROFS;
 878                                 if (var->write_fptr) {
 879                                         mm_segment_t oldfs;
 880                                         oldfs = get_fs();
 881                                         set_fs(KERNEL_DS);
 882                                         rc = (var->write_fptr)(NULL, sval,
 883                                                                vallen, data);
 884                                         set_fs(oldfs);
 885                                 }
 886                                 if (rc < 0)
 887                                         CERROR("writing proc entry %s err %d\n",
 888                                                var->name, rc);
 889                                 break;
 890                         }
 891                         j++;
 892                 }
 893                 if (!matched) {
 894                         CERROR("%s: unknown param %s\n",
 895                                (char *)lustre_cfg_string(lcfg, 0), key);
 896                         /* rc = -EINVAL;        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.lpcd_first_idx = cfg->cfg_last_idx;
1086         cd.lpcd_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.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1092
1093         if (cfg)
1094                 cfg->cfg_last_idx = cd.lpcd_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 }