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
  42 /*********** string parsing utils *********/
  43
  44 /* returns 0 if we find this key in the buffer, else 1 */
  45 int class_find_param(char *buf, char *key, char **valp)
  46 {
  47         char *ptr;
  48
  49         if (!buf)
  50                 return 1;
  51
  52         if ((ptr = strstr(buf, key)) == NULL)
  53                 return 1;
  54
  55         if (valp)
  56                 *valp = ptr + strlen(key);
  57
  58         return 0;
  59 }
  60
  61 /* returns 0 if this is the first key in the buffer, else 1.
  62    valp points to first char after key. */
  63 int class_match_param(char *buf, char *key, char **valp)
  64 {
  65         if (!buf)
  66                 return 1;
  67
  68         if (memcmp(buf, key, strlen(key)) != 0)
  69                 return 1;
  70
  71         if (valp)
  72                 *valp = buf + strlen(key);
  73
  74         return 0;
  75 }
  76
  77 /* 0 is good nid,
  78    1 not found
  79    < 0 error
  80    endh is set to next separator */
  81 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
  82 {
  83         char tmp, *endp;
  84
  85         if (!buf)
  86                 return 1;
  87         while (*buf == ',' || *buf == ':')
  88                 buf++;
  89         if (*buf == ' ' || *buf == '/' || *buf == '\0')
  90                 return 1;
  91
  92         /* nid separators or end of nids */
  93         endp = strpbrk(buf, ",: /");
  94         if (endp == NULL)
  95                 endp = buf + strlen(buf);
  96
  97         tmp = *endp;
  98         *endp = '\0';
  99         *nid = libcfs_str2nid(buf);
 100         if (*nid == LNET_NID_ANY) {
 101                 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
 102                 *endp = tmp;
 103                 return -EINVAL;
 104         }
 105         *endp = tmp;
 106
 107         if (endh)
 108                 *endh = endp;
 109         CDEBUG(D_INFO, "Nid %s\n", libcfs_nid2str(*nid));
 110         return 0;
 111 }
 112
 113 EXPORT_SYMBOL(class_find_param);
 114 EXPORT_SYMBOL(class_match_param);
 115 EXPORT_SYMBOL(class_parse_nid);
 116
 117 /********************** class fns **********************/
 118
 119 /* Create a new device and set the type, name and uuid.  If
 120  * successful, the new device can be accessed by either name or uuid.
 121  */
 122 int class_attach(struct lustre_cfg *lcfg)
 123 {
 124         struct obd_device *obd = NULL;
 125         char *typename, *name, *uuid;
 126         int rc, len;
 127         ENTRY;
 128
 129         if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
 130                 CERROR("No type passed!\n");
 131                 RETURN(-EINVAL);
 132         }
 133         typename = lustre_cfg_string(lcfg, 1);
 134
 135         if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
 136                 CERROR("No name passed!\n");
 137                 RETURN(-EINVAL);
 138         }
 139         name = lustre_cfg_string(lcfg, 0);
 140
 141         if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
 142                 CERROR("No UUID passed!\n");
 143                 RETURN(-EINVAL);
 144         }
 145         uuid = lustre_cfg_string(lcfg, 2);
 146
 147         CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
 148                MKSTR(typename), MKSTR(name), MKSTR(uuid));
 149
 150         obd = class_newdev(typename, name);
 151         if (IS_ERR(obd)) {
 152                 /* Already exists or out of obds */
 153                 rc = PTR_ERR(obd);
 154                 obd = NULL;
 155                 CERROR("Cannot create device %s of type %s : %d\n",
 156                        name, typename, rc);
 157                 GOTO(out, rc);
 158         }
 159         LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
 160                  name, typename);
 161         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
 162                  "obd %p obd_magic %08X != %08X\n",
 163                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 164         LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, "%p obd_name %s != %s\n",
 165                  obd, obd->obd_name, name);
 166
 167         CFS_INIT_LIST_HEAD(&obd->obd_exports);
 168         CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
 169         spin_lock_init(&obd->obd_dev_lock);
 170         sema_init(&obd->obd_dev_sem, 1);
 171         sema_init(&obd->obd_proc_exp_sem, 1);
 172         spin_lock_init(&obd->obd_osfs_lock);
 173         /* obd->obd_osfs_age must be set to a value in the distant
 174          * past to guarantee a fresh statfs is fetched on mount. */
 175         obd->obd_osfs_age = cfs_time_shift_64(-1000);
 176
 177         /* XXX belongs in setup not attach  */
 178         /* recovery data */
 179         cfs_init_timer(&obd->obd_recovery_timer);
 180         spin_lock_init(&obd->obd_processing_task_lock);
 181         cfs_waitq_init(&obd->obd_next_transno_waitq);
 182         cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
 183         CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
 184         CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
 185         CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
 186
 187         spin_lock_init(&obd->obd_uncommitted_replies_lock);
 188         CFS_INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
 189
 190         len = strlen(uuid);
 191         if (len >= sizeof(obd->obd_uuid)) {
 192                 CERROR("uuid must be < "LPSZ" bytes long\n",
 193                        sizeof(obd->obd_uuid));
 194                 GOTO(out, rc = -EINVAL);
 195         }
 196         memcpy(obd->obd_uuid.uuid, uuid, len);
 197
 198         /* do the attach */
 199         if (OBP(obd, attach)) {
 200                 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
 201                 if (rc)
 202                         GOTO(out, rc = -EINVAL);
 203         }
 204
 205         /* Detach drops this */
 206         spin_lock(&obd->obd_dev_lock);
 207         atomic_set(&obd->obd_refcount, 1);
 208         spin_unlock(&obd->obd_dev_lock);
 209
 210         obd->obd_attached = 1;
 211         CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
 212                obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
 213         RETURN(0);
 214  out:
 215         if (obd != NULL) {
 216                 class_release_dev(obd);
 217         }
 218         return rc;
 219 }
 220
 221 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 222 {
 223         int err = 0;
 224         struct obd_export *exp;
 225         ENTRY;
 226
 227         LASSERT(obd != NULL);
 228         LASSERTF(obd == class_num2obd(obd->obd_minor), "obd %p != obd_devs[%d] %p\n",
 229                  obd, obd->obd_minor, class_num2obd(obd->obd_minor));
 230         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, "obd %p obd_magic %08x != %08x\n",
 231                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 232
 233         /* have we attached a type to this device? */
 234         if (!obd->obd_attached) {
 235                 CERROR("Device %d not attached\n", obd->obd_minor);
 236                 RETURN(-ENODEV);
 237         }
 238
 239         if (obd->obd_set_up) {
 240                 CERROR("Device %d already setup (type %s)\n",
 241                        obd->obd_minor, obd->obd_type->typ_name);
 242                 RETURN(-EEXIST);
 243         }
 244
 245         /* is someone else setting us up right now? (attach inits spinlock) */
 246         spin_lock(&obd->obd_dev_lock);
 247         if (obd->obd_starting) {
 248                 spin_unlock(&obd->obd_dev_lock);
 249                 CERROR("Device %d setup in progress (type %s)\n",
 250                        obd->obd_minor, obd->obd_type->typ_name);
 251                 RETURN(-EEXIST);
 252         }
 253         /* just leave this on forever.  I can't use obd_set_up here because
 254            other fns check that status, and we're not actually set up yet. */
 255         obd->obd_starting = 1;
 256         spin_unlock(&obd->obd_dev_lock);
 257
 258         exp = class_new_export(obd, &obd->obd_uuid);
 259         if (IS_ERR(exp))
 260                 RETURN(PTR_ERR(exp));
 261         obd->obd_self_export = exp;
 262         list_del_init(&exp->exp_obd_chain_timed);
 263         class_export_put(exp);
 264
 265         err = obd_setup(obd, lcfg);
 266         if (err)
 267                 GOTO(err_exp, err);
 268
 269         obd->obd_set_up = 1;
 270
 271         spin_lock(&obd->obd_dev_lock);
 272         /* cleanup drops this */
 273         class_incref(obd);
 274         spin_unlock(&obd->obd_dev_lock);
 275
 276         CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
 277                obd->obd_name, obd->obd_uuid.uuid);
 278
 279         RETURN(0);
 280
 281 err_exp:
 282         CERROR("setup %s failed (%d)\n", obd->obd_name, err);
 283         class_unlink_export(obd->obd_self_export);
 284         obd->obd_self_export = NULL;
 285         obd->obd_starting = 0;
 286         RETURN(err);
 287 }
 288
 289 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
 290 {
 291         ENTRY;
 292
 293         if (obd->obd_set_up) {
 294                 CERROR("OBD device %d still set up\n", obd->obd_minor);
 295                 RETURN(-EBUSY);
 296         }
 297
 298         spin_lock(&obd->obd_dev_lock);
 299         if (!obd->obd_attached) {
 300                 spin_unlock(&obd->obd_dev_lock);
 301                 CERROR("OBD device %d not attached\n", obd->obd_minor);
 302                 RETURN(-ENODEV);
 303         }
 304         obd->obd_attached = 0;
 305         spin_unlock(&obd->obd_dev_lock);
 306
 307         CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
 308                obd->obd_name, obd->obd_uuid.uuid);
 309
 310         class_decref(obd);
 311
 312         /* not strictly necessary, but cleans up eagerly */
 313         obd_zombie_impexp_cull();
 314
 315         RETURN(0);
 316 }
 317
 318 static void dump_exports(struct obd_device *obd)
 319 {
 320         struct obd_export *exp, *n;
 321
 322         list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
 323                 struct ptlrpc_reply_state *rs;
 324                 struct ptlrpc_reply_state *first_reply = NULL;
 325                 int                        nreplies = 0;
 326
 327                 list_for_each_entry (rs, &exp->exp_outstanding_replies,
 328                                      rs_exp_list) {
 329                         if (nreplies == 0)
 330                                 first_reply = rs;
 331                         nreplies++;
 332                 }
 333
 334                 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
 335                        obd->obd_name, exp, exp->exp_client_uuid.uuid,
 336                        obd_export_nid2str(exp),
 337                        atomic_read(&exp->exp_refcount),
 338                        exp->exp_failed, nreplies, first_reply,
 339                        nreplies > 3 ? "..." : "");
 340         }
 341 }
 342
 343 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
 344 {
 345         int err = 0;
 346         char *flag;
 347         ENTRY;
 348
 349         OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
 350
 351         if (!obd->obd_set_up) {
 352                 CERROR("Device %d not setup\n", obd->obd_minor);
 353                 RETURN(-ENODEV);
 354         }
 355
 356         spin_lock(&obd->obd_dev_lock);
 357         if (obd->obd_stopping) {
 358                 spin_unlock(&obd->obd_dev_lock);
 359                 CERROR("OBD %d already stopping\n", obd->obd_minor);
 360                 RETURN(-ENODEV);
 361         }
 362         /* Leave this on forever */
 363         obd->obd_stopping = 1;
 364         spin_unlock(&obd->obd_dev_lock);
 365
 366         if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
 367                 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
 368                         switch (*flag) {
 369                         case 'F':
 370                                 obd->obd_force = 1;
 371                                 break;
 372                         case 'A':
 373                                 LCONSOLE_WARN("Failing over %s\n",
 374                                               obd->obd_name);
 375                                 obd->obd_fail = 1;
 376                                 obd->obd_no_transno = 1;
 377                                 obd->obd_no_recov = 1;
 378                                 /* Set the obd readonly if we can */
 379                                 if (OBP(obd, iocontrol))
 380                                         obd_iocontrol(OBD_IOC_SET_READONLY,
 381                                                       obd->obd_self_export,
 382                                                       0, NULL, NULL);
 383                                 break;
 384                         default:
 385                                 CERROR("unrecognised flag '%c'\n",
 386                                        *flag);
 387                         }
 388         }
 389
 390         /* The three references that should be remaining are the
 391          * obd_self_export and the attach and setup references. */
 392         if (atomic_read(&obd->obd_refcount) > 3) {
 393 #if 0           /* We should never fail to cleanup with mountconf */
 394                 if (!(obd->obd_fail || obd->obd_force)) {
 395                         CERROR("OBD %s is still busy with %d references\n"
 396                                "You should stop active file system users,"
 397                                " or use the --force option to cleanup.\n",
 398                                obd->obd_name, atomic_read(&obd->obd_refcount));
 399                         dump_exports(obd);
 400                         /* Allow a failed cleanup to try again. */
 401                         obd->obd_stopping = 0;
 402                 }
 403 #endif
 404                 /* refcounf - 3 might be the number of real exports
 405                    (excluding self export). But class_incref is called
 406                    by other things as well, so don't count on it. */
 407                 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
 408                        obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
 409                 dump_exports(obd);
 410                 class_disconnect_exports(obd);
 411         }
 412         LASSERT(obd->obd_self_export);
 413
 414         /* Precleanup stage 1, we must make sure all exports (other than the
 415            self-export) get destroyed. */
 416         err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
 417         if (err)
 418                 CERROR("Precleanup %s returned %d\n",
 419                        obd->obd_name, err);
 420
 421         class_decref(obd);
 422         obd->obd_set_up = 0;
 423         RETURN(0);
 424 }
 425
 426 struct obd_device *class_incref(struct obd_device *obd)
 427 {
 428         atomic_inc(&obd->obd_refcount);
 429         CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
 430                atomic_read(&obd->obd_refcount));
 431
 432         return obd;
 433 }
 434
 435 void class_decref(struct obd_device *obd)
 436 {
 437         int err;
 438         int refs;
 439
 440         spin_lock(&obd->obd_dev_lock);
 441         atomic_dec(&obd->obd_refcount);
 442         refs = atomic_read(&obd->obd_refcount);
 443         spin_unlock(&obd->obd_dev_lock);
 444
 445         CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
 446
 447         if ((refs == 1) && obd->obd_stopping) {
 448                 /* All exports (other than the self-export) have been
 449                    destroyed; there should be no more in-progress ops
 450                    by this point.*/
 451                 /* if we're not stopping, we didn't finish setup */
 452                 /* Precleanup stage 2,  do other type-specific
 453                    cleanup requiring the self-export. */
 454                 err = obd_precleanup(obd, OBD_CLEANUP_SELF_EXP);
 455                 if (err)
 456                         CERROR("Precleanup %s returned %d\n",
 457                                obd->obd_name, err);
 458
 459                 spin_lock(&obd->obd_self_export->exp_lock);
 460                 obd->obd_self_export->exp_flags |=
 461                         (obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 462                         (obd->obd_force ? OBD_OPT_FORCE : 0);
 463                 spin_unlock(&obd->obd_self_export->exp_lock);
 464
 465                 /* note that we'll recurse into class_decref again */
 466                 class_unlink_export(obd->obd_self_export);
 467                 return;
 468         }
 469
 470         if (refs == 0) {
 471                 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
 472                        obd->obd_name, obd->obd_uuid.uuid);
 473                 LASSERT(!obd->obd_attached);
 474                 if (obd->obd_stopping) {
 475                         /* If we're not stopping, we were never set up */
 476                         err = obd_cleanup(obd);
 477                         if (err)
 478                                 CERROR("Cleanup %s returned %d\n",
 479                                        obd->obd_name, err);
 480                 }
 481                 if (OBP(obd, detach)) {
 482                         err = OBP(obd,detach)(obd);
 483                         if (err)
 484                                 CERROR("Detach returned %d\n", err);
 485                 }
 486                 class_release_dev(obd);
 487         }
 488 }
 489
 490 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 491 {
 492         struct obd_import *imp;
 493         struct obd_uuid uuid;
 494         int rc;
 495         ENTRY;
 496
 497         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 498             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 499                 CERROR("invalid conn_uuid\n");
 500                 RETURN(-EINVAL);
 501         }
 502         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 503             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
 504             strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
 505                 CERROR("can't add connection on non-client dev\n");
 506                 RETURN(-EINVAL);
 507         }
 508
 509         imp = obd->u.cli.cl_import;
 510         if (!imp) {
 511                 CERROR("try to add conn on immature client dev\n");
 512                 RETURN(-EINVAL);
 513         }
 514
 515         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 516         rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
 517
 518         RETURN(rc);
 519 }
 520
 521 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 522 {
 523         struct obd_import *imp;
 524         struct obd_uuid uuid;
 525         int rc;
 526         ENTRY;
 527
 528         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 529             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 530                 CERROR("invalid conn_uuid\n");
 531                 RETURN(-EINVAL);
 532         }
 533         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 534             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 535                 CERROR("can't del connection on non-client dev\n");
 536                 RETURN(-EINVAL);
 537         }
 538
 539         imp = obd->u.cli.cl_import;
 540         if (!imp) {
 541                 CERROR("try to del conn on immature client dev\n");
 542                 RETURN(-EINVAL);
 543         }
 544
 545         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 546         rc = obd_del_conn(imp, &uuid);
 547
 548         RETURN(rc);
 549 }
 550
 551 int class_sec_flavor(struct obd_device *obd, struct lustre_cfg *lcfg)
 552 {
 553         struct sec_flavor_config *conf;
 554         ENTRY;
 555
 556         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 557             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 558                 CERROR("Can't set security flavor on obd %s\n",
 559                        obd->obd_type->typ_name);
 560                 RETURN(-EINVAL);
 561         }
 562
 563         if (LUSTRE_CFG_BUFLEN(lcfg, 1) != sizeof(*conf)) {
 564                 CERROR("invalid data\n");
 565                 RETURN(-EINVAL);
 566         }
 567
 568         conf = &obd->u.cli.cl_sec_conf;
 569         memcpy(conf, lustre_cfg_buf(lcfg, 1), sizeof(*conf));
 570
 571 #ifdef __BIG_ENDIAN
 572         __swab32s(&conf->sfc_rpc_flavor);
 573         __swab32s(&conf->sfc_bulk_csum);
 574         __swab32s(&conf->sfc_bulk_priv);
 575         __swab32s(&conf->sfc_flags);
 576 #endif
 577
 578         RETURN(0);
 579 }
 580
 581 CFS_LIST_HEAD(lustre_profile_list);
 582
 583 struct lustre_profile *class_get_profile(const char * prof)
 584 {
 585         struct lustre_profile *lprof;
 586
 587         ENTRY;
 588         list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
 589                 if (!strcmp(lprof->lp_profile, prof)) {
 590                         RETURN(lprof);
 591                 }
 592         }
 593         RETURN(NULL);
 594 }
 595
 596 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
 597                       int mdclen, char *mdc)
 598 {
 599         struct lustre_profile *lprof;
 600         int err = 0;
 601         ENTRY;
 602
 603         CDEBUG(D_CONFIG, "Add profile %s\n", prof);
 604
 605         OBD_ALLOC(lprof, sizeof(*lprof));
 606         if (lprof == NULL)
 607                 RETURN(-ENOMEM);
 608         CFS_INIT_LIST_HEAD(&lprof->lp_list);
 609
 610         LASSERT(proflen == (strlen(prof) + 1));
 611         OBD_ALLOC(lprof->lp_profile, proflen);
 612         if (lprof->lp_profile == NULL)
 613                 GOTO(out, err = -ENOMEM);
 614         memcpy(lprof->lp_profile, prof, proflen);
 615
 616         LASSERT(osclen == (strlen(osc) + 1));
 617         OBD_ALLOC(lprof->lp_dt, osclen);
 618         if (lprof->lp_dt == NULL)
 619                 GOTO(out, err = -ENOMEM);
 620         memcpy(lprof->lp_dt, osc, osclen);
 621
 622         if (mdclen > 0) {
 623                 LASSERT(mdclen == (strlen(mdc) + 1));
 624                 OBD_ALLOC(lprof->lp_md, mdclen);
 625                 if (lprof->lp_md == NULL)
 626                         GOTO(out, err = -ENOMEM);
 627                 memcpy(lprof->lp_md, mdc, mdclen);
 628         }
 629
 630         list_add(&lprof->lp_list, &lustre_profile_list);
 631         RETURN(err);
 632
 633 out:
 634         if (lprof->lp_md)
 635                 OBD_FREE(lprof->lp_md, mdclen);
 636         if (lprof->lp_dt)
 637                 OBD_FREE(lprof->lp_dt, osclen);
 638         if (lprof->lp_profile)
 639                 OBD_FREE(lprof->lp_profile, proflen);
 640         OBD_FREE(lprof, sizeof(*lprof));
 641         RETURN(err);
 642 }
 643
 644 void class_del_profile(const char *prof)
 645 {
 646         struct lustre_profile *lprof;
 647         ENTRY;
 648
 649         CDEBUG(D_CONFIG, "Del profile %s\n", prof);
 650
 651         lprof = class_get_profile(prof);
 652         if (lprof) {
 653                 list_del(&lprof->lp_list);
 654                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 655                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 656                 if (lprof->lp_md)
 657                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 658                 OBD_FREE(lprof, sizeof *lprof);
 659         }
 660         EXIT;
 661 }
 662
 663 /* COMPAT_146 */
 664 void class_del_profiles(void)
 665 {
 666         struct lustre_profile *lprof, *n;
 667         ENTRY;
 668
 669         list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
 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 /* We can't call ll_process_config directly because it lives in a module that
 681    must be loaded after this one. */
 682 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
 683
 684 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
 685 {
 686         client_process_config = cpc;
 687 }
 688 EXPORT_SYMBOL(lustre_register_client_process_config);
 689
 690 int class_process_config(struct lustre_cfg *lcfg)
 691 {
 692         struct obd_device *obd;
 693         int err;
 694
 695         LASSERT(lcfg && !IS_ERR(lcfg));
 696         CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
 697
 698         /* Commands that don't need a device */
 699         switch(lcfg->lcfg_command) {
 700         case LCFG_ATTACH: {
 701                 err = class_attach(lcfg);
 702                 GOTO(out, err);
 703         }
 704         case LCFG_ADD_UUID: {
 705                 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
 706                        " (%s)\n", lustre_cfg_string(lcfg, 1),
 707                        lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
 708
 709                 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
 710                 GOTO(out, err);
 711         }
 712         case LCFG_DEL_UUID: {
 713                 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
 714                        (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
 715                        ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
 716
 717                 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
 718                 GOTO(out, err);
 719         }
 720         case LCFG_MOUNTOPT: {
 721                 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
 722                        lustre_cfg_string(lcfg, 1),
 723                        lustre_cfg_string(lcfg, 2),
 724                        lustre_cfg_string(lcfg, 3));
 725                 /* set these mount options somewhere, so ll_fill_super
 726                  * can find them. */
 727                 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
 728                                         lustre_cfg_string(lcfg, 1),
 729                                         LUSTRE_CFG_BUFLEN(lcfg, 2),
 730                                         lustre_cfg_string(lcfg, 2),
 731                                         LUSTRE_CFG_BUFLEN(lcfg, 3),
 732                                         lustre_cfg_string(lcfg, 3));
 733                 GOTO(out, err);
 734         }
 735         case LCFG_DEL_MOUNTOPT: {
 736                 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
 737                        lustre_cfg_string(lcfg, 1));
 738                 class_del_profile(lustre_cfg_string(lcfg, 1));
 739                 GOTO(out, err = 0);
 740         }
 741         case LCFG_SET_TIMEOUT: {
 742                 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
 743                        obd_timeout, lcfg->lcfg_num);
 744                 obd_timeout = max(lcfg->lcfg_num, 1U);
 745                 obd_health_check_timeout = HEALTH_CHECK_TIMEOUT;
 746                 GOTO(out, err = 0);
 747         }
 748         case LCFG_SET_UPCALL: {
 749                 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
 750                 /* COMPAT_146 Don't fail on old configs */
 751                 GOTO(out, err = 0);
 752         }
 753         case LCFG_MARKER: {
 754                 struct cfg_marker *marker;
 755                 marker = lustre_cfg_buf(lcfg, 1);
 756                 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
 757                        marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
 758                 GOTO(out, err = 0);
 759         }
 760         case LCFG_PARAM: {
 761                 /* llite has no obd */
 762                 if ((class_match_param(lustre_cfg_string(lcfg, 1),
 763                                        PARAM_LLITE, 0) == 0) &&
 764                     client_process_config) {
 765                         err = (*client_process_config)(lcfg);
 766                         GOTO(out, err);
 767                 }
 768                 /* Fall through */
 769                 break;
 770         }
 771         }
 772
 773         /* Commands that require a device */
 774         obd = class_name2obd(lustre_cfg_string(lcfg, 0));
 775         if (obd == NULL) {
 776                 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
 777                         CERROR("this lcfg command requires a device name\n");
 778                 else
 779                         CERROR("no device for: %s\n",
 780                                lustre_cfg_string(lcfg, 0));
 781
 782                 GOTO(out, err = -EINVAL);
 783         }
 784
 785         switch(lcfg->lcfg_command) {
 786         case LCFG_SETUP: {
 787                 err = class_setup(obd, lcfg);
 788                 GOTO(out, err);
 789         }
 790         case LCFG_DETACH: {
 791                 err = class_detach(obd, lcfg);
 792                 GOTO(out, err = 0);
 793         }
 794         case LCFG_CLEANUP: {
 795                 err = class_cleanup(obd, lcfg);
 796                 GOTO(out, err = 0);
 797         }
 798         case LCFG_ADD_CONN: {
 799                 err = class_add_conn(obd, lcfg);
 800                 GOTO(out, err = 0);
 801         }
 802         case LCFG_DEL_CONN: {
 803                 err = class_del_conn(obd, lcfg);
 804                 GOTO(out, err = 0);
 805         }
 806         case LCFG_SEC_FLAVOR: {
 807                 err = class_sec_flavor(obd, lcfg);
 808                 GOTO(out, err = 0);
 809         }
 810         default: {
 811                 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
 812                 GOTO(out, err);
 813
 814         }
 815         }
 816 out:
 817         if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
 818                 CWARN("Ignoring error %d on optional command %#x\n", err,
 819                       lcfg->lcfg_command);
 820                 err = 0;
 821         }
 822         return err;
 823 }
 824
 825 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 826                              struct lustre_cfg *lcfg, void *data)
 827 {
 828 #ifdef __KERNEL__
 829         struct lprocfs_vars *var;
 830         char *key, *sval;
 831         int i, keylen, vallen;
 832         int matched = 0, j = 0;
 833         int rc = 0;
 834         ENTRY;
 835
 836         if (lcfg->lcfg_command != LCFG_PARAM) {
 837                 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
 838                 RETURN(-EINVAL);
 839         }
 840
 841         /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
 842            or   lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
 843            or   lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
 844         for (i = 1; i < lcfg->lcfg_bufcount; i++) {
 845                 key = lustre_cfg_buf(lcfg, i);
 846                 /* Strip off prefix */
 847                 class_match_param(key, prefix, &key);
 848                 sval = strchr(key, '=');
 849                 if (!sval || (*(sval + 1) == 0)) {
 850                         CERROR("Can't parse param %s\n", key);
 851                         rc = -EINVAL;
 852                         /* continue parsing other params */
 853                         continue;
 854                 }
 855                 keylen = sval - key;
 856                 sval++;
 857                 vallen = strlen(sval);
 858                 matched = 0;
 859                 j = 0;
 860                 /* Search proc entries */
 861                 while (lvars[j].name) {
 862                         var = &lvars[j];
 863                         if (class_match_param(key, (char *)var->name, 0) == 0 &&
 864                             keylen == strlen(var->name)) {
 865                                 matched++;
 866                                 rc = -EROFS;
 867                                 if (var->write_fptr) {
 868                                         mm_segment_t oldfs;
 869                                         oldfs = get_fs();
 870                                         set_fs(KERNEL_DS);
 871                                         rc = (var->write_fptr)(NULL, sval,
 872                                                                vallen, data);
 873                                         set_fs(oldfs);
 874                                 }
 875                                 if (rc < 0)
 876                                         CERROR("writing proc entry %s err %d\n",
 877                                                var->name, rc);
 878                                 break;
 879                         }
 880                         j++;
 881                 }
 882                 if (!matched) {
 883                         CERROR("%s: unknown param %s\n",
 884                                (char *)lustre_cfg_string(lcfg, 0), key);
 885                         rc = -EINVAL;
 886                         /* continue parsing other params */
 887                 } else {
 888                         LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
 889                                       (char *)lustre_cfg_string(lcfg, 0),
 890                                       (int)strlen(prefix) - 1, prefix,
 891                                       (int)(sval - key - 1), key, sval);
 892                 }
 893         }
 894
 895         if (rc > 0)
 896                 rc = 0;
 897         RETURN(rc);
 898 #else
 899         CDEBUG(D_CONFIG, "liblustre can't process params.\n");
 900         /* Don't throw config error */
 901         RETURN(0);
 902 #endif
 903 }
 904
 905 int class_config_dump_handler(struct llog_handle * handle,
 906                               struct llog_rec_hdr *rec, void *data);
 907
 908 #ifdef __KERNEL__
 909 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
 910 #else
 911 #define lustre_check_exclusion(a,b)  0
 912 #endif
 913
 914 static int class_config_llog_handler(struct llog_handle * handle,
 915                                      struct llog_rec_hdr *rec, void *data)
 916 {
 917         struct config_llog_instance *clli = data;
 918         int cfg_len = rec->lrh_len;
 919         char *cfg_buf = (char*) (rec + 1);
 920         int rc = 0;
 921         ENTRY;
 922
 923         //class_config_dump_handler(handle, rec, data);
 924
 925         switch (rec->lrh_type) {
 926         case OBD_CFG_REC: {
 927                 struct lustre_cfg *lcfg, *lcfg_new;
 928                 struct lustre_cfg_bufs bufs;
 929                 char *inst_name = NULL;
 930                 int inst_len = 0;
 931                 int inst = 0;
 932
 933                 lcfg = (struct lustre_cfg *)cfg_buf;
 934                 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION))
 935                         lustre_swab_lustre_cfg(lcfg);
 936
 937                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
 938                 if (rc)
 939                         GOTO(out, rc);
 940
 941                 /* Figure out config state info */
 942                 if (lcfg->lcfg_command == LCFG_MARKER) {
 943                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
 944                         CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
 945                                clli->cfg_flags, marker->cm_flags);
 946                         if (marker->cm_flags & CM_START) {
 947                                 /* all previous flags off */
 948                                 clli->cfg_flags = CFG_F_MARKER;
 949                                 if (marker->cm_flags & CM_SKIP) {
 950                                         clli->cfg_flags |= CFG_F_SKIP;
 951                                         CDEBUG(D_CONFIG, "SKIP #%d\n",
 952                                                marker->cm_step);
 953                                 } else if ((marker->cm_flags & CM_EXCLUDE) ||
 954                                            lustre_check_exclusion(clli->cfg_sb,
 955                                                           marker->cm_tgtname)) {
 956                                         clli->cfg_flags |= CFG_F_EXCLUDE;
 957                                         CDEBUG(D_CONFIG, "EXCLUDE %d\n",
 958                                                marker->cm_step);
 959                                 }
 960                         } else if (marker->cm_flags & CM_END) {
 961                                 clli->cfg_flags = 0;
 962                         }
 963                 }
 964                 /* A config command without a start marker before it is
 965                    illegal (post 146) */
 966                 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
 967                     !(clli->cfg_flags & CFG_F_MARKER) &&
 968                     (lcfg->lcfg_command != LCFG_MARKER)) {
 969                         CWARN("Config not inside markers, ignoring! "
 970                               "(inst: %s, uuid: %s, flags: %#x)\n",
 971                               clli->cfg_instance ? clli->cfg_instance : "<null>",
 972                               clli->cfg_uuid.uuid, clli->cfg_flags);
 973                         clli->cfg_flags |= CFG_F_SKIP;
 974                 }
 975                 if (clli->cfg_flags & CFG_F_SKIP) {
 976                         CDEBUG(D_CONFIG, "skipping %#x\n",
 977                                clli->cfg_flags);
 978                         rc = 0;
 979                         /* No processing! */
 980                         break;
 981                 }
 982
 983                 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
 984                     (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
 985                         /* Add inactive instead */
 986                         lcfg->lcfg_command = LCFG_LOV_ADD_INA;
 987
 988                 lustre_cfg_bufs_init(&bufs, lcfg);
 989
 990                 if (clli && clli->cfg_instance &&
 991                     LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
 992                         inst = 1;
 993                         inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
 994                                 strlen(clli->cfg_instance) + 1;
 995                         OBD_ALLOC(inst_name, inst_len);
 996                         if (inst_name == NULL)
 997                                 GOTO(out, rc = -ENOMEM);
 998                         sprintf(inst_name, "%s-%s",
 999                                 lustre_cfg_string(lcfg, 0),
1000                                 clli->cfg_instance);
1001                         lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1002                         CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1003                                lcfg->lcfg_command, inst_name);
1004                 }
1005
1006                 /* we override the llog's uuid for clients, to insure they
1007                 are unique */
1008                 if (clli && clli->cfg_instance &&
1009                     lcfg->lcfg_command == LCFG_ATTACH) {
1010                         lustre_cfg_bufs_set_string(&bufs, 2,
1011                                                    clli->cfg_uuid.uuid);
1012                 }
1013
1014                 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1015
1016                 lcfg_new->lcfg_num   = lcfg->lcfg_num;
1017                 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1018
1019                 /* XXX Hack to try to remain binary compatible with
1020                  * pre-newconfig logs */
1021                 if (lcfg->lcfg_nal != 0 &&      /* pre-newconfig log? */
1022                     (lcfg->lcfg_nid >> 32) == 0) {
1023                         __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1024
1025                         lcfg_new->lcfg_nid =
1026                                 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1027                         CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1028                               lcfg->lcfg_nal, addr,
1029                               libcfs_nid2str(lcfg_new->lcfg_nid));
1030                 } else {
1031                         lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1032                 }
1033
1034                 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1035
1036                 rc = class_process_config(lcfg_new);
1037                 lustre_cfg_free(lcfg_new);
1038
1039                 if (inst)
1040                         OBD_FREE(inst_name, inst_len);
1041                 break;
1042         }
1043         default:
1044                 CERROR("Unknown llog record type %#x encountered\n",
1045                        rec->lrh_type);
1046                 break;
1047         }
1048 out:
1049         if (rc) {
1050                 CERROR("Err %d on cfg command:\n", rc);
1051                 class_config_dump_handler(handle, rec, data);
1052         }
1053         RETURN(rc);
1054 }
1055
1056 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1057                             struct config_llog_instance *cfg)
1058 {
1059         struct llog_process_cat_data cd = {0, 0};
1060         struct llog_handle *llh;
1061         int rc, rc2;
1062         ENTRY;
1063
1064         CDEBUG(D_INFO, "looking up llog %s\n", name);
1065         rc = llog_create(ctxt, &llh, NULL, name);
1066         if (rc)
1067                 RETURN(rc);
1068
1069         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1070         if (rc)
1071                 GOTO(parse_out, rc);
1072
1073         /* continue processing from where we last stopped to end-of-log */
1074         if (cfg)
1075                 cd.first_idx = cfg->cfg_last_idx;
1076         cd.last_idx = 0;
1077
1078         rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1079
1080         CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1081                cd.first_idx + 1, cd.last_idx, rc);
1082
1083         if (cfg)
1084                 cfg->cfg_last_idx = cd.last_idx;
1085
1086 parse_out:
1087         rc2 = llog_close(llh);
1088         if (rc == 0)
1089                 rc = rc2;
1090
1091         RETURN(rc);
1092 }
1093
1094 int class_config_dump_handler(struct llog_handle * handle,
1095                               struct llog_rec_hdr *rec, void *data)
1096 {
1097         int cfg_len = rec->lrh_len;
1098         char *cfg_buf = (char*) (rec + 1);
1099         char *outstr, *ptr, *end;
1100         int rc = 0;
1101         ENTRY;
1102
1103         OBD_ALLOC(outstr, 256);
1104         end = outstr + 256;
1105         ptr = outstr;
1106         if (!outstr) {
1107                 RETURN(-ENOMEM);
1108         }
1109         if (rec->lrh_type == OBD_CFG_REC) {
1110                 struct lustre_cfg *lcfg;
1111                 int i;
1112
1113                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1114                 if (rc)
1115                         GOTO(out, rc);
1116                 lcfg = (struct lustre_cfg *)cfg_buf;
1117
1118                 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1119                                 lcfg->lcfg_command);
1120                 if (lcfg->lcfg_flags) {
1121                         ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1122                                         lcfg->lcfg_flags);
1123                 }
1124                 if (lcfg->lcfg_num) {
1125                         ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1126                                         lcfg->lcfg_num);
1127                 }
1128                 if (lcfg->lcfg_nid) {
1129                         ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n     ",
1130                                         libcfs_nid2str(lcfg->lcfg_nid),
1131                                         lcfg->lcfg_nid);
1132                 }
1133                 if (lcfg->lcfg_command == LCFG_MARKER) {
1134                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1135                         ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1136                                         marker->cm_step, marker->cm_flags,
1137                                         marker->cm_tgtname, marker->cm_comment);
1138                 } else {
1139                         for (i = 0; i <  lcfg->lcfg_bufcount; i++) {
1140                                 ptr += snprintf(ptr, end-ptr, "%d:%s  ", i,
1141                                                 lustre_cfg_string(lcfg, i));
1142                         }
1143                 }
1144                 LCONSOLE(D_WARNING, "   %s\n", outstr);
1145         } else {
1146                 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1147                 rc = -EINVAL;
1148         }
1149 out:
1150         OBD_FREE(outstr, 256);
1151         RETURN(rc);
1152 }
1153
1154 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1155                            struct config_llog_instance *cfg)
1156 {
1157         struct llog_handle *llh;
1158         int rc, rc2;
1159         ENTRY;
1160
1161         LCONSOLE_INFO("Dumping config log %s\n", name);
1162
1163         rc = llog_create(ctxt, &llh, NULL, name);
1164         if (rc)
1165                 RETURN(rc);
1166
1167         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1168         if (rc)
1169                 GOTO(parse_out, rc);
1170
1171         rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1172 parse_out:
1173         rc2 = llog_close(llh);
1174         if (rc == 0)
1175                 rc = rc2;
1176
1177         LCONSOLE_INFO("End config log %s\n", name);
1178         RETURN(rc);
1179
1180 }
1181
1182 /* Cleanup and detach */
1183 int class_manual_cleanup(struct obd_device *obd)
1184 {
1185         struct lustre_cfg *lcfg;
1186         struct lustre_cfg_bufs bufs;
1187         int rc;
1188         char flags[3]="";
1189         ENTRY;
1190
1191         if (!obd) {
1192                 CERROR("empty cleanup\n");
1193                 RETURN(-EALREADY);
1194         }
1195
1196         if (obd->obd_force)
1197                 strcat(flags, "F");
1198         if (obd->obd_fail)
1199                 strcat(flags, "A");
1200
1201         CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1202                obd->obd_name, flags);
1203
1204         lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1205         lustre_cfg_bufs_set_string(&bufs, 1, flags);
1206         lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1207
1208         rc = class_process_config(lcfg);
1209         if (rc) {
1210                 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1211                 GOTO(out, rc);
1212         }
1213
1214         /* the lcfg is almost the same for both ops */
1215         lcfg->lcfg_command = LCFG_DETACH;
1216         rc = class_process_config(lcfg);
1217         if (rc)
1218                 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1219 out:
1220         lustre_cfg_free(lcfg);
1221         RETURN(rc);
1222 }
1223