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_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
 183         CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
 184         CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
 185
 186         spin_lock_init(&obd->obd_uncommitted_replies_lock);
 187         CFS_INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
 188
 189         len = strlen(uuid);
 190         if (len >= sizeof(obd->obd_uuid)) {
 191                 CERROR("uuid must be < "LPSZ" bytes long\n",
 192                        sizeof(obd->obd_uuid));
 193                 GOTO(out, rc = -EINVAL);
 194         }
 195         memcpy(obd->obd_uuid.uuid, uuid, len);
 196
 197         /* do the attach */
 198         if (OBP(obd, attach)) {
 199                 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
 200                 if (rc)
 201                         GOTO(out, rc = -EINVAL);
 202         }
 203
 204         /* Detach drops this */
 205         spin_lock(&obd->obd_dev_lock);
 206         atomic_set(&obd->obd_refcount, 1);
 207         spin_unlock(&obd->obd_dev_lock);
 208
 209         obd->obd_attached = 1;
 210         CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
 211                obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
 212         RETURN(0);
 213  out:
 214         if (obd != NULL) {
 215                 class_release_dev(obd);
 216         }
 217         return rc;
 218 }
 219
 220 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 221 {
 222         int err = 0;
 223         struct obd_export *exp;
 224         ENTRY;
 225
 226         LASSERT(obd != NULL);
 227         LASSERTF(obd == class_num2obd(obd->obd_minor), "obd %p != obd_devs[%d] %p\n",
 228                  obd, obd->obd_minor, class_num2obd(obd->obd_minor));
 229         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, "obd %p obd_magic %08x != %08x\n",
 230                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 231
 232         /* have we attached a type to this device? */
 233         if (!obd->obd_attached) {
 234                 CERROR("Device %d not attached\n", obd->obd_minor);
 235                 RETURN(-ENODEV);
 236         }
 237
 238         if (obd->obd_set_up) {
 239                 CERROR("Device %d already setup (type %s)\n",
 240                        obd->obd_minor, obd->obd_type->typ_name);
 241                 RETURN(-EEXIST);
 242         }
 243
 244         /* is someone else setting us up right now? (attach inits spinlock) */
 245         spin_lock(&obd->obd_dev_lock);
 246         if (obd->obd_starting) {
 247                 spin_unlock(&obd->obd_dev_lock);
 248                 CERROR("Device %d setup in progress (type %s)\n",
 249                        obd->obd_minor, obd->obd_type->typ_name);
 250                 RETURN(-EEXIST);
 251         }
 252         /* just leave this on forever.  I can't use obd_set_up here because
 253            other fns check that status, and we're not actually set up yet. */
 254         obd->obd_starting = 1;
 255         spin_unlock(&obd->obd_dev_lock);
 256
 257         exp = class_new_export(obd, &obd->obd_uuid);
 258         if (IS_ERR(exp))
 259                 RETURN(PTR_ERR(exp));
 260         obd->obd_self_export = exp;
 261         list_del_init(&exp->exp_obd_chain_timed);
 262         class_export_put(exp);
 263
 264         err = obd_setup(obd, lcfg);
 265         if (err)
 266                 GOTO(err_exp, err);
 267
 268         obd->obd_set_up = 1;
 269
 270         spin_lock(&obd->obd_dev_lock);
 271         /* cleanup drops this */
 272         class_incref(obd);
 273         spin_unlock(&obd->obd_dev_lock);
 274
 275         CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
 276                obd->obd_name, obd->obd_uuid.uuid);
 277
 278         RETURN(0);
 279
 280 err_exp:
 281         CERROR("setup %s failed (%d)\n", obd->obd_name, err);
 282         class_unlink_export(obd->obd_self_export);
 283         obd->obd_self_export = NULL;
 284         obd->obd_starting = 0;
 285         RETURN(err);
 286 }
 287
 288 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
 289 {
 290         ENTRY;
 291
 292         if (obd->obd_set_up) {
 293                 CERROR("OBD device %d still set up\n", obd->obd_minor);
 294                 RETURN(-EBUSY);
 295         }
 296
 297         spin_lock(&obd->obd_dev_lock);
 298         if (!obd->obd_attached) {
 299                 spin_unlock(&obd->obd_dev_lock);
 300                 CERROR("OBD device %d not attached\n", obd->obd_minor);
 301                 RETURN(-ENODEV);
 302         }
 303         obd->obd_attached = 0;
 304         spin_unlock(&obd->obd_dev_lock);
 305
 306         CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
 307                obd->obd_name, obd->obd_uuid.uuid);
 308
 309         class_decref(obd);
 310
 311         /* not strictly necessary, but cleans up eagerly */
 312         obd_zombie_impexp_cull();
 313
 314         RETURN(0);
 315 }
 316
 317 static void dump_exports(struct obd_device *obd)
 318 {
 319         struct obd_export *exp, *n;
 320
 321         list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
 322                 struct ptlrpc_reply_state *rs;
 323                 struct ptlrpc_reply_state *first_reply = NULL;
 324                 int                        nreplies = 0;
 325
 326                 list_for_each_entry (rs, &exp->exp_outstanding_replies,
 327                                      rs_exp_list) {
 328                         if (nreplies == 0)
 329                                 first_reply = rs;
 330                         nreplies++;
 331                 }
 332
 333                 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
 334                        obd->obd_name, exp, exp->exp_client_uuid.uuid,
 335                        obd_export_nid2str(exp),
 336                        atomic_read(&exp->exp_refcount),
 337                        exp->exp_failed, nreplies, first_reply,
 338                        nreplies > 3 ? "..." : "");
 339         }
 340 }
 341
 342 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
 343 {
 344         int err = 0;
 345         char *flag;
 346         ENTRY;
 347
 348         OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
 349
 350         if (!obd->obd_set_up) {
 351                 CERROR("Device %d not setup\n", obd->obd_minor);
 352                 RETURN(-ENODEV);
 353         }
 354
 355         spin_lock(&obd->obd_dev_lock);
 356         if (obd->obd_stopping) {
 357                 spin_unlock(&obd->obd_dev_lock);
 358                 CERROR("OBD %d already stopping\n", obd->obd_minor);
 359                 RETURN(-ENODEV);
 360         }
 361         /* Leave this on forever */
 362         obd->obd_stopping = 1;
 363         spin_unlock(&obd->obd_dev_lock);
 364
 365         if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
 366                 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
 367                         switch (*flag) {
 368                         case 'F':
 369                                 obd->obd_force = 1;
 370                                 break;
 371                         case 'A':
 372                                 LCONSOLE_WARN("Failing over %s\n",
 373                                               obd->obd_name);
 374                                 obd->obd_fail = 1;
 375                                 obd->obd_no_transno = 1;
 376                                 obd->obd_no_recov = 1;
 377                                 /* Set the obd readonly if we can */
 378                                 if (OBP(obd, iocontrol))
 379                                         obd_iocontrol(OBD_IOC_SET_READONLY,
 380                                                       obd->obd_self_export,
 381                                                       0, NULL, NULL);
 382                                 break;
 383                         default:
 384                                 CERROR("unrecognised flag '%c'\n",
 385                                        *flag);
 386                         }
 387         }
 388
 389         /* The three references that should be remaining are the
 390          * obd_self_export and the attach and setup references. */
 391         if (atomic_read(&obd->obd_refcount) > 3) {
 392 #if 0           /* We should never fail to cleanup with mountconf */
 393                 if (!(obd->obd_fail || obd->obd_force)) {
 394                         CERROR("OBD %s is still busy with %d references\n"
 395                                "You should stop active file system users,"
 396                                " or use the --force option to cleanup.\n",
 397                                obd->obd_name, atomic_read(&obd->obd_refcount));
 398                         dump_exports(obd);
 399                         /* Allow a failed cleanup to try again. */
 400                         obd->obd_stopping = 0;
 401                 }
 402 #endif
 403                 /* refcounf - 3 might be the number of real exports
 404                    (excluding self export). But class_incref is called
 405                    by other things as well, so don't count on it. */
 406                 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
 407                        obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
 408                 dump_exports(obd);
 409                 class_disconnect_exports(obd);
 410         }
 411         LASSERT(obd->obd_self_export);
 412
 413         /* Precleanup stage 1, we must make sure all exports (other than the
 414            self-export) get destroyed. */
 415         err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
 416         if (err)
 417                 CERROR("Precleanup %s returned %d\n",
 418                        obd->obd_name, err);
 419
 420         class_decref(obd);
 421         obd->obd_set_up = 0;
 422         RETURN(0);
 423 }
 424
 425 struct obd_device *class_incref(struct obd_device *obd)
 426 {
 427         atomic_inc(&obd->obd_refcount);
 428         CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
 429                atomic_read(&obd->obd_refcount));
 430
 431         return obd;
 432 }
 433
 434 void class_decref(struct obd_device *obd)
 435 {
 436         int err;
 437         int refs;
 438
 439         spin_lock(&obd->obd_dev_lock);
 440         atomic_dec(&obd->obd_refcount);
 441         refs = atomic_read(&obd->obd_refcount);
 442         spin_unlock(&obd->obd_dev_lock);
 443
 444         CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
 445
 446         if ((refs == 1) && obd->obd_stopping) {
 447                 /* All exports (other than the self-export) have been
 448                    destroyed; there should be no more in-progress ops
 449                    by this point.*/
 450                 /* if we're not stopping, we didn't finish setup */
 451                 /* Precleanup stage 2,  do other type-specific
 452                    cleanup requiring the self-export. */
 453                 err = obd_precleanup(obd, OBD_CLEANUP_SELF_EXP);
 454                 if (err)
 455                         CERROR("Precleanup %s returned %d\n",
 456                                obd->obd_name, err);
 457
 458                 spin_lock(&obd->obd_self_export->exp_lock);
 459                 obd->obd_self_export->exp_flags |=
 460                         (obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 461                         (obd->obd_force ? OBD_OPT_FORCE : 0);
 462                 spin_unlock(&obd->obd_self_export->exp_lock);
 463
 464                 /* note that we'll recurse into class_decref again */
 465                 class_unlink_export(obd->obd_self_export);
 466                 return;
 467         }
 468
 469         if (refs == 0) {
 470                 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
 471                        obd->obd_name, obd->obd_uuid.uuid);
 472                 LASSERT(!obd->obd_attached);
 473                 if (obd->obd_stopping) {
 474                         /* If we're not stopping, we were never set up */
 475                         err = obd_cleanup(obd);
 476                         if (err)
 477                                 CERROR("Cleanup %s returned %d\n",
 478                                        obd->obd_name, err);
 479                 }
 480                 if (OBP(obd, detach)) {
 481                         err = OBP(obd,detach)(obd);
 482                         if (err)
 483                                 CERROR("Detach returned %d\n", err);
 484                 }
 485                 class_release_dev(obd);
 486         }
 487 }
 488
 489 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 490 {
 491         struct obd_import *imp;
 492         struct obd_uuid uuid;
 493         int rc;
 494         ENTRY;
 495
 496         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 497             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 498                 CERROR("invalid conn_uuid\n");
 499                 RETURN(-EINVAL);
 500         }
 501         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 502             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
 503             strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
 504                 CERROR("can't add connection on non-client dev\n");
 505                 RETURN(-EINVAL);
 506         }
 507
 508         imp = obd->u.cli.cl_import;
 509         if (!imp) {
 510                 CERROR("try to add conn on immature client dev\n");
 511                 RETURN(-EINVAL);
 512         }
 513
 514         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 515         rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
 516
 517         RETURN(rc);
 518 }
 519
 520 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 521 {
 522         struct obd_import *imp;
 523         struct obd_uuid uuid;
 524         int rc;
 525         ENTRY;
 526
 527         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 528             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 529                 CERROR("invalid conn_uuid\n");
 530                 RETURN(-EINVAL);
 531         }
 532         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 533             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 534                 CERROR("can't del connection on non-client dev\n");
 535                 RETURN(-EINVAL);
 536         }
 537
 538         imp = obd->u.cli.cl_import;
 539         if (!imp) {
 540                 CERROR("try to del conn on immature client dev\n");
 541                 RETURN(-EINVAL);
 542         }
 543
 544         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 545         rc = obd_del_conn(imp, &uuid);
 546
 547         RETURN(rc);
 548 }
 549
 550 int class_sec_flavor(struct obd_device *obd, struct lustre_cfg *lcfg)
 551 {
 552         struct sec_flavor_config *conf;
 553         ENTRY;
 554
 555         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 556             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 557                 CERROR("Can't set security flavor on obd %s\n",
 558                        obd->obd_type->typ_name);
 559                 RETURN(-EINVAL);
 560         }
 561
 562         if (LUSTRE_CFG_BUFLEN(lcfg, 1) != sizeof(*conf)) {
 563                 CERROR("invalid data\n");
 564                 RETURN(-EINVAL);
 565         }
 566
 567         conf = &obd->u.cli.cl_sec_conf;
 568         memcpy(conf, lustre_cfg_buf(lcfg, 1), sizeof(*conf));
 569
 570 #ifdef __BIG_ENDIAN
 571         __swab32s(&conf->sfc_rpc_flavor);
 572         __swab32s(&conf->sfc_bulk_csum);
 573         __swab32s(&conf->sfc_bulk_priv);
 574         __swab32s(&conf->sfc_flags);
 575 #endif
 576
 577         RETURN(0);
 578 }
 579
 580 CFS_LIST_HEAD(lustre_profile_list);
 581
 582 struct lustre_profile *class_get_profile(const char * prof)
 583 {
 584         struct lustre_profile *lprof;
 585
 586         ENTRY;
 587         list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
 588                 if (!strcmp(lprof->lp_profile, prof)) {
 589                         RETURN(lprof);
 590                 }
 591         }
 592         RETURN(NULL);
 593 }
 594
 595 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
 596                       int mdclen, char *mdc)
 597 {
 598         struct lustre_profile *lprof;
 599         int err = 0;
 600         ENTRY;
 601
 602         CDEBUG(D_CONFIG, "Add profile %s\n", prof);
 603
 604         OBD_ALLOC(lprof, sizeof(*lprof));
 605         if (lprof == NULL)
 606                 RETURN(-ENOMEM);
 607         CFS_INIT_LIST_HEAD(&lprof->lp_list);
 608
 609         LASSERT(proflen == (strlen(prof) + 1));
 610         OBD_ALLOC(lprof->lp_profile, proflen);
 611         if (lprof->lp_profile == NULL)
 612                 GOTO(out, err = -ENOMEM);
 613         memcpy(lprof->lp_profile, prof, proflen);
 614
 615         LASSERT(osclen == (strlen(osc) + 1));
 616         OBD_ALLOC(lprof->lp_dt, osclen);
 617         if (lprof->lp_dt == NULL)
 618                 GOTO(out, err = -ENOMEM);
 619         memcpy(lprof->lp_dt, osc, osclen);
 620
 621         if (mdclen > 0) {
 622                 LASSERT(mdclen == (strlen(mdc) + 1));
 623                 OBD_ALLOC(lprof->lp_md, mdclen);
 624                 if (lprof->lp_md == NULL)
 625                         GOTO(out, err = -ENOMEM);
 626                 memcpy(lprof->lp_md, mdc, mdclen);
 627         }
 628
 629         list_add(&lprof->lp_list, &lustre_profile_list);
 630         RETURN(err);
 631
 632 out:
 633         if (lprof->lp_md)
 634                 OBD_FREE(lprof->lp_md, mdclen);
 635         if (lprof->lp_dt)
 636                 OBD_FREE(lprof->lp_dt, osclen);
 637         if (lprof->lp_profile)
 638                 OBD_FREE(lprof->lp_profile, proflen);
 639         OBD_FREE(lprof, sizeof(*lprof));
 640         RETURN(err);
 641 }
 642
 643 void class_del_profile(const char *prof)
 644 {
 645         struct lustre_profile *lprof;
 646         ENTRY;
 647
 648         CDEBUG(D_CONFIG, "Del profile %s\n", prof);
 649
 650         lprof = class_get_profile(prof);
 651         if (lprof) {
 652                 list_del(&lprof->lp_list);
 653                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 654                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 655                 if (lprof->lp_md)
 656                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 657                 OBD_FREE(lprof, sizeof *lprof);
 658         }
 659         EXIT;
 660 }
 661
 662 /* COMPAT_146 */
 663 void class_del_profiles(void)
 664 {
 665         struct lustre_profile *lprof, *n;
 666         ENTRY;
 667
 668         list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
 669                 list_del(&lprof->lp_list);
 670                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 671                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 672                 if (lprof->lp_md)
 673                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 674                 OBD_FREE(lprof, sizeof *lprof);
 675         }
 676         EXIT;
 677 }
 678
 679 /* We can't call ll_process_config directly because it lives in a module that
 680    must be loaded after this one. */
 681 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
 682
 683 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
 684 {
 685         client_process_config = cpc;
 686 }
 687 EXPORT_SYMBOL(lustre_register_client_process_config);
 688
 689 int class_process_config(struct lustre_cfg *lcfg)
 690 {
 691         struct obd_device *obd;
 692         int err;
 693
 694         LASSERT(lcfg && !IS_ERR(lcfg));
 695         CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
 696
 697         /* Commands that don't need a device */
 698         switch(lcfg->lcfg_command) {
 699         case LCFG_ATTACH: {
 700                 err = class_attach(lcfg);
 701                 GOTO(out, err);
 702         }
 703         case LCFG_ADD_UUID: {
 704                 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
 705                        " (%s)\n", lustre_cfg_string(lcfg, 1),
 706                        lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
 707
 708                 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
 709                 GOTO(out, err);
 710         }
 711         case LCFG_DEL_UUID: {
 712                 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
 713                        (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
 714                        ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
 715
 716                 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
 717                 GOTO(out, err);
 718         }
 719         case LCFG_MOUNTOPT: {
 720                 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
 721                        lustre_cfg_string(lcfg, 1),
 722                        lustre_cfg_string(lcfg, 2),
 723                        lustre_cfg_string(lcfg, 3));
 724                 /* set these mount options somewhere, so ll_fill_super
 725                  * can find them. */
 726                 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
 727                                         lustre_cfg_string(lcfg, 1),
 728                                         LUSTRE_CFG_BUFLEN(lcfg, 2),
 729                                         lustre_cfg_string(lcfg, 2),
 730                                         LUSTRE_CFG_BUFLEN(lcfg, 3),
 731                                         lustre_cfg_string(lcfg, 3));
 732                 GOTO(out, err);
 733         }
 734         case LCFG_DEL_MOUNTOPT: {
 735                 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
 736                        lustre_cfg_string(lcfg, 1));
 737                 class_del_profile(lustre_cfg_string(lcfg, 1));
 738                 GOTO(out, err = 0);
 739         }
 740         case LCFG_SET_TIMEOUT: {
 741                 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
 742                        obd_timeout, lcfg->lcfg_num);
 743                 obd_timeout = max(lcfg->lcfg_num, 1U);
 744                 obd_health_check_timeout = HEALTH_CHECK_TIMEOUT;
 745                 GOTO(out, err = 0);
 746         }
 747         case LCFG_SET_UPCALL: {
 748                 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
 749                 /* COMPAT_146 Don't fail on old configs */
 750                 GOTO(out, err = 0);
 751         }
 752         case LCFG_MARKER: {
 753                 struct cfg_marker *marker;
 754                 marker = lustre_cfg_buf(lcfg, 1);
 755                 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
 756                        marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
 757                 GOTO(out, err = 0);
 758         }
 759         case LCFG_PARAM: {
 760                 /* llite has no obd */
 761                 if ((class_match_param(lustre_cfg_string(lcfg, 1),
 762                                        PARAM_LLITE, 0) == 0) &&
 763                     client_process_config) {
 764                         err = (*client_process_config)(lcfg);
 765                         GOTO(out, err);
 766                 }
 767                 /* Fall through */
 768                 break;
 769         }
 770         }
 771
 772         /* Commands that require a device */
 773         obd = class_name2obd(lustre_cfg_string(lcfg, 0));
 774         if (obd == NULL) {
 775                 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
 776                         CERROR("this lcfg command requires a device name\n");
 777                 else
 778                         CERROR("no device for: %s\n",
 779                                lustre_cfg_string(lcfg, 0));
 780
 781                 GOTO(out, err = -EINVAL);
 782         }
 783
 784         switch(lcfg->lcfg_command) {
 785         case LCFG_SETUP: {
 786                 err = class_setup(obd, lcfg);
 787                 GOTO(out, err);
 788         }
 789         case LCFG_DETACH: {
 790                 err = class_detach(obd, lcfg);
 791                 GOTO(out, err = 0);
 792         }
 793         case LCFG_CLEANUP: {
 794                 err = class_cleanup(obd, lcfg);
 795                 GOTO(out, err = 0);
 796         }
 797         case LCFG_ADD_CONN: {
 798                 err = class_add_conn(obd, lcfg);
 799                 GOTO(out, err = 0);
 800         }
 801         case LCFG_DEL_CONN: {
 802                 err = class_del_conn(obd, lcfg);
 803                 GOTO(out, err = 0);
 804         }
 805         case LCFG_SEC_FLAVOR: {
 806                 err = class_sec_flavor(obd, lcfg);
 807                 GOTO(out, err = 0);
 808         }
 809         default: {
 810                 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
 811                 GOTO(out, err);
 812
 813         }
 814         }
 815 out:
 816         if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
 817                 CWARN("Ignoring error %d on optional command %#x\n", err,
 818                       lcfg->lcfg_command);
 819                 err = 0;
 820         }
 821         return err;
 822 }
 823
 824 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 825                              struct lustre_cfg *lcfg, void *data)
 826 {
 827 #ifdef __KERNEL__
 828         struct lprocfs_vars *var;
 829         char *key, *sval;
 830         int i, keylen, vallen;
 831         int matched = 0, j = 0;
 832         int rc = 0;
 833         ENTRY;
 834
 835         if (lcfg->lcfg_command != LCFG_PARAM) {
 836                 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
 837                 RETURN(-EINVAL);
 838         }
 839
 840         /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
 841            or   lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
 842            or   lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
 843         for (i = 1; i < lcfg->lcfg_bufcount; i++) {
 844                 key = lustre_cfg_buf(lcfg, i);
 845                 /* Strip off prefix */
 846                 class_match_param(key, prefix, &key);
 847                 sval = strchr(key, '=');
 848                 if (!sval || (*(sval + 1) == 0)) {
 849                         CERROR("Can't parse param %s\n", key);
 850                         rc = -EINVAL;
 851                         /* continue parsing other params */
 852                         continue;
 853                 }
 854                 keylen = sval - key;
 855                 sval++;
 856                 vallen = strlen(sval);
 857                 matched = 0;
 858                 j = 0;
 859                 /* Search proc entries */
 860                 while (lvars[j].name) {
 861                         var = &lvars[j];
 862                         if (class_match_param(key, (char *)var->name, 0) == 0 &&
 863                             keylen == strlen(var->name)) {
 864                                 matched++;
 865                                 rc = -EROFS;
 866                                 if (var->write_fptr) {
 867                                         mm_segment_t oldfs;
 868                                         oldfs = get_fs();
 869                                         set_fs(KERNEL_DS);
 870                                         rc = (var->write_fptr)(NULL, sval,
 871                                                                vallen, data);
 872                                         set_fs(oldfs);
 873                                 }
 874                                 if (rc < 0)
 875                                         CERROR("writing proc entry %s err %d\n",
 876                                                var->name, rc);
 877                                 break;
 878                         }
 879                         j++;
 880                 }
 881                 if (!matched) {
 882                         CERROR("%s: unknown param %s\n",
 883                                (char *)lustre_cfg_string(lcfg, 0), key);
 884                         rc = -EINVAL;
 885                         /* continue parsing other params */
 886                 } else {
 887                         LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
 888                                       (char *)lustre_cfg_string(lcfg, 0),
 889                                       (int)strlen(prefix) - 1, prefix,
 890                                       (int)(sval - key - 1), key, sval);
 891                 }
 892         }
 893
 894         if (rc > 0)
 895                 rc = 0;
 896         RETURN(rc);
 897 #else
 898         CDEBUG(D_CONFIG, "liblustre can't process params.\n");
 899         /* Don't throw config error */
 900         RETURN(0);
 901 #endif
 902 }
 903
 904 int class_config_dump_handler(struct llog_handle * handle,
 905                               struct llog_rec_hdr *rec, void *data);
 906
 907 #ifdef __KERNEL__
 908 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
 909 #else
 910 #define lustre_check_exclusion(a,b)  0
 911 #endif
 912
 913 static int class_config_llog_handler(struct llog_handle * handle,
 914                                      struct llog_rec_hdr *rec, void *data)
 915 {
 916         struct config_llog_instance *clli = data;
 917         int cfg_len = rec->lrh_len;
 918         char *cfg_buf = (char*) (rec + 1);
 919         int rc = 0;
 920         ENTRY;
 921
 922         //class_config_dump_handler(handle, rec, data);
 923
 924         switch (rec->lrh_type) {
 925         case OBD_CFG_REC: {
 926                 struct lustre_cfg *lcfg, *lcfg_new;
 927                 struct lustre_cfg_bufs bufs;
 928                 char *inst_name = NULL;
 929                 int inst_len = 0;
 930                 int inst = 0;
 931
 932                 lcfg = (struct lustre_cfg *)cfg_buf;
 933                 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION))
 934                         lustre_swab_lustre_cfg(lcfg);
 935
 936                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
 937                 if (rc)
 938                         GOTO(out, rc);
 939
 940                 /* Figure out config state info */
 941                 if (lcfg->lcfg_command == LCFG_MARKER) {
 942                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
 943                         CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
 944                                clli->cfg_flags, marker->cm_flags);
 945                         if (marker->cm_flags & CM_START) {
 946                                 /* all previous flags off */
 947                                 clli->cfg_flags = CFG_F_MARKER;
 948                                 if (marker->cm_flags & CM_SKIP) {
 949                                         clli->cfg_flags |= CFG_F_SKIP;
 950                                         CDEBUG(D_CONFIG, "SKIP #%d\n",
 951                                                marker->cm_step);
 952                                 } else if ((marker->cm_flags & CM_EXCLUDE) ||
 953                                            lustre_check_exclusion(clli->cfg_sb,
 954                                                           marker->cm_tgtname)) {
 955                                         clli->cfg_flags |= CFG_F_EXCLUDE;
 956                                         CDEBUG(D_CONFIG, "EXCLUDE %d\n",
 957                                                marker->cm_step);
 958                                 }
 959                         } else if (marker->cm_flags & CM_END) {
 960                                 clli->cfg_flags = 0;
 961                         }
 962                 }
 963                 /* A config command without a start marker before it is
 964                    illegal (post 146) */
 965                 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
 966                     !(clli->cfg_flags & CFG_F_MARKER) &&
 967                     (lcfg->lcfg_command != LCFG_MARKER)) {
 968                         CWARN("Config not inside markers, ignoring! "
 969                               "(inst: %s, uuid: %s, flags: %#x)\n",
 970                               clli->cfg_instance ? clli->cfg_instance : "<null>",
 971                               clli->cfg_uuid.uuid, clli->cfg_flags);
 972                         clli->cfg_flags |= CFG_F_SKIP;
 973                 }
 974                 if (clli->cfg_flags & CFG_F_SKIP) {
 975                         CDEBUG(D_CONFIG, "skipping %#x\n",
 976                                clli->cfg_flags);
 977                         rc = 0;
 978                         /* No processing! */
 979                         break;
 980                 }
 981
 982                 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
 983                     (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
 984                         /* Add inactive instead */
 985                         lcfg->lcfg_command = LCFG_LOV_ADD_INA;
 986
 987                 lustre_cfg_bufs_init(&bufs, lcfg);
 988
 989                 if (clli && clli->cfg_instance &&
 990                     LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
 991                         inst = 1;
 992                         inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
 993                                 strlen(clli->cfg_instance) + 1;
 994                         OBD_ALLOC(inst_name, inst_len);
 995                         if (inst_name == NULL)
 996                                 GOTO(out, rc = -ENOMEM);
 997                         sprintf(inst_name, "%s-%s",
 998                                 lustre_cfg_string(lcfg, 0),
 999                                 clli->cfg_instance);
1000                         lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1001                         CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1002                                lcfg->lcfg_command, inst_name);
1003                 }
1004
1005                 /* we override the llog's uuid for clients, to insure they
1006                 are unique */
1007                 if (clli && clli->cfg_instance &&
1008                     lcfg->lcfg_command == LCFG_ATTACH) {
1009                         lustre_cfg_bufs_set_string(&bufs, 2,
1010                                                    clli->cfg_uuid.uuid);
1011                 }
1012
1013                 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1014
1015                 lcfg_new->lcfg_num   = lcfg->lcfg_num;
1016                 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1017
1018                 /* XXX Hack to try to remain binary compatible with
1019                  * pre-newconfig logs */
1020                 if (lcfg->lcfg_nal != 0 &&      /* pre-newconfig log? */
1021                     (lcfg->lcfg_nid >> 32) == 0) {
1022                         __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1023
1024                         lcfg_new->lcfg_nid =
1025                                 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1026                         CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1027                               lcfg->lcfg_nal, addr,
1028                               libcfs_nid2str(lcfg_new->lcfg_nid));
1029                 } else {
1030                         lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1031                 }
1032
1033                 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1034
1035                 rc = class_process_config(lcfg_new);
1036                 lustre_cfg_free(lcfg_new);
1037
1038                 if (inst)
1039                         OBD_FREE(inst_name, inst_len);
1040                 break;
1041         }
1042         default:
1043                 CERROR("Unknown llog record type %#x encountered\n",
1044                        rec->lrh_type);
1045                 break;
1046         }
1047 out:
1048         if (rc) {
1049                 CERROR("Err %d on cfg command:\n", rc);
1050                 class_config_dump_handler(handle, rec, data);
1051         }
1052         RETURN(rc);
1053 }
1054
1055 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1056                             struct config_llog_instance *cfg)
1057 {
1058         struct llog_process_cat_data cd = {0, 0};
1059         struct llog_handle *llh;
1060         int rc, rc2;
1061         ENTRY;
1062
1063         CDEBUG(D_INFO, "looking up llog %s\n", name);
1064         rc = llog_create(ctxt, &llh, NULL, name);
1065         if (rc)
1066                 RETURN(rc);
1067
1068         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1069         if (rc)
1070                 GOTO(parse_out, rc);
1071
1072         /* continue processing from where we last stopped to end-of-log */
1073         if (cfg)
1074                 cd.first_idx = cfg->cfg_last_idx;
1075         cd.last_idx = 0;
1076
1077         rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1078
1079         CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1080                cd.first_idx + 1, cd.last_idx, rc);
1081
1082         if (cfg)
1083                 cfg->cfg_last_idx = cd.last_idx;
1084
1085 parse_out:
1086         rc2 = llog_close(llh);
1087         if (rc == 0)
1088                 rc = rc2;
1089
1090         RETURN(rc);
1091 }
1092
1093 int class_config_dump_handler(struct llog_handle * handle,
1094                               struct llog_rec_hdr *rec, void *data)
1095 {
1096         int cfg_len = rec->lrh_len;
1097         char *cfg_buf = (char*) (rec + 1);
1098         char *outstr, *ptr, *end;
1099         int rc = 0;
1100         ENTRY;
1101
1102         OBD_ALLOC(outstr, 256);
1103         end = outstr + 256;
1104         ptr = outstr;
1105         if (!outstr) {
1106                 RETURN(-ENOMEM);
1107         }
1108         if (rec->lrh_type == OBD_CFG_REC) {
1109                 struct lustre_cfg *lcfg;
1110                 int i;
1111
1112                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1113                 if (rc)
1114                         GOTO(out, rc);
1115                 lcfg = (struct lustre_cfg *)cfg_buf;
1116
1117                 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1118                                 lcfg->lcfg_command);
1119                 if (lcfg->lcfg_flags) {
1120                         ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1121                                         lcfg->lcfg_flags);
1122                 }
1123                 if (lcfg->lcfg_num) {
1124                         ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1125                                         lcfg->lcfg_num);
1126                 }
1127                 if (lcfg->lcfg_nid) {
1128                         ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n     ",
1129                                         libcfs_nid2str(lcfg->lcfg_nid),
1130                                         lcfg->lcfg_nid);
1131                 }
1132                 if (lcfg->lcfg_command == LCFG_MARKER) {
1133                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1134                         ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1135                                         marker->cm_step, marker->cm_flags,
1136                                         marker->cm_tgtname, marker->cm_comment);
1137                 } else {
1138                         for (i = 0; i <  lcfg->lcfg_bufcount; i++) {
1139                                 ptr += snprintf(ptr, end-ptr, "%d:%s  ", i,
1140                                                 lustre_cfg_string(lcfg, i));
1141                         }
1142                 }
1143                 LCONSOLE(D_WARNING, "   %s\n", outstr);
1144         } else {
1145                 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1146                 rc = -EINVAL;
1147         }
1148 out:
1149         OBD_FREE(outstr, 256);
1150         RETURN(rc);
1151 }
1152
1153 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1154                            struct config_llog_instance *cfg)
1155 {
1156         struct llog_handle *llh;
1157         int rc, rc2;
1158         ENTRY;
1159
1160         LCONSOLE_INFO("Dumping config log %s\n", name);
1161
1162         rc = llog_create(ctxt, &llh, NULL, name);
1163         if (rc)
1164                 RETURN(rc);
1165
1166         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1167         if (rc)
1168                 GOTO(parse_out, rc);
1169
1170         rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1171 parse_out:
1172         rc2 = llog_close(llh);
1173         if (rc == 0)
1174                 rc = rc2;
1175
1176         LCONSOLE_INFO("End config log %s\n", name);
1177         RETURN(rc);
1178
1179 }
1180
1181 /* Cleanup and detach */
1182 int class_manual_cleanup(struct obd_device *obd)
1183 {
1184         struct lustre_cfg *lcfg;
1185         struct lustre_cfg_bufs bufs;
1186         int rc;
1187         char flags[3]="";
1188         ENTRY;
1189
1190         if (!obd) {
1191                 CERROR("empty cleanup\n");
1192                 RETURN(-EALREADY);
1193         }
1194
1195         if (obd->obd_force)
1196                 strcat(flags, "F");
1197         if (obd->obd_fail)
1198                 strcat(flags, "A");
1199
1200         CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1201                obd->obd_name, flags);
1202
1203         lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1204         lustre_cfg_bufs_set_string(&bufs, 1, flags);
1205         lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1206
1207         rc = class_process_config(lcfg);
1208         if (rc) {
1209                 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1210                 GOTO(out, rc);
1211         }
1212
1213         /* the lcfg is almost the same for both ops */
1214         lcfg->lcfg_command = LCFG_DETACH;
1215         rc = class_process_config(lcfg);
1216         if (rc)
1217                 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1218 out:
1219         lustre_cfg_free(lcfg);
1220         RETURN(rc);
1221 }
1222