lustre/obdclass/obd_config.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (c) 2001-2006 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of the Lustre file system, http://www.lustre.org
   7  *   Lustre is a trademark of Cluster File Systems, Inc.
   8  *
   9  *   You may have signed or agreed to another license before downloading
  10  *   this software.  If so, you are bound by the terms and conditions
  11  *   of that agreement, and the following does not apply to you.  See the
  12  *   LICENSE file included with this distribution for more information.
  13  *
  14  *   If you did not agree to a different license, then this copy of Lustre
  15  *   is open source software; you can redistribute it and/or modify it
  16  *   under the terms of version 2 of the GNU General Public License as
  17  *   published by the Free Software Foundation.
  18  *
  19  *   In either case, Lustre is distributed in the hope that it will be
  20  *   useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  21  *   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *   license text for more details.
  23  *
  24  * Config API
  25  *
  26  */
  27
  28 #define DEBUG_SUBSYSTEM S_CLASS
  29 #ifdef __KERNEL__
  30 #include <obd_class.h>
  31 #include <linux/string.h>
  32 #else
  33 #include <liblustre.h>
  34 #include <obd_class.h>
  35 #include <obd.h>
  36 #endif
  37 #include <lustre_log.h>
  38 #include <lprocfs_status.h>
  39 #include <libcfs/list.h>
  40 #include <lustre_param.h>
  41 #include <class_hash.h>
  42
  43 extern struct lustre_hash_operations uuid_hash_operations;
  44 extern struct lustre_hash_operations nid_hash_operations;
  45
  46 /*********** string parsing utils *********/
  47
  48 /* returns 0 if we find this key in the buffer, else 1 */
  49 int class_find_param(char *buf, char *key, char **valp)
  50 {
  51         char *ptr;
  52
  53         if (!buf)
  54                 return 1;
  55
  56         if ((ptr = strstr(buf, key)) == NULL)
  57                 return 1;
  58
  59         if (valp)
  60                 *valp = ptr + strlen(key);
  61
  62         return 0;
  63 }
  64
  65 /* returns 0 if this is the first key in the buffer, else 1.
  66    valp points to first char after key. */
  67 int class_match_param(char *buf, char *key, char **valp)
  68 {
  69         if (!buf)
  70                 return 1;
  71
  72         if (memcmp(buf, key, strlen(key)) != 0)
  73                 return 1;
  74
  75         if (valp)
  76                 *valp = buf + strlen(key);
  77
  78         return 0;
  79 }
  80
  81 /* 0 is good nid,
  82    1 not found
  83    < 0 error
  84    endh is set to next separator */
  85 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
  86 {
  87         char tmp, *endp;
  88
  89         if (!buf)
  90                 return 1;
  91         while (*buf == ',' || *buf == ':')
  92                 buf++;
  93         if (*buf == ' ' || *buf == '/' || *buf == '\0')
  94                 return 1;
  95
  96         /* nid separators or end of nids */
  97         endp = strpbrk(buf, ",: /");
  98         if (endp == NULL)
  99                 endp = buf + strlen(buf);
 100
 101         tmp = *endp;
 102         *endp = '\0';
 103         *nid = libcfs_str2nid(buf);
 104         if (*nid == LNET_NID_ANY) {
 105                 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
 106                 *endp = tmp;
 107                 return -EINVAL;
 108         }
 109         *endp = tmp;
 110
 111         if (endh)
 112                 *endh = endp;
 113         CDEBUG(D_INFO, "Nid %s\n", libcfs_nid2str(*nid));
 114         return 0;
 115 }
 116
 117 EXPORT_SYMBOL(class_find_param);
 118 EXPORT_SYMBOL(class_match_param);
 119 EXPORT_SYMBOL(class_parse_nid);
 120
 121 /********************** class fns **********************/
 122
 123 /* Create a new device and set the type, name and uuid.  If
 124  * successful, the new device can be accessed by either name or uuid.
 125  */
 126 int class_attach(struct lustre_cfg *lcfg)
 127 {
 128         struct obd_device *obd = NULL;
 129         char *typename, *name, *uuid;
 130         int rc, len;
 131         ENTRY;
 132
 133         if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
 134                 CERROR("No type passed!\n");
 135                 RETURN(-EINVAL);
 136         }
 137         typename = lustre_cfg_string(lcfg, 1);
 138
 139         if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
 140                 CERROR("No name passed!\n");
 141                 RETURN(-EINVAL);
 142         }
 143         name = lustre_cfg_string(lcfg, 0);
 144
 145         if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
 146                 CERROR("No UUID passed!\n");
 147                 RETURN(-EINVAL);
 148         }
 149         uuid = lustre_cfg_string(lcfg, 2);
 150
 151         CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
 152                MKSTR(typename), MKSTR(name), MKSTR(uuid));
 153
 154         obd = class_newdev(typename, name);
 155         if (IS_ERR(obd)) {
 156                 /* Already exists or out of obds */
 157                 rc = PTR_ERR(obd);
 158                 obd = NULL;
 159                 CERROR("Cannot create device %s of type %s : %d\n",
 160                        name, typename, rc);
 161                 GOTO(out, rc);
 162         }
 163         LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
 164                  name, typename);
 165         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
 166                  "obd %p obd_magic %08X != %08X\n",
 167                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 168         LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, "%p obd_name %s != %s\n",
 169                  obd, obd->obd_name, name);
 170
 171         CFS_INIT_LIST_HEAD(&obd->obd_exports);
 172         CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
 173         spin_lock_init(&obd->obd_dev_lock);
 174         sema_init(&obd->obd_dev_sem, 1);
 175         sema_init(&obd->obd_proc_exp_sem, 1);
 176         spin_lock_init(&obd->obd_osfs_lock);
 177         /* obd->obd_osfs_age must be set to a value in the distant
 178          * past to guarantee a fresh statfs is fetched on mount. */
 179         obd->obd_osfs_age = cfs_time_shift_64(-1000);
 180
 181         /* XXX belongs in setup not attach  */
 182         /* recovery data */
 183         cfs_init_timer(&obd->obd_recovery_timer);
 184         spin_lock_init(&obd->obd_processing_task_lock);
 185         cfs_waitq_init(&obd->obd_next_transno_waitq);
 186         cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
 187         CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
 188         CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
 189         CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
 190
 191         spin_lock_init(&obd->obd_uncommitted_replies_lock);
 192         CFS_INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
 193
 194         len = strlen(uuid);
 195         if (len >= sizeof(obd->obd_uuid)) {
 196                 CERROR("uuid must be < "LPSZ" bytes long\n",
 197                        sizeof(obd->obd_uuid));
 198                 GOTO(out, rc = -EINVAL);
 199         }
 200         memcpy(obd->obd_uuid.uuid, uuid, len);
 201
 202         /* do the attach */
 203         if (OBP(obd, attach)) {
 204                 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
 205                 if (rc)
 206                         GOTO(out, rc = -EINVAL);
 207         }
 208
 209         /* Detach drops this */
 210         spin_lock(&obd->obd_dev_lock);
 211         atomic_set(&obd->obd_refcount, 1);
 212         spin_unlock(&obd->obd_dev_lock);
 213
 214         obd->obd_attached = 1;
 215         CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
 216                obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
 217         RETURN(0);
 218  out:
 219         if (obd != NULL) {
 220                 class_release_dev(obd);
 221         }
 222         return rc;
 223 }
 224
 225 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 226 {
 227         int err = 0;
 228         struct obd_export *exp;
 229         ENTRY;
 230
 231         LASSERT(obd != NULL);
 232         LASSERTF(obd == class_num2obd(obd->obd_minor), "obd %p != obd_devs[%d] %p\n",
 233                  obd, obd->obd_minor, class_num2obd(obd->obd_minor));
 234         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, "obd %p obd_magic %08x != %08x\n",
 235                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 236
 237         /* have we attached a type to this device? */
 238         if (!obd->obd_attached) {
 239                 CERROR("Device %d not attached\n", obd->obd_minor);
 240                 RETURN(-ENODEV);
 241         }
 242
 243         if (obd->obd_set_up) {
 244                 CERROR("Device %d already setup (type %s)\n",
 245                        obd->obd_minor, obd->obd_type->typ_name);
 246                 RETURN(-EEXIST);
 247         }
 248
 249         /* is someone else setting us up right now? (attach inits spinlock) */
 250         spin_lock(&obd->obd_dev_lock);
 251         if (obd->obd_starting) {
 252                 spin_unlock(&obd->obd_dev_lock);
 253                 CERROR("Device %d setup in progress (type %s)\n",
 254                        obd->obd_minor, obd->obd_type->typ_name);
 255                 RETURN(-EEXIST);
 256         }
 257         /* just leave this on forever.  I can't use obd_set_up here because
 258            other fns check that status, and we're not actually set up yet. */
 259         obd->obd_starting = 1;
 260
 261         /* create an uuid-export hash body */
 262         err = lustre_hash_init(&obd->obd_uuid_hash_body, "UUID_HASH",
 263                                128, &uuid_hash_operations);
 264         if (err) {
 265                 spin_unlock(&obd->obd_dev_lock);
 266                 GOTO(err_hash, err);
 267         }
 268
 269         /* create a nid-export hash body */
 270         err = lustre_hash_init(&obd->obd_nid_hash_body, "NID_HASH",
 271                                128, &nid_hash_operations);
 272         spin_unlock(&obd->obd_dev_lock);
 273         if (err)
 274                 GOTO(err_hash, err);
 275
 276         exp = class_new_export(obd, &obd->obd_uuid);
 277         if (IS_ERR(exp))
 278                 RETURN(PTR_ERR(exp));
 279         obd->obd_self_export = exp;
 280         list_del_init(&exp->exp_obd_chain_timed);
 281         class_export_put(exp);
 282
 283         err = obd_setup(obd, lcfg);
 284         if (err)
 285                 GOTO(err_exp, err);
 286
 287         obd->obd_set_up = 1;
 288
 289         spin_lock(&obd->obd_dev_lock);
 290         /* cleanup drops this */
 291         class_incref(obd);
 292         spin_unlock(&obd->obd_dev_lock);
 293
 294         CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
 295                obd->obd_name, obd->obd_uuid.uuid);
 296
 297         RETURN(0);
 298
 299 err_exp:
 300         class_unlink_export(obd->obd_self_export);
 301         obd->obd_self_export = NULL;
 302 err_hash:
 303         lustre_hash_exit(&obd->obd_uuid_hash_body);
 304         lustre_hash_exit(&obd->obd_nid_hash_body);
 305         obd->obd_starting = 0;
 306         CERROR("setup %s failed (%d)\n", obd->obd_name, err);
 307         RETURN(err);
 308 }
 309
 310 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
 311 {
 312         ENTRY;
 313
 314         if (obd->obd_set_up) {
 315                 CERROR("OBD device %d still set up\n", obd->obd_minor);
 316                 RETURN(-EBUSY);
 317         }
 318
 319         spin_lock(&obd->obd_dev_lock);
 320         if (!obd->obd_attached) {
 321                 spin_unlock(&obd->obd_dev_lock);
 322                 CERROR("OBD device %d not attached\n", obd->obd_minor);
 323                 RETURN(-ENODEV);
 324         }
 325         obd->obd_attached = 0;
 326         spin_unlock(&obd->obd_dev_lock);
 327
 328         CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
 329                obd->obd_name, obd->obd_uuid.uuid);
 330
 331         class_decref(obd);
 332
 333         /* not strictly necessary, but cleans up eagerly */
 334         obd_zombie_impexp_cull();
 335
 336         RETURN(0);
 337 }
 338
 339 static void dump_exports(struct obd_device *obd)
 340 {
 341         struct obd_export *exp, *n;
 342
 343         list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
 344                 struct ptlrpc_reply_state *rs;
 345                 struct ptlrpc_reply_state *first_reply = NULL;
 346                 int                        nreplies = 0;
 347
 348                 list_for_each_entry (rs, &exp->exp_outstanding_replies,
 349                                      rs_exp_list) {
 350                         if (nreplies == 0)
 351                                 first_reply = rs;
 352                         nreplies++;
 353                 }
 354
 355                 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
 356                        obd->obd_name, exp, exp->exp_client_uuid.uuid,
 357                        obd_export_nid2str(exp),
 358                        atomic_read(&exp->exp_refcount),
 359                        exp->exp_failed, nreplies, first_reply,
 360                        nreplies > 3 ? "..." : "");
 361         }
 362 }
 363
 364 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
 365 {
 366         int err = 0;
 367         char *flag;
 368         ENTRY;
 369
 370         OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
 371
 372         if (!obd->obd_set_up) {
 373                 CERROR("Device %d not setup\n", obd->obd_minor);
 374                 RETURN(-ENODEV);
 375         }
 376
 377         spin_lock(&obd->obd_dev_lock);
 378         if (obd->obd_stopping) {
 379                 spin_unlock(&obd->obd_dev_lock);
 380                 CERROR("OBD %d already stopping\n", obd->obd_minor);
 381                 RETURN(-ENODEV);
 382         }
 383         /* Leave this on forever */
 384         obd->obd_stopping = 1;
 385         spin_unlock(&obd->obd_dev_lock);
 386
 387         if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
 388                 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
 389                         switch (*flag) {
 390                         case 'F':
 391                                 obd->obd_force = 1;
 392                                 break;
 393                         case 'A':
 394                                 LCONSOLE_WARN("Failing over %s\n",
 395                                               obd->obd_name);
 396                                 obd->obd_fail = 1;
 397                                 obd->obd_no_transno = 1;
 398                                 obd->obd_no_recov = 1;
 399                                 /* Set the obd readonly if we can */
 400                                 if (OBP(obd, iocontrol))
 401                                         obd_iocontrol(OBD_IOC_SET_READONLY,
 402                                                       obd->obd_self_export,
 403                                                       0, NULL, NULL);
 404                                 break;
 405                         default:
 406                                 CERROR("unrecognised flag '%c'\n",
 407                                        *flag);
 408                         }
 409         }
 410
 411         /* The three references that should be remaining are the
 412          * obd_self_export and the attach and setup references. */
 413         if (atomic_read(&obd->obd_refcount) > 3) {
 414 #if 0           /* We should never fail to cleanup with mountconf */
 415                 if (!(obd->obd_fail || obd->obd_force)) {
 416                         CERROR("OBD %s is still busy with %d references\n"
 417                                "You should stop active file system users,"
 418                                " or use the --force option to cleanup.\n",
 419                                obd->obd_name, atomic_read(&obd->obd_refcount));
 420                         dump_exports(obd);
 421                         /* Allow a failed cleanup to try again. */
 422                         obd->obd_stopping = 0;
 423                 }
 424 #endif
 425                 /* refcounf - 3 might be the number of real exports
 426                    (excluding self export). But class_incref is called
 427                    by other things as well, so don't count on it. */
 428                 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
 429                        obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
 430                 dump_exports(obd);
 431                 class_disconnect_exports(obd);
 432         }
 433         LASSERT(obd->obd_self_export);
 434
 435         /* destroy an uuid-export hash body */
 436         lustre_hash_exit(&obd->obd_uuid_hash_body);
 437
 438         /* destroy a nid-export hash body */
 439         lustre_hash_exit(&obd->obd_nid_hash_body);
 440
 441         /* Precleanup stage 1, we must make sure all exports (other than the
 442            self-export) get destroyed. */
 443         err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
 444         if (err)
 445                 CERROR("Precleanup %s returned %d\n",
 446                        obd->obd_name, err);
 447
 448         class_decref(obd);
 449         obd->obd_set_up = 0;
 450         RETURN(0);
 451 }
 452
 453 struct obd_device *class_incref(struct obd_device *obd)
 454 {
 455         atomic_inc(&obd->obd_refcount);
 456         CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
 457                atomic_read(&obd->obd_refcount));
 458
 459         return obd;
 460 }
 461
 462 void class_decref(struct obd_device *obd)
 463 {
 464         int err;
 465         int refs;
 466
 467         spin_lock(&obd->obd_dev_lock);
 468         atomic_dec(&obd->obd_refcount);
 469         refs = atomic_read(&obd->obd_refcount);
 470         spin_unlock(&obd->obd_dev_lock);
 471
 472         CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
 473
 474         if ((refs == 1) && obd->obd_stopping) {
 475                 /* All exports (other than the self-export) have been
 476                    destroyed; there should be no more in-progress ops
 477                    by this point.*/
 478                 /* if we're not stopping, we didn't finish setup */
 479                 /* Precleanup stage 2,  do other type-specific
 480                    cleanup requiring the self-export. */
 481                 err = obd_precleanup(obd, OBD_CLEANUP_SELF_EXP);
 482                 if (err)
 483                         CERROR("Precleanup %s returned %d\n",
 484                                obd->obd_name, err);
 485
 486                 spin_lock(&obd->obd_self_export->exp_lock);
 487                 obd->obd_self_export->exp_flags |=
 488                         (obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 489                         (obd->obd_force ? OBD_OPT_FORCE : 0);
 490                 spin_unlock(&obd->obd_self_export->exp_lock);
 491
 492                 /* note that we'll recurse into class_decref again */
 493                 class_unlink_export(obd->obd_self_export);
 494                 return;
 495         }
 496
 497         if (refs == 0) {
 498                 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
 499                        obd->obd_name, obd->obd_uuid.uuid);
 500                 LASSERT(!obd->obd_attached);
 501                 if (obd->obd_stopping) {
 502                         /* If we're not stopping, we were never set up */
 503                         err = obd_cleanup(obd);
 504                         if (err)
 505                                 CERROR("Cleanup %s returned %d\n",
 506                                        obd->obd_name, err);
 507                 }
 508                 if (OBP(obd, detach)) {
 509                         err = OBP(obd,detach)(obd);
 510                         if (err)
 511                                 CERROR("Detach returned %d\n", err);
 512                 }
 513                 class_release_dev(obd);
 514         }
 515 }
 516
 517 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 518 {
 519         struct obd_import *imp;
 520         struct obd_uuid uuid;
 521         int rc;
 522         ENTRY;
 523
 524         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 525             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 526                 CERROR("invalid conn_uuid\n");
 527                 RETURN(-EINVAL);
 528         }
 529         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 530             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
 531             strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
 532                 CERROR("can't add connection on non-client dev\n");
 533                 RETURN(-EINVAL);
 534         }
 535
 536         imp = obd->u.cli.cl_import;
 537         if (!imp) {
 538                 CERROR("try to add conn on immature client dev\n");
 539                 RETURN(-EINVAL);
 540         }
 541
 542         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 543         rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
 544
 545         RETURN(rc);
 546 }
 547
 548 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 549 {
 550         struct obd_import *imp;
 551         struct obd_uuid uuid;
 552         int rc;
 553         ENTRY;
 554
 555         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 556             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 557                 CERROR("invalid conn_uuid\n");
 558                 RETURN(-EINVAL);
 559         }
 560         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 561             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 562                 CERROR("can't del connection on non-client dev\n");
 563                 RETURN(-EINVAL);
 564         }
 565
 566         imp = obd->u.cli.cl_import;
 567         if (!imp) {
 568                 CERROR("try to del conn on immature client dev\n");
 569                 RETURN(-EINVAL);
 570         }
 571
 572         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 573         rc = obd_del_conn(imp, &uuid);
 574
 575         RETURN(rc);
 576 }
 577
 578 int class_sec_flavor(struct obd_device *obd, struct lustre_cfg *lcfg)
 579 {
 580         struct sec_flavor_config *conf;
 581         ENTRY;
 582
 583         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 584             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 585                 CERROR("Can't set security flavor on obd %s\n",
 586                        obd->obd_type->typ_name);
 587                 RETURN(-EINVAL);
 588         }
 589
 590         if (LUSTRE_CFG_BUFLEN(lcfg, 1) != sizeof(*conf)) {
 591                 CERROR("invalid data\n");
 592                 RETURN(-EINVAL);
 593         }
 594
 595         conf = &obd->u.cli.cl_sec_conf;
 596         memcpy(conf, lustre_cfg_buf(lcfg, 1), sizeof(*conf));
 597
 598 #ifdef __BIG_ENDIAN
 599         __swab32s(&conf->sfc_rpc_flavor);
 600         __swab32s(&conf->sfc_bulk_csum);
 601         __swab32s(&conf->sfc_bulk_priv);
 602         __swab32s(&conf->sfc_flags);
 603 #endif
 604
 605         RETURN(0);
 606 }
 607
 608 CFS_LIST_HEAD(lustre_profile_list);
 609
 610 struct lustre_profile *class_get_profile(const char * prof)
 611 {
 612         struct lustre_profile *lprof;
 613
 614         ENTRY;
 615         list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
 616                 if (!strcmp(lprof->lp_profile, prof)) {
 617                         RETURN(lprof);
 618                 }
 619         }
 620         RETURN(NULL);
 621 }
 622
 623 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
 624                       int mdclen, char *mdc)
 625 {
 626         struct lustre_profile *lprof;
 627         int err = 0;
 628         ENTRY;
 629
 630         CDEBUG(D_CONFIG, "Add profile %s\n", prof);
 631
 632         OBD_ALLOC(lprof, sizeof(*lprof));
 633         if (lprof == NULL)
 634                 RETURN(-ENOMEM);
 635         CFS_INIT_LIST_HEAD(&lprof->lp_list);
 636
 637         LASSERT(proflen == (strlen(prof) + 1));
 638         OBD_ALLOC(lprof->lp_profile, proflen);
 639         if (lprof->lp_profile == NULL)
 640                 GOTO(out, err = -ENOMEM);
 641         memcpy(lprof->lp_profile, prof, proflen);
 642
 643         LASSERT(osclen == (strlen(osc) + 1));
 644         OBD_ALLOC(lprof->lp_dt, osclen);
 645         if (lprof->lp_dt == NULL)
 646                 GOTO(out, err = -ENOMEM);
 647         memcpy(lprof->lp_dt, osc, osclen);
 648
 649         if (mdclen > 0) {
 650                 LASSERT(mdclen == (strlen(mdc) + 1));
 651                 OBD_ALLOC(lprof->lp_md, mdclen);
 652                 if (lprof->lp_md == NULL)
 653                         GOTO(out, err = -ENOMEM);
 654                 memcpy(lprof->lp_md, mdc, mdclen);
 655         }
 656
 657         list_add(&lprof->lp_list, &lustre_profile_list);
 658         RETURN(err);
 659
 660 out:
 661         if (lprof->lp_md)
 662                 OBD_FREE(lprof->lp_md, mdclen);
 663         if (lprof->lp_dt)
 664                 OBD_FREE(lprof->lp_dt, osclen);
 665         if (lprof->lp_profile)
 666                 OBD_FREE(lprof->lp_profile, proflen);
 667         OBD_FREE(lprof, sizeof(*lprof));
 668         RETURN(err);
 669 }
 670
 671 void class_del_profile(const char *prof)
 672 {
 673         struct lustre_profile *lprof;
 674         ENTRY;
 675
 676         CDEBUG(D_CONFIG, "Del profile %s\n", prof);
 677
 678         lprof = class_get_profile(prof);
 679         if (lprof) {
 680                 list_del(&lprof->lp_list);
 681                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 682                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 683                 if (lprof->lp_md)
 684                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 685                 OBD_FREE(lprof, sizeof *lprof);
 686         }
 687         EXIT;
 688 }
 689
 690 /* COMPAT_146 */
 691 void class_del_profiles(void)
 692 {
 693         struct lustre_profile *lprof, *n;
 694         ENTRY;
 695
 696         list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
 697                 list_del(&lprof->lp_list);
 698                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 699                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 700                 if (lprof->lp_md)
 701                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 702                 OBD_FREE(lprof, sizeof *lprof);
 703         }
 704         EXIT;
 705 }
 706
 707 /* We can't call ll_process_config directly because it lives in a module that
 708    must be loaded after this one. */
 709 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
 710
 711 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
 712 {
 713         client_process_config = cpc;
 714 }
 715 EXPORT_SYMBOL(lustre_register_client_process_config);
 716
 717 int class_process_config(struct lustre_cfg *lcfg)
 718 {
 719         struct obd_device *obd;
 720         int err;
 721
 722         LASSERT(lcfg && !IS_ERR(lcfg));
 723         CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
 724
 725         /* Commands that don't need a device */
 726         switch(lcfg->lcfg_command) {
 727         case LCFG_ATTACH: {
 728                 err = class_attach(lcfg);
 729                 GOTO(out, err);
 730         }
 731         case LCFG_ADD_UUID: {
 732                 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
 733                        " (%s)\n", lustre_cfg_string(lcfg, 1),
 734                        lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
 735
 736                 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
 737                 GOTO(out, err);
 738         }
 739         case LCFG_DEL_UUID: {
 740                 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
 741                        (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
 742                        ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
 743
 744                 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
 745                 GOTO(out, err);
 746         }
 747         case LCFG_MOUNTOPT: {
 748                 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
 749                        lustre_cfg_string(lcfg, 1),
 750                        lustre_cfg_string(lcfg, 2),
 751                        lustre_cfg_string(lcfg, 3));
 752                 /* set these mount options somewhere, so ll_fill_super
 753                  * can find them. */
 754                 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
 755                                         lustre_cfg_string(lcfg, 1),
 756                                         LUSTRE_CFG_BUFLEN(lcfg, 2),
 757                                         lustre_cfg_string(lcfg, 2),
 758                                         LUSTRE_CFG_BUFLEN(lcfg, 3),
 759                                         lustre_cfg_string(lcfg, 3));
 760                 GOTO(out, err);
 761         }
 762         case LCFG_DEL_MOUNTOPT: {
 763                 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
 764                        lustre_cfg_string(lcfg, 1));
 765                 class_del_profile(lustre_cfg_string(lcfg, 1));
 766                 GOTO(out, err = 0);
 767         }
 768         case LCFG_SET_TIMEOUT: {
 769                 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
 770                        obd_timeout, lcfg->lcfg_num);
 771                 obd_timeout = max(lcfg->lcfg_num, 1U);
 772                 obd_health_check_timeout = HEALTH_CHECK_TIMEOUT;
 773                 GOTO(out, err = 0);
 774         }
 775         case LCFG_SET_UPCALL: {
 776                 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
 777                 /* COMPAT_146 Don't fail on old configs */
 778                 GOTO(out, err = 0);
 779         }
 780         case LCFG_MARKER: {
 781                 struct cfg_marker *marker;
 782                 marker = lustre_cfg_buf(lcfg, 1);
 783                 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
 784                        marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
 785                 GOTO(out, err = 0);
 786         }
 787         case LCFG_PARAM: {
 788                 /* llite has no obd */
 789                 if ((class_match_param(lustre_cfg_string(lcfg, 1),
 790                                        PARAM_LLITE, 0) == 0) &&
 791                     client_process_config) {
 792                         err = (*client_process_config)(lcfg);
 793                         GOTO(out, err);
 794                 }
 795                 /* Fall through */
 796                 break;
 797         }
 798         }
 799
 800         /* Commands that require a device */
 801         obd = class_name2obd(lustre_cfg_string(lcfg, 0));
 802         if (obd == NULL) {
 803                 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
 804                         CERROR("this lcfg command requires a device name\n");
 805                 else
 806                         CERROR("no device for: %s\n",
 807                                lustre_cfg_string(lcfg, 0));
 808
 809                 GOTO(out, err = -EINVAL);
 810         }
 811
 812         switch(lcfg->lcfg_command) {
 813         case LCFG_SETUP: {
 814                 err = class_setup(obd, lcfg);
 815                 GOTO(out, err);
 816         }
 817         case LCFG_DETACH: {
 818                 err = class_detach(obd, lcfg);
 819                 GOTO(out, err = 0);
 820         }
 821         case LCFG_CLEANUP: {
 822                 err = class_cleanup(obd, lcfg);
 823                 GOTO(out, err = 0);
 824         }
 825         case LCFG_ADD_CONN: {
 826                 err = class_add_conn(obd, lcfg);
 827                 GOTO(out, err = 0);
 828         }
 829         case LCFG_DEL_CONN: {
 830                 err = class_del_conn(obd, lcfg);
 831                 GOTO(out, err = 0);
 832         }
 833         case LCFG_SEC_FLAVOR: {
 834                 err = class_sec_flavor(obd, lcfg);
 835                 GOTO(out, err = 0);
 836         }
 837         default: {
 838                 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
 839                 GOTO(out, err);
 840
 841         }
 842         }
 843 out:
 844         if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
 845                 CWARN("Ignoring error %d on optional command %#x\n", err,
 846                       lcfg->lcfg_command);
 847                 err = 0;
 848         }
 849         return err;
 850 }
 851
 852 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 853                              struct lustre_cfg *lcfg, void *data)
 854 {
 855 #ifdef __KERNEL__
 856         struct lprocfs_vars *var;
 857         char *key, *sval;
 858         int i, keylen, vallen;
 859         int matched = 0, j = 0;
 860         int rc = 0;
 861         ENTRY;
 862
 863         if (lcfg->lcfg_command != LCFG_PARAM) {
 864                 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
 865                 RETURN(-EINVAL);
 866         }
 867
 868         /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
 869            or   lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
 870            or   lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
 871         for (i = 1; i < lcfg->lcfg_bufcount; i++) {
 872                 key = lustre_cfg_buf(lcfg, i);
 873                 /* Strip off prefix */
 874                 class_match_param(key, prefix, &key);
 875                 sval = strchr(key, '=');
 876                 if (!sval || (*(sval + 1) == 0)) {
 877                         CERROR("Can't parse param %s\n", key);
 878                         rc = -EINVAL;
 879                         /* continue parsing other params */
 880                         continue;
 881                 }
 882                 keylen = sval - key;
 883                 sval++;
 884                 vallen = strlen(sval);
 885                 matched = 0;
 886                 j = 0;
 887                 /* Search proc entries */
 888                 while (lvars[j].name) {
 889                         var = &lvars[j];
 890                         if (class_match_param(key, (char *)var->name, 0) == 0 &&
 891                             keylen == strlen(var->name)) {
 892                                 matched++;
 893                                 rc = -EROFS;
 894                                 if (var->write_fptr) {
 895                                         mm_segment_t oldfs;
 896                                         oldfs = get_fs();
 897                                         set_fs(KERNEL_DS);
 898                                         rc = (var->write_fptr)(NULL, sval,
 899                                                                vallen, data);
 900                                         set_fs(oldfs);
 901                                 }
 902                                 if (rc < 0)
 903                                         CERROR("writing proc entry %s err %d\n",
 904                                                var->name, rc);
 905                                 break;
 906                         }
 907                         j++;
 908                 }
 909                 if (!matched) {
 910                         CERROR("%s: unknown param %s\n",
 911                                (char *)lustre_cfg_string(lcfg, 0), key);
 912                         rc = -EINVAL;
 913                         /* continue parsing other params */
 914                 } else {
 915                         LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
 916                                       (char *)lustre_cfg_string(lcfg, 0),
 917                                       (int)strlen(prefix) - 1, prefix,
 918                                       (int)(sval - key - 1), key, sval);
 919                 }
 920         }
 921
 922         if (rc > 0)
 923                 rc = 0;
 924         RETURN(rc);
 925 #else
 926         CDEBUG(D_CONFIG, "liblustre can't process params.\n");
 927         /* Don't throw config error */
 928         RETURN(0);
 929 #endif
 930 }
 931
 932 int class_config_dump_handler(struct llog_handle * handle,
 933                               struct llog_rec_hdr *rec, void *data);
 934
 935 #ifdef __KERNEL__
 936 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
 937 #else
 938 #define lustre_check_exclusion(a,b)  0
 939 #endif
 940
 941 static int class_config_llog_handler(struct llog_handle * handle,
 942                                      struct llog_rec_hdr *rec, void *data)
 943 {
 944         struct config_llog_instance *clli = data;
 945         int cfg_len = rec->lrh_len;
 946         char *cfg_buf = (char*) (rec + 1);
 947         int rc = 0;
 948         ENTRY;
 949
 950         //class_config_dump_handler(handle, rec, data);
 951
 952         switch (rec->lrh_type) {
 953         case OBD_CFG_REC: {
 954                 struct lustre_cfg *lcfg, *lcfg_new;
 955                 struct lustre_cfg_bufs bufs;
 956                 char *inst_name = NULL;
 957                 int inst_len = 0;
 958                 int inst = 0;
 959
 960                 lcfg = (struct lustre_cfg *)cfg_buf;
 961                 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION))
 962                         lustre_swab_lustre_cfg(lcfg);
 963
 964                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
 965                 if (rc)
 966                         GOTO(out, rc);
 967
 968                 /* Figure out config state info */
 969                 if (lcfg->lcfg_command == LCFG_MARKER) {
 970                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
 971                         CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
 972                                clli->cfg_flags, marker->cm_flags);
 973                         if (marker->cm_flags & CM_START) {
 974                                 /* all previous flags off */
 975                                 clli->cfg_flags = CFG_F_MARKER;
 976                                 if (marker->cm_flags & CM_SKIP) {
 977                                         clli->cfg_flags |= CFG_F_SKIP;
 978                                         CDEBUG(D_CONFIG, "SKIP #%d\n",
 979                                                marker->cm_step);
 980                                 } else if ((marker->cm_flags & CM_EXCLUDE) ||
 981                                            lustre_check_exclusion(clli->cfg_sb,
 982                                                           marker->cm_tgtname)) {
 983                                         clli->cfg_flags |= CFG_F_EXCLUDE;
 984                                         CDEBUG(D_CONFIG, "EXCLUDE %d\n",
 985                                                marker->cm_step);
 986                                 }
 987                         } else if (marker->cm_flags & CM_END) {
 988                                 clli->cfg_flags = 0;
 989                         }
 990                 }
 991                 /* A config command without a start marker before it is
 992                    illegal (post 146) */
 993                 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
 994                     !(clli->cfg_flags & CFG_F_MARKER) &&
 995                     (lcfg->lcfg_command != LCFG_MARKER)) {
 996                         CWARN("Config not inside markers, ignoring! "
 997                               "(inst: %s, uuid: %s, flags: %#x)\n",
 998                               clli->cfg_instance ? clli->cfg_instance : "<null>",
 999                               clli->cfg_uuid.uuid, clli->cfg_flags);
1000                         clli->cfg_flags |= CFG_F_SKIP;
1001                 }
1002                 if (clli->cfg_flags & CFG_F_SKIP) {
1003                         CDEBUG(D_CONFIG, "skipping %#x\n",
1004                                clli->cfg_flags);
1005                         rc = 0;
1006                         /* No processing! */
1007                         break;
1008                 }
1009
1010                 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1011                     (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1012                         /* Add inactive instead */
1013                         lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1014
1015                 lustre_cfg_bufs_init(&bufs, lcfg);
1016
1017                 if (clli && clli->cfg_instance &&
1018                     LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1019                         inst = 1;
1020                         inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1021                                 strlen(clli->cfg_instance) + 1;
1022                         OBD_ALLOC(inst_name, inst_len);
1023                         if (inst_name == NULL)
1024                                 GOTO(out, rc = -ENOMEM);
1025                         sprintf(inst_name, "%s-%s",
1026                                 lustre_cfg_string(lcfg, 0),
1027                                 clli->cfg_instance);
1028                         lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1029                         CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1030                                lcfg->lcfg_command, inst_name);
1031                 }
1032
1033                 /* we override the llog's uuid for clients, to insure they
1034                 are unique */
1035                 if (clli && clli->cfg_instance &&
1036                     lcfg->lcfg_command == LCFG_ATTACH) {
1037                         lustre_cfg_bufs_set_string(&bufs, 2,
1038                                                    clli->cfg_uuid.uuid);
1039                 }
1040
1041                 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1042
1043                 lcfg_new->lcfg_num   = lcfg->lcfg_num;
1044                 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1045
1046                 /* XXX Hack to try to remain binary compatible with
1047                  * pre-newconfig logs */
1048                 if (lcfg->lcfg_nal != 0 &&      /* pre-newconfig log? */
1049                     (lcfg->lcfg_nid >> 32) == 0) {
1050                         __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1051
1052                         lcfg_new->lcfg_nid =
1053                                 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1054                         CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1055                               lcfg->lcfg_nal, addr,
1056                               libcfs_nid2str(lcfg_new->lcfg_nid));
1057                 } else {
1058                         lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1059                 }
1060
1061                 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1062
1063                 rc = class_process_config(lcfg_new);
1064                 lustre_cfg_free(lcfg_new);
1065
1066                 if (inst)
1067                         OBD_FREE(inst_name, inst_len);
1068                 break;
1069         }
1070         default:
1071                 CERROR("Unknown llog record type %#x encountered\n",
1072                        rec->lrh_type);
1073                 break;
1074         }
1075 out:
1076         if (rc) {
1077                 CERROR("Err %d on cfg command:\n", rc);
1078                 class_config_dump_handler(handle, rec, data);
1079         }
1080         RETURN(rc);
1081 }
1082
1083 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1084                             struct config_llog_instance *cfg)
1085 {
1086         struct llog_process_cat_data cd = {0, 0};
1087         struct llog_handle *llh;
1088         int rc, rc2;
1089         ENTRY;
1090
1091         CDEBUG(D_INFO, "looking up llog %s\n", name);
1092         rc = llog_create(ctxt, &llh, NULL, name);
1093         if (rc)
1094                 RETURN(rc);
1095
1096         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1097         if (rc)
1098                 GOTO(parse_out, rc);
1099
1100         /* continue processing from where we last stopped to end-of-log */
1101         if (cfg)
1102                 cd.first_idx = cfg->cfg_last_idx;
1103         cd.last_idx = 0;
1104
1105         rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1106
1107         CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1108                cd.first_idx + 1, cd.last_idx, rc);
1109
1110         if (cfg)
1111                 cfg->cfg_last_idx = cd.last_idx;
1112
1113 parse_out:
1114         rc2 = llog_close(llh);
1115         if (rc == 0)
1116                 rc = rc2;
1117
1118         RETURN(rc);
1119 }
1120
1121 int class_config_dump_handler(struct llog_handle * handle,
1122                               struct llog_rec_hdr *rec, void *data)
1123 {
1124         int cfg_len = rec->lrh_len;
1125         char *cfg_buf = (char*) (rec + 1);
1126         char *outstr, *ptr, *end;
1127         int rc = 0;
1128         ENTRY;
1129
1130         OBD_ALLOC(outstr, 256);
1131         end = outstr + 256;
1132         ptr = outstr;
1133         if (!outstr) {
1134                 RETURN(-ENOMEM);
1135         }
1136         if (rec->lrh_type == OBD_CFG_REC) {
1137                 struct lustre_cfg *lcfg;
1138                 int i;
1139
1140                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1141                 if (rc)
1142                         GOTO(out, rc);
1143                 lcfg = (struct lustre_cfg *)cfg_buf;
1144
1145                 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1146                                 lcfg->lcfg_command);
1147                 if (lcfg->lcfg_flags) {
1148                         ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1149                                         lcfg->lcfg_flags);
1150                 }
1151                 if (lcfg->lcfg_num) {
1152                         ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1153                                         lcfg->lcfg_num);
1154                 }
1155                 if (lcfg->lcfg_nid) {
1156                         ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n     ",
1157                                         libcfs_nid2str(lcfg->lcfg_nid),
1158                                         lcfg->lcfg_nid);
1159                 }
1160                 if (lcfg->lcfg_command == LCFG_MARKER) {
1161                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1162                         ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1163                                         marker->cm_step, marker->cm_flags,
1164                                         marker->cm_tgtname, marker->cm_comment);
1165                 } else {
1166                         for (i = 0; i <  lcfg->lcfg_bufcount; i++) {
1167                                 ptr += snprintf(ptr, end-ptr, "%d:%s  ", i,
1168                                                 lustre_cfg_string(lcfg, i));
1169                         }
1170                 }
1171                 LCONSOLE(D_WARNING, "   %s\n", outstr);
1172         } else {
1173                 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1174                 rc = -EINVAL;
1175         }
1176 out:
1177         OBD_FREE(outstr, 256);
1178         RETURN(rc);
1179 }
1180
1181 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1182                            struct config_llog_instance *cfg)
1183 {
1184         struct llog_handle *llh;
1185         int rc, rc2;
1186         ENTRY;
1187
1188         LCONSOLE_INFO("Dumping config log %s\n", name);
1189
1190         rc = llog_create(ctxt, &llh, NULL, name);
1191         if (rc)
1192                 RETURN(rc);
1193
1194         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1195         if (rc)
1196                 GOTO(parse_out, rc);
1197
1198         rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1199 parse_out:
1200         rc2 = llog_close(llh);
1201         if (rc == 0)
1202                 rc = rc2;
1203
1204         LCONSOLE_INFO("End config log %s\n", name);
1205         RETURN(rc);
1206
1207 }
1208
1209 /* Cleanup and detach */
1210 int class_manual_cleanup(struct obd_device *obd)
1211 {
1212         struct lustre_cfg *lcfg;
1213         struct lustre_cfg_bufs bufs;
1214         int rc;
1215         char flags[3]="";
1216         ENTRY;
1217
1218         if (!obd) {
1219                 CERROR("empty cleanup\n");
1220                 RETURN(-EALREADY);
1221         }
1222
1223         if (obd->obd_force)
1224                 strcat(flags, "F");
1225         if (obd->obd_fail)
1226                 strcat(flags, "A");
1227
1228         CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1229                obd->obd_name, flags);
1230
1231         lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1232         lustre_cfg_bufs_set_string(&bufs, 1, flags);
1233         lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1234
1235         rc = class_process_config(lcfg);
1236         if (rc) {
1237                 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1238                 GOTO(out, rc);
1239         }
1240
1241         /* the lcfg is almost the same for both ops */
1242         lcfg->lcfg_command = LCFG_DETACH;
1243         rc = class_process_config(lcfg);
1244         if (rc)
1245                 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1246 out:
1247         lustre_cfg_free(lcfg);
1248         RETURN(rc);
1249 }
1250