lustre/obdclass/obd_config.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see [sun.com URL with a
  20  * copy of GPLv2].
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/obdclass/obd_config.c
  37  *
  38  * Config API
  39  */
  40
  41 #define DEBUG_SUBSYSTEM S_CLASS
  42 #ifdef __KERNEL__
  43 #include <obd_class.h>
  44 #include <linux/string.h>
  45 #else
  46 #include <liblustre.h>
  47 #include <obd_class.h>
  48 #include <obd.h>
  49 #endif
  50 #include <lustre_log.h>
  51 #include <lprocfs_status.h>
  52 #include <libcfs/list.h>
  53 #include <lustre_param.h>
  54 #include <class_hash.h>
  55
  56 extern struct lustre_hash_operations uuid_hash_operations;
  57 extern struct lustre_hash_operations nid_hash_operations;
  58
  59 /*********** string parsing utils *********/
  60
  61 /* returns 0 if we find this key in the buffer, else 1 */
  62 int class_find_param(char *buf, char *key, char **valp)
  63 {
  64         char *ptr;
  65
  66         if (!buf)
  67                 return 1;
  68
  69         if ((ptr = strstr(buf, key)) == NULL)
  70                 return 1;
  71
  72         if (valp)
  73                 *valp = ptr + strlen(key);
  74
  75         return 0;
  76 }
  77
  78 /* returns 0 if this is the first key in the buffer, else 1.
  79    valp points to first char after key. */
  80 int class_match_param(char *buf, char *key, char **valp)
  81 {
  82         if (!buf)
  83                 return 1;
  84
  85         if (memcmp(buf, key, strlen(key)) != 0)
  86                 return 1;
  87
  88         if (valp)
  89                 *valp = buf + strlen(key);
  90
  91         return 0;
  92 }
  93
  94 /* 0 is good nid,
  95    1 not found
  96    < 0 error
  97    endh is set to next separator */
  98 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
  99 {
 100         char tmp, *endp;
 101
 102         if (!buf)
 103                 return 1;
 104         while (*buf == ',' || *buf == ':')
 105                 buf++;
 106         if (*buf == ' ' || *buf == '/' || *buf == '\0')
 107                 return 1;
 108
 109         /* nid separators or end of nids */
 110         endp = strpbrk(buf, ",: /");
 111         if (endp == NULL)
 112                 endp = buf + strlen(buf);
 113
 114         tmp = *endp;
 115         *endp = '\0';
 116         *nid = libcfs_str2nid(buf);
 117         if (*nid == LNET_NID_ANY) {
 118                 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
 119                 *endp = tmp;
 120                 return -EINVAL;
 121         }
 122         *endp = tmp;
 123
 124         if (endh)
 125                 *endh = endp;
 126         CDEBUG(D_INFO, "Nid %s\n", libcfs_nid2str(*nid));
 127         return 0;
 128 }
 129
 130 EXPORT_SYMBOL(class_find_param);
 131 EXPORT_SYMBOL(class_match_param);
 132 EXPORT_SYMBOL(class_parse_nid);
 133
 134 /********************** class fns **********************/
 135
 136 /**
 137  * Create a new device and set the type, name and uuid.  If successful, the new
 138  * device can be accessed by either name or uuid.
 139  */
 140 int class_attach(struct lustre_cfg *lcfg)
 141 {
 142         struct obd_device *obd = NULL;
 143         char *typename, *name, *uuid;
 144         int rc, len;
 145         ENTRY;
 146
 147         if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
 148                 CERROR("No type passed!\n");
 149                 RETURN(-EINVAL);
 150         }
 151         typename = lustre_cfg_string(lcfg, 1);
 152
 153         if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
 154                 CERROR("No name passed!\n");
 155                 RETURN(-EINVAL);
 156         }
 157         name = lustre_cfg_string(lcfg, 0);
 158
 159         if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
 160                 CERROR("No UUID passed!\n");
 161                 RETURN(-EINVAL);
 162         }
 163         uuid = lustre_cfg_string(lcfg, 2);
 164
 165         CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
 166                MKSTR(typename), MKSTR(name), MKSTR(uuid));
 167
 168         obd = class_newdev(typename, name);
 169         if (IS_ERR(obd)) {
 170                 /* Already exists or out of obds */
 171                 rc = PTR_ERR(obd);
 172                 obd = NULL;
 173                 CERROR("Cannot create device %s of type %s : %d\n",
 174                        name, typename, rc);
 175                 GOTO(out, rc);
 176         }
 177         LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
 178                  name, typename);
 179         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
 180                  "obd %p obd_magic %08X != %08X\n",
 181                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 182         LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, "%p obd_name %s != %s\n",
 183                  obd, obd->obd_name, name);
 184
 185         rwlock_init(&obd->obd_pool_lock);
 186         obd->obd_pool_limit = 0;
 187         obd->obd_pool_slv = 0;
 188
 189         CFS_INIT_LIST_HEAD(&obd->obd_exports);
 190         CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
 191         CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
 192         spin_lock_init(&obd->obd_nid_lock);
 193         spin_lock_init(&obd->obd_dev_lock);
 194         sema_init(&obd->obd_dev_sem, 1);
 195         spin_lock_init(&obd->obd_osfs_lock);
 196         /* obd->obd_osfs_age must be set to a value in the distant
 197          * past to guarantee a fresh statfs is fetched on mount. */
 198         obd->obd_osfs_age = cfs_time_shift_64(-1000);
 199
 200         /* XXX belongs in setup not attach  */
 201         /* recovery data */
 202         cfs_init_timer(&obd->obd_recovery_timer);
 203         spin_lock_init(&obd->obd_processing_task_lock);
 204         cfs_waitq_init(&obd->obd_next_transno_waitq);
 205         cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
 206         CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
 207         CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
 208         CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
 209
 210         llog_group_init(&obd->obd_olg, OBD_LLOG_GROUP);
 211
 212         spin_lock_init(&obd->obd_uncommitted_replies_lock);
 213         CFS_INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
 214
 215         len = strlen(uuid);
 216         if (len >= sizeof(obd->obd_uuid)) {
 217                 CERROR("uuid must be < %d bytes long\n",
 218                        (int)sizeof(obd->obd_uuid));
 219                 GOTO(out, rc = -EINVAL);
 220         }
 221         memcpy(obd->obd_uuid.uuid, uuid, len);
 222
 223         /* do the attach */
 224         if (OBP(obd, attach)) {
 225                 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
 226                 if (rc)
 227                         GOTO(out, rc = -EINVAL);
 228         }
 229
 230         /* Detach drops this */
 231         spin_lock(&obd->obd_dev_lock);
 232         atomic_set(&obd->obd_refcount, 1);
 233         spin_unlock(&obd->obd_dev_lock);
 234
 235         obd->obd_attached = 1;
 236         CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
 237                obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
 238         RETURN(0);
 239  out:
 240         if (obd != NULL) {
 241                 class_release_dev(obd);
 242         }
 243         return rc;
 244 }
 245
 246 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 247 {
 248         int err = 0;
 249         struct obd_export *exp;
 250         ENTRY;
 251
 252         LASSERT(obd != NULL);
 253         LASSERTF(obd == class_num2obd(obd->obd_minor), "obd %p != obd_devs[%d] %p\n",
 254                  obd, obd->obd_minor, class_num2obd(obd->obd_minor));
 255         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, "obd %p obd_magic %08x != %08x\n",
 256                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 257
 258         /* have we attached a type to this device? */
 259         if (!obd->obd_attached) {
 260                 CERROR("Device %d not attached\n", obd->obd_minor);
 261                 RETURN(-ENODEV);
 262         }
 263
 264         if (obd->obd_set_up) {
 265                 CERROR("Device %d already setup (type %s)\n",
 266                        obd->obd_minor, obd->obd_type->typ_name);
 267                 RETURN(-EEXIST);
 268         }
 269
 270         /* is someone else setting us up right now? (attach inits spinlock) */
 271         spin_lock(&obd->obd_dev_lock);
 272         if (obd->obd_starting) {
 273                 spin_unlock(&obd->obd_dev_lock);
 274                 CERROR("Device %d setup in progress (type %s)\n",
 275                        obd->obd_minor, obd->obd_type->typ_name);
 276                 RETURN(-EEXIST);
 277         }
 278         /* just leave this on forever.  I can't use obd_set_up here because
 279            other fns check that status, and we're not actually set up yet. */
 280         obd->obd_starting = 1;
 281         spin_unlock(&obd->obd_dev_lock);
 282
 283         /* create an uuid-export hash body */
 284         err = lustre_hash_init(&obd->obd_uuid_hash_body, "UUID_HASH",
 285                                128, &uuid_hash_operations);
 286         if (err)
 287                 GOTO(err_hash, err);
 288
 289         /* create a nid-export hash body */
 290         err = lustre_hash_init(&obd->obd_nid_hash_body, "NID_HASH",
 291                                128, &nid_hash_operations);
 292         if (err)
 293                 GOTO(err_hash, err);
 294
 295         /* create a nid-stats hash body */
 296         err = lustre_hash_init(&obd->obd_nid_stats_hash_body, "NID_STATS",
 297                                128, &nid_stat_hash_operations);
 298         if (err)
 299                 GOTO(err_hash, err);
 300
 301         exp = class_new_export(obd, &obd->obd_uuid);
 302         if (IS_ERR(exp))
 303                 RETURN(PTR_ERR(exp));
 304
 305         obd->obd_self_export = exp;
 306         list_del_init(&exp->exp_obd_chain_timed);
 307         class_export_put(exp);
 308
 309         err = obd_setup(obd, lcfg);
 310         if (err)
 311                 GOTO(err_exp, err);
 312
 313         obd->obd_set_up = 1;
 314
 315         spin_lock(&obd->obd_dev_lock);
 316         /* cleanup drops this */
 317         class_incref(obd);
 318         spin_unlock(&obd->obd_dev_lock);
 319
 320         CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
 321                obd->obd_name, obd->obd_uuid.uuid);
 322
 323         RETURN(0);
 324
 325 err_exp:
 326         class_unlink_export(obd->obd_self_export);
 327         obd->obd_self_export = NULL;
 328 err_hash:
 329         lustre_hash_exit(&obd->obd_uuid_hash_body);
 330         lustre_hash_exit(&obd->obd_nid_hash_body);
 331         lustre_hash_exit(&obd->obd_nid_stats_hash_body);
 332         obd->obd_starting = 0;
 333         CERROR("setup %s failed (%d)\n", obd->obd_name, err);
 334         RETURN(err);
 335 }
 336
 337 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
 338 {
 339         ENTRY;
 340
 341         if (obd->obd_set_up) {
 342                 CERROR("OBD device %d still set up\n", obd->obd_minor);
 343                 RETURN(-EBUSY);
 344         }
 345
 346         spin_lock(&obd->obd_dev_lock);
 347         if (!obd->obd_attached) {
 348                 spin_unlock(&obd->obd_dev_lock);
 349                 CERROR("OBD device %d not attached\n", obd->obd_minor);
 350                 RETURN(-ENODEV);
 351         }
 352         obd->obd_attached = 0;
 353         spin_unlock(&obd->obd_dev_lock);
 354
 355         CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
 356                obd->obd_name, obd->obd_uuid.uuid);
 357
 358         class_decref(obd);
 359
 360         /* not strictly necessary, but cleans up eagerly */
 361         obd_zombie_impexp_cull();
 362
 363         RETURN(0);
 364 }
 365
 366 static void dump_exports(struct obd_device *obd)
 367 {
 368         struct obd_export *exp, *n;
 369
 370         list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
 371                 struct ptlrpc_reply_state *rs;
 372                 struct ptlrpc_reply_state *first_reply = NULL;
 373                 int                        nreplies = 0;
 374
 375                 list_for_each_entry (rs, &exp->exp_outstanding_replies,
 376                                      rs_exp_list) {
 377                         if (nreplies == 0)
 378                                 first_reply = rs;
 379                         nreplies++;
 380                 }
 381
 382                 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
 383                        obd->obd_name, exp, exp->exp_client_uuid.uuid,
 384                        obd_export_nid2str(exp),
 385                        atomic_read(&exp->exp_refcount),
 386                        exp->exp_failed, nreplies, first_reply,
 387                        nreplies > 3 ? "..." : "");
 388         }
 389 }
 390
 391 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
 392 {
 393         int err = 0;
 394         char *flag;
 395         ENTRY;
 396
 397         OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
 398
 399         if (!obd->obd_set_up) {
 400                 CERROR("Device %d not setup\n", obd->obd_minor);
 401                 RETURN(-ENODEV);
 402         }
 403
 404         spin_lock(&obd->obd_dev_lock);
 405         if (obd->obd_stopping) {
 406                 spin_unlock(&obd->obd_dev_lock);
 407                 CERROR("OBD %d already stopping\n", obd->obd_minor);
 408                 RETURN(-ENODEV);
 409         }
 410         /* Leave this on forever */
 411         obd->obd_stopping = 1;
 412         spin_unlock(&obd->obd_dev_lock);
 413
 414         if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
 415                 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
 416                         switch (*flag) {
 417                         case 'F':
 418                                 obd->obd_force = 1;
 419                                 break;
 420                         case 'A':
 421                                 LCONSOLE_WARN("Failing over %s\n",
 422                                               obd->obd_name);
 423                                 obd->obd_fail = 1;
 424                                 obd->obd_no_transno = 1;
 425                                 obd->obd_no_recov = 1;
 426                                 /* Set the obd readonly if we can */
 427                                 if (OBP(obd, iocontrol))
 428                                         obd_iocontrol(OBD_IOC_SET_READONLY,
 429                                                       obd->obd_self_export,
 430                                                       0, NULL, NULL);
 431                                 break;
 432                         default:
 433                                 CERROR("unrecognised flag '%c'\n",
 434                                        *flag);
 435                         }
 436         }
 437
 438         /* The three references that should be remaining are the
 439          * obd_self_export and the attach and setup references. */
 440         if (atomic_read(&obd->obd_refcount) > 3) {
 441 #if 0           /* We should never fail to cleanup with mountconf */
 442                 if (!(obd->obd_fail || obd->obd_force)) {
 443                         CERROR("OBD %s is still busy with %d references\n"
 444                                "You should stop active file system users,"
 445                                " or use the --force option to cleanup.\n",
 446                                obd->obd_name, atomic_read(&obd->obd_refcount));
 447                         dump_exports(obd);
 448                         /* Allow a failed cleanup to try again. */
 449                         obd->obd_stopping = 0;
 450                 }
 451 #endif
 452                 /* refcounf - 3 might be the number of real exports
 453                    (excluding self export). But class_incref is called
 454                    by other things as well, so don't count on it. */
 455                 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
 456                        obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
 457                 dump_exports(obd);
 458                 class_disconnect_exports(obd);
 459         }
 460         LASSERT(obd->obd_self_export);
 461
 462         /* destroy an uuid-export hash body */
 463         lustre_hash_exit(&obd->obd_uuid_hash_body);
 464
 465         /* destroy a nid-export hash body */
 466         lustre_hash_exit(&obd->obd_nid_hash_body);
 467
 468         /* destroy a nid-stats hash body */
 469         lustre_hash_exit(&obd->obd_nid_stats_hash_body);
 470
 471         /* Precleanup, we must make sure all exports get destroyed. */
 472         err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
 473         if (err)
 474                 CERROR("Precleanup %s returned %d\n",
 475                        obd->obd_name, err);
 476
 477         class_decref(obd);
 478         obd->obd_set_up = 0;
 479         RETURN(0);
 480 }
 481
 482 struct obd_device *class_incref(struct obd_device *obd)
 483 {
 484         atomic_inc(&obd->obd_refcount);
 485         CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
 486                atomic_read(&obd->obd_refcount));
 487
 488         return obd;
 489 }
 490
 491 void class_decref(struct obd_device *obd)
 492 {
 493         int err;
 494         int refs;
 495
 496         spin_lock(&obd->obd_dev_lock);
 497         atomic_dec(&obd->obd_refcount);
 498         refs = atomic_read(&obd->obd_refcount);
 499         spin_unlock(&obd->obd_dev_lock);
 500
 501         CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
 502
 503         if ((refs == 1) && obd->obd_stopping) {
 504                 /* All exports have been destroyed; there should
 505                    be no more in-progress ops by this point.*/
 506
 507                 spin_lock(&obd->obd_self_export->exp_lock);
 508                 obd->obd_self_export->exp_flags |=
 509                         (obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 510                         (obd->obd_force ? OBD_OPT_FORCE : 0);
 511                 spin_unlock(&obd->obd_self_export->exp_lock);
 512
 513                 /* note that we'll recurse into class_decref again */
 514                 class_unlink_export(obd->obd_self_export);
 515                 return;
 516         }
 517
 518         if (refs == 0) {
 519                 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
 520                        obd->obd_name, obd->obd_uuid.uuid);
 521                 LASSERT(!obd->obd_attached);
 522                 if (obd->obd_stopping) {
 523                         /* If we're not stopping, we were never set up */
 524                         err = obd_cleanup(obd);
 525                         if (err)
 526                                 CERROR("Cleanup %s returned %d\n",
 527                                        obd->obd_name, err);
 528                 }
 529                 if (OBP(obd, detach)) {
 530                         err = OBP(obd,detach)(obd);
 531                         if (err)
 532                                 CERROR("Detach returned %d\n", err);
 533                 }
 534                 class_release_dev(obd);
 535         }
 536 }
 537
 538 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 539 {
 540         struct obd_import *imp;
 541         struct obd_uuid uuid;
 542         int rc;
 543         ENTRY;
 544
 545         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 546             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 547                 CERROR("invalid conn_uuid\n");
 548                 RETURN(-EINVAL);
 549         }
 550         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 551             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
 552             strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
 553                 CERROR("can't add connection on non-client dev\n");
 554                 RETURN(-EINVAL);
 555         }
 556
 557         imp = obd->u.cli.cl_import;
 558         if (!imp) {
 559                 CERROR("try to add conn on immature client dev\n");
 560                 RETURN(-EINVAL);
 561         }
 562
 563         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 564         rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
 565
 566         RETURN(rc);
 567 }
 568
 569 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 570 {
 571         struct obd_import *imp;
 572         struct obd_uuid uuid;
 573         int rc;
 574         ENTRY;
 575
 576         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 577             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 578                 CERROR("invalid conn_uuid\n");
 579                 RETURN(-EINVAL);
 580         }
 581         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 582             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 583                 CERROR("can't del connection on non-client dev\n");
 584                 RETURN(-EINVAL);
 585         }
 586
 587         imp = obd->u.cli.cl_import;
 588         if (!imp) {
 589                 CERROR("try to del conn on immature client dev\n");
 590                 RETURN(-EINVAL);
 591         }
 592
 593         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 594         rc = obd_del_conn(imp, &uuid);
 595
 596         RETURN(rc);
 597 }
 598
 599 CFS_LIST_HEAD(lustre_profile_list);
 600
 601 struct lustre_profile *class_get_profile(const char * prof)
 602 {
 603         struct lustre_profile *lprof;
 604
 605         ENTRY;
 606         list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
 607                 if (!strcmp(lprof->lp_profile, prof)) {
 608                         RETURN(lprof);
 609                 }
 610         }
 611         RETURN(NULL);
 612 }
 613
 614 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
 615                       int mdclen, char *mdc)
 616 {
 617         struct lustre_profile *lprof;
 618         int err = 0;
 619         ENTRY;
 620
 621         CDEBUG(D_CONFIG, "Add profile %s\n", prof);
 622
 623         OBD_ALLOC(lprof, sizeof(*lprof));
 624         if (lprof == NULL)
 625                 RETURN(-ENOMEM);
 626         CFS_INIT_LIST_HEAD(&lprof->lp_list);
 627
 628         LASSERT(proflen == (strlen(prof) + 1));
 629         OBD_ALLOC(lprof->lp_profile, proflen);
 630         if (lprof->lp_profile == NULL)
 631                 GOTO(out, err = -ENOMEM);
 632         memcpy(lprof->lp_profile, prof, proflen);
 633
 634         LASSERT(osclen == (strlen(osc) + 1));
 635         OBD_ALLOC(lprof->lp_dt, osclen);
 636         if (lprof->lp_dt == NULL)
 637                 GOTO(out, err = -ENOMEM);
 638         memcpy(lprof->lp_dt, osc, osclen);
 639
 640         if (mdclen > 0) {
 641                 LASSERT(mdclen == (strlen(mdc) + 1));
 642                 OBD_ALLOC(lprof->lp_md, mdclen);
 643                 if (lprof->lp_md == NULL)
 644                         GOTO(out, err = -ENOMEM);
 645                 memcpy(lprof->lp_md, mdc, mdclen);
 646         }
 647
 648         list_add(&lprof->lp_list, &lustre_profile_list);
 649         RETURN(err);
 650
 651 out:
 652         if (lprof->lp_md)
 653                 OBD_FREE(lprof->lp_md, mdclen);
 654         if (lprof->lp_dt)
 655                 OBD_FREE(lprof->lp_dt, osclen);
 656         if (lprof->lp_profile)
 657                 OBD_FREE(lprof->lp_profile, proflen);
 658         OBD_FREE(lprof, sizeof(*lprof));
 659         RETURN(err);
 660 }
 661
 662 void class_del_profile(const char *prof)
 663 {
 664         struct lustre_profile *lprof;
 665         ENTRY;
 666
 667         CDEBUG(D_CONFIG, "Del profile %s\n", prof);
 668
 669         lprof = class_get_profile(prof);
 670         if (lprof) {
 671                 list_del(&lprof->lp_list);
 672                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 673                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 674                 if (lprof->lp_md)
 675                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 676                 OBD_FREE(lprof, sizeof *lprof);
 677         }
 678         EXIT;
 679 }
 680
 681 /* COMPAT_146 */
 682 void class_del_profiles(void)
 683 {
 684         struct lustre_profile *lprof, *n;
 685         ENTRY;
 686
 687         list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
 688                 list_del(&lprof->lp_list);
 689                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 690                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 691                 if (lprof->lp_md)
 692                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 693                 OBD_FREE(lprof, sizeof *lprof);
 694         }
 695         EXIT;
 696 }
 697
 698 /* We can't call ll_process_config directly because it lives in a module that
 699    must be loaded after this one. */
 700 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
 701
 702 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
 703 {
 704         client_process_config = cpc;
 705 }
 706 EXPORT_SYMBOL(lustre_register_client_process_config);
 707
 708 int class_process_config(struct lustre_cfg *lcfg)
 709 {
 710         struct obd_device *obd;
 711         int err;
 712
 713         LASSERT(lcfg && !IS_ERR(lcfg));
 714         CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
 715
 716         /* Commands that don't need a device */
 717         switch(lcfg->lcfg_command) {
 718         case LCFG_ATTACH: {
 719                 err = class_attach(lcfg);
 720                 GOTO(out, err);
 721         }
 722         case LCFG_ADD_UUID: {
 723                 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
 724                        " (%s)\n", lustre_cfg_string(lcfg, 1),
 725                        lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
 726
 727                 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
 728                 GOTO(out, err);
 729         }
 730         case LCFG_DEL_UUID: {
 731                 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
 732                        (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
 733                        ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
 734
 735                 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
 736                 GOTO(out, err);
 737         }
 738         case LCFG_MOUNTOPT: {
 739                 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
 740                        lustre_cfg_string(lcfg, 1),
 741                        lustre_cfg_string(lcfg, 2),
 742                        lustre_cfg_string(lcfg, 3));
 743                 /* set these mount options somewhere, so ll_fill_super
 744                  * can find them. */
 745                 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
 746                                         lustre_cfg_string(lcfg, 1),
 747                                         LUSTRE_CFG_BUFLEN(lcfg, 2),
 748                                         lustre_cfg_string(lcfg, 2),
 749                                         LUSTRE_CFG_BUFLEN(lcfg, 3),
 750                                         lustre_cfg_string(lcfg, 3));
 751                 GOTO(out, err);
 752         }
 753         case LCFG_DEL_MOUNTOPT: {
 754                 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
 755                        lustre_cfg_string(lcfg, 1));
 756                 class_del_profile(lustre_cfg_string(lcfg, 1));
 757                 GOTO(out, err = 0);
 758         }
 759         case LCFG_SET_TIMEOUT: {
 760                 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
 761                        obd_timeout, lcfg->lcfg_num);
 762                 obd_timeout = max(lcfg->lcfg_num, 1U);
 763                 GOTO(out, err = 0);
 764         }
 765         case LCFG_SET_UPCALL: {
 766                 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
 767                 /* COMPAT_146 Don't fail on old configs */
 768                 GOTO(out, err = 0);
 769         }
 770         case LCFG_MARKER: {
 771                 struct cfg_marker *marker;
 772                 marker = lustre_cfg_buf(lcfg, 1);
 773                 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
 774                        marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
 775                 GOTO(out, err = 0);
 776         }
 777         case LCFG_PARAM: {
 778                 /* llite has no obd */
 779                 if ((class_match_param(lustre_cfg_string(lcfg, 1),
 780                                        PARAM_LLITE, 0) == 0) &&
 781                     client_process_config) {
 782                         err = (*client_process_config)(lcfg);
 783                         GOTO(out, err);
 784                 }
 785                 /* Fall through */
 786                 break;
 787         }
 788         }
 789
 790         /* Commands that require a device */
 791         obd = class_name2obd(lustre_cfg_string(lcfg, 0));
 792         if (obd == NULL) {
 793                 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
 794                         CERROR("this lcfg command requires a device name\n");
 795                 else
 796                         CERROR("no device for: %s\n",
 797                                lustre_cfg_string(lcfg, 0));
 798
 799                 GOTO(out, err = -EINVAL);
 800         }
 801
 802         switch(lcfg->lcfg_command) {
 803         case LCFG_SETUP: {
 804                 err = class_setup(obd, lcfg);
 805                 GOTO(out, err);
 806         }
 807         case LCFG_DETACH: {
 808                 err = class_detach(obd, lcfg);
 809                 GOTO(out, err = 0);
 810         }
 811         case LCFG_CLEANUP: {
 812                 err = class_cleanup(obd, lcfg);
 813                 GOTO(out, err = 0);
 814         }
 815         case LCFG_ADD_CONN: {
 816                 err = class_add_conn(obd, lcfg);
 817                 GOTO(out, err = 0);
 818         }
 819         case LCFG_DEL_CONN: {
 820                 err = class_del_conn(obd, lcfg);
 821                 GOTO(out, err = 0);
 822         }
 823         default: {
 824                 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
 825                 GOTO(out, err);
 826
 827         }
 828         }
 829 out:
 830         if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
 831                 CWARN("Ignoring error %d on optional command %#x\n", err,
 832                       lcfg->lcfg_command);
 833                 err = 0;
 834         }
 835         return err;
 836 }
 837
 838 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 839                              struct lustre_cfg *lcfg, void *data)
 840 {
 841 #ifdef __KERNEL__
 842         struct lprocfs_vars *var;
 843         char *key, *sval;
 844         int i, keylen, vallen;
 845         int matched = 0, j = 0;
 846         int rc = 0;
 847         ENTRY;
 848
 849         if (lcfg->lcfg_command != LCFG_PARAM) {
 850                 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
 851                 RETURN(-EINVAL);
 852         }
 853
 854         /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
 855            or   lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
 856            or   lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
 857         for (i = 1; i < lcfg->lcfg_bufcount; i++) {
 858                 key = lustre_cfg_buf(lcfg, i);
 859                 /* Strip off prefix */
 860                 class_match_param(key, prefix, &key);
 861                 sval = strchr(key, '=');
 862                 if (!sval || (*(sval + 1) == 0)) {
 863                         CERROR("Can't parse param %s\n", key);
 864                         /* rc = -EINVAL; continue parsing other params */
 865                         continue;
 866                 }
 867                 keylen = sval - key;
 868                 sval++;
 869                 vallen = strlen(sval);
 870                 matched = 0;
 871                 j = 0;
 872                 /* Search proc entries */
 873                 while (lvars[j].name) {
 874                         var = &lvars[j];
 875                         if (class_match_param(key, (char *)var->name, 0) == 0 &&
 876                             keylen == strlen(var->name)) {
 877                                 matched++;
 878                                 rc = -EROFS;
 879                                 if (var->write_fptr) {
 880                                         mm_segment_t oldfs;
 881                                         oldfs = get_fs();
 882                                         set_fs(KERNEL_DS);
 883                                         rc = (var->write_fptr)(NULL, sval,
 884                                                                vallen, data);
 885                                         set_fs(oldfs);
 886                                 }
 887                                 if (rc < 0)
 888                                         CERROR("writing proc entry %s err %d\n",
 889                                                var->name, rc);
 890                                 break;
 891                         }
 892                         j++;
 893                 }
 894                 if (!matched) {
 895                         CERROR("%s: unknown param %s\n",
 896                                (char *)lustre_cfg_string(lcfg, 0), key);
 897                         /* rc = -EINVAL;        continue parsing other params */
 898                 } else {
 899                         LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
 900                                       (char *)lustre_cfg_string(lcfg, 0),
 901                                       (int)strlen(prefix) - 1, prefix,
 902                                       (int)(sval - key - 1), key, sval);
 903                 }
 904         }
 905
 906         if (rc > 0)
 907                 rc = 0;
 908         RETURN(rc);
 909 #else
 910         CDEBUG(D_CONFIG, "liblustre can't process params.\n");
 911         /* Don't throw config error */
 912         RETURN(0);
 913 #endif
 914 }
 915
 916 int class_config_dump_handler(struct llog_handle * handle,
 917                               struct llog_rec_hdr *rec, void *data);
 918
 919 #ifdef __KERNEL__
 920 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
 921 #else
 922 #define lustre_check_exclusion(a,b)  0
 923 #endif
 924
 925 static int class_config_llog_handler(struct llog_handle * handle,
 926                                      struct llog_rec_hdr *rec, void *data)
 927 {
 928         struct config_llog_instance *clli = data;
 929         int cfg_len = rec->lrh_len;
 930         char *cfg_buf = (char*) (rec + 1);
 931         int rc = 0;
 932         ENTRY;
 933
 934         //class_config_dump_handler(handle, rec, data);
 935
 936         switch (rec->lrh_type) {
 937         case OBD_CFG_REC: {
 938                 struct lustre_cfg *lcfg, *lcfg_new;
 939                 struct lustre_cfg_bufs bufs;
 940                 char *inst_name = NULL;
 941                 int inst_len = 0;
 942                 int inst = 0;
 943
 944                 lcfg = (struct lustre_cfg *)cfg_buf;
 945                 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION))
 946                         lustre_swab_lustre_cfg(lcfg);
 947
 948                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
 949                 if (rc)
 950                         GOTO(out, rc);
 951
 952                 /* Figure out config state info */
 953                 if (lcfg->lcfg_command == LCFG_MARKER) {
 954                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
 955                         CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
 956                                clli->cfg_flags, marker->cm_flags);
 957                         if (marker->cm_flags & CM_START) {
 958                                 /* all previous flags off */
 959                                 clli->cfg_flags = CFG_F_MARKER;
 960                                 if (marker->cm_flags & CM_SKIP) {
 961                                         clli->cfg_flags |= CFG_F_SKIP;
 962                                         CDEBUG(D_CONFIG, "SKIP #%d\n",
 963                                                marker->cm_step);
 964                                 } else if ((marker->cm_flags & CM_EXCLUDE) ||
 965                                            lustre_check_exclusion(clli->cfg_sb,
 966                                                           marker->cm_tgtname)) {
 967                                         clli->cfg_flags |= CFG_F_EXCLUDE;
 968                                         CDEBUG(D_CONFIG, "EXCLUDE %d\n",
 969                                                marker->cm_step);
 970                                 }
 971                         } else if (marker->cm_flags & CM_END) {
 972                                 clli->cfg_flags = 0;
 973                         }
 974                 }
 975                 /* A config command without a start marker before it is
 976                    illegal (post 146) */
 977                 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
 978                     !(clli->cfg_flags & CFG_F_MARKER) &&
 979                     (lcfg->lcfg_command != LCFG_MARKER)) {
 980                         CWARN("Config not inside markers, ignoring! "
 981                               "(inst: %s, uuid: %s, flags: %#x)\n",
 982                               clli->cfg_instance ? clli->cfg_instance : "<null>",
 983                               clli->cfg_uuid.uuid, clli->cfg_flags);
 984                         clli->cfg_flags |= CFG_F_SKIP;
 985                 }
 986                 if (clli->cfg_flags & CFG_F_SKIP) {
 987                         CDEBUG(D_CONFIG, "skipping %#x\n",
 988                                clli->cfg_flags);
 989                         rc = 0;
 990                         /* No processing! */
 991                         break;
 992                 }
 993
 994                 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
 995                     (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
 996                         /* Add inactive instead */
 997                         lcfg->lcfg_command = LCFG_LOV_ADD_INA;
 998
 999                 lustre_cfg_bufs_init(&bufs, lcfg);
1000
1001                 if (clli && clli->cfg_instance &&
1002                     LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1003                         inst = 1;
1004                         inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1005                                 strlen(clli->cfg_instance) + 1;
1006                         OBD_ALLOC(inst_name, inst_len);
1007                         if (inst_name == NULL)
1008                                 GOTO(out, rc = -ENOMEM);
1009                         sprintf(inst_name, "%s-%s",
1010                                 lustre_cfg_string(lcfg, 0),
1011                                 clli->cfg_instance);
1012                         lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1013                         CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1014                                lcfg->lcfg_command, inst_name);
1015                 }
1016
1017                 /* we override the llog's uuid for clients, to insure they
1018                 are unique */
1019                 if (clli && clli->cfg_instance &&
1020                     lcfg->lcfg_command == LCFG_ATTACH) {
1021                         lustre_cfg_bufs_set_string(&bufs, 2,
1022                                                    clli->cfg_uuid.uuid);
1023                 }
1024
1025                 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1026
1027                 lcfg_new->lcfg_num   = lcfg->lcfg_num;
1028                 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1029
1030                 /* XXX Hack to try to remain binary compatible with
1031                  * pre-newconfig logs */
1032                 if (lcfg->lcfg_nal != 0 &&      /* pre-newconfig log? */
1033                     (lcfg->lcfg_nid >> 32) == 0) {
1034                         __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1035
1036                         lcfg_new->lcfg_nid =
1037                                 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1038                         CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1039                               lcfg->lcfg_nal, addr,
1040                               libcfs_nid2str(lcfg_new->lcfg_nid));
1041                 } else {
1042                         lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1043                 }
1044
1045                 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1046
1047                 rc = class_process_config(lcfg_new);
1048                 lustre_cfg_free(lcfg_new);
1049
1050                 if (inst)
1051                         OBD_FREE(inst_name, inst_len);
1052                 break;
1053         }
1054         default:
1055                 CERROR("Unknown llog record type %#x encountered\n",
1056                        rec->lrh_type);
1057                 break;
1058         }
1059 out:
1060         if (rc) {
1061                 CERROR("Err %d on cfg command:\n", rc);
1062                 class_config_dump_handler(handle, rec, data);
1063         }
1064         RETURN(rc);
1065 }
1066
1067 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1068                             struct config_llog_instance *cfg)
1069 {
1070         struct llog_process_cat_data cd = {0, 0};
1071         struct llog_handle *llh;
1072         int rc, rc2;
1073         ENTRY;
1074
1075         CDEBUG(D_INFO, "looking up llog %s\n", name);
1076         rc = llog_create(ctxt, &llh, NULL, name);
1077         if (rc)
1078                 RETURN(rc);
1079
1080         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1081         if (rc)
1082                 GOTO(parse_out, rc);
1083
1084         /* continue processing from where we last stopped to end-of-log */
1085         if (cfg)
1086                 cd.first_idx = cfg->cfg_last_idx;
1087         cd.last_idx = 0;
1088
1089         rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1090
1091         CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1092                cd.first_idx + 1, cd.last_idx, rc);
1093
1094         if (cfg)
1095                 cfg->cfg_last_idx = cd.last_idx;
1096
1097 parse_out:
1098         rc2 = llog_close(llh);
1099         if (rc == 0)
1100                 rc = rc2;
1101
1102         RETURN(rc);
1103 }
1104
1105 int class_config_dump_handler(struct llog_handle * handle,
1106                               struct llog_rec_hdr *rec, void *data)
1107 {
1108         int cfg_len = rec->lrh_len;
1109         char *cfg_buf = (char*) (rec + 1);
1110         char *outstr, *ptr, *end;
1111         int rc = 0;
1112         ENTRY;
1113
1114         OBD_ALLOC(outstr, 256);
1115         end = outstr + 256;
1116         ptr = outstr;
1117         if (!outstr) {
1118                 RETURN(-ENOMEM);
1119         }
1120         if (rec->lrh_type == OBD_CFG_REC) {
1121                 struct lustre_cfg *lcfg;
1122                 int i;
1123
1124                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1125                 if (rc)
1126                         GOTO(out, rc);
1127                 lcfg = (struct lustre_cfg *)cfg_buf;
1128
1129                 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1130                                 lcfg->lcfg_command);
1131                 if (lcfg->lcfg_flags) {
1132                         ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1133                                         lcfg->lcfg_flags);
1134                 }
1135                 if (lcfg->lcfg_num) {
1136                         ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1137                                         lcfg->lcfg_num);
1138                 }
1139                 if (lcfg->lcfg_nid) {
1140                         ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n     ",
1141                                         libcfs_nid2str(lcfg->lcfg_nid),
1142                                         lcfg->lcfg_nid);
1143                 }
1144                 if (lcfg->lcfg_command == LCFG_MARKER) {
1145                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1146                         ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1147                                         marker->cm_step, marker->cm_flags,
1148                                         marker->cm_tgtname, marker->cm_comment);
1149                 } else {
1150                         for (i = 0; i <  lcfg->lcfg_bufcount; i++) {
1151                                 ptr += snprintf(ptr, end-ptr, "%d:%s  ", i,
1152                                                 lustre_cfg_string(lcfg, i));
1153                         }
1154                 }
1155                 LCONSOLE(D_WARNING, "   %s\n", outstr);
1156         } else {
1157                 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1158                 rc = -EINVAL;
1159         }
1160 out:
1161         OBD_FREE(outstr, 256);
1162         RETURN(rc);
1163 }
1164
1165 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1166                            struct config_llog_instance *cfg)
1167 {
1168         struct llog_handle *llh;
1169         int rc, rc2;
1170         ENTRY;
1171
1172         LCONSOLE_INFO("Dumping config log %s\n", name);
1173
1174         rc = llog_create(ctxt, &llh, NULL, name);
1175         if (rc)
1176                 RETURN(rc);
1177
1178         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1179         if (rc)
1180                 GOTO(parse_out, rc);
1181
1182         rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1183 parse_out:
1184         rc2 = llog_close(llh);
1185         if (rc == 0)
1186                 rc = rc2;
1187
1188         LCONSOLE_INFO("End config log %s\n", name);
1189         RETURN(rc);
1190
1191 }
1192
1193 /* Cleanup and detach */
1194 int class_manual_cleanup(struct obd_device *obd)
1195 {
1196         struct lustre_cfg *lcfg;
1197         struct lustre_cfg_bufs bufs;
1198         int rc;
1199         char flags[3]="";
1200         ENTRY;
1201
1202         if (!obd) {
1203                 CERROR("empty cleanup\n");
1204                 RETURN(-EALREADY);
1205         }
1206
1207         if (obd->obd_force)
1208                 strcat(flags, "F");
1209         if (obd->obd_fail)
1210                 strcat(flags, "A");
1211
1212         CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1213                obd->obd_name, flags);
1214
1215         lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1216         lustre_cfg_bufs_set_string(&bufs, 1, flags);
1217         lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1218
1219         rc = class_process_config(lcfg);
1220         if (rc) {
1221                 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1222                 GOTO(out, rc);
1223         }
1224
1225         /* the lcfg is almost the same for both ops */
1226         lcfg->lcfg_command = LCFG_DETACH;
1227         rc = class_process_config(lcfg);
1228         if (rc)
1229                 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1230 out:
1231         lustre_cfg_free(lcfg);
1232         RETURN(rc);
1233 }