lustre/obdclass/obd_config.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/obdclass/obd_config.c
  37  *
  38  * Config API
  39  */
  40
  41 #define DEBUG_SUBSYSTEM S_CLASS
  42 #ifdef __KERNEL__
  43 #include <obd_class.h>
  44 #include <linux/string.h>
  45 #else
  46 #include <liblustre.h>
  47 #include <obd_class.h>
  48 #include <obd.h>
  49 #endif
  50 #include <lustre_log.h>
  51 #include <lprocfs_status.h>
  52 #include <libcfs/list.h>
  53 #include <lustre_param.h>
  54 #include <class_hash.h>
  55
  56 extern struct lustre_hash_operations uuid_hash_operations;
  57 extern struct lustre_hash_operations nid_hash_operations;
  58
  59 /*********** string parsing utils *********/
  60
  61 /* returns 0 if we find this key in the buffer, else 1 */
  62 int class_find_param(char *buf, char *key, char **valp)
  63 {
  64         char *ptr;
  65
  66         if (!buf)
  67                 return 1;
  68
  69         if ((ptr = strstr(buf, key)) == NULL)
  70                 return 1;
  71
  72         if (valp)
  73                 *valp = ptr + strlen(key);
  74
  75         return 0;
  76 }
  77
  78 /* returns 0 if this is the first key in the buffer, else 1.
  79    valp points to first char after key. */
  80 int class_match_param(char *buf, char *key, char **valp)
  81 {
  82         if (!buf)
  83                 return 1;
  84
  85         if (memcmp(buf, key, strlen(key)) != 0)
  86                 return 1;
  87
  88         if (valp)
  89                 *valp = buf + strlen(key);
  90
  91         return 0;
  92 }
  93
  94 /* 0 is good nid,
  95    1 not found
  96    < 0 error
  97    endh is set to next separator */
  98 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
  99 {
 100         char tmp, *endp;
 101
 102         if (!buf)
 103                 return 1;
 104         while (*buf == ',' || *buf == ':')
 105                 buf++;
 106         if (*buf == ' ' || *buf == '/' || *buf == '\0')
 107                 return 1;
 108
 109         /* nid separators or end of nids */
 110         endp = strpbrk(buf, ",: /");
 111         if (endp == NULL)
 112                 endp = buf + strlen(buf);
 113
 114         tmp = *endp;
 115         *endp = '\0';
 116         *nid = libcfs_str2nid(buf);
 117         if (*nid == LNET_NID_ANY) {
 118                 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
 119                 *endp = tmp;
 120                 return -EINVAL;
 121         }
 122         *endp = tmp;
 123
 124         if (endh)
 125                 *endh = endp;
 126         CDEBUG(D_INFO, "Nid %s\n", libcfs_nid2str(*nid));
 127         return 0;
 128 }
 129
 130 EXPORT_SYMBOL(class_find_param);
 131 EXPORT_SYMBOL(class_match_param);
 132 EXPORT_SYMBOL(class_parse_nid);
 133
 134 /********************** class fns **********************/
 135
 136 /**
 137  * Create a new device and set the type, name and uuid.  If successful, the new
 138  * device can be accessed by either name or uuid.
 139  */
 140 int class_attach(struct lustre_cfg *lcfg)
 141 {
 142         struct obd_device *obd = NULL;
 143         char *typename, *name, *uuid;
 144         int rc, len;
 145         ENTRY;
 146
 147         if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
 148                 CERROR("No type passed!\n");
 149                 RETURN(-EINVAL);
 150         }
 151         typename = lustre_cfg_string(lcfg, 1);
 152
 153         if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
 154                 CERROR("No name passed!\n");
 155                 RETURN(-EINVAL);
 156         }
 157         name = lustre_cfg_string(lcfg, 0);
 158
 159         if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
 160                 CERROR("No UUID passed!\n");
 161                 RETURN(-EINVAL);
 162         }
 163         uuid = lustre_cfg_string(lcfg, 2);
 164
 165         CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
 166                MKSTR(typename), MKSTR(name), MKSTR(uuid));
 167
 168         obd = class_newdev(typename, name);
 169         if (IS_ERR(obd)) {
 170                 /* Already exists or out of obds */
 171                 rc = PTR_ERR(obd);
 172                 obd = NULL;
 173                 CERROR("Cannot create device %s of type %s : %d\n",
 174                        name, typename, rc);
 175                 GOTO(out, rc);
 176         }
 177         LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
 178                  name, typename);
 179         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
 180                  "obd %p obd_magic %08X != %08X\n",
 181                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 182         LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, "%p obd_name %s != %s\n",
 183                  obd, obd->obd_name, name);
 184
 185         rwlock_init(&obd->obd_pool_lock);
 186         obd->obd_pool_limit = 0;
 187         obd->obd_pool_slv = 0;
 188
 189         CFS_INIT_LIST_HEAD(&obd->obd_exports);
 190         CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
 191         CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
 192         spin_lock_init(&obd->obd_nid_lock);
 193         spin_lock_init(&obd->obd_dev_lock);
 194         sema_init(&obd->obd_dev_sem, 1);
 195         spin_lock_init(&obd->obd_osfs_lock);
 196         /* obd->obd_osfs_age must be set to a value in the distant
 197          * past to guarantee a fresh statfs is fetched on mount. */
 198         obd->obd_osfs_age = cfs_time_shift_64(-1000);
 199
 200         /* XXX belongs in setup not attach  */
 201         /* recovery data */
 202         cfs_init_timer(&obd->obd_recovery_timer);
 203         spin_lock_init(&obd->obd_processing_task_lock);
 204         cfs_waitq_init(&obd->obd_next_transno_waitq);
 205         cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
 206         CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
 207         CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
 208         CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
 209
 210         llog_group_init(&obd->obd_olg, OBD_LLOG_GROUP);
 211
 212         spin_lock_init(&obd->obd_uncommitted_replies_lock);
 213         CFS_INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
 214
 215         len = strlen(uuid);
 216         if (len >= sizeof(obd->obd_uuid)) {
 217                 CERROR("uuid must be < %d bytes long\n",
 218                        (int)sizeof(obd->obd_uuid));
 219                 GOTO(out, rc = -EINVAL);
 220         }
 221         memcpy(obd->obd_uuid.uuid, uuid, len);
 222
 223         /* do the attach */
 224         if (OBP(obd, attach)) {
 225                 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
 226                 if (rc)
 227                         GOTO(out, rc = -EINVAL);
 228         }
 229
 230         /* Detach drops this */
 231         spin_lock(&obd->obd_dev_lock);
 232         atomic_set(&obd->obd_refcount, 1);
 233         spin_unlock(&obd->obd_dev_lock);
 234
 235         obd->obd_attached = 1;
 236         CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
 237                obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
 238         RETURN(0);
 239  out:
 240         if (obd != NULL) {
 241                 class_release_dev(obd);
 242         }
 243         return rc;
 244 }
 245
 246 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 247 {
 248         int err = 0;
 249         struct obd_export *exp;
 250         ENTRY;
 251
 252         LASSERT(obd != NULL);
 253         LASSERTF(obd == class_num2obd(obd->obd_minor),
 254                  "obd %p != obd_devs[%d] %p\n",
 255                  obd, obd->obd_minor, class_num2obd(obd->obd_minor));
 256         LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
 257                  "obd %p obd_magic %08x != %08x\n",
 258                  obd, obd->obd_magic, OBD_DEVICE_MAGIC);
 259
 260         /* have we attached a type to this device? */
 261         if (!obd->obd_attached) {
 262                 CERROR("Device %d not attached\n", obd->obd_minor);
 263                 RETURN(-ENODEV);
 264         }
 265
 266         if (obd->obd_set_up) {
 267                 CERROR("Device %d already setup (type %s)\n",
 268                        obd->obd_minor, obd->obd_type->typ_name);
 269                 RETURN(-EEXIST);
 270         }
 271
 272         /* is someone else setting us up right now? (attach inits spinlock) */
 273         spin_lock(&obd->obd_dev_lock);
 274         if (obd->obd_starting) {
 275                 spin_unlock(&obd->obd_dev_lock);
 276                 CERROR("Device %d setup in progress (type %s)\n",
 277                        obd->obd_minor, obd->obd_type->typ_name);
 278                 RETURN(-EEXIST);
 279         }
 280         /* just leave this on forever.  I can't use obd_set_up here because
 281            other fns check that status, and we're not actually set up yet. */
 282         obd->obd_starting = 1;
 283         spin_unlock(&obd->obd_dev_lock);
 284
 285         /* create an uuid-export hash body */
 286         err = lustre_hash_init(&obd->obd_uuid_hash_body, "UUID_HASH",
 287                                128, &uuid_hash_operations);
 288         if (err)
 289                 GOTO(err_hash, err);
 290
 291         /* create a nid-export hash body */
 292         err = lustre_hash_init(&obd->obd_nid_hash_body, "NID_HASH",
 293                                128, &nid_hash_operations);
 294         if (err)
 295                 GOTO(err_hash, err);
 296
 297         /* create a nid-stats hash body */
 298         err = lustre_hash_init(&obd->obd_nid_stats_hash_body, "NID_STATS",
 299                                128, &nid_stat_hash_operations);
 300         if (err)
 301                 GOTO(err_hash, err);
 302
 303         exp = class_new_export(obd, &obd->obd_uuid);
 304         if (IS_ERR(exp))
 305                 RETURN(PTR_ERR(exp));
 306
 307         obd->obd_self_export = exp;
 308         list_del_init(&exp->exp_obd_chain_timed);
 309         class_export_put(exp);
 310
 311         err = obd_setup(obd, lcfg);
 312         if (err)
 313                 GOTO(err_exp, err);
 314
 315         obd->obd_set_up = 1;
 316
 317         spin_lock(&obd->obd_dev_lock);
 318         /* cleanup drops this */
 319         class_incref(obd);
 320         spin_unlock(&obd->obd_dev_lock);
 321
 322         CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
 323                obd->obd_name, obd->obd_uuid.uuid);
 324
 325         RETURN(0);
 326
 327 err_exp:
 328         class_unlink_export(obd->obd_self_export);
 329         obd->obd_self_export = NULL;
 330 err_hash:
 331         lustre_hash_exit(&obd->obd_uuid_hash_body);
 332         lustre_hash_exit(&obd->obd_nid_hash_body);
 333         lustre_hash_exit(&obd->obd_nid_stats_hash_body);
 334         obd->obd_starting = 0;
 335         CERROR("setup %s failed (%d)\n", obd->obd_name, err);
 336         RETURN(err);
 337 }
 338
 339 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
 340 {
 341         ENTRY;
 342
 343         if (obd->obd_set_up) {
 344                 CERROR("OBD device %d still set up\n", obd->obd_minor);
 345                 RETURN(-EBUSY);
 346         }
 347
 348         spin_lock(&obd->obd_dev_lock);
 349         if (!obd->obd_attached) {
 350                 spin_unlock(&obd->obd_dev_lock);
 351                 CERROR("OBD device %d not attached\n", obd->obd_minor);
 352                 RETURN(-ENODEV);
 353         }
 354         obd->obd_attached = 0;
 355         spin_unlock(&obd->obd_dev_lock);
 356
 357         CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
 358                obd->obd_name, obd->obd_uuid.uuid);
 359
 360         class_decref(obd);
 361
 362         /* not strictly necessary, but cleans up eagerly */
 363         obd_zombie_impexp_cull();
 364
 365         RETURN(0);
 366 }
 367
 368 static void dump_exports(struct obd_device *obd)
 369 {
 370         struct obd_export *exp, *n;
 371
 372         list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
 373                 struct ptlrpc_reply_state *rs;
 374                 struct ptlrpc_reply_state *first_reply = NULL;
 375                 int                        nreplies = 0;
 376
 377                 list_for_each_entry (rs, &exp->exp_outstanding_replies,
 378                                      rs_exp_list) {
 379                         if (nreplies == 0)
 380                                 first_reply = rs;
 381                         nreplies++;
 382                 }
 383
 384                 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
 385                        obd->obd_name, exp, exp->exp_client_uuid.uuid,
 386                        obd_export_nid2str(exp),
 387                        atomic_read(&exp->exp_refcount),
 388                        exp->exp_failed, nreplies, first_reply,
 389                        nreplies > 3 ? "..." : "");
 390         }
 391 }
 392
 393 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
 394 {
 395         int err = 0;
 396         char *flag;
 397         ENTRY;
 398
 399         OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
 400
 401         if (!obd->obd_set_up) {
 402                 CERROR("Device %d not setup\n", obd->obd_minor);
 403                 RETURN(-ENODEV);
 404         }
 405
 406         spin_lock(&obd->obd_dev_lock);
 407         if (obd->obd_stopping) {
 408                 spin_unlock(&obd->obd_dev_lock);
 409                 CERROR("OBD %d already stopping\n", obd->obd_minor);
 410                 RETURN(-ENODEV);
 411         }
 412         /* Leave this on forever */
 413         obd->obd_stopping = 1;
 414         spin_unlock(&obd->obd_dev_lock);
 415
 416         if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
 417                 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
 418                         switch (*flag) {
 419                         case 'F':
 420                                 obd->obd_force = 1;
 421                                 break;
 422                         case 'A':
 423                                 LCONSOLE_WARN("Failing over %s\n",
 424                                               obd->obd_name);
 425                                 obd->obd_fail = 1;
 426                                 obd->obd_no_transno = 1;
 427                                 obd->obd_no_recov = 1;
 428                                 /* Set the obd readonly if we can */
 429                                 if (OBP(obd, iocontrol))
 430                                         obd_iocontrol(OBD_IOC_SET_READONLY,
 431                                                       obd->obd_self_export,
 432                                                       0, NULL, NULL);
 433                                 break;
 434                         default:
 435                                 CERROR("unrecognised flag '%c'\n",
 436                                        *flag);
 437                         }
 438         }
 439
 440         /* The three references that should be remaining are the
 441          * obd_self_export and the attach and setup references. */
 442         if (atomic_read(&obd->obd_refcount) > 3) {
 443 #if 0           /* We should never fail to cleanup with mountconf */
 444                 if (!(obd->obd_fail || obd->obd_force)) {
 445                         CERROR("OBD %s is still busy with %d references\n"
 446                                "You should stop active file system users,"
 447                                " or use the --force option to cleanup.\n",
 448                                obd->obd_name, atomic_read(&obd->obd_refcount));
 449                         dump_exports(obd);
 450                         /* Allow a failed cleanup to try again. */
 451                         obd->obd_stopping = 0;
 452                 }
 453 #endif
 454                 /* refcounf - 3 might be the number of real exports
 455                    (excluding self export). But class_incref is called
 456                    by other things as well, so don't count on it. */
 457                 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
 458                        obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
 459                 dump_exports(obd);
 460                 class_disconnect_exports(obd);
 461         }
 462         LASSERT(obd->obd_self_export);
 463
 464         /* destroy an uuid-export hash body */
 465         lustre_hash_exit(&obd->obd_uuid_hash_body);
 466
 467         /* destroy a nid-export hash body */
 468         lustre_hash_exit(&obd->obd_nid_hash_body);
 469
 470         /* destroy a nid-stats hash body */
 471         lustre_hash_exit(&obd->obd_nid_stats_hash_body);
 472
 473         /* Precleanup, we must make sure all exports get destroyed. */
 474         err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
 475         if (err)
 476                 CERROR("Precleanup %s returned %d\n",
 477                        obd->obd_name, err);
 478         class_decref(obd);
 479         obd->obd_set_up = 0;
 480         RETURN(0);
 481 }
 482
 483 struct obd_device *class_incref(struct obd_device *obd)
 484 {
 485         atomic_inc(&obd->obd_refcount);
 486         CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
 487                atomic_read(&obd->obd_refcount));
 488
 489         return obd;
 490 }
 491
 492 void class_decref(struct obd_device *obd)
 493 {
 494         int err;
 495         int refs;
 496
 497         spin_lock(&obd->obd_dev_lock);
 498         atomic_dec(&obd->obd_refcount);
 499         refs = atomic_read(&obd->obd_refcount);
 500         spin_unlock(&obd->obd_dev_lock);
 501
 502         CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
 503
 504         if ((refs == 1) && obd->obd_stopping) {
 505                 /* All exports have been destroyed; there should
 506                    be no more in-progress ops by this point.*/
 507
 508                 spin_lock(&obd->obd_self_export->exp_lock);
 509                 obd->obd_self_export->exp_flags |=
 510                         (obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
 511                         (obd->obd_force ? OBD_OPT_FORCE : 0);
 512                 spin_unlock(&obd->obd_self_export->exp_lock);
 513
 514                 /* note that we'll recurse into class_decref again */
 515                 class_unlink_export(obd->obd_self_export);
 516                 return;
 517         }
 518
 519         if (refs == 0) {
 520                 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
 521                        obd->obd_name, obd->obd_uuid.uuid);
 522                 LASSERT(!obd->obd_attached);
 523                 if (obd->obd_stopping) {
 524                         /* If we're not stopping, we were never set up */
 525                         err = obd_cleanup(obd);
 526                         if (err)
 527                                 CERROR("Cleanup %s returned %d\n",
 528                                        obd->obd_name, err);
 529                 }
 530                 if (OBP(obd, detach)) {
 531                         err = OBP(obd,detach)(obd);
 532                         if (err)
 533                                 CERROR("Detach returned %d\n", err);
 534                 }
 535                 class_release_dev(obd);
 536         }
 537 }
 538
 539 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 540 {
 541         struct obd_import *imp;
 542         struct obd_uuid uuid;
 543         int rc;
 544         ENTRY;
 545
 546         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 547             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 548                 CERROR("invalid conn_uuid\n");
 549                 RETURN(-EINVAL);
 550         }
 551         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 552             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
 553             strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
 554                 CERROR("can't add connection on non-client dev\n");
 555                 RETURN(-EINVAL);
 556         }
 557
 558         imp = obd->u.cli.cl_import;
 559         if (!imp) {
 560                 CERROR("try to add conn on immature client dev\n");
 561                 RETURN(-EINVAL);
 562         }
 563
 564         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 565         rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
 566
 567         RETURN(rc);
 568 }
 569
 570 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
 571 {
 572         struct obd_import *imp;
 573         struct obd_uuid uuid;
 574         int rc;
 575         ENTRY;
 576
 577         if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
 578             LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
 579                 CERROR("invalid conn_uuid\n");
 580                 RETURN(-EINVAL);
 581         }
 582         if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
 583             strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
 584                 CERROR("can't del connection on non-client dev\n");
 585                 RETURN(-EINVAL);
 586         }
 587
 588         imp = obd->u.cli.cl_import;
 589         if (!imp) {
 590                 CERROR("try to del conn on immature client dev\n");
 591                 RETURN(-EINVAL);
 592         }
 593
 594         obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
 595         rc = obd_del_conn(imp, &uuid);
 596
 597         RETURN(rc);
 598 }
 599
 600 CFS_LIST_HEAD(lustre_profile_list);
 601
 602 struct lustre_profile *class_get_profile(const char * prof)
 603 {
 604         struct lustre_profile *lprof;
 605
 606         ENTRY;
 607         list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
 608                 if (!strcmp(lprof->lp_profile, prof)) {
 609                         RETURN(lprof);
 610                 }
 611         }
 612         RETURN(NULL);
 613 }
 614
 615 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
 616                       int mdclen, char *mdc)
 617 {
 618         struct lustre_profile *lprof;
 619         int err = 0;
 620         ENTRY;
 621
 622         CDEBUG(D_CONFIG, "Add profile %s\n", prof);
 623
 624         OBD_ALLOC(lprof, sizeof(*lprof));
 625         if (lprof == NULL)
 626                 RETURN(-ENOMEM);
 627         CFS_INIT_LIST_HEAD(&lprof->lp_list);
 628
 629         LASSERT(proflen == (strlen(prof) + 1));
 630         OBD_ALLOC(lprof->lp_profile, proflen);
 631         if (lprof->lp_profile == NULL)
 632                 GOTO(out, err = -ENOMEM);
 633         memcpy(lprof->lp_profile, prof, proflen);
 634
 635         LASSERT(osclen == (strlen(osc) + 1));
 636         OBD_ALLOC(lprof->lp_dt, osclen);
 637         if (lprof->lp_dt == NULL)
 638                 GOTO(out, err = -ENOMEM);
 639         memcpy(lprof->lp_dt, osc, osclen);
 640
 641         if (mdclen > 0) {
 642                 LASSERT(mdclen == (strlen(mdc) + 1));
 643                 OBD_ALLOC(lprof->lp_md, mdclen);
 644                 if (lprof->lp_md == NULL)
 645                         GOTO(out, err = -ENOMEM);
 646                 memcpy(lprof->lp_md, mdc, mdclen);
 647         }
 648
 649         list_add(&lprof->lp_list, &lustre_profile_list);
 650         RETURN(err);
 651
 652 out:
 653         if (lprof->lp_md)
 654                 OBD_FREE(lprof->lp_md, mdclen);
 655         if (lprof->lp_dt)
 656                 OBD_FREE(lprof->lp_dt, osclen);
 657         if (lprof->lp_profile)
 658                 OBD_FREE(lprof->lp_profile, proflen);
 659         OBD_FREE(lprof, sizeof(*lprof));
 660         RETURN(err);
 661 }
 662
 663 void class_del_profile(const char *prof)
 664 {
 665         struct lustre_profile *lprof;
 666         ENTRY;
 667
 668         CDEBUG(D_CONFIG, "Del profile %s\n", prof);
 669
 670         lprof = class_get_profile(prof);
 671         if (lprof) {
 672                 list_del(&lprof->lp_list);
 673                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 674                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 675                 if (lprof->lp_md)
 676                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 677                 OBD_FREE(lprof, sizeof *lprof);
 678         }
 679         EXIT;
 680 }
 681
 682 /* COMPAT_146 */
 683 void class_del_profiles(void)
 684 {
 685         struct lustre_profile *lprof, *n;
 686         ENTRY;
 687
 688         list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
 689                 list_del(&lprof->lp_list);
 690                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 691                 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
 692                 if (lprof->lp_md)
 693                         OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
 694                 OBD_FREE(lprof, sizeof *lprof);
 695         }
 696         EXIT;
 697 }
 698
 699 /* We can't call ll_process_config directly because it lives in a module that
 700    must be loaded after this one. */
 701 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
 702
 703 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
 704 {
 705         client_process_config = cpc;
 706 }
 707 EXPORT_SYMBOL(lustre_register_client_process_config);
 708
 709 int class_process_config(struct lustre_cfg *lcfg)
 710 {
 711         struct obd_device *obd;
 712         int err;
 713
 714         LASSERT(lcfg && !IS_ERR(lcfg));
 715         CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
 716
 717         /* Commands that don't need a device */
 718         switch(lcfg->lcfg_command) {
 719         case LCFG_ATTACH: {
 720                 err = class_attach(lcfg);
 721                 GOTO(out, err);
 722         }
 723         case LCFG_ADD_UUID: {
 724                 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
 725                        " (%s)\n", lustre_cfg_string(lcfg, 1),
 726                        lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
 727
 728                 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
 729                 GOTO(out, err);
 730         }
 731         case LCFG_DEL_UUID: {
 732                 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
 733                        (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
 734                        ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
 735
 736                 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
 737                 GOTO(out, err);
 738         }
 739         case LCFG_MOUNTOPT: {
 740                 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
 741                        lustre_cfg_string(lcfg, 1),
 742                        lustre_cfg_string(lcfg, 2),
 743                        lustre_cfg_string(lcfg, 3));
 744                 /* set these mount options somewhere, so ll_fill_super
 745                  * can find them. */
 746                 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
 747                                         lustre_cfg_string(lcfg, 1),
 748                                         LUSTRE_CFG_BUFLEN(lcfg, 2),
 749                                         lustre_cfg_string(lcfg, 2),
 750                                         LUSTRE_CFG_BUFLEN(lcfg, 3),
 751                                         lustre_cfg_string(lcfg, 3));
 752                 GOTO(out, err);
 753         }
 754         case LCFG_DEL_MOUNTOPT: {
 755                 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
 756                        lustre_cfg_string(lcfg, 1));
 757                 class_del_profile(lustre_cfg_string(lcfg, 1));
 758                 GOTO(out, err = 0);
 759         }
 760         case LCFG_SET_TIMEOUT: {
 761                 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
 762                        obd_timeout, lcfg->lcfg_num);
 763                 obd_timeout = max(lcfg->lcfg_num, 1U);
 764                 GOTO(out, err = 0);
 765         }
 766         case LCFG_SET_UPCALL: {
 767                 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
 768                 /* COMPAT_146 Don't fail on old configs */
 769                 GOTO(out, err = 0);
 770         }
 771         case LCFG_MARKER: {
 772                 struct cfg_marker *marker;
 773                 marker = lustre_cfg_buf(lcfg, 1);
 774                 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
 775                        marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
 776                 GOTO(out, err = 0);
 777         }
 778         case LCFG_PARAM: {
 779                 /* llite has no obd */
 780                 if ((class_match_param(lustre_cfg_string(lcfg, 1),
 781                                        PARAM_LLITE, 0) == 0) &&
 782                     client_process_config) {
 783                         err = (*client_process_config)(lcfg);
 784                         GOTO(out, err);
 785                 }
 786                 /* Fall through */
 787                 break;
 788         }
 789         }
 790
 791         /* Commands that require a device */
 792         obd = class_name2obd(lustre_cfg_string(lcfg, 0));
 793         if (obd == NULL) {
 794                 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
 795                         CERROR("this lcfg command requires a device name\n");
 796                 else
 797                         CERROR("no device for: %s\n",
 798                                lustre_cfg_string(lcfg, 0));
 799
 800                 GOTO(out, err = -EINVAL);
 801         }
 802
 803         switch(lcfg->lcfg_command) {
 804         case LCFG_SETUP: {
 805                 err = class_setup(obd, lcfg);
 806                 GOTO(out, err);
 807         }
 808         case LCFG_DETACH: {
 809                 err = class_detach(obd, lcfg);
 810                 GOTO(out, err = 0);
 811         }
 812         case LCFG_CLEANUP: {
 813                 err = class_cleanup(obd, lcfg);
 814                 GOTO(out, err = 0);
 815         }
 816         case LCFG_ADD_CONN: {
 817                 err = class_add_conn(obd, lcfg);
 818                 GOTO(out, err = 0);
 819         }
 820         case LCFG_DEL_CONN: {
 821                 err = class_del_conn(obd, lcfg);
 822                 GOTO(out, err = 0);
 823         }
 824         default: {
 825                 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
 826                 GOTO(out, err);
 827
 828         }
 829         }
 830 out:
 831         if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
 832                 CWARN("Ignoring error %d on optional command %#x\n", err,
 833                       lcfg->lcfg_command);
 834                 err = 0;
 835         }
 836         return err;
 837 }
 838
 839 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
 840                              struct lustre_cfg *lcfg, void *data)
 841 {
 842 #ifdef __KERNEL__
 843         struct lprocfs_vars *var;
 844         char *key, *sval;
 845         int i, keylen, vallen;
 846         int matched = 0, j = 0;
 847         int rc = 0;
 848         ENTRY;
 849
 850         if (lcfg->lcfg_command != LCFG_PARAM) {
 851                 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
 852                 RETURN(-EINVAL);
 853         }
 854
 855         /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
 856            or   lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
 857            or   lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
 858         for (i = 1; i < lcfg->lcfg_bufcount; i++) {
 859                 key = lustre_cfg_buf(lcfg, i);
 860                 /* Strip off prefix */
 861                 class_match_param(key, prefix, &key);
 862                 sval = strchr(key, '=');
 863                 if (!sval || (*(sval + 1) == 0)) {
 864                         CERROR("Can't parse param %s\n", key);
 865                         /* rc = -EINVAL; continue parsing other params */
 866                         continue;
 867                 }
 868                 keylen = sval - key;
 869                 sval++;
 870                 vallen = strlen(sval);
 871                 matched = 0;
 872                 j = 0;
 873                 /* Search proc entries */
 874                 while (lvars[j].name) {
 875                         var = &lvars[j];
 876                         if (class_match_param(key, (char *)var->name, 0) == 0 &&
 877                             keylen == strlen(var->name)) {
 878                                 matched++;
 879                                 rc = -EROFS;
 880                                 if (var->write_fptr) {
 881                                         mm_segment_t oldfs;
 882                                         oldfs = get_fs();
 883                                         set_fs(KERNEL_DS);
 884                                         rc = (var->write_fptr)(NULL, sval,
 885                                                                vallen, data);
 886                                         set_fs(oldfs);
 887                                 }
 888                                 if (rc < 0)
 889                                         CERROR("writing proc entry %s err %d\n",
 890                                                var->name, rc);
 891                                 break;
 892                         }
 893                         j++;
 894                 }
 895                 if (!matched) {
 896                         CERROR("%s: unknown param %s\n",
 897                                (char *)lustre_cfg_string(lcfg, 0), key);
 898                         /* rc = -EINVAL;        continue parsing other params */
 899                 } else {
 900                         LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
 901                                       lustre_cfg_string(lcfg, 0),
 902                                       (int)strlen(prefix) - 1, prefix,
 903                                       (int)(sval - key - 1), key, sval);
 904                 }
 905         }
 906
 907         if (rc > 0)
 908                 rc = 0;
 909         RETURN(rc);
 910 #else
 911         CDEBUG(D_CONFIG, "liblustre can't process params.\n");
 912         /* Don't throw config error */
 913         RETURN(0);
 914 #endif
 915 }
 916
 917 int class_config_dump_handler(struct llog_handle * handle,
 918                               struct llog_rec_hdr *rec, void *data);
 919
 920 #ifdef __KERNEL__
 921 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
 922 #else
 923 #define lustre_check_exclusion(a,b)  0
 924 #endif
 925
 926 static int class_config_llog_handler(struct llog_handle * handle,
 927                                      struct llog_rec_hdr *rec, void *data)
 928 {
 929         struct config_llog_instance *clli = data;
 930         int cfg_len = rec->lrh_len;
 931         char *cfg_buf = (char*) (rec + 1);
 932         int rc = 0;
 933         ENTRY;
 934
 935         //class_config_dump_handler(handle, rec, data);
 936
 937         switch (rec->lrh_type) {
 938         case OBD_CFG_REC: {
 939                 struct lustre_cfg *lcfg, *lcfg_new;
 940                 struct lustre_cfg_bufs bufs;
 941                 char *inst_name = NULL;
 942                 int inst_len = 0;
 943                 int inst = 0;
 944
 945                 lcfg = (struct lustre_cfg *)cfg_buf;
 946                 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION))
 947                         lustre_swab_lustre_cfg(lcfg);
 948
 949                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
 950                 if (rc)
 951                         GOTO(out, rc);
 952
 953                 /* Figure out config state info */
 954                 if (lcfg->lcfg_command == LCFG_MARKER) {
 955                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
 956                         CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
 957                                clli->cfg_flags, marker->cm_flags);
 958                         if (marker->cm_flags & CM_START) {
 959                                 /* all previous flags off */
 960                                 clli->cfg_flags = CFG_F_MARKER;
 961                                 if (marker->cm_flags & CM_SKIP) {
 962                                         clli->cfg_flags |= CFG_F_SKIP;
 963                                         CDEBUG(D_CONFIG, "SKIP #%d\n",
 964                                                marker->cm_step);
 965                                 } else if ((marker->cm_flags & CM_EXCLUDE) ||
 966                                            lustre_check_exclusion(clli->cfg_sb,
 967                                                           marker->cm_tgtname)) {
 968                                         clli->cfg_flags |= CFG_F_EXCLUDE;
 969                                         CDEBUG(D_CONFIG, "EXCLUDE %d\n",
 970                                                marker->cm_step);
 971                                 }
 972                         } else if (marker->cm_flags & CM_END) {
 973                                 clli->cfg_flags = 0;
 974                         }
 975                 }
 976                 /* A config command without a start marker before it is
 977                    illegal (post 146) */
 978                 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
 979                     !(clli->cfg_flags & CFG_F_MARKER) &&
 980                     (lcfg->lcfg_command != LCFG_MARKER)) {
 981                         CWARN("Config not inside markers, ignoring! "
 982                               "(inst: %s, uuid: %s, flags: %#x)\n",
 983                               clli->cfg_instance ? clli->cfg_instance : "<null>",
 984                               clli->cfg_uuid.uuid, clli->cfg_flags);
 985                         clli->cfg_flags |= CFG_F_SKIP;
 986                 }
 987                 if (clli->cfg_flags & CFG_F_SKIP) {
 988                         CDEBUG(D_CONFIG, "skipping %#x\n",
 989                                clli->cfg_flags);
 990                         rc = 0;
 991                         /* No processing! */
 992                         break;
 993                 }
 994
 995                 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
 996                     (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
 997                         /* Add inactive instead */
 998                         lcfg->lcfg_command = LCFG_LOV_ADD_INA;
 999
1000                 lustre_cfg_bufs_init(&bufs, lcfg);
1001
1002                 if (clli && clli->cfg_instance &&
1003                     LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1004                         inst = 1;
1005                         inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1006                                 strlen(clli->cfg_instance) + 1;
1007                         OBD_ALLOC(inst_name, inst_len);
1008                         if (inst_name == NULL)
1009                                 GOTO(out, rc = -ENOMEM);
1010                         sprintf(inst_name, "%s-%s",
1011                                 lustre_cfg_string(lcfg, 0),
1012                                 clli->cfg_instance);
1013                         lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1014                         CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1015                                lcfg->lcfg_command, inst_name);
1016                 }
1017
1018                 /* we override the llog's uuid for clients, to insure they
1019                 are unique */
1020                 if (clli && clli->cfg_instance &&
1021                     lcfg->lcfg_command == LCFG_ATTACH) {
1022                         lustre_cfg_bufs_set_string(&bufs, 2,
1023                                                    clli->cfg_uuid.uuid);
1024                 }
1025
1026                 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1027
1028                 lcfg_new->lcfg_num   = lcfg->lcfg_num;
1029                 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1030
1031                 /* XXX Hack to try to remain binary compatible with
1032                  * pre-newconfig logs */
1033                 if (lcfg->lcfg_nal != 0 &&      /* pre-newconfig log? */
1034                     (lcfg->lcfg_nid >> 32) == 0) {
1035                         __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1036
1037                         lcfg_new->lcfg_nid =
1038                                 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1039                         CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1040                               lcfg->lcfg_nal, addr,
1041                               libcfs_nid2str(lcfg_new->lcfg_nid));
1042                 } else {
1043                         lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1044                 }
1045
1046                 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1047
1048                 rc = class_process_config(lcfg_new);
1049                 lustre_cfg_free(lcfg_new);
1050
1051                 if (inst)
1052                         OBD_FREE(inst_name, inst_len);
1053                 break;
1054         }
1055         default:
1056                 CERROR("Unknown llog record type %#x encountered\n",
1057                        rec->lrh_type);
1058                 break;
1059         }
1060 out:
1061         if (rc) {
1062                 CERROR("Err %d on cfg command:\n", rc);
1063                 class_config_dump_handler(handle, rec, data);
1064         }
1065         RETURN(rc);
1066 }
1067
1068 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1069                             struct config_llog_instance *cfg)
1070 {
1071         struct llog_process_cat_data cd = {0, 0};
1072         struct llog_handle *llh;
1073         int rc, rc2;
1074         ENTRY;
1075
1076         CDEBUG(D_INFO, "looking up llog %s\n", name);
1077         rc = llog_create(ctxt, &llh, NULL, name);
1078         if (rc)
1079                 RETURN(rc);
1080
1081         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1082         if (rc)
1083                 GOTO(parse_out, rc);
1084
1085         /* continue processing from where we last stopped to end-of-log */
1086         if (cfg)
1087                 cd.lpcd_first_idx = cfg->cfg_last_idx;
1088         cd.lpcd_last_idx = 0;
1089
1090         rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1091
1092         CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1093                cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1094
1095         if (cfg)
1096                 cfg->cfg_last_idx = cd.lpcd_last_idx;
1097
1098 parse_out:
1099         rc2 = llog_close(llh);
1100         if (rc == 0)
1101                 rc = rc2;
1102
1103         RETURN(rc);
1104 }
1105
1106 int class_config_dump_handler(struct llog_handle * handle,
1107                               struct llog_rec_hdr *rec, void *data)
1108 {
1109         int cfg_len = rec->lrh_len;
1110         char *cfg_buf = (char*) (rec + 1);
1111         char *outstr, *ptr, *end;
1112         int rc = 0;
1113         ENTRY;
1114
1115         OBD_ALLOC(outstr, 256);
1116         end = outstr + 256;
1117         ptr = outstr;
1118         if (!outstr) {
1119                 RETURN(-ENOMEM);
1120         }
1121         if (rec->lrh_type == OBD_CFG_REC) {
1122                 struct lustre_cfg *lcfg;
1123                 int i;
1124
1125                 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1126                 if (rc)
1127                         GOTO(out, rc);
1128                 lcfg = (struct lustre_cfg *)cfg_buf;
1129
1130                 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1131                                 lcfg->lcfg_command);
1132                 if (lcfg->lcfg_flags) {
1133                         ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1134                                         lcfg->lcfg_flags);
1135                 }
1136                 if (lcfg->lcfg_num) {
1137                         ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1138                                         lcfg->lcfg_num);
1139                 }
1140                 if (lcfg->lcfg_nid) {
1141                         ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n     ",
1142                                         libcfs_nid2str(lcfg->lcfg_nid),
1143                                         lcfg->lcfg_nid);
1144                 }
1145                 if (lcfg->lcfg_command == LCFG_MARKER) {
1146                         struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1147                         ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1148                                         marker->cm_step, marker->cm_flags,
1149                                         marker->cm_tgtname, marker->cm_comment);
1150                 } else {
1151                         for (i = 0; i <  lcfg->lcfg_bufcount; i++) {
1152                                 ptr += snprintf(ptr, end-ptr, "%d:%s  ", i,
1153                                                 lustre_cfg_string(lcfg, i));
1154                         }
1155                 }
1156                 LCONSOLE(D_WARNING, "   %s\n", outstr);
1157         } else {
1158                 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1159                 rc = -EINVAL;
1160         }
1161 out:
1162         OBD_FREE(outstr, 256);
1163         RETURN(rc);
1164 }
1165
1166 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1167                            struct config_llog_instance *cfg)
1168 {
1169         struct llog_handle *llh;
1170         int rc, rc2;
1171         ENTRY;
1172
1173         LCONSOLE_INFO("Dumping config log %s\n", name);
1174
1175         rc = llog_create(ctxt, &llh, NULL, name);
1176         if (rc)
1177                 RETURN(rc);
1178
1179         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1180         if (rc)
1181                 GOTO(parse_out, rc);
1182
1183         rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1184 parse_out:
1185         rc2 = llog_close(llh);
1186         if (rc == 0)
1187                 rc = rc2;
1188
1189         LCONSOLE_INFO("End config log %s\n", name);
1190         RETURN(rc);
1191
1192 }
1193
1194 /* Cleanup and detach */
1195 int class_manual_cleanup(struct obd_device *obd)
1196 {
1197         struct lustre_cfg *lcfg;
1198         struct lustre_cfg_bufs bufs;
1199         int rc;
1200         char flags[3]="";
1201         ENTRY;
1202
1203         if (!obd) {
1204                 CERROR("empty cleanup\n");
1205                 RETURN(-EALREADY);
1206         }
1207
1208         if (obd->obd_force)
1209                 strcat(flags, "F");
1210         if (obd->obd_fail)
1211                 strcat(flags, "A");
1212
1213         CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1214                obd->obd_name, flags);
1215
1216         lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1217         lustre_cfg_bufs_set_string(&bufs, 1, flags);
1218         lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1219
1220         rc = class_process_config(lcfg);
1221         if (rc) {
1222                 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1223                 GOTO(out, rc);
1224         }
1225
1226         /* the lcfg is almost the same for both ops */
1227         lcfg->lcfg_command = LCFG_DETACH;
1228         rc = class_process_config(lcfg);
1229         if (rc)
1230                 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1231 out:
1232         lustre_cfg_free(lcfg);
1233         RETURN(rc);
1234 }