lustre/obdclass/obd_config.c

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