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) 2001-2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  * Config API
  22  *
  23  */
  24
  25 #define DEBUG_SUBSYSTEM S_CLASS
  26 #ifdef __KERNEL__
  27 #include <linux/kmod.h>   /* for request_module() */
  28 #include <linux/module.h>
  29 #include <linux/obd_class.h>
  30 #include <linux/random.h>
  31 #include <linux/slab.h>
  32 #include <linux/pagemap.h>
  33 #else
  34 #include <liblustre.h>
  35 #include <linux/obd_class.h>
  36 #include <linux/obd.h>
  37 #endif
  38 #include <linux/lustre_log.h>
  39 #include <linux/lprocfs_status.h>
  40 #include <portals/list.h>
  41
  42
  43 /* Create a new device and set the type, name and uuid.  If
  44  * successful, the new device can be accessed by either name or uuid.
  45  */
  46 int class_attach(struct lustre_cfg *lcfg)
  47 {
  48         struct obd_type *type;
  49         struct obd_device *obd;
  50         char *typename, *name, *uuid;
  51         int minor, rc, len, dev, stage = 0;
  52
  53         if (!lcfg->lcfg_inllen1 || !lcfg->lcfg_inlbuf1) {
  54                 CERROR("No type passed!\n");
  55                 RETURN(-EINVAL);
  56         }
  57         if (lcfg->lcfg_inlbuf1[lcfg->lcfg_inllen1 - 1] != 0) {
  58                 CERROR("Type not nul terminated!\n");
  59                 RETURN(-EINVAL);
  60         }
  61         typename = lcfg->lcfg_inlbuf1;
  62
  63         if (!lcfg->lcfg_dev_namelen || !lcfg->lcfg_dev_name) {
  64                 CERROR("No name passed!\n");
  65                 RETURN(-EINVAL);
  66         }
  67         if (lcfg->lcfg_dev_name[lcfg->lcfg_dev_namelen - 1] != 0) {
  68                 CERROR("Name not nul terminated!\n");
  69                 RETURN(-EINVAL);
  70         }
  71         name = lcfg->lcfg_dev_name;
  72
  73         if (!lcfg->lcfg_inllen2 || !lcfg->lcfg_inlbuf2) {
  74                 CERROR("No UUID passed!\n");
  75                 RETURN(-EINVAL);
  76         }
  77         if (lcfg->lcfg_inlbuf2[lcfg->lcfg_inllen2 - 1] != 0) {
  78                 CERROR("UUID not nul terminated!\n");
  79                 RETURN(-EINVAL);
  80         }
  81         uuid = lcfg->lcfg_inlbuf2;
  82
  83         CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
  84                MKSTR(lcfg->lcfg_inlbuf1),
  85                MKSTR(lcfg->lcfg_dev_name), MKSTR(lcfg->lcfg_inlbuf2));
  86
  87         /* find the type */
  88         type = class_get_type(typename);
  89         if (!type) {
  90                 CERROR("OBD: unknown type: %s\n", typename);
  91                 RETURN(-EINVAL);
  92         }
  93         stage = 1;
  94
  95         obd = class_name2obd(name);
  96         if (obd != NULL) {
  97                 CERROR("obd %s already attached\n", name);
  98                 GOTO(out, rc = -EEXIST);
  99         }
 100
 101         obd = class_newdev(&dev);
 102         if (obd == NULL)
 103                 GOTO(out, rc = -EINVAL);
 104
 105         /* have we attached a type to this device */
 106         if (obd->obd_attached || obd->obd_type) {
 107                 CERROR("OBD: Device %d already typed as %s.\n",
 108                        obd->obd_minor, MKSTR(obd->obd_type->typ_name));
 109                 GOTO(out, rc = -EBUSY);
 110         }
 111
 112         LASSERT(obd == (obd_dev + obd->obd_minor));
 113
 114         minor = obd->obd_minor;
 115         memset(obd, 0, sizeof(*obd));
 116         obd->obd_minor = minor;
 117         obd->obd_type = type;
 118         INIT_LIST_HEAD(&obd->obd_exports);
 119         obd->obd_num_exports = 0;
 120         spin_lock_init(&obd->obd_dev_lock);
 121         spin_lock_init(&obd->obd_osfs_lock);
 122         obd->obd_osfs_age = jiffies - 1000 * HZ;
 123         init_waitqueue_head(&obd->obd_refcount_waitq);
 124
 125         /* XXX belongs in setup not attach  */
 126         /* recovery data */
 127         init_timer(&obd->obd_recovery_timer);
 128         spin_lock_init(&obd->obd_processing_task_lock);
 129         init_waitqueue_head(&obd->obd_next_transno_waitq);
 130         INIT_LIST_HEAD(&obd->obd_recovery_queue);
 131         INIT_LIST_HEAD(&obd->obd_delayed_reply_queue);
 132
 133         spin_lock_init(&obd->obd_uncommitted_replies_lock);
 134         INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
 135
 136         len = strlen(name) + 1;
 137         OBD_ALLOC(obd->obd_name, len);
 138         if (!obd->obd_name)
 139                 GOTO(out, rc = -ENOMEM);
 140         memcpy(obd->obd_name, name, len);
 141         stage = 2;
 142
 143         len = strlen(uuid);
 144         if (len >= sizeof(obd->obd_uuid)) {
 145                 CERROR("uuid must be < "LPSZ" bytes long\n",
 146                        sizeof(obd->obd_uuid));
 147                 GOTO(out, rc = -EINVAL);
 148         }
 149         memcpy(obd->obd_uuid.uuid, uuid, len);
 150
 151         /* do the attach */
 152         if (OBP(obd, attach)) {
 153                 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
 154                 if (rc)
 155                         GOTO(out, rc = -EINVAL);
 156         }
 157
 158         obd->obd_attached = 1;
 159         type->typ_refcnt++;
 160         CDEBUG(D_IOCTL, "OBD: dev %d attached type %s\n",
 161                obd->obd_minor, typename);
 162         RETURN(0);
 163  out:
 164         switch (stage) {
 165         case 2:
 166                 OBD_FREE(obd->obd_name, strlen(obd->obd_name) + 1);
 167         case 1:
 168                 class_put_type(obd->obd_type);
 169                 obd->obd_type = NULL;
 170         }
 171         return rc;
 172 }
 173
 174 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
 175 {
 176         int err = 0;
 177         struct obd_export *exp;
 178         ENTRY;
 179
 180         LASSERT(obd == (obd_dev + obd->obd_minor));
 181
 182         /* have we attached a type to this device? */
 183         if (!obd->obd_attached) {
 184                 CERROR("Device %d not attached\n", obd->obd_minor);
 185                 RETURN(-ENODEV);
 186         }
 187
 188         /* has this been done already? */
 189         if (obd->obd_set_up) {
 190                 CERROR("Device %d already setup (type %s)\n",
 191                        obd->obd_minor, obd->obd_type->typ_name);
 192                 RETURN(-EBUSY);
 193         }
 194
 195         atomic_set(&obd->obd_refcount, 0);
 196
 197         exp = class_new_export(obd);
 198         if (exp == NULL)
 199                 RETURN(err);
 200         memcpy(&exp->exp_client_uuid, &obd->obd_uuid,
 201                sizeof(exp->exp_client_uuid));
 202         obd->obd_self_export = exp;
 203         class_export_put(exp);
 204
 205         err = obd_setup(obd, sizeof(*lcfg), lcfg);
 206         if (err)
 207                 GOTO(err_exp, err);
 208
 209         obd->obd_type->typ_refcnt++;
 210         obd->obd_set_up = 1;
 211
 212         RETURN(err);
 213
 214 err_exp:
 215         class_unlink_export(obd->obd_self_export);
 216         obd->obd_self_export = NULL;
 217         RETURN(err);
 218 }
 219
 220 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
 221 {
 222         int minor;
 223         int err = 0;
 224
 225         ENTRY;
 226         if (obd->obd_set_up) {
 227                 CERROR("OBD device %d still set up\n", obd->obd_minor);
 228                 RETURN(-EBUSY);
 229         }
 230         if (!obd->obd_attached) {
 231                 CERROR("OBD device %d not attached\n", obd->obd_minor);
 232                 RETURN(-ENODEV);
 233         }
 234         if (OBP(obd, detach))
 235                 err = OBP(obd,detach)(obd);
 236
 237         if (obd->obd_name) {
 238                 OBD_FREE(obd->obd_name, strlen(obd->obd_name)+1);
 239                 obd->obd_name = NULL;
 240         } else {
 241                 CERROR("device %d: no name at detach\n", obd->obd_minor);
 242         }
 243
 244         obd->obd_attached = 0;
 245         obd->obd_type->typ_refcnt--;
 246         class_put_type(obd->obd_type);
 247         obd->obd_type = NULL;
 248         minor = obd->obd_minor;
 249         memset(obd, 0, sizeof(*obd));
 250         obd->obd_minor = minor;
 251         RETURN(err);
 252 }
 253
 254 static void dump_exports(struct obd_device *obd)
 255 {
 256         struct obd_export *exp, *n;
 257
 258         list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
 259                 struct ptlrpc_reply_state *rs;
 260                 struct ptlrpc_reply_state *first_reply = NULL;
 261                 int                        nreplies = 0;
 262
 263                 list_for_each_entry (rs, &exp->exp_outstanding_replies,
 264                                      rs_exp_list) {
 265                         if (nreplies == 0)
 266                                 first_reply = rs;
 267                         nreplies++;
 268                 }
 269
 270                 CERROR("%s: %p %s %d %d %d: %p %s\n",
 271                        obd->obd_name, exp, exp->exp_client_uuid.uuid,
 272                        atomic_read(&exp->exp_refcount),
 273                        exp->exp_failed, nreplies, first_reply,
 274                        nreplies > 3 ? "..." : "");
 275         }
 276 }
 277
 278 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
 279 {
 280         int flags = 0;
 281         int err = 0;
 282         char *flag;
 283
 284         ENTRY;
 285         if (!obd->obd_set_up) {
 286                 CERROR("Device %d not setup\n", obd->obd_minor);
 287                 RETURN(-ENODEV);
 288         }
 289
 290         if (lcfg->lcfg_inlbuf1) {
 291                 for (flag = lcfg->lcfg_inlbuf1; *flag != 0; flag++)
 292                         switch (*flag) {
 293                         case 'F':
 294                                 flags |= OBD_OPT_FORCE;
 295                                 break;
 296                         case 'A':
 297                                 flags |= OBD_OPT_FAILOVER;
 298                                 break;
 299                         default:
 300                                 CERROR("unrecognised flag '%c'\n",
 301                                        *flag);
 302                         }
 303         }
 304
 305         /* The one reference that should be remaining is the
 306          * obd_self_export */
 307         if (atomic_read(&obd->obd_refcount) <= 1 ||
 308             flags & OBD_OPT_FORCE) {
 309                 /* this will stop new connections, and need to
 310                    do it before class_disconnect_exports() */
 311                 obd->obd_stopping = 1;
 312         }
 313
 314         if (atomic_read(&obd->obd_refcount) > 1) {
 315                 struct l_wait_info lwi = LWI_TIMEOUT_INTR(1 * HZ, NULL,
 316                                                           NULL, NULL);
 317                 int rc;
 318
 319                 if (!(flags & OBD_OPT_FORCE)) {
 320                         CERROR("OBD device %d (%p,%s) has refcount %d\n",
 321                                obd->obd_minor, obd, obd->obd_name,
 322                                atomic_read(&obd->obd_refcount));
 323                         dump_exports(obd);
 324                         GOTO(out, err = -EBUSY);
 325                 }
 326                 class_disconnect_exports(obd, flags);
 327                 CDEBUG(D_IOCTL,
 328                        "%s: waiting for obd refs to go away: %d\n",
 329                        obd->obd_name, atomic_read(&obd->obd_refcount));
 330
 331                 rc = l_wait_event(obd->obd_refcount_waitq,
 332                                   atomic_read(&obd->obd_refcount) < 2, &lwi);
 333                 if (rc == 0) {
 334                         LASSERT(atomic_read(&obd->obd_refcount) == 1);
 335                 } else {
 336                         CERROR("wait cancelled cleaning anyway. "
 337                                "refcount: %d\n",
 338                                atomic_read(&obd->obd_refcount));
 339                         dump_exports(obd);
 340                 }
 341                 CDEBUG(D_IOCTL, "%s: awake, now finishing cleanup\n",
 342                        obd->obd_name);
 343         }
 344
 345         if (obd->obd_self_export) {
 346                 err = obd_precleanup(obd, flags);
 347                 if (err)
 348                         GOTO(out, err);
 349                 class_unlink_export(obd->obd_self_export);
 350                 obd->obd_self_export = NULL;
 351         }
 352
 353         err = obd_cleanup(obd, flags);
 354 out:
 355         if (!err) {
 356                 obd->obd_set_up = obd->obd_stopping = 0;
 357                 obd->obd_type->typ_refcnt--;
 358                 /* XXX this should be an LASSERT */
 359                 if (atomic_read(&obd->obd_refcount) > 0)
 360                         CERROR("%s still has refcount %d after "
 361                                "cleanup.\n", obd->obd_name,
 362                                atomic_read(&obd->obd_refcount));
 363         }
 364
 365         RETURN(err);
 366
 367 }
 368
 369 LIST_HEAD(lustre_profile_list);
 370
 371 struct lustre_profile *class_get_profile(char * prof)
 372 {
 373         struct lustre_profile *lprof;
 374
 375         list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
 376                 if (!strcmp(lprof->lp_profile, prof)) {
 377                         RETURN(lprof);
 378                 }
 379         }
 380         RETURN(NULL);
 381 }
 382
 383 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
 384                       int mdclen, char *mdc)
 385 {
 386         struct lustre_profile *lprof;
 387         int err = 0;
 388
 389         OBD_ALLOC(lprof, sizeof(*lprof));
 390         if (lprof == NULL)
 391                 GOTO(out, err = -ENOMEM);
 392         INIT_LIST_HEAD(&lprof->lp_list);
 393
 394         LASSERT(proflen == (strlen(prof) + 1));
 395         OBD_ALLOC(lprof->lp_profile, proflen);
 396         if (lprof->lp_profile == NULL)
 397                 GOTO(out, err = -ENOMEM);
 398         memcpy(lprof->lp_profile, prof, proflen);
 399
 400         LASSERT(osclen == (strlen(osc) + 1));
 401         OBD_ALLOC(lprof->lp_osc, osclen);
 402         if (lprof->lp_profile == NULL)
 403                 GOTO(out, err = -ENOMEM);
 404         memcpy(lprof->lp_osc, osc, osclen);
 405
 406         if (mdclen > 0) {
 407                 LASSERT(mdclen == (strlen(mdc) + 1));
 408                 OBD_ALLOC(lprof->lp_mdc, mdclen);
 409                 if (lprof->lp_mdc == NULL)
 410                         GOTO(out, err = -ENOMEM);
 411                 memcpy(lprof->lp_mdc, mdc, mdclen);
 412         }
 413
 414         list_add(&lprof->lp_list, &lustre_profile_list);
 415
 416 out:
 417         RETURN(err);
 418 }
 419
 420 void class_del_profile(char *prof)
 421 {
 422         struct lustre_profile *lprof;
 423
 424         lprof = class_get_profile(prof);
 425         if (lprof) {
 426                 list_del(&lprof->lp_list);
 427                 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
 428                 OBD_FREE(lprof->lp_osc, strlen(lprof->lp_osc) + 1);
 429                 if (lprof->lp_mdc)
 430                         OBD_FREE(lprof->lp_mdc, strlen(lprof->lp_mdc) + 1);
 431                 OBD_FREE(lprof, sizeof *lprof);
 432         }
 433 }
 434
 435 int class_process_config(struct lustre_cfg *lcfg)
 436 {
 437         struct obd_device *obd;
 438         char str[PTL_NALFMT_SIZE];
 439         int err;
 440
 441         LASSERT(lcfg && !IS_ERR(lcfg));
 442
 443         CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
 444
 445         /* Commands that don't need a device */
 446         switch(lcfg->lcfg_command) {
 447         case LCFG_ATTACH: {
 448                 err = class_attach(lcfg);
 449                 GOTO(out, err);
 450         }
 451         case LCFG_ADD_UUID: {
 452                 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
 453                        " (%s), nal %d\n", lcfg->lcfg_inlbuf1, lcfg->lcfg_nid,
 454                        portals_nid2str(lcfg->lcfg_nal, lcfg->lcfg_nid, str),
 455                        lcfg->lcfg_nal);
 456
 457                 err = class_add_uuid(lcfg->lcfg_inlbuf1, lcfg->lcfg_nid,
 458                                      lcfg->lcfg_nal);
 459                 GOTO(out, err);
 460         }
 461         case LCFG_DEL_UUID: {
 462                 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
 463                        lcfg->lcfg_inlbuf1 == NULL ? "<all uuids>" :
 464                        lcfg->lcfg_inlbuf1);
 465
 466                 err = class_del_uuid(lcfg->lcfg_inlbuf1);
 467                 GOTO(out, err);
 468         }
 469         case LCFG_MOUNTOPT: {
 470                 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
 471                        lcfg->lcfg_inlbuf1, lcfg->lcfg_inlbuf2,
 472                        lcfg->lcfg_inlbuf3);
 473                 /* set these mount options somewhere, so ll_fill_super
 474                  * can find them. */
 475                 err = class_add_profile(lcfg->lcfg_inllen1, lcfg->lcfg_inlbuf1,
 476                                         lcfg->lcfg_inllen2, lcfg->lcfg_inlbuf2,
 477                                         lcfg->lcfg_inllen3, lcfg->lcfg_inlbuf3);
 478                 GOTO(out, err);
 479         }
 480         case LCFG_DEL_MOUNTOPT: {
 481                 CDEBUG(D_IOCTL, "mountopt: profile %s\n", lcfg->lcfg_inlbuf1);
 482                 /* set these mount options somewhere, so ll_fill_super
 483                  * can find them. */
 484                 class_del_profile(lcfg->lcfg_inlbuf1);
 485                 GOTO(out, err = 0);
 486         }
 487         case LCFG_SET_TIMEOUT: {
 488                 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
 489                        obd_timeout,
 490                        lcfg->lcfg_num);
 491                 obd_timeout = lcfg->lcfg_num;
 492                 GOTO(out, err = 0);
 493         }
 494         case LCFG_SET_UPCALL: {
 495                 CDEBUG(D_IOCTL, "setting lustre ucpall to: %s\n",
 496                        lcfg->lcfg_inlbuf1);
 497                 if (lcfg->lcfg_inllen1 > sizeof obd_lustre_upcall)
 498                         GOTO(out, err = -EINVAL);
 499                 memcpy(obd_lustre_upcall, lcfg->lcfg_inlbuf1,
 500                        lcfg->lcfg_inllen1);
 501                 GOTO(out, err = 0);
 502         }
 503         }
 504
 505         /* Commands that require a device */
 506         obd = class_name2obd(lcfg->lcfg_dev_name);
 507         if (obd == NULL) {
 508                 if (lcfg->lcfg_dev_name == NULL)
 509                         CERROR("this lcfg command requires a device name\n");
 510                 else
 511                         CERROR("no device for: %s\n", lcfg->lcfg_dev_name);
 512
 513                 GOTO(out, err = -EINVAL);
 514         }
 515
 516         switch(lcfg->lcfg_command) {
 517         case LCFG_SETUP: {
 518                 err = class_setup(obd, lcfg);
 519                 GOTO(out, err);
 520         }
 521         case LCFG_DETACH: {
 522                 err = class_detach(obd, lcfg);
 523                 GOTO(out, err = 0);
 524         }
 525         case LCFG_CLEANUP: {
 526                 err = class_cleanup(obd, lcfg);
 527                 GOTO(out, err = 0);
 528         }
 529         default: {
 530                 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
 531                 GOTO(out, err = -EINVAL);
 532
 533         }
 534         }
 535 out:
 536         RETURN(err);
 537 }
 538
 539 static int class_config_llog_handler(struct llog_handle * handle,
 540                                      struct llog_rec_hdr *rec, void *data)
 541 {
 542         struct config_llog_instance *cfg = data;
 543         int cfg_len = rec->lrh_len;
 544         char *cfg_buf = (char*) (rec + 1);
 545         int rc = 0;
 546         ENTRY;
 547         if (rec->lrh_type == OBD_CFG_REC) {
 548                 char *buf;
 549                 struct lustre_cfg *lcfg;
 550                 char *old_name = NULL;
 551                 int old_len = 0;
 552                 char *old_uuid = NULL;
 553                 int old_uuid_len = 0;
 554                 char *inst_name = NULL;
 555                 int inst_len = 0;
 556
 557                 rc = lustre_cfg_getdata(&buf, cfg_len, cfg_buf, 1);
 558                 if (rc)
 559                         GOTO(out, rc);
 560                 lcfg = (struct lustre_cfg* ) buf;
 561
 562                 if (cfg && cfg->cfg_instance && lcfg->lcfg_dev_name) {
 563                         inst_len = strlen(lcfg->lcfg_dev_name) +
 564                                 strlen(cfg->cfg_instance) + 2;
 565                         OBD_ALLOC(inst_name, inst_len);
 566                         if (inst_name == NULL)
 567                                 GOTO(out, rc = -ENOMEM);
 568                         sprintf(inst_name, "%s-%s", lcfg->lcfg_dev_name,
 569                                 cfg->cfg_instance);
 570                         old_name = lcfg->lcfg_dev_name;
 571                         old_len = lcfg->lcfg_dev_namelen;
 572                         lcfg->lcfg_dev_name = inst_name;
 573                         lcfg->lcfg_dev_namelen = strlen(inst_name) + 1;
 574                 }
 575
 576                 if (cfg && lcfg->lcfg_command == LCFG_ATTACH) {
 577                         old_uuid = lcfg->lcfg_inlbuf2;
 578                         old_uuid_len = lcfg->lcfg_inllen2;
 579
 580                         lcfg->lcfg_inlbuf2 = (char*)&cfg->cfg_uuid.uuid;
 581                         lcfg->lcfg_inllen2 = sizeof(cfg->cfg_uuid);
 582                 }
 583
 584                 rc = class_process_config(lcfg);
 585
 586                 if (old_name) {
 587                         lcfg->lcfg_dev_name = old_name;
 588                         lcfg->lcfg_dev_namelen = old_len;
 589                         OBD_FREE(inst_name, inst_len);
 590                 }
 591
 592                 if (old_uuid) {
 593                         lcfg->lcfg_inlbuf2 = old_uuid;
 594                         lcfg->lcfg_inllen2 = old_uuid_len;
 595                 }
 596
 597                 lustre_cfg_freedata(buf, cfg_len);
 598         } else if (rec->lrh_type == PTL_CFG_REC) {
 599                 struct portals_cfg *pcfg = (struct portals_cfg *)cfg_buf;
 600                 if (pcfg->pcfg_command ==NAL_CMD_REGISTER_MYNID &&
 601                     cfg->cfg_local_nid != PTL_NID_ANY) {
 602                         pcfg->pcfg_nid = cfg->cfg_local_nid;
 603                 }
 604
 605                 rc = libcfs_nal_cmd(pcfg);
 606         }
 607 out:
 608         RETURN(rc);
 609 }
 610
 611 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
 612                             struct config_llog_instance *cfg)
 613 {
 614         struct llog_handle *llh;
 615         int rc, rc2;
 616         ENTRY;
 617
 618         rc = llog_create(ctxt, &llh, NULL, name);
 619         if (rc)
 620                 RETURN(rc);
 621
 622         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
 623         if (rc)
 624                 GOTO(parse_out, rc);
 625
 626         rc = llog_process(llh, class_config_llog_handler, cfg, NULL);
 627 parse_out:
 628         rc2 = llog_close(llh);
 629         if (rc == 0)
 630                 rc = rc2;
 631
 632         RETURN(rc);
 633
 634 }
 635
 636 static int class_config_dump_handler(struct llog_handle * handle,
 637                                      struct llog_rec_hdr *rec, void *data)
 638 {
 639         int cfg_len = rec->lrh_len;
 640         char *cfg_buf = (char*) (rec + 1);
 641         int rc = 0;
 642         ENTRY;
 643         if (rec->lrh_type == OBD_CFG_REC) {
 644                 char *buf;
 645                 struct lustre_cfg *lcfg;
 646
 647                 rc = lustre_cfg_getdata(&buf, cfg_len, cfg_buf, 1);
 648                 if (rc)
 649                         GOTO(out, rc);
 650                 lcfg = (struct lustre_cfg* ) buf;
 651
 652                 CDEBUG(D_INFO, "lcfg command: %x\n", lcfg->lcfg_command);
 653                 if (lcfg->lcfg_dev_name)
 654                         CDEBUG(D_INFO, "     devname: %s\n",
 655                                lcfg->lcfg_dev_name);
 656                 if (lcfg->lcfg_flags)
 657                         CDEBUG(D_INFO, "       flags: %x\n", lcfg->lcfg_flags);
 658                 if (lcfg->lcfg_nid)
 659                         CDEBUG(D_INFO, "         nid: "LPX64"\n",
 660                                lcfg->lcfg_nid);
 661                 if (lcfg->lcfg_nal)
 662                         CDEBUG(D_INFO, "         nal: %x\n", lcfg->lcfg_nal);
 663                 if (lcfg->lcfg_num)
 664                         CDEBUG(D_INFO, "         nal: %x\n", lcfg->lcfg_num);
 665                 if (lcfg->lcfg_inlbuf1)
 666                         CDEBUG(D_INFO, "     inlbuf1: %s\n",lcfg->lcfg_inlbuf1);
 667                 if (lcfg->lcfg_inlbuf2)
 668                         CDEBUG(D_INFO, "     inlbuf3: %s\n",lcfg->lcfg_inlbuf2);
 669                 if (lcfg->lcfg_inlbuf3)
 670                         CDEBUG(D_INFO, "     inlbuf3: %s\n",lcfg->lcfg_inlbuf3);
 671                 if (lcfg->lcfg_inlbuf4)
 672                         CDEBUG(D_INFO, "     inlbuf4: %s\n",lcfg->lcfg_inlbuf4);
 673                 if (lcfg->lcfg_inlbuf5)
 674                         CDEBUG(D_INFO, "     inlbuf5: %s\n",lcfg->lcfg_inlbuf5);
 675                 if (lcfg->lcfg_inlbuf6)
 676                         CDEBUG(D_INFO, "     inlbuf6: %s\n",lcfg->lcfg_inlbuf6);
 677
 678                 lustre_cfg_freedata(buf, cfg_len);
 679         } else if (rec->lrh_type == PTL_CFG_REC) {
 680                 struct portals_cfg *pcfg = (struct portals_cfg *)cfg_buf;
 681
 682                 CDEBUG(D_INFO, "pcfg command: %d\n", pcfg->pcfg_command);
 683                 if (pcfg->pcfg_nal)
 684                         CDEBUG(D_INFO, "         nal: %d\n",
 685                                pcfg->pcfg_nal);
 686                 if (pcfg->pcfg_gw_nal)
 687                         CDEBUG(D_INFO, "      gw_nal: %d\n",
 688                                pcfg->pcfg_gw_nal);
 689                 if (pcfg->pcfg_nid)
 690                         CDEBUG(D_INFO, "         nid: "LPX64"\n",
 691                                pcfg->pcfg_nid);
 692                 if (pcfg->pcfg_nid2)
 693                         CDEBUG(D_INFO, "         nid: "LPX64"\n",
 694                                pcfg->pcfg_nid2);
 695                 if (pcfg->pcfg_nid3)
 696                         CDEBUG(D_INFO, "         nid: "LPX64"\n",
 697                                pcfg->pcfg_nid3);
 698                 if (pcfg->pcfg_misc)
 699                         CDEBUG(D_INFO, "         nid: %d\n",
 700                                pcfg->pcfg_misc);
 701                 if (pcfg->pcfg_id)
 702                         CDEBUG(D_INFO, "          id: %x\n",
 703                                pcfg->pcfg_id);
 704                 if (pcfg->pcfg_flags)
 705                         CDEBUG(D_INFO, "       flags: %x\n",
 706                                pcfg->pcfg_flags);
 707         } else {
 708                 CERROR("unhandled lrh_type: %#x\n", rec->lrh_type);
 709                 rc = -EINVAL;
 710         }
 711 out:
 712         RETURN(rc);
 713 }
 714
 715 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
 716                            struct config_llog_instance *cfg)
 717 {
 718         struct llog_handle *llh;
 719         int rc, rc2;
 720         ENTRY;
 721
 722         rc = llog_create(ctxt, &llh, NULL, name);
 723         if (rc)
 724                 RETURN(rc);
 725
 726         rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
 727         if (rc)
 728                 GOTO(parse_out, rc);
 729
 730         rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
 731 parse_out:
 732         rc2 = llog_close(llh);
 733         if (rc == 0)
 734                 rc = rc2;
 735
 736         RETURN(rc);
 737
 738 }