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