lustre/utils/llog_reader.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2016, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  */
  32 /** \defgroup llog_reader Lustre Log Reader
  33  *
  34  * Interpret llogs used for storing configuration and changelog data
  35  *
  36  * @{
  37  */
  38
  39 #include <errno.h>
  40 #include <limits.h>
  41 #include <stdbool.h>
  42 #include <stdio.h>
  43 #include <string.h>
  44 #include <sys/types.h>
  45 #include <sys/stat.h>
  46 #ifdef HAVE_ENDIAN_H
  47 # include <endian.h>
  48 #endif
  49 #include <unistd.h>
  50 #include <fcntl.h>
  51 #include <sys/vfs.h>
  52 #include <linux/magic.h>
  53 #include <errno.h>
  54 #include <time.h>
  55 #include <lnet/nidstr.h>
  56 #include <lustre/lustre_idl.h>
  57 #include <lustre/lustreapi.h>
  58 #include <lustre_log_user.h>
  59 #include <lustre_cfg.h>
  60
  61 static inline int ext2_test_bit(int nr, const void *addr)
  62 {
  63 #if __BYTE_ORDER == __BIG_ENDIAN
  64         const unsigned char *tmp = addr;
  65         return (tmp[nr >> 3] >> (nr & 7)) & 1;
  66 #else
  67         const unsigned long *tmp = addr;
  68         return ((1UL << (nr & (__WORDSIZE - 1))) &
  69                 ((tmp)[nr / __WORDSIZE])) != 0;
  70 #endif
  71 }
  72
  73 int llog_pack_buffer(int fd, struct llog_log_hdr **llog_buf,
  74                      struct llog_rec_hdr ***recs, int *recs_number);
  75
  76 void print_llog_header(struct llog_log_hdr *llog_buf);
  77 static void print_records(struct llog_rec_hdr **recs_buf,
  78                           int rec_number, int is_ext);
  79 void llog_unpack_buffer(int fd, struct llog_log_hdr *llog_buf,
  80                         struct llog_rec_hdr **recs_buf);
  81
  82 #define CANCELLED 0x678
  83
  84 #define PTL_CMD_BASE 100
  85 char* portals_command[17]=
  86 {
  87         "REGISTER_PEER_FD",
  88         "CLOSE_CONNECTION",
  89         "REGISTER_MYNID",
  90         "PUSH_CONNECTION",
  91         "GET_CONN",
  92         "DEL_PEER",
  93         "ADD_PEER",
  94         "GET_PEER",
  95         "GET_TXDESC",
  96         "ADD_ROUTE",
  97         "DEL_ROUTE",
  98         "GET_ROUTE",
  99         "NOTIFY_ROUTER",
 100         "ADD_INTERFACE",
 101         "DEL_INTERFACE",
 102         "GET_INTERFACE",
 103         ""
 104 };
 105
 106 int is_fstype_ext(int fd)
 107 {
 108         struct statfs           st;
 109         int                     rc;
 110
 111         rc = fstatfs(fd, &st);
 112         if (rc < 0) {
 113                 llapi_error(LLAPI_MSG_ERROR, rc, "Got statfs error.");
 114                 return -errno;
 115         }
 116
 117         return (st.f_type == EXT4_SUPER_MAGIC);
 118 }
 119
 120
 121 /**
 122  * Attempt to display a path to the object (file) containing changelog entries,
 123  * referred to by this changelog_catalog record.
 124  *
 125  * This path depends on the implementation of the OSD device; zfs-osd and
 126  * ldiskfs-osd are different.
 127  *
 128  * Assumes that if the file system containing the changelog_catalog is
 129  * ext{2,3,4}, the backend is ldiskfs-osd; otherwise it is either zfs-osd or at
 130  * least names objects based on FID and the zfs-osd path (which includes the
 131  * FID) will be sufficient.
 132  *
 133  * The Object ID stored in the record is also displayed untranslated.
 134  */
 135 #define OSD_OI_FID_NR         (1UL << 7)
 136 static void print_log_path(struct llog_logid_rec *lid, int is_ext)
 137 {
 138
 139         char                    object_path[255];
 140         struct lu_fid           fid_from_logid;
 141
 142         logid_to_fid(&lid->lid_id, &fid_from_logid);
 143
 144         if (is_ext)
 145                 snprintf(object_path, sizeof(object_path),
 146                          "O/%ju/d%u/%u", (uintmax_t)fid_from_logid.f_seq,
 147                          fid_from_logid.f_oid % 32,
 148                          fid_from_logid.f_oid);
 149         else
 150                 snprintf(object_path, sizeof(object_path),
 151                          "oi.%ju/"DFID_NOBRACE,
 152                          (uintmax_t)(fid_from_logid.f_seq & (OSD_OI_FID_NR - 1)),
 153                          PFID(&fid_from_logid));
 154
 155         printf("ogen=%X id="DOSTID" path=%s\n",
 156                 lid->lid_id.lgl_ogen, POSTID(&lid->lid_id.lgl_oi),
 157                 object_path);
 158 }
 159
 160 int main(int argc, char **argv)
 161 {
 162         int rc = 0;
 163         int is_ext;
 164         int fd, rec_number;
 165         struct llog_log_hdr *llog_buf = NULL;
 166         struct llog_rec_hdr **recs_buf = NULL;
 167
 168         setlinebuf(stdout);
 169
 170         if (argc != 2) {
 171                 printf("Usage: llog_reader filename\n");
 172                 return -1;
 173         }
 174
 175         fd = open(argv[1], O_RDONLY);
 176         if (fd < 0) {
 177                 rc = -errno;
 178                 llapi_error(LLAPI_MSG_ERROR, rc, "Could not open the file %s.",
 179                             argv[1]);
 180                 goto out;
 181         }
 182
 183         is_ext = is_fstype_ext(fd);
 184         if (is_ext < 0) {
 185                 rc = is_ext;
 186                 printf("Unable to determine type of filesystem containing %s\n",
 187                        argv[1]);
 188                 goto out_fd;
 189         }
 190
 191         rc = llog_pack_buffer(fd, &llog_buf, &recs_buf, &rec_number);
 192         if (rc < 0) {
 193                 llapi_error(LLAPI_MSG_ERROR, rc, "Could not pack buffer.");
 194                 goto out_fd;
 195         }
 196
 197         print_llog_header(llog_buf);
 198         print_records(recs_buf, rec_number, is_ext);
 199         llog_unpack_buffer(fd, llog_buf, recs_buf);
 200
 201 out_fd:
 202         close(fd);
 203 out:
 204         return rc;
 205 }
 206
 207
 208
 209 int llog_pack_buffer(int fd, struct llog_log_hdr **llog,
 210                      struct llog_rec_hdr ***recs,
 211                      int *recs_number)
 212 {
 213         int rc = 0, recs_num, rd = 0;
 214         long long file_size;
 215         struct stat st;
 216         char *file_buf = NULL, *recs_buf = NULL;
 217         struct llog_rec_hdr **recs_pr = NULL;
 218         char *ptr = NULL;
 219         int i;
 220
 221         rc = fstat(fd, &st);
 222         if (rc < 0) {
 223                 rc = -errno;
 224                 llapi_error(LLAPI_MSG_ERROR, rc, "Got file stat error.");
 225                 goto out;
 226         }
 227
 228         file_size = st.st_size;
 229         if (file_size < sizeof(**llog)) {
 230                 llapi_error(LLAPI_MSG_ERROR, rc,
 231                             "File too small for llog header: "
 232                             "need %zd, size %lld\n",
 233                             sizeof(**llog), file_size);
 234                 rc = -EIO;
 235                 goto out;
 236         }
 237
 238         file_buf = malloc(file_size);
 239         if (file_buf == NULL) {
 240                 rc = -ENOMEM;
 241                 llapi_error(LLAPI_MSG_ERROR, rc, "Memory Alloc for file_buf.");
 242                 goto out;
 243         }
 244         *llog = (struct llog_log_hdr *)file_buf;
 245
 246         do {
 247                 rc = read(fd, file_buf + rd, file_size - rd);
 248                 if (rc > 0)
 249                         rd += rc;
 250         } while (rc > 0 && rd < file_size);
 251
 252         if (rd < file_size) {
 253                 rc = rc < 0 ? -errno : -EIO;
 254                 llapi_error(LLAPI_MSG_ERROR, rc,
 255                             "Error reading llog header: need %zd, got %d",
 256                             sizeof(**llog), rd);
 257                 goto clear_file_buf;
 258         }
 259
 260         /* the llog header not countable here.*/
 261         recs_num = __le32_to_cpu((*llog)->llh_count) - 1;
 262
 263         recs_buf = malloc(recs_num * sizeof(**recs_pr));
 264         if (recs_buf == NULL) {
 265                 rc = -ENOMEM;
 266                 llapi_error(LLAPI_MSG_ERROR, rc,
 267                             "Error allocating %zd bytes for recs_buf",
 268                             recs_num * sizeof(**recs_pr));
 269                 goto clear_file_buf;
 270         }
 271         recs_pr = (struct llog_rec_hdr **)recs_buf;
 272
 273         ptr = file_buf + __le32_to_cpu((*llog)->llh_hdr.lrh_len);
 274         i = 0;
 275
 276         while (ptr < (file_buf + file_size)) {
 277                 struct llog_rec_hdr *cur_rec;
 278                 int idx;
 279                 unsigned long offset;
 280
 281                 if (ptr + sizeof(**recs_pr) > file_buf + file_size) {
 282                         rc = -EINVAL;
 283                         llapi_error(LLAPI_MSG_ERROR, rc,
 284                                     "The log is corrupt (too big at %d)", i);
 285                         goto clear_recs_buf;
 286                 }
 287
 288                 cur_rec = (struct llog_rec_hdr *)ptr;
 289                 idx = __le32_to_cpu(cur_rec->lrh_index);
 290                 recs_pr[i] = cur_rec;
 291                 offset = (unsigned long)ptr - (unsigned long)file_buf;
 292                 if (cur_rec->lrh_len == 0 ||
 293                     cur_rec->lrh_len > (*llog)->llh_hdr.lrh_len) {
 294                         cur_rec->lrh_len = (*llog)->llh_hdr.lrh_len -
 295                                 offset % (*llog)->llh_hdr.lrh_len;
 296                         printf("off %lu skip %u to next chunk.\n", offset,
 297                                cur_rec->lrh_len);
 298                         i--;
 299                 } else if (ext2_test_bit(idx, LLOG_HDR_BITMAP(*llog))) {
 300                         printf("rec #%d type=%x len=%u offset %lu\n", idx,
 301                                cur_rec->lrh_type, cur_rec->lrh_len, offset);
 302                 } else {
 303                         printf("Bit %d of %d not set\n", idx, recs_num);
 304                         cur_rec->lrh_id = CANCELLED;
 305                         /* The header counts only set records */
 306                         i--;
 307                 }
 308
 309                 ptr += __le32_to_cpu(cur_rec->lrh_len);
 310                 if ((ptr - file_buf) > file_size) {
 311                         printf("The log is corrupt (too big at %d)\n", i);
 312                         rc = -EINVAL;
 313                         goto clear_recs_buf;
 314                 }
 315                 i++;
 316         }
 317
 318         *recs = recs_pr;
 319         *recs_number = recs_num;
 320
 321 out:
 322         return rc;
 323
 324 clear_recs_buf:
 325         free(recs_buf);
 326
 327 clear_file_buf:
 328         free(file_buf);
 329
 330         *llog = NULL;
 331         goto out;
 332 }
 333
 334 void llog_unpack_buffer(int fd, struct llog_log_hdr *llog_buf,
 335                         struct llog_rec_hdr **recs_buf)
 336 {
 337         free(llog_buf);
 338         free(recs_buf);
 339         return;
 340 }
 341
 342 void print_llog_header(struct llog_log_hdr *llog_buf)
 343 {
 344         time_t t;
 345
 346         printf("Header size : %u\n",
 347                __le32_to_cpu(llog_buf->llh_hdr.lrh_len));
 348
 349         t = __le64_to_cpu(llog_buf->llh_timestamp);
 350         printf("Time : %s", ctime(&t));
 351
 352         printf("Number of records: %u\n",
 353                __le32_to_cpu(llog_buf->llh_count)-1);
 354
 355         printf("Target uuid : %s\n",
 356                (char *)(&llog_buf->llh_tgtuuid));
 357
 358         /* Add the other info you want to view here */
 359
 360         printf("-----------------------\n");
 361         return;
 362 }
 363
 364 static void print_1_cfg(struct lustre_cfg *lcfg)
 365 {
 366         int i;
 367
 368         if (lcfg->lcfg_nid)
 369                 printf("nid=%s(%#jx)  ", libcfs_nid2str(lcfg->lcfg_nid),
 370                        (uintmax_t)lcfg->lcfg_nid);
 371         if (lcfg->lcfg_nal)
 372                 printf("nal=%d ", lcfg->lcfg_nal);
 373         for (i = 0; i <  lcfg->lcfg_bufcount; i++)
 374                 printf("%d:%.*s  ", i, lcfg->lcfg_buflens[i],
 375                        (char*)lustre_cfg_buf(lcfg, i));
 376         return;
 377 }
 378
 379
 380 static void print_setup_cfg(struct lustre_cfg *lcfg)
 381 {
 382         struct lov_desc *desc;
 383
 384         if ((lcfg->lcfg_bufcount == 2) &&
 385             (lcfg->lcfg_buflens[1] == sizeof(*desc))) {
 386                 printf("lov_setup ");
 387                 printf("0:%s  ", lustre_cfg_string(lcfg, 0));
 388                 printf("1:(struct lov_desc)\n");
 389                 desc = (struct lov_desc*)(lustre_cfg_string(lcfg, 1));
 390                 printf("\t\tuuid=%s  ", (char*)desc->ld_uuid.uuid);
 391                 printf("stripe:cnt=%u ", desc->ld_default_stripe_count);
 392                 printf("size=%ju ", (uintmax_t)desc->ld_default_stripe_size);
 393                 printf("offset=%ju ",
 394                        (uintmax_t)desc->ld_default_stripe_offset);
 395                 printf("pattern=%#x", desc->ld_pattern);
 396         } else {
 397                 printf("setup     ");
 398                 print_1_cfg(lcfg);
 399         }
 400
 401         return;
 402 }
 403
 404 void print_lustre_cfg(struct lustre_cfg *lcfg, int *skip)
 405 {
 406         enum lcfg_command_type cmd = __le32_to_cpu(lcfg->lcfg_command);
 407
 408         if (*skip > 0)
 409                 printf("SKIP ");
 410
 411         switch(cmd){
 412         case(LCFG_ATTACH):{
 413                 printf("attach    ");
 414                 print_1_cfg(lcfg);
 415                 break;
 416         }
 417         case(LCFG_SETUP):{
 418                 print_setup_cfg(lcfg);
 419                 break;
 420         }
 421         case(LCFG_DETACH):{
 422                 printf("detach    ");
 423                 print_1_cfg(lcfg);
 424                 break;
 425         }
 426         case(LCFG_CLEANUP):{
 427                 printf("cleanup   ");
 428                 print_1_cfg(lcfg);
 429                 break;
 430         }
 431         case(LCFG_ADD_UUID):{
 432                 printf("add_uuid  ");
 433                 print_1_cfg(lcfg);
 434                 break;
 435         }
 436         case(LCFG_DEL_UUID):{
 437                 printf("del_uuid  ");
 438                 print_1_cfg(lcfg);
 439                 break;
 440         }
 441         case(LCFG_ADD_CONN):{
 442                 printf("add_conn  ");
 443                 print_1_cfg(lcfg);
 444                 break;
 445         }
 446         case(LCFG_DEL_CONN):{
 447                 printf("del_conn  ");
 448                 print_1_cfg(lcfg);
 449                 break;
 450         }
 451         case(LCFG_LOV_ADD_OBD):{
 452                 printf("lov_modify_tgts add ");
 453                 print_1_cfg(lcfg);
 454                 break;
 455         }
 456         case(LCFG_LOV_DEL_OBD):{
 457                 printf("lov_modify_tgts del ");
 458                 print_1_cfg(lcfg);
 459                 break;
 460         }
 461         case(LCFG_ADD_MDC):{
 462                 printf("modify_mdc_tgts add ");
 463                 print_1_cfg(lcfg);
 464                 break;
 465         }
 466         case(LCFG_DEL_MDC):{
 467                 printf("modify_mdc_tgts del ");
 468                 print_1_cfg(lcfg);
 469                 break;
 470         }
 471         case(LCFG_MOUNTOPT):{
 472                 printf("mount_option ");
 473                 print_1_cfg(lcfg);
 474                 break;
 475         }
 476         case(LCFG_DEL_MOUNTOPT):{
 477                 printf("del_mount_option ");
 478                 print_1_cfg(lcfg);
 479                 break;
 480         }
 481         case(LCFG_SET_TIMEOUT):{
 482                 printf("set_timeout=%d ", lcfg->lcfg_num);
 483                 break;
 484         }
 485         case(LCFG_SET_LDLM_TIMEOUT):{
 486                 printf("set_ldlm_timeout=%d ", lcfg->lcfg_num);
 487                 break;
 488         }
 489         case(LCFG_SET_UPCALL):{
 490                 printf("set_lustre_upcall ");
 491                 print_1_cfg(lcfg);
 492                 break;
 493         }
 494         case(LCFG_PARAM):{
 495                 printf("param ");
 496                 print_1_cfg(lcfg);
 497                 break;
 498         }
 499         case(LCFG_SET_PARAM):{
 500                 printf("set_param ");
 501                 print_1_cfg(lcfg);
 502                 break;
 503         }
 504         case(LCFG_SPTLRPC_CONF):{
 505                 printf("sptlrpc_conf ");
 506                 print_1_cfg(lcfg);
 507                 break;
 508         }
 509         case(LCFG_MARKER):{
 510                 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
 511                 char createtime[26], canceltime[26] = "";
 512                 time_t time_tmp;
 513
 514                 if (marker->cm_flags & CM_START &&
 515                     marker->cm_flags & CM_SKIP) {
 516                         printf("SKIP START ");
 517                         (*skip)++;
 518                 } else if (marker->cm_flags & CM_END) {
 519                         printf(     "END   ");
 520                         *skip = 0;
 521                 }
 522
 523                 if (marker->cm_flags & CM_EXCLUDE) {
 524                         if (marker->cm_flags & CM_START)
 525                                 printf("EXCLUDE START ");
 526                         else
 527                                 printf("EXCLUDE END   ");
 528                 }
 529
 530                 /* Handle overflow of 32-bit time_t gracefully.
 531                  * The copy to time_tmp is needed in any case to
 532                  * keep the pointer happy, even on 64-bit systems. */
 533                 time_tmp = marker->cm_createtime;
 534                 if (time_tmp == marker->cm_createtime) {
 535                         ctime_r(&time_tmp, createtime);
 536                         createtime[strlen(createtime) - 1] = 0;
 537                 } else {
 538                         strcpy(createtime, "in the distant future");
 539                 }
 540
 541                 if (marker->cm_canceltime) {
 542                         /* Like cm_createtime, we try to handle overflow of
 543                          * 32-bit time_t gracefully. The copy to time_tmp
 544                          * is also needed on 64-bit systems to keep the
 545                          * pointer happy, see bug 16771 */
 546                         time_tmp = marker->cm_canceltime;
 547                         if (time_tmp == marker->cm_canceltime) {
 548                                 ctime_r(&time_tmp, canceltime);
 549                                 canceltime[strlen(canceltime) - 1] = 0;
 550                         } else {
 551                                 strcpy(canceltime, "in the distant future");
 552                         }
 553                 }
 554
 555                 printf("marker %3d (flags=%#04x, v%d.%d.%d.%d) %-15s '%s' %s-%s",
 556                        marker->cm_step, marker->cm_flags,
 557                        OBD_OCD_VERSION_MAJOR(marker->cm_vers),
 558                        OBD_OCD_VERSION_MINOR(marker->cm_vers),
 559                        OBD_OCD_VERSION_PATCH(marker->cm_vers),
 560                        OBD_OCD_VERSION_FIX(marker->cm_vers),
 561                        marker->cm_tgtname, marker->cm_comment,
 562                        createtime, canceltime);
 563                 break;
 564         }
 565         case(LCFG_POOL_NEW):{
 566                 printf("pool new ");
 567                 print_1_cfg(lcfg);
 568                 break;
 569         }
 570         case(LCFG_POOL_ADD):{
 571                 printf("pool add ");
 572                 print_1_cfg(lcfg);
 573                 break;
 574         }
 575         case(LCFG_POOL_REM):{
 576                 printf("pool remove ");
 577                 print_1_cfg(lcfg);
 578                 break;
 579         }
 580         case(LCFG_POOL_DEL):{
 581                 printf("pool destroy ");
 582                 print_1_cfg(lcfg);
 583                 break;
 584         }
 585         default:
 586                 printf("unsupported cmd_code = %x\n",cmd);
 587         }
 588         printf("\n");
 589         return;
 590 }
 591
 592 static void print_hsm_action(struct llog_agent_req_rec *larr)
 593 {
 594         char    buf[12];
 595         int     sz;
 596
 597         sz = larr->arr_hai.hai_len - sizeof(larr->arr_hai);
 598         printf("lrh=[type=%X len=%d idx=%d] fid="DFID
 599                " compound/cookie=%#jx/%#jx"
 600                " status=%s action=%s archive#=%d flags=%#jx"
 601                " create=%ju change=%ju"
 602                " extent=%#jx-%#jx gid=%#jx datalen=%d"
 603                " data=[%s]\n",
 604                larr->arr_hdr.lrh_type,
 605                larr->arr_hdr.lrh_len, larr->arr_hdr.lrh_index,
 606                PFID(&larr->arr_hai.hai_fid),
 607                (uintmax_t)larr->arr_compound_id,
 608                (uintmax_t)larr->arr_hai.hai_cookie,
 609                agent_req_status2name(larr->arr_status),
 610                hsm_copytool_action2name(larr->arr_hai.hai_action),
 611                larr->arr_archive_id,
 612                (uintmax_t)larr->arr_flags,
 613                (uintmax_t)larr->arr_req_create,
 614                (uintmax_t)larr->arr_req_change,
 615                (uintmax_t)larr->arr_hai.hai_extent.offset,
 616                (uintmax_t)larr->arr_hai.hai_extent.length,
 617                (uintmax_t)larr->arr_hai.hai_gid, sz,
 618                hai_dump_data_field(&larr->arr_hai, buf, sizeof(buf)));
 619 }
 620
 621 void print_changelog_rec(struct llog_changelog_rec *rec)
 622 {
 623         printf("changelog record id:0x%x cr_flags:0x%x cr_type:%s(0x%x)\n",
 624                __le32_to_cpu(rec->cr_hdr.lrh_id),
 625                __le32_to_cpu(rec->cr.cr_flags),
 626                changelog_type2str(__le32_to_cpu(rec->cr.cr_type)),
 627                __le32_to_cpu(rec->cr.cr_type));
 628 }
 629
 630 static void print_records(struct llog_rec_hdr **recs,
 631                           int rec_number, int is_ext)
 632 {
 633         __u32 lopt;
 634         int i, skip = 0;
 635
 636         for (i = 0; i < rec_number; i++) {
 637                 printf("#%.2d (%.3d)", __le32_to_cpu(recs[i]->lrh_index),
 638                        __le32_to_cpu(recs[i]->lrh_len));
 639
 640                 lopt = __le32_to_cpu(recs[i]->lrh_type);
 641
 642                 if (recs[i]->lrh_id == CANCELLED)
 643                         printf("NOT SET ");
 644
 645                 switch (lopt) {
 646                 case OBD_CFG_REC:
 647                         print_lustre_cfg(
 648                                 (struct lustre_cfg *)((char *)(recs[i]) +
 649                                 sizeof(struct llog_rec_hdr)), &skip);
 650                         break;
 651                 case LLOG_PAD_MAGIC:
 652                         printf("padding\n");
 653                         break;
 654                 case LLOG_LOGID_MAGIC:
 655                         print_log_path((struct llog_logid_rec *)recs[i],
 656                                        is_ext);
 657                         break;
 658                 case HSM_AGENT_REC:
 659                         print_hsm_action((struct llog_agent_req_rec *)recs[i]);
 660                         break;
 661                 case CHANGELOG_REC:
 662                         print_changelog_rec((struct llog_changelog_rec *)
 663                                             recs[i]);
 664                         break;
 665                 case CHANGELOG_USER_REC:
 666                         printf("changelog_user record id:0x%x\n",
 667                                __le32_to_cpu(recs[i]->lrh_id));
 668                         break;
 669                 default:
 670                         printf("unknown type %x\n", lopt);
 671                         break;
 672                 }
 673         }
 674 }
 675
 676 /** @} llog_reader */