lustre/utils/llog_reader.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36  /* Interpret configuration llogs */
  37
  38
  39 #include <stdio.h>
  40 #include <sys/types.h>
  41 #include <sys/stat.h>
  42 #include <fcntl.h>
  43
  44 #include <time.h>
  45 #include <liblustre.h>
  46 #include <lustre/lustre_idl.h>
  47
  48 int llog_pack_buffer(int fd, struct llog_log_hdr **llog_buf,
  49                      struct llog_rec_hdr ***recs, int *recs_number);
  50
  51 void print_llog_header(struct llog_log_hdr *llog_buf);
  52 void print_records(struct llog_rec_hdr **recs_buf,int rec_number);
  53 void llog_unpack_buffer(int fd, struct llog_log_hdr *llog_buf,
  54                         struct llog_rec_hdr **recs_buf);
  55
  56 #define CANCELLED 0x678
  57
  58 #define PTL_CMD_BASE 100
  59 char* portals_command[17]=
  60 {
  61         "REGISTER_PEER_FD",
  62         "CLOSE_CONNECTION",
  63         "REGISTER_MYNID",
  64         "PUSH_CONNECTION",
  65         "GET_CONN",
  66         "DEL_PEER",
  67         "ADD_PEER",
  68         "GET_PEER",
  69         "GET_TXDESC",
  70         "ADD_ROUTE",
  71         "DEL_ROUTE",
  72         "GET_ROUTE",
  73         "NOTIFY_ROUTER",
  74         "ADD_INTERFACE",
  75         "DEL_INTERFACE",
  76         "GET_INTERFACE",
  77         ""
  78 };
  79
  80 int main(int argc, char **argv)
  81 {
  82         int rc = 0;
  83         int fd, rec_number;
  84         struct llog_log_hdr *llog_buf = NULL;
  85         struct llog_rec_hdr **recs_buf = NULL;
  86
  87         setlinebuf(stdout);
  88
  89         if(argc != 2 ){
  90                 printf("Usage: llog_reader filename\n");
  91                 return -1;
  92         }
  93
  94         fd = open(argv[1],O_RDONLY);
  95         if (fd < 0){
  96                 printf("Could not open the file %s\n", argv[1]);
  97                 goto out;
  98         }
  99         rc = llog_pack_buffer(fd, &llog_buf, &recs_buf, &rec_number);
 100         if (rc < 0) {
 101                 printf("Could not pack buffer; rc=%d\n", rc);
 102                 goto out_fd;
 103         }
 104
 105         print_llog_header(llog_buf);
 106         print_records(recs_buf,rec_number);
 107         llog_unpack_buffer(fd,llog_buf,recs_buf);
 108 out_fd:
 109         close(fd);
 110 out:
 111         return rc;
 112 }
 113
 114
 115
 116 int llog_pack_buffer(int fd, struct llog_log_hdr **llog,
 117                      struct llog_rec_hdr ***recs,
 118                      int *recs_number)
 119 {
 120         int rc = 0, recs_num,rd;
 121         off_t file_size;
 122         struct stat st;
 123         char *file_buf=NULL, *recs_buf=NULL;
 124         struct llog_rec_hdr **recs_pr=NULL;
 125         char *ptr=NULL;
 126         int i;
 127
 128         rc = fstat(fd,&st);
 129         if (rc < 0){
 130                 printf("Get file stat error.\n");
 131                 goto out;
 132         }
 133         file_size = st.st_size;
 134
 135         file_buf = malloc(file_size);
 136         if (file_buf == NULL){
 137                 printf("Memory Alloc for file_buf error.\n");
 138                 rc = -ENOMEM;
 139                 goto out;
 140         }
 141         *llog = (struct llog_log_hdr*)file_buf;
 142
 143         rd = read(fd,file_buf,file_size);
 144         if (rd < file_size){
 145                 printf("Read file error.\n");
 146                 rc = -EIO; /*FIXME*/
 147                 goto clear_file_buf;
 148         }
 149
 150         /* the llog header not countable here.*/
 151         recs_num = le32_to_cpu((*llog)->llh_count)-1;
 152
 153         recs_buf = malloc(recs_num * sizeof(struct llog_rec_hdr *));
 154         if (recs_buf == NULL){
 155                 printf("Memory Alloc for recs_buf error.\n");
 156                 rc = -ENOMEM;
 157                 goto clear_file_buf;
 158         }
 159         recs_pr = (struct llog_rec_hdr **)recs_buf;
 160
 161         ptr = file_buf + le32_to_cpu((*llog)->llh_hdr.lrh_len);
 162         i = 0;
 163
 164         while (i < recs_num){
 165                 struct llog_rec_hdr *cur_rec = (struct llog_rec_hdr*)ptr;
 166                 int idx = le32_to_cpu(cur_rec->lrh_index);
 167                 recs_pr[i] = cur_rec;
 168
 169                 if (ext2_test_bit(idx, (*llog)->llh_bitmap)) {
 170                         if (le32_to_cpu(cur_rec->lrh_type) != OBD_CFG_REC)
 171                                 printf("rec #%d type=%x len=%u\n", idx,
 172                                        cur_rec->lrh_type, cur_rec->lrh_len);
 173                 } else {
 174                         printf("Bit %d of %d not set\n", idx, recs_num);
 175                         cur_rec->padding = CANCELLED;
 176                         /* The header counts only set records */
 177                         i--;
 178                 }
 179
 180                 ptr += le32_to_cpu(cur_rec->lrh_len);
 181                 if ((ptr - file_buf) > file_size) {
 182                         printf("The log is corrupt (too big at %d)\n", i);
 183                         rc = -EINVAL;
 184                         goto clear_recs_buf;
 185                 }
 186                 i++;
 187         }
 188
 189         *recs = recs_pr;
 190         *recs_number = recs_num;
 191
 192 out:
 193         return rc;
 194
 195 clear_recs_buf:
 196         free(recs_buf);
 197
 198 clear_file_buf:
 199         free(file_buf);
 200
 201         *llog=NULL;
 202         goto out;
 203 }
 204
 205 void llog_unpack_buffer(int fd, struct llog_log_hdr *llog_buf,
 206                         struct llog_rec_hdr **recs_buf)
 207 {
 208         free(llog_buf);
 209         free(recs_buf);
 210         return;
 211 }
 212
 213 void print_llog_header(struct llog_log_hdr *llog_buf)
 214 {
 215         time_t t;
 216
 217         printf("Header size : %u\n",
 218                 le32_to_cpu(llog_buf->llh_hdr.lrh_len));
 219
 220         t = le64_to_cpu(llog_buf->llh_timestamp);
 221         printf("Time : %s", ctime(&t));
 222
 223         printf("Number of records: %u\n",
 224                le32_to_cpu(llog_buf->llh_count)-1);
 225
 226         printf("Target uuid : %s \n",
 227                (char *)(&llog_buf->llh_tgtuuid));
 228
 229         /* Add the other info you want to view here */
 230
 231         printf("-----------------------\n");
 232         return;
 233 }
 234
 235 static void print_1_cfg(struct lustre_cfg *lcfg)
 236 {
 237         int i;
 238
 239         if (lcfg->lcfg_nid)
 240                 printf("nid=%s("LPX64")  ", libcfs_nid2str(lcfg->lcfg_nid),
 241                        (__u64)lcfg->lcfg_nid);
 242         if (lcfg->lcfg_nal)
 243                 printf("nal=%d ", lcfg->lcfg_nal);
 244         for (i = 0; i <  lcfg->lcfg_bufcount; i++)
 245                 printf("%d:%.*s  ", i, lcfg->lcfg_buflens[i],
 246                        (char*)lustre_cfg_buf(lcfg, i));
 247         return;
 248 }
 249
 250
 251 static void print_setup_cfg(struct lustre_cfg *lcfg)
 252 {
 253         struct lov_desc *desc;
 254
 255         if ((lcfg->lcfg_bufcount == 2) &&
 256             (lcfg->lcfg_buflens[1] == sizeof(*desc))) {
 257                 printf("lov_setup ");
 258                 printf("0:%s  ", lustre_cfg_string(lcfg, 0));
 259                 printf("1:(struct lov_desc)\n");
 260                 desc = (struct lov_desc*)(lustre_cfg_string(lcfg, 1));
 261                 printf("\t\tuuid=%s  ", (char*)desc->ld_uuid.uuid);
 262                 printf("stripe:cnt=%u ", desc->ld_default_stripe_count);
 263                 printf("size="LPU64" ", desc->ld_default_stripe_size);
 264                 printf("offset="LPU64" ", desc->ld_default_stripe_offset);
 265                 printf("pattern=%#x", desc->ld_pattern);
 266         } else {
 267                 printf("setup     ");
 268                 print_1_cfg(lcfg);
 269         }
 270         return;
 271 }
 272
 273 void print_lustre_cfg(struct lustre_cfg *lcfg, int *skip)
 274 {
 275         enum lcfg_command_type cmd = le32_to_cpu(lcfg->lcfg_command);
 276
 277         if (*skip > 0)
 278                 printf("SKIP ");
 279
 280         switch(cmd){
 281         case(LCFG_ATTACH):{
 282                 printf("attach    ");
 283                 print_1_cfg(lcfg);
 284                 break;
 285         }
 286         case(LCFG_SETUP):{
 287                 print_setup_cfg(lcfg);
 288                 break;
 289         }
 290         case(LCFG_DETACH):{
 291                 printf("detach    ");
 292                 print_1_cfg(lcfg);
 293                 break;
 294         }
 295         case(LCFG_CLEANUP):{
 296                 printf("cleanup   ");
 297                 print_1_cfg(lcfg);
 298                 break;
 299         }
 300         case(LCFG_ADD_UUID):{
 301                 printf("add_uuid  ");
 302                 print_1_cfg(lcfg);
 303                 break;
 304         }
 305         case(LCFG_DEL_UUID):{
 306                 printf("del_uuid  ");
 307                 print_1_cfg(lcfg);
 308                 break;
 309         }
 310         case(LCFG_ADD_CONN):{
 311                 printf("add_conn  ");
 312                 print_1_cfg(lcfg);
 313                 break;
 314         }
 315         case(LCFG_DEL_CONN):{
 316                 printf("del_conn  ");
 317                 print_1_cfg(lcfg);
 318                 break;
 319         }
 320         case(LCFG_LOV_ADD_OBD):{
 321                 printf("lov_modify_tgts add ");
 322                 print_1_cfg(lcfg);
 323                 break;
 324         }
 325         case(LCFG_LOV_DEL_OBD):{
 326                 printf("lov_modify_tgts del ");
 327                 print_1_cfg(lcfg);
 328                 break;
 329         }
 330         case(LCFG_MOUNTOPT):{
 331                 printf("mount_option ");
 332                 print_1_cfg(lcfg);
 333                 break;
 334         }
 335         case(LCFG_DEL_MOUNTOPT):{
 336                 printf("del_mount_option ");
 337                 print_1_cfg(lcfg);
 338                 break;
 339         }
 340         case(LCFG_SET_TIMEOUT):{
 341                 printf("set_timeout=%d ", lcfg->lcfg_num);
 342                 break;
 343         }
 344         case(LCFG_SET_LDLM_TIMEOUT):{
 345                 printf("set_ldlm_timeout=%d ", lcfg->lcfg_num);
 346                 break;
 347         }
 348         case(LCFG_SET_UPCALL):{
 349                 printf("set_lustre_upcall ");
 350                 print_1_cfg(lcfg);
 351                 break;
 352         }
 353         case(LCFG_PARAM):{
 354                 printf("param ");
 355                 print_1_cfg(lcfg);
 356                 break;
 357         }
 358         case(LCFG_MARKER):{
 359                 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
 360                 char createtime[26], canceltime[26] = "";
 361                 time_t time_tmp;
 362
 363                 if (marker->cm_flags & CM_SKIP) {
 364                         if (marker->cm_flags & CM_START) {
 365                                 printf("SKIP START ");
 366                                 (*skip)++;
 367                         } else {
 368                                 printf(     "END   ");
 369                                 *skip = 0;
 370                         }
 371                 }
 372
 373                 if (marker->cm_flags & CM_EXCLUDE) {
 374                         if (marker->cm_flags & CM_START)
 375                                 printf("EXCLUDE START ");
 376                         else
 377                                 printf("EXCLUDE END   ");
 378                 }
 379
 380                 /* Handle overflow of 32-bit time_t gracefully.
 381                  * The copy to time_tmp is needed in any case to
 382                  * keep the pointer happy, even on 64-bit systems. */
 383                 time_tmp = marker->cm_createtime;
 384                 if (time_tmp == marker->cm_createtime) {
 385                         ctime_r(&time_tmp, createtime);
 386                         createtime[strlen(createtime) - 1] = 0;
 387                 } else {
 388                         strcpy(createtime, "in the distant future");
 389                 }
 390
 391                 if (marker->cm_canceltime) {
 392                         /* Like cm_createtime, we try to handle overflow of
 393                          * 32-bit time_t gracefully. The copy to time_tmp
 394                          * is also needed on 64-bit systems to keep the
 395                          * pointer happy, see bug 16771 */
 396                         time_tmp = marker->cm_canceltime;
 397                         if (time_tmp == marker->cm_canceltime) {
 398                                 ctime_r(&time_tmp, canceltime);
 399                                 canceltime[strlen(canceltime) - 1] = 0;
 400                         } else {
 401                                 strcpy(canceltime, "in the distant future");
 402                         }
 403                 }
 404
 405                 printf("marker %3d (flags=%#04x, v%d.%d.%d.%d) %-15s '%s' %s-%s",
 406                        marker->cm_step, marker->cm_flags,
 407                        OBD_OCD_VERSION_MAJOR(marker->cm_vers),
 408                        OBD_OCD_VERSION_MINOR(marker->cm_vers),
 409                        OBD_OCD_VERSION_PATCH(marker->cm_vers),
 410                        OBD_OCD_VERSION_FIX(marker->cm_vers),
 411                        marker->cm_tgtname, marker->cm_comment,
 412                        createtime, canceltime);
 413                 break;
 414         }
 415         case(LCFG_POOL_NEW):{
 416                 printf("pool new ");
 417                 print_1_cfg(lcfg);
 418                 break;
 419         }
 420         case(LCFG_POOL_ADD):{
 421                 printf("pool add ");
 422                 print_1_cfg(lcfg);
 423                 break;
 424         }
 425         case(LCFG_POOL_REM):{
 426                 printf("pool remove ");
 427                 print_1_cfg(lcfg);
 428                 break;
 429         }
 430         case(LCFG_POOL_DEL):{
 431                 printf("pool destroy ");
 432                 print_1_cfg(lcfg);
 433                 break;
 434         }
 435         default:
 436                 printf("unsupported cmd_code = %x\n",cmd);
 437         }
 438         printf("\n");
 439         return;
 440 }
 441
 442 void print_records(struct llog_rec_hdr **recs, int rec_number)
 443 {
 444         __u32 lopt;
 445         int i, skip = 0;
 446
 447         for(i = 0; i < rec_number; i++) {
 448                 printf("#%.2d (%.3d)", le32_to_cpu(recs[i]->lrh_index),
 449                        le32_to_cpu(recs[i]->lrh_len));
 450
 451                 lopt = le32_to_cpu(recs[i]->lrh_type);
 452
 453                 if (recs[i]->padding == CANCELLED)
 454                         printf("NOT SET ");
 455
 456                 if (lopt == OBD_CFG_REC) {
 457                         struct lustre_cfg *lcfg;
 458                         lcfg = (struct lustre_cfg *)((char*)(recs[i]) +
 459                                                      sizeof(struct llog_rec_hdr));
 460                         print_lustre_cfg(lcfg, &skip);
 461                 } else if (lopt == LLOG_PAD_MAGIC) {
 462                         printf("padding\n");
 463                 } else
 464                         printf("unknown type %x\n", lopt);
 465
 466         }
 467 }