ctdb/tests/src/ctdb_takeover_tests.c

   1 /*
   2    Tests for ctdb_takeover.c
   3
   4    Copyright (C) Martin Schwenke 2011
   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 as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "ctdbd_test.c"
  21
  22 /* This is lazy... but it is test code! */
  23 #define CTDB_TEST_MAX_NODES 256
  24 #define CTDB_TEST_MAX_IPS 1024
  25
  26 /* Format of each line is "IP pnn" - the separator has to be at least
  27  * 1 space (not a tab or whatever - a space!).
  28  */
  29 static struct public_ip_list *
  30 read_ctdb_public_ip_list(TALLOC_CTX *ctx)
  31 {
  32         char line[1024];
  33         ctdb_sock_addr addr;
  34         char *t;
  35         int pnn;
  36         struct public_ip_list *last = NULL;
  37
  38         struct public_ip_list *ret = NULL;
  39
  40         while (fgets(line, sizeof(line), stdin) != NULL) {
  41
  42                 if ((t = strchr(line, ' ')) != NULL) {
  43                         /* Make line contain just the address */
  44                         *t = '\0';
  45                         /* Point to PNN or leading whitespace...  */
  46                         t++;
  47                         pnn = (int) strtol(t, (char **) NULL, 10);
  48                 } else {
  49                         /* Assume just an IP address, default to PNN -1 */
  50                         if ((t = strchr(line, '\n')) != NULL) {
  51                                 *t = '\0';
  52                         }
  53                         pnn = -1;
  54                 }
  55
  56                 if (parse_ip(line, NULL, 0, &addr)) {
  57                         if (last == NULL) {
  58                                 last = talloc(ctx, struct public_ip_list);
  59                         } else {
  60                                 last->next = talloc(ctx, struct public_ip_list);
  61                                 last = last->next;
  62                         }
  63                         last->next = NULL;
  64                         last->pnn = pnn;
  65                         memcpy(&(last->addr), &addr, sizeof(addr));
  66                         if (ret == NULL) {
  67                                 ret = last;
  68                         }
  69                 } else {
  70                         DEBUG(DEBUG_ERR, (__location__ " ERROR, bad address :%s\n", line));
  71                 }
  72         }
  73
  74         return ret;
  75 }
  76
  77 static void print_ctdb_public_ip_list(struct public_ip_list * ips)
  78 {
  79         while (ips) {
  80                 printf("%s %d\n", ctdb_addr_to_str(&(ips->addr)), ips->pnn);
  81                 ips = ips->next;
  82         }
  83 }
  84
  85 /* Read some IPs from stdin, 1 per line, parse them and then print
  86  * them back out. */
  87 static void ctdb_test_read_ctdb_public_ip_list(void)
  88 {
  89         struct public_ip_list *l;
  90
  91         TALLOC_CTX *tmp_ctx = talloc_new(NULL);
  92
  93         l = read_ctdb_public_ip_list(tmp_ctx);
  94
  95         print_ctdb_public_ip_list(l);
  96
  97         talloc_free(tmp_ctx);
  98 }
  99
 100 /* Format of each line is "IP CURRENT_PNN ALLOWED_PNN,...".
 101  */
 102 static bool
 103 read_ctdb_public_ip_info(TALLOC_CTX *ctx,
 104                          int numnodes,
 105                          struct public_ip_list ** all_ips,
 106                          struct ctdb_public_ip_list_old *** avail)
 107 {
 108         char line[1024];
 109         ctdb_sock_addr addr;
 110         char *t, *tok;
 111         struct public_ip_list * ta;
 112         int pnn, numips, curr, n, i;
 113         struct ctdb_public_ip_list_old * a;
 114
 115         struct public_ip_list *last = NULL;
 116
 117         *avail = talloc_array_size(ctx, sizeof(struct ctdb_public_ip_list_old *),
 118                                    CTDB_TEST_MAX_NODES);
 119         memset(*avail, 0,
 120                sizeof(struct ctdb_public_ip_list_old *) * CTDB_TEST_MAX_NODES);
 121
 122         numips = 0;
 123         *all_ips = NULL;
 124         while (fgets(line, sizeof(line), stdin) != NULL) {
 125
 126                 /* Get rid of pesky newline */
 127                 if ((t = strchr(line, '\n')) != NULL) {
 128                         *t = '\0';
 129                 }
 130
 131                 /* Exit on an empty line */
 132                 if (line[0] == '\0') {
 133                         break;
 134                 }
 135
 136                 /* Get the IP address */
 137                 tok = strtok(line, " \t");
 138                 if (tok == NULL) {
 139                         DEBUG(DEBUG_ERR, (__location__ " WARNING, bad line ignored :%s\n", line));
 140                         continue;
 141                 }
 142
 143                 if (!parse_ip(tok, NULL, 0, &addr)) {
 144                         DEBUG(DEBUG_ERR, (__location__ " ERROR, bad address :%s\n", tok));
 145                         continue;
 146                 }
 147
 148                 numips++;
 149                 if (numips > CTDB_TEST_MAX_IPS) {
 150                         DEBUG(DEBUG_ERR, ("ERROR: Exceeding CTDB_TEST_MAX_IPS: %d\n", CTDB_TEST_MAX_IPS));
 151                         exit(1);
 152                 }
 153
 154                 /* Get the PNN */
 155                 pnn = -1;
 156                 tok = strtok(NULL, " \t");
 157                 if (tok != NULL) {
 158                         pnn = (int) strtol(tok, (char **) NULL, 10);
 159                 }
 160
 161                 /* Add address + pnn to all_ips */
 162                 if (last == NULL) {
 163                         last = talloc(ctx, struct public_ip_list);
 164                 } else {
 165                         last->next = talloc(ctx, struct public_ip_list);
 166                         last = last->next;
 167                 }
 168                 last->next = NULL;
 169                 last->pnn = pnn;
 170                 memcpy(&(last->addr), &addr, sizeof(addr));
 171                 if (*all_ips == NULL) {
 172                         *all_ips = last;
 173                 }
 174
 175                 tok = strtok(NULL, " \t#");
 176                 if (tok == NULL) {
 177                         continue;
 178                 }
 179
 180                 /* Handle allowed nodes for addr */
 181                 t = strtok(tok, ",");
 182                 while (t != NULL) {
 183                         n = (int) strtol(t, (char **) NULL, 10);
 184                         if ((*avail)[n] == NULL) {
 185                                 (*avail)[n] = talloc_array(ctx, struct ctdb_public_ip_list_old, CTDB_TEST_MAX_IPS);
 186                                 (*avail)[n]->num = 0;
 187                         }
 188                         curr = (*avail)[n]->num;
 189                         (*avail)[n]->ips[curr].pnn = pnn;
 190                         memcpy(&((*avail)[n]->ips[curr].addr),
 191                                &addr, sizeof(addr));
 192                         (*avail)[n]->num++;
 193                         t = strtok(NULL, ",");
 194                 }
 195
 196         }
 197
 198         /* Build list of all allowed IPs */
 199         a = talloc_array(ctx, struct ctdb_public_ip_list_old, CTDB_TEST_MAX_IPS);
 200         a->num = numips;
 201         for (ta = *all_ips, i=0; ta != NULL && i < numips ; ta = ta->next, i++) {
 202                 a->ips[i].pnn = ta->pnn;
 203                 memcpy(&(a->ips[i].addr), &(ta->addr), sizeof(ta->addr));
 204         }
 205
 206         /* Assign it to any nodes that don't have a list assigned */
 207         for (n = 0; n < numnodes; n++) {
 208                 if ((*avail)[n] == NULL) {
 209                         (*avail)[n] = a;
 210                 }
 211         }
 212
 213         return true;
 214 }
 215
 216 static void print_ctdb_available_ips(int numnodes,
 217                                      struct ctdb_public_ip_list_old **avail)
 218 {
 219         int n, i;
 220
 221         for (n = 0; n < numnodes; n++) {
 222                 if ((avail[n] != NULL) && (avail[n]->num > 0)) {
 223                         printf("%d:", n);
 224                         for (i = 0; i < avail[n]->num; i++) {
 225                                 printf("%s%s",
 226                                        (i == 0) ? " " : ", ",
 227                                        ctdb_addr_to_str(&(avail[n]->ips[i].addr)));
 228                         }
 229                         printf("\n");
 230                 }
 231         }
 232 }
 233
 234 static void ctdb_test_read_ctdb_public_ip_info(const char nodestates[])
 235 {
 236         int numnodes;
 237         struct public_ip_list *l;
 238         struct ctdb_public_ip_list_old **avail;
 239         char *tok, *ns;
 240
 241         TALLOC_CTX *tmp_ctx = talloc_new(NULL);
 242
 243         /* Avoid that const */
 244         ns = talloc_strdup(tmp_ctx, nodestates);
 245
 246         numnodes = 0;
 247         tok = strtok(ns, ",");
 248         while (tok != NULL) {
 249                 numnodes++;
 250                 if (numnodes > CTDB_TEST_MAX_NODES) {
 251                         DEBUG(DEBUG_ERR, ("ERROR: Exceeding CTDB_TEST_MAX_NODES: %d\n", CTDB_TEST_MAX_NODES));
 252                         exit(1);
 253                 }
 254                 tok = strtok(NULL, ",");
 255         }
 256
 257         read_ctdb_public_ip_info(tmp_ctx, numnodes, &l, &avail);
 258
 259         print_ctdb_public_ip_list(l);
 260         print_ctdb_available_ips(numnodes, avail);
 261
 262         talloc_free(tmp_ctx);
 263 }
 264
 265 /* Read 2 IPs from stdin, calculate the IP distance and print it. */
 266 static void ctdb_test_ip_distance(void)
 267 {
 268         struct public_ip_list *l;
 269         uint32_t distance;
 270
 271         TALLOC_CTX *tmp_ctx = talloc_new(NULL);
 272
 273         l = read_ctdb_public_ip_list(tmp_ctx);
 274
 275         if (l && l->next) {
 276                 distance = ip_distance(&(l->addr), &(l->next->addr));
 277                 printf ("%lu\n", (unsigned long) distance);
 278         }
 279
 280         talloc_free(tmp_ctx);
 281 }
 282
 283 /* Read some IPs from stdin, calculate the sum of the squares of the
 284  * IP distances between the 1st argument and those read that are on
 285  * the given node. The given IP must one of the ones in the list.  */
 286 static void ctdb_test_ip_distance_2_sum(const char ip[], int pnn)
 287 {
 288         struct public_ip_list *l;
 289         struct public_ip_list *t;
 290         ctdb_sock_addr addr;
 291         uint32_t distance;
 292
 293         TALLOC_CTX *tmp_ctx = talloc_new(NULL);
 294
 295
 296         l = read_ctdb_public_ip_list(tmp_ctx);
 297
 298         if (l && parse_ip(ip, NULL, 0, &addr)) {
 299                 /* find the entry for the specified IP */
 300                 for (t=l; t!=NULL; t=t->next) {
 301                         if (ctdb_same_ip(&(t->addr), &addr)) {
 302                                 break;
 303                         }
 304                 }
 305
 306                 if (t == NULL) {
 307                         fprintf(stderr, "IP NOT PRESENT IN LIST");
 308                         exit(1);
 309                 }
 310
 311                 distance = ip_distance_2_sum(&(t->addr), l, pnn);
 312                 printf ("%lu\n", (unsigned long) distance);
 313         } else {
 314                 fprintf(stderr, "BAD INPUT");
 315                 exit(1);
 316         }
 317
 318         talloc_free(tmp_ctx);
 319 }
 320
 321 /* Read some IPs from stdin, calculate the sume of the squares of the
 322  * IP distances between the first and the rest, and print it. */
 323 static void ctdb_test_lcp2_imbalance(int pnn)
 324 {
 325         struct public_ip_list *l;
 326         uint32_t imbalance;
 327
 328         TALLOC_CTX *tmp_ctx = talloc_new(NULL);
 329
 330         l = read_ctdb_public_ip_list(tmp_ctx);
 331
 332         imbalance = lcp2_imbalance(l, pnn);
 333         printf ("%lu\n", (unsigned long) imbalance);
 334
 335         talloc_free(tmp_ctx);
 336 }
 337
 338 static uint32_t *get_tunable_values(TALLOC_CTX *tmp_ctx,
 339                                     int numnodes,
 340                                     const char *tunable)
 341 {
 342         int i;
 343         char *tok;
 344         uint32_t *tvals = talloc_zero_array(tmp_ctx, uint32_t, numnodes);
 345         char *t = getenv(tunable);
 346
 347         if (t) {
 348                 if (strcmp(t, "1") == 0) {
 349                         for (i=0; i<numnodes; i++) {
 350                                 tvals[i] = 1;
 351                         }
 352                 } else {
 353                         tok = strtok(t, ",");
 354                         i = 0;
 355                         while (tok != NULL) {
 356                                 tvals[i] =
 357                                         (uint32_t) strtol(tok, NULL, 0);
 358                                 i++;
 359                                 tok = strtok(NULL, ",");
 360                         }
 361                         if (i != numnodes) {
 362                                 fprintf(stderr, "ERROR: Wrong number of values in %s\n", tunable);
 363                                 exit(1);
 364                         }
 365                 }
 366         }
 367
 368         return tvals;
 369 }
 370
 371 static enum ctdb_runstate *get_runstate(TALLOC_CTX *tmp_ctx,
 372                                         int numnodes)
 373 {
 374         int i;
 375         uint32_t *tvals;
 376         enum ctdb_runstate *runstate =
 377                 talloc_zero_array(tmp_ctx, enum ctdb_runstate, numnodes);
 378         char *t = getenv("CTDB_TEST_RUNSTATE");
 379
 380         if (t == NULL) {
 381                 for (i=0; i<numnodes; i++) {
 382                         runstate[i] = CTDB_RUNSTATE_RUNNING;
 383                 }
 384         } else {
 385                 tvals = get_tunable_values(tmp_ctx, numnodes, "CTDB_TEST_RUNSTATE");
 386                 for (i=0; i<numnodes; i++) {
 387                         runstate[i] = (enum ctdb_runstate) tvals[i];
 388                 }
 389                 talloc_free(tvals);
 390         }
 391
 392         return runstate;
 393 }
 394
 395 /* Fake up enough CTDB state to be able to run the IP allocation
 396  * algorithm.  Usually this sets up some standard state, sets the node
 397  * states from the command-line and reads the current IP layout from
 398  * stdin.
 399  *
 400  * However, if read_ips_for_multiple_nodes is true then each node's
 401  * idea of the IP layout is read separately from stdin.  In this mode
 402  * is doesn't make much sense to use read_ctdb_public_ip_info's
 403  * optional ALLOWED_PNN,... list in the input, since each node is
 404  * being handled separately anyway.  IPs for each node are separated
 405  * by a blank line.  This mode is for testing weird behaviours where
 406  * the IP layouts differs across nodes and we want to improve
 407  * create_merged_ip_list(), so should only be used in tests of
 408  * ctdb_takeover_run_core().  Yes, it is a hack...  :-)
 409  */
 410 static void ctdb_test_init(const char nodestates[],
 411                            struct ctdb_context **ctdb,
 412                            struct public_ip_list **all_ips,
 413                            struct ctdb_ipflags **ipflags,
 414                            bool read_ips_for_multiple_nodes)
 415 {
 416         struct ctdb_public_ip_list_old **avail;
 417         int i, numnodes;
 418         uint32_t nodeflags[CTDB_TEST_MAX_NODES];
 419         char *tok, *ns, *t;
 420         struct ctdb_node_map_old *nodemap;
 421         uint32_t *tval_noiptakeover;
 422         uint32_t *tval_noiptakeoverondisabled;
 423         enum ctdb_runstate *runstate;
 424
 425         *ctdb = talloc_zero(NULL, struct ctdb_context);
 426
 427         /* Avoid that const */
 428         ns = talloc_strdup(*ctdb, nodestates);
 429
 430         numnodes = 0;
 431         tok = strtok(ns, ",");
 432         while (tok != NULL) {
 433                 nodeflags[numnodes] = (uint32_t) strtol(tok, NULL, 0);
 434                 numnodes++;
 435                 if (numnodes >= CTDB_TEST_MAX_NODES) {
 436                         DEBUG(DEBUG_ERR, ("ERROR: Exceeding CTDB_TEST_MAX_NODES: %d\n", CTDB_TEST_MAX_NODES));
 437                         exit(1);
 438                 }
 439                 tok = strtok(NULL, ",");
 440         }
 441
 442         /* Fake things up... */
 443         (*ctdb)->num_nodes = numnodes;
 444
 445         /* Default to LCP2 */
 446         (*ctdb)->tunable.lcp2_public_ip_assignment = 1;
 447         (*ctdb)->tunable.deterministic_public_ips = 0;
 448         (*ctdb)->tunable.disable_ip_failover = 0;
 449         (*ctdb)->tunable.no_ip_failback = 0;
 450
 451         if ((t = getenv("CTDB_IP_ALGORITHM"))) {
 452                 if (strcmp(t, "lcp2") == 0) {
 453                         (*ctdb)->tunable.lcp2_public_ip_assignment = 1;
 454                 } else if (strcmp(t, "nondet") == 0) {
 455                         (*ctdb)->tunable.lcp2_public_ip_assignment = 0;
 456                 } else if (strcmp(t, "det") == 0) {
 457                         (*ctdb)->tunable.lcp2_public_ip_assignment = 0;
 458                         (*ctdb)->tunable.deterministic_public_ips = 1;
 459                 } else {
 460                         fprintf(stderr, "ERROR: unknown IP algorithm %s\n", t);
 461                         exit(1);
 462                 }
 463         }
 464
 465         tval_noiptakeover = get_tunable_values(*ctdb, numnodes,
 466                                                "CTDB_SET_NoIPTakeover");
 467         tval_noiptakeoverondisabled =
 468                 get_tunable_values(*ctdb, numnodes,
 469                                    "CTDB_SET_NoIPHostOnAllDisabled");
 470
 471         runstate = get_runstate(*ctdb, numnodes);
 472
 473         nodemap =  talloc_array(*ctdb, struct ctdb_node_map_old, numnodes);
 474         nodemap->num = numnodes;
 475
 476         if (!read_ips_for_multiple_nodes) {
 477                 read_ctdb_public_ip_info(*ctdb, numnodes, all_ips, &avail);
 478         }
 479
 480         (*ctdb)->nodes = talloc_array(*ctdb, struct ctdb_node *, numnodes); // FIXME: bogus size, overkill
 481
 482         for (i=0; i < numnodes; i++) {
 483                 nodemap->nodes[i].pnn = i;
 484                 nodemap->nodes[i].flags = nodeflags[i];
 485                 /* nodemap->nodes[i].sockaddr is uninitialised */
 486
 487                 if (read_ips_for_multiple_nodes) {
 488                         read_ctdb_public_ip_info(*ctdb, numnodes,
 489                                                  all_ips, &avail);
 490                 }
 491
 492                 (*ctdb)->nodes[i] = talloc(*ctdb, struct ctdb_node);
 493                 (*ctdb)->nodes[i]->pnn = i;
 494                 (*ctdb)->nodes[i]->flags = nodeflags[i];
 495                 (*ctdb)->nodes[i]->available_public_ips = avail[i];
 496                 (*ctdb)->nodes[i]->known_public_ips = avail[i];
 497         }
 498
 499         *ipflags = set_ipflags_internal(*ctdb, *ctdb, nodemap,
 500                                         tval_noiptakeover,
 501                                         tval_noiptakeoverondisabled,
 502                                         runstate);
 503 }
 504
 505 /* IP layout is read from stdin. */
 506 static void ctdb_test_lcp2_allocate_unassigned(const char nodestates[])
 507 {
 508         struct ctdb_context *ctdb;
 509         struct public_ip_list *all_ips;
 510         struct ctdb_ipflags *ipflags;
 511
 512         uint32_t *lcp2_imbalances;
 513         bool *newly_healthy;
 514
 515         ctdb_test_init(nodestates, &ctdb, &all_ips, &ipflags, false);
 516
 517         lcp2_init(ctdb, ipflags, all_ips, NULL,
 518                   &lcp2_imbalances, &newly_healthy);
 519
 520         lcp2_allocate_unassigned(ctdb, ipflags,
 521                                  all_ips, lcp2_imbalances);
 522
 523         print_ctdb_public_ip_list(all_ips);
 524
 525         talloc_free(ctdb);
 526 }
 527
 528 /* IP layout is read from stdin. */
 529 static void ctdb_test_lcp2_failback(const char nodestates[])
 530 {
 531         struct ctdb_context *ctdb;
 532         struct public_ip_list *all_ips;
 533         struct ctdb_ipflags *ipflags;
 534
 535         uint32_t *lcp2_imbalances;
 536         bool *newly_healthy;
 537
 538         ctdb_test_init(nodestates, &ctdb, &all_ips, &ipflags, false);
 539
 540         lcp2_init(ctdb, ipflags, all_ips, NULL,
 541                   &lcp2_imbalances, &newly_healthy);
 542
 543         lcp2_failback(ctdb, ipflags,
 544                       all_ips, lcp2_imbalances, newly_healthy);
 545
 546         print_ctdb_public_ip_list(all_ips);
 547
 548         talloc_free(ctdb);
 549 }
 550
 551 /* IP layout is read from stdin. */
 552 static void ctdb_test_lcp2_failback_loop(const char nodestates[])
 553 {
 554         struct ctdb_context *ctdb;
 555         struct public_ip_list *all_ips;
 556         struct ctdb_ipflags *ipflags;
 557
 558         uint32_t *lcp2_imbalances;
 559         bool *newly_healthy;
 560
 561         ctdb_test_init(nodestates, &ctdb, &all_ips, &ipflags, false);
 562
 563         lcp2_init(ctdb, ipflags, all_ips, NULL,
 564                   &lcp2_imbalances, &newly_healthy);
 565
 566         lcp2_failback(ctdb, ipflags,
 567                       all_ips, lcp2_imbalances, newly_healthy);
 568
 569         print_ctdb_public_ip_list(all_ips);
 570
 571         talloc_free(ctdb);
 572 }
 573
 574 /* IP layout is read from stdin.  See comment for ctdb_test_init() for
 575  * explanation of read_ips_for_multiple_nodes.
 576  */
 577 static void ctdb_test_ctdb_takeover_run_core(const char nodestates[],
 578                                              bool read_ips_for_multiple_nodes)
 579 {
 580         struct ctdb_context *ctdb;
 581         struct public_ip_list *all_ips;
 582         struct ctdb_ipflags *ipflags;
 583
 584         ctdb_test_init(nodestates, &ctdb, &all_ips, &ipflags,
 585                        read_ips_for_multiple_nodes);
 586
 587         ctdb_takeover_run_core(ctdb, ipflags, &all_ips, NULL);
 588
 589         print_ctdb_public_ip_list(all_ips);
 590
 591         talloc_free(ctdb);
 592 }
 593
 594 static void usage(void)
 595 {
 596         fprintf(stderr, "usage: ctdb_takeover_tests <op>\n");
 597         exit(1);
 598 }
 599
 600 int main(int argc, const char *argv[])
 601 {
 602         DEBUGLEVEL = DEBUG_DEBUG;
 603         if (getenv("CTDB_TEST_LOGLEVEL")) {
 604                 DEBUGLEVEL = atoi(getenv("CTDB_TEST_LOGLEVEL"));
 605         }
 606
 607         if (argc < 2) {
 608                 usage();
 609         }
 610
 611         if (strcmp(argv[1], "ip_list") == 0) {
 612                 ctdb_test_read_ctdb_public_ip_list();
 613         } else if (argc == 3 && strcmp(argv[1], "ip_info") == 0) {
 614                 ctdb_test_read_ctdb_public_ip_info(argv[2]);
 615         } else if (strcmp(argv[1], "ip_distance") == 0) {
 616                 ctdb_test_ip_distance();
 617         } else if (argc == 4 && strcmp(argv[1], "ip_distance_2_sum") == 0) {
 618                 ctdb_test_ip_distance_2_sum(argv[2], atoi(argv[3]));
 619         } else if (argc >= 3 && strcmp(argv[1], "lcp2_imbalance") == 0) {
 620                 ctdb_test_lcp2_imbalance(atoi(argv[2]));
 621         } else if (argc == 3 && strcmp(argv[1], "lcp2_allocate_unassigned") == 0) {
 622                 ctdb_test_lcp2_allocate_unassigned(argv[2]);
 623         } else if (argc == 3 && strcmp(argv[1], "lcp2_failback") == 0) {
 624                 ctdb_test_lcp2_failback(argv[2]);
 625         } else if (argc == 3 && strcmp(argv[1], "lcp2_failback_loop") == 0) {
 626                 ctdb_test_lcp2_failback_loop(argv[2]);
 627         } else if (argc == 3 &&
 628                    strcmp(argv[1], "ctdb_takeover_run_core") == 0) {
 629                 ctdb_test_ctdb_takeover_run_core(argv[2], false);
 630         } else if (argc == 4 &&
 631                    strcmp(argv[1], "ctdb_takeover_run_core") == 0 &&
 632                    strcmp(argv[3], "multi") == 0) {
 633                 ctdb_test_ctdb_takeover_run_core(argv[2], true);
 634         } else {
 635                 usage();
 636         }
 637
 638         return 0;
 639 }