hastctl.c revision 219373
1/*- 2 * Copyright (c) 2009-2010 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Pawel Jakub Dawidek under sponsorship from 6 * the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD: head/sbin/hastctl/hastctl.c 219373 2011-03-07 10:42:28Z pjd $"); 32 33#include <sys/param.h> 34#include <sys/disk.h> 35#include <sys/ioctl.h> 36#include <sys/stat.h> 37#include <sys/sysctl.h> 38 39#include <assert.h> 40#include <err.h> 41#include <errno.h> 42#include <fcntl.h> 43#include <inttypes.h> 44#include <limits.h> 45#include <signal.h> 46#include <stdio.h> 47#include <stdlib.h> 48#include <string.h> 49#include <sysexits.h> 50#include <unistd.h> 51 52#include <activemap.h> 53 54#include "hast.h" 55#include "hast_proto.h" 56#include "metadata.h" 57#include "nv.h" 58#include "pjdlog.h" 59#include "proto.h" 60#include "subr.h" 61 62/* Path to configuration file. */ 63static const char *cfgpath = HAST_CONFIG; 64/* Hastd configuration. */ 65static struct hastd_config *cfg; 66/* Control connection. */ 67static struct proto_conn *controlconn; 68 69enum { 70 CMD_INVALID, 71 CMD_CREATE, 72 CMD_ROLE, 73 CMD_STATUS, 74 CMD_DUMP 75}; 76 77static __dead2 void 78usage(void) 79{ 80 81 fprintf(stderr, 82 "usage: %s create [-d] [-c config] [-e extentsize] [-k keepdirty]\n" 83 "\t\t[-m mediasize] name ...\n", 84 getprogname()); 85 fprintf(stderr, 86 " %s role [-d] [-c config] <init | primary | secondary> all | name ...\n", 87 getprogname()); 88 fprintf(stderr, 89 " %s status [-d] [-c config] [all | name ...]\n", 90 getprogname()); 91 fprintf(stderr, 92 " %s dump [-d] [-c config] [all | name ...]\n", 93 getprogname()); 94 exit(EX_USAGE); 95} 96 97static int 98create_one(struct hast_resource *res, intmax_t mediasize, intmax_t extentsize, 99 intmax_t keepdirty) 100{ 101 unsigned char *buf; 102 size_t mapsize; 103 int ec; 104 105 ec = 0; 106 pjdlog_prefix_set("[%s] ", res->hr_name); 107 108 if (provinfo(res, true) < 0) { 109 ec = EX_NOINPUT; 110 goto end; 111 } 112 if (mediasize == 0) 113 mediasize = res->hr_local_mediasize; 114 else if (mediasize > res->hr_local_mediasize) { 115 pjdlog_error("Provided mediasize is larger than provider %s size.", 116 res->hr_localpath); 117 ec = EX_DATAERR; 118 goto end; 119 } 120 if (!powerof2(res->hr_local_sectorsize)) { 121 pjdlog_error("Sector size of provider %s is not power of 2 (%u).", 122 res->hr_localpath, res->hr_local_sectorsize); 123 ec = EX_DATAERR; 124 goto end; 125 } 126 if (extentsize == 0) 127 extentsize = HAST_EXTENTSIZE; 128 if (extentsize < res->hr_local_sectorsize) { 129 pjdlog_error("Extent size (%jd) is less than sector size (%u).", 130 (intmax_t)extentsize, res->hr_local_sectorsize); 131 ec = EX_DATAERR; 132 goto end; 133 } 134 if ((extentsize % res->hr_local_sectorsize) != 0) { 135 pjdlog_error("Extent size (%jd) is not multiple of sector size (%u).", 136 (intmax_t)extentsize, res->hr_local_sectorsize); 137 ec = EX_DATAERR; 138 goto end; 139 } 140 mapsize = activemap_calc_ondisk_size(mediasize - METADATA_SIZE, 141 extentsize, res->hr_local_sectorsize); 142 if (keepdirty == 0) 143 keepdirty = HAST_KEEPDIRTY; 144 res->hr_datasize = mediasize - METADATA_SIZE - mapsize; 145 res->hr_extentsize = extentsize; 146 res->hr_keepdirty = keepdirty; 147 148 res->hr_localoff = METADATA_SIZE + mapsize; 149 150 if (metadata_write(res) < 0) { 151 ec = EX_IOERR; 152 goto end; 153 } 154 buf = calloc(1, mapsize); 155 if (buf == NULL) { 156 pjdlog_error("Unable to allocate %zu bytes of memory for initial bitmap.", 157 mapsize); 158 ec = EX_TEMPFAIL; 159 goto end; 160 } 161 if (pwrite(res->hr_localfd, buf, mapsize, METADATA_SIZE) != 162 (ssize_t)mapsize) { 163 pjdlog_errno(LOG_ERR, "Unable to store initial bitmap on %s", 164 res->hr_localpath); 165 free(buf); 166 ec = EX_IOERR; 167 goto end; 168 } 169 free(buf); 170end: 171 if (res->hr_localfd >= 0) 172 close(res->hr_localfd); 173 pjdlog_prefix_set("%s", ""); 174 return (ec); 175} 176 177static void 178control_create(int argc, char *argv[], intmax_t mediasize, intmax_t extentsize, 179 intmax_t keepdirty) 180{ 181 struct hast_resource *res; 182 int ec, ii, ret; 183 184 /* Initialize the given resources. */ 185 if (argc < 1) 186 usage(); 187 ec = 0; 188 for (ii = 0; ii < argc; ii++) { 189 TAILQ_FOREACH(res, &cfg->hc_resources, hr_next) { 190 if (strcmp(argv[ii], res->hr_name) == 0) 191 break; 192 } 193 if (res == NULL) { 194 pjdlog_error("Unknown resource %s.", argv[ii]); 195 if (ec == 0) 196 ec = EX_DATAERR; 197 continue; 198 } 199 ret = create_one(res, mediasize, extentsize, keepdirty); 200 if (ret != 0 && ec == 0) 201 ec = ret; 202 } 203 exit(ec); 204} 205 206static int 207dump_one(struct hast_resource *res) 208{ 209 int ret; 210 211 ret = metadata_read(res, false); 212 if (ret != 0) 213 return (ret); 214 215 printf("resource: %s\n", res->hr_name); 216 printf(" datasize: %ju (%NB)\n", (uintmax_t)res->hr_datasize, 217 (intmax_t)res->hr_datasize); 218 printf(" extentsize: %d (%NB)\n", res->hr_extentsize, 219 (intmax_t)res->hr_extentsize); 220 printf(" keepdirty: %d\n", res->hr_keepdirty); 221 printf(" localoff: %ju\n", (uintmax_t)res->hr_localoff); 222 printf(" resuid: %ju\n", (uintmax_t)res->hr_resuid); 223 printf(" localcnt: %ju\n", (uintmax_t)res->hr_primary_localcnt); 224 printf(" remotecnt: %ju\n", (uintmax_t)res->hr_primary_remotecnt); 225 printf(" prevrole: %s\n", role2str(res->hr_previous_role)); 226 227 return (0); 228} 229 230static void 231control_dump(int argc, char *argv[]) 232{ 233 struct hast_resource *res; 234 int ec, ret; 235 236 /* Dump metadata of the given resource(s). */ 237 238 ec = 0; 239 if (argc == 0 || (argc == 1 && strcmp(argv[0], "all") == 0)) { 240 TAILQ_FOREACH(res, &cfg->hc_resources, hr_next) { 241 ret = dump_one(res); 242 if (ret != 0 && ec == 0) 243 ec = ret; 244 } 245 } else { 246 int ii; 247 248 for (ii = 0; ii < argc; ii++) { 249 TAILQ_FOREACH(res, &cfg->hc_resources, hr_next) { 250 if (strcmp(argv[ii], res->hr_name) == 0) 251 break; 252 } 253 if (res == NULL) { 254 pjdlog_error("Unknown resource %s.", argv[ii]); 255 if (ec == 0) 256 ec = EX_DATAERR; 257 continue; 258 } 259 ret = dump_one(res); 260 if (ret != 0 && ec == 0) 261 ec = ret; 262 } 263 } 264 exit(ec); 265} 266 267static int 268control_set_role(struct nv *nv, const char *newrole) 269{ 270 const char *res, *oldrole; 271 unsigned int ii; 272 int error, ret; 273 274 ret = 0; 275 276 for (ii = 0; ; ii++) { 277 res = nv_get_string(nv, "resource%u", ii); 278 if (res == NULL) 279 break; 280 pjdlog_prefix_set("[%s] ", res); 281 error = nv_get_int16(nv, "error%u", ii); 282 if (error != 0) { 283 if (ret == 0) 284 ret = error; 285 pjdlog_warning("Received error %d from hastd.", error); 286 continue; 287 } 288 oldrole = nv_get_string(nv, "role%u", ii); 289 if (strcmp(oldrole, newrole) == 0) 290 pjdlog_debug(2, "Role unchanged (%s).", oldrole); 291 else { 292 pjdlog_debug(1, "Role changed from %s to %s.", oldrole, 293 newrole); 294 } 295 } 296 pjdlog_prefix_set("%s", ""); 297 return (ret); 298} 299 300static int 301control_status(struct nv *nv) 302{ 303 unsigned int ii; 304 const char *str; 305 int error, ret; 306 307 ret = 0; 308 309 for (ii = 0; ; ii++) { 310 str = nv_get_string(nv, "resource%u", ii); 311 if (str == NULL) 312 break; 313 printf("%s:\n", str); 314 error = nv_get_int16(nv, "error%u", ii); 315 if (error != 0) { 316 if (ret == 0) 317 ret = error; 318 printf(" error: %d\n", error); 319 continue; 320 } 321 printf(" role: %s\n", nv_get_string(nv, "role%u", ii)); 322 printf(" provname: %s\n", 323 nv_get_string(nv, "provname%u", ii)); 324 printf(" localpath: %s\n", 325 nv_get_string(nv, "localpath%u", ii)); 326 printf(" extentsize: %u (%NB)\n", 327 (unsigned int)nv_get_uint32(nv, "extentsize%u", ii), 328 (intmax_t)nv_get_uint32(nv, "extentsize%u", ii)); 329 printf(" keepdirty: %u\n", 330 (unsigned int)nv_get_uint32(nv, "keepdirty%u", ii)); 331 printf(" remoteaddr: %s\n", 332 nv_get_string(nv, "remoteaddr%u", ii)); 333 printf(" replication: %s\n", 334 nv_get_string(nv, "replication%u", ii)); 335 str = nv_get_string(nv, "status%u", ii); 336 if (str != NULL) 337 printf(" status: %s\n", str); 338 printf(" dirty: %ju (%NB)\n", 339 (uintmax_t)nv_get_uint64(nv, "dirty%u", ii), 340 (intmax_t)nv_get_uint64(nv, "dirty%u", ii)); 341 } 342 return (ret); 343} 344 345static int 346numfromstr(const char *str, intmax_t *nump) 347{ 348 intmax_t num; 349 char *suffix; 350 int rerrno; 351 352 rerrno = errno; 353 errno = 0; 354 num = strtoimax(str, &suffix, 0); 355 if (errno == 0 && *suffix != '\0') 356 errno = EINVAL; 357 if (errno != 0) 358 return (-1); 359 *nump = num; 360 errno = rerrno; 361 return (0); 362} 363 364int 365main(int argc, char *argv[]) 366{ 367 struct nv *nv; 368 intmax_t mediasize, extentsize, keepdirty; 369 int cmd, debug, error, ii; 370 const char *optstr; 371 372 debug = 0; 373 mediasize = extentsize = keepdirty = 0; 374 375 if (argc == 1) 376 usage(); 377 378 if (strcmp(argv[1], "create") == 0) { 379 cmd = CMD_CREATE; 380 optstr = "c:de:k:m:h"; 381 } else if (strcmp(argv[1], "role") == 0) { 382 cmd = CMD_ROLE; 383 optstr = "c:dh"; 384 } else if (strcmp(argv[1], "status") == 0) { 385 cmd = CMD_STATUS; 386 optstr = "c:dh"; 387 } else if (strcmp(argv[1], "dump") == 0) { 388 cmd = CMD_DUMP; 389 optstr = "c:dh"; 390 } else 391 usage(); 392 393 argc--; 394 argv++; 395 396 for (;;) { 397 int ch; 398 399 ch = getopt(argc, argv, optstr); 400 if (ch == -1) 401 break; 402 switch (ch) { 403 case 'c': 404 cfgpath = optarg; 405 break; 406 case 'd': 407 debug++; 408 break; 409 case 'e': 410 if (numfromstr(optarg, &extentsize) < 0) 411 err(1, "Invalid extentsize"); 412 break; 413 case 'k': 414 if (numfromstr(optarg, &keepdirty) < 0) 415 err(1, "Invalid keepdirty"); 416 break; 417 case 'm': 418 if (numfromstr(optarg, &mediasize) < 0) 419 err(1, "Invalid mediasize"); 420 break; 421 case 'h': 422 default: 423 usage(); 424 } 425 } 426 argc -= optind; 427 argv += optind; 428 429 switch (cmd) { 430 case CMD_CREATE: 431 case CMD_ROLE: 432 if (argc == 0) 433 usage(); 434 break; 435 } 436 437 pjdlog_init(PJDLOG_MODE_STD); 438 pjdlog_debug_set(debug); 439 440 cfg = yy_config_parse(cfgpath, true); 441 assert(cfg != NULL); 442 443 switch (cmd) { 444 case CMD_CREATE: 445 control_create(argc, argv, mediasize, extentsize, keepdirty); 446 /* NOTREACHED */ 447 assert(!"What are we doing here?!"); 448 break; 449 case CMD_DUMP: 450 /* Dump metadata from local component of the given resource. */ 451 control_dump(argc, argv); 452 /* NOTREACHED */ 453 assert(!"What are we doing here?!"); 454 break; 455 case CMD_ROLE: 456 /* Change role for the given resources. */ 457 if (argc < 2) 458 usage(); 459 nv = nv_alloc(); 460 nv_add_uint8(nv, HASTCTL_CMD_SETROLE, "cmd"); 461 if (strcmp(argv[0], "init") == 0) 462 nv_add_uint8(nv, HAST_ROLE_INIT, "role"); 463 else if (strcmp(argv[0], "primary") == 0) 464 nv_add_uint8(nv, HAST_ROLE_PRIMARY, "role"); 465 else if (strcmp(argv[0], "secondary") == 0) 466 nv_add_uint8(nv, HAST_ROLE_SECONDARY, "role"); 467 else 468 usage(); 469 for (ii = 0; ii < argc - 1; ii++) 470 nv_add_string(nv, argv[ii + 1], "resource%d", ii); 471 break; 472 case CMD_STATUS: 473 /* Obtain status of the given resources. */ 474 nv = nv_alloc(); 475 nv_add_uint8(nv, HASTCTL_CMD_STATUS, "cmd"); 476 if (argc == 0) 477 nv_add_string(nv, "all", "resource%d", 0); 478 else { 479 for (ii = 0; ii < argc; ii++) 480 nv_add_string(nv, argv[ii], "resource%d", ii); 481 } 482 break; 483 default: 484 assert(!"Impossible role!"); 485 } 486 487 /* Setup control connection... */ 488 if (proto_client(cfg->hc_controladdr, &controlconn) < 0) { 489 pjdlog_exit(EX_OSERR, 490 "Unable to setup control connection to %s", 491 cfg->hc_controladdr); 492 } 493 /* ...and connect to hastd. */ 494 if (proto_connect(controlconn, HAST_TIMEOUT) < 0) { 495 pjdlog_exit(EX_OSERR, "Unable to connect to hastd via %s", 496 cfg->hc_controladdr); 497 } 498 499 if (drop_privs() != 0) 500 exit(EX_CONFIG); 501 pjdlog_debug(1, "Privileges successfully dropped."); 502 503 /* Send the command to the server... */ 504 if (hast_proto_send(NULL, controlconn, nv, NULL, 0) < 0) { 505 pjdlog_exit(EX_UNAVAILABLE, 506 "Unable to send command to hastd via %s", 507 cfg->hc_controladdr); 508 } 509 nv_free(nv); 510 /* ...and receive reply. */ 511 if (hast_proto_recv(NULL, controlconn, &nv, NULL, 0) < 0) { 512 pjdlog_exit(EX_UNAVAILABLE, 513 "cannot receive reply from hastd via %s", 514 cfg->hc_controladdr); 515 } 516 517 error = nv_get_int16(nv, "error"); 518 if (error != 0) { 519 pjdlog_exitx(EX_SOFTWARE, "Error %d received from hastd.", 520 error); 521 } 522 nv_set_error(nv, 0); 523 524 switch (cmd) { 525 case CMD_ROLE: 526 error = control_set_role(nv, argv[0]); 527 break; 528 case CMD_STATUS: 529 error = control_status(nv); 530 break; 531 default: 532 assert(!"Impossible role!"); 533 } 534 535 exit(error); 536} 537