| 1 | /* |
| 2 | * Copyright (c) 2008 The DragonFly Project. All rights reserved. |
| 3 | * |
| 4 | * This code is derived from software contributed to The DragonFly Project |
| 5 | * by Matthew Dillon <dillon@backplane.com> |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * |
| 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 |
| 15 | * the documentation and/or other materials provided with the |
| 16 | * distribution. |
| 17 | * 3. Neither the name of The DragonFly Project nor the names of its |
| 18 | * contributors may be used to endorse or promote products derived |
| 19 | * from this software without specific, prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 22 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 24 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 25 | * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 26 | * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 27 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 28 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 29 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 30 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 31 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | */ |
| 34 | /* |
| 35 | * Clean up specific HAMMER filesystems or all HAMMER filesystems. |
| 36 | * |
| 37 | * If no filesystems are specified any HAMMER- or null-mounted hammer PFS's |
| 38 | * are cleaned. |
| 39 | * |
| 40 | * Each HAMMER filesystem may contain a configuration file. If no |
| 41 | * configuration file is present one will be created with the following |
| 42 | * defaults: |
| 43 | * |
| 44 | * snapshots 1d 60d (0d 0d for /tmp, /var/tmp, /usr/obj) |
| 45 | * prune 1d 5m |
| 46 | * rebalance 1d 5m |
| 47 | * #dedup 1d 5m (not enabled by default) |
| 48 | * reblock 1d 5m |
| 49 | * recopy 30d 10m |
| 50 | * |
| 51 | * All hammer commands create and maintain cycle files in the snapshots |
| 52 | * directory. |
| 53 | * |
| 54 | * For HAMMER version 2- the configuration file is a named 'config' in |
| 55 | * the snapshots directory, which defaults to <pfs>/snapshots. |
| 56 | * For HAMMER version 3+ the configuration file is saved in filesystem |
| 57 | * meta-data. The snapshots directory defaults to /var/hammer/<pfs> |
| 58 | * (/var/hammer/root for root mount). |
| 59 | */ |
| 60 | |
| 61 | #include "hammer.h" |
| 62 | |
| 63 | #include <libutil.h> |
| 64 | |
| 65 | struct didpfs { |
| 66 | struct didpfs *next; |
| 67 | hammer_uuid_t uuid; |
| 68 | }; |
| 69 | |
| 70 | static void do_cleanup(const char *path); |
| 71 | static void config_init(const char *path, struct hammer_ioc_config *config); |
| 72 | static void migrate_config(FILE *fp, struct hammer_ioc_config *config); |
| 73 | static void migrate_snapshots(int fd, const char *snapshots_path); |
| 74 | static void migrate_one_snapshot(int fd, const char *fpath, |
| 75 | struct hammer_ioc_snapshot *snapshot); |
| 76 | static int strtosecs(char *ptr); |
| 77 | static const char *dividing_slash(const char *path); |
| 78 | static int check_period(const char *snapshots_path, const char *cmd, int arg1, |
| 79 | time_t *savep); |
| 80 | static void save_period(const char *snapshots_path, const char *cmd, |
| 81 | time_t savet); |
| 82 | static int check_softlinks(int fd, int new_config, const char *snapshots_path); |
| 83 | static void cleanup_softlinks(int fd, int new_config, |
| 84 | const char *snapshots_path, int arg2, char *arg3); |
| 85 | static void delete_snapshots(int fd, struct hammer_ioc_snapshot *dsnapshot); |
| 86 | static int check_expired(const char *fpath, int arg2); |
| 87 | |
| 88 | static int create_snapshot(const char *path, const char *snapshots_path); |
| 89 | static int cleanup_rebalance(const char *path, const char *snapshots_path, |
| 90 | int arg1, int arg2); |
| 91 | static int cleanup_prune(const char *path, const char *snapshots_path, |
| 92 | int arg1, int arg2, int snapshots_disabled); |
| 93 | static int cleanup_reblock(const char *path, const char *snapshots_path, |
| 94 | int arg1, int arg2); |
| 95 | static int cleanup_recopy(const char *path, const char *snapshots_path, |
| 96 | int arg1, int arg2); |
| 97 | static int cleanup_dedup(const char *path, const char *snapshots_path, |
| 98 | int arg1, int arg2); |
| 99 | |
| 100 | static void runcmd(int *resp, const char *ctl, ...) __printflike(2, 3); |
| 101 | |
| 102 | #define WS " \t\r\n" |
| 103 | |
| 104 | struct didpfs *FirstPFS; |
| 105 | |
| 106 | void |
| 107 | hammer_cmd_cleanup(char **av, int ac) |
| 108 | { |
| 109 | char *fstype, *fs, *path; |
| 110 | struct statfs *stfsbuf; |
| 111 | int mntsize, i; |
| 112 | |
| 113 | tzset(); |
| 114 | if (ac == 0) { |
| 115 | mntsize = getmntinfo(&stfsbuf, MNT_NOWAIT); |
| 116 | if (mntsize > 0) { |
| 117 | for (i=0; i < mntsize; i++) { |
| 118 | /* |
| 119 | * We will cleanup in the case fstype is hammer. |
| 120 | * If we have null-mounted PFS, we check the |
| 121 | * mount source. If it looks like a PFS, we |
| 122 | * proceed to cleanup also. |
| 123 | */ |
| 124 | fstype = stfsbuf[i].f_fstypename; |
| 125 | fs = stfsbuf[i].f_mntfromname; |
| 126 | if ((strcmp(fstype, "hammer") == 0) || |
| 127 | ((strcmp(fstype, "null") == 0) && |
| 128 | (strstr(fs, "/@@0x") != NULL || |
| 129 | strstr(fs, "/@@-1") != NULL))) { |
| 130 | path = stfsbuf[i].f_mntonname; |
| 131 | do_cleanup(path); |
| 132 | } |
| 133 | } |
| 134 | } |
| 135 | } else { |
| 136 | while (ac) { |
| 137 | do_cleanup(*av); |
| 138 | --ac; |
| 139 | ++av; |
| 140 | } |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | static |
| 145 | void |
| 146 | do_cleanup(const char *path) |
| 147 | { |
| 148 | struct hammer_ioc_pseudofs_rw pfs; |
| 149 | struct hammer_ioc_config config; |
| 150 | struct hammer_ioc_version version; |
| 151 | union hammer_ioc_mrecord_any mrec_tmp; |
| 152 | char *snapshots_path = NULL; |
| 153 | char *config_path; |
| 154 | struct stat st; |
| 155 | char *cmd; |
| 156 | char *ptr; |
| 157 | int arg1; |
| 158 | int arg2; |
| 159 | char *arg3; |
| 160 | time_t savet; |
| 161 | char buf[256]; |
| 162 | char *cbase; |
| 163 | char *cptr; |
| 164 | FILE *fp = NULL; |
| 165 | struct didpfs *didpfs; |
| 166 | int snapshots_disabled = 0; |
| 167 | int prune_warning = 0; |
| 168 | int new_config = 0; |
| 169 | int snapshots_from_pfs = 0; |
| 170 | int fd; |
| 171 | int r; |
| 172 | int found_rebal = 0; |
| 173 | |
| 174 | bzero(&mrec_tmp, sizeof(mrec_tmp)); |
| 175 | clrpfs(&pfs, &mrec_tmp.pfs.pfsd, -1); |
| 176 | |
| 177 | printf("cleanup %-20s -", path); |
| 178 | fd = open(path, O_RDONLY); |
| 179 | if (fd < 0) { |
| 180 | printf(" unable to access directory: %s\n", strerror(errno)); |
| 181 | return; |
| 182 | } |
| 183 | if (ioctl(fd, HAMMERIOC_GET_PSEUDOFS, &pfs) < 0) { |
| 184 | printf(" not a HAMMER filesystem: %s\n", strerror(errno)); |
| 185 | close(fd); |
| 186 | return; |
| 187 | } |
| 188 | if (pfs.version != HAMMER_IOC_PSEUDOFS_VERSION) { |
| 189 | printf(" unrecognized HAMMER version\n"); |
| 190 | close(fd); |
| 191 | return; |
| 192 | } |
| 193 | bzero(&version, sizeof(version)); |
| 194 | if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0) { |
| 195 | printf(" HAMMER filesystem but couldn't retrieve version!\n"); |
| 196 | close(fd); |
| 197 | return; |
| 198 | } |
| 199 | HammerVersion = version.cur_version; |
| 200 | |
| 201 | bzero(&config, sizeof(config)); |
| 202 | if (version.cur_version >= 3) { |
| 203 | if (ioctl(fd, HAMMERIOC_GET_CONFIG, &config) == 0 && |
| 204 | config.head.error == 0) { |
| 205 | new_config = 1; |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | /* |
| 210 | * Make sure we have not already handled this PFS. Several nullfs |
| 211 | * mounts might alias the same PFS. |
| 212 | */ |
| 213 | for (didpfs = FirstPFS; didpfs; didpfs = didpfs->next) { |
| 214 | if (hammer_uuid_compare(&didpfs->uuid, |
| 215 | &mrec_tmp.pfs.pfsd.unique_uuid) == 0) { |
| 216 | printf(" PFS#%d already handled\n", pfs.pfs_id); |
| 217 | close(fd); |
| 218 | return; |
| 219 | } |
| 220 | } |
| 221 | didpfs = malloc(sizeof(*didpfs)); |
| 222 | didpfs->next = FirstPFS; |
| 223 | FirstPFS = didpfs; |
| 224 | didpfs->uuid = mrec_tmp.pfs.pfsd.unique_uuid; |
| 225 | |
| 226 | /* |
| 227 | * Calculate the old snapshots directory for HAMMER VERSION < 3 |
| 228 | * |
| 229 | * If the directory is explicitly specified in the PFS config |
| 230 | * we flag it and will not migrate it later. |
| 231 | */ |
| 232 | if (mrec_tmp.pfs.pfsd.snapshots[0] == '/') { |
| 233 | asprintf(&snapshots_path, "%s", mrec_tmp.pfs.pfsd.snapshots); |
| 234 | snapshots_from_pfs = 1; |
| 235 | } else if (mrec_tmp.pfs.pfsd.snapshots[0]) { |
| 236 | printf(" WARNING: pfs-slave's snapshots dir is not absolute\n"); |
| 237 | close(fd); |
| 238 | return; |
| 239 | } else if (hammer_is_pfs_slave(&mrec_tmp.pfs.pfsd)) { |
| 240 | if (version.cur_version < 3) { |
| 241 | printf(" WARNING: must configure snapshot dir for PFS slave\n"); |
| 242 | printf("\tWe suggest <fs>/var/slaves/<name> where " |
| 243 | "<fs> is the base HAMMER fs\n"); |
| 244 | printf("\tcontaining the slave\n"); |
| 245 | close(fd); |
| 246 | return; |
| 247 | } |
| 248 | } else { |
| 249 | asprintf(&snapshots_path, |
| 250 | "%s%ssnapshots", path, dividing_slash(path)); |
| 251 | } |
| 252 | |
| 253 | /* |
| 254 | * Check for old-style config file |
| 255 | */ |
| 256 | if (snapshots_path) { |
| 257 | asprintf(&config_path, "%s/config", snapshots_path); |
| 258 | fp = fopen(config_path, "r"); |
| 259 | } |
| 260 | |
| 261 | /* |
| 262 | * Handle upgrades to hammer version 3, move the config |
| 263 | * file into meta-data. |
| 264 | * |
| 265 | * For the old config read the file into the config structure, |
| 266 | * we will parse it out of the config structure regardless. |
| 267 | */ |
| 268 | if (version.cur_version >= 3) { |
| 269 | if (fp) { |
| 270 | printf("(migrating) "); |
| 271 | fflush(stdout); |
| 272 | migrate_config(fp, &config); |
| 273 | migrate_snapshots(fd, snapshots_path); |
| 274 | fclose(fp); |
| 275 | if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) { |
| 276 | printf(" cannot init meta-data config!\n"); |
| 277 | close(fd); |
| 278 | return; |
| 279 | } |
| 280 | remove(config_path); |
| 281 | } else if (new_config == 0) { |
| 282 | config_init(path, &config); |
| 283 | if (ioctl(fd, HAMMERIOC_SET_CONFIG, &config) < 0) { |
| 284 | printf(" cannot init meta-data config!\n"); |
| 285 | close(fd); |
| 286 | return; |
| 287 | } |
| 288 | } |
| 289 | new_config = 1; |
| 290 | } else { |
| 291 | /* |
| 292 | * Create missing snapshots directory for HAMMER VERSION < 3 |
| 293 | */ |
| 294 | if (stat(snapshots_path, &st) < 0) { |
| 295 | if (mkdir(snapshots_path, 0755) != 0) { |
| 296 | free(snapshots_path); |
| 297 | printf(" unable to create snapshot dir \"%s\": %s\n", |
| 298 | snapshots_path, strerror(errno)); |
| 299 | close(fd); |
| 300 | return; |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | /* |
| 305 | * Create missing config file for HAMMER VERSION < 3 |
| 306 | */ |
| 307 | if (fp == NULL) { |
| 308 | config_init(path, &config); |
| 309 | fp = fopen(config_path, "w"); |
| 310 | if (fp) { |
| 311 | fwrite(config.config.text, 1, |
| 312 | strlen(config.config.text), fp); |
| 313 | fclose(fp); |
| 314 | } |
| 315 | } else { |
| 316 | migrate_config(fp, &config); |
| 317 | fclose(fp); |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | /* |
| 322 | * If snapshots_from_pfs is not set we calculate the new snapshots |
| 323 | * directory default (in /var) for HAMMER VERSION >= 3 and migrate |
| 324 | * the old snapshots directory over. |
| 325 | * |
| 326 | * People who have set an explicit snapshots directory will have |
| 327 | * to migrate the data manually into /var/hammer, or not bother at |
| 328 | * all. People running slaves may wish to migrate it and then |
| 329 | * clear the snapshots specification in the PFS config for the |
| 330 | * slave. |
| 331 | */ |
| 332 | if (new_config && snapshots_from_pfs == 0) { |
| 333 | char *npath; |
| 334 | |
| 335 | if (path[0] != '/') { |
| 336 | printf(" path must start with '/'\n"); |
| 337 | return; |
| 338 | } |
| 339 | if (strcmp(path, "/") == 0) |
| 340 | asprintf(&npath, "%s/root", SNAPSHOTS_BASE); |
| 341 | else |
| 342 | asprintf(&npath, "%s/%s", SNAPSHOTS_BASE, path + 1); |
| 343 | if (snapshots_path) { |
| 344 | if (stat(npath, &st) < 0 && errno == ENOENT) { |
| 345 | if (stat(snapshots_path, &st) < 0 && errno == ENOENT) { |
| 346 | printf(" HAMMER UPGRADE: Creating snapshots\n" |
| 347 | "\tCreating snapshots in %s\n", |
| 348 | npath); |
| 349 | runcmd(&r, "mkdir -p %s", npath); |
| 350 | } else { |
| 351 | printf(" HAMMER UPGRADE: Moving snapshots\n" |
| 352 | "\tMoving snapshots from %s to %s\n", |
| 353 | snapshots_path, npath); |
| 354 | runcmd(&r, "mkdir -p %s", npath); |
| 355 | runcmd(&r, "cpdup %s %s", snapshots_path, npath); |
| 356 | if (r != 0) { |
| 357 | printf("Unable to move snapshots directory!\n"); |
| 358 | printf("Please fix this critical error.\n"); |
| 359 | printf("Aborting cleanup of %s\n", path); |
| 360 | close(fd); |
| 361 | return; |
| 362 | } |
| 363 | runcmd(&r, "rm -rf %s", snapshots_path); |
| 364 | } |
| 365 | } |
| 366 | free(snapshots_path); |
| 367 | } else if (stat(npath, &st) < 0 && errno == ENOENT) { |
| 368 | runcmd(&r, "mkdir -p %s", npath); |
| 369 | } |
| 370 | snapshots_path = npath; |
| 371 | } |
| 372 | |
| 373 | /* |
| 374 | * Lock the PFS. fd is the base directory of the mounted PFS. |
| 375 | */ |
| 376 | if (flock(fd, LOCK_EX|LOCK_NB) == -1) { |
| 377 | if (errno == EWOULDBLOCK) |
| 378 | printf(" PFS#%d locked by other process\n", pfs.pfs_id); |
| 379 | else |
| 380 | printf(" can not lock %s: %s\n", config_path, strerror(errno)); |
| 381 | close(fd); |
| 382 | return; |
| 383 | } |
| 384 | |
| 385 | printf(" handle PFS#%d using %s\n", pfs.pfs_id, snapshots_path); |
| 386 | |
| 387 | struct pidfh *pfh = NULL; |
| 388 | static char pidfile[PIDFILE_BUFSIZE]; |
| 389 | |
| 390 | snprintf (pidfile, PIDFILE_BUFSIZE, "%s/hammer.cleanup.%d", |
| 391 | pidfile_loc, getpid()); |
| 392 | pfh = pidfile_open(pidfile, 0644, NULL); |
| 393 | if (pfh == NULL) |
| 394 | warn ("Unable to open or create %s", pidfile); |
| 395 | pidfile_write(pfh); |
| 396 | |
| 397 | /* |
| 398 | * Process the config file |
| 399 | */ |
| 400 | cbase = config.config.text; |
| 401 | |
| 402 | while ((cptr = strchr(cbase, '\n')) != NULL) { |
| 403 | bcopy(cbase, buf, cptr - cbase); |
| 404 | buf[cptr - cbase] = 0; |
| 405 | cbase = cptr + 1; |
| 406 | |
| 407 | cmd = strtok(buf, WS); |
| 408 | if (cmd == NULL || cmd[0] == '#') |
| 409 | continue; |
| 410 | |
| 411 | arg1 = 0; |
| 412 | arg2 = 0; |
| 413 | arg3 = NULL; |
| 414 | if ((ptr = strtok(NULL, WS)) != NULL) { |
| 415 | arg1 = strtosecs(ptr); |
| 416 | if ((ptr = strtok(NULL, WS)) != NULL) { |
| 417 | arg2 = strtosecs(ptr); |
| 418 | arg3 = strtok(NULL, WS); |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | printf("%20s - ", cmd); |
| 423 | fflush(stdout); |
| 424 | |
| 425 | r = 1; |
| 426 | if (strcmp(cmd, "snapshots") == 0) { |
| 427 | if (arg1 == 0) { |
| 428 | if (arg2 && |
| 429 | check_softlinks(fd, new_config, |
| 430 | snapshots_path)) { |
| 431 | printf("only removing old snapshots\n"); |
| 432 | prune_warning = 1; |
| 433 | cleanup_softlinks(fd, new_config, |
| 434 | snapshots_path, |
| 435 | arg2, arg3); |
| 436 | } else { |
| 437 | printf("disabled\n"); |
| 438 | snapshots_disabled = 1; |
| 439 | } |
| 440 | } else |
| 441 | if (check_period(snapshots_path, cmd, arg1, &savet)) { |
| 442 | printf("run\n"); |
| 443 | cleanup_softlinks(fd, new_config, |
| 444 | snapshots_path, |
| 445 | arg2, arg3); |
| 446 | r = create_snapshot(path, snapshots_path); |
| 447 | } else { |
| 448 | printf("skip\n"); |
| 449 | } |
| 450 | } else if (arg1 == 0) { |
| 451 | /* |
| 452 | * The commands following this check can't handle |
| 453 | * a period of 0, so call the feature disabled and |
| 454 | * ignore the directive. |
| 455 | */ |
| 456 | printf("disabled\n"); |
| 457 | } else if (strcmp(cmd, "prune") == 0) { |
| 458 | if (check_period(snapshots_path, cmd, arg1, &savet)) { |
| 459 | if (prune_warning) { |
| 460 | printf("run - WARNING snapshot " |
| 461 | "softlinks present " |
| 462 | "but snapshots disabled\n"); |
| 463 | } else { |
| 464 | printf("run\n"); |
| 465 | } |
| 466 | r = cleanup_prune(path, snapshots_path, |
| 467 | arg1, arg2, snapshots_disabled); |
| 468 | } else { |
| 469 | printf("skip\n"); |
| 470 | } |
| 471 | } else if (strcmp(cmd, "rebalance") == 0) { |
| 472 | found_rebal = 1; |
| 473 | if (check_period(snapshots_path, cmd, arg1, &savet)) { |
| 474 | printf("run"); |
| 475 | fflush(stdout); |
| 476 | if (VerboseOpt) |
| 477 | printf("\n"); |
| 478 | r = cleanup_rebalance(path, snapshots_path, |
| 479 | arg1, arg2); |
| 480 | } else { |
| 481 | printf("skip\n"); |
| 482 | } |
| 483 | } else if (strcmp(cmd, "reblock") == 0) { |
| 484 | if (check_period(snapshots_path, cmd, arg1, &savet)) { |
| 485 | printf("run"); |
| 486 | fflush(stdout); |
| 487 | if (VerboseOpt) |
| 488 | printf("\n"); |
| 489 | r = cleanup_reblock(path, snapshots_path, |
| 490 | arg1, arg2); |
| 491 | } else { |
| 492 | printf("skip\n"); |
| 493 | } |
| 494 | } else if (strcmp(cmd, "recopy") == 0) { |
| 495 | if (check_period(snapshots_path, cmd, arg1, &savet)) { |
| 496 | printf("run"); |
| 497 | fflush(stdout); |
| 498 | if (VerboseOpt) |
| 499 | printf("\n"); |
| 500 | r = cleanup_recopy(path, snapshots_path, |
| 501 | arg1, arg2); |
| 502 | } else { |
| 503 | printf("skip\n"); |
| 504 | } |
| 505 | } else if (strcmp(cmd, "dedup") == 0) { |
| 506 | if (check_period(snapshots_path, cmd, arg1, &savet)) { |
| 507 | printf("run"); |
| 508 | fflush(stdout); |
| 509 | if (VerboseOpt) |
| 510 | printf("\n"); |
| 511 | r = cleanup_dedup(path, snapshots_path, |
| 512 | arg1, arg2); |
| 513 | } else { |
| 514 | printf("skip\n"); |
| 515 | } |
| 516 | } else { |
| 517 | printf("unknown directive\n"); |
| 518 | r = 1; |
| 519 | } |
| 520 | if (r == 0) |
| 521 | save_period(snapshots_path, cmd, savet); |
| 522 | } |
| 523 | |
| 524 | /* |
| 525 | * Add new rebalance feature if the config doesn't have it. |
| 526 | * (old style config only). |
| 527 | */ |
| 528 | if (new_config == 0 && found_rebal == 0) { |
| 529 | if ((fp = fopen(config_path, "r+")) != NULL) { |
| 530 | fseek(fp, 0L, 2); |
| 531 | fprintf(fp, "rebalance 1d 5m\n"); |
| 532 | fclose(fp); |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | /* |
| 537 | * Cleanup, and delay a little |
| 538 | * |
| 539 | * NOTE: pidfile_remove() closes, removes, and frees the pfh. |
| 540 | * pidfile_close() closes and frees. |
| 541 | */ |
| 542 | close(fd); |
| 543 | usleep(1000); |
| 544 | pidfile_remove(pfh); |
| 545 | } |
| 546 | |
| 547 | /* |
| 548 | * Initialize new config data (new or old style) |
| 549 | */ |
| 550 | static |
| 551 | void |
| 552 | config_init(const char *path, struct hammer_ioc_config *config) |
| 553 | { |
| 554 | const char *snapshots; |
| 555 | |
| 556 | if (strcmp(path, "/tmp") == 0 || |
| 557 | strcmp(path, "/var/tmp") == 0 || |
| 558 | strcmp(path, "/usr/obj") == 0) { |
| 559 | snapshots = "snapshots 0d 0d\n"; |
| 560 | } else { |
| 561 | snapshots = "snapshots 1d 60d\n"; |
| 562 | } |
| 563 | bzero(config->config.text, sizeof(config->config.text)); |
| 564 | snprintf(config->config.text, sizeof(config->config.text) - 1, "%s%s", |
| 565 | snapshots, |
| 566 | "prune 1d 5m\n" |
| 567 | "rebalance 1d 5m\n" |
| 568 | "#dedup 1d 5m\n" |
| 569 | "reblock 1d 5m\n" |
| 570 | "recopy 30d 10m\n"); |
| 571 | } |
| 572 | |
| 573 | /* |
| 574 | * Migrate configuration data from the old snapshots/config |
| 575 | * file to the new meta-data format. |
| 576 | */ |
| 577 | static |
| 578 | void |
| 579 | migrate_config(FILE *fp, struct hammer_ioc_config *config) |
| 580 | { |
| 581 | int n; |
| 582 | |
| 583 | n = fread(config->config.text, 1, sizeof(config->config.text) - 1, fp); |
| 584 | if (n >= 0) |
| 585 | bzero(config->config.text + n, sizeof(config->config.text) - n); |
| 586 | } |
| 587 | |
| 588 | /* |
| 589 | * Migrate snapshot softlinks in the snapshots directory to the |
| 590 | * new meta-data format. The softlinks are left intact, but |
| 591 | * this way the pruning code won't lose track of them if you |
| 592 | * happen to blow away the snapshots directory. |
| 593 | */ |
| 594 | static |
| 595 | void |
| 596 | migrate_snapshots(int fd, const char *snapshots_path) |
| 597 | { |
| 598 | struct hammer_ioc_snapshot snapshot; |
| 599 | struct dirent *den; |
| 600 | struct stat st; |
| 601 | DIR *dir; |
| 602 | char *fpath; |
| 603 | |
| 604 | bzero(&snapshot, sizeof(snapshot)); |
| 605 | |
| 606 | if ((dir = opendir(snapshots_path)) != NULL) { |
| 607 | while ((den = readdir(dir)) != NULL) { |
| 608 | if (den->d_name[0] == '.') |
| 609 | continue; |
| 610 | asprintf(&fpath, "%s/%s", snapshots_path, den->d_name); |
| 611 | if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode)) |
| 612 | migrate_one_snapshot(fd, fpath, &snapshot); |
| 613 | free(fpath); |
| 614 | } |
| 615 | closedir(dir); |
| 616 | } |
| 617 | migrate_one_snapshot(fd, NULL, &snapshot); |
| 618 | |
| 619 | } |
| 620 | |
| 621 | /* |
| 622 | * Migrate a single snapshot. If fpath is NULL the ioctl is flushed, |
| 623 | * otherwise it is flushed when it fills up. |
| 624 | */ |
| 625 | static |
| 626 | void |
| 627 | migrate_one_snapshot(int fd, const char *fpath, |
| 628 | struct hammer_ioc_snapshot *snapshot) |
| 629 | { |
| 630 | if (fpath) { |
| 631 | hammer_snapshot_data_t snap; |
| 632 | struct tm tm; |
| 633 | time_t t; |
| 634 | int year; |
| 635 | int month; |
| 636 | int day = 0; |
| 637 | int hour = 0; |
| 638 | int minute = 0; |
| 639 | int r; |
| 640 | char linkbuf[1024]; |
| 641 | const char *ptr; |
| 642 | hammer_tid_t tid; |
| 643 | |
| 644 | t = (time_t)-1; |
| 645 | tid = (hammer_tid_t)(int64_t)-1; |
| 646 | |
| 647 | /* fpath may contain directory components */ |
| 648 | if ((ptr = strrchr(fpath, '/')) != NULL) |
| 649 | ++ptr; |
| 650 | else |
| 651 | ptr = fpath; |
| 652 | while (*ptr && *ptr != '-' && *ptr != '.') |
| 653 | ++ptr; |
| 654 | if (*ptr) |
| 655 | ++ptr; |
| 656 | r = sscanf(ptr, "%4d%2d%2d-%2d%2d", |
| 657 | &year, &month, &day, &hour, &minute); |
| 658 | |
| 659 | if (r >= 3) { |
| 660 | bzero(&tm, sizeof(tm)); |
| 661 | tm.tm_isdst = -1; |
| 662 | tm.tm_min = minute; |
| 663 | tm.tm_hour = hour; |
| 664 | tm.tm_mday = day; |
| 665 | tm.tm_mon = month - 1; |
| 666 | tm.tm_year = year - 1900; |
| 667 | t = mktime(&tm); |
| 668 | } |
| 669 | bzero(linkbuf, sizeof(linkbuf)); |
| 670 | if (readlink(fpath, linkbuf, sizeof(linkbuf) - 1) > 0 && |
| 671 | (ptr = strrchr(linkbuf, '@')) != NULL && |
| 672 | ptr > linkbuf && ptr[-1] == '@') { |
| 673 | tid = strtoull(ptr + 1, NULL, 16); |
| 674 | } |
| 675 | if (t != (time_t)-1 && tid != (hammer_tid_t)(int64_t)-1) { |
| 676 | snap = &snapshot->snaps[snapshot->count]; |
| 677 | bzero(snap, sizeof(*snap)); |
| 678 | snap->tid = tid; |
| 679 | snap->ts = (uint64_t)t * 1000000ULL; |
| 680 | snprintf(snap->label, sizeof(snap->label), |
| 681 | "migrated"); |
| 682 | ++snapshot->count; |
| 683 | } else { |
| 684 | printf(" non-canonical snapshot softlink: %s->%s\n", |
| 685 | fpath, linkbuf); |
| 686 | } |
| 687 | } |
| 688 | |
| 689 | if ((fpath == NULL && snapshot->count) || |
| 690 | snapshot->count == HAMMER_SNAPS_PER_IOCTL) { |
| 691 | printf(" (%d snapshots)", snapshot->count); |
| 692 | again: |
| 693 | if (ioctl(fd, HAMMERIOC_ADD_SNAPSHOT, snapshot) < 0) { |
| 694 | printf(" Ioctl to migrate snapshots failed: %s\n", |
| 695 | strerror(errno)); |
| 696 | } else if (snapshot->head.error == EALREADY) { |
| 697 | ++snapshot->index; |
| 698 | goto again; |
| 699 | } else if (snapshot->head.error) { |
| 700 | printf(" Ioctl to migrate snapshots failed: %s\n", |
| 701 | strerror(snapshot->head.error)); |
| 702 | } |
| 703 | printf("index %d\n", snapshot->index); |
| 704 | snapshot->index = 0; |
| 705 | snapshot->count = 0; |
| 706 | snapshot->head.error = 0; |
| 707 | } |
| 708 | } |
| 709 | |
| 710 | static |
| 711 | int |
| 712 | strtosecs(char *ptr) |
| 713 | { |
| 714 | int val; |
| 715 | |
| 716 | val = strtol(ptr, &ptr, 0); |
| 717 | switch(*ptr) { |
| 718 | case 'd': |
| 719 | val *= 24; |
| 720 | /* fall through */ |
| 721 | case 'h': |
| 722 | val *= 60; |
| 723 | /* fall through */ |
| 724 | case 'm': |
| 725 | val *= 60; |
| 726 | /* fall through */ |
| 727 | case 's': |
| 728 | break; |
| 729 | default: |
| 730 | errx(1, "illegal suffix converting %s", ptr); |
| 731 | /* not reached */ |
| 732 | break; |
| 733 | } |
| 734 | return(val); |
| 735 | } |
| 736 | |
| 737 | static |
| 738 | const char * |
| 739 | dividing_slash(const char *path) |
| 740 | { |
| 741 | int len = strlen(path); |
| 742 | if (len && path[len-1] == '/') |
| 743 | return(""); |
| 744 | else |
| 745 | return("/"); |
| 746 | } |
| 747 | |
| 748 | /* |
| 749 | * Check whether the desired period has elapsed since the last successful |
| 750 | * run. The run may take a while and cross a boundary so we remember the |
| 751 | * current time_t so we can save it later on. |
| 752 | * |
| 753 | * Periods in minutes, hours, or days are assumed to have been crossed |
| 754 | * if the local time crosses a minute, hour, or day boundary regardless |
| 755 | * of how close the last operation actually was. |
| 756 | * |
| 757 | * If ForceOpt is set always return true. |
| 758 | */ |
| 759 | static |
| 760 | int |
| 761 | check_period(const char *snapshots_path, const char *cmd, int arg1, |
| 762 | time_t *savep) |
| 763 | { |
| 764 | char *check_path; |
| 765 | struct tm tp1; |
| 766 | struct tm tp2; |
| 767 | FILE *fp; |
| 768 | time_t baset, lastt; |
| 769 | char buf[256]; |
| 770 | |
| 771 | time(savep); |
| 772 | localtime_r(savep, &tp1); |
| 773 | |
| 774 | /* |
| 775 | * Force run if -F |
| 776 | */ |
| 777 | if (ForceOpt) |
| 778 | return(1); |
| 779 | |
| 780 | /* |
| 781 | * Retrieve the start time of the last successful operation. |
| 782 | */ |
| 783 | asprintf(&check_path, "%s/.%s.period", snapshots_path, cmd); |
| 784 | fp = fopen(check_path, "r"); |
| 785 | free(check_path); |
| 786 | if (fp == NULL) |
| 787 | return(1); |
| 788 | if (fgets(buf, sizeof(buf), fp) == NULL) { |
| 789 | fclose(fp); |
| 790 | return(1); |
| 791 | } |
| 792 | fclose(fp); |
| 793 | |
| 794 | lastt = strtol(buf, NULL, 0); |
| 795 | localtime_r(&lastt, &tp2); |
| 796 | |
| 797 | /* |
| 798 | * Normalize the times. e.g. if asked to do something on a 1-day |
| 799 | * interval the operation will be performed as soon as the day |
| 800 | * turns over relative to the previous operation, even if the previous |
| 801 | * operation ran a few seconds ago just before midnight. |
| 802 | */ |
| 803 | if (arg1 % 60 == 0) { |
| 804 | tp1.tm_sec = 0; |
| 805 | tp2.tm_sec = 0; |
| 806 | } |
| 807 | if (arg1 % (60 * 60) == 0) { |
| 808 | tp1.tm_min = 0; |
| 809 | tp2.tm_min = 0; |
| 810 | } |
| 811 | if (arg1 % (24 * 60 * 60) == 0) { |
| 812 | tp1.tm_hour = 0; |
| 813 | tp2.tm_hour = 0; |
| 814 | } |
| 815 | |
| 816 | baset = mktime(&tp1); |
| 817 | lastt = mktime(&tp2); |
| 818 | |
| 819 | #if 0 |
| 820 | printf("%lld vs %lld\n", (long long)(baset - lastt), (long long)arg1); |
| 821 | #endif |
| 822 | |
| 823 | if ((int)(baset - lastt) >= arg1) |
| 824 | return(1); |
| 825 | return(0); |
| 826 | } |
| 827 | |
| 828 | /* |
| 829 | * Store the start time of the last successful operation. |
| 830 | */ |
| 831 | static |
| 832 | void |
| 833 | save_period(const char *snapshots_path, const char *cmd, |
| 834 | time_t savet) |
| 835 | { |
| 836 | char *ocheck_path; |
| 837 | char *ncheck_path; |
| 838 | FILE *fp; |
| 839 | |
| 840 | asprintf(&ocheck_path, "%s/.%s.period", snapshots_path, cmd); |
| 841 | asprintf(&ncheck_path, "%s/.%s.period.new", snapshots_path, cmd); |
| 842 | fp = fopen(ncheck_path, "w"); |
| 843 | if (fp) { |
| 844 | fprintf(fp, "0x%08llx\n", (long long)savet); |
| 845 | if (fclose(fp) == 0) |
| 846 | rename(ncheck_path, ocheck_path); |
| 847 | remove(ncheck_path); |
| 848 | } else { |
| 849 | fprintf(stderr, "hammer: Unable to create period-file %s: %s\n", |
| 850 | ncheck_path, strerror(errno)); |
| 851 | } |
| 852 | } |
| 853 | |
| 854 | /* |
| 855 | * Simply count the number of softlinks in the snapshots dir |
| 856 | */ |
| 857 | static |
| 858 | int |
| 859 | check_softlinks(int fd, int new_config, const char *snapshots_path) |
| 860 | { |
| 861 | struct dirent *den; |
| 862 | struct stat st; |
| 863 | DIR *dir; |
| 864 | char *fpath; |
| 865 | int res = 0; |
| 866 | |
| 867 | /* |
| 868 | * Old-style softlink-based snapshots |
| 869 | */ |
| 870 | if ((dir = opendir(snapshots_path)) != NULL) { |
| 871 | while ((den = readdir(dir)) != NULL) { |
| 872 | if (den->d_name[0] == '.') |
| 873 | continue; |
| 874 | asprintf(&fpath, "%s/%s", snapshots_path, den->d_name); |
| 875 | if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode)) |
| 876 | ++res; |
| 877 | free(fpath); |
| 878 | } |
| 879 | closedir(dir); |
| 880 | } |
| 881 | |
| 882 | /* |
| 883 | * New-style snapshots are stored as filesystem meta-data, |
| 884 | * count those too. |
| 885 | */ |
| 886 | if (new_config) { |
| 887 | struct hammer_ioc_snapshot snapshot; |
| 888 | |
| 889 | bzero(&snapshot, sizeof(snapshot)); |
| 890 | do { |
| 891 | if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0) { |
| 892 | err(2, "hammer cleanup: check_softlink " |
| 893 | "snapshot error"); |
| 894 | /* not reached */ |
| 895 | } |
| 896 | res += snapshot.count; |
| 897 | } while (snapshot.head.error == 0 && snapshot.count); |
| 898 | } |
| 899 | return (res); |
| 900 | } |
| 901 | |
| 902 | /* |
| 903 | * Clean up expired softlinks in the snapshots dir |
| 904 | */ |
| 905 | static |
| 906 | void |
| 907 | cleanup_softlinks(int fd, int new_config, |
| 908 | const char *snapshots_path, int arg2, char *arg3) |
| 909 | { |
| 910 | struct dirent *den; |
| 911 | struct stat st; |
| 912 | DIR *dir; |
| 913 | char *fpath; |
| 914 | int anylink = 0; |
| 915 | |
| 916 | if (arg3 != NULL && strstr(arg3, "any") != NULL) |
| 917 | anylink = 1; |
| 918 | |
| 919 | if ((dir = opendir(snapshots_path)) != NULL) { |
| 920 | while ((den = readdir(dir)) != NULL) { |
| 921 | if (den->d_name[0] == '.') |
| 922 | continue; |
| 923 | asprintf(&fpath, "%s/%s", snapshots_path, den->d_name); |
| 924 | if (lstat(fpath, &st) == 0 && S_ISLNK(st.st_mode) && |
| 925 | (anylink || strncmp(den->d_name, "snap-", 5) == 0)) { |
| 926 | if (check_expired(den->d_name, arg2)) { |
| 927 | if (VerboseOpt) { |
| 928 | printf(" expire %s\n", |
| 929 | fpath); |
| 930 | } |
| 931 | remove(fpath); |
| 932 | } |
| 933 | } |
| 934 | free(fpath); |
| 935 | } |
| 936 | closedir(dir); |
| 937 | } |
| 938 | |
| 939 | /* |
| 940 | * New-style snapshots are stored as filesystem meta-data, |
| 941 | * count those too. |
| 942 | */ |
| 943 | if (new_config) { |
| 944 | struct hammer_ioc_snapshot snapshot; |
| 945 | struct hammer_ioc_snapshot dsnapshot; |
| 946 | hammer_snapshot_data_t snap; |
| 947 | struct tm *tp; |
| 948 | time_t t; |
| 949 | time_t dt; |
| 950 | char snapts[32]; |
| 951 | uint32_t i; |
| 952 | |
| 953 | bzero(&snapshot, sizeof(snapshot)); |
| 954 | bzero(&dsnapshot, sizeof(dsnapshot)); |
| 955 | do { |
| 956 | if (ioctl(fd, HAMMERIOC_GET_SNAPSHOT, &snapshot) < 0) { |
| 957 | err(2, "hammer cleanup: check_softlink " |
| 958 | "snapshot error"); |
| 959 | /* not reached */ |
| 960 | } |
| 961 | for (i = 0; i < snapshot.count; ++i) { |
| 962 | snap = &snapshot.snaps[i]; |
| 963 | t = snap->ts / 1000000ULL; |
| 964 | dt = time(NULL) - t; |
| 965 | if ((int)dt > arg2 || snap->tid == 0) { |
| 966 | dsnapshot.snaps[dsnapshot.count++] = |
| 967 | *snap; |
| 968 | } |
| 969 | if ((int)dt > arg2 && VerboseOpt) { |
| 970 | tp = localtime(&t); |
| 971 | strftime(snapts, sizeof(snapts), |
| 972 | "%Y-%m-%d %H:%M:%S %Z", tp); |
| 973 | printf(" expire 0x%016jx %s %s\n", |
| 974 | (uintmax_t)snap->tid, |
| 975 | snapts, |
| 976 | snap->label); |
| 977 | } |
| 978 | if (dsnapshot.count == HAMMER_SNAPS_PER_IOCTL) |
| 979 | delete_snapshots(fd, &dsnapshot); |
| 980 | } |
| 981 | } while (snapshot.head.error == 0 && snapshot.count); |
| 982 | |
| 983 | if (dsnapshot.count) |
| 984 | delete_snapshots(fd, &dsnapshot); |
| 985 | } |
| 986 | } |
| 987 | |
| 988 | static |
| 989 | void |
| 990 | delete_snapshots(int fd, struct hammer_ioc_snapshot *dsnapshot) |
| 991 | { |
| 992 | for (;;) { |
| 993 | if (ioctl(fd, HAMMERIOC_DEL_SNAPSHOT, dsnapshot) < 0) { |
| 994 | printf(" Ioctl to delete snapshots failed: %s\n", |
| 995 | strerror(errno)); |
| 996 | break; |
| 997 | } |
| 998 | if (dsnapshot->head.error) { |
| 999 | printf(" Ioctl to delete snapshots failed at " |
| 1000 | "snap=%016jx: %s\n", |
| 1001 | dsnapshot->snaps[dsnapshot->index].tid, |
| 1002 | strerror(dsnapshot->head.error)); |
| 1003 | if (++dsnapshot->index < dsnapshot->count) |
| 1004 | continue; |
| 1005 | } |
| 1006 | break; |
| 1007 | } |
| 1008 | dsnapshot->index = 0; |
| 1009 | dsnapshot->count = 0; |
| 1010 | dsnapshot->head.error = 0; |
| 1011 | } |
| 1012 | |
| 1013 | /* |
| 1014 | * Take a softlink path in the form snap-yyyymmdd-hhmm and the |
| 1015 | * expiration in seconds (arg2) and return non-zero if the softlink |
| 1016 | * has expired. |
| 1017 | */ |
| 1018 | static |
| 1019 | int |
| 1020 | check_expired(const char *fpath, int arg2) |
| 1021 | { |
| 1022 | struct tm tm; |
| 1023 | time_t t; |
| 1024 | int year; |
| 1025 | int month; |
| 1026 | int day = 0; |
| 1027 | int hour = 0; |
| 1028 | int minute = 0; |
| 1029 | int r; |
| 1030 | |
| 1031 | while (*fpath && *fpath != '-' && *fpath != '.') |
| 1032 | ++fpath; |
| 1033 | if (*fpath) |
| 1034 | ++fpath; |
| 1035 | |
| 1036 | r = sscanf(fpath, "%4d%2d%2d-%2d%2d", |
| 1037 | &year, &month, &day, &hour, &minute); |
| 1038 | |
| 1039 | if (r >= 3) { |
| 1040 | bzero(&tm, sizeof(tm)); |
| 1041 | tm.tm_isdst = -1; |
| 1042 | tm.tm_min = minute; |
| 1043 | tm.tm_hour = hour; |
| 1044 | tm.tm_mday = day; |
| 1045 | tm.tm_mon = month - 1; |
| 1046 | tm.tm_year = year - 1900; |
| 1047 | t = mktime(&tm); |
| 1048 | if (t == (time_t)-1) |
| 1049 | return(0); |
| 1050 | t = time(NULL) - t; |
| 1051 | if ((int)t > arg2) |
| 1052 | return(1); |
| 1053 | } |
| 1054 | return(0); |
| 1055 | } |
| 1056 | |
| 1057 | /* |
| 1058 | * Issue a snapshot. |
| 1059 | */ |
| 1060 | static |
| 1061 | int |
| 1062 | create_snapshot(const char *path, const char *snapshots_path) |
| 1063 | { |
| 1064 | int r; |
| 1065 | |
| 1066 | runcmd(&r, "hammer snapshot %s %s", path, snapshots_path); |
| 1067 | return(r); |
| 1068 | } |
| 1069 | |
| 1070 | static |
| 1071 | int |
| 1072 | cleanup_prune(const char *path, const char *snapshots_path, |
| 1073 | int arg1 __unused, int arg2, int snapshots_disabled) |
| 1074 | { |
| 1075 | const char *path_or_snapshots_path; |
| 1076 | |
| 1077 | /* |
| 1078 | * If the snapshots_path (e.g. /var/hammer/...) has no snapshots |
| 1079 | * in it then prune will get confused and prune the filesystem |
| 1080 | * containing the snapshots_path instead of the requested |
| 1081 | * filesystem. De-confuse prune. We need a better way. |
| 1082 | */ |
| 1083 | if (hammer_softprune_testdir(snapshots_path)) |
| 1084 | path_or_snapshots_path = snapshots_path; |
| 1085 | else |
| 1086 | path_or_snapshots_path = path; |
| 1087 | |
| 1088 | /* |
| 1089 | * If snapshots have been disabled run prune-everything instead |
| 1090 | * of prune. |
| 1091 | */ |
| 1092 | if (snapshots_disabled && arg2) { |
| 1093 | runcmd(NULL, |
| 1094 | "hammer -c %s/.prune.cycle -t %d prune-everything %s", |
| 1095 | snapshots_path, arg2, path); |
| 1096 | } else if (snapshots_disabled) { |
| 1097 | runcmd(NULL, "hammer prune-everything %s", path); |
| 1098 | } else if (arg2) { |
| 1099 | runcmd(NULL, "hammer -c %s/.prune.cycle -t %d prune %s", |
| 1100 | snapshots_path, arg2, path_or_snapshots_path); |
| 1101 | } else { |
| 1102 | runcmd(NULL, "hammer prune %s", path_or_snapshots_path); |
| 1103 | } |
| 1104 | return(0); |
| 1105 | } |
| 1106 | |
| 1107 | static |
| 1108 | int |
| 1109 | cleanup_rebalance(const char *path, const char *snapshots_path, |
| 1110 | int arg1 __unused, int arg2) |
| 1111 | { |
| 1112 | if (VerboseOpt == 0) { |
| 1113 | printf("."); |
| 1114 | fflush(stdout); |
| 1115 | } |
| 1116 | |
| 1117 | runcmd(NULL, |
| 1118 | "hammer -c %s/.rebalance.cycle -t %d rebalance %s", |
| 1119 | snapshots_path, arg2, path); |
| 1120 | if (VerboseOpt == 0) { |
| 1121 | printf("."); |
| 1122 | fflush(stdout); |
| 1123 | } |
| 1124 | if (VerboseOpt == 0) |
| 1125 | printf("\n"); |
| 1126 | return(0); |
| 1127 | } |
| 1128 | |
| 1129 | static |
| 1130 | int |
| 1131 | cleanup_reblock(const char *path, const char *snapshots_path, |
| 1132 | int arg1 __unused, int arg2) |
| 1133 | { |
| 1134 | if (VerboseOpt == 0) { |
| 1135 | printf("."); |
| 1136 | fflush(stdout); |
| 1137 | } |
| 1138 | |
| 1139 | /* |
| 1140 | * When reblocking the B-Tree always reblock everything in normal |
| 1141 | * mode. |
| 1142 | */ |
| 1143 | runcmd(NULL, |
| 1144 | "hammer -c %s/.reblock-1.cycle -t %d reblock-btree %s", |
| 1145 | snapshots_path, arg2, path); |
| 1146 | if (VerboseOpt == 0) { |
| 1147 | printf("."); |
| 1148 | fflush(stdout); |
| 1149 | } |
| 1150 | |
| 1151 | /* |
| 1152 | * When reblocking the inodes always reblock everything in normal |
| 1153 | * mode. |
| 1154 | */ |
| 1155 | runcmd(NULL, |
| 1156 | "hammer -c %s/.reblock-2.cycle -t %d reblock-inodes %s", |
| 1157 | snapshots_path, arg2, path); |
| 1158 | if (VerboseOpt == 0) { |
| 1159 | printf("."); |
| 1160 | fflush(stdout); |
| 1161 | } |
| 1162 | |
| 1163 | /* |
| 1164 | * When reblocking the directories always reblock everything in normal |
| 1165 | * mode. |
| 1166 | */ |
| 1167 | runcmd(NULL, |
| 1168 | "hammer -c %s/.reblock-4.cycle -t %d reblock-dirs %s", |
| 1169 | snapshots_path, arg2, path); |
| 1170 | if (VerboseOpt == 0) { |
| 1171 | printf("."); |
| 1172 | fflush(stdout); |
| 1173 | } |
| 1174 | |
| 1175 | /* |
| 1176 | * Do not reblock all the data in normal mode. |
| 1177 | */ |
| 1178 | runcmd(NULL, |
| 1179 | "hammer -c %s/.reblock-3.cycle -t %d reblock-data %s 95", |
| 1180 | snapshots_path, arg2, path); |
| 1181 | if (VerboseOpt == 0) |
| 1182 | printf("\n"); |
| 1183 | return(0); |
| 1184 | } |
| 1185 | |
| 1186 | static |
| 1187 | int |
| 1188 | cleanup_recopy(const char *path, const char *snapshots_path, |
| 1189 | int arg1 __unused, int arg2) |
| 1190 | { |
| 1191 | if (VerboseOpt == 0) { |
| 1192 | printf("."); |
| 1193 | fflush(stdout); |
| 1194 | } |
| 1195 | runcmd(NULL, |
| 1196 | "hammer -c %s/.recopy-1.cycle -t %d reblock-btree %s", |
| 1197 | snapshots_path, arg2, path); |
| 1198 | if (VerboseOpt == 0) { |
| 1199 | printf("."); |
| 1200 | fflush(stdout); |
| 1201 | } |
| 1202 | runcmd(NULL, |
| 1203 | "hammer -c %s/.recopy-2.cycle -t %d reblock-inodes %s", |
| 1204 | snapshots_path, arg2, path); |
| 1205 | if (VerboseOpt == 0) { |
| 1206 | printf("."); |
| 1207 | fflush(stdout); |
| 1208 | } |
| 1209 | runcmd(NULL, |
| 1210 | "hammer -c %s/.recopy-4.cycle -t %d reblock-dirs %s", |
| 1211 | snapshots_path, arg2, path); |
| 1212 | if (VerboseOpt == 0) { |
| 1213 | printf("."); |
| 1214 | fflush(stdout); |
| 1215 | } |
| 1216 | runcmd(NULL, |
| 1217 | "hammer -c %s/.recopy-3.cycle -t %d reblock-data %s", |
| 1218 | snapshots_path, arg2, path); |
| 1219 | if (VerboseOpt == 0) |
| 1220 | printf("\n"); |
| 1221 | return(0); |
| 1222 | } |
| 1223 | |
| 1224 | static |
| 1225 | int |
| 1226 | cleanup_dedup(const char *path, const char *snapshots_path __unused, |
| 1227 | int arg1 __unused, int arg2) |
| 1228 | { |
| 1229 | if (VerboseOpt == 0) { |
| 1230 | printf("."); |
| 1231 | fflush(stdout); |
| 1232 | } |
| 1233 | |
| 1234 | runcmd(NULL, "hammer -t %d dedup %s", arg2, path); |
| 1235 | if (VerboseOpt == 0) { |
| 1236 | printf("."); |
| 1237 | fflush(stdout); |
| 1238 | } |
| 1239 | if (VerboseOpt == 0) |
| 1240 | printf("\n"); |
| 1241 | return(0); |
| 1242 | } |
| 1243 | |
| 1244 | static |
| 1245 | void |
| 1246 | runcmd(int *resp, const char *ctl, ...) |
| 1247 | { |
| 1248 | va_list va; |
| 1249 | char *cmd; |
| 1250 | char *arg; |
| 1251 | char **av; |
| 1252 | int n; |
| 1253 | int nmax; |
| 1254 | int res; |
| 1255 | pid_t pid; |
| 1256 | |
| 1257 | /* |
| 1258 | * Generate the command |
| 1259 | */ |
| 1260 | va_start(va, ctl); |
| 1261 | vasprintf(&cmd, ctl, va); |
| 1262 | va_end(va); |
| 1263 | if (VerboseOpt) |
| 1264 | printf(" %s\n", cmd); |
| 1265 | |
| 1266 | /* |
| 1267 | * Break us down into arguments. We do not just use system() here |
| 1268 | * because it blocks SIGINT and friends. |
| 1269 | */ |
| 1270 | n = 0; |
| 1271 | nmax = 16; |
| 1272 | av = malloc(sizeof(char *) * nmax); |
| 1273 | |
| 1274 | for (arg = strtok(cmd, WS); arg; arg = strtok(NULL, WS)) { |
| 1275 | if (n == nmax - 1) { |
| 1276 | nmax += 16; |
| 1277 | av = realloc(av, sizeof(char *) * nmax); |
| 1278 | } |
| 1279 | av[n++] = arg; |
| 1280 | } |
| 1281 | av[n++] = NULL; |
| 1282 | |
| 1283 | /* |
| 1284 | * Run the command. |
| 1285 | */ |
| 1286 | RunningIoctl = 1; |
| 1287 | if ((pid = fork()) == 0) { |
| 1288 | if (VerboseOpt < 2) { |
| 1289 | int fd = open("/dev/null", O_RDWR); |
| 1290 | dup2(fd, 1); |
| 1291 | close(fd); |
| 1292 | } |
| 1293 | execvp(av[0], av); |
| 1294 | _exit(127); |
| 1295 | } else if (pid < 0) { |
| 1296 | res = 127; |
| 1297 | } else { |
| 1298 | int status; |
| 1299 | |
| 1300 | while (waitpid(pid, &status, 0) != pid) |
| 1301 | ; |
| 1302 | res = WEXITSTATUS(status); |
| 1303 | } |
| 1304 | RunningIoctl = 0; |
| 1305 | if (DidInterrupt) |
| 1306 | _exit(1); |
| 1307 | |
| 1308 | free(cmd); |
| 1309 | free(av); |
| 1310 | if (resp) |
| 1311 | *resp = res; |
| 1312 | } |