geom_raid3.c revision 134168
1108983Simp/*- 2108983Simp * Copyright (c) 2004 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3108983Simp * All rights reserved. 4108983Simp * 5108983Simp * Redistribution and use in source and binary forms, with or without 6108983Simp * modification, are permitted provided that the following conditions 7108983Simp * are met: 8108983Simp * 1. Redistributions of source code must retain the above copyright 9108983Simp * notice, this list of conditions and the following disclaimer. 10108983Simp * 2. Redistributions in binary form must reproduce the above copyright 11108983Simp * notice, this list of conditions and the following disclaimer in the 12108983Simp * documentation and/or other materials provided with the distribution. 13108983Simp * 14108983Simp * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15108983Simp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16108983Simp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17108983Simp * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18108983Simp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19108983Simp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20148471Simp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21108983Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22139027Sbrueffer * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23146969Smarius * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24139027Sbrueffer * SUCH DAMAGE. 25108983Simp */ 26108983Simp 27108983Simp#include <sys/cdefs.h> 28108983Simp__FBSDID("$FreeBSD: head/sbin/geom/class/raid3/geom_raid3.c 134168 2004-08-22 16:21:12Z pjd $"); 29108983Simp 30108983Simp#include <sys/param.h> 31159126Sthompsa#include <errno.h> 32159126Sthompsa#include <paths.h> 33108983Simp#include <stdio.h> 34159126Sthompsa#include <stdlib.h> 35159126Sthompsa#include <stdint.h> 36159126Sthompsa#include <string.h> 37159126Sthompsa#include <strings.h> 38108983Simp#include <assert.h> 39108983Simp#include <libgeom.h> 40159126Sthompsa#include <geom/raid3/g_raid3.h> 41159126Sthompsa#include <core/geom.h> 42159126Sthompsa#include <misc/subr.h> 43159126Sthompsa 44108983Simp 45108983Simpuint32_t lib_version = G_LIB_VERSION; 46147088Sbrooksuint32_t version = G_RAID3_VERSION; 47147088Sbrooks 48147088Sbrooksstatic void raid3_main(struct gctl_req *req, unsigned f); 49147088Sbrooksstatic void raid3_clear(struct gctl_req *req); 50147088Sbrooksstatic void raid3_dump(struct gctl_req *req); 51147088Sbrooksstatic void raid3_label(struct gctl_req *req); 52147088Sbrooks 53147088Sbrooksstruct g_command class_commands[] = { 54147088Sbrooks { "clear", G_FLAG_VERBOSE, raid3_main, G_NULL_OPTS }, 55148642Ssam { "configure", G_FLAG_VERBOSE, NULL, 56175683Smtm { 57147088Sbrooks { 'a', "autosync", NULL, G_TYPE_NONE }, 58147088Sbrooks { 'd', "dynamic", NULL, G_TYPE_NONE }, 59148642Ssam { 'h', "hardcode", NULL, G_TYPE_NONE }, 60148642Ssam { 'n', "noautosync", NULL, G_TYPE_NONE }, 61148642Ssam { 'r', "round_robin", NULL, G_TYPE_NONE }, 62148642Ssam { 'R', "noround_robin", NULL, G_TYPE_NONE }, 63148642Ssam { 'w', "verify", NULL, G_TYPE_NONE }, 64148642Ssam { 'W', "noverify", NULL, G_TYPE_NONE }, 65148642Ssam G_OPT_SENTINEL 66148642Ssam } 67148642Ssam }, 68148642Ssam { "dump", 0, raid3_main, G_NULL_OPTS }, 69148642Ssam { "insert", G_FLAG_VERBOSE, NULL, 70148642Ssam { 71148642Ssam { 'h', "hardcode", NULL, G_TYPE_NONE }, 72148642Ssam { 'n', "number", NULL, G_TYPE_NUMBER }, 73148642Ssam G_OPT_SENTINEL 74148642Ssam } 75148642Ssam }, 76175683Smtm { "label", G_FLAG_VERBOSE, raid3_main, 77148642Ssam { 78148642Ssam { 'h', "hardcode", NULL, G_TYPE_NONE }, 79108983Simp { 'n', "noautosync", NULL, G_TYPE_NONE }, 80108983Simp { 'r', "round_robin", NULL, G_TYPE_NONE }, 81108983Simp { 'w', "verify", NULL, G_TYPE_NONE }, 82139281Sbrueffer G_OPT_SENTINEL 83108983Simp } 84108983Simp }, 85108983Simp { "rebuild", G_FLAG_VERBOSE, NULL, G_NULL_OPTS }, 86108983Simp { "remove", G_FLAG_VERBOSE, NULL, 87108983Simp { 88108983Simp { 'n', "number", NULL, G_TYPE_NUMBER }, 89108983Simp G_OPT_SENTINEL 90108983Simp } 91152326Semax }, 92152326Semax { "stop", G_FLAG_VERBOSE, NULL, 93152326Semax { 94175683Smtm { 'f', "force", NULL, G_TYPE_NONE }, 95152326Semax G_OPT_SENTINEL 96152326Semax } 97152326Semax }, 98175683Smtm G_CMD_SENTINEL 99152326Semax}; 100152326Semax 101139281Sbruefferstatic int verbose = 0; 102134584Sbrooks 103134584Sbrooksvoid usage(const char *); 104156782Semaxvoid 105134584Sbrooksusage(const char *comm) 106134584Sbrooks{ 107134584Sbrooks fprintf(stderr, 108156331Semax "usage: %s label [-hnrvw] name prov prov prov [prov [...]]\n" 109134584Sbrooks " %s clear [-v] prov [prov [...]]\n" 110134584Sbrooks " %s dump prov [prov [...]]\n" 111138175Siedowse " %s configure [-adhnrRvwW] name\n" 112138175Siedowse " %s rebuild [-v] name prov\n" 113138175Siedowse " %s insert [-hv] <-n number> name prov\n" 114138175Siedowse " %s remove [-v] <-n number> name\n" 115175683Smtm " %s stop [-fv] name [...]\n", 116138175Siedowse comm, comm, comm, comm, comm, comm, comm, comm); 117138175Siedowse exit(EXIT_FAILURE); 118179804Skmacy} 119179804Skmacy 120179804Skmacystatic void 121179804Skmacyraid3_main(struct gctl_req *req, unsigned flags) 122179804Skmacy{ 123153300Siedowse const char *name; 124153300Siedowse 125153300Siedowse if ((flags & G_FLAG_VERBOSE) != 0) 126153300Siedowse verbose = 1; 127153300Siedowse 128153300Siedowse name = gctl_get_asciiparam(req, "verb"); 129153300Siedowse if (name == NULL) { 130153300Siedowse gctl_error(req, "No '%s' argument.", "verb"); 131153300Siedowse return; 132153300Siedowse } 133153300Siedowse if (strcmp(name, "label") == 0) 134153300Siedowse raid3_label(req); 135153300Siedowse else if (strcmp(name, "clear") == 0) 136153300Siedowse raid3_clear(req); 137153300Siedowse else if (strcmp(name, "dump") == 0) 138153300Siedowse raid3_dump(req); 139153300Siedowse else 140153300Siedowse gctl_error(req, "Unknown command: %s.", name); 141153300Siedowse} 142153300Siedowse 143153300Siedowsestatic void 144153300Siedowseraid3_label(struct gctl_req *req) 145153300Siedowse{ 146153300Siedowse struct g_raid3_metadata md; 147153300Siedowse u_char sector[512]; 148153300Siedowse const char *str; 149153300Siedowse char param[16]; 150153300Siedowse int *hardcode, *nargs, *noautosync, *round_robin, *verify; 151153300Siedowse int error, i; 152108983Simp unsigned sectorsize; 153148471Simp off_t mediasize; 154148471Simp 155108983Simp nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 156108983Simp if (nargs == NULL) { 157108983Simp gctl_error(req, "No '%s' argument.", "nargs"); 158131646Simp return; 159108983Simp } 160108983Simp if (*nargs < 4) { 161108983Simp gctl_error(req, "Too few arguments."); 162114799Simp return; 163166754Simp } 164166754Simp#ifndef BITCOUNT 165119254Simp#define BITCOUNT(x) (((BX_(x) + (BX_(x) >> 4)) & 0x0F0F0F0F) % 255) 166114852Simp#define BX_(x) ((x) - (((x) >> 1) & 0x77777777) - \ 167119254Simp (((x) >> 2) & 0x33333333) - (((x) >> 3) & 0x11111111)) 168108983Simp#endif 169166701Sjoerg if (BITCOUNT(*nargs - 2) != 1) { 170166701Sjoerg gctl_error(req, "Invalid number of components."); 171166701Sjoerg return; 172166701Sjoerg } 173166701Sjoerg 174166701Sjoerg strlcpy(md.md_magic, G_RAID3_MAGIC, sizeof(md.md_magic)); 175166701Sjoerg md.md_version = G_RAID3_VERSION; 176166701Sjoerg str = gctl_get_asciiparam(req, "arg0"); 177166701Sjoerg if (str == NULL) { 178166701Sjoerg gctl_error(req, "No 'arg%u' argument.", 0); 179166701Sjoerg return; 180166701Sjoerg } 181166701Sjoerg strlcpy(md.md_name, str, sizeof(md.md_name)); 182166701Sjoerg md.md_all = *nargs - 1; 183166701Sjoerg md.md_mflags = 0; 184166701Sjoerg md.md_dflags = 0; 185166701Sjoerg md.md_syncid = 1; 186166701Sjoerg md.md_sync_offset = 0; 187166701Sjoerg noautosync = gctl_get_paraml(req, "noautosync", sizeof(*noautosync)); 188166701Sjoerg if (noautosync == NULL) { 189166701Sjoerg gctl_error(req, "No '%s' argument.", "noautosync"); 190166701Sjoerg return; 191166701Sjoerg } 192166701Sjoerg if (*noautosync) 193166701Sjoerg md.md_mflags |= G_RAID3_DEVICE_FLAG_NOAUTOSYNC; 194166701Sjoerg round_robin = gctl_get_paraml(req, "round_robin", sizeof(*round_robin)); 195166701Sjoerg if (round_robin == NULL) { 196166701Sjoerg gctl_error(req, "No '%s' argument.", "round_robin"); 197166701Sjoerg return; 198166701Sjoerg } 199139281Sbrueffer if (*round_robin) 200123626Snjl md.md_mflags |= G_RAID3_DEVICE_FLAG_ROUND_ROBIN; 201123626Snjl verify = gctl_get_paraml(req, "verify", sizeof(*verify)); 202123626Snjl if (verify == NULL) { 203125366Snjl gctl_error(req, "No '%s' argument.", "verify"); 204123626Snjl return; 205123626Snjl } 206125366Snjl if (*verify) 207125366Snjl md.md_mflags |= G_RAID3_DEVICE_FLAG_VERIFY; 208125366Snjl if (*round_robin && *verify) { 209125366Snjl gctl_error(req, "Both '%c' and '%c' options given.", 'r', 'w'); 210125366Snjl return; 211125366Snjl } 212125366Snjl hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode)); 213125366Snjl if (hardcode == NULL) { 214125366Snjl gctl_error(req, "No '%s' argument.", "hardcode"); 215125366Snjl return; 216168495Spjd } 217168495Spjd 218168495Spjd /* 219168495Spjd * Calculate sectorsize by finding least common multiple from 220168495Spjd * sectorsizes of every disk and find the smallest mediasize. 221168495Spjd */ 222168495Spjd mediasize = 0; 223168495Spjd sectorsize = 0; 224168495Spjd for (i = 1; i < *nargs; i++) { 225168495Spjd unsigned ssize; 226168497Spjd off_t msize; 227168495Spjd 228168495Spjd snprintf(param, sizeof(param), "arg%u", i); 229168495Spjd str = gctl_get_asciiparam(req, param); 230168495Spjd 231168495Spjd msize = g_get_mediasize(str); 232168495Spjd ssize = g_get_sectorsize(str); 233168495Spjd if (msize == 0 || ssize == 0) { 234168495Spjd gctl_error(req, "Can't get informations about %s: %s.", 235168495Spjd str, strerror(errno)); 236168495Spjd return; 237168495Spjd } 238168495Spjd msize -= ssize; 239168495Spjd if (mediasize == 0 || (mediasize > 0 && msize < mediasize)) 240168495Spjd mediasize = msize; 241168495Spjd if (sectorsize == 0) 242168495Spjd sectorsize = ssize; 243168495Spjd else 244168495Spjd sectorsize = g_lcm(sectorsize, ssize); 245168495Spjd } 246168495Spjd md.md_mediasize = mediasize * (*nargs - 2); 247170976Snjl md.md_sectorsize = sectorsize * (*nargs - 2); 248170976Snjl 249170976Snjl /* 250170976Snjl * Clear last sector first, to spoil all components if device exists. 251170976Snjl */ 252170976Snjl for (i = 1; i < *nargs; i++) { 253170976Snjl snprintf(param, sizeof(param), "arg%u", i); 254170976Snjl str = gctl_get_asciiparam(req, param); 255170976Snjl 256170976Snjl error = g_metadata_clear(str, NULL); 257170976Snjl if (error != 0) { 258170976Snjl gctl_error(req, "Can't store metadata on %s: %s.", str, 259170976Snjl strerror(error)); 260108983Simp return; 261108983Simp } 262108983Simp } 263108983Simp 264108983Simp /* 265108983Simp * Ok, store metadata (use disk number as priority). 266108983Simp */ 267108983Simp for (i = 1; i < *nargs; i++) { 268108983Simp snprintf(param, sizeof(param), "arg%u", i); 269108983Simp str = gctl_get_asciiparam(req, param); 270108983Simp 271108983Simp md.md_no = i - 1; 272108983Simp if (!*hardcode) 273108983Simp bzero(md.md_provider, sizeof(md.md_provider)); 274108983Simp else { 275108983Simp if (strncmp(str, _PATH_DEV, strlen(_PATH_DEV)) == 0) 276108983Simp str += strlen(_PATH_DEV); 277108983Simp strlcpy(md.md_provider, str, sizeof(md.md_provider)); 278108983Simp } 279108983Simp raid3_metadata_encode(&md, sector); 280108983Simp error = g_metadata_store(str, sector, sizeof(sector)); 281108983Simp if (error != 0) { 282108983Simp fprintf(stderr, "Can't store metadata on %s: %s.\n", 283121493Snjl str, strerror(error)); 284121493Snjl gctl_error(req, "Not fully done."); 285121493Snjl continue; 286121493Snjl } 287121493Snjl if (verbose) 288121493Snjl printf("Metadata value stored on %s.\n", str); 289121493Snjl } 290121493Snjl} 291121493Snjl 292121493Snjlstatic void 293121493Snjlraid3_clear(struct gctl_req *req) 294121493Snjl{ 295121493Snjl const char *name; 296121493Snjl char param[16]; 297121493Snjl int *nargs, error, i; 298170976Snjl 299121493Snjl nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 300121493Snjl if (nargs == NULL) { 301121493Snjl gctl_error(req, "No '%s' argument.", "nargs"); 302121493Snjl return; 303121493Snjl } 304121493Snjl if (*nargs < 1) { 305121493Snjl gctl_error(req, "Too few arguments."); 306121493Snjl return; 307121493Snjl } 308121493Snjl 309121493Snjl for (i = 0; i < *nargs; i++) { 310108983Simp snprintf(param, sizeof(param), "arg%u", i); 311 name = gctl_get_asciiparam(req, param); 312 313 error = g_metadata_clear(name, G_RAID3_MAGIC); 314 if (error != 0) { 315 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 316 name, strerror(error)); 317 gctl_error(req, "Not fully done."); 318 continue; 319 } 320 if (verbose) 321 printf("Metadata cleared on %s.\n", name); 322 } 323} 324 325static void 326raid3_dump(struct gctl_req *req) 327{ 328 struct g_raid3_metadata md, tmpmd; 329 const char *name; 330 char param[16]; 331 int *nargs, error, i; 332 333 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 334 if (nargs == NULL) { 335 gctl_error(req, "No '%s' argument.", "nargs"); 336 return; 337 } 338 if (*nargs < 1) { 339 gctl_error(req, "Too few arguments."); 340 return; 341 } 342 343 for (i = 0; i < *nargs; i++) { 344 snprintf(param, sizeof(param), "arg%u", i); 345 name = gctl_get_asciiparam(req, param); 346 347 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 348 G_RAID3_MAGIC); 349 if (error != 0) { 350 fprintf(stderr, "Can't read metadata from %s: %s.\n", 351 name, strerror(error)); 352 gctl_error(req, "Not fully done."); 353 continue; 354 } 355 if (raid3_metadata_decode((u_char *)&tmpmd, &md) != 0) { 356 fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n", 357 name); 358 gctl_error(req, "Not fully done."); 359 continue; 360 } 361 printf("Metadata on %s:\n", name); 362 raid3_metadata_dump(&md); 363 printf("\n"); 364 } 365} 366