1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> 5 * All rights reserved. 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 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: stable/11/sbin/geom/class/raid3/geom_raid3.c 330726 2018-03-10 02:15:45Z asomers $"); 31 32#include <sys/param.h> 33#include <errno.h> 34#include <paths.h> 35#include <stdio.h> 36#include <stdlib.h> 37#include <stdint.h> 38#include <string.h> 39#include <strings.h> 40#include <assert.h> 41#include <libgeom.h> 42#include <geom/raid3/g_raid3.h> 43#include <core/geom.h> 44#include <misc/subr.h> 45 46 47uint32_t lib_version = G_LIB_VERSION; 48uint32_t version = G_RAID3_VERSION; 49 50static void raid3_main(struct gctl_req *req, unsigned f); 51static void raid3_clear(struct gctl_req *req); 52static void raid3_dump(struct gctl_req *req); 53static void raid3_label(struct gctl_req *req); 54 55struct g_command class_commands[] = { 56 { "clear", G_FLAG_VERBOSE, raid3_main, G_NULL_OPTS, 57 "[-v] prov ..." 58 }, 59 { "configure", G_FLAG_VERBOSE, NULL, 60 { 61 { 'a', "autosync", NULL, G_TYPE_BOOL }, 62 { 'd', "dynamic", NULL, G_TYPE_BOOL }, 63 { 'f', "failsync", NULL, G_TYPE_BOOL }, 64 { 'F', "nofailsync", NULL, G_TYPE_BOOL }, 65 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 66 { 'n', "noautosync", NULL, G_TYPE_BOOL }, 67 { 'r', "round_robin", NULL, G_TYPE_BOOL }, 68 { 'R', "noround_robin", NULL, G_TYPE_BOOL }, 69 { 'w', "verify", NULL, G_TYPE_BOOL }, 70 { 'W', "noverify", NULL, G_TYPE_BOOL }, 71 G_OPT_SENTINEL 72 }, 73 "[-adfFhnrRvwW] name" 74 }, 75 { "dump", 0, raid3_main, G_NULL_OPTS, 76 "prov ..." 77 }, 78 { "insert", G_FLAG_VERBOSE, NULL, 79 { 80 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 81 { 'n', "number", G_VAL_OPTIONAL, G_TYPE_NUMBER }, 82 G_OPT_SENTINEL 83 }, 84 "[-hv] <-n number> name prov" 85 }, 86 { "label", G_FLAG_VERBOSE, raid3_main, 87 { 88 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 89 { 'F', "nofailsync", NULL, G_TYPE_BOOL }, 90 { 'n', "noautosync", NULL, G_TYPE_BOOL }, 91 { 'r', "round_robin", NULL, G_TYPE_BOOL }, 92 { 's', "sectorsize", "0", G_TYPE_NUMBER }, 93 { 'w', "verify", NULL, G_TYPE_BOOL }, 94 G_OPT_SENTINEL 95 }, 96 "[-hFnrvw] [-s blocksize] name prov prov prov ..." 97 }, 98 { "rebuild", G_FLAG_VERBOSE, NULL, G_NULL_OPTS, 99 "[-v] name prov" 100 }, 101 { "remove", G_FLAG_VERBOSE, NULL, 102 { 103 { 'n', "number", NULL, G_TYPE_NUMBER }, 104 G_OPT_SENTINEL 105 }, 106 "[-v] <-n number> name" 107 }, 108 { "stop", G_FLAG_VERBOSE, NULL, 109 { 110 { 'f', "force", NULL, G_TYPE_BOOL }, 111 G_OPT_SENTINEL 112 }, 113 "[-fv] name ..." 114 }, 115 G_CMD_SENTINEL 116}; 117 118static int verbose = 0; 119 120static void 121raid3_main(struct gctl_req *req, unsigned flags) 122{ 123 const char *name; 124 125 if ((flags & G_FLAG_VERBOSE) != 0) 126 verbose = 1; 127 128 name = gctl_get_ascii(req, "verb"); 129 if (name == NULL) { 130 gctl_error(req, "No '%s' argument.", "verb"); 131 return; 132 } 133 if (strcmp(name, "label") == 0) 134 raid3_label(req); 135 else if (strcmp(name, "clear") == 0) 136 raid3_clear(req); 137 else if (strcmp(name, "dump") == 0) 138 raid3_dump(req); 139 else 140 gctl_error(req, "Unknown command: %s.", name); 141} 142 143static void 144raid3_label(struct gctl_req *req) 145{ 146 struct g_raid3_metadata md; 147 u_char sector[512]; 148 const char *str; 149 unsigned sectorsize, ssize; 150 off_t mediasize, msize; 151 int hardcode, round_robin, verify; 152 int error, i, nargs; 153 154 bzero(sector, sizeof(sector)); 155 nargs = gctl_get_int(req, "nargs"); 156 if (nargs < 4) { 157 gctl_error(req, "Too few arguments."); 158 return; 159 } 160 if (bitcount32(nargs - 2) != 1) { 161 gctl_error(req, "Invalid number of components."); 162 return; 163 } 164 165 strlcpy(md.md_magic, G_RAID3_MAGIC, sizeof(md.md_magic)); 166 md.md_version = G_RAID3_VERSION; 167 str = gctl_get_ascii(req, "arg0"); 168 strlcpy(md.md_name, str, sizeof(md.md_name)); 169 md.md_id = arc4random(); 170 md.md_all = nargs - 1; 171 md.md_mflags = 0; 172 md.md_dflags = 0; 173 md.md_genid = 0; 174 md.md_syncid = 1; 175 md.md_sync_offset = 0; 176 if (gctl_get_int(req, "noautosync")) 177 md.md_mflags |= G_RAID3_DEVICE_FLAG_NOAUTOSYNC; 178 if (gctl_get_int(req, "nofailsync")) 179 md.md_mflags |= G_RAID3_DEVICE_FLAG_NOFAILSYNC; 180 round_robin = gctl_get_int(req, "round_robin"); 181 if (round_robin) 182 md.md_mflags |= G_RAID3_DEVICE_FLAG_ROUND_ROBIN; 183 verify = gctl_get_int(req, "verify"); 184 if (verify) 185 md.md_mflags |= G_RAID3_DEVICE_FLAG_VERIFY; 186 if (round_robin && verify) { 187 gctl_error(req, "Both '%c' and '%c' options given.", 'r', 'w'); 188 return; 189 } 190 hardcode = gctl_get_int(req, "hardcode"); 191 192 /* 193 * Calculate sectorsize by finding least common multiple from 194 * sectorsizes of every disk and find the smallest mediasize. 195 */ 196 mediasize = 0; 197 sectorsize = gctl_get_intmax(req, "sectorsize"); 198 for (i = 1; i < nargs; i++) { 199 str = gctl_get_ascii(req, "arg%d", i); 200 msize = g_get_mediasize(str); 201 ssize = g_get_sectorsize(str); 202 if (msize == 0 || ssize == 0) { 203 gctl_error(req, "Can't get informations about %s: %s.", 204 str, strerror(errno)); 205 return; 206 } 207 msize -= ssize; 208 if (mediasize == 0 || (mediasize > 0 && msize < mediasize)) 209 mediasize = msize; 210 if (sectorsize == 0) 211 sectorsize = ssize; 212 else 213 sectorsize = g_lcm(sectorsize, ssize); 214 } 215 md.md_mediasize = mediasize * (nargs - 2); 216 md.md_sectorsize = sectorsize * (nargs - 2); 217 md.md_mediasize -= (md.md_mediasize % md.md_sectorsize); 218 219 if (md.md_sectorsize > MAXPHYS) { 220 gctl_error(req, "The blocksize is too big."); 221 return; 222 } 223 224 /* 225 * Clear last sector first, to spoil all components if device exists. 226 */ 227 for (i = 1; i < nargs; i++) { 228 str = gctl_get_ascii(req, "arg%d", i); 229 error = g_metadata_clear(str, NULL); 230 if (error != 0) { 231 gctl_error(req, "Can't store metadata on %s: %s.", str, 232 strerror(error)); 233 return; 234 } 235 } 236 237 /* 238 * Ok, store metadata (use disk number as priority). 239 */ 240 for (i = 1; i < nargs; i++) { 241 str = gctl_get_ascii(req, "arg%d", i); 242 msize = g_get_mediasize(str); 243 ssize = g_get_sectorsize(str); 244 if (mediasize < msize - ssize) { 245 fprintf(stderr, 246 "warning: %s: only %jd bytes from %jd bytes used.\n", 247 str, (intmax_t)mediasize, (intmax_t)(msize - ssize)); 248 } 249 250 md.md_no = i - 1; 251 md.md_provsize = msize; 252 if (!hardcode) 253 bzero(md.md_provider, sizeof(md.md_provider)); 254 else { 255 if (strncmp(str, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 256 str += sizeof(_PATH_DEV) - 1; 257 strlcpy(md.md_provider, str, sizeof(md.md_provider)); 258 } 259 if (verify && md.md_no == md.md_all - 1) { 260 /* 261 * In "verify" mode, force synchronization of parity 262 * component on start. 263 */ 264 md.md_syncid = 0; 265 } 266 raid3_metadata_encode(&md, sector); 267 error = g_metadata_store(str, sector, sizeof(sector)); 268 if (error != 0) { 269 fprintf(stderr, "Can't store metadata on %s: %s.\n", 270 str, strerror(error)); 271 gctl_error(req, "Not fully done."); 272 continue; 273 } 274 if (verbose) 275 printf("Metadata value stored on %s.\n", str); 276 } 277} 278 279static void 280raid3_clear(struct gctl_req *req) 281{ 282 const char *name; 283 int error, i, nargs; 284 285 nargs = gctl_get_int(req, "nargs"); 286 if (nargs < 1) { 287 gctl_error(req, "Too few arguments."); 288 return; 289 } 290 291 for (i = 0; i < nargs; i++) { 292 name = gctl_get_ascii(req, "arg%d", i); 293 error = g_metadata_clear(name, G_RAID3_MAGIC); 294 if (error != 0) { 295 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 296 name, strerror(error)); 297 gctl_error(req, "Not fully done."); 298 continue; 299 } 300 if (verbose) 301 printf("Metadata cleared on %s.\n", name); 302 } 303} 304 305static void 306raid3_dump(struct gctl_req *req) 307{ 308 struct g_raid3_metadata md, tmpmd; 309 const char *name; 310 int error, i, nargs; 311 312 nargs = gctl_get_int(req, "nargs"); 313 if (nargs < 1) { 314 gctl_error(req, "Too few arguments."); 315 return; 316 } 317 318 for (i = 0; i < nargs; i++) { 319 name = gctl_get_ascii(req, "arg%d", i); 320 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 321 G_RAID3_MAGIC); 322 if (error != 0) { 323 fprintf(stderr, "Can't read metadata from %s: %s.\n", 324 name, strerror(error)); 325 gctl_error(req, "Not fully done."); 326 continue; 327 } 328 if (raid3_metadata_decode((u_char *)&tmpmd, &md) != 0) { 329 fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n", 330 name); 331 gctl_error(req, "Not fully done."); 332 continue; 333 } 334 printf("Metadata on %s:\n", name); 335 raid3_metadata_dump(&md); 336 printf("\n"); 337 } 338} 339