1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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/param.h> 30 #include <errno.h> 31 #include <paths.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <stdint.h> 35 #include <string.h> 36 #include <strings.h> 37 #include <assert.h> 38 #include <libgeom.h> 39 #include <geom/raid3/g_raid3.h> 40 #include <core/geom.h> 41 #include <misc/subr.h> 42 43 44 uint32_t lib_version = G_LIB_VERSION; 45 uint32_t version = G_RAID3_VERSION; 46 47 static void raid3_main(struct gctl_req *req, unsigned f); 48 static void raid3_clear(struct gctl_req *req); 49 static void raid3_dump(struct gctl_req *req); 50 static void raid3_label(struct gctl_req *req); 51 52 struct g_command class_commands[] = { 53 { "clear", G_FLAG_VERBOSE, raid3_main, G_NULL_OPTS, 54 "[-v] prov ..." 55 }, 56 { "configure", G_FLAG_VERBOSE, NULL, 57 { 58 { 'a', "autosync", NULL, G_TYPE_BOOL }, 59 { 'd', "dynamic", NULL, G_TYPE_BOOL }, 60 { 'f', "failsync", NULL, G_TYPE_BOOL }, 61 { 'F', "nofailsync", NULL, G_TYPE_BOOL }, 62 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 63 { 'n', "noautosync", NULL, G_TYPE_BOOL }, 64 { 'r', "round_robin", NULL, G_TYPE_BOOL }, 65 { 'R', "noround_robin", NULL, G_TYPE_BOOL }, 66 { 'w', "verify", NULL, G_TYPE_BOOL }, 67 { 'W', "noverify", NULL, G_TYPE_BOOL }, 68 G_OPT_SENTINEL 69 }, 70 "[-adfFhnrRvwW] name" 71 }, 72 { "dump", 0, raid3_main, G_NULL_OPTS, 73 "prov ..." 74 }, 75 { "insert", G_FLAG_VERBOSE, NULL, 76 { 77 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 78 { 'n', "number", G_VAL_OPTIONAL, G_TYPE_NUMBER }, 79 G_OPT_SENTINEL 80 }, 81 "[-hv] <-n number> name prov" 82 }, 83 { "label", G_FLAG_VERBOSE, raid3_main, 84 { 85 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 86 { 'F', "nofailsync", NULL, G_TYPE_BOOL }, 87 { 'n', "noautosync", NULL, G_TYPE_BOOL }, 88 { 'r', "round_robin", NULL, G_TYPE_BOOL }, 89 { 's', "sectorsize", "0", G_TYPE_NUMBER }, 90 { 'w', "verify", NULL, G_TYPE_BOOL }, 91 G_OPT_SENTINEL 92 }, 93 "[-hFnrvw] [-s blocksize] name prov prov prov ..." 94 }, 95 { "rebuild", G_FLAG_VERBOSE, NULL, G_NULL_OPTS, 96 "[-v] name prov" 97 }, 98 { "remove", G_FLAG_VERBOSE, NULL, 99 { 100 { 'n', "number", NULL, G_TYPE_NUMBER }, 101 G_OPT_SENTINEL 102 }, 103 "[-v] <-n number> name" 104 }, 105 { "stop", G_FLAG_VERBOSE, NULL, 106 { 107 { 'f', "force", NULL, G_TYPE_BOOL }, 108 G_OPT_SENTINEL 109 }, 110 "[-fv] name ..." 111 }, 112 G_CMD_SENTINEL 113 }; 114 115 static int verbose = 0; 116 117 static void 118 raid3_main(struct gctl_req *req, unsigned flags) 119 { 120 const char *name; 121 122 if ((flags & G_FLAG_VERBOSE) != 0) 123 verbose = 1; 124 125 name = gctl_get_ascii(req, "verb"); 126 if (name == NULL) { 127 gctl_error(req, "No '%s' argument.", "verb"); 128 return; 129 } 130 if (strcmp(name, "label") == 0) 131 raid3_label(req); 132 else if (strcmp(name, "clear") == 0) 133 raid3_clear(req); 134 else if (strcmp(name, "dump") == 0) 135 raid3_dump(req); 136 else 137 gctl_error(req, "Unknown command: %s.", name); 138 } 139 140 static void 141 raid3_label(struct gctl_req *req) 142 { 143 struct g_raid3_metadata md; 144 u_char sector[512]; 145 const char *str; 146 unsigned sectorsize, ssize; 147 off_t mediasize, msize; 148 int hardcode, round_robin, verify; 149 int error, i, nargs; 150 151 bzero(sector, sizeof(sector)); 152 nargs = gctl_get_int(req, "nargs"); 153 if (nargs < 4) { 154 gctl_error(req, "Too few arguments."); 155 return; 156 } 157 if (bitcount32(nargs - 2) != 1) { 158 gctl_error(req, "Invalid number of components."); 159 return; 160 } 161 162 strlcpy(md.md_magic, G_RAID3_MAGIC, sizeof(md.md_magic)); 163 md.md_version = G_RAID3_VERSION; 164 str = gctl_get_ascii(req, "arg0"); 165 strlcpy(md.md_name, str, sizeof(md.md_name)); 166 md.md_id = arc4random(); 167 md.md_all = nargs - 1; 168 md.md_mflags = 0; 169 md.md_dflags = 0; 170 md.md_genid = 0; 171 md.md_syncid = 1; 172 md.md_sync_offset = 0; 173 if (gctl_get_int(req, "noautosync")) 174 md.md_mflags |= G_RAID3_DEVICE_FLAG_NOAUTOSYNC; 175 if (gctl_get_int(req, "nofailsync")) 176 md.md_mflags |= G_RAID3_DEVICE_FLAG_NOFAILSYNC; 177 round_robin = gctl_get_int(req, "round_robin"); 178 if (round_robin) 179 md.md_mflags |= G_RAID3_DEVICE_FLAG_ROUND_ROBIN; 180 verify = gctl_get_int(req, "verify"); 181 if (verify) 182 md.md_mflags |= G_RAID3_DEVICE_FLAG_VERIFY; 183 if (round_robin && verify) { 184 gctl_error(req, "Both '%c' and '%c' options given.", 'r', 'w'); 185 return; 186 } 187 hardcode = gctl_get_int(req, "hardcode"); 188 189 /* 190 * Calculate sectorsize by finding least common multiple from 191 * sectorsizes of every disk and find the smallest mediasize. 192 */ 193 mediasize = 0; 194 sectorsize = gctl_get_intmax(req, "sectorsize"); 195 for (i = 1; i < nargs; i++) { 196 str = gctl_get_ascii(req, "arg%d", i); 197 msize = g_get_mediasize(str); 198 ssize = g_get_sectorsize(str); 199 if (msize == 0 || ssize == 0) { 200 gctl_error(req, "Can't get informations about %s: %s.", 201 str, strerror(errno)); 202 return; 203 } 204 msize -= ssize; 205 if (mediasize == 0 || (mediasize > 0 && msize < mediasize)) 206 mediasize = msize; 207 if (sectorsize == 0) 208 sectorsize = ssize; 209 else 210 sectorsize = g_lcm(sectorsize, ssize); 211 } 212 md.md_mediasize = mediasize * (nargs - 2); 213 md.md_sectorsize = sectorsize * (nargs - 2); 214 md.md_mediasize -= (md.md_mediasize % md.md_sectorsize); 215 216 if (md.md_sectorsize > MAXPHYS) { 217 gctl_error(req, "The blocksize is too big."); 218 return; 219 } 220 221 /* 222 * Clear last sector first, to spoil all components if device exists. 223 */ 224 for (i = 1; i < nargs; i++) { 225 str = gctl_get_ascii(req, "arg%d", i); 226 error = g_metadata_clear(str, NULL); 227 if (error != 0) { 228 gctl_error(req, "Can't store metadata on %s: %s.", str, 229 strerror(error)); 230 return; 231 } 232 } 233 234 /* 235 * Ok, store metadata (use disk number as priority). 236 */ 237 for (i = 1; i < nargs; i++) { 238 str = gctl_get_ascii(req, "arg%d", i); 239 msize = g_get_mediasize(str); 240 ssize = g_get_sectorsize(str); 241 if (mediasize < msize - ssize) { 242 fprintf(stderr, 243 "warning: %s: only %jd bytes from %jd bytes used.\n", 244 str, (intmax_t)mediasize, (intmax_t)(msize - ssize)); 245 } 246 247 md.md_no = i - 1; 248 md.md_provsize = msize; 249 if (!hardcode) 250 bzero(md.md_provider, sizeof(md.md_provider)); 251 else { 252 if (strncmp(str, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 253 str += sizeof(_PATH_DEV) - 1; 254 strlcpy(md.md_provider, str, sizeof(md.md_provider)); 255 } 256 if (verify && md.md_no == md.md_all - 1) { 257 /* 258 * In "verify" mode, force synchronization of parity 259 * component on start. 260 */ 261 md.md_syncid = 0; 262 } 263 raid3_metadata_encode(&md, sector); 264 error = g_metadata_store(str, sector, sizeof(sector)); 265 if (error != 0) { 266 fprintf(stderr, "Can't store metadata on %s: %s.\n", 267 str, strerror(error)); 268 gctl_error(req, "Not fully done."); 269 continue; 270 } 271 if (verbose) 272 printf("Metadata value stored on %s.\n", str); 273 } 274 } 275 276 static void 277 raid3_clear(struct gctl_req *req) 278 { 279 const char *name; 280 int error, i, nargs; 281 282 nargs = gctl_get_int(req, "nargs"); 283 if (nargs < 1) { 284 gctl_error(req, "Too few arguments."); 285 return; 286 } 287 288 for (i = 0; i < nargs; i++) { 289 name = gctl_get_ascii(req, "arg%d", i); 290 error = g_metadata_clear(name, G_RAID3_MAGIC); 291 if (error != 0) { 292 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 293 name, strerror(error)); 294 gctl_error(req, "Not fully done."); 295 continue; 296 } 297 if (verbose) 298 printf("Metadata cleared on %s.\n", name); 299 } 300 } 301 302 static void 303 raid3_dump(struct gctl_req *req) 304 { 305 struct g_raid3_metadata md, tmpmd; 306 const char *name; 307 int error, i, nargs; 308 309 nargs = gctl_get_int(req, "nargs"); 310 if (nargs < 1) { 311 gctl_error(req, "Too few arguments."); 312 return; 313 } 314 315 for (i = 0; i < nargs; i++) { 316 name = gctl_get_ascii(req, "arg%d", i); 317 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 318 G_RAID3_MAGIC); 319 if (error != 0) { 320 fprintf(stderr, "Can't read metadata from %s: %s.\n", 321 name, strerror(error)); 322 gctl_error(req, "Not fully done."); 323 continue; 324 } 325 if (raid3_metadata_decode((u_char *)&tmpmd, &md) != 0) { 326 fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n", 327 name); 328 gctl_error(req, "Not fully done."); 329 continue; 330 } 331 printf("Metadata on %s:\n", name); 332 raid3_metadata_dump(&md); 333 printf("\n"); 334 } 335 } 336