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/cdefs.h> 30 #include <sys/param.h> 31 #include <errno.h> 32 #include <paths.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <stdint.h> 36 #include <string.h> 37 #include <strings.h> 38 #include <assert.h> 39 #include <libgeom.h> 40 #include <geom/raid3/g_raid3.h> 41 #include <core/geom.h> 42 #include <misc/subr.h> 43 44 45 uint32_t lib_version = G_LIB_VERSION; 46 uint32_t version = G_RAID3_VERSION; 47 48 static void raid3_main(struct gctl_req *req, unsigned f); 49 static void raid3_clear(struct gctl_req *req); 50 static void raid3_dump(struct gctl_req *req); 51 static void raid3_label(struct gctl_req *req); 52 53 struct g_command class_commands[] = { 54 { "clear", G_FLAG_VERBOSE, raid3_main, G_NULL_OPTS, 55 "[-v] prov ..." 56 }, 57 { "configure", G_FLAG_VERBOSE, NULL, 58 { 59 { 'a', "autosync", NULL, G_TYPE_BOOL }, 60 { 'd', "dynamic", NULL, G_TYPE_BOOL }, 61 { 'f', "failsync", NULL, G_TYPE_BOOL }, 62 { 'F', "nofailsync", NULL, G_TYPE_BOOL }, 63 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 64 { 'n', "noautosync", NULL, G_TYPE_BOOL }, 65 { 'r', "round_robin", NULL, G_TYPE_BOOL }, 66 { 'R', "noround_robin", NULL, G_TYPE_BOOL }, 67 { 'w', "verify", NULL, G_TYPE_BOOL }, 68 { 'W', "noverify", NULL, G_TYPE_BOOL }, 69 G_OPT_SENTINEL 70 }, 71 "[-adfFhnrRvwW] name" 72 }, 73 { "dump", 0, raid3_main, G_NULL_OPTS, 74 "prov ..." 75 }, 76 { "insert", G_FLAG_VERBOSE, NULL, 77 { 78 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 79 { 'n', "number", G_VAL_OPTIONAL, G_TYPE_NUMBER }, 80 G_OPT_SENTINEL 81 }, 82 "[-hv] <-n number> name prov" 83 }, 84 { "label", G_FLAG_VERBOSE, raid3_main, 85 { 86 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 87 { 'F', "nofailsync", NULL, G_TYPE_BOOL }, 88 { 'n', "noautosync", NULL, G_TYPE_BOOL }, 89 { 'r', "round_robin", NULL, G_TYPE_BOOL }, 90 { 's', "sectorsize", "0", G_TYPE_NUMBER }, 91 { 'w', "verify", NULL, G_TYPE_BOOL }, 92 G_OPT_SENTINEL 93 }, 94 "[-hFnrvw] [-s blocksize] name prov prov prov ..." 95 }, 96 { "rebuild", G_FLAG_VERBOSE, NULL, G_NULL_OPTS, 97 "[-v] name prov" 98 }, 99 { "remove", G_FLAG_VERBOSE, NULL, 100 { 101 { 'n', "number", NULL, G_TYPE_NUMBER }, 102 G_OPT_SENTINEL 103 }, 104 "[-v] <-n number> name" 105 }, 106 { "stop", G_FLAG_VERBOSE, NULL, 107 { 108 { 'f', "force", NULL, G_TYPE_BOOL }, 109 G_OPT_SENTINEL 110 }, 111 "[-fv] name ..." 112 }, 113 G_CMD_SENTINEL 114 }; 115 116 static int verbose = 0; 117 118 static void 119 raid3_main(struct gctl_req *req, unsigned flags) 120 { 121 const char *name; 122 123 if ((flags & G_FLAG_VERBOSE) != 0) 124 verbose = 1; 125 126 name = gctl_get_ascii(req, "verb"); 127 if (name == NULL) { 128 gctl_error(req, "No '%s' argument.", "verb"); 129 return; 130 } 131 if (strcmp(name, "label") == 0) 132 raid3_label(req); 133 else if (strcmp(name, "clear") == 0) 134 raid3_clear(req); 135 else if (strcmp(name, "dump") == 0) 136 raid3_dump(req); 137 else 138 gctl_error(req, "Unknown command: %s.", name); 139 } 140 141 static void 142 raid3_label(struct gctl_req *req) 143 { 144 struct g_raid3_metadata md; 145 u_char sector[512]; 146 const char *str; 147 unsigned sectorsize, ssize; 148 off_t mediasize, msize; 149 int hardcode, round_robin, verify; 150 int error, i, nargs; 151 152 bzero(sector, sizeof(sector)); 153 nargs = gctl_get_int(req, "nargs"); 154 if (nargs < 4) { 155 gctl_error(req, "Too few arguments."); 156 return; 157 } 158 if (bitcount32(nargs - 2) != 1) { 159 gctl_error(req, "Invalid number of components."); 160 return; 161 } 162 163 strlcpy(md.md_magic, G_RAID3_MAGIC, sizeof(md.md_magic)); 164 md.md_version = G_RAID3_VERSION; 165 str = gctl_get_ascii(req, "arg0"); 166 strlcpy(md.md_name, str, sizeof(md.md_name)); 167 md.md_id = arc4random(); 168 md.md_all = nargs - 1; 169 md.md_mflags = 0; 170 md.md_dflags = 0; 171 md.md_genid = 0; 172 md.md_syncid = 1; 173 md.md_sync_offset = 0; 174 if (gctl_get_int(req, "noautosync")) 175 md.md_mflags |= G_RAID3_DEVICE_FLAG_NOAUTOSYNC; 176 if (gctl_get_int(req, "nofailsync")) 177 md.md_mflags |= G_RAID3_DEVICE_FLAG_NOFAILSYNC; 178 round_robin = gctl_get_int(req, "round_robin"); 179 if (round_robin) 180 md.md_mflags |= G_RAID3_DEVICE_FLAG_ROUND_ROBIN; 181 verify = gctl_get_int(req, "verify"); 182 if (verify) 183 md.md_mflags |= G_RAID3_DEVICE_FLAG_VERIFY; 184 if (round_robin && verify) { 185 gctl_error(req, "Both '%c' and '%c' options given.", 'r', 'w'); 186 return; 187 } 188 hardcode = gctl_get_int(req, "hardcode"); 189 190 /* 191 * Calculate sectorsize by finding least common multiple from 192 * sectorsizes of every disk and find the smallest mediasize. 193 */ 194 mediasize = 0; 195 sectorsize = gctl_get_intmax(req, "sectorsize"); 196 for (i = 1; i < nargs; i++) { 197 str = gctl_get_ascii(req, "arg%d", i); 198 msize = g_get_mediasize(str); 199 ssize = g_get_sectorsize(str); 200 if (msize == 0 || ssize == 0) { 201 gctl_error(req, "Can't get informations about %s: %s.", 202 str, strerror(errno)); 203 return; 204 } 205 msize -= ssize; 206 if (mediasize == 0 || (mediasize > 0 && msize < mediasize)) 207 mediasize = msize; 208 if (sectorsize == 0) 209 sectorsize = ssize; 210 else 211 sectorsize = g_lcm(sectorsize, ssize); 212 } 213 md.md_mediasize = mediasize * (nargs - 2); 214 md.md_sectorsize = sectorsize * (nargs - 2); 215 md.md_mediasize -= (md.md_mediasize % md.md_sectorsize); 216 217 if (md.md_sectorsize > MAXPHYS) { 218 gctl_error(req, "The blocksize is too big."); 219 return; 220 } 221 222 /* 223 * Clear last sector first, to spoil all components if device exists. 224 */ 225 for (i = 1; i < nargs; i++) { 226 str = gctl_get_ascii(req, "arg%d", i); 227 error = g_metadata_clear(str, NULL); 228 if (error != 0) { 229 gctl_error(req, "Can't store metadata on %s: %s.", str, 230 strerror(error)); 231 return; 232 } 233 } 234 235 /* 236 * Ok, store metadata (use disk number as priority). 237 */ 238 for (i = 1; i < nargs; i++) { 239 str = gctl_get_ascii(req, "arg%d", i); 240 msize = g_get_mediasize(str); 241 ssize = g_get_sectorsize(str); 242 if (mediasize < msize - ssize) { 243 fprintf(stderr, 244 "warning: %s: only %jd bytes from %jd bytes used.\n", 245 str, (intmax_t)mediasize, (intmax_t)(msize - ssize)); 246 } 247 248 md.md_no = i - 1; 249 md.md_provsize = msize; 250 if (!hardcode) 251 bzero(md.md_provider, sizeof(md.md_provider)); 252 else { 253 if (strncmp(str, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 254 str += sizeof(_PATH_DEV) - 1; 255 strlcpy(md.md_provider, str, sizeof(md.md_provider)); 256 } 257 if (verify && md.md_no == md.md_all - 1) { 258 /* 259 * In "verify" mode, force synchronization of parity 260 * component on start. 261 */ 262 md.md_syncid = 0; 263 } 264 raid3_metadata_encode(&md, sector); 265 error = g_metadata_store(str, sector, sizeof(sector)); 266 if (error != 0) { 267 fprintf(stderr, "Can't store metadata on %s: %s.\n", 268 str, strerror(error)); 269 gctl_error(req, "Not fully done."); 270 continue; 271 } 272 if (verbose) 273 printf("Metadata value stored on %s.\n", str); 274 } 275 } 276 277 static void 278 raid3_clear(struct gctl_req *req) 279 { 280 const char *name; 281 int error, i, nargs; 282 283 nargs = gctl_get_int(req, "nargs"); 284 if (nargs < 1) { 285 gctl_error(req, "Too few arguments."); 286 return; 287 } 288 289 for (i = 0; i < nargs; i++) { 290 name = gctl_get_ascii(req, "arg%d", i); 291 error = g_metadata_clear(name, G_RAID3_MAGIC); 292 if (error != 0) { 293 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 294 name, strerror(error)); 295 gctl_error(req, "Not fully done."); 296 continue; 297 } 298 if (verbose) 299 printf("Metadata cleared on %s.\n", name); 300 } 301 } 302 303 static void 304 raid3_dump(struct gctl_req *req) 305 { 306 struct g_raid3_metadata md, tmpmd; 307 const char *name; 308 int error, i, nargs; 309 310 nargs = gctl_get_int(req, "nargs"); 311 if (nargs < 1) { 312 gctl_error(req, "Too few arguments."); 313 return; 314 } 315 316 for (i = 0; i < nargs; i++) { 317 name = gctl_get_ascii(req, "arg%d", i); 318 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 319 G_RAID3_MAGIC); 320 if (error != 0) { 321 fprintf(stderr, "Can't read metadata from %s: %s.\n", 322 name, strerror(error)); 323 gctl_error(req, "Not fully done."); 324 continue; 325 } 326 if (raid3_metadata_decode((u_char *)&tmpmd, &md) != 0) { 327 fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n", 328 name); 329 gctl_error(req, "Not fully done."); 330 continue; 331 } 332 printf("Metadata on %s:\n", name); 333 raid3_metadata_dump(&md); 334 printf("\n"); 335 } 336 } 337