1/*- 2 * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 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/stripe/g_stripe.h> 41 42#include "core/geom.h" 43#include "misc/subr.h" 44 45 46uint32_t lib_version = G_LIB_VERSION; 47uint32_t version = G_STRIPE_VERSION; 48 49#define GSTRIPE_STRIPESIZE "65536" 50 51static void stripe_main(struct gctl_req *req, unsigned flags); 52static void stripe_clear(struct gctl_req *req); 53static void stripe_dump(struct gctl_req *req); 54static void stripe_label(struct gctl_req *req); 55 56struct g_command class_commands[] = { 57 { "clear", G_FLAG_VERBOSE, stripe_main, G_NULL_OPTS, 58 "[-v] prov ..." 59 }, 60 { "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL, 61 { 62 { 's', "stripesize", GSTRIPE_STRIPESIZE, G_TYPE_NUMBER }, 63 G_OPT_SENTINEL 64 }, 65 "[-hv] [-s stripesize] name prov prov ..." 66 }, 67 { "destroy", G_FLAG_VERBOSE, NULL, 68 { 69 { 'f', "force", NULL, G_TYPE_BOOL }, 70 G_OPT_SENTINEL 71 }, 72 "[-fv] name ..." 73 }, 74 { "dump", 0, stripe_main, G_NULL_OPTS, 75 "prov ..." 76 }, 77 { "label", G_FLAG_VERBOSE | G_FLAG_LOADKLD, stripe_main, 78 { 79 { 'h', "hardcode", NULL, G_TYPE_BOOL }, 80 { 's', "stripesize", GSTRIPE_STRIPESIZE, G_TYPE_NUMBER }, 81 G_OPT_SENTINEL 82 }, 83 "[-hv] [-s stripesize] name prov prov ..." 84 }, 85 { "stop", G_FLAG_VERBOSE, NULL, 86 { 87 { 'f', "force", NULL, G_TYPE_BOOL }, 88 G_OPT_SENTINEL 89 }, 90 "[-fv] name ..." 91 }, 92 G_CMD_SENTINEL 93}; 94 95static int verbose = 0; 96 97static void 98stripe_main(struct gctl_req *req, unsigned flags) 99{ 100 const char *name; 101 102 if ((flags & G_FLAG_VERBOSE) != 0) 103 verbose = 1; 104 105 name = gctl_get_ascii(req, "verb"); 106 if (name == NULL) { 107 gctl_error(req, "No '%s' argument.", "verb"); 108 return; 109 } 110 if (strcmp(name, "label") == 0) 111 stripe_label(req); 112 else if (strcmp(name, "clear") == 0) 113 stripe_clear(req); 114 else if (strcmp(name, "dump") == 0) 115 stripe_dump(req); 116 else 117 gctl_error(req, "Unknown command: %s.", name); 118} 119 120static void 121stripe_label(struct gctl_req *req) 122{ 123 struct g_stripe_metadata md; 124 intmax_t stripesize; 125 off_t compsize, msize; 126 u_char sector[512]; 127 unsigned ssize, secsize; 128 const char *name; 129 int error, i, nargs, hardcode; 130 131 nargs = gctl_get_int(req, "nargs"); 132 if (nargs < 3) { 133 gctl_error(req, "Too few arguments."); 134 return; 135 } 136 hardcode = gctl_get_int(req, "hardcode"); 137 138 /* 139 * Clear last sector first to spoil all components if device exists. 140 */ 141 compsize = 0; 142 secsize = 0; 143 for (i = 1; i < nargs; i++) { 144 name = gctl_get_ascii(req, "arg%d", i); 145 msize = g_get_mediasize(name); 146 ssize = g_get_sectorsize(name); 147 if (msize == 0 || ssize == 0) { 148 gctl_error(req, "Can't get informations about %s: %s.", 149 name, strerror(errno)); 150 return; 151 } 152 msize -= ssize; 153 if (compsize == 0 || (compsize > 0 && msize < compsize)) 154 compsize = msize; 155 if (secsize == 0) 156 secsize = ssize; 157 else 158 secsize = g_lcm(secsize, ssize); 159 160 error = g_metadata_clear(name, NULL); 161 if (error != 0) { 162 gctl_error(req, "Can't store metadata on %s: %s.", name, 163 strerror(error)); 164 return; 165 } 166 } 167 168 strlcpy(md.md_magic, G_STRIPE_MAGIC, sizeof(md.md_magic)); 169 md.md_version = G_STRIPE_VERSION; 170 name = gctl_get_ascii(req, "arg0"); 171 strlcpy(md.md_name, name, sizeof(md.md_name)); 172 md.md_id = arc4random(); 173 md.md_all = nargs - 1; 174 stripesize = gctl_get_intmax(req, "stripesize"); 175 if ((stripesize % secsize) != 0) { 176 gctl_error(req, "Stripesize should be multiple of %u.", 177 secsize); 178 return; 179 } 180 md.md_stripesize = stripesize; 181 182 /* 183 * Ok, store metadata. 184 */ 185 for (i = 1; i < nargs; i++) { 186 name = gctl_get_ascii(req, "arg%d", i); 187 msize = g_get_mediasize(name); 188 ssize = g_get_sectorsize(name); 189 if (compsize < msize - ssize) { 190 fprintf(stderr, 191 "warning: %s: only %jd bytes from %jd bytes used.\n", 192 name, (intmax_t)compsize, (intmax_t)(msize - ssize)); 193 } 194 195 md.md_no = i - 1; 196 md.md_provsize = msize; 197 if (!hardcode) 198 bzero(md.md_provider, sizeof(md.md_provider)); 199 else { 200 if (strncmp(name, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) 201 name += sizeof(_PATH_DEV) - 1; 202 strlcpy(md.md_provider, name, sizeof(md.md_provider)); 203 } 204 stripe_metadata_encode(&md, sector); 205 error = g_metadata_store(name, sector, sizeof(sector)); 206 if (error != 0) { 207 fprintf(stderr, "Can't store metadata on %s: %s.\n", 208 name, strerror(error)); 209 gctl_error(req, "Not fully done."); 210 continue; 211 } 212 if (verbose) 213 printf("Metadata value stored on %s.\n", name); 214 } 215} 216 217static void 218stripe_clear(struct gctl_req *req) 219{ 220 const char *name; 221 int error, i, nargs; 222 223 nargs = gctl_get_int(req, "nargs"); 224 if (nargs < 1) { 225 gctl_error(req, "Too few arguments."); 226 return; 227 } 228 229 for (i = 0; i < nargs; i++) { 230 name = gctl_get_ascii(req, "arg%d", i); 231 error = g_metadata_clear(name, G_STRIPE_MAGIC); 232 if (error != 0) { 233 fprintf(stderr, "Can't clear metadata on %s: %s.\n", 234 name, strerror(error)); 235 gctl_error(req, "Not fully done."); 236 continue; 237 } 238 if (verbose) 239 printf("Metadata cleared on %s.\n", name); 240 } 241} 242 243static void 244stripe_metadata_dump(const struct g_stripe_metadata *md) 245{ 246 247 printf(" Magic string: %s\n", md->md_magic); 248 printf(" Metadata version: %u\n", (u_int)md->md_version); 249 printf(" Device name: %s\n", md->md_name); 250 printf(" Device ID: %u\n", (u_int)md->md_id); 251 printf(" Disk number: %u\n", (u_int)md->md_no); 252 printf("Total number of disks: %u\n", (u_int)md->md_all); 253 printf(" Stripe size: %u\n", (u_int)md->md_stripesize); 254 printf(" Hardcoded provider: %s\n", md->md_provider); 255} 256 257static void 258stripe_dump(struct gctl_req *req) 259{ 260 struct g_stripe_metadata md, tmpmd; 261 const char *name; 262 int error, i, nargs; 263 264 nargs = gctl_get_int(req, "nargs"); 265 if (nargs < 1) { 266 gctl_error(req, "Too few arguments."); 267 return; 268 } 269 270 for (i = 0; i < nargs; i++) { 271 name = gctl_get_ascii(req, "arg%d", i); 272 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd), 273 G_STRIPE_MAGIC); 274 if (error != 0) { 275 fprintf(stderr, "Can't read metadata from %s: %s.\n", 276 name, strerror(error)); 277 gctl_error(req, "Not fully done."); 278 continue; 279 } 280 stripe_metadata_decode((u_char *)&tmpmd, &md); 281 printf("Metadata on %s:\n", name); 282 stripe_metadata_dump(&md); 283 printf("\n"); 284 } 285} 286