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
raid3_main(struct gctl_req * req,unsigned flags)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
raid3_label(struct gctl_req * req)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
raid3_clear(struct gctl_req * req)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
raid3_dump(struct gctl_req * req)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