2 * Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
40 #include <geom/raid3/g_raid3.h>
41 #include <core/geom.h>
42 #include <misc/subr.h>
45 uint32_t lib_version = G_LIB_VERSION;
46 uint32_t version = G_RAID3_VERSION;
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);
53 struct g_command class_commands[] = {
54 { "clear", G_FLAG_VERBOSE, raid3_main, G_NULL_OPTS,
57 { "configure", G_FLAG_VERBOSE, NULL,
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 },
73 { "dump", 0, raid3_main, G_NULL_OPTS,
76 { "insert", G_FLAG_VERBOSE, NULL,
78 { 'h', "hardcode", NULL, G_TYPE_BOOL },
79 { 'n', "number", G_VAL_OPTIONAL, G_TYPE_NUMBER },
82 "[-hv] <-n number> name prov"
84 { "label", G_FLAG_VERBOSE, raid3_main,
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 },
94 "[-hFnrvw] [-s blocksize] name prov prov prov ..."
96 { "rebuild", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
99 { "remove", G_FLAG_VERBOSE, NULL,
101 { 'n', "number", NULL, G_TYPE_NUMBER },
104 "[-v] <-n number> name"
106 { "stop", G_FLAG_VERBOSE, NULL,
108 { 'f', "force", NULL, G_TYPE_BOOL },
116 static int verbose = 0;
119 raid3_main(struct gctl_req *req, unsigned flags)
123 if ((flags & G_FLAG_VERBOSE) != 0)
126 name = gctl_get_ascii(req, "verb");
128 gctl_error(req, "No '%s' argument.", "verb");
131 if (strcmp(name, "label") == 0)
133 else if (strcmp(name, "clear") == 0)
135 else if (strcmp(name, "dump") == 0)
138 gctl_error(req, "Unknown command: %s.", name);
142 raid3_label(struct gctl_req *req)
144 struct g_raid3_metadata md;
147 unsigned sectorsize, ssize;
148 off_t mediasize, msize;
149 int hardcode, round_robin, verify;
152 nargs = gctl_get_int(req, "nargs");
154 gctl_error(req, "Too few arguments.");
157 if (bitcount32(nargs - 2) != 1) {
158 gctl_error(req, "Invalid number of components.");
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;
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");
179 md.md_mflags |= G_RAID3_DEVICE_FLAG_ROUND_ROBIN;
180 verify = gctl_get_int(req, "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');
187 hardcode = gctl_get_int(req, "hardcode");
190 * Calculate sectorsize by finding least common multiple from
191 * sectorsizes of every disk and find the smallest mediasize.
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));
205 if (mediasize == 0 || (mediasize > 0 && msize < mediasize))
210 sectorsize = g_lcm(sectorsize, ssize);
212 md.md_mediasize = mediasize * (nargs - 2);
213 md.md_sectorsize = sectorsize * (nargs - 2);
214 md.md_mediasize -= (md.md_mediasize % md.md_sectorsize);
216 if (md.md_sectorsize > MAXPHYS) {
217 gctl_error(req, "The blocksize is too big.");
222 * Clear last sector first, to spoil all components if device exists.
224 for (i = 1; i < nargs; i++) {
225 str = gctl_get_ascii(req, "arg%d", i);
226 error = g_metadata_clear(str, NULL);
228 gctl_error(req, "Can't store metadata on %s: %s.", str,
235 * Ok, store metadata (use disk number as priority).
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) {
243 "warning: %s: only %jd bytes from %jd bytes used.\n",
244 str, (intmax_t)mediasize, (intmax_t)(msize - ssize));
248 md.md_provsize = msize;
250 bzero(md.md_provider, sizeof(md.md_provider));
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));
256 if (verify && md.md_no == md.md_all - 1) {
258 * In "verify" mode, force synchronization of parity
259 * component on start.
263 raid3_metadata_encode(&md, sector);
264 error = g_metadata_store(str, sector, sizeof(sector));
266 fprintf(stderr, "Can't store metadata on %s: %s.\n",
267 str, strerror(error));
268 gctl_error(req, "Not fully done.");
272 printf("Metadata value stored on %s.\n", str);
277 raid3_clear(struct gctl_req *req)
282 nargs = gctl_get_int(req, "nargs");
284 gctl_error(req, "Too few arguments.");
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);
292 fprintf(stderr, "Can't clear metadata on %s: %s.\n",
293 name, strerror(error));
294 gctl_error(req, "Not fully done.");
298 printf("Metadata cleared on %s.\n", name);
303 raid3_dump(struct gctl_req *req)
305 struct g_raid3_metadata md, tmpmd;
309 nargs = gctl_get_int(req, "nargs");
311 gctl_error(req, "Too few arguments.");
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),
320 fprintf(stderr, "Can't read metadata from %s: %s.\n",
321 name, strerror(error));
322 gctl_error(req, "Not fully done.");
325 if (raid3_metadata_decode((u_char *)&tmpmd, &md) != 0) {
326 fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n",
328 gctl_error(req, "Not fully done.");
331 printf("Metadata on %s:\n", name);
332 raid3_metadata_dump(&md);