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 bzero(sector, sizeof(sector));
153 nargs = gctl_get_int(req, "nargs");
155 gctl_error(req, "Too few arguments.");
158 if (bitcount32(nargs - 2) != 1) {
159 gctl_error(req, "Invalid number of components.");
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;
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");
180 md.md_mflags |= G_RAID3_DEVICE_FLAG_ROUND_ROBIN;
181 verify = gctl_get_int(req, "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');
188 hardcode = gctl_get_int(req, "hardcode");
191 * Calculate sectorsize by finding least common multiple from
192 * sectorsizes of every disk and find the smallest mediasize.
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));
206 if (mediasize == 0 || (mediasize > 0 && msize < mediasize))
211 sectorsize = g_lcm(sectorsize, ssize);
213 md.md_mediasize = mediasize * (nargs - 2);
214 md.md_sectorsize = sectorsize * (nargs - 2);
215 md.md_mediasize -= (md.md_mediasize % md.md_sectorsize);
217 if (md.md_sectorsize > MAXPHYS) {
218 gctl_error(req, "The blocksize is too big.");
223 * Clear last sector first, to spoil all components if device exists.
225 for (i = 1; i < nargs; i++) {
226 str = gctl_get_ascii(req, "arg%d", i);
227 error = g_metadata_clear(str, NULL);
229 gctl_error(req, "Can't store metadata on %s: %s.", str,
236 * Ok, store metadata (use disk number as priority).
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) {
244 "warning: %s: only %jd bytes from %jd bytes used.\n",
245 str, (intmax_t)mediasize, (intmax_t)(msize - ssize));
249 md.md_provsize = msize;
251 bzero(md.md_provider, sizeof(md.md_provider));
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));
257 if (verify && md.md_no == md.md_all - 1) {
259 * In "verify" mode, force synchronization of parity
260 * component on start.
264 raid3_metadata_encode(&md, sector);
265 error = g_metadata_store(str, sector, sizeof(sector));
267 fprintf(stderr, "Can't store metadata on %s: %s.\n",
268 str, strerror(error));
269 gctl_error(req, "Not fully done.");
273 printf("Metadata value stored on %s.\n", str);
278 raid3_clear(struct gctl_req *req)
283 nargs = gctl_get_int(req, "nargs");
285 gctl_error(req, "Too few arguments.");
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);
293 fprintf(stderr, "Can't clear metadata on %s: %s.\n",
294 name, strerror(error));
295 gctl_error(req, "Not fully done.");
299 printf("Metadata cleared on %s.\n", name);
304 raid3_dump(struct gctl_req *req)
306 struct g_raid3_metadata md, tmpmd;
310 nargs = gctl_get_int(req, "nargs");
312 gctl_error(req, "Too few arguments.");
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),
321 fprintf(stderr, "Can't read metadata from %s: %s.\n",
322 name, strerror(error));
323 gctl_error(req, "Not fully done.");
326 if (raid3_metadata_decode((u_char *)&tmpmd, &md) != 0) {
327 fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n",
329 gctl_error(req, "Not fully done.");
332 printf("Metadata on %s:\n", name);
333 raid3_metadata_dump(&md);