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/mirror/g_mirror.h>
41 #include <core/geom.h>
42 #include <misc/subr.h>
45 uint32_t lib_version = G_LIB_VERSION;
46 uint32_t version = G_MIRROR_VERSION;
48 static char label_balance[] = "split", configure_balance[] = "none";
49 static intmax_t label_slice = 4096, configure_slice = -1;
50 static intmax_t insert_priority = 0;
52 static void mirror_main(struct gctl_req *req, unsigned flags);
53 static void mirror_activate(struct gctl_req *req);
54 static void mirror_clear(struct gctl_req *req);
55 static void mirror_dump(struct gctl_req *req);
56 static void mirror_label(struct gctl_req *req);
58 struct g_command class_commands[] = {
59 { "activate", G_FLAG_VERBOSE, mirror_main, G_NULL_OPTS, NULL,
62 { "clear", G_FLAG_VERBOSE, mirror_main, G_NULL_OPTS, NULL,
65 { "configure", G_FLAG_VERBOSE, NULL,
67 { 'a', "autosync", NULL, G_TYPE_BOOL },
68 { 'b', "balance", configure_balance, G_TYPE_STRING },
69 { 'd', "dynamic", NULL, G_TYPE_BOOL },
70 { 'f', "failsync", NULL, G_TYPE_BOOL },
71 { 'F', "nofailsync", NULL, G_TYPE_BOOL },
72 { 'h', "hardcode", NULL, G_TYPE_BOOL },
73 { 'n', "noautosync", NULL, G_TYPE_BOOL },
74 { 's', "slice", &configure_slice, G_TYPE_NUMBER },
77 NULL, "[-adfFhnv] [-b balance] [-s slice] name"
79 { "deactivate", G_FLAG_VERBOSE, NULL, G_NULL_OPTS, NULL,
82 { "dump", 0, mirror_main, G_NULL_OPTS, NULL,
85 { "forget", G_FLAG_VERBOSE, NULL, G_NULL_OPTS, NULL,
88 { "label", G_FLAG_VERBOSE, mirror_main,
90 { 'b', "balance", label_balance, G_TYPE_STRING },
91 { 'F', "nofailsync", NULL, G_TYPE_BOOL },
92 { 'h', "hardcode", NULL, G_TYPE_BOOL },
93 { 'n', "noautosync", NULL, G_TYPE_BOOL },
94 { 's', "slice", &label_slice, G_TYPE_NUMBER },
97 NULL, "[-Fhnv] [-b balance] [-s slice] name prov ..."
99 { "insert", G_FLAG_VERBOSE, NULL,
101 { 'h', "hardcode", NULL, G_TYPE_BOOL },
102 { 'i', "inactive", NULL, G_TYPE_BOOL },
103 { 'p', "priority", &insert_priority, G_TYPE_NUMBER },
106 NULL, "[-hiv] [-p priority] name prov ..."
108 { "rebuild", G_FLAG_VERBOSE, NULL, G_NULL_OPTS, NULL,
111 { "remove", G_FLAG_VERBOSE, NULL, G_NULL_OPTS, NULL,
114 { "stop", G_FLAG_VERBOSE, NULL,
116 { 'f', "force", NULL, G_TYPE_BOOL },
119 NULL, "[-fv] name ..."
124 static int verbose = 0;
127 mirror_main(struct gctl_req *req, unsigned flags)
131 if ((flags & G_FLAG_VERBOSE) != 0)
134 name = gctl_get_ascii(req, "verb");
136 gctl_error(req, "No '%s' argument.", "verb");
139 if (strcmp(name, "label") == 0)
141 else if (strcmp(name, "clear") == 0)
143 else if (strcmp(name, "dump") == 0)
145 else if (strcmp(name, "activate") == 0)
146 mirror_activate(req);
148 gctl_error(req, "Unknown command: %s.", name);
152 mirror_label(struct gctl_req *req)
154 struct g_mirror_metadata md;
160 int error, i, nargs, bal, hardcode;
162 nargs = gctl_get_int(req, "nargs");
164 gctl_error(req, "Too few arguments.");
168 strlcpy(md.md_magic, G_MIRROR_MAGIC, sizeof(md.md_magic));
169 md.md_version = G_MIRROR_VERSION;
170 str = gctl_get_ascii(req, "arg0");
171 strlcpy(md.md_name, str, sizeof(md.md_name));
172 md.md_mid = arc4random();
173 md.md_all = nargs - 1;
178 md.md_sync_offset = 0;
179 val = gctl_get_intmax(req, "slice");
181 str = gctl_get_ascii(req, "balance");
182 bal = balance_id(str);
184 gctl_error(req, "Invalid balance algorithm.");
188 if (gctl_get_int(req, "noautosync"))
189 md.md_mflags |= G_MIRROR_DEVICE_FLAG_NOAUTOSYNC;
190 if (gctl_get_int(req, "nofailsync"))
191 md.md_mflags |= G_MIRROR_DEVICE_FLAG_NOFAILSYNC;
192 hardcode = gctl_get_int(req, "hardcode");
195 * Calculate sectorsize by finding least common multiple from
196 * sectorsizes of every disk and find the smallest mediasize.
200 for (i = 1; i < nargs; i++) {
204 str = gctl_get_ascii(req, "arg%d", i);
205 msize = g_get_mediasize(str);
206 ssize = g_get_sectorsize(str);
207 if (msize == 0 || ssize == 0) {
208 gctl_error(req, "Can't get informations about %s: %s.",
209 str, strerror(errno));
213 if (mediasize == 0 || (mediasize > 0 && msize < mediasize))
218 sectorsize = g_lcm(sectorsize, ssize);
220 md.md_mediasize = mediasize;
221 md.md_sectorsize = sectorsize;
222 md.md_mediasize -= (md.md_mediasize % md.md_sectorsize);
225 * Clear last sector first, to spoil all components if device exists.
227 for (i = 1; i < nargs; i++) {
228 str = gctl_get_ascii(req, "arg%d", i);
229 error = g_metadata_clear(str, NULL);
231 gctl_error(req, "Can't store metadata on %s: %s.", str,
238 * Ok, store metadata (use disk number as priority).
240 for (i = 1; i < nargs; i++) {
241 str = gctl_get_ascii(req, "arg%d", i);
242 md.md_did = arc4random();
243 md.md_priority = i - 1;
244 md.md_provsize = g_get_mediasize(str);
245 assert(md.md_provsize != 0);
247 bzero(md.md_provider, sizeof(md.md_provider));
249 if (strncmp(str, _PATH_DEV, strlen(_PATH_DEV)) == 0)
250 str += strlen(_PATH_DEV);
251 strlcpy(md.md_provider, str, sizeof(md.md_provider));
253 mirror_metadata_encode(&md, sector);
254 error = g_metadata_store(str, sector, sizeof(sector));
256 fprintf(stderr, "Can't store metadata on %s: %s.\n",
257 str, strerror(error));
258 gctl_error(req, "Not fully done.");
262 printf("Metadata value stored on %s.\n", str);
267 mirror_clear(struct gctl_req *req)
272 nargs = gctl_get_int(req, "nargs");
274 gctl_error(req, "Too few arguments.");
278 for (i = 0; i < nargs; i++) {
279 name = gctl_get_ascii(req, "arg%d", i);
280 error = g_metadata_clear(name, G_MIRROR_MAGIC);
282 fprintf(stderr, "Can't clear metadata on %s: %s.\n",
283 name, strerror(error));
284 gctl_error(req, "Not fully done.");
288 printf("Metadata cleared on %s.\n", name);
293 mirror_dump(struct gctl_req *req)
295 struct g_mirror_metadata md, tmpmd;
299 nargs = gctl_get_int(req, "nargs");
301 gctl_error(req, "Too few arguments.");
305 for (i = 0; i < nargs; i++) {
306 name = gctl_get_ascii(req, "arg%d", i);
307 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd),
310 fprintf(stderr, "Can't read metadata from %s: %s.\n",
311 name, strerror(error));
312 gctl_error(req, "Not fully done.");
315 if (mirror_metadata_decode((u_char *)&tmpmd, &md) != 0) {
316 fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n",
318 gctl_error(req, "Not fully done.");
321 printf("Metadata on %s:\n", name);
322 mirror_metadata_dump(&md);
328 mirror_activate(struct gctl_req *req)
330 struct g_mirror_metadata md, tmpmd;
331 const char *name, *path;
334 nargs = gctl_get_int(req, "nargs");
336 gctl_error(req, "Too few arguments.");
339 name = gctl_get_ascii(req, "arg0");
341 for (i = 1; i < nargs; i++) {
342 path = gctl_get_ascii(req, "arg%d", i);
343 error = g_metadata_read(path, (u_char *)&tmpmd, sizeof(tmpmd),
346 fprintf(stderr, "Cannot read metadata from %s: %s.\n",
347 path, strerror(error));
348 gctl_error(req, "Not fully done.");
351 if (mirror_metadata_decode((u_char *)&tmpmd, &md) != 0) {
353 "MD5 hash mismatch for provider %s, skipping.\n",
355 gctl_error(req, "Not fully done.");
358 if (strcmp(md.md_name, name) != 0) {
360 "Provider %s is not the mirror %s component.\n",
362 gctl_error(req, "Not fully done.");
365 md.md_dflags &= ~G_MIRROR_DISK_FLAG_INACTIVE;
366 mirror_metadata_encode(&md, (u_char *)&tmpmd);
367 error = g_metadata_store(path, (u_char *)&tmpmd, sizeof(tmpmd));
369 fprintf(stderr, "Cannot write metadata from %s: %s.\n",
370 path, strerror(error));
371 gctl_error(req, "Not fully done.");
375 printf("Provider %s activated.\n", path);