2 * Copyright (c) 2004-2009 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>
41 #include <geom/mirror/g_mirror.h>
42 #include <core/geom.h>
43 #include <misc/subr.h>
45 uint32_t lib_version = G_LIB_VERSION;
46 uint32_t version = G_MIRROR_VERSION;
48 #define GMIRROR_BALANCE "load"
49 #define GMIRROR_SLICE "4096"
50 #define GMIRROR_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);
57 static void mirror_resize(struct gctl_req *req, unsigned flags);
59 struct g_command class_commands[] = {
60 { "activate", G_FLAG_VERBOSE, mirror_main, G_NULL_OPTS,
63 { "clear", G_FLAG_VERBOSE, mirror_main, G_NULL_OPTS,
66 { "configure", G_FLAG_VERBOSE, NULL,
68 { 'a', "autosync", NULL, G_TYPE_BOOL },
69 { 'b', "balance", "", G_TYPE_STRING },
70 { 'd', "dynamic", NULL, G_TYPE_BOOL },
71 { 'f', "failsync", NULL, G_TYPE_BOOL },
72 { 'F', "nofailsync", NULL, G_TYPE_BOOL },
73 { 'h', "hardcode", NULL, G_TYPE_BOOL },
74 { 'n', "noautosync", NULL, G_TYPE_BOOL },
75 { 'p', "priority", "-1", G_TYPE_NUMBER },
76 { 's', "slice", "-1", G_TYPE_NUMBER },
79 "[-adfFhnv] [-b balance] [-s slice] name\n"
80 "[-v] -p priority name prov"
82 { "deactivate", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
85 { "destroy", G_FLAG_VERBOSE, NULL,
87 { 'f', "force", NULL, G_TYPE_BOOL },
92 { "dump", 0, mirror_main, G_NULL_OPTS,
95 { "forget", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
98 { "label", G_FLAG_VERBOSE, mirror_main,
100 { 'b', "balance", GMIRROR_BALANCE, G_TYPE_STRING },
101 { 'F', "nofailsync", NULL, G_TYPE_BOOL },
102 { 'h', "hardcode", NULL, G_TYPE_BOOL },
103 { 'n', "noautosync", NULL, G_TYPE_BOOL },
104 { 's', "slice", GMIRROR_SLICE, G_TYPE_NUMBER },
107 "[-Fhnv] [-b balance] [-s slice] name prov ..."
109 { "insert", G_FLAG_VERBOSE, NULL,
111 { 'h', "hardcode", NULL, G_TYPE_BOOL },
112 { 'i', "inactive", NULL, G_TYPE_BOOL },
113 { 'p', "priority", GMIRROR_PRIORITY, G_TYPE_NUMBER },
116 "[-hiv] [-p priority] name prov ..."
118 { "rebuild", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
121 { "remove", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
124 { "resize", G_FLAG_VERBOSE, mirror_resize,
126 { 's', "size", "*", G_TYPE_STRING },
129 "[-s size] [-v] name"
131 { "stop", G_FLAG_VERBOSE, NULL,
133 { 'f', "force", NULL, G_TYPE_BOOL },
141 static int verbose = 0;
144 mirror_main(struct gctl_req *req, unsigned flags)
148 if ((flags & G_FLAG_VERBOSE) != 0)
151 name = gctl_get_ascii(req, "verb");
153 gctl_error(req, "No '%s' argument.", "verb");
156 if (strcmp(name, "label") == 0)
158 else if (strcmp(name, "clear") == 0)
160 else if (strcmp(name, "dump") == 0)
162 else if (strcmp(name, "activate") == 0)
163 mirror_activate(req);
165 gctl_error(req, "Unknown command: %s.", name);
169 mirror_label(struct gctl_req *req)
171 struct g_mirror_metadata md;
177 int error, i, nargs, bal, hardcode;
179 nargs = gctl_get_int(req, "nargs");
181 gctl_error(req, "Too few arguments.");
185 strlcpy(md.md_magic, G_MIRROR_MAGIC, sizeof(md.md_magic));
186 md.md_version = G_MIRROR_VERSION;
187 str = gctl_get_ascii(req, "arg0");
188 strlcpy(md.md_name, str, sizeof(md.md_name));
189 md.md_mid = arc4random();
190 md.md_all = nargs - 1;
195 md.md_sync_offset = 0;
196 val = gctl_get_intmax(req, "slice");
198 str = gctl_get_ascii(req, "balance");
199 bal = balance_id(str);
201 gctl_error(req, "Invalid balance algorithm.");
205 if (gctl_get_int(req, "noautosync"))
206 md.md_mflags |= G_MIRROR_DEVICE_FLAG_NOAUTOSYNC;
207 if (gctl_get_int(req, "nofailsync"))
208 md.md_mflags |= G_MIRROR_DEVICE_FLAG_NOFAILSYNC;
209 hardcode = gctl_get_int(req, "hardcode");
212 * Calculate sectorsize by finding least common multiple from
213 * sectorsizes of every disk and find the smallest mediasize.
217 for (i = 1; i < nargs; i++) {
221 str = gctl_get_ascii(req, "arg%d", i);
222 msize = g_get_mediasize(str);
223 ssize = g_get_sectorsize(str);
224 if (msize == 0 || ssize == 0) {
225 gctl_error(req, "Can't get informations about %s: %s.",
226 str, strerror(errno));
230 if (mediasize == 0 || (mediasize > 0 && msize < mediasize))
235 sectorsize = g_lcm(sectorsize, ssize);
237 md.md_mediasize = mediasize;
238 md.md_sectorsize = sectorsize;
239 md.md_mediasize -= (md.md_mediasize % md.md_sectorsize);
242 * Clear last sector first, to spoil all components if device exists.
244 for (i = 1; i < nargs; i++) {
245 str = gctl_get_ascii(req, "arg%d", i);
246 error = g_metadata_clear(str, NULL);
248 gctl_error(req, "Can't store metadata on %s: %s.", str,
255 * Ok, store metadata (use disk number as priority).
257 for (i = 1; i < nargs; i++) {
258 str = gctl_get_ascii(req, "arg%d", i);
259 md.md_did = arc4random();
260 md.md_priority = i - 1;
261 md.md_provsize = g_get_mediasize(str);
262 assert(md.md_provsize != 0);
264 bzero(md.md_provider, sizeof(md.md_provider));
266 if (strncmp(str, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
267 str += sizeof(_PATH_DEV) - 1;
268 strlcpy(md.md_provider, str, sizeof(md.md_provider));
270 mirror_metadata_encode(&md, sector);
271 error = g_metadata_store(str, sector, sizeof(sector));
273 fprintf(stderr, "Can't store metadata on %s: %s.\n",
274 str, strerror(error));
275 gctl_error(req, "Not fully done.");
279 printf("Metadata value stored on %s.\n", str);
284 mirror_clear(struct gctl_req *req)
289 nargs = gctl_get_int(req, "nargs");
291 gctl_error(req, "Too few arguments.");
295 for (i = 0; i < nargs; i++) {
296 name = gctl_get_ascii(req, "arg%d", i);
297 error = g_metadata_clear(name, G_MIRROR_MAGIC);
299 fprintf(stderr, "Can't clear metadata on %s: %s.\n",
300 name, strerror(error));
301 gctl_error(req, "Not fully done.");
305 printf("Metadata cleared on %s.\n", name);
310 mirror_dump(struct gctl_req *req)
312 struct g_mirror_metadata md, tmpmd;
316 nargs = gctl_get_int(req, "nargs");
318 gctl_error(req, "Too few arguments.");
322 for (i = 0; i < nargs; i++) {
323 name = gctl_get_ascii(req, "arg%d", i);
324 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd),
327 fprintf(stderr, "Can't read metadata from %s: %s.\n",
328 name, strerror(error));
329 gctl_error(req, "Not fully done.");
332 if (mirror_metadata_decode((u_char *)&tmpmd, &md) != 0) {
333 fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n",
335 gctl_error(req, "Not fully done.");
338 printf("Metadata on %s:\n", name);
339 mirror_metadata_dump(&md);
345 mirror_activate(struct gctl_req *req)
347 struct g_mirror_metadata md, tmpmd;
348 const char *name, *path;
351 nargs = gctl_get_int(req, "nargs");
353 gctl_error(req, "Too few arguments.");
356 name = gctl_get_ascii(req, "arg0");
358 for (i = 1; i < nargs; i++) {
359 path = gctl_get_ascii(req, "arg%d", i);
360 error = g_metadata_read(path, (u_char *)&tmpmd, sizeof(tmpmd),
363 fprintf(stderr, "Cannot read metadata from %s: %s.\n",
364 path, strerror(error));
365 gctl_error(req, "Not fully done.");
368 if (mirror_metadata_decode((u_char *)&tmpmd, &md) != 0) {
370 "MD5 hash mismatch for provider %s, skipping.\n",
372 gctl_error(req, "Not fully done.");
375 if (strcmp(md.md_name, name) != 0) {
377 "Provider %s is not the mirror %s component.\n",
379 gctl_error(req, "Not fully done.");
382 md.md_dflags &= ~G_MIRROR_DISK_FLAG_INACTIVE;
383 mirror_metadata_encode(&md, (u_char *)&tmpmd);
384 error = g_metadata_store(path, (u_char *)&tmpmd, sizeof(tmpmd));
386 fprintf(stderr, "Cannot write metadata from %s: %s.\n",
387 path, strerror(error));
388 gctl_error(req, "Not fully done.");
392 printf("Provider %s activated.\n", path);
396 static struct gclass *
397 find_class(struct gmesh *mesh, const char *name)
399 struct gclass *classp;
401 LIST_FOREACH(classp, &mesh->lg_class, lg_class) {
402 if (strcmp(classp->lg_name, name) == 0)
408 static struct ggeom *
409 find_geom(struct gclass *classp, const char *name)
413 LIST_FOREACH(gp, &classp->lg_geom, lg_geom) {
414 if (strcmp(gp->lg_name, name) == 0)
421 mirror_resize(struct gctl_req *req, unsigned flags __unused)
424 struct gclass *classp;
426 struct gprovider *pp;
427 struct gconsumer *cp;
433 nargs = gctl_get_int(req, "nargs");
435 gctl_error(req, "Too few arguments.");
438 error = geom_gettree(&mesh);
440 errc(EXIT_FAILURE, error, "Cannot get GEOM tree");
441 name = gctl_get_ascii(req, "class");
444 classp = find_class(&mesh, name);
446 errx(EXIT_FAILURE, "Class %s not found.", name);
447 name = gctl_get_ascii(req, "arg0");
450 gp = find_geom(classp, name);
452 errx(EXIT_FAILURE, "No such geom: %s.", name);
453 pp = LIST_FIRST(&gp->lg_provider);
455 errx(EXIT_FAILURE, "Provider of geom %s not found.", name);
456 size = pp->lg_mediasize;
457 name = gctl_get_ascii(req, "size");
459 errx(EXIT_FAILURE, "The size is not specified.");
461 #define CSZ(c) ((c)->lg_provider->lg_mediasize - \
462 (c)->lg_provider->lg_sectorsize)
463 /* Find the maximum possible size */
464 LIST_FOREACH(cp, &gp->lg_consumer, lg_consumer) {
468 LIST_FOREACH(cp, &gp->lg_consumer, lg_consumer) {
473 if (size == pp->lg_mediasize)
475 "Cannot expand provider %s\n",
478 error = g_parse_lba(name, pp->lg_sectorsize, &size);
480 errc(EXIT_FAILURE, error, "Invalid size param");
481 size *= pp->lg_sectorsize;
483 snprintf(ssize, sizeof(ssize), "%ju", (uintmax_t)size);
484 gctl_change_param(req, "size", -1, ssize);
485 geom_deletetree(&mesh);