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>
40 #include <geom/mirror/g_mirror.h>
41 #include <core/geom.h>
42 #include <misc/subr.h>
44 uint32_t lib_version = G_LIB_VERSION;
45 uint32_t version = G_MIRROR_VERSION;
47 #define GMIRROR_BALANCE "load"
48 #define GMIRROR_SLICE "4096"
49 #define GMIRROR_PRIORITY "0"
51 static void mirror_main(struct gctl_req *req, unsigned flags);
52 static void mirror_activate(struct gctl_req *req);
53 static void mirror_clear(struct gctl_req *req);
54 static void mirror_dump(struct gctl_req *req);
55 static void mirror_label(struct gctl_req *req);
57 struct g_command class_commands[] = {
58 { "activate", G_FLAG_VERBOSE, mirror_main, G_NULL_OPTS,
61 { "clear", G_FLAG_VERBOSE, mirror_main, G_NULL_OPTS,
64 { "configure", G_FLAG_VERBOSE, NULL,
66 { 'a', "autosync", NULL, G_TYPE_BOOL },
67 { 'b', "balance", "", G_TYPE_STRING },
68 { 'd', "dynamic", NULL, G_TYPE_BOOL },
69 { 'f', "failsync", NULL, G_TYPE_BOOL },
70 { 'F', "nofailsync", NULL, G_TYPE_BOOL },
71 { 'h', "hardcode", NULL, G_TYPE_BOOL },
72 { 'n', "noautosync", NULL, G_TYPE_BOOL },
73 { 'p', "priority", "-1", G_TYPE_NUMBER },
74 { 's', "slice", "-1", G_TYPE_NUMBER },
77 "[-adfFhnv] [-b balance] [-s slice] name\n"
78 "[-v] -p priority name prov"
80 { "deactivate", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
83 { "destroy", G_FLAG_VERBOSE, NULL,
85 { 'f', "force", NULL, G_TYPE_BOOL },
90 { "dump", 0, mirror_main, G_NULL_OPTS,
93 { "forget", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
96 { "label", G_FLAG_VERBOSE, mirror_main,
98 { 'b', "balance", GMIRROR_BALANCE, G_TYPE_STRING },
99 { 'F', "nofailsync", NULL, G_TYPE_BOOL },
100 { 'h', "hardcode", NULL, G_TYPE_BOOL },
101 { 'n', "noautosync", NULL, G_TYPE_BOOL },
102 { 's', "slice", GMIRROR_SLICE, G_TYPE_NUMBER },
105 "[-Fhnv] [-b balance] [-s slice] name prov ..."
107 { "insert", G_FLAG_VERBOSE, NULL,
109 { 'h', "hardcode", NULL, G_TYPE_BOOL },
110 { 'i', "inactive", NULL, G_TYPE_BOOL },
111 { 'p', "priority", GMIRROR_PRIORITY, G_TYPE_NUMBER },
114 "[-hiv] [-p priority] name prov ..."
116 { "rebuild", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
119 { "remove", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
122 { "stop", G_FLAG_VERBOSE, NULL,
124 { 'f', "force", NULL, G_TYPE_BOOL },
132 static int verbose = 0;
135 mirror_main(struct gctl_req *req, unsigned flags)
139 if ((flags & G_FLAG_VERBOSE) != 0)
142 name = gctl_get_ascii(req, "verb");
144 gctl_error(req, "No '%s' argument.", "verb");
147 if (strcmp(name, "label") == 0)
149 else if (strcmp(name, "clear") == 0)
151 else if (strcmp(name, "dump") == 0)
153 else if (strcmp(name, "activate") == 0)
154 mirror_activate(req);
156 gctl_error(req, "Unknown command: %s.", name);
160 mirror_label(struct gctl_req *req)
162 struct g_mirror_metadata md;
168 int error, i, nargs, bal, hardcode;
170 nargs = gctl_get_int(req, "nargs");
172 gctl_error(req, "Too few arguments.");
176 strlcpy(md.md_magic, G_MIRROR_MAGIC, sizeof(md.md_magic));
177 md.md_version = G_MIRROR_VERSION;
178 str = gctl_get_ascii(req, "arg0");
179 strlcpy(md.md_name, str, sizeof(md.md_name));
180 md.md_mid = arc4random();
181 md.md_all = nargs - 1;
186 md.md_sync_offset = 0;
187 val = gctl_get_intmax(req, "slice");
189 str = gctl_get_ascii(req, "balance");
190 bal = balance_id(str);
192 gctl_error(req, "Invalid balance algorithm.");
196 if (gctl_get_int(req, "noautosync"))
197 md.md_mflags |= G_MIRROR_DEVICE_FLAG_NOAUTOSYNC;
198 if (gctl_get_int(req, "nofailsync"))
199 md.md_mflags |= G_MIRROR_DEVICE_FLAG_NOFAILSYNC;
200 hardcode = gctl_get_int(req, "hardcode");
203 * Calculate sectorsize by finding least common multiple from
204 * sectorsizes of every disk and find the smallest mediasize.
208 for (i = 1; i < nargs; i++) {
212 str = gctl_get_ascii(req, "arg%d", i);
213 msize = g_get_mediasize(str);
214 ssize = g_get_sectorsize(str);
215 if (msize == 0 || ssize == 0) {
216 gctl_error(req, "Can't get informations about %s: %s.",
217 str, strerror(errno));
221 if (mediasize == 0 || (mediasize > 0 && msize < mediasize))
226 sectorsize = g_lcm(sectorsize, ssize);
228 md.md_mediasize = mediasize;
229 md.md_sectorsize = sectorsize;
230 md.md_mediasize -= (md.md_mediasize % md.md_sectorsize);
233 * Clear last sector first, to spoil all components if device exists.
235 for (i = 1; i < nargs; i++) {
236 str = gctl_get_ascii(req, "arg%d", i);
237 error = g_metadata_clear(str, NULL);
239 gctl_error(req, "Can't store metadata on %s: %s.", str,
246 * Ok, store metadata (use disk number as priority).
248 for (i = 1; i < nargs; i++) {
249 str = gctl_get_ascii(req, "arg%d", i);
250 md.md_did = arc4random();
251 md.md_priority = i - 1;
252 md.md_provsize = g_get_mediasize(str);
253 assert(md.md_provsize != 0);
255 bzero(md.md_provider, sizeof(md.md_provider));
257 if (strncmp(str, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
258 str += sizeof(_PATH_DEV) - 1;
259 strlcpy(md.md_provider, str, sizeof(md.md_provider));
261 mirror_metadata_encode(&md, sector);
262 error = g_metadata_store(str, sector, sizeof(sector));
264 fprintf(stderr, "Can't store metadata on %s: %s.\n",
265 str, strerror(error));
266 gctl_error(req, "Not fully done.");
270 printf("Metadata value stored on %s.\n", str);
275 mirror_clear(struct gctl_req *req)
280 nargs = gctl_get_int(req, "nargs");
282 gctl_error(req, "Too few arguments.");
286 for (i = 0; i < nargs; i++) {
287 name = gctl_get_ascii(req, "arg%d", i);
288 error = g_metadata_clear(name, G_MIRROR_MAGIC);
290 fprintf(stderr, "Can't clear metadata on %s: %s.\n",
291 name, strerror(error));
292 gctl_error(req, "Not fully done.");
296 printf("Metadata cleared on %s.\n", name);
301 mirror_dump(struct gctl_req *req)
303 struct g_mirror_metadata md, tmpmd;
307 nargs = gctl_get_int(req, "nargs");
309 gctl_error(req, "Too few arguments.");
313 for (i = 0; i < nargs; i++) {
314 name = gctl_get_ascii(req, "arg%d", i);
315 error = g_metadata_read(name, (u_char *)&tmpmd, sizeof(tmpmd),
318 fprintf(stderr, "Can't read metadata from %s: %s.\n",
319 name, strerror(error));
320 gctl_error(req, "Not fully done.");
323 if (mirror_metadata_decode((u_char *)&tmpmd, &md) != 0) {
324 fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n",
326 gctl_error(req, "Not fully done.");
329 printf("Metadata on %s:\n", name);
330 mirror_metadata_dump(&md);
336 mirror_activate(struct gctl_req *req)
338 struct g_mirror_metadata md, tmpmd;
339 const char *name, *path;
342 nargs = gctl_get_int(req, "nargs");
344 gctl_error(req, "Too few arguments.");
347 name = gctl_get_ascii(req, "arg0");
349 for (i = 1; i < nargs; i++) {
350 path = gctl_get_ascii(req, "arg%d", i);
351 error = g_metadata_read(path, (u_char *)&tmpmd, sizeof(tmpmd),
354 fprintf(stderr, "Cannot read metadata from %s: %s.\n",
355 path, strerror(error));
356 gctl_error(req, "Not fully done.");
359 if (mirror_metadata_decode((u_char *)&tmpmd, &md) != 0) {
361 "MD5 hash mismatch for provider %s, skipping.\n",
363 gctl_error(req, "Not fully done.");
366 if (strcmp(md.md_name, name) != 0) {
368 "Provider %s is not the mirror %s component.\n",
370 gctl_error(req, "Not fully done.");
373 md.md_dflags &= ~G_MIRROR_DISK_FLAG_INACTIVE;
374 mirror_metadata_encode(&md, (u_char *)&tmpmd);
375 error = g_metadata_store(path, (u_char *)&tmpmd, sizeof(tmpmd));
377 fprintf(stderr, "Cannot write metadata from %s: %s.\n",
378 path, strerror(error));
379 gctl_error(req, "Not fully done.");
383 printf("Provider %s activated.\n", path);