1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2010 Alexander Motin <[email protected]>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <sys/lock.h>
37 #include <sys/mutex.h>
38 #include <sys/bio.h>
39 #include <sys/sysctl.h>
40 #include <sys/malloc.h>
41 #include <sys/bitstring.h>
42 #include <vm/uma.h>
43 #include <machine/atomic.h>
44 #include <geom/geom.h>
45 #include <sys/proc.h>
46 #include <sys/kthread.h>
47 #include <geom/raid/g_raid.h>
48 #include "g_raid_md_if.h"
49
50
51 static struct g_raid_softc *
g_raid_find_node(struct g_class * mp,const char * name)52 g_raid_find_node(struct g_class *mp, const char *name)
53 {
54 struct g_raid_softc *sc;
55 struct g_geom *gp;
56 struct g_provider *pp;
57 struct g_raid_volume *vol;
58
59 /* Look for geom with specified name. */
60 LIST_FOREACH(gp, &mp->geom, geom) {
61 sc = gp->softc;
62 if (sc == NULL)
63 continue;
64 if (sc->sc_stopping != 0)
65 continue;
66 if (strcasecmp(sc->sc_name, name) == 0)
67 return (sc);
68 }
69
70 /* Look for provider with specified name. */
71 LIST_FOREACH(gp, &mp->geom, geom) {
72 sc = gp->softc;
73 if (sc == NULL)
74 continue;
75 if (sc->sc_stopping != 0)
76 continue;
77 LIST_FOREACH(pp, &gp->provider, provider) {
78 if (strcmp(pp->name, name) == 0)
79 return (sc);
80 if (strncmp(pp->name, "raid/", 5) == 0 &&
81 strcmp(pp->name + 5, name) == 0)
82 return (sc);
83 }
84 }
85
86 /* Look for volume with specified name. */
87 LIST_FOREACH(gp, &mp->geom, geom) {
88 sc = gp->softc;
89 if (sc == NULL)
90 continue;
91 if (sc->sc_stopping != 0)
92 continue;
93 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
94 if (strcmp(vol->v_name, name) == 0)
95 return (sc);
96 }
97 }
98 return (NULL);
99 }
100
101 static void
g_raid_ctl_label(struct gctl_req * req,struct g_class * mp)102 g_raid_ctl_label(struct gctl_req *req, struct g_class *mp)
103 {
104 struct g_geom *geom;
105 struct g_raid_softc *sc;
106 const char *format;
107 int *nargs;
108 int crstatus, ctlstatus;
109 char buf[64];
110
111 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
112 if (nargs == NULL) {
113 gctl_error(req, "No '%s' argument.", "nargs");
114 return;
115 }
116 if (*nargs < 4) {
117 gctl_error(req, "Invalid number of arguments.");
118 return;
119 }
120 format = gctl_get_asciiparam(req, "arg0");
121 if (format == NULL) {
122 gctl_error(req, "No format received.");
123 return;
124 }
125 crstatus = g_raid_create_node_format(format, req, &geom);
126 if (crstatus == G_RAID_MD_TASTE_FAIL) {
127 gctl_error(req, "Failed to create array with format '%s'.",
128 format);
129 return;
130 }
131 sc = (struct g_raid_softc *)geom->softc;
132 g_topology_unlock();
133 sx_xlock(&sc->sc_lock);
134 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req);
135 if (ctlstatus < 0) {
136 gctl_error(req, "Command failed: %d.", ctlstatus);
137 if (crstatus == G_RAID_MD_TASTE_NEW)
138 g_raid_destroy_node(sc, 0);
139 } else {
140 if (crstatus == G_RAID_MD_TASTE_NEW)
141 snprintf(buf, sizeof(buf), "%s created\n", sc->sc_name);
142 else
143 snprintf(buf, sizeof(buf), "%s reused\n", sc->sc_name);
144 gctl_set_param_err(req, "output", buf, strlen(buf) + 1);
145 }
146 sx_xunlock(&sc->sc_lock);
147 g_topology_lock();
148 }
149
150 static void
g_raid_ctl_stop(struct gctl_req * req,struct g_class * mp)151 g_raid_ctl_stop(struct gctl_req *req, struct g_class *mp)
152 {
153 struct g_raid_softc *sc;
154 const char *nodename;
155 int *nargs, *force;
156 int error, how;
157
158 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
159 if (nargs == NULL) {
160 gctl_error(req, "No '%s' argument.", "nargs");
161 return;
162 }
163 if (*nargs != 1) {
164 gctl_error(req, "Invalid number of arguments.");
165 return;
166 }
167 nodename = gctl_get_asciiparam(req, "arg0");
168 if (nodename == NULL) {
169 gctl_error(req, "No array name received.");
170 return;
171 }
172 sc = g_raid_find_node(mp, nodename);
173 if (sc == NULL) {
174 gctl_error(req, "Array '%s' not found.", nodename);
175 return;
176 }
177 force = gctl_get_paraml(req, "force", sizeof(*force));
178 if (force != NULL && *force)
179 how = G_RAID_DESTROY_HARD;
180 else
181 how = G_RAID_DESTROY_SOFT;
182 g_topology_unlock();
183 sx_xlock(&sc->sc_lock);
184 error = g_raid_destroy(sc, how);
185 if (error != 0)
186 gctl_error(req, "Array is busy.");
187 g_topology_lock();
188 }
189
190 static void
g_raid_ctl_other(struct gctl_req * req,struct g_class * mp)191 g_raid_ctl_other(struct gctl_req *req, struct g_class *mp)
192 {
193 struct g_raid_softc *sc;
194 const char *nodename;
195 int *nargs;
196 int ctlstatus;
197
198 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
199 if (nargs == NULL) {
200 gctl_error(req, "No '%s' argument.", "nargs");
201 return;
202 }
203 if (*nargs < 1) {
204 gctl_error(req, "Invalid number of arguments.");
205 return;
206 }
207 nodename = gctl_get_asciiparam(req, "arg0");
208 if (nodename == NULL) {
209 gctl_error(req, "No array name received.");
210 return;
211 }
212 sc = g_raid_find_node(mp, nodename);
213 if (sc == NULL) {
214 gctl_error(req, "Array '%s' not found.", nodename);
215 return;
216 }
217 g_topology_unlock();
218 sx_xlock(&sc->sc_lock);
219 if (sc->sc_md != NULL) {
220 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req);
221 if (ctlstatus < 0)
222 gctl_error(req, "Command failed: %d.", ctlstatus);
223 }
224 sx_xunlock(&sc->sc_lock);
225 g_topology_lock();
226 }
227
228 void
g_raid_ctl(struct gctl_req * req,struct g_class * mp,const char * verb)229 g_raid_ctl(struct gctl_req *req, struct g_class *mp, const char *verb)
230 {
231 uint32_t *version;
232
233 g_topology_assert();
234
235 version = gctl_get_paraml(req, "version", sizeof(*version));
236 if (version == NULL) {
237 gctl_error(req, "No '%s' argument.", "version");
238 return;
239 }
240 if (*version != G_RAID_VERSION) {
241 gctl_error(req, "Userland and kernel parts are out of sync.");
242 return;
243 }
244
245 if (strcmp(verb, "label") == 0)
246 g_raid_ctl_label(req, mp);
247 else if (strcmp(verb, "stop") == 0)
248 g_raid_ctl_stop(req, mp);
249 else
250 g_raid_ctl_other(req, mp);
251 }
252