1 /*-
2 * Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/10.4/sys/geom/raid/g_raid_ctl.c 299497 2016-05-12 00:45:57Z pfg $");
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/kernel.h>
33 #include <sys/module.h>
34 #include <sys/lock.h>
35 #include <sys/mutex.h>
36 #include <sys/bio.h>
37 #include <sys/sysctl.h>
38 #include <sys/malloc.h>
39 #include <sys/bitstring.h>
40 #include <vm/uma.h>
41 #include <machine/atomic.h>
42 #include <geom/geom.h>
43 #include <sys/proc.h>
44 #include <sys/kthread.h>
45 #include <geom/raid/g_raid.h>
46 #include "g_raid_md_if.h"
47
48
49 static struct g_raid_softc *
50 g_raid_find_node(struct g_class *mp, const char *name)
51 {
52 struct g_raid_softc *sc;
53 struct g_geom *gp;
54 struct g_provider *pp;
55 struct g_raid_volume *vol;
56
57 /* Look for geom with specified name. */
58 LIST_FOREACH(gp, &mp->geom, geom) {
59 sc = gp->softc;
60 if (sc == NULL)
61 continue;
62 if (sc->sc_stopping != 0)
63 continue;
64 if (strcasecmp(sc->sc_name, name) == 0)
65 return (sc);
66 }
67
68 /* Look for provider with specified name. */
69 LIST_FOREACH(gp, &mp->geom, geom) {
70 sc = gp->softc;
71 if (sc == NULL)
72 continue;
73 if (sc->sc_stopping != 0)
74 continue;
75 LIST_FOREACH(pp, &gp->provider, provider) {
76 if (strcmp(pp->name, name) == 0)
77 return (sc);
78 if (strncmp(pp->name, "raid/", 5) == 0 &&
79 strcmp(pp->name + 5, name) == 0)
80 return (sc);
81 }
82 }
83
84 /* Look for volume with specified name. */
85 LIST_FOREACH(gp, &mp->geom, geom) {
86 sc = gp->softc;
87 if (sc == NULL)
88 continue;
89 if (sc->sc_stopping != 0)
90 continue;
91 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
92 if (strcmp(vol->v_name, name) == 0)
93 return (sc);
94 }
95 }
96 return (NULL);
97 }
98
99 static void
100 g_raid_ctl_label(struct gctl_req *req, struct g_class *mp)
101 {
102 struct g_geom *geom;
103 struct g_raid_softc *sc;
104 const char *format;
105 int *nargs;
106 int crstatus, ctlstatus;
107 char buf[64];
108
109 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
110 if (nargs == NULL) {
111 gctl_error(req, "No '%s' argument.", "nargs");
112 return;
113 }
114 if (*nargs < 4) {
115 gctl_error(req, "Invalid number of arguments.");
116 return;
117 }
118 format = gctl_get_asciiparam(req, "arg0");
119 if (format == NULL) {
120 gctl_error(req, "No format received.");
121 return;
122 }
123 crstatus = g_raid_create_node_format(format, req, &geom);
124 if (crstatus == G_RAID_MD_TASTE_FAIL) {
125 gctl_error(req, "Failed to create array with format '%s'.",
126 format);
127 return;
128 }
129 sc = (struct g_raid_softc *)geom->softc;
130 g_topology_unlock();
131 sx_xlock(&sc->sc_lock);
132 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req);
133 if (ctlstatus < 0) {
134 gctl_error(req, "Command failed: %d.", ctlstatus);
135 if (crstatus == G_RAID_MD_TASTE_NEW)
136 g_raid_destroy_node(sc, 0);
137 } else {
138 if (crstatus == G_RAID_MD_TASTE_NEW)
139 snprintf(buf, sizeof(buf), "%s created\n", sc->sc_name);
140 else
141 snprintf(buf, sizeof(buf), "%s reused\n", sc->sc_name);
142 gctl_set_param_err(req, "output", buf, strlen(buf) + 1);
143 }
144 sx_xunlock(&sc->sc_lock);
145 g_topology_lock();
146 }
147
148 static void
149 g_raid_ctl_stop(struct gctl_req *req, struct g_class *mp)
150 {
151 struct g_raid_softc *sc;
152 const char *nodename;
153 int *nargs, *force;
154 int error, how;
155
156 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
157 if (nargs == NULL) {
158 gctl_error(req, "No '%s' argument.", "nargs");
159 return;
160 }
161 if (*nargs != 1) {
162 gctl_error(req, "Invalid number of arguments.");
163 return;
164 }
165 nodename = gctl_get_asciiparam(req, "arg0");
166 if (nodename == NULL) {
167 gctl_error(req, "No array name received.");
168 return;
169 }
170 sc = g_raid_find_node(mp, nodename);
171 if (sc == NULL) {
172 gctl_error(req, "Array '%s' not found.", nodename);
173 return;
174 }
175 force = gctl_get_paraml(req, "force", sizeof(*force));
176 if (force != NULL && *force)
177 how = G_RAID_DESTROY_HARD;
178 else
179 how = G_RAID_DESTROY_SOFT;
180 g_topology_unlock();
181 sx_xlock(&sc->sc_lock);
182 error = g_raid_destroy(sc, how);
183 if (error != 0)
184 gctl_error(req, "Array is busy.");
185 g_topology_lock();
186 }
187
188 static void
189 g_raid_ctl_other(struct gctl_req *req, struct g_class *mp)
190 {
191 struct g_raid_softc *sc;
192 const char *nodename;
193 int *nargs;
194 int ctlstatus;
195
196 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
197 if (nargs == NULL) {
198 gctl_error(req, "No '%s' argument.", "nargs");
199 return;
200 }
201 if (*nargs < 1) {
202 gctl_error(req, "Invalid number of arguments.");
203 return;
204 }
205 nodename = gctl_get_asciiparam(req, "arg0");
206 if (nodename == NULL) {
207 gctl_error(req, "No array name received.");
208 return;
209 }
210 sc = g_raid_find_node(mp, nodename);
211 if (sc == NULL) {
212 gctl_error(req, "Array '%s' not found.", nodename);
213 return;
214 }
215 g_topology_unlock();
216 sx_xlock(&sc->sc_lock);
217 if (sc->sc_md != NULL) {
218 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req);
219 if (ctlstatus < 0)
220 gctl_error(req, "Command failed: %d.", ctlstatus);
221 }
222 sx_xunlock(&sc->sc_lock);
223 g_topology_lock();
224 }
225
226 void
227 g_raid_ctl(struct gctl_req *req, struct g_class *mp, const char *verb)
228 {
229 uint32_t *version;
230
231 g_topology_assert();
232
233 version = gctl_get_paraml(req, "version", sizeof(*version));
234 if (version == NULL) {
235 gctl_error(req, "No '%s' argument.", "version");
236 return;
237 }
238 if (*version != G_RAID_VERSION) {
239 gctl_error(req, "Userland and kernel parts are out of sync.");
240 return;
241 }
242
243 if (strcmp(verb, "label") == 0)
244 g_raid_ctl_label(req, mp);
245 else if (strcmp(verb, "stop") == 0)
246 g_raid_ctl_stop(req, mp);
247 else
248 g_raid_ctl_other(req, mp);
249 }
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