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/9.1/sys/geom/raid/g_raid_ctl.c 235874 2012-05-24 02:34:03Z mav $");
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
55 LIST_FOREACH(gp, &mp->geom, geom) {
56 sc = gp->softc;
57 if (sc == NULL)
58 continue;
59 if (sc->sc_stopping != 0)
60 continue;
61 if (strcasecmp(sc->sc_name, name) == 0)
62 return (sc);
63 }
64 return (NULL);
65 }
66
67 static void
68 g_raid_ctl_label(struct gctl_req *req, struct g_class *mp)
69 {
70 struct g_geom *geom;
71 struct g_raid_softc *sc;
72 const char *format;
73 int *nargs;
74 int crstatus, ctlstatus;
75 char buf[64];
76
77 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
78 if (nargs == NULL) {
79 gctl_error(req, "No '%s' argument.", "nargs");
80 return;
81 }
82 if (*nargs < 4) {
83 gctl_error(req, "Invalid number of arguments.");
84 return;
85 }
86 format = gctl_get_asciiparam(req, "arg0");
87 if (format == NULL) {
88 gctl_error(req, "No format recieved.");
89 return;
90 }
91 crstatus = g_raid_create_node_format(format, req, &geom);
92 if (crstatus == G_RAID_MD_TASTE_FAIL) {
93 gctl_error(req, "Failed to create array with format '%s'.",
94 format);
95 return;
96 }
97 sc = (struct g_raid_softc *)geom->softc;
98 g_topology_unlock();
99 sx_xlock(&sc->sc_lock);
100 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req);
101 if (ctlstatus < 0) {
102 gctl_error(req, "Command failed: %d.", ctlstatus);
103 if (crstatus == G_RAID_MD_TASTE_NEW)
104 g_raid_destroy_node(sc, 0);
105 } else {
106 if (crstatus == G_RAID_MD_TASTE_NEW)
107 snprintf(buf, sizeof(buf), "%s created\n", sc->sc_name);
108 else
109 snprintf(buf, sizeof(buf), "%s reused\n", sc->sc_name);
110 gctl_set_param_err(req, "output", buf, strlen(buf) + 1);
111 }
112 sx_xunlock(&sc->sc_lock);
113 g_topology_lock();
114 }
115
116 static void
117 g_raid_ctl_stop(struct gctl_req *req, struct g_class *mp)
118 {
119 struct g_raid_softc *sc;
120 const char *nodename;
121 int *nargs, *force;
122 int error, how;
123
124 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
125 if (nargs == NULL) {
126 gctl_error(req, "No '%s' argument.", "nargs");
127 return;
128 }
129 if (*nargs != 1) {
130 gctl_error(req, "Invalid number of arguments.");
131 return;
132 }
133 nodename = gctl_get_asciiparam(req, "arg0");
134 if (nodename == NULL) {
135 gctl_error(req, "No array name recieved.");
136 return;
137 }
138 sc = g_raid_find_node(mp, nodename);
139 if (sc == NULL) {
140 gctl_error(req, "Array '%s' not found.", nodename);
141 return;
142 }
143 force = gctl_get_paraml(req, "force", sizeof(*force));
144 if (force != NULL && *force)
145 how = G_RAID_DESTROY_HARD;
146 else
147 how = G_RAID_DESTROY_SOFT;
148 g_topology_unlock();
149 sx_xlock(&sc->sc_lock);
150 error = g_raid_destroy(sc, how);
151 if (error != 0)
152 sx_xunlock(&sc->sc_lock);
153 g_topology_lock();
154 }
155
156 static void
157 g_raid_ctl_other(struct gctl_req *req, struct g_class *mp)
158 {
159 struct g_raid_softc *sc;
160 const char *nodename;
161 int *nargs;
162 int ctlstatus;
163
164 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
165 if (nargs == NULL) {
166 gctl_error(req, "No '%s' argument.", "nargs");
167 return;
168 }
169 if (*nargs < 1) {
170 gctl_error(req, "Invalid number of arguments.");
171 return;
172 }
173 nodename = gctl_get_asciiparam(req, "arg0");
174 if (nodename == NULL) {
175 gctl_error(req, "No array name recieved.");
176 return;
177 }
178 sc = g_raid_find_node(mp, nodename);
179 if (sc == NULL) {
180 gctl_error(req, "Array '%s' not found.", nodename);
181 return;
182 }
183 g_topology_unlock();
184 sx_xlock(&sc->sc_lock);
185 if (sc->sc_md != NULL) {
186 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req);
187 if (ctlstatus < 0)
188 gctl_error(req, "Command failed: %d.", ctlstatus);
189 }
190 sx_xunlock(&sc->sc_lock);
191 g_topology_lock();
192 }
193
194 void
195 g_raid_ctl(struct gctl_req *req, struct g_class *mp, const char *verb)
196 {
197 uint32_t *version;
198
199 g_topology_assert();
200
201 version = gctl_get_paraml(req, "version", sizeof(*version));
202 if (version == NULL) {
203 gctl_error(req, "No '%s' argument.", "version");
204 return;
205 }
206 if (*version != G_RAID_VERSION) {
207 gctl_error(req, "Userland and kernel parts are out of sync.");
208 return;
209 }
210
211 if (strcmp(verb, "label") == 0)
212 g_raid_ctl_label(req, mp);
213 else if (strcmp(verb, "stop") == 0)
214 g_raid_ctl_stop(req, mp);
215 else
216 g_raid_ctl_other(req, mp);
217 }
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