1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org> 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 * 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 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 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 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 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