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 static struct g_raid_softc * 51 g_raid_find_node(struct g_class *mp, const char *name) 52 { 53 struct g_raid_softc *sc; 54 struct g_geom *gp; 55 struct g_provider *pp; 56 struct g_raid_volume *vol; 57 58 /* Look for geom with specified name. */ 59 LIST_FOREACH(gp, &mp->geom, geom) { 60 sc = gp->softc; 61 if (sc == NULL) 62 continue; 63 if (sc->sc_stopping != 0) 64 continue; 65 if (strcasecmp(sc->sc_name, name) == 0) 66 return (sc); 67 } 68 69 /* Look for provider with specified name. */ 70 LIST_FOREACH(gp, &mp->geom, geom) { 71 sc = gp->softc; 72 if (sc == NULL) 73 continue; 74 if (sc->sc_stopping != 0) 75 continue; 76 LIST_FOREACH(pp, &gp->provider, provider) { 77 if (strcmp(pp->name, name) == 0) 78 return (sc); 79 if (strncmp(pp->name, "raid/", 5) == 0 && 80 strcmp(pp->name + 5, name) == 0) 81 return (sc); 82 } 83 } 84 85 /* Look for volume with specified name. */ 86 LIST_FOREACH(gp, &mp->geom, geom) { 87 sc = gp->softc; 88 if (sc == NULL) 89 continue; 90 if (sc->sc_stopping != 0) 91 continue; 92 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 93 if (strcmp(vol->v_name, name) == 0) 94 return (sc); 95 } 96 } 97 return (NULL); 98 } 99 100 static void 101 g_raid_ctl_label(struct gctl_req *req, struct g_class *mp) 102 { 103 struct g_geom *geom; 104 struct g_raid_softc *sc; 105 const char *format; 106 int *nargs; 107 int crstatus, ctlstatus; 108 char buf[64]; 109 110 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 111 if (nargs == NULL) { 112 gctl_error(req, "No '%s' argument.", "nargs"); 113 return; 114 } 115 if (*nargs < 4) { 116 gctl_error(req, "Invalid number of arguments."); 117 return; 118 } 119 format = gctl_get_asciiparam(req, "arg0"); 120 if (format == NULL) { 121 gctl_error(req, "No format received."); 122 return; 123 } 124 crstatus = g_raid_create_node_format(format, req, &geom); 125 if (crstatus == G_RAID_MD_TASTE_FAIL) { 126 gctl_error(req, "Failed to create array with format '%s'.", 127 format); 128 return; 129 } 130 sc = (struct g_raid_softc *)geom->softc; 131 g_topology_unlock(); 132 sx_xlock(&sc->sc_lock); 133 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req); 134 if (ctlstatus < 0) { 135 gctl_error(req, "Command failed: %d.", ctlstatus); 136 if (crstatus == G_RAID_MD_TASTE_NEW) 137 g_raid_destroy_node(sc, 0); 138 } else { 139 if (crstatus == G_RAID_MD_TASTE_NEW) 140 snprintf(buf, sizeof(buf), "%s created\n", sc->sc_name); 141 else 142 snprintf(buf, sizeof(buf), "%s reused\n", sc->sc_name); 143 gctl_set_param_err(req, "output", buf, strlen(buf) + 1); 144 } 145 sx_xunlock(&sc->sc_lock); 146 g_topology_lock(); 147 } 148 149 static void 150 g_raid_ctl_stop(struct gctl_req *req, struct g_class *mp) 151 { 152 struct g_raid_softc *sc; 153 const char *nodename; 154 int *nargs, *force; 155 int error, how; 156 157 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 158 if (nargs == NULL) { 159 gctl_error(req, "No '%s' argument.", "nargs"); 160 return; 161 } 162 if (*nargs != 1) { 163 gctl_error(req, "Invalid number of arguments."); 164 return; 165 } 166 nodename = gctl_get_asciiparam(req, "arg0"); 167 if (nodename == NULL) { 168 gctl_error(req, "No array name received."); 169 return; 170 } 171 sc = g_raid_find_node(mp, nodename); 172 if (sc == NULL) { 173 gctl_error(req, "Array '%s' not found.", nodename); 174 return; 175 } 176 force = gctl_get_paraml(req, "force", sizeof(*force)); 177 if (force != NULL && *force) 178 how = G_RAID_DESTROY_HARD; 179 else 180 how = G_RAID_DESTROY_SOFT; 181 g_topology_unlock(); 182 sx_xlock(&sc->sc_lock); 183 error = g_raid_destroy(sc, how); 184 if (error != 0) 185 gctl_error(req, "Array is busy."); 186 g_topology_lock(); 187 } 188 189 static void 190 g_raid_ctl_other(struct gctl_req *req, struct g_class *mp) 191 { 192 struct g_raid_softc *sc; 193 const char *nodename; 194 int *nargs; 195 int ctlstatus; 196 197 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 198 if (nargs == NULL) { 199 gctl_error(req, "No '%s' argument.", "nargs"); 200 return; 201 } 202 if (*nargs < 1) { 203 gctl_error(req, "Invalid number of arguments."); 204 return; 205 } 206 nodename = gctl_get_asciiparam(req, "arg0"); 207 if (nodename == NULL) { 208 gctl_error(req, "No array name received."); 209 return; 210 } 211 sc = g_raid_find_node(mp, nodename); 212 if (sc == NULL) { 213 gctl_error(req, "Array '%s' not found.", nodename); 214 return; 215 } 216 g_topology_unlock(); 217 sx_xlock(&sc->sc_lock); 218 if (sc->sc_md != NULL) { 219 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req); 220 if (ctlstatus < 0) 221 gctl_error(req, "Command failed: %d.", ctlstatus); 222 } 223 sx_xunlock(&sc->sc_lock); 224 g_topology_lock(); 225 } 226 227 void 228 g_raid_ctl(struct gctl_req *req, struct g_class *mp, const char *verb) 229 { 230 uint32_t *version; 231 232 g_topology_assert(); 233 234 version = gctl_get_paraml(req, "version", sizeof(*version)); 235 if (version == NULL) { 236 gctl_error(req, "No '%s' argument.", "version"); 237 return; 238 } 239 if (*version != G_RAID_VERSION) { 240 gctl_error(req, "Userland and kernel parts are out of sync."); 241 return; 242 } 243 244 if (strcmp(verb, "label") == 0) 245 g_raid_ctl_label(req, mp); 246 else if (strcmp(verb, "stop") == 0) 247 g_raid_ctl_stop(req, mp); 248 else 249 g_raid_ctl_other(req, mp); 250 } 251