g_raid_ctl.c

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    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 }

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FreeBSD/Linux Kernel Cross Reference sys/geom/raid/g_raid_ctl.c

FreeBSD/Linux Kernel Cross Reference
sys/geom/raid/g_raid_ctl.c