250 lines
6.4 KiB
C
250 lines
6.4 KiB
C
/*-
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* Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/bio.h>
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#include <sys/sysctl.h>
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#include <sys/malloc.h>
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#include <sys/bitstring.h>
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#include <vm/uma.h>
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#include <machine/atomic.h>
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#include <geom/geom.h>
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#include <sys/proc.h>
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#include <sys/kthread.h>
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#include <geom/raid/g_raid.h>
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#include "g_raid_md_if.h"
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static struct g_raid_softc *
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g_raid_find_node(struct g_class *mp, const char *name)
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{
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struct g_raid_softc *sc;
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struct g_geom *gp;
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struct g_provider *pp;
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struct g_raid_volume *vol;
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/* Look for geom with specified name. */
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LIST_FOREACH(gp, &mp->geom, geom) {
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sc = gp->softc;
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if (sc == NULL)
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continue;
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if (sc->sc_stopping != 0)
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continue;
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if (strcasecmp(sc->sc_name, name) == 0)
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return (sc);
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}
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/* Look for provider with specified name. */
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LIST_FOREACH(gp, &mp->geom, geom) {
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sc = gp->softc;
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if (sc == NULL)
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continue;
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if (sc->sc_stopping != 0)
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continue;
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LIST_FOREACH(pp, &gp->provider, provider) {
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if (strcmp(pp->name, name) == 0)
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return (sc);
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if (strncmp(pp->name, "raid/", 5) == 0 &&
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strcmp(pp->name + 5, name) == 0)
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return (sc);
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}
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}
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/* Look for volume with specified name. */
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LIST_FOREACH(gp, &mp->geom, geom) {
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sc = gp->softc;
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if (sc == NULL)
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continue;
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if (sc->sc_stopping != 0)
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continue;
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TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
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if (strcmp(vol->v_name, name) == 0)
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return (sc);
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}
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}
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return (NULL);
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}
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static void
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g_raid_ctl_label(struct gctl_req *req, struct g_class *mp)
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{
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struct g_geom *geom;
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struct g_raid_softc *sc;
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const char *format;
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int *nargs;
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int crstatus, ctlstatus;
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char buf[64];
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs < 4) {
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gctl_error(req, "Invalid number of arguments.");
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return;
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}
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format = gctl_get_asciiparam(req, "arg0");
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if (format == NULL) {
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gctl_error(req, "No format received.");
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return;
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}
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crstatus = g_raid_create_node_format(format, req, &geom);
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if (crstatus == G_RAID_MD_TASTE_FAIL) {
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gctl_error(req, "Failed to create array with format '%s'.",
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format);
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return;
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}
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sc = (struct g_raid_softc *)geom->softc;
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g_topology_unlock();
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sx_xlock(&sc->sc_lock);
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ctlstatus = G_RAID_MD_CTL(sc->sc_md, req);
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if (ctlstatus < 0) {
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gctl_error(req, "Command failed: %d.", ctlstatus);
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if (crstatus == G_RAID_MD_TASTE_NEW)
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g_raid_destroy_node(sc, 0);
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} else {
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if (crstatus == G_RAID_MD_TASTE_NEW)
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snprintf(buf, sizeof(buf), "%s created\n", sc->sc_name);
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else
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snprintf(buf, sizeof(buf), "%s reused\n", sc->sc_name);
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gctl_set_param_err(req, "output", buf, strlen(buf) + 1);
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}
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sx_xunlock(&sc->sc_lock);
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g_topology_lock();
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}
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static void
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g_raid_ctl_stop(struct gctl_req *req, struct g_class *mp)
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{
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struct g_raid_softc *sc;
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const char *nodename;
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int *nargs, *force;
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int error, how;
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs != 1) {
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gctl_error(req, "Invalid number of arguments.");
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return;
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}
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nodename = gctl_get_asciiparam(req, "arg0");
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if (nodename == NULL) {
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gctl_error(req, "No array name received.");
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return;
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}
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sc = g_raid_find_node(mp, nodename);
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if (sc == NULL) {
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gctl_error(req, "Array '%s' not found.", nodename);
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return;
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}
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force = gctl_get_paraml(req, "force", sizeof(*force));
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if (force != NULL && *force)
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how = G_RAID_DESTROY_HARD;
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else
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how = G_RAID_DESTROY_SOFT;
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g_topology_unlock();
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sx_xlock(&sc->sc_lock);
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error = g_raid_destroy(sc, how);
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if (error != 0)
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gctl_error(req, "Array is busy.");
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g_topology_lock();
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}
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static void
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g_raid_ctl_other(struct gctl_req *req, struct g_class *mp)
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{
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struct g_raid_softc *sc;
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const char *nodename;
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int *nargs;
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int ctlstatus;
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs < 1) {
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gctl_error(req, "Invalid number of arguments.");
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return;
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}
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nodename = gctl_get_asciiparam(req, "arg0");
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if (nodename == NULL) {
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gctl_error(req, "No array name received.");
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return;
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}
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sc = g_raid_find_node(mp, nodename);
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if (sc == NULL) {
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gctl_error(req, "Array '%s' not found.", nodename);
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return;
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}
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g_topology_unlock();
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sx_xlock(&sc->sc_lock);
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if (sc->sc_md != NULL) {
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ctlstatus = G_RAID_MD_CTL(sc->sc_md, req);
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if (ctlstatus < 0)
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gctl_error(req, "Command failed: %d.", ctlstatus);
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}
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sx_xunlock(&sc->sc_lock);
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g_topology_lock();
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}
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void
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g_raid_ctl(struct gctl_req *req, struct g_class *mp, const char *verb)
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{
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uint32_t *version;
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g_topology_assert();
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version = gctl_get_paraml(req, "version", sizeof(*version));
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if (version == NULL) {
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gctl_error(req, "No '%s' argument.", "version");
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return;
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}
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if (*version != G_RAID_VERSION) {
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gctl_error(req, "Userland and kernel parts are out of sync.");
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return;
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}
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if (strcmp(verb, "label") == 0)
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g_raid_ctl_label(req, mp);
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else if (strcmp(verb, "stop") == 0)
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g_raid_ctl_stop(req, mp);
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else
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g_raid_ctl_other(req, mp);
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}
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