diff options
Diffstat (limited to 'sys/geom/raid/g_raid_ctl.c')
| -rw-r--r-- | sys/geom/raid/g_raid_ctl.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/sys/geom/raid/g_raid_ctl.c b/sys/geom/raid/g_raid_ctl.c new file mode 100644 index 0000000..028aa94 --- /dev/null +++ b/sys/geom/raid/g_raid_ctl.c @@ -0,0 +1,217 @@ +/*- + * Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/bio.h> +#include <sys/sysctl.h> +#include <sys/malloc.h> +#include <sys/bitstring.h> +#include <vm/uma.h> +#include <machine/atomic.h> +#include <geom/geom.h> +#include <sys/proc.h> +#include <sys/kthread.h> +#include <geom/raid/g_raid.h> +#include "g_raid_md_if.h" + + +static struct g_raid_softc * +g_raid_find_node(struct g_class *mp, const char *name) +{ + struct g_raid_softc *sc; + struct g_geom *gp; + + LIST_FOREACH(gp, &mp->geom, geom) { + sc = gp->softc; + if (sc == NULL) + continue; + if (sc->sc_stopping != 0) + continue; + if (strcasecmp(sc->sc_name, name) == 0) + return (sc); + } + return (NULL); +} + +static void +g_raid_ctl_label(struct gctl_req *req, struct g_class *mp) +{ + struct g_geom *geom; + struct g_raid_softc *sc; + const char *format; + int *nargs; + int crstatus, ctlstatus; + char buf[64]; + + nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); + if (nargs == NULL) { + gctl_error(req, "No '%s' argument.", "nargs"); + return; + } + if (*nargs < 4) { + gctl_error(req, "Invalid number of arguments."); + return; + } + format = gctl_get_asciiparam(req, "arg0"); + if (format == NULL) { + gctl_error(req, "No format recieved."); + return; + } + crstatus = g_raid_create_node_format(format, &geom); + if (crstatus == G_RAID_MD_TASTE_FAIL) { + gctl_error(req, "Failed to create array with format '%s'.", + format); + return; + } + sc = (struct g_raid_softc *)geom->softc; + g_topology_unlock(); + sx_xlock(&sc->sc_lock); + ctlstatus = G_RAID_MD_CTL(sc->sc_md, req); + if (ctlstatus < 0) { + gctl_error(req, "Command failed: %d.", ctlstatus); + if (crstatus == G_RAID_MD_TASTE_NEW) + g_raid_destroy_node(sc, 0); + } else { + if (crstatus == G_RAID_MD_TASTE_NEW) + snprintf(buf, sizeof(buf), "%s created\n", sc->sc_name); + else + snprintf(buf, sizeof(buf), "%s reused\n", sc->sc_name); + gctl_set_param_err(req, "output", buf, strlen(buf) + 1); + } + sx_xunlock(&sc->sc_lock); + g_topology_lock(); +} + +static void +g_raid_ctl_stop(struct gctl_req *req, struct g_class *mp) +{ + struct g_raid_softc *sc; + const char *nodename; + int *nargs, *force; + int error, how; + + nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); + if (nargs == NULL) { + gctl_error(req, "No '%s' argument.", "nargs"); + return; + } + if (*nargs != 1) { + gctl_error(req, "Invalid number of arguments."); + return; + } + nodename = gctl_get_asciiparam(req, "arg0"); + if (nodename == NULL) { + gctl_error(req, "No array name recieved."); + return; + } + sc = g_raid_find_node(mp, nodename); + if (sc == NULL) { + gctl_error(req, "Array '%s' not found.", nodename); + return; + } + force = gctl_get_paraml(req, "force", sizeof(*force)); + if (force != NULL && *force) + how = G_RAID_DESTROY_HARD; + else + how = G_RAID_DESTROY_SOFT; + g_topology_unlock(); + sx_xlock(&sc->sc_lock); + error = g_raid_destroy(sc, how); + if (error != 0) + sx_xunlock(&sc->sc_lock); + g_topology_lock(); +} + +static void +g_raid_ctl_other(struct gctl_req *req, struct g_class *mp) +{ + struct g_raid_softc *sc; + const char *nodename; + int *nargs; + int ctlstatus; + + nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); + if (nargs == NULL) { + gctl_error(req, "No '%s' argument.", "nargs"); + return; + } + if (*nargs < 1) { + gctl_error(req, "Invalid number of arguments."); + return; + } + nodename = gctl_get_asciiparam(req, "arg0"); + if (nodename == NULL) { + gctl_error(req, "No array name recieved."); + return; + } + sc = g_raid_find_node(mp, nodename); + if (sc == NULL) { + gctl_error(req, "Array '%s' not found.", nodename); + return; + } + g_topology_unlock(); + sx_xlock(&sc->sc_lock); + if (sc->sc_md != NULL) { + ctlstatus = G_RAID_MD_CTL(sc->sc_md, req); + if (ctlstatus < 0) + gctl_error(req, "Command failed: %d.", ctlstatus); + } + sx_xunlock(&sc->sc_lock); + g_topology_lock(); +} + +void +g_raid_ctl(struct gctl_req *req, struct g_class *mp, const char *verb) +{ + uint32_t *version; + + g_topology_assert(); + + version = gctl_get_paraml(req, "version", sizeof(*version)); + if (version == NULL) { + gctl_error(req, "No '%s' argument.", "version"); + return; + } + if (*version != G_RAID_VERSION) { + gctl_error(req, "Userland and kernel parts are out of sync."); + return; + } + + if (strcmp(verb, "label") == 0) + g_raid_ctl_label(req, mp); + else if (strcmp(verb, "stop") == 0) + g_raid_ctl_stop(req, mp); + else + g_raid_ctl_other(req, mp); +} |
