7acb1dbb48
It is quite specific mode of operation without storing on-disk metadata. It can be useful in some cases in combination with some external control tools handling mirror creation and disks hot-plug. MFC after: 2 weeks Sponsored by: iXsystems, Inc.
1096 lines
28 KiB
C
1096 lines
28 KiB
C
/*-
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* Copyright (c) 2004-2009 Pawel Jakub Dawidek <pjd@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/limits.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/sbuf.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 <geom/geom_int.h>
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#include <sys/proc.h>
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#include <sys/kthread.h>
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#include <geom/mirror/g_mirror.h>
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static struct g_mirror_softc *
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g_mirror_find_device(struct g_class *mp, const char *name)
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{
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struct g_mirror_softc *sc;
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struct g_geom *gp;
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g_topology_lock();
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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_flags & G_MIRROR_DEVICE_FLAG_DESTROY) != 0)
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continue;
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if (strcmp(gp->name, name) == 0 ||
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strcmp(sc->sc_name, name) == 0) {
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g_topology_unlock();
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sx_xlock(&sc->sc_lock);
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return (sc);
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}
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}
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g_topology_unlock();
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return (NULL);
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}
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static struct g_mirror_disk *
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g_mirror_find_disk(struct g_mirror_softc *sc, const char *name)
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{
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struct g_mirror_disk *disk;
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sx_assert(&sc->sc_lock, SX_XLOCKED);
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if (strncmp(name, "/dev/", 5) == 0)
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name += 5;
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LIST_FOREACH(disk, &sc->sc_disks, d_next) {
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if (disk->d_consumer == NULL)
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continue;
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if (disk->d_consumer->provider == NULL)
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continue;
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if (strcmp(disk->d_consumer->provider->name, name) == 0)
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return (disk);
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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_mirror_ctl_configure(struct gctl_req *req, struct g_class *mp)
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{
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struct g_mirror_softc *sc;
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struct g_mirror_disk *disk;
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const char *name, *balancep, *prov;
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intmax_t *slicep, *priority;
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uint32_t slice;
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uint8_t balance;
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int *autosync, *noautosync, *failsync, *nofailsync, *hardcode, *dynamic;
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int *nargs, do_sync = 0, dirty = 1, do_priority = 0;
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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 && *nargs != 2) {
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gctl_error(req, "Invalid number of arguments.");
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return;
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}
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name = gctl_get_asciiparam(req, "arg0");
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if (name == NULL) {
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gctl_error(req, "No 'arg%u' argument.", 0);
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return;
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}
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balancep = gctl_get_asciiparam(req, "balance");
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if (balancep == NULL) {
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gctl_error(req, "No '%s' argument.", "balance");
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return;
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}
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autosync = gctl_get_paraml(req, "autosync", sizeof(*autosync));
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if (autosync == NULL) {
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gctl_error(req, "No '%s' argument.", "autosync");
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return;
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}
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noautosync = gctl_get_paraml(req, "noautosync", sizeof(*noautosync));
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if (noautosync == NULL) {
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gctl_error(req, "No '%s' argument.", "noautosync");
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return;
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}
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failsync = gctl_get_paraml(req, "failsync", sizeof(*failsync));
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if (failsync == NULL) {
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gctl_error(req, "No '%s' argument.", "failsync");
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return;
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}
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nofailsync = gctl_get_paraml(req, "nofailsync", sizeof(*nofailsync));
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if (nofailsync == NULL) {
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gctl_error(req, "No '%s' argument.", "nofailsync");
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return;
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}
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hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode));
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if (hardcode == NULL) {
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gctl_error(req, "No '%s' argument.", "hardcode");
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return;
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}
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dynamic = gctl_get_paraml(req, "dynamic", sizeof(*dynamic));
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if (dynamic == NULL) {
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gctl_error(req, "No '%s' argument.", "dynamic");
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return;
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}
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priority = gctl_get_paraml(req, "priority", sizeof(*priority));
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if (priority == NULL) {
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gctl_error(req, "No '%s' argument.", "priority");
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return;
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}
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if (*priority < -1 || *priority > 255) {
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gctl_error(req, "Priority range is 0 to 255, %jd given",
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*priority);
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return;
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}
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/*
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* Since we have a priority, we also need a provider now.
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* Note: be WARNS safe, by always assigning prov and only throw an
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* error if *priority != -1.
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*/
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prov = gctl_get_asciiparam(req, "arg1");
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if (*priority > -1) {
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if (prov == NULL) {
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gctl_error(req, "Priority needs a disk name");
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return;
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}
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do_priority = 1;
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}
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if (*autosync && *noautosync) {
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gctl_error(req, "'%s' and '%s' specified.", "autosync",
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"noautosync");
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return;
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}
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if (*failsync && *nofailsync) {
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gctl_error(req, "'%s' and '%s' specified.", "failsync",
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"nofailsync");
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return;
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}
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if (*hardcode && *dynamic) {
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gctl_error(req, "'%s' and '%s' specified.", "hardcode",
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"dynamic");
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return;
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}
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sc = g_mirror_find_device(mp, name);
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if (sc == NULL) {
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gctl_error(req, "No such device: %s.", name);
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return;
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}
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if (*balancep == '\0')
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balance = sc->sc_balance;
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else {
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if (balance_id(balancep) == -1) {
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gctl_error(req, "Invalid balance algorithm.");
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sx_xunlock(&sc->sc_lock);
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return;
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}
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balance = balance_id(balancep);
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}
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slicep = gctl_get_paraml(req, "slice", sizeof(*slicep));
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if (slicep == NULL) {
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gctl_error(req, "No '%s' argument.", "slice");
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sx_xunlock(&sc->sc_lock);
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return;
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}
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if (*slicep == -1)
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slice = sc->sc_slice;
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else
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slice = *slicep;
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/* Enforce usage() of -p not allowing any other options. */
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if (do_priority && (*autosync || *noautosync || *failsync ||
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*nofailsync || *hardcode || *dynamic || *slicep != -1 ||
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*balancep != '\0')) {
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sx_xunlock(&sc->sc_lock);
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gctl_error(req, "only -p accepted when setting priority");
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return;
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}
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if (sc->sc_balance == balance && sc->sc_slice == slice && !*autosync &&
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!*noautosync && !*failsync && !*nofailsync && !*hardcode &&
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!*dynamic && !do_priority) {
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sx_xunlock(&sc->sc_lock);
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gctl_error(req, "Nothing has changed.");
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return;
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}
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if ((!do_priority && *nargs != 1) || (do_priority && *nargs != 2)) {
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sx_xunlock(&sc->sc_lock);
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gctl_error(req, "Invalid number of arguments.");
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return;
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}
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if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) {
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sx_xunlock(&sc->sc_lock);
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gctl_error(req, "Not all disks connected. Try 'forget' command "
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"first.");
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return;
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}
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sc->sc_balance = balance;
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sc->sc_slice = slice;
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if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0) {
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if (*autosync) {
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sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_NOAUTOSYNC;
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do_sync = 1;
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}
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} else {
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if (*noautosync)
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sc->sc_flags |= G_MIRROR_DEVICE_FLAG_NOAUTOSYNC;
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}
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if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) != 0) {
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if (*failsync)
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sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_NOFAILSYNC;
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} else {
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if (*nofailsync) {
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sc->sc_flags |= G_MIRROR_DEVICE_FLAG_NOFAILSYNC;
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dirty = 0;
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}
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}
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LIST_FOREACH(disk, &sc->sc_disks, d_next) {
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/*
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* Handle priority first, since we only need one disk, do one
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* operation on it and then we're done. No need to check other
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* flags, as usage doesn't allow it.
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*/
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if (do_priority) {
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if (strcmp(disk->d_name, prov) == 0) {
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if (disk->d_priority == *priority)
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gctl_error(req, "Nothing has changed.");
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else {
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disk->d_priority = *priority;
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g_mirror_update_metadata(disk);
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}
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break;
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}
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continue;
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}
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if (do_sync) {
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if (disk->d_state == G_MIRROR_DISK_STATE_SYNCHRONIZING)
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disk->d_flags &= ~G_MIRROR_DISK_FLAG_FORCE_SYNC;
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}
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if (*hardcode)
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disk->d_flags |= G_MIRROR_DISK_FLAG_HARDCODED;
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else if (*dynamic)
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disk->d_flags &= ~G_MIRROR_DISK_FLAG_HARDCODED;
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if (!dirty)
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disk->d_flags &= ~G_MIRROR_DISK_FLAG_DIRTY;
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g_mirror_update_metadata(disk);
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if (do_sync) {
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if (disk->d_state == G_MIRROR_DISK_STATE_STALE) {
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g_mirror_event_send(disk,
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G_MIRROR_DISK_STATE_DISCONNECTED,
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G_MIRROR_EVENT_DONTWAIT);
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}
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}
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}
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sx_xunlock(&sc->sc_lock);
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}
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static void
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g_mirror_create_orphan(struct g_consumer *cp)
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{
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KASSERT(1 == 0, ("%s called while creating %s.", __func__,
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cp->provider->name));
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}
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static void
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g_mirror_ctl_create(struct gctl_req *req, struct g_class *mp)
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{
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struct g_mirror_metadata md;
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struct g_geom *gp;
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struct g_consumer *cp;
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struct g_provider *pp;
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struct g_mirror_softc *sc;
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struct sbuf *sb;
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const char *name;
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char param[16];
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int *nargs;
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intmax_t *val;
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int *ival;
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const char *sval;
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int bal;
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unsigned attached, no, sectorsize;
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off_t mediasize;
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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 <= 2) {
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gctl_error(req, "Too few arguments.");
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return;
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}
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strlcpy(md.md_magic, G_MIRROR_MAGIC, sizeof(md.md_magic));
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md.md_version = G_MIRROR_VERSION;
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name = gctl_get_asciiparam(req, "arg0");
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if (name == NULL) {
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gctl_error(req, "No 'arg%u' argument.", 0);
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return;
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}
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strlcpy(md.md_name, name, sizeof(md.md_name));
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md.md_mid = arc4random();
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md.md_all = *nargs - 1;
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md.md_genid = 0;
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md.md_syncid = 1;
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md.md_sync_offset = 0;
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val = gctl_get_paraml(req, "slice", sizeof(*val));
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if (val == NULL) {
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gctl_error(req, "No slice argument.");
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return;
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}
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md.md_slice = *val;
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sval = gctl_get_asciiparam(req, "balance");
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if (sval == NULL) {
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gctl_error(req, "No balance argument.");
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return;
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}
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bal = balance_id(sval);
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if (bal < 0) {
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gctl_error(req, "Invalid balance algorithm.");
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return;
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}
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md.md_balance = bal;
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md.md_mflags = 0;
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md.md_dflags = 0;
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ival = gctl_get_paraml(req, "noautosync", sizeof(*ival));
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if (ival != NULL && *ival)
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md.md_mflags |= G_MIRROR_DEVICE_FLAG_NOAUTOSYNC;
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ival = gctl_get_paraml(req, "nofailsync", sizeof(*ival));
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if (ival != NULL && *ival)
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md.md_mflags |= G_MIRROR_DEVICE_FLAG_NOFAILSYNC;
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/* These fields not used in manual mode. */
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bzero(md.md_provider, sizeof(md.md_provider));
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md.md_provsize = 0;
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g_topology_lock();
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mediasize = OFF_MAX;
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sectorsize = 0;
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gp = g_new_geomf(mp, "%s", md.md_name);
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gp->orphan = g_mirror_create_orphan;
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cp = g_new_consumer(gp);
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for (no = 1; no < *nargs; no++) {
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snprintf(param, sizeof(param), "arg%u", no);
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name = gctl_get_asciiparam(req, param);
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if (name == NULL) {
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gctl_error(req, "No 'arg%u' argument.", no);
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err:
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g_destroy_consumer(cp);
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g_destroy_geom(gp);
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g_topology_unlock();
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return;
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}
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if (strncmp(name, "/dev/", strlen("/dev/")) == 0)
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name += strlen("/dev/");
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pp = g_provider_by_name(name);
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if (pp == NULL) {
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G_MIRROR_DEBUG(1, "Disk %s is invalid.", name);
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gctl_error(req, "Disk %s is invalid.", name);
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goto err;
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}
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g_attach(cp, pp);
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if (g_access(cp, 1, 0, 0) != 0) {
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G_MIRROR_DEBUG(1, "Can't open disk %s.", name);
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gctl_error(req, "Can't open disk %s.", name);
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err2:
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g_detach(cp);
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goto err;
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}
|
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if (pp->mediasize == 0 || pp->sectorsize == 0) {
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G_MIRROR_DEBUG(1, "Disk %s has no media.", name);
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gctl_error(req, "Disk %s has no media.", name);
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g_access(cp, -1, 0, 0);
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goto err2;
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}
|
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if (pp->mediasize < mediasize)
|
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mediasize = pp->mediasize;
|
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if (pp->sectorsize > sectorsize)
|
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sectorsize = pp->sectorsize;
|
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g_access(cp, -1, 0, 0);
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g_detach(cp);
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}
|
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g_destroy_consumer(cp);
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g_destroy_geom(gp);
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|
md.md_mediasize = mediasize;
|
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md.md_sectorsize = sectorsize;
|
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md.md_mediasize -= (md.md_mediasize % md.md_sectorsize);
|
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|
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gp = g_mirror_create(mp, &md, G_MIRROR_TYPE_MANUAL);
|
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if (gp == NULL) {
|
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gctl_error(req, "Can't create %s.", md.md_name);
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g_topology_unlock();
|
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return;
|
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}
|
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|
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sc = gp->softc;
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g_topology_unlock();
|
|
sx_xlock(&sc->sc_lock);
|
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sc->sc_flags |= G_MIRROR_DEVICE_FLAG_TASTING;
|
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sb = sbuf_new_auto();
|
|
sbuf_printf(sb, "Can't attach disk(s) to %s:", gp->name);
|
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for (attached = 0, no = 1; no < *nargs; no++) {
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snprintf(param, sizeof(param), "arg%u", no);
|
|
name = gctl_get_asciiparam(req, param);
|
|
if (strncmp(name, "/dev/", strlen("/dev/")) == 0)
|
|
name += strlen("/dev/");
|
|
pp = g_provider_by_name(name);
|
|
if (pp == NULL) {
|
|
G_MIRROR_DEBUG(1, "Provider %s disappear?!", name);
|
|
sbuf_printf(sb, " %s", name);
|
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continue;
|
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}
|
|
md.md_did = arc4random();
|
|
md.md_priority = no - 1;
|
|
if (g_mirror_add_disk(sc, pp, &md) != 0) {
|
|
G_MIRROR_DEBUG(1, "Disk %u (%s) not attached to %s.",
|
|
no, pp->name, gp->name);
|
|
sbuf_printf(sb, " %s", pp->name);
|
|
continue;
|
|
}
|
|
attached++;
|
|
}
|
|
sbuf_finish(sb);
|
|
sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_TASTING;
|
|
if (md.md_all != attached ||
|
|
(sc->sc_flags & G_MIRROR_DEVICE_FLAG_DESTROY) != 0) {
|
|
g_mirror_destroy(gp->softc, G_MIRROR_DESTROY_HARD);
|
|
gctl_error(req, "%s", sbuf_data(sb));
|
|
} else
|
|
sx_xunlock(&sc->sc_lock);
|
|
sbuf_delete(sb);
|
|
}
|
|
|
|
static void
|
|
g_mirror_ctl_rebuild(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
struct g_mirror_metadata md;
|
|
struct g_mirror_softc *sc;
|
|
struct g_mirror_disk *disk;
|
|
struct g_provider *pp;
|
|
const char *name;
|
|
char param[16];
|
|
int error, *nargs;
|
|
u_int i;
|
|
|
|
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
|
|
if (nargs == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "nargs");
|
|
return;
|
|
}
|
|
if (*nargs < 2) {
|
|
gctl_error(req, "Too few arguments.");
|
|
return;
|
|
}
|
|
name = gctl_get_asciiparam(req, "arg0");
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", 0);
|
|
return;
|
|
}
|
|
sc = g_mirror_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "No such device: %s.", name);
|
|
return;
|
|
}
|
|
for (i = 1; i < (u_int)*nargs; i++) {
|
|
snprintf(param, sizeof(param), "arg%u", i);
|
|
name = gctl_get_asciiparam(req, param);
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", i);
|
|
continue;
|
|
}
|
|
disk = g_mirror_find_disk(sc, name);
|
|
if (disk == NULL) {
|
|
gctl_error(req, "No such provider: %s.", name);
|
|
continue;
|
|
}
|
|
if (g_mirror_ndisks(sc, G_MIRROR_DISK_STATE_ACTIVE) == 1 &&
|
|
disk->d_state == G_MIRROR_DISK_STATE_ACTIVE) {
|
|
/*
|
|
* This is the last active disk. There will be nothing
|
|
* to rebuild it from, so deny this request.
|
|
*/
|
|
gctl_error(req,
|
|
"Provider %s is the last active provider in %s.",
|
|
name, sc->sc_geom->name);
|
|
break;
|
|
}
|
|
/*
|
|
* Do rebuild by resetting syncid, disconnecting the disk and
|
|
* connecting it again.
|
|
*/
|
|
disk->d_sync.ds_syncid = 0;
|
|
if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0)
|
|
disk->d_flags |= G_MIRROR_DISK_FLAG_FORCE_SYNC;
|
|
g_mirror_update_metadata(disk);
|
|
pp = disk->d_consumer->provider;
|
|
g_topology_lock();
|
|
error = g_mirror_read_metadata(disk->d_consumer, &md);
|
|
g_topology_unlock();
|
|
g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DISCONNECTED,
|
|
G_MIRROR_EVENT_WAIT);
|
|
if (error != 0) {
|
|
gctl_error(req, "Cannot read metadata from %s.",
|
|
pp->name);
|
|
continue;
|
|
}
|
|
error = g_mirror_add_disk(sc, pp, &md);
|
|
if (error != 0) {
|
|
gctl_error(req, "Cannot reconnect component %s.",
|
|
pp->name);
|
|
continue;
|
|
}
|
|
}
|
|
sx_xunlock(&sc->sc_lock);
|
|
}
|
|
|
|
static void
|
|
g_mirror_ctl_insert(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
struct g_mirror_softc *sc;
|
|
struct g_mirror_disk *disk;
|
|
struct g_mirror_metadata md;
|
|
struct g_provider *pp;
|
|
struct g_consumer *cp;
|
|
intmax_t *priority;
|
|
const char *name;
|
|
char param[16];
|
|
u_char *sector;
|
|
u_int i, n;
|
|
int error, *nargs, *hardcode, *inactive;
|
|
struct {
|
|
struct g_provider *provider;
|
|
struct g_consumer *consumer;
|
|
} *disks;
|
|
off_t mdsize;
|
|
|
|
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
|
|
if (nargs == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "nargs");
|
|
return;
|
|
}
|
|
if (*nargs < 2) {
|
|
gctl_error(req, "Too few arguments.");
|
|
return;
|
|
}
|
|
priority = gctl_get_paraml(req, "priority", sizeof(*priority));
|
|
if (priority == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "priority");
|
|
return;
|
|
}
|
|
inactive = gctl_get_paraml(req, "inactive", sizeof(*inactive));
|
|
if (inactive == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "inactive");
|
|
return;
|
|
}
|
|
hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode));
|
|
if (hardcode == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "hardcode");
|
|
return;
|
|
}
|
|
name = gctl_get_asciiparam(req, "arg0");
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", 0);
|
|
return;
|
|
}
|
|
sc = g_mirror_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "No such device: %s.", name);
|
|
return;
|
|
}
|
|
if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) {
|
|
gctl_error(req, "Not all disks connected.");
|
|
sx_xunlock(&sc->sc_lock);
|
|
return;
|
|
}
|
|
|
|
disks = g_malloc(sizeof(*disks) * (*nargs), M_WAITOK | M_ZERO);
|
|
g_topology_lock();
|
|
for (i = 1, n = 0; i < (u_int)*nargs; i++) {
|
|
snprintf(param, sizeof(param), "arg%u", i);
|
|
name = gctl_get_asciiparam(req, param);
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", i);
|
|
continue;
|
|
}
|
|
if (g_mirror_find_disk(sc, name) != NULL) {
|
|
gctl_error(req, "Provider %s already inserted.", name);
|
|
continue;
|
|
}
|
|
if (strncmp(name, "/dev/", 5) == 0)
|
|
name += 5;
|
|
pp = g_provider_by_name(name);
|
|
if (pp == NULL) {
|
|
gctl_error(req, "Unknown provider %s.", name);
|
|
continue;
|
|
}
|
|
cp = g_new_consumer(sc->sc_geom);
|
|
if (g_attach(cp, pp) != 0) {
|
|
g_destroy_consumer(cp);
|
|
gctl_error(req, "Cannot attach to provider %s.", name);
|
|
continue;
|
|
}
|
|
if (g_access(cp, 0, 1, 1) != 0) {
|
|
gctl_error(req, "Cannot access provider %s.", name);
|
|
err:
|
|
g_detach(cp);
|
|
g_destroy_consumer(cp);
|
|
continue;
|
|
}
|
|
mdsize = (sc->sc_type == G_MIRROR_TYPE_AUTOMATIC) ?
|
|
pp->sectorsize : 0;
|
|
if (sc->sc_provider->mediasize > pp->mediasize - mdsize) {
|
|
gctl_error(req, "Provider %s too small.", name);
|
|
err2:
|
|
g_access(cp, 0, -1, -1);
|
|
goto err;
|
|
}
|
|
if ((sc->sc_provider->sectorsize % pp->sectorsize) != 0) {
|
|
gctl_error(req, "Invalid sectorsize of provider %s.",
|
|
name);
|
|
goto err2;
|
|
}
|
|
if (sc->sc_type != G_MIRROR_TYPE_AUTOMATIC) {
|
|
g_access(cp, 0, -1, -1);
|
|
g_detach(cp);
|
|
g_destroy_consumer(cp);
|
|
g_topology_unlock();
|
|
sc->sc_ndisks++;
|
|
g_mirror_fill_metadata(sc, NULL, &md);
|
|
md.md_priority = *priority;
|
|
if (*inactive)
|
|
md.md_dflags |= G_MIRROR_DISK_FLAG_INACTIVE;
|
|
if (g_mirror_add_disk(sc, pp, &md) != 0) {
|
|
sc->sc_ndisks--;
|
|
gctl_error(req, "Disk %s not inserted.", name);
|
|
}
|
|
g_topology_lock();
|
|
continue;
|
|
}
|
|
disks[n].provider = pp;
|
|
disks[n].consumer = cp;
|
|
n++;
|
|
}
|
|
if (n == 0) {
|
|
g_topology_unlock();
|
|
sx_xunlock(&sc->sc_lock);
|
|
g_free(disks);
|
|
return;
|
|
}
|
|
sc->sc_ndisks += n;
|
|
again:
|
|
for (i = 0; i < n; i++) {
|
|
if (disks[i].consumer == NULL)
|
|
continue;
|
|
g_mirror_fill_metadata(sc, NULL, &md);
|
|
md.md_priority = *priority;
|
|
if (*inactive)
|
|
md.md_dflags |= G_MIRROR_DISK_FLAG_INACTIVE;
|
|
pp = disks[i].provider;
|
|
if (*hardcode) {
|
|
strlcpy(md.md_provider, pp->name,
|
|
sizeof(md.md_provider));
|
|
} else {
|
|
bzero(md.md_provider, sizeof(md.md_provider));
|
|
}
|
|
md.md_provsize = pp->mediasize;
|
|
sector = g_malloc(pp->sectorsize, M_WAITOK);
|
|
mirror_metadata_encode(&md, sector);
|
|
error = g_write_data(disks[i].consumer,
|
|
pp->mediasize - pp->sectorsize, sector, pp->sectorsize);
|
|
g_free(sector);
|
|
if (error != 0) {
|
|
gctl_error(req, "Cannot store metadata on %s.",
|
|
pp->name);
|
|
g_access(disks[i].consumer, 0, -1, -1);
|
|
g_detach(disks[i].consumer);
|
|
g_destroy_consumer(disks[i].consumer);
|
|
disks[i].consumer = NULL;
|
|
disks[i].provider = NULL;
|
|
sc->sc_ndisks--;
|
|
goto again;
|
|
}
|
|
}
|
|
g_topology_unlock();
|
|
if (i == 0) {
|
|
/* All writes failed. */
|
|
sx_xunlock(&sc->sc_lock);
|
|
g_free(disks);
|
|
return;
|
|
}
|
|
LIST_FOREACH(disk, &sc->sc_disks, d_next) {
|
|
g_mirror_update_metadata(disk);
|
|
}
|
|
/*
|
|
* Release provider and wait for retaste.
|
|
*/
|
|
g_topology_lock();
|
|
for (i = 0; i < n; i++) {
|
|
if (disks[i].consumer == NULL)
|
|
continue;
|
|
g_access(disks[i].consumer, 0, -1, -1);
|
|
g_detach(disks[i].consumer);
|
|
g_destroy_consumer(disks[i].consumer);
|
|
}
|
|
g_topology_unlock();
|
|
sx_xunlock(&sc->sc_lock);
|
|
g_free(disks);
|
|
}
|
|
|
|
static void
|
|
g_mirror_ctl_remove(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
struct g_mirror_softc *sc;
|
|
struct g_mirror_disk *disk;
|
|
const char *name;
|
|
char param[16];
|
|
int *nargs;
|
|
u_int i, active;
|
|
|
|
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
|
|
if (nargs == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "nargs");
|
|
return;
|
|
}
|
|
if (*nargs < 2) {
|
|
gctl_error(req, "Too few arguments.");
|
|
return;
|
|
}
|
|
name = gctl_get_asciiparam(req, "arg0");
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", 0);
|
|
return;
|
|
}
|
|
sc = g_mirror_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "No such device: %s.", name);
|
|
return;
|
|
}
|
|
if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) {
|
|
sx_xunlock(&sc->sc_lock);
|
|
gctl_error(req, "Not all disks connected. Try 'forget' command "
|
|
"first.");
|
|
return;
|
|
}
|
|
active = g_mirror_ndisks(sc, G_MIRROR_DISK_STATE_ACTIVE);
|
|
for (i = 1; i < (u_int)*nargs; i++) {
|
|
snprintf(param, sizeof(param), "arg%u", i);
|
|
name = gctl_get_asciiparam(req, param);
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", i);
|
|
continue;
|
|
}
|
|
disk = g_mirror_find_disk(sc, name);
|
|
if (disk == NULL) {
|
|
gctl_error(req, "No such provider: %s.", name);
|
|
continue;
|
|
}
|
|
if (disk->d_state == G_MIRROR_DISK_STATE_ACTIVE) {
|
|
if (active > 1)
|
|
active--;
|
|
else {
|
|
gctl_error(req, "%s: Can't remove the last "
|
|
"ACTIVE component %s.", sc->sc_geom->name,
|
|
name);
|
|
continue;
|
|
}
|
|
}
|
|
g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DESTROY,
|
|
G_MIRROR_EVENT_DONTWAIT);
|
|
}
|
|
sx_xunlock(&sc->sc_lock);
|
|
}
|
|
|
|
static void
|
|
g_mirror_ctl_resize(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
struct g_mirror_softc *sc;
|
|
struct g_mirror_disk *disk;
|
|
uint64_t mediasize;
|
|
const char *name, *s;
|
|
char *x;
|
|
int *nargs;
|
|
|
|
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, "Missing device.");
|
|
return;
|
|
}
|
|
name = gctl_get_asciiparam(req, "arg0");
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", 0);
|
|
return;
|
|
}
|
|
s = gctl_get_asciiparam(req, "size");
|
|
if (s == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "size");
|
|
return;
|
|
}
|
|
mediasize = strtouq(s, &x, 0);
|
|
if (*x != '\0' || mediasize == 0) {
|
|
gctl_error(req, "Invalid '%s' argument.", "size");
|
|
return;
|
|
}
|
|
sc = g_mirror_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "No such device: %s.", name);
|
|
return;
|
|
}
|
|
/* Deny shrinking of an opened provider */
|
|
if ((g_debugflags & 16) == 0 && sc->sc_provider_open > 0) {
|
|
if (sc->sc_mediasize > mediasize) {
|
|
gctl_error(req, "Device %s is busy.",
|
|
sc->sc_provider->name);
|
|
sx_xunlock(&sc->sc_lock);
|
|
return;
|
|
}
|
|
}
|
|
LIST_FOREACH(disk, &sc->sc_disks, d_next) {
|
|
if (mediasize > disk->d_consumer->provider->mediasize -
|
|
disk->d_consumer->provider->sectorsize) {
|
|
gctl_error(req, "Provider %s is too small.",
|
|
disk->d_name);
|
|
sx_xunlock(&sc->sc_lock);
|
|
return;
|
|
}
|
|
}
|
|
/* Update the size. */
|
|
sc->sc_mediasize = mediasize;
|
|
LIST_FOREACH(disk, &sc->sc_disks, d_next) {
|
|
g_mirror_update_metadata(disk);
|
|
}
|
|
g_topology_lock();
|
|
g_resize_provider(sc->sc_provider, mediasize);
|
|
g_topology_unlock();
|
|
sx_xunlock(&sc->sc_lock);
|
|
}
|
|
|
|
static void
|
|
g_mirror_ctl_deactivate(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
struct g_mirror_softc *sc;
|
|
struct g_mirror_disk *disk;
|
|
const char *name;
|
|
char param[16];
|
|
int *nargs;
|
|
u_int i, active;
|
|
|
|
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
|
|
if (nargs == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "nargs");
|
|
return;
|
|
}
|
|
if (*nargs < 2) {
|
|
gctl_error(req, "Too few arguments.");
|
|
return;
|
|
}
|
|
name = gctl_get_asciiparam(req, "arg0");
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", 0);
|
|
return;
|
|
}
|
|
sc = g_mirror_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "No such device: %s.", name);
|
|
return;
|
|
}
|
|
active = g_mirror_ndisks(sc, G_MIRROR_DISK_STATE_ACTIVE);
|
|
for (i = 1; i < (u_int)*nargs; i++) {
|
|
snprintf(param, sizeof(param), "arg%u", i);
|
|
name = gctl_get_asciiparam(req, param);
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", i);
|
|
continue;
|
|
}
|
|
disk = g_mirror_find_disk(sc, name);
|
|
if (disk == NULL) {
|
|
gctl_error(req, "No such provider: %s.", name);
|
|
continue;
|
|
}
|
|
if (disk->d_state == G_MIRROR_DISK_STATE_ACTIVE) {
|
|
if (active > 1)
|
|
active--;
|
|
else {
|
|
gctl_error(req, "%s: Can't deactivate the "
|
|
"last ACTIVE component %s.",
|
|
sc->sc_geom->name, name);
|
|
continue;
|
|
}
|
|
}
|
|
disk->d_flags |= G_MIRROR_DISK_FLAG_INACTIVE;
|
|
disk->d_flags &= ~G_MIRROR_DISK_FLAG_FORCE_SYNC;
|
|
g_mirror_update_metadata(disk);
|
|
sc->sc_bump_id |= G_MIRROR_BUMP_SYNCID;
|
|
g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DISCONNECTED,
|
|
G_MIRROR_EVENT_DONTWAIT);
|
|
}
|
|
sx_xunlock(&sc->sc_lock);
|
|
}
|
|
|
|
static void
|
|
g_mirror_ctl_forget(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
struct g_mirror_softc *sc;
|
|
struct g_mirror_disk *disk;
|
|
const char *name;
|
|
char param[16];
|
|
int *nargs;
|
|
u_int i;
|
|
|
|
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, "Missing device(s).");
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < (u_int)*nargs; i++) {
|
|
snprintf(param, sizeof(param), "arg%u", i);
|
|
name = gctl_get_asciiparam(req, param);
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", i);
|
|
return;
|
|
}
|
|
sc = g_mirror_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "No such device: %s.", name);
|
|
return;
|
|
}
|
|
if (g_mirror_ndisks(sc, -1) == sc->sc_ndisks) {
|
|
sx_xunlock(&sc->sc_lock);
|
|
G_MIRROR_DEBUG(1,
|
|
"All disks connected in %s, skipping.",
|
|
sc->sc_name);
|
|
continue;
|
|
}
|
|
sc->sc_ndisks = g_mirror_ndisks(sc, -1);
|
|
LIST_FOREACH(disk, &sc->sc_disks, d_next) {
|
|
g_mirror_update_metadata(disk);
|
|
}
|
|
sx_xunlock(&sc->sc_lock);
|
|
}
|
|
}
|
|
|
|
static void
|
|
g_mirror_ctl_stop(struct gctl_req *req, struct g_class *mp, int wipe)
|
|
{
|
|
struct g_mirror_softc *sc;
|
|
int *force, *nargs, error;
|
|
const char *name;
|
|
char param[16];
|
|
u_int i;
|
|
int 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, "Missing device(s).");
|
|
return;
|
|
}
|
|
force = gctl_get_paraml(req, "force", sizeof(*force));
|
|
if (force == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "force");
|
|
return;
|
|
}
|
|
if (*force)
|
|
how = G_MIRROR_DESTROY_HARD;
|
|
else
|
|
how = G_MIRROR_DESTROY_SOFT;
|
|
|
|
for (i = 0; i < (u_int)*nargs; i++) {
|
|
snprintf(param, sizeof(param), "arg%u", i);
|
|
name = gctl_get_asciiparam(req, param);
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", i);
|
|
return;
|
|
}
|
|
sc = g_mirror_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "No such device: %s.", name);
|
|
return;
|
|
}
|
|
g_cancel_event(sc);
|
|
if (wipe)
|
|
sc->sc_flags |= G_MIRROR_DEVICE_FLAG_WIPE;
|
|
error = g_mirror_destroy(sc, how);
|
|
if (error != 0) {
|
|
gctl_error(req, "Cannot destroy device %s (error=%d).",
|
|
sc->sc_geom->name, error);
|
|
if (wipe)
|
|
sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_WIPE;
|
|
sx_xunlock(&sc->sc_lock);
|
|
return;
|
|
}
|
|
/* No need to unlock, because lock is already dead. */
|
|
}
|
|
}
|
|
|
|
void
|
|
g_mirror_config(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_MIRROR_VERSION) {
|
|
gctl_error(req, "Userland and kernel parts are out of sync.");
|
|
return;
|
|
}
|
|
|
|
g_topology_unlock();
|
|
if (strcmp(verb, "configure") == 0)
|
|
g_mirror_ctl_configure(req, mp);
|
|
else if (strcmp(verb, "create") == 0)
|
|
g_mirror_ctl_create(req, mp);
|
|
else if (strcmp(verb, "rebuild") == 0)
|
|
g_mirror_ctl_rebuild(req, mp);
|
|
else if (strcmp(verb, "insert") == 0)
|
|
g_mirror_ctl_insert(req, mp);
|
|
else if (strcmp(verb, "remove") == 0)
|
|
g_mirror_ctl_remove(req, mp);
|
|
else if (strcmp(verb, "resize") == 0)
|
|
g_mirror_ctl_resize(req, mp);
|
|
else if (strcmp(verb, "deactivate") == 0)
|
|
g_mirror_ctl_deactivate(req, mp);
|
|
else if (strcmp(verb, "forget") == 0)
|
|
g_mirror_ctl_forget(req, mp);
|
|
else if (strcmp(verb, "stop") == 0)
|
|
g_mirror_ctl_stop(req, mp, 0);
|
|
else if (strcmp(verb, "destroy") == 0)
|
|
g_mirror_ctl_stop(req, mp, 1);
|
|
else
|
|
gctl_error(req, "Unknown verb.");
|
|
g_topology_lock();
|
|
}
|