b34fb80d83
gmirror and graid3 in a way that it is not resynchronized after a power failure or system crash. It is safe when gjournal is running on top of gmirror/graid3.
629 lines
16 KiB
C
629 lines
16 KiB
C
/*-
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* Copyright (c) 2004-2006 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/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/raid3/g_raid3.h>
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static struct g_raid3_softc *
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g_raid3_find_device(struct g_class *mp, const char *name)
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{
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struct g_raid3_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_RAID3_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_raid3_disk *
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g_raid3_find_disk(struct g_raid3_softc *sc, const char *name)
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{
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struct g_raid3_disk *disk;
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u_int n;
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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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for (n = 0; n < sc->sc_ndisks; n++) {
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disk = &sc->sc_disks[n];
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if (disk->d_state == G_RAID3_DISK_STATE_NODISK)
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continue;
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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_raid3_ctl_configure(struct gctl_req *req, struct g_class *mp)
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{
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struct g_raid3_softc *sc;
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struct g_raid3_disk *disk;
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const char *name;
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int *nargs, do_sync = 0, dirty = 1;
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int *autosync, *noautosync;
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int *failsync, *nofailsync;
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int *round_robin, *noround_robin;
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int *verify, *noverify;
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u_int n;
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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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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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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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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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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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round_robin = gctl_get_paraml(req, "round_robin", sizeof(*round_robin));
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if (round_robin == NULL) {
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gctl_error(req, "No '%s' argument.", "round_robin");
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return;
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}
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noround_robin = gctl_get_paraml(req, "noround_robin",
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sizeof(*noround_robin));
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if (noround_robin == NULL) {
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gctl_error(req, "No '%s' argument.", "noround_robin");
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return;
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}
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if (*round_robin && *noround_robin) {
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gctl_error(req, "'%s' and '%s' specified.", "round_robin",
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"noround_robin");
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return;
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}
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verify = gctl_get_paraml(req, "verify", sizeof(*verify));
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if (verify == NULL) {
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gctl_error(req, "No '%s' argument.", "verify");
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return;
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}
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noverify = gctl_get_paraml(req, "noverify", sizeof(*noverify));
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if (noverify == NULL) {
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gctl_error(req, "No '%s' argument.", "noverify");
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return;
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}
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if (*verify && *noverify) {
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gctl_error(req, "'%s' and '%s' specified.", "verify",
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"noverify");
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return;
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}
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if (!*autosync && !*noautosync && !*failsync && !*nofailsync &&
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!*round_robin && !*noround_robin && !*verify && !*noverify) {
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gctl_error(req, "Nothing has changed.");
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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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sc = g_raid3_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 (g_raid3_ndisks(sc, -1) < sc->sc_ndisks) {
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gctl_error(req, "Not all disks connected.");
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sx_xunlock(&sc->sc_lock);
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return;
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}
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if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) != 0) {
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if (*autosync) {
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sc->sc_flags &= ~G_RAID3_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_RAID3_DEVICE_FLAG_NOAUTOSYNC;
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}
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if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOFAILSYNC) != 0) {
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if (*failsync)
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sc->sc_flags &= ~G_RAID3_DEVICE_FLAG_NOFAILSYNC;
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} else {
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if (*nofailsync) {
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sc->sc_flags |= G_RAID3_DEVICE_FLAG_NOFAILSYNC;
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dirty = 0;
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}
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}
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if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_VERIFY) != 0) {
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if (*noverify)
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sc->sc_flags &= ~G_RAID3_DEVICE_FLAG_VERIFY;
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} else {
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if (*verify)
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sc->sc_flags |= G_RAID3_DEVICE_FLAG_VERIFY;
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}
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if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0) {
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if (*noround_robin)
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sc->sc_flags &= ~G_RAID3_DEVICE_FLAG_ROUND_ROBIN;
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} else {
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if (*round_robin)
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sc->sc_flags |= G_RAID3_DEVICE_FLAG_ROUND_ROBIN;
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}
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if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_VERIFY) != 0 &&
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(sc->sc_flags & G_RAID3_DEVICE_FLAG_ROUND_ROBIN) != 0) {
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/*
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* VERIFY and ROUND-ROBIN options are mutally exclusive.
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*/
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sc->sc_flags &= ~G_RAID3_DEVICE_FLAG_ROUND_ROBIN;
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}
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for (n = 0; n < sc->sc_ndisks; n++) {
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disk = &sc->sc_disks[n];
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if (do_sync) {
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if (disk->d_state == G_RAID3_DISK_STATE_SYNCHRONIZING)
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disk->d_flags &= ~G_RAID3_DISK_FLAG_FORCE_SYNC;
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}
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if (!dirty)
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disk->d_flags &= ~G_RAID3_DISK_FLAG_DIRTY;
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g_raid3_update_metadata(disk);
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if (do_sync) {
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if (disk->d_state == G_RAID3_DISK_STATE_STALE) {
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/*
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* XXX: This is probably possible that this
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* component will not be retasted.
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*/
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g_raid3_event_send(disk,
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G_RAID3_DISK_STATE_DISCONNECTED,
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G_RAID3_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_raid3_ctl_rebuild(struct gctl_req *req, struct g_class *mp)
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{
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struct g_raid3_metadata md;
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struct g_raid3_softc *sc;
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struct g_raid3_disk *disk;
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struct g_provider *pp;
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const char *name;
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int error, *nargs;
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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, "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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sc = g_raid3_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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name = gctl_get_asciiparam(req, "arg1");
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if (name == NULL) {
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gctl_error(req, "No 'arg%u' argument.", 1);
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sx_xunlock(&sc->sc_lock);
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return;
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}
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disk = g_raid3_find_disk(sc, name);
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if (disk == NULL) {
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gctl_error(req, "No such provider: %s.", name);
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sx_xunlock(&sc->sc_lock);
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return;
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}
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if (disk->d_state == G_RAID3_DISK_STATE_ACTIVE &&
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g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) < sc->sc_ndisks) {
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gctl_error(req, "There is one stale disk already.");
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sx_xunlock(&sc->sc_lock);
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return;
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}
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/*
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* Do rebuild by resetting syncid and disconnecting disk.
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* It'll be retasted, connected to the device and synchronized.
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*/
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disk->d_sync.ds_syncid = 0;
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if ((sc->sc_flags & G_RAID3_DEVICE_FLAG_NOAUTOSYNC) != 0)
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disk->d_flags |= G_RAID3_DISK_FLAG_FORCE_SYNC;
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g_raid3_update_metadata(disk);
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pp = disk->d_consumer->provider;
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g_topology_lock();
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error = g_raid3_read_metadata(disk->d_consumer, &md);
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g_topology_unlock();
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g_raid3_event_send(disk, G_RAID3_DISK_STATE_DISCONNECTED,
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G_RAID3_EVENT_WAIT);
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if (error != 0) {
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gctl_error(req, "Cannot read metadata from %s.", pp->name);
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sx_xunlock(&sc->sc_lock);
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return;
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}
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error = g_raid3_add_disk(sc, pp, &md);
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if (error != 0)
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gctl_error(req, "Cannot reconnect component %s.", pp->name);
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sx_xunlock(&sc->sc_lock);
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}
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static void
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g_raid3_ctl_stop(struct gctl_req *req, struct g_class *mp)
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{
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struct g_raid3_softc *sc;
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int *force, *nargs, error;
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const char *name;
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char param[16];
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u_int i;
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int 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, "Missing device(s).");
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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) {
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gctl_error(req, "No '%s' argument.", "force");
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return;
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}
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if (*force)
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how = G_RAID3_DESTROY_HARD;
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else
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how = G_RAID3_DESTROY_SOFT;
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for (i = 0; i < (u_int)*nargs; i++) {
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snprintf(param, sizeof(param), "arg%u", i);
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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.", i);
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return;
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}
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sc = g_raid3_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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g_cancel_event(sc);
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error = g_raid3_destroy(sc, how);
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if (error != 0) {
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gctl_error(req, "Cannot destroy device %s (error=%d).",
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sc->sc_geom->name, error);
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sx_xunlock(&sc->sc_lock);
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return;
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}
|
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/* No need to unlock, because lock is already dead. */
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}
|
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}
|
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|
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static void
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g_raid3_ctl_insert_orphan(struct g_consumer *cp)
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{
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|
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KASSERT(1 == 0, ("%s called while inserting %s.", __func__,
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cp->provider->name));
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}
|
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|
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static void
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g_raid3_ctl_insert(struct gctl_req *req, struct g_class *mp)
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{
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struct g_raid3_metadata md;
|
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struct g_raid3_softc *sc;
|
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struct g_raid3_disk *disk;
|
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struct g_geom *gp;
|
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struct g_provider *pp;
|
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struct g_consumer *cp;
|
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const char *name;
|
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u_char *sector;
|
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off_t compsize;
|
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intmax_t *no;
|
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int *hardcode, *nargs, error;
|
|
|
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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");
|
|
return;
|
|
}
|
|
if (*nargs != 2) {
|
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gctl_error(req, "Invalid number of arguments.");
|
|
return;
|
|
}
|
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hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode));
|
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if (hardcode == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "hardcode");
|
|
return;
|
|
}
|
|
name = gctl_get_asciiparam(req, "arg1");
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", 1);
|
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return;
|
|
}
|
|
no = gctl_get_paraml(req, "number", sizeof(*no));
|
|
if (no == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "no");
|
|
return;
|
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}
|
|
if (strncmp(name, "/dev/", 5) == 0)
|
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name += 5;
|
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g_topology_lock();
|
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pp = g_provider_by_name(name);
|
|
if (pp == NULL) {
|
|
g_topology_unlock();
|
|
gctl_error(req, "Invalid provider.");
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return;
|
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}
|
|
gp = g_new_geomf(mp, "raid3:insert");
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gp->orphan = g_raid3_ctl_insert_orphan;
|
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cp = g_new_consumer(gp);
|
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error = g_attach(cp, pp);
|
|
if (error != 0) {
|
|
g_topology_unlock();
|
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gctl_error(req, "Cannot attach to %s.", pp->name);
|
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goto end;
|
|
}
|
|
error = g_access(cp, 0, 1, 1);
|
|
if (error != 0) {
|
|
g_topology_unlock();
|
|
gctl_error(req, "Cannot access %s.", pp->name);
|
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goto end;
|
|
}
|
|
g_topology_unlock();
|
|
name = gctl_get_asciiparam(req, "arg0");
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", 0);
|
|
goto end;
|
|
}
|
|
sc = g_raid3_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "No such device: %s.", name);
|
|
goto end;
|
|
}
|
|
if (*no >= sc->sc_ndisks) {
|
|
sx_xunlock(&sc->sc_lock);
|
|
gctl_error(req, "Invalid component number.");
|
|
goto end;
|
|
}
|
|
disk = &sc->sc_disks[*no];
|
|
if (disk->d_state != G_RAID3_DISK_STATE_NODISK) {
|
|
sx_xunlock(&sc->sc_lock);
|
|
gctl_error(req, "Component %jd is already connected.", *no);
|
|
goto end;
|
|
}
|
|
if (((sc->sc_sectorsize / (sc->sc_ndisks - 1)) % pp->sectorsize) != 0) {
|
|
sx_xunlock(&sc->sc_lock);
|
|
gctl_error(req,
|
|
"Cannot insert provider %s, because of its sector size.",
|
|
pp->name);
|
|
goto end;
|
|
}
|
|
compsize = sc->sc_mediasize / (sc->sc_ndisks - 1);
|
|
if (compsize > pp->mediasize - pp->sectorsize) {
|
|
sx_xunlock(&sc->sc_lock);
|
|
gctl_error(req, "Provider %s too small.", pp->name);
|
|
goto end;
|
|
}
|
|
if (compsize < pp->mediasize - pp->sectorsize) {
|
|
gctl_error(req,
|
|
"warning: %s: only %jd bytes from %jd bytes used.",
|
|
pp->name, (intmax_t)compsize,
|
|
(intmax_t)(pp->mediasize - pp->sectorsize));
|
|
}
|
|
g_raid3_fill_metadata(disk, &md);
|
|
sx_xunlock(&sc->sc_lock);
|
|
md.md_syncid = 0;
|
|
md.md_dflags = 0;
|
|
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);
|
|
raid3_metadata_encode(&md, sector);
|
|
error = g_write_data(cp, pp->mediasize - pp->sectorsize, sector,
|
|
pp->sectorsize);
|
|
g_free(sector);
|
|
if (error != 0)
|
|
gctl_error(req, "Cannot store metadata on %s.", pp->name);
|
|
end:
|
|
g_topology_lock();
|
|
if (cp->acw > 0)
|
|
g_access(cp, 0, -1, -1);
|
|
if (cp->provider != NULL)
|
|
g_detach(cp);
|
|
g_destroy_consumer(cp);
|
|
g_destroy_geom(gp);
|
|
g_topology_unlock();
|
|
}
|
|
|
|
static void
|
|
g_raid3_ctl_remove(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
struct g_raid3_softc *sc;
|
|
struct g_raid3_disk *disk;
|
|
const char *name;
|
|
intmax_t *no;
|
|
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, "Invalid number of arguments.");
|
|
return;
|
|
}
|
|
no = gctl_get_paraml(req, "number", sizeof(*no));
|
|
if (no == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "no");
|
|
return;
|
|
}
|
|
name = gctl_get_asciiparam(req, "arg0");
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", 0);
|
|
return;
|
|
}
|
|
sc = g_raid3_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "No such device: %s.", name);
|
|
return;
|
|
}
|
|
if (*no >= sc->sc_ndisks) {
|
|
sx_xunlock(&sc->sc_lock);
|
|
gctl_error(req, "Invalid component number.");
|
|
return;
|
|
}
|
|
disk = &sc->sc_disks[*no];
|
|
switch (disk->d_state) {
|
|
case G_RAID3_DISK_STATE_ACTIVE:
|
|
/*
|
|
* When replacing ACTIVE component, all the rest has to be also
|
|
* ACTIVE.
|
|
*/
|
|
if (g_raid3_ndisks(sc, G_RAID3_DISK_STATE_ACTIVE) <
|
|
sc->sc_ndisks) {
|
|
gctl_error(req, "Cannot replace component number %jd.",
|
|
*no);
|
|
break;
|
|
}
|
|
/* FALLTHROUGH */
|
|
case G_RAID3_DISK_STATE_STALE:
|
|
case G_RAID3_DISK_STATE_SYNCHRONIZING:
|
|
if (g_raid3_clear_metadata(disk) != 0) {
|
|
gctl_error(req, "Cannot clear metadata on %s.",
|
|
g_raid3_get_diskname(disk));
|
|
} else {
|
|
g_raid3_event_send(disk,
|
|
G_RAID3_DISK_STATE_DISCONNECTED,
|
|
G_RAID3_EVENT_DONTWAIT);
|
|
}
|
|
break;
|
|
case G_RAID3_DISK_STATE_NODISK:
|
|
break;
|
|
default:
|
|
gctl_error(req, "Cannot replace component number %jd.", *no);
|
|
break;
|
|
}
|
|
sx_xunlock(&sc->sc_lock);
|
|
}
|
|
|
|
void
|
|
g_raid3_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_RAID3_VERSION) {
|
|
gctl_error(req, "Userland and kernel parts are out of sync.");
|
|
return;
|
|
}
|
|
|
|
g_topology_unlock();
|
|
if (strcmp(verb, "configure") == 0)
|
|
g_raid3_ctl_configure(req, mp);
|
|
else if (strcmp(verb, "insert") == 0)
|
|
g_raid3_ctl_insert(req, mp);
|
|
else if (strcmp(verb, "rebuild") == 0)
|
|
g_raid3_ctl_rebuild(req, mp);
|
|
else if (strcmp(verb, "remove") == 0)
|
|
g_raid3_ctl_remove(req, mp);
|
|
else if (strcmp(verb, "stop") == 0)
|
|
g_raid3_ctl_stop(req, mp);
|
|
else
|
|
gctl_error(req, "Unknown verb.");
|
|
g_topology_lock();
|
|
}
|