190 lines
5.5 KiB
C
190 lines
5.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2005 Chris Jones
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Chris Jones
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* thanks to the support of Google's Summer of Code program and
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* mentoring by Lukas Ertl.
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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 AUTHOR 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 AUTHOR 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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*/
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#include <sys/cdefs.h>
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#include <sys/libkern.h>
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#include <sys/malloc.h>
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#include <geom/geom.h>
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#include <geom/geom_dbg.h>
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#include <geom/vinum/geom_vinum_var.h>
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#include <geom/vinum/geom_vinum.h>
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void
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gv_move(struct g_geom *gp, struct gctl_req *req)
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{
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struct gv_softc *sc;
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struct gv_sd *s;
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struct gv_drive *d;
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char buf[20], *destination, *object;
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int *argc, *flags, i, type;
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sc = gp->softc;
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argc = gctl_get_paraml(req, "argc", sizeof(*argc));
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if (argc == NULL) {
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gctl_error(req, "no arguments given");
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return;
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}
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flags = gctl_get_paraml(req, "flags", sizeof(*flags));
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if (flags == NULL) {
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gctl_error(req, "no flags given");
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return;
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}
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destination = gctl_get_param(req, "destination", NULL);
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if (destination == NULL) {
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gctl_error(req, "no destination given");
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return;
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}
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if (gv_object_type(sc, destination) != GV_TYPE_DRIVE) {
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gctl_error(req, "destination '%s' is not a drive", destination);
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return;
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}
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d = gv_find_drive(sc, destination);
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/*
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* We start with 1 here, because argv[0] on the command line is the
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* destination drive.
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*/
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for (i = 1; i < *argc; i++) {
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snprintf(buf, sizeof(buf), "argv%d", i);
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object = gctl_get_param(req, buf, NULL);
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if (object == NULL)
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continue;
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type = gv_object_type(sc, object);
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if (type != GV_TYPE_SD) {
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gctl_error(req, "you can only move subdisks; "
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"'%s' is not a subdisk", object);
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return;
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}
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s = gv_find_sd(sc, object);
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if (s == NULL) {
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gctl_error(req, "unknown subdisk '%s'", object);
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return;
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}
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gv_post_event(sc, GV_EVENT_MOVE_SD, s, d, *flags, 0);
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}
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}
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/* Move a subdisk. */
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int
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gv_move_sd(struct gv_softc *sc, struct gv_sd *cursd,
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struct gv_drive *destination, int flags)
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{
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struct gv_drive *d;
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struct gv_sd *newsd, *s, *s2;
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struct gv_plex *p;
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int err;
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g_topology_assert();
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KASSERT(cursd != NULL, ("gv_move_sd: NULL cursd"));
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KASSERT(destination != NULL, ("gv_move_sd: NULL destination"));
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d = cursd->drive_sc;
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if ((gv_consumer_is_open(d->consumer) ||
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gv_consumer_is_open(destination->consumer)) &&
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!(flags & GV_FLAG_F)) {
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G_VINUM_DEBUG(0, "consumers on current and destination drive "
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" still open");
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return (GV_ERR_ISBUSY);
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}
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if (!(flags & GV_FLAG_F)) {
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G_VINUM_DEBUG(1, "-f flag not passed; move would be "
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"destructive");
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return (GV_ERR_INVFLAG);
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}
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if (destination == cursd->drive_sc) {
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G_VINUM_DEBUG(1, "subdisk '%s' already on drive '%s'",
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cursd->name, destination->name);
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return (GV_ERR_ISATTACHED);
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}
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/* XXX: Does it have to be part of a plex? */
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p = gv_find_plex(sc, cursd->plex);
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if (p == NULL) {
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G_VINUM_DEBUG(0, "subdisk '%s' is not part of a plex",
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cursd->name);
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return (GV_ERR_NOTFOUND);
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}
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/* Stale the old subdisk. */
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err = gv_set_sd_state(cursd, GV_SD_STALE,
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GV_SETSTATE_FORCE | GV_SETSTATE_CONFIG);
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if (err) {
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G_VINUM_DEBUG(0, "unable to set the subdisk '%s' to state "
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"'stale'", cursd->name);
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return (err);
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}
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/*
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* Create new subdisk. Ideally, we'd use gv_new_sd, but that requires
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* us to create a string for it to parse, which is silly.
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* TODO: maybe refactor gv_new_sd such that this is no longer the case.
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*/
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newsd = g_malloc(sizeof(struct gv_sd), M_WAITOK | M_ZERO);
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newsd->plex_offset = cursd->plex_offset;
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newsd->size = cursd->size;
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newsd->drive_offset = -1;
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strlcpy(newsd->name, cursd->name, sizeof(newsd->name));
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strlcpy(newsd->drive, destination->name, sizeof(newsd->drive));
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strlcpy(newsd->plex, cursd->plex, sizeof(newsd->plex));
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newsd->state = GV_SD_STALE;
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newsd->vinumconf = cursd->vinumconf;
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err = gv_sd_to_drive(newsd, destination);
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if (err) {
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/* XXX not enough free space? */
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g_free(newsd);
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return (err);
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}
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/* Replace the old sd by the new one. */
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LIST_FOREACH_SAFE(s, &p->subdisks, in_plex, s2) {
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if (s == cursd) {
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gv_rm_sd(sc, s);
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}
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}
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gv_sd_to_plex(newsd, p);
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LIST_INSERT_HEAD(&sc->subdisks, newsd, sd);
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/* Update volume size of plex. */
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if (p->vol_sc != NULL)
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gv_update_vol_size(p->vol_sc, gv_vol_size(p->vol_sc));
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gv_save_config(p->vinumconf);
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return (0);
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}
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