57335408d4
Add functions to rename objects and to move a subdisk from one drive to another. Obtained from: Chris Jones <chris.jones@ualberta.ca> Sponsored by: Google Summer of Code 2005 MFC in: 1 week
214 lines
5.8 KiB
C
214 lines
5.8 KiB
C
/*-
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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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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/libkern.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <geom/geom.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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#include <geom/vinum/geom_vinum_share.h>
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static int gv_move_sd(struct gv_softc *, struct gctl_req *,
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struct gv_sd *, char *, int);
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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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char buf[20], *destination, *object;
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int *argc, err, *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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flags = gctl_get_paraml(req, "flags", sizeof(*flags));
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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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/*
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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' isn't one", 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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err = gv_move_sd(sc, req, s, destination, *flags);
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if (err)
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return;
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}
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gv_save_config_all(sc);
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}
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/* Move a subdisk. */
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static int
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gv_move_sd(struct gv_softc *sc, struct gctl_req *req, struct gv_sd *cursd, char *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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struct g_consumer *cp;
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char errstr[ERRBUFSIZ];
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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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cp = cursd->consumer;
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if (cp->acr || cp->acw || cp->ace) {
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gctl_error(req, "subdisk '%s' is busy", cursd->name);
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return (-1);
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}
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if (!(flags && GV_FLAG_F)) {
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gctl_error(req, "-f flag not passed; move would be "
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"destructive");
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return (-1);
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}
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d = gv_find_drive(sc, destination);
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if (d == NULL) {
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gctl_error(req, "destination drive '%s' not found",
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destination);
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return (-1);
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}
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if (d == cursd->drive_sc) {
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gctl_error(req, "subdisk '%s' already on drive '%s'",
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cursd->name, destination);
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return (-1);
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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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gctl_error(req, "subdisk '%s' is not part of a plex",
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cursd->name);
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return (-1);
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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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gctl_error(req, "could not 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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strncpy(newsd->name, cursd->name, GV_MAXSDNAME);
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strncpy(newsd->drive, destination, GV_MAXDRIVENAME);
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strncpy(newsd->plex, cursd->plex, GV_MAXPLEXNAME);
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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(sc, d, newsd, errstr, ERRBUFSIZ);
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if (err) {
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/* XXX not enough free space? */
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gctl_error(req, errstr);
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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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g_detach(cp);
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LIST_FOREACH_SAFE(s, &p->subdisks, in_plex, s2) {
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if (s == cursd) {
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p->sdcount--;
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p->size -= s->size;
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err = gv_rm_sd(sc, req, s, 0);
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if (err)
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return (err);
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}
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}
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gv_sd_to_plex(p, newsd, 1);
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/* Creates the new providers.... */
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gv_drive_modify(d);
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/* And reconnect the consumer ... */
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newsd->consumer = cp;
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err = g_attach(cp, newsd->provider);
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if (err) {
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g_destroy_consumer(cp);
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gctl_error(req, "proposed move would create a loop in GEOM "
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"config");
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return (err);
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}
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LIST_INSERT_HEAD(&sc->subdisks, newsd, sd);
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gv_save_config_all(sc);
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return (0);
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}
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