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/*-
* Copyright (c) 2005 Chris Jones
* All rights reserved.
*
* This software was developed for the FreeBSD Project by Chris Jones
* thanks to the support of Google's Summer of Code program and
* mentoring by Lukas Ertl.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/libkern.h>
#include <sys/malloc.h>
#include <geom/geom.h>
#include <geom/vinum/geom_vinum_var.h>
#include <geom/vinum/geom_vinum.h>
void
gv_move(struct g_geom *gp, struct gctl_req *req)
{
struct gv_softc *sc;
struct gv_sd *s;
struct gv_drive *d;
char buf[20], *destination, *object;
int *argc, *flags, i, type;
sc = gp->softc;
argc = gctl_get_paraml(req, "argc", sizeof(*argc));
if (argc == NULL) {
gctl_error(req, "no arguments given");
return;
}
flags = gctl_get_paraml(req, "flags", sizeof(*flags));
if (flags == NULL) {
gctl_error(req, "no flags given");
return;
}
destination = gctl_get_param(req, "destination", NULL);
if (destination == NULL) {
gctl_error(req, "no destination given");
return;
}
if (gv_object_type(sc, destination) != GV_TYPE_DRIVE) {
gctl_error(req, "destination '%s' is not a drive", destination);
return;
}
d = gv_find_drive(sc, destination);
/*
* We start with 1 here, because argv[0] on the command line is the
* destination drive.
*/
for (i = 1; i < *argc; i++) {
snprintf(buf, sizeof(buf), "argv%d", i);
object = gctl_get_param(req, buf, NULL);
if (object == NULL)
continue;
type = gv_object_type(sc, object);
if (type != GV_TYPE_SD) {
gctl_error(req, "you can only move subdisks; "
"'%s' is not a subdisk", object);
return;
}
s = gv_find_sd(sc, object);
if (s == NULL) {
gctl_error(req, "unknown subdisk '%s'", object);
return;
}
gv_post_event(sc, GV_EVENT_MOVE_SD, s, d, *flags, 0);
}
}
/* Move a subdisk. */
int
gv_move_sd(struct gv_softc *sc, struct gv_sd *cursd,
struct gv_drive *destination, int flags)
{
struct gv_drive *d;
struct gv_sd *newsd, *s, *s2;
struct gv_plex *p;
int err;
g_topology_assert();
KASSERT(cursd != NULL, ("gv_move_sd: NULL cursd"));
KASSERT(destination != NULL, ("gv_move_sd: NULL destination"));
d = cursd->drive_sc;
if ((gv_consumer_is_open(d->consumer) ||
gv_consumer_is_open(destination->consumer)) &&
!(flags & GV_FLAG_F)) {
G_VINUM_DEBUG(0, "consumers on current and destination drive "
" still open");
return (GV_ERR_ISBUSY);
}
if (!(flags & GV_FLAG_F)) {
G_VINUM_DEBUG(1, "-f flag not passed; move would be "
"destructive");
return (GV_ERR_INVFLAG);
}
if (destination == cursd->drive_sc) {
G_VINUM_DEBUG(1, "subdisk '%s' already on drive '%s'",
cursd->name, destination->name);
return (GV_ERR_ISATTACHED);
}
/* XXX: Does it have to be part of a plex? */
p = gv_find_plex(sc, cursd->plex);
if (p == NULL) {
G_VINUM_DEBUG(0, "subdisk '%s' is not part of a plex",
cursd->name);
return (GV_ERR_NOTFOUND);
}
/* Stale the old subdisk. */
err = gv_set_sd_state(cursd, GV_SD_STALE,
GV_SETSTATE_FORCE | GV_SETSTATE_CONFIG);
if (err) {
G_VINUM_DEBUG(0, "unable to set the subdisk '%s' to state "
"'stale'", cursd->name);
return (err);
}
/*
* Create new subdisk. Ideally, we'd use gv_new_sd, but that requires
* us to create a string for it to parse, which is silly.
* TODO: maybe refactor gv_new_sd such that this is no longer the case.
*/
newsd = g_malloc(sizeof(struct gv_sd), M_WAITOK | M_ZERO);
newsd->plex_offset = cursd->plex_offset;
newsd->size = cursd->size;
newsd->drive_offset = -1;
strlcpy(newsd->name, cursd->name, sizeof(newsd->name));
strlcpy(newsd->drive, destination->name, sizeof(newsd->drive));
strlcpy(newsd->plex, cursd->plex, sizeof(newsd->plex));
newsd->state = GV_SD_STALE;
newsd->vinumconf = cursd->vinumconf;
err = gv_sd_to_drive(newsd, destination);
if (err) {
/* XXX not enough free space? */
g_free(newsd);
return (err);
}
/* Replace the old sd by the new one. */
LIST_FOREACH_SAFE(s, &p->subdisks, in_plex, s2) {
if (s == cursd) {
gv_rm_sd(sc, s);
}
}
gv_sd_to_plex(newsd, p);
LIST_INSERT_HEAD(&sc->subdisks, newsd, sd);
/* Update volume size of plex. */
if (p->vol_sc != NULL)
gv_update_vol_size(p->vol_sc, gv_vol_size(p->vol_sc));
gv_save_config(p->vinumconf);
return (0);
}
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