1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2005 Chris Jones
5 * All rights reserved.
6 *
7 * This software was developed for the FreeBSD Project by Chris Jones
8 * thanks to the support of Google's Summer of Code program and
9 * mentoring by Lukas Ertl.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 */
33
34 #include <sys/cdefs.h>
35 #include <sys/libkern.h>
36 #include <sys/malloc.h>
37
38 #include <geom/geom.h>
39 #include <geom/geom_dbg.h>
40 #include <geom/vinum/geom_vinum_var.h>
41 #include <geom/vinum/geom_vinum.h>
42
43 void
gv_move(struct g_geom * gp,struct gctl_req * req)44 gv_move(struct g_geom *gp, struct gctl_req *req)
45 {
46 struct gv_softc *sc;
47 struct gv_sd *s;
48 struct gv_drive *d;
49 char buf[20], *destination, *object;
50 int *argc, *flags, i, type;
51
52 sc = gp->softc;
53
54 argc = gctl_get_paraml(req, "argc", sizeof(*argc));
55 if (argc == NULL) {
56 gctl_error(req, "no arguments given");
57 return;
58 }
59 flags = gctl_get_paraml(req, "flags", sizeof(*flags));
60 if (flags == NULL) {
61 gctl_error(req, "no flags given");
62 return;
63 }
64 destination = gctl_get_param(req, "destination", NULL);
65 if (destination == NULL) {
66 gctl_error(req, "no destination given");
67 return;
68 }
69 if (gv_object_type(sc, destination) != GV_TYPE_DRIVE) {
70 gctl_error(req, "destination '%s' is not a drive", destination);
71 return;
72 }
73 d = gv_find_drive(sc, destination);
74
75 /*
76 * We start with 1 here, because argv[0] on the command line is the
77 * destination drive.
78 */
79 for (i = 1; i < *argc; i++) {
80 snprintf(buf, sizeof(buf), "argv%d", i);
81 object = gctl_get_param(req, buf, NULL);
82 if (object == NULL)
83 continue;
84
85 type = gv_object_type(sc, object);
86 if (type != GV_TYPE_SD) {
87 gctl_error(req, "you can only move subdisks; "
88 "'%s' is not a subdisk", object);
89 return;
90 }
91
92 s = gv_find_sd(sc, object);
93 if (s == NULL) {
94 gctl_error(req, "unknown subdisk '%s'", object);
95 return;
96 }
97 gv_post_event(sc, GV_EVENT_MOVE_SD, s, d, *flags, 0);
98 }
99 }
100
101 /* Move a subdisk. */
102 int
gv_move_sd(struct gv_softc * sc,struct gv_sd * cursd,struct gv_drive * destination,int flags)103 gv_move_sd(struct gv_softc *sc, struct gv_sd *cursd,
104 struct gv_drive *destination, int flags)
105 {
106 struct gv_drive *d;
107 struct gv_sd *newsd, *s, *s2;
108 struct gv_plex *p;
109 int err;
110
111 g_topology_assert();
112 KASSERT(cursd != NULL, ("gv_move_sd: NULL cursd"));
113 KASSERT(destination != NULL, ("gv_move_sd: NULL destination"));
114
115 d = cursd->drive_sc;
116
117 if ((gv_consumer_is_open(d->consumer) ||
118 gv_consumer_is_open(destination->consumer)) &&
119 !(flags & GV_FLAG_F)) {
120 G_VINUM_DEBUG(0, "consumers on current and destination drive "
121 " still open");
122 return (GV_ERR_ISBUSY);
123 }
124
125 if (!(flags & GV_FLAG_F)) {
126 G_VINUM_DEBUG(1, "-f flag not passed; move would be "
127 "destructive");
128 return (GV_ERR_INVFLAG);
129 }
130
131 if (destination == cursd->drive_sc) {
132 G_VINUM_DEBUG(1, "subdisk '%s' already on drive '%s'",
133 cursd->name, destination->name);
134 return (GV_ERR_ISATTACHED);
135 }
136
137 /* XXX: Does it have to be part of a plex? */
138 p = gv_find_plex(sc, cursd->plex);
139 if (p == NULL) {
140 G_VINUM_DEBUG(0, "subdisk '%s' is not part of a plex",
141 cursd->name);
142 return (GV_ERR_NOTFOUND);
143 }
144
145 /* Stale the old subdisk. */
146 err = gv_set_sd_state(cursd, GV_SD_STALE,
147 GV_SETSTATE_FORCE | GV_SETSTATE_CONFIG);
148 if (err) {
149 G_VINUM_DEBUG(0, "unable to set the subdisk '%s' to state "
150 "'stale'", cursd->name);
151 return (err);
152 }
153
154 /*
155 * Create new subdisk. Ideally, we'd use gv_new_sd, but that requires
156 * us to create a string for it to parse, which is silly.
157 * TODO: maybe refactor gv_new_sd such that this is no longer the case.
158 */
159 newsd = g_malloc(sizeof(struct gv_sd), M_WAITOK | M_ZERO);
160 newsd->plex_offset = cursd->plex_offset;
161 newsd->size = cursd->size;
162 newsd->drive_offset = -1;
163 strlcpy(newsd->name, cursd->name, sizeof(newsd->name));
164 strlcpy(newsd->drive, destination->name, sizeof(newsd->drive));
165 strlcpy(newsd->plex, cursd->plex, sizeof(newsd->plex));
166 newsd->state = GV_SD_STALE;
167 newsd->vinumconf = cursd->vinumconf;
168
169 err = gv_sd_to_drive(newsd, destination);
170 if (err) {
171 /* XXX not enough free space? */
172 g_free(newsd);
173 return (err);
174 }
175
176 /* Replace the old sd by the new one. */
177 LIST_FOREACH_SAFE(s, &p->subdisks, in_plex, s2) {
178 if (s == cursd) {
179 gv_rm_sd(sc, s);
180 }
181 }
182 gv_sd_to_plex(newsd, p);
183 LIST_INSERT_HEAD(&sc->subdisks, newsd, sd);
184 /* Update volume size of plex. */
185 if (p->vol_sc != NULL)
186 gv_update_vol_size(p->vol_sc, gv_vol_size(p->vol_sc));
187 gv_save_config(p->vinumconf);
188 return (0);
189 }
190