1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2016 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "tools.h"
static int _lvresize_params(struct cmd_context *cmd, int argc, char **argv,
struct lvresize_params *lp)
{
const char *cmd_name = command_name(cmd);
const char *type_str = arg_str_value(cmd, type_ARG, NULL);
int only_linear = 0;
if (type_str) {
if (!strcmp(type_str, "linear")) {
type_str = "striped";
only_linear = 1; /* User requested linear only target */
}
if (!(lp->segtype = get_segtype_from_string(cmd, type_str)))
return_0;
}
if (!strcmp(cmd_name, "lvreduce"))
lp->resize = LV_REDUCE;
else if (!strcmp(cmd_name, "lvextend"))
lp->resize = LV_EXTEND;
else
lp->resize = LV_ANY;
lp->sign = lp->poolmetadata_sign = SIGN_NONE;
if ((lp->use_policies = arg_is_set(cmd, usepolicies_ARG))) {
/* do nothing; lv_resize will handle --use-policies itself */
if (arg_from_list_is_set(cmd, NULL,
chunksize_ARG, extents_ARG,
poolmetadatasize_ARG,
regionsize_ARG,
size_ARG,
stripes_ARG, stripesize_ARG,
-1))
log_print_unless_silent("Ignoring size parameters with --use-policies.");
} else {
/*
* Allow omission of extents and size if the user has given us
* one or more PVs. Most likely, the intent was "resize this
* LV the best you can with these PVs"
* If only --poolmetadatasize is specified with list of PVs,
* then metadata will be extended there.
*/
if ((lp->extents = arg_uint_value(cmd, extents_ARG, 0))) {
lp->sign = arg_sign_value(cmd, extents_ARG, SIGN_NONE);
lp->percent = arg_percent_value(cmd, extents_ARG, PERCENT_NONE);
}
if (arg_from_list_is_zero(cmd, "may not be zero",
chunksize_ARG, extents_ARG,
poolmetadatasize_ARG,
regionsize_ARG,
size_ARG,
stripes_ARG, stripesize_ARG,
virtualsize_ARG,
-1))
return_0;
if ((lp->poolmetadata_size = arg_uint64_value(cmd, poolmetadatasize_ARG, 0))) {
lp->poolmetadata_sign = arg_sign_value(cmd, poolmetadatasize_ARG, SIGN_NONE);
if (lp->poolmetadata_sign == SIGN_MINUS) {
log_error("Can't reduce pool metadata size.");
return 0;
}
}
if ((lp->size = arg_uint64_value(cmd, size_ARG, 0))) {
lp->sign = arg_sign_value(cmd, size_ARG, SIGN_NONE);
lp->percent = PERCENT_NONE;
}
if (lp->size && lp->extents) {
log_error("Please specify either size or extents but not both.");
return 0;
}
if (!lp->extents &&
!lp->size &&
!lp->poolmetadata_size &&
(argc >= 2)) {
lp->extents = 100;
lp->percent = PERCENT_PVS;
lp->sign = SIGN_PLUS;
}
}
if (lp->resize == LV_EXTEND && lp->sign == SIGN_MINUS) {
log_error("Negative argument not permitted - use lvreduce.");
return 0;
}
if (lp->resize == LV_REDUCE &&
((lp->sign == SIGN_PLUS) ||
(lp->poolmetadata_sign == SIGN_PLUS))) {
log_error("Positive sign not permitted - use lvextend.");
return 0;
}
if (!argc) {
log_error("Please provide the logical volume name.");
return 0;
}
lp->lv_name = argv[0];
if (!validate_lvname_param(cmd, &lp->vg_name, &lp->lv_name))
return_0;
/* Check for $LVM_VG_NAME */
if (!lp->vg_name && !(lp->vg_name = extract_vgname(cmd, NULL))) {
log_error("Please specify a logical volume path.");
return 0;
}
if (arg_is_set(cmd, mirrors_ARG)) {
if (arg_sign_value(cmd, mirrors_ARG, SIGN_NONE) != SIGN_NONE) {
log_error("Mirrors argument may not be signed.");
return 0;
}
if ((lp->mirrors = arg_uint_value(cmd, mirrors_ARG, 0)))
lp->mirrors++;
}
if ((lp->stripes = arg_uint_value(cmd, stripes_ARG, 0)) &&
(arg_sign_value(cmd, stripes_ARG, SIGN_NONE) == SIGN_MINUS)) {
log_error("Stripes argument may not be negative.");
return 0;
}
if (only_linear && lp->stripes > 1) {
log_error("Cannot use stripes with linear type.");
return 0;
}
if ((lp->stripe_size = arg_uint64_value(cmd, stripesize_ARG, 0)) &&
(arg_sign_value(cmd, stripesize_ARG, SIGN_NONE) == SIGN_MINUS)) {
log_error("Stripesize may not be negative.");
return 0;
}
lp->argc = --argc;
lp->argv = ++argv;
return 1;
}
static int _lvresize_single(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg, struct processing_handle *handle)
{
struct lvresize_params *lp = (struct lvresize_params *) handle->custom_handle;
struct dm_list *pvh;
struct logical_volume *lv;
int ret = ECMD_FAILED;
/* Does LV exist? */
if (!(lv = find_lv(vg, lp->lv_name))) {
log_error("Logical volume %s not found in volume group %s.",
lp->lv_name, vg->name);
goto out;
}
if (!(pvh = lp->argc ? create_pv_list(cmd->mem, vg, lp->argc, lp->argv, 1) : &vg->pvs))
goto_out;
if (!lv_resize(lv, lp, pvh))
goto_out;
ret = ECMD_PROCESSED;
out:
return ret;
}
int lvresize(struct cmd_context *cmd, int argc, char **argv)
{
struct processing_handle *handle;
struct lvresize_params lp = {
.alloc = (alloc_policy_t) arg_uint_value(cmd, alloc_ARG, 0),
.yes = arg_is_set(cmd, yes_ARG),
.force = arg_is_set(cmd, force_ARG),
.nofsck = arg_is_set(cmd, nofsck_ARG),
.nosync = arg_is_set(cmd, nosync_ARG),
.resizefs = arg_is_set(cmd, resizefs_ARG),
.lockopt = arg_str_value(cmd, lockopt_ARG, NULL),
};
int ret;
if (!_lvresize_params(cmd, argc, argv, &lp)) {
stack;
return EINVALID_CMD_LINE;
}
if (!(handle = init_processing_handle(cmd, NULL))) {
log_error("Failed to initialize processing handle.");
return ECMD_FAILED;
}
handle->custom_handle = &lp;
ret = process_each_vg(cmd, 0, NULL, lp.vg_name, NULL, READ_FOR_UPDATE, 0, handle,
&_lvresize_single);
destroy_processing_handle(cmd, handle);
if (lp.lockd_lv_refresh_path && !lockd_lv_refresh(cmd, &lp))
ret = ECMD_FAILED;
return ret;
}
|
