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
|
/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2006 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "lib.h"
#include "metadata.h"
#include "import-export.h"
#include "lvm-string.h"
/*
* Bitsets held in the 'status' flags get
* converted into arrays of strings.
*/
struct flag {
const uint64_t mask;
const char *description;
int kind;
};
static const struct flag _vg_flags[] = {
{EXPORTED_VG, "EXPORTED", STATUS_FLAG},
{RESIZEABLE_VG, "RESIZEABLE", STATUS_FLAG},
{PVMOVE, "PVMOVE", STATUS_FLAG},
{LVM_READ, "READ", STATUS_FLAG},
{LVM_WRITE, "WRITE", STATUS_FLAG},
{CLUSTERED, "CLUSTERED", STATUS_FLAG},
{SHARED, "SHARED", STATUS_FLAG},
{PARTIAL_VG, NULL, 0},
{PRECOMMITTED, NULL, 0},
{0, NULL, 0}
};
static const struct flag _pv_flags[] = {
{ALLOCATABLE_PV, "ALLOCATABLE", STATUS_FLAG},
{EXPORTED_VG, "EXPORTED", STATUS_FLAG},
{MISSING_PV, "MISSING", COMPATIBLE_FLAG},
{0, NULL, 0}
};
static const struct flag _lv_flags[] = {
{LVM_READ, "READ", STATUS_FLAG},
{LVM_WRITE, "WRITE", STATUS_FLAG},
{FIXED_MINOR, "FIXED_MINOR", STATUS_FLAG},
{VISIBLE_LV, "VISIBLE", STATUS_FLAG},
{PVMOVE, "PVMOVE", STATUS_FLAG},
{LOCKED, "LOCKED", STATUS_FLAG},
{MIRROR_NOTSYNCED, "NOTSYNCED", STATUS_FLAG},
{MIRROR_IMAGE, NULL, 0},
{MIRROR_LOG, NULL, 0},
{MIRRORED, NULL, 0},
{VIRTUAL, NULL, 0},
{SNAPSHOT, NULL, 0},
{MERGING, NULL, 0},
{ACTIVATE_EXCL, NULL, 0},
{CONVERTING, NULL, 0},
{PARTIAL_LV, NULL, 0},
{POSTORDER_FLAG, NULL, 0},
{VIRTUAL_ORIGIN, NULL, 0},
{REPLICATOR, NULL, 0},
{REPLICATOR_LOG, NULL, 0},
{0, NULL, 0}
};
static const struct flag *_get_flags(int type)
{
switch (type & ~STATUS_FLAG) {
case VG_FLAGS:
return _vg_flags;
case PV_FLAGS:
return _pv_flags;
case LV_FLAGS:
return _lv_flags;
}
log_error("Unknown flag set requested.");
return NULL;
}
/*
* Converts a bitset to an array of string values,
* using one of the tables defined at the top of
* the file.
*/
int print_flags(uint64_t status, int type, char *buffer, size_t size)
{
int f, first = 1;
const struct flag *flags;
if (!(flags = _get_flags(type)))
return_0;
if (!emit_to_buffer(&buffer, &size, "["))
return 0;
for (f = 0; flags[f].mask; f++) {
if (status & flags[f].mask) {
status &= ~flags[f].mask;
if ((type & STATUS_FLAG) != flags[f].kind)
continue;
/* Internal-only flag? */
if (!flags[f].description)
continue;
if (!first) {
if (!emit_to_buffer(&buffer, &size, ", "))
return 0;
} else
first = 0;
if (!emit_to_buffer(&buffer, &size, "\"%s\"",
flags[f].description))
return 0;
}
}
if (!emit_to_buffer(&buffer, &size, "]"))
return 0;
if (status)
log_error("Metadata inconsistency: Not all flags successfully "
"exported.");
return 1;
}
int read_flags(uint64_t *status, int type, const struct config_value *cv)
{
int f;
uint64_t s = UINT64_C(0);
const struct flag *flags;
if (!(flags = _get_flags(type)))
return_0;
if (cv->type == CFG_EMPTY_ARRAY)
goto out;
while (cv) {
if (cv->type != CFG_STRING) {
log_error("Status value is not a string.");
return 0;
}
for (f = 0; flags[f].description; f++)
if (!strcmp(flags[f].description, cv->v.str)) {
s |= flags[f].mask;
break;
}
if (type == VG_FLAGS && !strcmp(cv->v.str, "PARTIAL")) {
/*
* Exception: We no longer write this flag out, but it
* might be encountered in old backup files, so restore
* it in that case. It is never part of live metadata
* though, so only vgcfgrestore needs to be concerned
* by this case.
*/
s |= PARTIAL_VG;
} else if (!flags[f].description && (type & STATUS_FLAG)) {
log_error("Unknown status flag '%s'.", cv->v.str);
return 0;
}
cv = cv->next;
}
out:
*status |= s;
return 1;
}
|
