1 /* $NetBSD: vgconvert.c,v 1.1.1.2 2009/12/02 00:25:56 haad Exp $ */
2
3 /*
4 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
5 * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
6 *
7 * This file is part of LVM2.
8 *
9 * This copyrighted material is made available to anyone wishing to use,
10 * modify, copy, or redistribute it subject to the terms and conditions
11 * of the GNU Lesser General Public License v.2.1.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program; if not, write to the Free Software Foundation,
15 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 */
17
18 #include "tools.h"
19
vgconvert_single(struct cmd_context * cmd,const char * vg_name,struct volume_group * vg,void * handle __attribute ((unused)))20 static int vgconvert_single(struct cmd_context *cmd, const char *vg_name,
21 struct volume_group *vg,
22 void *handle __attribute((unused)))
23 {
24 struct physical_volume *pv, *existing_pv;
25 struct logical_volume *lv;
26 struct lv_list *lvl;
27 uint64_t size = 0;
28 struct dm_list mdas;
29 int pvmetadatacopies = 0;
30 uint64_t pvmetadatasize = 0;
31 uint64_t pe_end = 0, pe_start = 0;
32 struct pv_list *pvl;
33 int change_made = 0;
34 struct lvinfo info;
35 int active = 0;
36
37 if (!vg_check_status(vg, LVM_WRITE | EXPORTED_VG)) {
38 stack;
39 return ECMD_FAILED;
40 }
41
42 if (vg->fid->fmt == cmd->fmt) {
43 log_error("Volume group \"%s\" already uses format %s",
44 vg_name, cmd->fmt->name);
45 return ECMD_FAILED;
46 }
47
48 if (cmd->fmt->features & FMT_MDAS) {
49 if (arg_sign_value(cmd, metadatasize_ARG, 0) == SIGN_MINUS) {
50 log_error("Metadata size may not be negative");
51 return EINVALID_CMD_LINE;
52 }
53
54 pvmetadatasize = arg_uint64_value(cmd, metadatasize_ARG,
55 UINT64_C(0));
56 if (!pvmetadatasize)
57 pvmetadatasize =
58 find_config_tree_int(cmd,
59 "metadata/pvmetadatasize",
60 DEFAULT_PVMETADATASIZE);
61
62 pvmetadatacopies = arg_int_value(cmd, pvmetadatacopies_ARG, -1);
63 if (pvmetadatacopies < 0)
64 pvmetadatacopies =
65 find_config_tree_int(cmd,
66 "metadata/pvmetadatacopies",
67 DEFAULT_PVMETADATACOPIES);
68 }
69
70 if (!archive(vg)) {
71 log_error("Archive of \"%s\" metadata failed.", vg_name);
72 return ECMD_FAILED;
73 }
74
75 /* Set PV/LV limit if converting from unlimited metadata format */
76 if (vg->fid->fmt->features & FMT_UNLIMITED_VOLS &&
77 !(cmd->fmt->features & FMT_UNLIMITED_VOLS)) {
78 if (!vg->max_lv)
79 vg->max_lv = 255;
80 if (!vg->max_pv)
81 vg->max_pv = 255;
82 }
83
84 /* If converting to restricted lvid, check if lvid is compatible */
85 if (!(vg->fid->fmt->features & FMT_RESTRICTED_LVIDS) &&
86 cmd->fmt->features & FMT_RESTRICTED_LVIDS)
87 dm_list_iterate_items(lvl, &vg->lvs)
88 if (!lvid_in_restricted_range(&lvl->lv->lvid)) {
89 log_error("Logical volume %s lvid format is"
90 " incompatible with requested"
91 " metadata format.", lvl->lv->name);
92 return ECMD_FAILED;
93 }
94
95 /* Attempt to change any LVIDs that are too big */
96 if (cmd->fmt->features & FMT_RESTRICTED_LVIDS) {
97 dm_list_iterate_items(lvl, &vg->lvs) {
98 lv = lvl->lv;
99 if (lv->status & SNAPSHOT)
100 continue;
101 if (lvnum_from_lvid(&lv->lvid) < MAX_RESTRICTED_LVS)
102 continue;
103 if (lv_info(cmd, lv, &info, 0, 0) && info.exists) {
104 log_error("Logical volume %s must be "
105 "deactivated before conversion.",
106 lv->name);
107 active++;
108 continue;
109 }
110 lvid_from_lvnum(&lv->lvid, &lv->vg->id, find_free_lvnum(lv));
111
112 }
113 }
114
115 if (active) {
116 stack;
117 return ECMD_FAILED;
118 }
119
120 dm_list_iterate_items(pvl, &vg->pvs) {
121 existing_pv = pvl->pv;
122
123 pe_start = pv_pe_start(existing_pv);
124 pe_end = pv_pe_count(existing_pv) * pv_pe_size(existing_pv)
125 + pe_start - 1;
126
127 dm_list_init(&mdas);
128 if (!(pv = pv_create(cmd, pv_dev(existing_pv),
129 &existing_pv->id, size, 0, 0,
130 pe_start, pv_pe_count(existing_pv),
131 pv_pe_size(existing_pv), pvmetadatacopies,
132 pvmetadatasize, &mdas))) {
133 log_error("Failed to setup physical volume \"%s\"",
134 pv_dev_name(existing_pv));
135 if (change_made)
136 log_error("Use pvcreate and vgcfgrestore to "
137 "repair from archived metadata.");
138 return ECMD_FAILED;
139 }
140
141 /* Need to revert manually if it fails after this point */
142 change_made = 1;
143
144 log_verbose("Set up physical volume for \"%s\" with %" PRIu64
145 " available sectors", pv_dev_name(pv), pv_size(pv));
146
147 /* Wipe existing label first */
148 if (!label_remove(pv_dev(pv))) {
149 log_error("Failed to wipe existing label on %s",
150 pv_dev_name(pv));
151 log_error("Use pvcreate and vgcfgrestore to repair "
152 "from archived metadata.");
153 return ECMD_FAILED;
154 }
155
156 log_very_verbose("Writing physical volume data to disk \"%s\"",
157 pv_dev_name(pv));
158 if (!(pv_write(cmd, pv, &mdas,
159 arg_int64_value(cmd, labelsector_ARG,
160 DEFAULT_LABELSECTOR)))) {
161 log_error("Failed to write physical volume \"%s\"",
162 pv_dev_name(pv));
163 log_error("Use pvcreate and vgcfgrestore to repair "
164 "from archived metadata.");
165 return ECMD_FAILED;
166 }
167 log_verbose("Physical volume \"%s\" successfully created",
168 pv_dev_name(pv));
169
170 }
171
172 log_verbose("Deleting existing metadata for VG %s", vg_name);
173 if (!vg_remove_mdas(vg)) {
174 log_error("Removal of existing metadata for %s failed.",
175 vg_name);
176 log_error("Use pvcreate and vgcfgrestore to repair "
177 "from archived metadata.");
178 return ECMD_FAILED;
179 }
180
181 /* FIXME Cache the label format change so we don't have to skip this */
182 if (test_mode()) {
183 log_verbose("Test mode: Skipping metadata writing for VG %s in"
184 " format %s", vg_name, cmd->fmt->name);
185 return ECMD_PROCESSED;
186 }
187
188 log_verbose("Writing metadata for VG %s using format %s", vg_name,
189 cmd->fmt->name);
190 if (!backup_restore_vg(cmd, vg)) {
191 log_error("Conversion failed for volume group %s.", vg_name);
192 log_error("Use pvcreate and vgcfgrestore to repair from "
193 "archived metadata.");
194 return ECMD_FAILED;
195 }
196 log_print("Volume group %s successfully converted", vg_name);
197
198 backup(vg);
199
200 return ECMD_PROCESSED;
201 }
202
vgconvert(struct cmd_context * cmd,int argc,char ** argv)203 int vgconvert(struct cmd_context *cmd, int argc, char **argv)
204 {
205 if (!argc) {
206 log_error("Please enter volume group(s)");
207 return EINVALID_CMD_LINE;
208 }
209
210 if (arg_int_value(cmd, labelsector_ARG, 0) >= LABEL_SCAN_SECTORS) {
211 log_error("labelsector must be less than %lu",
212 LABEL_SCAN_SECTORS);
213 return EINVALID_CMD_LINE;
214 }
215
216 if (arg_count(cmd, metadatacopies_ARG)) {
217 log_error("Invalid option --metadatacopies, "
218 "use --pvmetadatacopies instead.");
219 return EINVALID_CMD_LINE;
220 }
221 if (!(cmd->fmt->features & FMT_MDAS) &&
222 (arg_count(cmd, pvmetadatacopies_ARG) ||
223 arg_count(cmd, metadatasize_ARG))) {
224 log_error("Metadata parameters only apply to text format");
225 return EINVALID_CMD_LINE;
226 }
227
228 if (arg_count(cmd, pvmetadatacopies_ARG) &&
229 arg_int_value(cmd, pvmetadatacopies_ARG, -1) > 2) {
230 log_error("Metadatacopies may only be 0, 1 or 2");
231 return EINVALID_CMD_LINE;
232 }
233
234 return process_each_vg(cmd, argc, argv, READ_FOR_UPDATE, NULL,
235 &vgconvert_single);
236 }
237