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 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 } 202 203 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