/* $NetBSD: vgconvert.c,v 1.1.1.2 2009/12/02 00:25:56 haad Exp $ */ /* * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. * Copyright (C) 2004-2007 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 "tools.h" static int vgconvert_single(struct cmd_context *cmd, const char *vg_name, struct volume_group *vg, void *handle __attribute((unused))) { struct physical_volume *pv, *existing_pv; struct logical_volume *lv; struct lv_list *lvl; uint64_t size = 0; struct dm_list mdas; int pvmetadatacopies = 0; uint64_t pvmetadatasize = 0; uint64_t pe_end = 0, pe_start = 0; struct pv_list *pvl; int change_made = 0; struct lvinfo info; int active = 0; if (!vg_check_status(vg, LVM_WRITE | EXPORTED_VG)) { stack; return ECMD_FAILED; } if (vg->fid->fmt == cmd->fmt) { log_error("Volume group \"%s\" already uses format %s", vg_name, cmd->fmt->name); return ECMD_FAILED; } if (cmd->fmt->features & FMT_MDAS) { if (arg_sign_value(cmd, metadatasize_ARG, 0) == SIGN_MINUS) { log_error("Metadata size may not be negative"); return EINVALID_CMD_LINE; } pvmetadatasize = arg_uint64_value(cmd, metadatasize_ARG, UINT64_C(0)); if (!pvmetadatasize) pvmetadatasize = find_config_tree_int(cmd, "metadata/pvmetadatasize", DEFAULT_PVMETADATASIZE); pvmetadatacopies = arg_int_value(cmd, pvmetadatacopies_ARG, -1); if (pvmetadatacopies < 0) pvmetadatacopies = find_config_tree_int(cmd, "metadata/pvmetadatacopies", DEFAULT_PVMETADATACOPIES); } if (!archive(vg)) { log_error("Archive of \"%s\" metadata failed.", vg_name); return ECMD_FAILED; } /* Set PV/LV limit if converting from unlimited metadata format */ if (vg->fid->fmt->features & FMT_UNLIMITED_VOLS && !(cmd->fmt->features & FMT_UNLIMITED_VOLS)) { if (!vg->max_lv) vg->max_lv = 255; if (!vg->max_pv) vg->max_pv = 255; } /* If converting to restricted lvid, check if lvid is compatible */ if (!(vg->fid->fmt->features & FMT_RESTRICTED_LVIDS) && cmd->fmt->features & FMT_RESTRICTED_LVIDS) dm_list_iterate_items(lvl, &vg->lvs) if (!lvid_in_restricted_range(&lvl->lv->lvid)) { log_error("Logical volume %s lvid format is" " incompatible with requested" " metadata format.", lvl->lv->name); return ECMD_FAILED; } /* Attempt to change any LVIDs that are too big */ if (cmd->fmt->features & FMT_RESTRICTED_LVIDS) { dm_list_iterate_items(lvl, &vg->lvs) { lv = lvl->lv; if (lv->status & SNAPSHOT) continue; if (lvnum_from_lvid(&lv->lvid) < MAX_RESTRICTED_LVS) continue; if (lv_info(cmd, lv, &info, 0, 0) && info.exists) { log_error("Logical volume %s must be " "deactivated before conversion.", lv->name); active++; continue; } lvid_from_lvnum(&lv->lvid, &lv->vg->id, find_free_lvnum(lv)); } } if (active) { stack; return ECMD_FAILED; } dm_list_iterate_items(pvl, &vg->pvs) { existing_pv = pvl->pv; pe_start = pv_pe_start(existing_pv); pe_end = pv_pe_count(existing_pv) * pv_pe_size(existing_pv) + pe_start - 1; dm_list_init(&mdas); if (!(pv = pv_create(cmd, pv_dev(existing_pv), &existing_pv->id, size, 0, 0, pe_start, pv_pe_count(existing_pv), pv_pe_size(existing_pv), pvmetadatacopies, pvmetadatasize, &mdas))) { log_error("Failed to setup physical volume \"%s\"", pv_dev_name(existing_pv)); if (change_made) log_error("Use pvcreate and vgcfgrestore to " "repair from archived metadata."); return ECMD_FAILED; } /* Need to revert manually if it fails after this point */ change_made = 1; log_verbose("Set up physical volume for \"%s\" with %" PRIu64 " available sectors", pv_dev_name(pv), pv_size(pv)); /* Wipe existing label first */ if (!label_remove(pv_dev(pv))) { log_error("Failed to wipe existing label on %s", pv_dev_name(pv)); log_error("Use pvcreate and vgcfgrestore to repair " "from archived metadata."); return ECMD_FAILED; } log_very_verbose("Writing physical volume data to disk \"%s\"", pv_dev_name(pv)); if (!(pv_write(cmd, pv, &mdas, arg_int64_value(cmd, labelsector_ARG, DEFAULT_LABELSECTOR)))) { log_error("Failed to write physical volume \"%s\"", pv_dev_name(pv)); log_error("Use pvcreate and vgcfgrestore to repair " "from archived metadata."); return ECMD_FAILED; } log_verbose("Physical volume \"%s\" successfully created", pv_dev_name(pv)); } log_verbose("Deleting existing metadata for VG %s", vg_name); if (!vg_remove_mdas(vg)) { log_error("Removal of existing metadata for %s failed.", vg_name); log_error("Use pvcreate and vgcfgrestore to repair " "from archived metadata."); return ECMD_FAILED; } /* FIXME Cache the label format change so we don't have to skip this */ if (test_mode()) { log_verbose("Test mode: Skipping metadata writing for VG %s in" " format %s", vg_name, cmd->fmt->name); return ECMD_PROCESSED; } log_verbose("Writing metadata for VG %s using format %s", vg_name, cmd->fmt->name); if (!backup_restore_vg(cmd, vg)) { log_error("Conversion failed for volume group %s.", vg_name); log_error("Use pvcreate and vgcfgrestore to repair from " "archived metadata."); return ECMD_FAILED; } log_print("Volume group %s successfully converted", vg_name); backup(vg); return ECMD_PROCESSED; } int vgconvert(struct cmd_context *cmd, int argc, char **argv) { if (!argc) { log_error("Please enter volume group(s)"); return EINVALID_CMD_LINE; } if (arg_int_value(cmd, labelsector_ARG, 0) >= LABEL_SCAN_SECTORS) { log_error("labelsector must be less than %lu", LABEL_SCAN_SECTORS); return EINVALID_CMD_LINE; } if (arg_count(cmd, metadatacopies_ARG)) { log_error("Invalid option --metadatacopies, " "use --pvmetadatacopies instead."); return EINVALID_CMD_LINE; } if (!(cmd->fmt->features & FMT_MDAS) && (arg_count(cmd, pvmetadatacopies_ARG) || arg_count(cmd, metadatasize_ARG))) { log_error("Metadata parameters only apply to text format"); return EINVALID_CMD_LINE; } if (arg_count(cmd, pvmetadatacopies_ARG) && arg_int_value(cmd, pvmetadatacopies_ARG, -1) > 2) { log_error("Metadatacopies may only be 0, 1 or 2"); return EINVALID_CMD_LINE; } return process_each_vg(cmd, argc, argv, READ_FOR_UPDATE, NULL, &vgconvert_single); }