diff options
Diffstat (limited to 'tools/vgconvert.c')
| -rw-r--r-- | tools/vgconvert.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/tools/vgconvert.c b/tools/vgconvert.c new file mode 100644 index 00000000..91bd8886 --- /dev/null +++ b/tools/vgconvert.c @@ -0,0 +1,185 @@ +/* + * Copyright (C) 2001 Sistina Software + * + * pvcreate is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * pvcreate is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with LVM; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + */ + +#include "tools.h" +#include "defaults.h" + +static int vgconvert_single(struct cmd_context *cmd, const char *vg_name, + struct volume_group *vg, int consistent, + void *handle) +{ + struct physical_volume *pv, *existing_pv; + uint64_t size = 0; + struct list mdas; + int pvmetadatacopies = 0; + uint64_t pvmetadatasize = 0; + uint64_t pe_end = 0, pe_start = 0; + struct list *pvh; + + if (!vg) { + log_error("Unable to find volume group \"%s\"", vg_name); + return ECMD_FAILED; + } + + if (!consistent) { + unlock_vg(cmd, vg_name); + log_error("Volume group \"%s\" inconsistent", vg_name); + if (!(vg = recover_vg(cmd, vg_name, LCK_VG_WRITE))) + return ECMD_FAILED; + } + + if (!(vg->status & LVM_WRITE)) { + log_error("Volume group \"%s\" is read-only", vg->name); + return ECMD_FAILED; + } + + if (vg->status & EXPORTED_VG) { + log_error("Volume group \"%s\" is exported", vg_name); + 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) { + pvmetadatasize = arg_int64_value(cmd, metadatasize_ARG, 0) * 2; + if (!pvmetadatasize) + pvmetadatasize = + find_config_int(cmd->cf->root, + "metadata/pvmetadatasize", + '/', DEFAULT_PVMETADATASIZE); + + pvmetadatacopies = arg_int_value(cmd, metadatacopies_ARG, -1); + if (pvmetadatacopies < 0) + pvmetadatacopies = + find_config_int(cmd->cf->root, + "metadata/pvmetadatacopies", + '/', DEFAULT_PVMETADATACOPIES); + } + + if (!archive(vg)) { + log_error("Archive of \"%s\" metadata failed.", vg_name); + return ECMD_FAILED; + } + + list_iterate(pvh, &vg->pvs) { + existing_pv = list_item(pvh, struct pv_list)->pv; + + pe_start = existing_pv->pe_start; + pe_end = existing_pv->pe_count * existing_pv->pe_size + + pe_start - 1; + + list_init(&mdas); + if (!(pv = pv_create(cmd->fmt, existing_pv->dev, + &existing_pv->id, size, + pe_start, existing_pv->pe_count, + existing_pv->pe_size, pvmetadatacopies, + pvmetadatasize, &mdas))) { + log_error("Failed to setup physical volume \"%s\"", + dev_name(existing_pv->dev)); + log_error("Use pvcreate and vgcfgrestore to repair " + "from archived metadata."); + return ECMD_FAILED; + } + + log_verbose("Set up physical volume for \"%s\" with %" PRIu64 + " available sectors", dev_name(pv->dev), pv->size); + + /* Wipe existing label first */ + if (!label_remove(pv->dev)) { + log_error("Failed to wipe existing label on %s", + dev_name(pv->dev)); + log_error("Use pvcreate and vgcfgrestore to repair " + "from archived metadata."); + return ECMD_FAILED; + } + + log_very_verbose("Writing physical volume data to disk \"%s\"", + dev_name(pv->dev)); + if (!(pv_write(cmd, pv, &mdas, + arg_int_value(cmd, labelsector_ARG, + DEFAULT_LABELSECTOR)))) { + log_error("Failed to write physical volume \"%s\"", + dev_name(pv->dev)); + log_error("Use pvcreate and vgcfgrestore to repair " + "from archived metadata."); + return ECMD_FAILED; + } + log_verbose("Physical volume \"%s\" successfully created", + dev_name(pv->dev)); + + } + + log_verbose("Deleting existing metadata for VG %s", vg_name); + if (!vg_remove(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; + } + + 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 0; +} + +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 (!(cmd->fmt->features & FMT_MDAS) && + (arg_count(cmd, metadatacopies_ARG) || + arg_count(cmd, metadatasize_ARG))) { + log_error("Metadata parameters only apply to text format"); + return EINVALID_CMD_LINE; + } + + if (arg_count(cmd, metadatacopies_ARG) && + arg_int_value(cmd, metadatacopies_ARG, -1) > 2) { + log_error("Metadatacopies may only be 0, 1 or 2"); + return EINVALID_CMD_LINE; + } + + return process_each_vg(cmd, argc, argv, LCK_VG_WRITE, 0, NULL, + &vgconvert_single); +} |