static int _pvcreate_restore_params_from_backup(struct cmd_context *cmd, struct pvcreate_params *pp) { struct volume_group *vg; struct pv_list *existing_pvl; /* * When restoring a PV, params need to be read from a backup file. */ if (!pp->restorefile) return 1; if (!(vg = backup_read_vg(cmd, NULL, pp->restorefile))) { log_error("Unable to read volume group from %s", pp->restorefile); return 0; } if (!(existing_pvl = find_pv_in_vg_by_uuid(vg, &pp->pva.id))) { release_vg(vg); log_error("Can't find uuid %s in backup file %s", pp->uuid_str, pp->restorefile); return 0; } pp->pva.ba_start = pv_ba_start(existing_pvl->pv); pp->pva.ba_size = pv_ba_size(existing_pvl->pv); pp->pva.pe_start = pv_pe_start(existing_pvl->pv); pp->pva.extent_size = pv_pe_size(existing_pvl->pv); pp->pva.extent_count = pv_pe_count(existing_pvl->pv); release_vg(vg); return 1; }
/* * Intial sanity checking of recovery-related command-line arguments. * These args are: --restorefile, --uuid, and --physicalvolumesize * * Output arguments: * pp: structure allocated by caller, fields written / validated here */ static int pvcreate_restore_params_validate(struct cmd_context *cmd, int argc, char **argv, struct pvcreate_params *pp) { const char *uuid = NULL; struct volume_group *vg; struct pv_list *existing_pvl; if (arg_count(cmd, restorefile_ARG) && !arg_count(cmd, uuidstr_ARG)) { log_error("--uuid is required with --restorefile"); return 0; } if (!arg_count(cmd, restorefile_ARG) && arg_count(cmd, uuidstr_ARG)) { if (!arg_count(cmd, norestorefile_ARG) && find_config_tree_bool(cmd, devices_require_restorefile_with_uuid_CFG, NULL)) { log_error("--restorefile is required with --uuid"); return 0; } } if (arg_count(cmd, uuidstr_ARG) && argc != 1) { log_error("Can only set uuid on one volume at once"); return 0; } if (arg_count(cmd, uuidstr_ARG)) { uuid = arg_str_value(cmd, uuidstr_ARG, ""); if (!id_read_format(&pp->rp.id, uuid)) return 0; pp->rp.idp = &pp->rp.id; lvmcache_seed_infos_from_lvmetad(cmd); /* need to check for UUID dups */ } if (arg_count(cmd, restorefile_ARG)) { pp->rp.restorefile = arg_str_value(cmd, restorefile_ARG, ""); /* The uuid won't already exist */ if (!(vg = backup_read_vg(cmd, NULL, pp->rp.restorefile))) { log_error("Unable to read volume group from %s", pp->rp.restorefile); return 0; } if (!(existing_pvl = find_pv_in_vg_by_uuid(vg, pp->rp.idp))) { release_vg(vg); log_error("Can't find uuid %s in backup file %s", uuid, pp->rp.restorefile); return 0; } pp->rp.ba_start = pv_ba_start(existing_pvl->pv); pp->rp.ba_size = pv_ba_size(existing_pvl->pv); pp->rp.pe_start = pv_pe_start(existing_pvl->pv); pp->rp.extent_size = pv_pe_size(existing_pvl->pv); pp->rp.extent_count = pv_pe_count(existing_pvl->pv); release_vg(vg); } if (arg_sign_value(cmd, physicalvolumesize_ARG, SIGN_NONE) == SIGN_MINUS) { log_error("Physical volume size may not be negative"); return 0; } pp->size = arg_uint64_value(cmd, physicalvolumesize_ARG, UINT64_C(0)); if (arg_count(cmd, restorefile_ARG) || arg_count(cmd, uuidstr_ARG)) pp->zero = 0; return 1; }
static int pvcreate_single(struct cmd_context *cmd, const char *pv_name, void *handle) { struct pvcreate_params *pp = (struct pvcreate_params *) handle; void *pv; void *existing_pv; struct id id, *idp = NULL; const char *uuid = NULL; uint64_t size = 0; struct device *dev; struct list mdas; int pvmetadatacopies; uint64_t pvmetadatasize; struct volume_group *vg; const char *restorefile; uint64_t pe_start = 0; uint32_t extent_count = 0, extent_size = 0; if (arg_count(cmd, uuidstr_ARG)) { uuid = arg_str_value(cmd, uuidstr_ARG, ""); if (!id_read_format(&id, uuid)) return EINVALID_CMD_LINE; if ((dev = device_from_pvid(cmd, &id)) && (dev != dev_cache_get(pv_name, cmd->filter))) { log_error("uuid %s already in use on \"%s\"", uuid, dev_name(dev)); return ECMD_FAILED; } idp = &id; } if (arg_count(cmd, restorefile_ARG)) { restorefile = arg_str_value(cmd, restorefile_ARG, ""); /* The uuid won't already exist */ init_partial(1); if (!(vg = backup_read_vg(cmd, NULL, restorefile))) { log_error("Unable to read volume group from %s", restorefile); return ECMD_FAILED; } init_partial(0); if (!(existing_pv = find_pv_in_vg_by_uuid(vg, idp))) { log_error("Can't find uuid %s in backup file %s", uuid, restorefile); return ECMD_FAILED; } pe_start = pv_pe_start(existing_pv); extent_size = pv_pe_size(existing_pv); extent_count = pv_pe_count(existing_pv); } if (!lock_vol(cmd, ORPHAN, LCK_VG_WRITE)) { log_error("Can't get lock for orphan PVs"); return ECMD_FAILED; } if (!pvcreate_check(cmd, pv_name)) goto error; if (sigint_caught()) goto error; if (arg_sign_value(cmd, physicalvolumesize_ARG, 0) == SIGN_MINUS) { log_error("Physical volume size may not be negative"); goto error; } size = arg_uint64_value(cmd, physicalvolumesize_ARG, UINT64_C(0)) * 2; if (arg_sign_value(cmd, metadatasize_ARG, 0) == SIGN_MINUS) { log_error("Metadata size may not be negative"); goto error; } pvmetadatasize = arg_uint64_value(cmd, metadatasize_ARG, UINT64_C(0)) * 2; if (!pvmetadatasize) pvmetadatasize = find_config_tree_int(cmd, "metadata/pvmetadatasize", DEFAULT_PVMETADATASIZE); pvmetadatacopies = arg_int_value(cmd, metadatacopies_ARG, -1); if (pvmetadatacopies < 0) pvmetadatacopies = find_config_tree_int(cmd, "metadata/pvmetadatacopies", DEFAULT_PVMETADATACOPIES); if (!(dev = dev_cache_get(pv_name, cmd->filter))) { log_error("%s: Couldn't find device. Check your filters?", pv_name); goto error; } list_init(&mdas); if (!(pv = pv_create(cmd->fmt, dev, idp, size, pe_start, extent_count, extent_size, pvmetadatacopies, pvmetadatasize, &mdas))) { log_error("Failed to setup physical volume \"%s\"", pv_name); goto error; } log_verbose("Set up physical volume for \"%s\" with %" PRIu64 " available sectors", pv_name, pv_size(pv)); /* Wipe existing label first */ if (!label_remove(pv_dev(pv))) { log_error("Failed to wipe existing label on %s", pv_name); goto error; } if (pp->zero) { log_verbose("Zeroing start of device %s", pv_name); if (!dev_open_quiet(dev)) { log_error("%s not opened: device not zeroed", pv_name); goto error; } if (!dev_set(dev, UINT64_C(0), (size_t) 2048, 0)) { log_error("%s not wiped: aborting", pv_name); dev_close(dev); goto error; } dev_close(dev); } log_very_verbose("Writing physical volume data to disk \"%s\"", pv_name); if (!(pv_write(cmd, (struct physical_volume *)pv, &mdas, arg_int64_value(cmd, labelsector_ARG, DEFAULT_LABELSECTOR)))) { log_error("Failed to write physical volume \"%s\"", pv_name); goto error; } log_print("Physical volume \"%s\" successfully created", pv_name); unlock_vg(cmd, ORPHAN); return ECMD_PROCESSED; error: unlock_vg(cmd, ORPHAN); return ECMD_FAILED; }