/* Create list of PVs for allocation of replacement extents */ static struct dm_list *_get_allocatable_pvs(struct cmd_context *cmd, int argc, char **argv, struct volume_group *vg, struct physical_volume *pv, alloc_policy_t alloc) { struct dm_list *allocatable_pvs, *pvht, *pvh; struct pv_list *pvl; if (argc) allocatable_pvs = create_pv_list(cmd->mem, vg, argc, argv, 1); else allocatable_pvs = clone_pv_list(cmd->mem, &vg->pvs); if (!allocatable_pvs) return_NULL; dm_list_iterate_safe(pvh, pvht, allocatable_pvs) { pvl = dm_list_item(pvh, struct pv_list); /* Don't allocate onto the PV we're clearing! */ if ((alloc != ALLOC_ANYWHERE) && (pvl->pv->dev == pv_dev(pv))) { dm_list_del(&pvl->list); continue; } /* Remove PV if full */ if (pvl->pv->pe_count == pvl->pv->pe_alloc_count) dm_list_del(&pvl->list); }
static int _pv_resize_single(struct cmd_context *cmd, struct volume_group *vg, struct physical_volume *pv, const uint64_t new_size) { struct pv_list *pvl; uint64_t size = 0; uint32_t new_pe_count = 0; int r = 0; struct dm_list mdas; const char *pv_name = pv_dev_name(pv); const char *vg_name; struct lvmcache_info *info; int mda_count = 0; struct volume_group *old_vg = vg; dm_list_init(&mdas); if (is_orphan_vg(pv_vg_name(pv))) { vg_name = VG_ORPHANS; if (!lock_vol(cmd, vg_name, LCK_VG_WRITE)) { log_error("Can't get lock for orphans"); return 0; } if (!(pv = pv_read(cmd, pv_name, &mdas, NULL, 1, 0))) { unlock_vg(cmd, vg_name); log_error("Unable to read PV \"%s\"", pv_name); return 0; } mda_count = dm_list_size(&mdas); } else { vg_name = pv_vg_name(pv); vg = vg_read_for_update(cmd, vg_name, NULL, 0); if (vg_read_error(vg)) goto bad; if (!(pvl = find_pv_in_vg(vg, pv_name))) { log_error("Unable to find \"%s\" in volume group \"%s\"", pv_name, vg->name); goto bad; } pv = pvl->pv; if (!(info = info_from_pvid(pv->dev->pvid, 0))) { log_error("Can't get info for PV %s in volume group %s", pv_name, vg->name); goto bad; } mda_count = dm_list_size(&info->mdas); if (!archive(vg)) goto bad; } /* FIXME Create function to test compatibility properly */ if (mda_count > 1) { log_error("%s: too many metadata areas for pvresize", pv_name); goto bad; } if (!(pv->fmt->features & FMT_RESIZE_PV)) { log_error("Physical volume %s format does not support resizing.", pv_name); goto bad; } /* Get new size */ if (!dev_get_size(pv_dev(pv), &size)) { log_error("%s: Couldn't get size.", pv_name); goto bad; } if (new_size) { if (new_size > size) log_warn("WARNING: %s: Overriding real size. " "You could lose data.", pv_name); log_verbose("%s: Pretending size is %" PRIu64 " not %" PRIu64 " sectors.", pv_name, new_size, pv_size(pv)); size = new_size; } if (size < PV_MIN_SIZE) { log_error("%s: Size must exceed minimum of %ld sectors.", pv_name, PV_MIN_SIZE); goto bad; } if (size < pv_pe_start(pv)) { log_error("%s: Size must exceed physical extent start of " "%" PRIu64 " sectors.", pv_name, pv_pe_start(pv)); goto bad; } pv->size = size; if (vg) { pv->size -= pv_pe_start(pv); new_pe_count = pv_size(pv) / vg->extent_size; if (!new_pe_count) { log_error("%s: Size must leave space for at " "least one physical extent of " "%" PRIu32 " sectors.", pv_name, pv_pe_size(pv)); goto bad; } if (!pv_resize(pv, vg, new_pe_count)) goto_bad; } log_verbose("Resizing volume \"%s\" to %" PRIu64 " sectors.", pv_name, pv_size(pv)); log_verbose("Updating physical volume \"%s\"", pv_name); if (!is_orphan_vg(pv_vg_name(pv))) { if (!vg_write(vg) || !vg_commit(vg)) { log_error("Failed to store physical volume \"%s\" in " "volume group \"%s\"", pv_name, vg->name); goto bad; } backup(vg); } else if (!(pv_write(cmd, pv, NULL, INT64_C(-1)))) { log_error("Failed to store physical volume \"%s\"", pv_name); goto bad;; } log_print("Physical volume \"%s\" changed", pv_name); r = 1; bad: unlock_vg(cmd, vg_name); if (!old_vg) vg_release(vg); return r; }
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; }