/* * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. * Copyright (C) 2004-2015 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "tools.h" #include "format1.h" #include "format-text.h" #include #include #include #include #define report_log_ret_code(ret_code) report_current_object_cmdlog(REPORT_OBJECT_CMDLOG_NAME, \ ret_code == ECMD_PROCESSED ? REPORT_OBJECT_CMDLOG_SUCCESS \ : REPORT_OBJECT_CMDLOG_FAILURE, ret_code) struct device_id_list { struct dm_list list; struct device *dev; char pvid[ID_LEN + 1]; }; const char *command_name(struct cmd_context *cmd) { return cmd->command->name; } static void _sigchld_handler(int sig __attribute__((unused))) { while (wait4(-1, NULL, WNOHANG | WUNTRACED, NULL) > 0) ; } /* * returns: * -1 if the fork failed * 0 if the parent * 1 if the child */ int become_daemon(struct cmd_context *cmd, int skip_lvm) { static const char devnull[] = "/dev/null"; int null_fd; pid_t pid; struct sigaction act = { {_sigchld_handler}, .sa_flags = SA_NOCLDSTOP, }; log_verbose("Forking background process from command: %s", cmd->cmd_line); sigaction(SIGCHLD, &act, NULL); if (!skip_lvm) if (!sync_local_dev_names(cmd)) { /* Flush ops and reset dm cookie */ log_error("Failed to sync local devices before forking."); return -1; } if ((pid = fork()) == -1) { log_error("fork failed: %s", strerror(errno)); return -1; } /* Parent */ if (pid > 0) return 0; /* Child */ if (setsid() == -1) log_error("Background process failed to setsid: %s", strerror(errno)); /* Set this to avoid discarding output from background process */ // #define DEBUG_CHILD #ifndef DEBUG_CHILD if ((null_fd = open(devnull, O_RDWR)) == -1) { log_sys_error("open", devnull); _exit(ECMD_FAILED); } if ((dup2(null_fd, STDIN_FILENO) < 0) || /* reopen stdin */ (dup2(null_fd, STDOUT_FILENO) < 0) || /* reopen stdout */ (dup2(null_fd, STDERR_FILENO) < 0)) { /* reopen stderr */ log_sys_error("dup2", "redirect"); (void) close(null_fd); _exit(ECMD_FAILED); } if (null_fd > STDERR_FILENO) (void) close(null_fd); init_verbose(VERBOSE_BASE_LEVEL); #endif /* DEBUG_CHILD */ strncpy(*cmd->argv, "(lvm2)", strlen(*cmd->argv)); lvmetad_disconnect(); if (!skip_lvm) { reset_locking(); lvmcache_destroy(cmd, 1, 1); if (!lvmcache_init()) /* FIXME Clean up properly here */ _exit(ECMD_FAILED); } dev_close_all(); return 1; } /* * Strip dev_dir if present */ const char *skip_dev_dir(struct cmd_context *cmd, const char *vg_name, unsigned *dev_dir_found) { size_t devdir_len = strlen(cmd->dev_dir); const char *dmdir = dm_dir() + devdir_len; size_t dmdir_len = strlen(dmdir), vglv_sz; char *vgname, *lvname, *layer, *vglv; /* FIXME Do this properly */ if (*vg_name == '/') while (vg_name[1] == '/') vg_name++; if (strncmp(vg_name, cmd->dev_dir, devdir_len)) { if (dev_dir_found) *dev_dir_found = 0; } else { if (dev_dir_found) *dev_dir_found = 1; vg_name += devdir_len; while (*vg_name == '/') vg_name++; /* Reformat string if /dev/mapper found */ if (!strncmp(vg_name, dmdir, dmdir_len) && vg_name[dmdir_len] == '/') { vg_name += dmdir_len + 1; while (*vg_name == '/') vg_name++; if (!dm_split_lvm_name(cmd->mem, vg_name, &vgname, &lvname, &layer) || *layer) { log_error("skip_dev_dir: Couldn't split up device name %s.", vg_name); return vg_name; } vglv_sz = strlen(vgname) + strlen(lvname) + 2; if (!(vglv = dm_pool_alloc(cmd->mem, vglv_sz)) || dm_snprintf(vglv, vglv_sz, "%s%s%s", vgname, *lvname ? "/" : "", lvname) < 0) { log_error("vg/lv string alloc failed."); return vg_name; } return vglv; } } return vg_name; } /* * Three possible results: * a) return 0, skip 0: take the VG, and cmd will end in success * b) return 0, skip 1: skip the VG, and cmd will end in success * c) return 1, skip *: skip the VG, and cmd will end in failure * * Case b is the special case, and includes the following: * . The VG is inconsistent, and the command allows for inconsistent VGs. * . The VG is clustered, the host cannot access clustered VG's, * and the command option has been used to ignore clustered vgs. * * Case c covers the other errors returned when reading the VG. * If *skip is 1, it's OK for the caller to read the list of PVs in the VG. */ static int _ignore_vg(struct volume_group *vg, const char *vg_name, struct dm_list *arg_vgnames, uint32_t read_flags, int *skip, int *notfound) { uint32_t read_error = vg_read_error(vg); *skip = 0; *notfound = 0; if ((read_error & FAILED_NOTFOUND) && (read_flags & READ_OK_NOTFOUND)) { *notfound = 1; return 0; } if ((read_error & FAILED_INCONSISTENT) && (read_flags & READ_ALLOW_INCONSISTENT)) read_error &= ~FAILED_INCONSISTENT; /* Check for other errors */ if ((read_error & FAILED_CLUSTERED) && vg->cmd->ignore_clustered_vgs) { read_error &= ~FAILED_CLUSTERED; /* Check for other errors */ log_verbose("Skipping volume group %s", vg_name); *skip = 1; } /* * Commands that operate on "all vgs" shouldn't be bothered by * skipping a foreign VG, and the command shouldn't fail when * one is skipped. But, if the command explicitly asked to * operate on a foreign VG and it's skipped, then the command * would expect to fail. */ if (read_error & FAILED_SYSTEMID) { if (arg_vgnames && str_list_match_item(arg_vgnames, vg->name)) { log_error("Cannot access VG %s with system ID %s with %slocal system ID%s%s.", vg->name, vg->system_id, vg->cmd->system_id ? "" : "unknown ", vg->cmd->system_id ? " " : "", vg->cmd->system_id ? vg->cmd->system_id : ""); return 1; } else { read_error &= ~FAILED_SYSTEMID; /* Check for other errors */ log_verbose("Skipping foreign volume group %s", vg_name); *skip = 1; } } /* * Accessing a lockd VG when lvmlockd is not used is similar * to accessing a foreign VG. * This is also the point where a command fails if it failed * to acquire the necessary lock from lvmlockd. * The two cases are distinguished by FAILED_LOCK_TYPE (the * VG lock_type requires lvmlockd), and FAILED_LOCK_MODE (the * command failed to acquire the necessary lock.) */ if (read_error & (FAILED_LOCK_TYPE | FAILED_LOCK_MODE)) { if (arg_vgnames && str_list_match_item(arg_vgnames, vg->name)) { if (read_error & FAILED_LOCK_TYPE) log_error("Cannot access VG %s with lock type %s that requires lvmlockd.", vg->name, vg->lock_type); /* For FAILED_LOCK_MODE, the error is printed in vg_read. */ return 1; } else { read_error &= ~FAILED_LOCK_TYPE; /* Check for other errors */ read_error &= ~FAILED_LOCK_MODE; log_verbose("Skipping volume group %s", vg_name); *skip = 1; } } if (read_error == FAILED_CLUSTERED) { *skip = 1; stack; /* Error already logged */ return 1; } if (read_error != SUCCESS) { *skip = 0; if (is_orphan_vg(vg_name)) log_error("Cannot process standalone physical volumes"); else log_error("Cannot process volume group %s", vg_name); return 1; } return 0; } /* * This functiona updates the "selected" arg only if last item processed * is selected so this implements the "whole structure is selected if * at least one of its items is selected". */ static void _update_selection_result(struct processing_handle *handle, int *selected) { if (!handle || !handle->selection_handle) return; if (handle->selection_handle->selected) *selected = 1; } static void _set_final_selection_result(struct processing_handle *handle, int selected) { if (!handle || !handle->selection_handle) return; handle->selection_handle->selected = selected; } /* * Metadata iteration functions */ int process_each_segment_in_pv(struct cmd_context *cmd, struct volume_group *vg, struct physical_volume *pv, struct processing_handle *handle, process_single_pvseg_fn_t process_single_pvseg) { struct pv_segment *pvseg; int whole_selected = 0; int ret_max = ECMD_PROCESSED; int ret; struct pv_segment _free_pv_segment = { .pv = pv }; if (dm_list_empty(&pv->segments)) { ret = process_single_pvseg(cmd, NULL, &_free_pv_segment, handle); if (ret != ECMD_PROCESSED) stack; if (ret > ret_max) ret_max = ret; } else { dm_list_iterate_items(pvseg, &pv->segments) { if (sigint_caught()) return_ECMD_FAILED; ret = process_single_pvseg(cmd, vg, pvseg, handle); _update_selection_result(handle, &whole_selected); if (ret != ECMD_PROCESSED) stack; if (ret > ret_max) ret_max = ret; } } /* the PV is selected if at least one PV segment is selected */ _set_final_selection_result(handle, whole_selected); return ret_max; } int process_each_segment_in_lv(struct cmd_context *cmd, struct logical_volume *lv, struct processing_handle *handle, process_single_seg_fn_t process_single_seg) { struct lv_segment *seg; int whole_selected = 0; int ret_max = ECMD_PROCESSED; int ret; dm_list_iterate_items(seg, &lv->segments) { if (sigint_caught()) return_ECMD_FAILED; ret = process_single_seg(cmd, seg, handle); _update_selection_result(handle, &whole_selected); if (ret != ECMD_PROCESSED) stack; if (ret > ret_max) ret_max = ret; } /* the LV is selected if at least one LV segment is selected */ _set_final_selection_result(handle, whole_selected); return ret_max; } static const char *_extract_vgname(struct cmd_context *cmd, const char *lv_name, const char **after) { const char *vg_name = lv_name; char *st, *pos; /* Strip dev_dir (optional) */ if (!(vg_name = skip_dev_dir(cmd, vg_name, NULL))) return_0; /* Require exactly one set of consecutive slashes */ if ((st = pos = strchr(vg_name, '/'))) while (*st == '/') st++; if (!st || strchr(st, '/')) { log_error("\"%s\": Invalid path for Logical Volume.", lv_name); return 0; } if (!(vg_name = dm_pool_strndup(cmd->mem, vg_name, pos - vg_name))) { log_error("Allocation of vg_name failed."); return 0; } if (after) *after = st; return vg_name; } /* * Extract default volume group name from environment */ static const char *_default_vgname(struct cmd_context *cmd) { const char *vg_path; /* Take default VG from environment? */ vg_path = getenv("LVM_VG_NAME"); if (!vg_path) return 0; vg_path = skip_dev_dir(cmd, vg_path, NULL); if (strchr(vg_path, '/')) { log_error("\"%s\": Invalid environment var LVM_VG_NAME set for Volume Group.", vg_path); return 0; } return dm_pool_strdup(cmd->mem, vg_path); } /* * Determine volume group name from a logical volume name */ const char *extract_vgname(struct cmd_context *cmd, const char *lv_name) { const char *vg_name = lv_name; /* Path supplied? */ if (vg_name && strchr(vg_name, '/')) { if (!(vg_name = _extract_vgname(cmd, lv_name, NULL))) return_NULL; return vg_name; } if (!(vg_name = _default_vgname(cmd))) { if (lv_name) log_error("Path required for Logical Volume \"%s\".", lv_name); return NULL; } return vg_name; } /* * Process physical extent range specifiers */ static int _add_pe_range(struct dm_pool *mem, const char *pvname, struct dm_list *pe_ranges, uint32_t start, uint32_t count) { struct pe_range *per; log_debug("Adding PE range: start PE " FMTu32 " length " FMTu32 " on %s.", start, count, pvname); /* Ensure no overlap with existing areas */ dm_list_iterate_items(per, pe_ranges) { if (((start < per->start) && (start + count - 1 >= per->start)) || ((start >= per->start) && (per->start + per->count - 1) >= start)) { log_error("Overlapping PE ranges specified (" FMTu32 "-" FMTu32 ", " FMTu32 "-" FMTu32 ") on %s.", start, start + count - 1, per->start, per->start + per->count - 1, pvname); return 0; } } if (!(per = dm_pool_alloc(mem, sizeof(*per)))) { log_error("Allocation of list failed."); return 0; } per->start = start; per->count = count; dm_list_add(pe_ranges, &per->list); return 1; } static int _xstrtouint32(const char *s, char **p, int base, uint32_t *result) { unsigned long ul; errno = 0; ul = strtoul(s, p, base); if (errno || *p == s || ul > UINT32_MAX) return 0; *result = ul; return 1; } static int _parse_pes(struct dm_pool *mem, char *c, struct dm_list *pe_ranges, const char *pvname, uint32_t size) { char *endptr; uint32_t start, end, len; /* Default to whole PV */ if (!c) { if (!_add_pe_range(mem, pvname, pe_ranges, UINT32_C(0), size)) return_0; return 1; } while (*c) { if (*c != ':') goto error; c++; /* Disallow :: and :\0 */ if (*c == ':' || !*c) goto error; /* Default to whole range */ start = UINT32_C(0); end = size - 1; /* Start extent given? */ if (isdigit(*c)) { if (!_xstrtouint32(c, &endptr, 10, &start)) goto error; c = endptr; /* Just one number given? */ if (!*c || *c == ':') end = start; } /* Range? */ if (*c == '-') { c++; if (isdigit(*c)) { if (!_xstrtouint32(c, &endptr, 10, &end)) goto error; c = endptr; } } else if (*c == '+') { /* Length? */ c++; if (isdigit(*c)) { if (!_xstrtouint32(c, &endptr, 10, &len)) goto error; c = endptr; end = start + (len ? (len - 1) : 0); } } if (*c && *c != ':') goto error; if ((start > end) || (end > size - 1)) { log_error("PE range error: start extent %" PRIu32 " to " "end extent %" PRIu32 ".", start, end); return 0; } if (!_add_pe_range(mem, pvname, pe_ranges, start, end - start + 1)) return_0; } return 1; error: log_error("Physical extent parsing error at %s.", c); return 0; } static int _create_pv_entry(struct dm_pool *mem, struct pv_list *pvl, char *colon, int allocatable_only, struct dm_list *r) { const char *pvname; struct pv_list *new_pvl = NULL, *pvl2; struct dm_list *pe_ranges; pvname = pv_dev_name(pvl->pv); if (allocatable_only && !(pvl->pv->status & ALLOCATABLE_PV)) { log_warn("WARNING: Physical volume %s not allocatable.", pvname); return 1; } if (allocatable_only && is_missing_pv(pvl->pv)) { log_warn("WARNING: Physical volume %s is missing.", pvname); return 1; } if (allocatable_only && (pvl->pv->pe_count == pvl->pv->pe_alloc_count)) { log_warn("WARNING: No free extents on physical volume \"%s\".", pvname); return 1; } dm_list_iterate_items(pvl2, r) if (pvl->pv->dev == pvl2->pv->dev) { new_pvl = pvl2; break; } if (!new_pvl) { if (!(new_pvl = dm_pool_alloc(mem, sizeof(*new_pvl)))) { log_error("Unable to allocate physical volume list."); return 0; } memcpy(new_pvl, pvl, sizeof(*new_pvl)); if (!(pe_ranges = dm_pool_alloc(mem, sizeof(*pe_ranges)))) { log_error("Allocation of pe_ranges list failed."); return 0; } dm_list_init(pe_ranges); new_pvl->pe_ranges = pe_ranges; dm_list_add(r, &new_pvl->list); } /* Determine selected physical extents */ if (!_parse_pes(mem, colon, new_pvl->pe_ranges, pv_dev_name(pvl->pv), pvl->pv->pe_count)) return_0; return 1; } struct dm_list *create_pv_list(struct dm_pool *mem, struct volume_group *vg, int argc, char **argv, int allocatable_only) { struct dm_list *r; struct pv_list *pvl; struct dm_list tagsl, arg_pvnames; char *pvname = NULL; char *colon, *at_sign, *tagname; int i; /* Build up list of PVs */ if (!(r = dm_pool_alloc(mem, sizeof(*r)))) { log_error("Allocation of list failed."); return NULL; } dm_list_init(r); dm_list_init(&tagsl); dm_list_init(&arg_pvnames); for (i = 0; i < argc; i++) { dm_unescape_colons_and_at_signs(argv[i], &colon, &at_sign); if (at_sign && (at_sign == argv[i])) { tagname = at_sign + 1; if (!validate_tag(tagname)) { log_error("Skipping invalid tag %s.", tagname); continue; } dm_list_iterate_items(pvl, &vg->pvs) { if (str_list_match_item(&pvl->pv->tags, tagname)) { if (!_create_pv_entry(mem, pvl, NULL, allocatable_only, r)) return_NULL; } } continue; } pvname = argv[i]; if (colon && !(pvname = dm_pool_strndup(mem, pvname, (unsigned) (colon - pvname)))) { log_error("Failed to clone PV name."); return NULL; } if (!(pvl = find_pv_in_vg(vg, pvname))) { log_error("Physical Volume \"%s\" not found in " "Volume Group \"%s\".", pvname, vg->name); return NULL; } if (!_create_pv_entry(mem, pvl, colon, allocatable_only, r)) return_NULL; } if (dm_list_empty(r)) log_error("No specified PVs have space available."); return dm_list_empty(r) ? NULL : r; } struct dm_list *clone_pv_list(struct dm_pool *mem, struct dm_list *pvsl) { struct dm_list *r; struct pv_list *pvl, *new_pvl; /* Build up list of PVs */ if (!(r = dm_pool_alloc(mem, sizeof(*r)))) { log_error("Allocation of list failed."); return NULL; } dm_list_init(r); dm_list_iterate_items(pvl, pvsl) { if (!(new_pvl = dm_pool_zalloc(mem, sizeof(*new_pvl)))) { log_error("Unable to allocate physical volume list."); return NULL; } memcpy(new_pvl, pvl, sizeof(*new_pvl)); dm_list_add(r, &new_pvl->list); } return r; } const char _pe_size_may_not_be_negative_msg[] = "Physical extent size may not be negative."; int vgcreate_params_set_defaults(struct cmd_context *cmd, struct vgcreate_params *vp_def, struct volume_group *vg) { int64_t extent_size; /* Only vgsplit sets vg */ if (vg) { vp_def->vg_name = NULL; vp_def->extent_size = vg->extent_size; vp_def->max_pv = vg->max_pv; vp_def->max_lv = vg->max_lv; vp_def->alloc = vg->alloc; vp_def->clustered = vg_is_clustered(vg); vp_def->vgmetadatacopies = vg->mda_copies; vp_def->system_id = vg->system_id; /* No need to clone this */ } else { vp_def->vg_name = NULL; extent_size = find_config_tree_int64(cmd, allocation_physical_extent_size_CFG, NULL) * 2; if (extent_size < 0) { log_error(_pe_size_may_not_be_negative_msg); return 0; } vp_def->extent_size = (uint32_t) extent_size; vp_def->max_pv = DEFAULT_MAX_PV; vp_def->max_lv = DEFAULT_MAX_LV; vp_def->alloc = DEFAULT_ALLOC_POLICY; vp_def->clustered = DEFAULT_CLUSTERED; vp_def->vgmetadatacopies = DEFAULT_VGMETADATACOPIES; vp_def->system_id = cmd->system_id; } return 1; } /* * Set members of struct vgcreate_params from cmdline arguments. * Do preliminary validation with arg_*() interface. * Further, more generic validation is done in validate_vgcreate_params(). * This function is to remain in tools directory. */ int vgcreate_params_set_from_args(struct cmd_context *cmd, struct vgcreate_params *vp_new, struct vgcreate_params *vp_def) { const char *system_id_arg_str; const char *lock_type = NULL; int locking_type; int use_lvmlockd; int use_clvmd; lock_type_t lock_type_num; vp_new->vg_name = skip_dev_dir(cmd, vp_def->vg_name, NULL); vp_new->max_lv = arg_uint_value(cmd, maxlogicalvolumes_ARG, vp_def->max_lv); vp_new->max_pv = arg_uint_value(cmd, maxphysicalvolumes_ARG, vp_def->max_pv); vp_new->alloc = (alloc_policy_t) arg_uint_value(cmd, alloc_ARG, vp_def->alloc); /* Units of 512-byte sectors */ vp_new->extent_size = arg_uint_value(cmd, physicalextentsize_ARG, vp_def->extent_size); if (arg_sign_value(cmd, physicalextentsize_ARG, SIGN_NONE) == SIGN_MINUS) { log_error(_pe_size_may_not_be_negative_msg); return 0; } if (arg_uint64_value(cmd, physicalextentsize_ARG, 0) > MAX_EXTENT_SIZE) { log_error("Physical extent size must be smaller than %s.", display_size(cmd, (uint64_t) MAX_EXTENT_SIZE)); return 0; } if (arg_sign_value(cmd, maxlogicalvolumes_ARG, SIGN_NONE) == SIGN_MINUS) { log_error("Max Logical Volumes may not be negative."); return 0; } if (arg_sign_value(cmd, maxphysicalvolumes_ARG, SIGN_NONE) == SIGN_MINUS) { log_error("Max Physical Volumes may not be negative."); return 0; } if (arg_is_set(cmd, vgmetadatacopies_ARG)) vp_new->vgmetadatacopies = arg_int_value(cmd, vgmetadatacopies_ARG, DEFAULT_VGMETADATACOPIES); else vp_new->vgmetadatacopies = find_config_tree_int(cmd, metadata_vgmetadatacopies_CFG, NULL); if (!(system_id_arg_str = arg_str_value(cmd, systemid_ARG, NULL))) { vp_new->system_id = vp_def->system_id; } else { if (!(vp_new->system_id = system_id_from_string(cmd, system_id_arg_str))) return_0; /* FIXME Take local/extra_system_ids into account */ if (vp_new->system_id && cmd->system_id && strcmp(vp_new->system_id, cmd->system_id)) { if (*vp_new->system_id) log_warn("VG with system ID %s might become inaccessible as local system ID is %s", vp_new->system_id, cmd->system_id); else log_warn("WARNING: A VG without a system ID allows unsafe access from other hosts."); } } if ((system_id_arg_str = arg_str_value(cmd, systemid_ARG, NULL))) { vp_new->system_id = system_id_from_string(cmd, system_id_arg_str); } else { vp_new->system_id = vp_def->system_id; } if (system_id_arg_str) { if (!vp_new->system_id || !vp_new->system_id[0]) log_warn("WARNING: A VG without a system ID allows unsafe access from other hosts."); if (vp_new->system_id && cmd->system_id && strcmp(vp_new->system_id, cmd->system_id)) { log_warn("VG with system ID %s might become inaccessible as local system ID is %s", vp_new->system_id, cmd->system_id); } } /* * Locking: what kind of locking should be used for the * new VG, and is it compatible with current lvm.conf settings. * * The end result is to set vp_new->lock_type to: * none | clvm | dlm | sanlock. * * If 'vgcreate --lock-type ' is set, the answer is given * directly by which is one of none|clvm|dlm|sanlock. * * 'vgcreate --clustered y' is the way to create clvm VGs. * * 'vgcreate --shared' is the way to create lockd VGs. * lock_type of sanlock or dlm is selected based on * which lock manager is running. * * * 1. Using neither clvmd nor lvmlockd. * ------------------------------------------------ * lvm.conf: * global/use_lvmlockd = 0 * global/locking_type = 1 * * - no locking is enabled * - clvmd is not used * - lvmlockd is not used * - VGs with CLUSTERED set are ignored (requires clvmd) * - VGs with lockd type are ignored (requires lvmlockd) * - vgcreate can create new VGs with lock_type none * - 'vgcreate --clustered y' fails * - 'vgcreate --shared' fails * - 'vgcreate' (neither option) creates a local VG * * 2. Using clvmd. * ------------------------------------------------ * lvm.conf: * global/use_lvmlockd = 0 * global/locking_type = 3 * * - locking through clvmd is enabled (traditional clvm config) * - clvmd is used * - lvmlockd is not used * - VGs with CLUSTERED set can be used * - VGs with lockd type are ignored (requires lvmlockd) * - vgcreate can create new VGs with CLUSTERED status flag * - 'vgcreate --clustered y' works * - 'vgcreate --shared' fails * - 'vgcreate' (neither option) creates a clvm VG * * 3. Using lvmlockd. * ------------------------------------------------ * lvm.conf: * global/use_lvmlockd = 1 * global/locking_type = 1 * * - locking through lvmlockd is enabled * - clvmd is not used * - lvmlockd is used * - VGs with CLUSTERED set are ignored (requires clvmd) * - VGs with lockd type can be used * - vgcreate can create new VGs with lock_type sanlock or dlm * - 'vgcreate --clustered y' fails * - 'vgcreate --shared' works * - 'vgcreate' (neither option) creates a local VG */ locking_type = find_config_tree_int(cmd, global_locking_type_CFG, NULL); use_lvmlockd = find_config_tree_bool(cmd, global_use_lvmlockd_CFG, NULL); use_clvmd = (locking_type == 3); if (arg_is_set(cmd, locktype_ARG)) { if (arg_is_set(cmd, clustered_ARG)) { log_error("A lock type cannot be specified with --clustered."); return 0; } lock_type = arg_str_value(cmd, locktype_ARG, ""); if (arg_is_set(cmd, shared_ARG) && !is_lockd_type(lock_type)) { log_error("The --shared option requires lock type sanlock or dlm."); return 0; } } else if (arg_is_set(cmd, clustered_ARG)) { const char *arg_str = arg_str_value(cmd, clustered_ARG, ""); int clustery = strcmp(arg_str, "y") ? 0 : 1; if (use_clvmd) { lock_type = clustery ? "clvm" : "none"; } else if (use_lvmlockd) { log_error("lvmlockd is configured, use --shared with lvmlockd, and --clustered with clvmd."); return 0; } else { if (clustery) { log_error("The --clustered option requires clvmd (locking_type=3)."); return 0; } else { lock_type = "none"; } } } else if (arg_is_set(cmd, shared_ARG)) { int found_multiple = 0; if (use_lvmlockd) { if (!(lock_type = lockd_running_lock_type(cmd, &found_multiple))) { if (found_multiple) log_error("Found multiple lock managers, select one with --lock-type."); else log_error("Failed to detect a running lock manager to select lock type."); return 0; } } else if (use_clvmd) { log_error("Use --shared with lvmlockd, and --clustered with clvmd."); return 0; } else { log_error("Using a shared lock type requires lvmlockd."); return 0; } } else { if (use_clvmd) lock_type = locking_is_clustered() ? "clvm" : "none"; else lock_type = "none"; } /* * Check that the lock_type is recognized, and is being * used with the correct lvm.conf settings. */ lock_type_num = get_lock_type_from_string(lock_type); switch (lock_type_num) { case LOCK_TYPE_INVALID: log_error("lock_type %s is invalid", lock_type); return 0; case LOCK_TYPE_SANLOCK: case LOCK_TYPE_DLM: if (!use_lvmlockd) { log_error("Using a shared lock type requires lvmlockd."); return 0; } break; case LOCK_TYPE_CLVM: if (!use_clvmd) { log_error("Using clvm requires locking_type 3."); return 0; } break; case LOCK_TYPE_NONE: break; }; /* * The vg is not owned by one host/system_id. * Locking coordinates access from multiple hosts. */ if (lock_type_num == LOCK_TYPE_DLM || lock_type_num == LOCK_TYPE_SANLOCK || lock_type_num == LOCK_TYPE_CLVM) vp_new->system_id = NULL; vp_new->lock_type = lock_type; if (lock_type_num == LOCK_TYPE_CLVM) vp_new->clustered = 1; else vp_new->clustered = 0; log_debug("Setting lock_type to %s", vp_new->lock_type); return 1; } /* Shared code for changing activation state for vgchange/lvchange */ int lv_change_activate(struct cmd_context *cmd, struct logical_volume *lv, activation_change_t activate) { int r = 1; struct logical_volume *snapshot_lv; if (lv_is_cache_pool(lv)) { if (is_change_activating(activate)) { log_verbose("Skipping activation of cache pool %s.", display_lvname(lv)); return 1; } if (!dm_list_empty(&lv->segs_using_this_lv)) { log_verbose("Skipping deactivation of used cache pool %s.", display_lvname(lv)); return 1; } /* * Allow to pass only deactivation of unused cache pool. * Useful only for recovery of failed zeroing of metadata LV. */ } if (lv_is_merging_origin(lv)) { /* * For merging origin, its snapshot must be inactive. * If it's still active and cannot be deactivated * activation or deactivation of origin fails! * * When origin is deactivated and merging snapshot is thin * it allows to deactivate origin, but still report error, * since the thin snapshot remains active. * * User could retry to deactivate it with another * deactivation of origin, which is the only visible LV */ snapshot_lv = find_snapshot(lv)->lv; if (lv_is_thin_type(snapshot_lv) && !deactivate_lv(cmd, snapshot_lv)) { if (is_change_activating(activate)) { log_error("Refusing to activate merging volume %s while " "snapshot volume %s is still active.", display_lvname(lv), display_lvname(snapshot_lv)); return 0; } log_error("Cannot fully deactivate merging origin volume %s while " "snapshot volume %s is still active.", display_lvname(lv), display_lvname(snapshot_lv)); r = 0; /* and continue to deactivate origin... */ } } if (is_change_activating(activate) && lvmcache_found_duplicate_pvs() && vg_has_duplicate_pvs(lv->vg) && !find_config_tree_bool(cmd, devices_allow_changes_with_duplicate_pvs_CFG, NULL)) { log_error("Cannot activate LVs in VG %s while PVs appear on duplicate devices.", lv->vg->name); return 0; } if (!lv_active_change(cmd, lv, activate, 0)) return_0; set_lv_notify(lv->vg->cmd); return r; } int lv_refresh(struct cmd_context *cmd, struct logical_volume *lv) { struct logical_volume *snapshot_lv; if (lv_is_merging_origin(lv)) { snapshot_lv = find_snapshot(lv)->lv; if (lv_is_thin_type(snapshot_lv) && !deactivate_lv(cmd, snapshot_lv)) log_print_unless_silent("Delaying merge for origin volume %s since " "snapshot volume %s is still active.", display_lvname(lv), display_lvname(snapshot_lv)); } if (!lv_refresh_suspend_resume(lv)) return_0; /* * check if snapshot merge should be polled * - unfortunately: even though the dev_manager will clear * the lv's merge attributes if a merge is not possible; * it is clearing a different instance of the lv (as * retrieved with lv_from_lvid) * - fortunately: polldaemon will immediately shutdown if the * origin doesn't have a status with a snapshot percentage */ if (background_polling() && lv_is_merging_origin(lv) && lv_is_active_locally(lv)) lv_spawn_background_polling(cmd, lv); return 1; } int vg_refresh_visible(struct cmd_context *cmd, struct volume_group *vg) { struct lv_list *lvl; int r = 1; sigint_allow(); dm_list_iterate_items(lvl, &vg->lvs) { if (sigint_caught()) { r = 0; stack; break; } if (lv_is_visible(lvl->lv) && !lv_refresh(cmd, lvl->lv)) { r = 0; stack; } } sigint_restore(); return r; } void lv_spawn_background_polling(struct cmd_context *cmd, struct logical_volume *lv) { const char *pvname; const struct logical_volume *lv_mirr = NULL; if (lv_is_pvmove(lv)) lv_mirr = lv; else if (lv_is_locked(lv)) lv_mirr = find_pvmove_lv_in_lv(lv); if (lv_mirr && (pvname = get_pvmove_pvname_from_lv_mirr(lv_mirr))) { log_verbose("Spawning background pvmove process for %s.", pvname); pvmove_poll(cmd, pvname, lv_mirr->lvid.s, lv_mirr->vg->name, lv_mirr->name, 1); } if (lv_is_converting(lv) || lv_is_merging(lv)) { log_verbose("Spawning background lvconvert process for %s.", lv->name); lvconvert_poll(cmd, lv, 1); } } int get_activation_monitoring_mode(struct cmd_context *cmd, int *monitoring_mode) { *monitoring_mode = DEFAULT_DMEVENTD_MONITOR; if (arg_is_set(cmd, monitor_ARG) && (arg_is_set(cmd, ignoremonitoring_ARG) || arg_is_set(cmd, sysinit_ARG))) { log_error("--ignoremonitoring or --sysinit option not allowed with --monitor option."); return 0; } if (arg_is_set(cmd, monitor_ARG)) *monitoring_mode = arg_int_value(cmd, monitor_ARG, DEFAULT_DMEVENTD_MONITOR); else if (is_static() || arg_is_set(cmd, ignoremonitoring_ARG) || arg_is_set(cmd, sysinit_ARG) || !find_config_tree_bool(cmd, activation_monitoring_CFG, NULL)) *monitoring_mode = DMEVENTD_MONITOR_IGNORE; return 1; } /* * Read pool options from cmdline */ int get_pool_params(struct cmd_context *cmd, const struct segment_type *segtype, int *passed_args, uint64_t *pool_metadata_size, int *pool_metadata_spare, uint32_t *chunk_size, thin_discards_t *discards, int *zero) { *passed_args = 0; if (segtype_is_thin_pool(segtype) || segtype_is_thin(segtype)) { if (arg_is_set(cmd, zero_ARG)) { *passed_args |= PASS_ARG_ZERO; *zero = arg_int_value(cmd, zero_ARG, 1); log_very_verbose("%s pool zeroing.", *zero ? "Enabling" : "Disabling"); } if (arg_is_set(cmd, discards_ARG)) { *passed_args |= PASS_ARG_DISCARDS; *discards = (thin_discards_t) arg_uint_value(cmd, discards_ARG, 0); log_very_verbose("Setting pool discards to %s.", get_pool_discards_name(*discards)); } } if (arg_from_list_is_negative(cmd, "may not be negative", chunksize_ARG, pooldatasize_ARG, poolmetadatasize_ARG, -1)) return_0; if (arg_from_list_is_zero(cmd, "may not be zero", chunksize_ARG, pooldatasize_ARG, poolmetadatasize_ARG, -1)) return_0; if (arg_is_set(cmd, chunksize_ARG)) { *passed_args |= PASS_ARG_CHUNK_SIZE; *chunk_size = arg_uint_value(cmd, chunksize_ARG, 0); if (!validate_pool_chunk_size(cmd, segtype, *chunk_size)) return_0; log_very_verbose("Setting pool chunk size to %s.", display_size(cmd, *chunk_size)); } if (arg_is_set(cmd, poolmetadatasize_ARG)) { if (arg_sign_value(cmd, poolmetadatasize_ARG, SIGN_NONE) == SIGN_MINUS) { log_error("Negative pool metadata size is invalid."); return 0; } if (arg_is_set(cmd, poolmetadata_ARG)) { log_error("Please specify either metadata logical volume or its size."); return 0; } *passed_args |= PASS_ARG_POOL_METADATA_SIZE; *pool_metadata_size = arg_uint64_value(cmd, poolmetadatasize_ARG, UINT64_C(0)); } else if (arg_is_set(cmd, poolmetadata_ARG)) *passed_args |= PASS_ARG_POOL_METADATA_SIZE; /* fixed size */ /* TODO: default in lvm.conf ? */ *pool_metadata_spare = arg_int_value(cmd, poolmetadataspare_ARG, DEFAULT_POOL_METADATA_SPARE); return 1; } /* * Generic stripe parameter checks. */ static int _validate_stripe_params(struct cmd_context *cmd, const struct segment_type *segtype, uint32_t *stripes, uint32_t *stripe_size) { int stripe_size_required = segtype_supports_stripe_size(segtype); if (!stripe_size_required && *stripe_size) { log_print_unless_silent("Ignoring stripesize argument for %s devices.", segtype->name); *stripe_size = 0; } else if (*stripes == 1 && (segtype_is_striped_target(segtype) || segtype_is_mirror(segtype))) { stripe_size_required = 0; if (*stripe_size) { log_print_unless_silent("Ignoring stripesize argument with single stripe."); *stripe_size = 0; } } if (stripe_size_required) { if (!*stripe_size) { *stripe_size = find_config_tree_int(cmd, metadata_stripesize_CFG, NULL) * 2; log_print_unless_silent("Using default stripesize %s.", display_size(cmd, (uint64_t) *stripe_size)); } if (*stripe_size < STRIPE_SIZE_MIN || !is_power_of_2(*stripe_size)) { log_error("Invalid stripe size %s.", display_size(cmd, (uint64_t) *stripe_size)); return 0; } } if (*stripes < 1 || *stripes > MAX_STRIPES) { log_error("Number of stripes (%d) must be between %d and %d.", *stripes, 1, MAX_STRIPES); return 0; } return 1; } /* * The stripe size is limited by the size of a uint32_t, but since the * value given by the user is doubled, and the final result must be a * power of 2, we must divide UINT_MAX by four and add 1 (to round it * up to the power of 2) */ int get_stripe_params(struct cmd_context *cmd, const struct segment_type *segtype, uint32_t *stripes, uint32_t *stripe_size, unsigned *stripes_supplied, unsigned *stripe_size_supplied) { /* stripes_long_ARG takes precedence (for lvconvert) */ /* FIXME Cope with relative +/- changes for lvconvert. */ *stripes = arg_uint_value(cmd, arg_is_set(cmd, stripes_long_ARG) ? stripes_long_ARG : stripes_ARG, 1); *stripes_supplied = arg_is_set(cmd, stripes_long_ARG) ? : arg_is_set(cmd, stripes_ARG); *stripe_size = arg_uint_value(cmd, stripesize_ARG, 0); *stripe_size_supplied = arg_is_set(cmd, stripesize_ARG); if (*stripe_size) { if (arg_sign_value(cmd, stripesize_ARG, SIGN_NONE) == SIGN_MINUS) { log_error("Negative stripesize is invalid."); return 0; } if (arg_uint64_value(cmd, stripesize_ARG, 0) > STRIPE_SIZE_LIMIT * 2) { log_error("Stripe size cannot be larger than %s.", display_size(cmd, (uint64_t) STRIPE_SIZE_LIMIT)); return 0; } } return _validate_stripe_params(cmd, segtype, stripes, stripe_size); } static int _validate_cachepool_params(const char *name, const struct dm_config_tree *settings) { return 1; } int get_cache_params(struct cmd_context *cmd, cache_mode_t *cache_mode, const char **name, struct dm_config_tree **settings) { const char *str; struct arg_value_group_list *group; struct dm_config_tree *result = NULL, *prev = NULL, *current = NULL; struct dm_config_node *cn; int ok = 0; if (cache_mode) *cache_mode = (cache_mode_t) arg_uint_value(cmd, cachemode_ARG, CACHE_MODE_UNDEFINED); if (name) *name = arg_str_value(cmd, cachepolicy_ARG, NULL); if (!settings) return 1; dm_list_iterate_items(group, &cmd->arg_value_groups) { if (!grouped_arg_is_set(group->arg_values, cachesettings_ARG)) continue; if (!(current = dm_config_create())) goto_out; if (prev) current->cascade = prev; prev = current; if (!(str = grouped_arg_str_value(group->arg_values, cachesettings_ARG, NULL))) goto_out; if (!dm_config_parse_without_dup_node_check(current, str, str + strlen(str))) goto_out; } if (!current) return 1; if (!(result = dm_config_flatten(current))) goto_out; if (result->root) { if (!(cn = dm_config_create_node(result, "policy_settings"))) goto_out; cn->child = result->root; result->root = cn; } if (!_validate_cachepool_params(*name, result)) goto_out; ok = 1; out: if (!ok && result) { dm_config_destroy(result); result = NULL; } while (prev) { current = prev->cascade; dm_config_destroy(prev); prev = current; } *settings = result; return ok; } /* FIXME move to lib */ static int _pv_change_tag(struct physical_volume *pv, const char *tag, int addtag) { if (addtag) { if (!str_list_add(pv->fmt->cmd->mem, &pv->tags, tag)) { log_error("Failed to add tag %s to physical volume %s.", tag, pv_dev_name(pv)); return 0; } } else str_list_del(&pv->tags, tag); return 1; } /* Set exactly one of VG, LV or PV */ int change_tag(struct cmd_context *cmd, struct volume_group *vg, struct logical_volume *lv, struct physical_volume *pv, int arg) { const char *tag; struct arg_value_group_list *current_group; dm_list_iterate_items(current_group, &cmd->arg_value_groups) { if (!grouped_arg_is_set(current_group->arg_values, arg)) continue; if (!(tag = grouped_arg_str_value(current_group->arg_values, arg, NULL))) { log_error("Failed to get tag."); return 0; } if (vg && !vg_change_tag(vg, tag, arg == addtag_ARG)) return_0; else if (lv && !lv_change_tag(lv, tag, arg == addtag_ARG)) return_0; else if (pv && !_pv_change_tag(pv, tag, arg == addtag_ARG)) return_0; } return 1; } int process_each_label(struct cmd_context *cmd, int argc, char **argv, struct processing_handle *handle, process_single_label_fn_t process_single_label) { log_report_t saved_log_report_state = log_get_report_state(); struct label *label; struct dev_iter *iter; struct device *dev; int ret_max = ECMD_PROCESSED; int ret; int opt = 0; log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_LABEL); if (argc) { for (; opt < argc; opt++) { if (!(dev = dev_cache_get(argv[opt], cmd->full_filter))) { log_error("Failed to find device " "\"%s\".", argv[opt]); ret_max = ECMD_FAILED; continue; } log_set_report_object_name_and_id(dev_name(dev), NULL); if (!label_read(dev, &label, 0)) { log_error("No physical volume label read from %s.", argv[opt]); ret_max = ECMD_FAILED; continue; } ret = process_single_label(cmd, label, handle); report_log_ret_code(ret); if (ret > ret_max) ret_max = ret; log_set_report_object_name_and_id(NULL, NULL); if (sigint_caught()) break; } goto out; } if (!(iter = dev_iter_create(cmd->full_filter, 1))) { log_error("dev_iter creation failed."); ret_max = ECMD_FAILED; goto out; } while ((dev = dev_iter_get(iter))) { if (!label_read(dev, &label, 0)) continue; log_set_report_object_name_and_id(dev_name(label->dev), NULL); ret = process_single_label(cmd, label, handle); report_log_ret_code(ret); if (ret > ret_max) ret_max = ret; log_set_report_object_name_and_id(NULL, NULL); if (sigint_caught()) break; } dev_iter_destroy(iter); out: log_restore_report_state(saved_log_report_state); return ret_max; } /* * Parse persistent major minor parameters. * * --persistent is unspecified => state is deduced * from presence of options --minor or --major. * * -Mn => --minor or --major not allowed. * * -My => --minor is required (and also --major on <=2.4) */ int get_and_validate_major_minor(const struct cmd_context *cmd, const struct format_type *fmt, int32_t *major, int32_t *minor) { if (arg_count(cmd, minor_ARG) > 1) { log_error("Option --minor may not be repeated."); return 0; } if (arg_count(cmd, major_ARG) > 1) { log_error("Option -j|--major may not be repeated."); return 0; } /* Check with default 'y' */ if (!arg_int_value(cmd, persistent_ARG, 1)) { /* -Mn */ if (arg_is_set(cmd, minor_ARG) || arg_is_set(cmd, major_ARG)) { log_error("Options --major and --minor are incompatible with -Mn."); return 0; } *major = *minor = -1; return 1; } /* -1 cannot be entered as an argument for --major, --minor */ *major = arg_int_value(cmd, major_ARG, -1); *minor = arg_int_value(cmd, minor_ARG, -1); if (arg_is_set(cmd, persistent_ARG)) { /* -My */ if (*minor == -1) { log_error("Please specify minor number with --minor when using -My."); return 0; } } if (!strncmp(cmd->kernel_vsn, "2.4.", 4)) { /* Major is required for 2.4 */ if (arg_is_set(cmd, persistent_ARG) && *major < 0) { log_error("Please specify major number with --major when using -My."); return 0; } } else { if (*major != -1) { log_warn("WARNING: Ignoring supplied major number %d - " "kernel assigns major numbers dynamically. " "Using major number %d instead.", *major, cmd->dev_types->device_mapper_major); } /* Stay with dynamic major:minor if minor is not specified. */ *major = (*minor == -1) ? -1 : cmd->dev_types->device_mapper_major; } if ((*minor != -1) && !validate_major_minor(cmd, fmt, *major, *minor)) return_0; return 1; } /* * Validate lvname parameter * * If it contains vgname, it is extracted from lvname. * If there is passed vgname, it is compared whether its the same name. */ int validate_lvname_param(struct cmd_context *cmd, const char **vg_name, const char **lv_name) { const char *vgname; const char *lvname; if (!lv_name || !*lv_name) return 1; /* NULL lvname is ok */ /* If contains VG name, extract it. */ if (strchr(*lv_name, (int) '/')) { if (!(vgname = _extract_vgname(cmd, *lv_name, &lvname))) return_0; if (!*vg_name) *vg_name = vgname; else if (strcmp(vgname, *vg_name)) { log_error("Please use a single volume group name " "(\"%s\" or \"%s\").", vgname, *vg_name); return 0; } *lv_name = lvname; } if (!validate_name(*lv_name)) { log_error("Logical volume name \"%s\" is invalid.", *lv_name); return 0; } return 1; } /* * Validate lvname parameter * This name must follow restriction rules on prefixes and suffixes. * * If it contains vgname, it is extracted from lvname. * If there is passed vgname, it is compared whether its the same name. */ int validate_restricted_lvname_param(struct cmd_context *cmd, const char **vg_name, const char **lv_name) { if (!validate_lvname_param(cmd, vg_name, lv_name)) return_0; if (lv_name && *lv_name && !apply_lvname_restrictions(*lv_name)) return_0; return 1; } /* * Extract list of VG names and list of tags from command line arguments. */ static int _get_arg_vgnames(struct cmd_context *cmd, int argc, char **argv, const char *one_vgname, struct dm_list *use_vgnames, struct dm_list *arg_vgnames, struct dm_list *arg_tags) { int opt = 0; int ret_max = ECMD_PROCESSED; const char *vg_name; if (one_vgname) { if (!str_list_add(cmd->mem, arg_vgnames, dm_pool_strdup(cmd->mem, one_vgname))) { log_error("strlist allocation failed."); return ECMD_FAILED; } return ret_max; } if (use_vgnames && !dm_list_empty(use_vgnames)) { dm_list_splice(arg_vgnames, use_vgnames); return ret_max; } for (; opt < argc; opt++) { vg_name = argv[opt]; if (*vg_name == '@') { if (!validate_tag(vg_name + 1)) { log_error("Skipping invalid tag: %s", vg_name); if (ret_max < EINVALID_CMD_LINE) ret_max = EINVALID_CMD_LINE; continue; } if (!str_list_add(cmd->mem, arg_tags, dm_pool_strdup(cmd->mem, vg_name + 1))) { log_error("strlist allocation failed."); return ECMD_FAILED; } continue; } vg_name = skip_dev_dir(cmd, vg_name, NULL); if (strchr(vg_name, '/')) { log_error("Invalid volume group name %s.", vg_name); if (ret_max < EINVALID_CMD_LINE) ret_max = EINVALID_CMD_LINE; continue; } if (!str_list_add(cmd->mem, arg_vgnames, dm_pool_strdup(cmd->mem, vg_name))) { log_error("strlist allocation failed."); return ECMD_FAILED; } } return ret_max; } struct processing_handle *init_processing_handle(struct cmd_context *cmd, struct processing_handle *parent_handle) { struct processing_handle *handle; if (!(handle = dm_pool_zalloc(cmd->mem, sizeof(struct processing_handle)))) { log_error("_init_processing_handle: failed to allocate memory for processing handle"); return NULL; } handle->parent = parent_handle; /* * For any reporting tool, the internal_report_for_select is reset to 0 * automatically because the internal reporting/selection is simply not * needed - the reporting/selection is already a part of the code path * used there. * * *The internal report for select is only needed for non-reporting tools!* */ handle->internal_report_for_select = arg_is_set(cmd, select_ARG); handle->include_historical_lvs = cmd->include_historical_lvs; if (!parent_handle && !cmd->cmd_report.report_group) { if (!report_format_init(cmd)) { dm_pool_free(cmd->mem, handle); return NULL; } } else cmd->cmd_report.saved_log_report_state = log_get_report_state(); log_set_report_context(LOG_REPORT_CONTEXT_PROCESSING); return handle; } int init_selection_handle(struct cmd_context *cmd, struct processing_handle *handle, report_type_t initial_report_type) { struct selection_handle *sh; const char *selection; if (!(sh = dm_pool_zalloc(cmd->mem, sizeof(struct selection_handle)))) { log_error("_init_selection_handle: failed to allocate memory for selection handle"); return 0; } if (!report_get_single_selection(cmd, initial_report_type, &selection)) return_0; sh->report_type = initial_report_type; if (!(sh->selection_rh = report_init_for_selection(cmd, &sh->report_type, selection))) { dm_pool_free(cmd->mem, sh); return_0; } handle->selection_handle = sh; return 1; } void destroy_processing_handle(struct cmd_context *cmd, struct processing_handle *handle) { if (handle) { if (handle->selection_handle && handle->selection_handle->selection_rh) dm_report_free(handle->selection_handle->selection_rh); log_restore_report_state(cmd->cmd_report.saved_log_report_state); if (!cmd->is_interactive) { if (!dm_report_group_destroy(cmd->cmd_report.report_group)) stack; cmd->cmd_report.report_group = NULL; if (cmd->cmd_report.log_rh) { dm_report_free(cmd->cmd_report.log_rh); cmd->cmd_report.log_rh = NULL; } } /* * TODO: think about better alternatives: * handle mempool, dm_alloc for handle memory... */ memset(handle, 0, sizeof(*handle)); } } int select_match_vg(struct cmd_context *cmd, struct processing_handle *handle, struct volume_group *vg) { int r; if (!handle->internal_report_for_select) return 1; handle->selection_handle->orig_report_type = VGS; if (!(r = report_for_selection(cmd, handle, NULL, vg, NULL))) log_error("Selection failed for VG %s.", vg->name); handle->selection_handle->orig_report_type = 0; return r; } int select_match_lv(struct cmd_context *cmd, struct processing_handle *handle, struct volume_group *vg, struct logical_volume *lv) { int r; if (!handle->internal_report_for_select) return 1; handle->selection_handle->orig_report_type = LVS; if (!(r = report_for_selection(cmd, handle, NULL, vg, lv))) log_error("Selection failed for LV %s.", lv->name); handle->selection_handle->orig_report_type = 0; return r; } int select_match_pv(struct cmd_context *cmd, struct processing_handle *handle, struct volume_group *vg, struct physical_volume *pv) { int r; if (!handle->internal_report_for_select) return 1; handle->selection_handle->orig_report_type = PVS; if (!(r = report_for_selection(cmd, handle, pv, vg, NULL))) log_error("Selection failed for PV %s.", dev_name(pv->dev)); handle->selection_handle->orig_report_type = 0; return r; } static int _select_matches(struct processing_handle *handle) { if (!handle->internal_report_for_select) return 1; return handle->selection_handle->selected; } static int _process_vgnameid_list(struct cmd_context *cmd, uint32_t read_flags, struct dm_list *vgnameids_to_process, struct dm_list *arg_vgnames, struct dm_list *arg_tags, struct processing_handle *handle, process_single_vg_fn_t process_single_vg) { log_report_t saved_log_report_state = log_get_report_state(); char uuid[64] __attribute__((aligned(8))); struct volume_group *vg; struct vgnameid_list *vgnl; const char *vg_name; const char *vg_uuid; uint32_t lockd_state = 0; int whole_selected = 0; int ret_max = ECMD_PROCESSED; int ret; int skip; int notfound; int process_all = 0; int already_locked; int do_report_ret_code = 1; log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_VG); /* * If no VG names or tags were supplied, then process all VGs. */ if (dm_list_empty(arg_vgnames) && dm_list_empty(arg_tags)) process_all = 1; /* * FIXME If one_vgname, only proceed if exactly one VG matches tags or selection. */ dm_list_iterate_items(vgnl, vgnameids_to_process) { vg_name = vgnl->vg_name; vg_uuid = vgnl->vgid; skip = 0; notfound = 0; uuid[0] = '\0'; if (is_orphan_vg(vg_name)) { log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_ORPHAN); log_set_report_object_name_and_id(vg_name + sizeof(VG_ORPHANS), uuid); } else { if (vg_uuid && !id_write_format((const struct id*)vg_uuid, uuid, sizeof(uuid))) stack; log_set_report_object_name_and_id(vg_name, uuid); } if (sigint_caught()) { ret_max = ECMD_FAILED; goto_out; } log_very_verbose("Processing VG %s %s", vg_name, uuid); if (!lockd_vg(cmd, vg_name, NULL, 0, &lockd_state)) { ret_max = ECMD_FAILED; report_log_ret_code(ret_max); continue; } already_locked = lvmcache_vgname_is_locked(vg_name); vg = vg_read(cmd, vg_name, vg_uuid, read_flags, lockd_state); if (_ignore_vg(vg, vg_name, arg_vgnames, read_flags, &skip, ¬found)) { stack; ret_max = ECMD_FAILED; report_log_ret_code(ret_max); goto endvg; } if (skip || notfound) goto endvg; /* Process this VG? */ if ((process_all || (!dm_list_empty(arg_vgnames) && str_list_match_item(arg_vgnames, vg_name)) || (!dm_list_empty(arg_tags) && str_list_match_list(arg_tags, &vg->tags, NULL))) && select_match_vg(cmd, handle, vg) && _select_matches(handle)) { log_very_verbose("Process single VG %s", vg_name); ret = process_single_vg(cmd, vg_name, vg, handle); _update_selection_result(handle, &whole_selected); if (ret != ECMD_PROCESSED) stack; report_log_ret_code(ret); if (ret > ret_max) ret_max = ret; } if (!vg_read_error(vg) && !already_locked) unlock_vg(cmd, vg, vg_name); endvg: release_vg(vg); if (!lockd_vg(cmd, vg_name, "un", 0, &lockd_state)) stack; log_set_report_object_name_and_id(NULL, NULL); } /* the VG is selected if at least one LV is selected */ _set_final_selection_result(handle, whole_selected); do_report_ret_code = 0; out: if (do_report_ret_code) report_log_ret_code(ret_max); log_restore_report_state(saved_log_report_state); return ret_max; } /* * Check if a command line VG name is ambiguous, i.e. there are multiple VGs on * the system that have the given name. If *one* VG with the given name is * local and the rest are foreign, then use the local VG (removing foreign VGs * with the same name from the vgnameids_on_system list). If multiple VGs with * the given name are local, we don't know which VG is intended, so remove the * ambiguous name from the list of args. */ static int _resolve_duplicate_vgnames(struct cmd_context *cmd, struct dm_list *arg_vgnames, struct dm_list *vgnameids_on_system) { struct dm_str_list *sl, *sl2; struct vgnameid_list *vgnl, *vgnl2; char uuid[64] __attribute__((aligned(8))); int found; int ret = ECMD_PROCESSED; dm_list_iterate_items_safe(sl, sl2, arg_vgnames) { found = 0; dm_list_iterate_items(vgnl, vgnameids_on_system) { if (strcmp(sl->str, vgnl->vg_name)) continue; found++; } if (found < 2) continue; /* * More than one VG match the given name. * If only one is local, use that one. */ found = 0; dm_list_iterate_items_safe(vgnl, vgnl2, vgnameids_on_system) { if (strcmp(sl->str, vgnl->vg_name)) continue; /* * Without lvmetad, a label scan has already populated * lvmcache vginfo with this information. * With lvmetad, this function does vg_lookup on this * name/vgid and checks system_id in the metadata. */ if (lvmcache_vg_is_foreign(cmd, vgnl->vg_name, vgnl->vgid)) { if (!id_write_format((const struct id*)vgnl->vgid, uuid, sizeof(uuid))) stack; log_warn("WARNING: Ignoring foreign VG with matching name %s UUID %s.", vgnl->vg_name, uuid); dm_list_del(&vgnl->list); } else { found++; } } if (found < 2) continue; /* * More than one VG with this name is local so the intended VG * is unknown. */ log_error("Multiple VGs found with the same name: skipping %s", sl->str); log_error("Use --select vg_uuid= in place of the VG name."); dm_list_del(&sl->list); ret = ECMD_FAILED; } return ret; } /* * For each arg_vgname, move the corresponding entry from * vgnameids_on_system to vgnameids_to_process. If an * item in arg_vgnames doesn't exist in vgnameids_on_system, * then add a new entry for it to vgnameids_to_process. */ static void _choose_vgs_to_process(struct cmd_context *cmd, struct dm_list *arg_vgnames, struct dm_list *vgnameids_on_system, struct dm_list *vgnameids_to_process) { char uuid[64] __attribute__((aligned(8))); struct dm_str_list *sl, *sl2; struct vgnameid_list *vgnl, *vgnl2; struct id id; int arg_is_uuid = 0; int found; dm_list_iterate_items_safe(sl, sl2, arg_vgnames) { found = 0; dm_list_iterate_items_safe(vgnl, vgnl2, vgnameids_on_system) { if (strcmp(sl->str, vgnl->vg_name)) continue; dm_list_del(&vgnl->list); dm_list_add(vgnameids_to_process, &vgnl->list); found = 1; break; } /* * If the VG name arg looks like a UUID, then check if it * matches the UUID of a VG. (--select should generally * be used to select a VG by uuid instead.) */ if (!found && (cmd->cname->flags & ALLOW_UUID_AS_NAME)) arg_is_uuid = id_read_format_try(&id, sl->str); if (!found && arg_is_uuid) { dm_list_iterate_items_safe(vgnl, vgnl2, vgnameids_on_system) { if (!(id_write_format((const struct id*)vgnl->vgid, uuid, sizeof(uuid)))) continue; if (strcmp(sl->str, uuid)) continue; log_print("Processing VG %s because of matching UUID %s", vgnl->vg_name, uuid); dm_list_del(&vgnl->list); dm_list_add(vgnameids_to_process, &vgnl->list); /* Make the arg_vgnames entry use the actual VG name. */ sl->str = dm_pool_strdup(cmd->mem, vgnl->vg_name); found = 1; break; } } /* * If the name arg was not found in the list of all VGs, then * it probably doesn't exist, but we want the "VG not found" * failure to be handled by the existing vg_read() code for * that error. So, create an entry with just the VG name so * that the processing loop will attempt to process it and use * the vg_read() error path. */ if (!found) { log_verbose("VG name on command line not found in list of VGs: %s", sl->str); if (!(vgnl = dm_pool_alloc(cmd->mem, sizeof(*vgnl)))) continue; vgnl->vgid = NULL; if (!(vgnl->vg_name = dm_pool_strdup(cmd->mem, sl->str))) continue; dm_list_add(vgnameids_to_process, &vgnl->list); } } } /* * Call process_single_vg() for each VG selected by the command line arguments. * If one_vgname is set, process only that VG and ignore argc/argv (which should be 0/NULL). * If one_vgname is not set, get VG names to process from argc/argv. */ int process_each_vg(struct cmd_context *cmd, int argc, char **argv, const char *one_vgname, struct dm_list *use_vgnames, uint32_t read_flags, int include_internal, struct processing_handle *handle, process_single_vg_fn_t process_single_vg) { log_report_t saved_log_report_state = log_get_report_state(); int handle_supplied = handle != NULL; struct dm_list arg_tags; /* str_list */ struct dm_list arg_vgnames; /* str_list */ struct dm_list vgnameids_on_system; /* vgnameid_list */ struct dm_list vgnameids_to_process; /* vgnameid_list */ int enable_all_vgs = (cmd->cname->flags & ALL_VGS_IS_DEFAULT); int process_all_vgs_on_system = 0; int ret_max = ECMD_PROCESSED; int ret; log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_VG); log_debug("Processing each VG"); /* Disable error in vg_read so we can print it from ignore_vg. */ cmd->vg_read_print_access_error = 0; dm_list_init(&arg_tags); dm_list_init(&arg_vgnames); dm_list_init(&vgnameids_on_system); dm_list_init(&vgnameids_to_process); /* * Find any VGs or tags explicitly provided on the command line. */ if ((ret = _get_arg_vgnames(cmd, argc, argv, one_vgname, use_vgnames, &arg_vgnames, &arg_tags)) != ECMD_PROCESSED) { ret_max = ret; goto_out; } /* * Process all VGs on the system when: * . tags are specified and all VGs need to be read to * look for matching tags. * . no VG names are specified and the command defaults * to processing all VGs when none are specified. */ if ((dm_list_empty(&arg_vgnames) && enable_all_vgs) || !dm_list_empty(&arg_tags)) process_all_vgs_on_system = 1; /* * Needed for a current listing of the global VG namespace. */ if (process_all_vgs_on_system && !lockd_gl(cmd, "sh", 0)) { ret_max = ECMD_FAILED; goto_out; } /* * First rescan for available devices, then force the next * label scan to be done. get_vgnameids() will scan labels * (when not using lvmetad). */ if (cmd->cname->flags & REQUIRES_FULL_LABEL_SCAN) { dev_cache_full_scan(cmd->full_filter); lvmcache_force_next_label_scan(); } /* * A list of all VGs on the system is needed when: * . processing all VGs on the system * . A VG name is specified which may refer to one * of multiple VGs on the system with that name. */ log_debug("Get list of VGs on system"); if (!get_vgnameids(cmd, &vgnameids_on_system, NULL, include_internal)) { ret_max = ECMD_FAILED; goto_out; } if (!dm_list_empty(&arg_vgnames)) { /* This may remove entries from arg_vgnames or vgnameids_on_system. */ ret = _resolve_duplicate_vgnames(cmd, &arg_vgnames, &vgnameids_on_system); if (ret > ret_max) ret_max = ret; if (dm_list_empty(&arg_vgnames) && dm_list_empty(&arg_tags)) { ret_max = ECMD_FAILED; goto out; } } if (dm_list_empty(&arg_vgnames) && dm_list_empty(&vgnameids_on_system)) { /* FIXME Should be log_print, but suppressed for reporting cmds */ log_verbose("No volume groups found."); ret_max = ECMD_PROCESSED; goto out; } if (dm_list_empty(&arg_vgnames)) read_flags |= READ_OK_NOTFOUND; /* * When processing all VGs, vgnameids_on_system simply becomes * vgnameids_to_process. * When processing only specified VGs, then for each item in * arg_vgnames, move the corresponding entry from * vgnameids_on_system to vgnameids_to_process. */ if (process_all_vgs_on_system) dm_list_splice(&vgnameids_to_process, &vgnameids_on_system); else _choose_vgs_to_process(cmd, &arg_vgnames, &vgnameids_on_system, &vgnameids_to_process); if (!handle && !(handle = init_processing_handle(cmd, NULL))) { ret_max = ECMD_FAILED; goto_out; } if (handle->internal_report_for_select && !handle->selection_handle && !init_selection_handle(cmd, handle, VGS)) { ret_max = ECMD_FAILED; goto_out; } ret = _process_vgnameid_list(cmd, read_flags, &vgnameids_to_process, &arg_vgnames, &arg_tags, handle, process_single_vg); if (ret > ret_max) ret_max = ret; out: if (!handle_supplied) destroy_processing_handle(cmd, handle); log_restore_report_state(saved_log_report_state); return ret_max; } static struct dm_str_list *_str_list_match_item_with_prefix(const struct dm_list *sll, const char *prefix, const char *str) { struct dm_str_list *sl; size_t prefix_len = strlen(prefix); dm_list_iterate_items(sl, sll) { if (!strncmp(prefix, sl->str, prefix_len) && !strcmp(sl->str + prefix_len, str)) return sl; } return NULL; } /* * Dummy LV, segment type and segment to represent all historical LVs. */ static struct logical_volume _historical_lv = { .name = "", .major = -1, .minor = -1, .snapshot_segs = DM_LIST_HEAD_INIT(_historical_lv.snapshot_segs), .segments = DM_LIST_HEAD_INIT(_historical_lv.segments), .tags = DM_LIST_HEAD_INIT(_historical_lv.tags), .segs_using_this_lv = DM_LIST_HEAD_INIT(_historical_lv.segs_using_this_lv), .indirect_glvs = DM_LIST_HEAD_INIT(_historical_lv.indirect_glvs), .hostname = "", }; static struct segment_type _historical_segment_type = { .name = "historical", .flags = SEG_VIRTUAL | SEG_CANNOT_BE_ZEROED, }; static struct lv_segment _historical_lv_segment = { .lv = &_historical_lv, .segtype = &_historical_segment_type, .len = 0, .tags = DM_LIST_HEAD_INIT(_historical_lv_segment.tags), .origin_list = DM_LIST_HEAD_INIT(_historical_lv_segment.origin_list), }; int opt_in_list_is_set(struct cmd_context *cmd, int *opts, int count, int *match_count, int *unmatch_count) { int match = 0; int unmatch = 0; int i; for (i = 0; i < count; i++) { if (arg_is_set(cmd, opts[i])) match++; else unmatch++; } if (match_count) *match_count = match; if (unmatch_count) *unmatch_count = unmatch; return match ? 1 : 0; } void opt_array_to_str(struct cmd_context *cmd, int *opts, int count, char *buf, int len) { int pos = 0; int ret; int i; for (i = 0; i < count; i++) { ret = snprintf(buf + pos, len - pos, "%s ", arg_long_option_name(opts[i])); if (ret >= len - pos) break; pos += ret; } buf[len - 1] = '\0'; } static void lvp_bits_to_str(uint64_t bits, char *buf, int len) { struct lv_prop *prop; int lvp_enum; int pos = 0; int ret; for (lvp_enum = 0; lvp_enum < LVP_COUNT; lvp_enum++) { if (!(prop = get_lv_prop(lvp_enum))) continue; if (lvp_bit_is_set(bits, lvp_enum)) { ret = snprintf(buf + pos, len - pos, "%s ", prop->name); if (ret >= len - pos) break; pos += ret; } } buf[len - 1] = '\0'; } static void lvt_bits_to_str(uint64_t bits, char *buf, int len) { struct lv_type *type; int lvt_enum; int pos = 0; int ret; for (lvt_enum = 0; lvt_enum < LVT_COUNT; lvt_enum++) { if (!(type = get_lv_type(lvt_enum))) continue; if (lvt_bit_is_set(bits, lvt_enum)) { ret = snprintf(buf + pos, len - pos, "%s ", type->name); if (ret >= len - pos) break; pos += ret; } } buf[len - 1] = '\0'; } /* * This is the lv_prop function pointer used for lv_is_foo() #defines. * Alternatively, lv_is_foo() could all be turned into functions. */ static int _lv_is_prop(struct cmd_context *cmd, struct logical_volume *lv, int lvp_enum) { switch (lvp_enum) { case is_locked_LVP: return lv_is_locked(lv); case is_partial_LVP: return lv_is_partial(lv); case is_virtual_LVP: return lv_is_virtual(lv); case is_merging_LVP: return lv_is_merging(lv); case is_merging_origin_LVP: return lv_is_merging_origin(lv); case is_converting_LVP: return lv_is_converting(lv); case is_external_origin_LVP: return lv_is_external_origin(lv); case is_virtual_origin_LVP: return lv_is_virtual_origin(lv); case is_not_synced_LVP: return lv_is_not_synced(lv); case is_pending_delete_LVP: return lv_is_pending_delete(lv); case is_error_when_full_LVP: return lv_is_error_when_full(lv); case is_pvmove_LVP: return lv_is_pvmove(lv); case is_removed_LVP: return lv_is_removed(lv); case is_vg_writable_LVP: return (lv->vg->status & LVM_WRITE) ? 1 : 0; case is_thinpool_data_LVP: return lv_is_thin_pool_data(lv); case is_thinpool_metadata_LVP: return lv_is_thin_pool_metadata(lv); case is_cachepool_data_LVP: return lv_is_cache_pool_data(lv); case is_cachepool_metadata_LVP: return lv_is_cache_pool_metadata(lv); case is_mirror_image_LVP: return lv_is_mirror_image(lv); case is_mirror_log_LVP: return lv_is_mirror_log(lv); case is_raid_image_LVP: return lv_is_raid_image(lv); case is_raid_metadata_LVP: return lv_is_raid_metadata(lv); case is_origin_LVP: /* use lv_is_thick_origin */ return lv_is_origin(lv); case is_thick_origin_LVP: return lv_is_thick_origin(lv); case is_thick_snapshot_LVP: return lv_is_thick_snapshot(lv); case is_thin_origin_LVP: return lv_is_thin_origin(lv, NULL); case is_thin_snapshot_LVP: return lv_is_thin_snapshot(lv); case is_cache_origin_LVP: return lv_is_cache_origin(lv); case is_merging_cow_LVP: return lv_is_merging_cow(lv); case is_cow_covering_origin_LVP: return lv_is_cow_covering_origin(lv); case is_visible_LVP: return lv_is_visible(lv); case is_historical_LVP: return lv_is_historical(lv); case is_raid_with_tracking_LVP: return lv_is_raid_with_tracking(lv); default: log_error(INTERNAL_ERROR "unknown lv property value lvp_enum %d", lvp_enum); } return 0; } /* * Check if an LV matches a given LV type enum. */ static int _lv_is_type(struct cmd_context *cmd, struct logical_volume *lv, int lvt_enum) { struct lv_segment *seg = first_seg(lv); switch (lvt_enum) { case striped_LVT: return seg_is_striped(seg) && !lv_is_cow(lv); case linear_LVT: return seg_is_linear(seg) && !lv_is_cow(lv); case snapshot_LVT: return lv_is_cow(lv); case thin_LVT: return lv_is_thin_volume(lv); case thinpool_LVT: return lv_is_thin_pool(lv); case cache_LVT: return lv_is_cache(lv); case cachepool_LVT: return lv_is_cache_pool(lv); case mirror_LVT: return lv_is_mirror(lv); case raid_LVT: return lv_is_raid(lv); case raid0_LVT: return seg_is_any_raid0(seg); case raid1_LVT: return seg_is_raid1(seg); case raid4_LVT: return seg_is_raid4(seg); case raid5_LVT: return seg_is_any_raid5(seg); case raid6_LVT: return seg_is_any_raid6(seg); case raid10_LVT: return seg_is_raid10(seg); case error_LVT: return !strcmp(seg->segtype->name, SEG_TYPE_NAME_ERROR); case zero_LVT: return !strcmp(seg->segtype->name, SEG_TYPE_NAME_ZERO); default: log_error(INTERNAL_ERROR "unknown lv type value lvt_enum %d", lvt_enum); } return 0; } int get_lvt_enum(struct logical_volume *lv) { struct lv_segment *seg = first_seg(lv); /* * The order these are checked is important, because a snapshot LV has * a linear seg type. */ if (lv_is_cow(lv)) return snapshot_LVT; if (seg_is_linear(seg)) return linear_LVT; if (seg_is_striped(seg)) return striped_LVT; if (lv_is_thin_volume(lv)) return thin_LVT; if (lv_is_thin_pool(lv)) return thinpool_LVT; if (lv_is_cache(lv)) return cache_LVT; if (lv_is_cache_pool(lv)) return cachepool_LVT; if (lv_is_mirror(lv)) return mirror_LVT; if (lv_is_raid(lv)) return raid_LVT; if (seg_is_any_raid0(seg)) return raid0_LVT; if (seg_is_raid1(seg)) return raid1_LVT; if (seg_is_raid4(seg)) return raid4_LVT; if (seg_is_any_raid5(seg)) return raid5_LVT; if (seg_is_any_raid6(seg)) return raid6_LVT; if (seg_is_raid10(seg)) return raid10_LVT; if (!strcmp(seg->segtype->name, SEG_TYPE_NAME_ERROR)) return error_LVT; if (!strcmp(seg->segtype->name, SEG_TYPE_NAME_ZERO)) return zero_LVT; return 0; } /* * Call lv_is_ for each _LVT bit set in lvt_bits. * If lv matches one of the specified lv types, then return 1. */ static int _lv_types_match(struct cmd_context *cmd, struct logical_volume *lv, uint64_t lvt_bits, uint64_t *match_bits, uint64_t *unmatch_bits) { struct lv_type *type; int lvt_enum; int found_a_match = 0; int match; if (match_bits) *match_bits = 0; if (unmatch_bits) *unmatch_bits = 0; for (lvt_enum = 1; lvt_enum < LVT_COUNT; lvt_enum++) { if (!lvt_bit_is_set(lvt_bits, lvt_enum)) continue; if (!(type = get_lv_type(lvt_enum))) continue; /* * All types are currently handled by _lv_is_type() * because lv_is_type() are #defines and not exposed * in tools.h */ if (!type->fn) match = _lv_is_type(cmd, lv, lvt_enum); else match = type->fn(cmd, lv); if (match) found_a_match = 1; if (match_bits && match) *match_bits |= lvt_enum_to_bit(lvt_enum); if (unmatch_bits && !match) *unmatch_bits |= lvt_enum_to_bit(lvt_enum); } return found_a_match; } /* * Call lv_is_ for each _LVP bit set in lvp_bits. * If lv matches all of the specified lv properties, then return 1. */ static int _lv_props_match(struct cmd_context *cmd, struct logical_volume *lv, uint64_t lvp_bits, uint64_t *match_bits, uint64_t *unmatch_bits) { struct lv_prop *prop; int lvp_enum; int found_a_mismatch = 0; int match; if (match_bits) *match_bits = 0; if (unmatch_bits) *unmatch_bits = 0; for (lvp_enum = 1; lvp_enum < LVP_COUNT; lvp_enum++) { if (!lvp_bit_is_set(lvp_bits, lvp_enum)) continue; if (!(prop = get_lv_prop(lvp_enum))) continue; if (!prop->fn) match = _lv_is_prop(cmd, lv, lvp_enum); else match = prop->fn(cmd, lv); if (!match) found_a_mismatch = 1; if (match_bits && match) *match_bits |= lvp_enum_to_bit(lvp_enum); if (unmatch_bits && !match) *unmatch_bits |= lvp_enum_to_bit(lvp_enum); } return !found_a_mismatch; } static int _check_lv_types(struct cmd_context *cmd, struct logical_volume *lv, int pos) { int ret = 1; if (!pos) return 1; if (!cmd->command->required_pos_args[pos-1].def.lvt_bits) return 1; if (!val_bit_is_set(cmd->command->required_pos_args[pos-1].def.val_bits, lv_VAL)) { log_error(INTERNAL_ERROR "Command %d:%s arg position %d does not permit an LV (%llx)", cmd->command->command_index, cmd->command->command_id, pos, (unsigned long long)cmd->command->required_pos_args[pos-1].def.val_bits); return 0; } ret = _lv_types_match(cmd, lv, cmd->command->required_pos_args[pos-1].def.lvt_bits, NULL, NULL); if (!ret) { int lvt_enum = get_lvt_enum(lv); struct lv_type *type = get_lv_type(lvt_enum); log_warn("Operation on LV %s which has invalid type %s.", display_lvname(lv), type ? type->name : "unknown"); } return ret; } /* Check if LV passes each rule specified in command definition. */ static int _check_lv_rules(struct cmd_context *cmd, struct logical_volume *lv) { char buf[64]; struct cmd_rule *rule; struct lv_type *lvtype = NULL; uint64_t lv_props_match_bits, lv_props_unmatch_bits; uint64_t lv_types_match_bits, lv_types_unmatch_bits; int opts_match_count, opts_unmatch_count; int lvt_enum; int ret = 1; int i; lvt_enum = get_lvt_enum(lv); if (lvt_enum) lvtype = get_lv_type(lvt_enum); for (i = 0; i < cmd->command->rule_count; i++) { rule = &cmd->command->rules[i]; /* * RULE: INVALID|REQUIRE * * If all the conditions apply to the command+LV, then * the checks are performed. If all conditions are zero * (!opts_count, !lvt_bits, !lvp_bits), then the check * is always performed. * * Conditions: * * 1. options (opts): if any of the specified options are set, * then the checks may apply. * * 2. LV types (lvt_bits): if any of the specified LV types * match the LV, then the checks may apply. * * 3. LV properties (lvp_bits): if all of the specified * LV properties match the LV, then the checks may apply. * * If conditions 1, 2, 3 all pass, then the checks apply. * * Checks: * * 1. options (check_opts): * INVALID: if any of the specified options are set, * then the command fails. * REQUIRE: if any of the specified options are not set, * then the command fails. * * 2. LV types (check_lvt_bits): * INVALID: if any of the specified LV types match the LV, * then the command fails. * REQUIRE: if none of the specified LV types match the LV, * then the command fails. * * 3. LV properties (check_lvp_bits): * INVALID: if any of the specified LV properties match * the LV, then the command fails. * REQUIRE: if any of the specified LV properties do not match * the LV, then the command fails. */ if (rule->opts_count && !opt_in_list_is_set(cmd, rule->opts, rule->opts_count, NULL, NULL)) continue; /* If LV matches one type in lvt_bits, this returns 1. */ if (rule->lvt_bits && !_lv_types_match(cmd, lv, rule->lvt_bits, NULL, NULL)) continue; /* If LV matches all properties in lvp_bits, this returns 1. */ if (rule->lvp_bits && !_lv_props_match(cmd, lv, rule->lvp_bits, NULL, NULL)) continue; /* * Check the options, LV types, LV properties. */ if (rule->check_opts) opt_in_list_is_set(cmd, rule->check_opts, rule->check_opts_count, &opts_match_count, &opts_unmatch_count); if (rule->check_lvt_bits) _lv_types_match(cmd, lv, rule->check_lvt_bits, &lv_types_match_bits, &lv_types_unmatch_bits); if (rule->check_lvp_bits) _lv_props_match(cmd, lv, rule->check_lvp_bits, &lv_props_match_bits, &lv_props_unmatch_bits); /* * Evaluate if the check results pass based on the rule. * The options are checked again here because the previous * option validation (during command matching) does not cover * cases where the option is combined with conditions of LV types * or properties. */ /* Fail if any invalid options are set. */ if (rule->check_opts && (rule->rule == RULE_INVALID) && opts_match_count) { memset(buf, 0, sizeof(buf)); opt_array_to_str(cmd, rule->check_opts, rule->check_opts_count, buf, sizeof(buf)); log_warn("An invalid option is set: %s", buf); ret = 0; } /* Fail if any required options are not set. */ if (rule->check_opts && (rule->rule == RULE_REQUIRE) && opts_unmatch_count) { memset(buf, 0, sizeof(buf)); opt_array_to_str(cmd, rule->check_opts, rule->check_opts_count, buf, sizeof(buf)); log_warn("A required option is not set: %s", buf); ret = 0; } /* Fail if the LV matches any of the invalid LV types. */ if (rule->check_lvt_bits && (rule->rule == RULE_INVALID) && lv_types_match_bits) { log_warn("Command on LV %s with invalid type: %s", display_lvname(lv), lvtype ? lvtype->name : "unknown"); ret = 0; } /* Fail if the LV does not match any of the required LV types. */ if (rule->check_lvt_bits && (rule->rule == RULE_REQUIRE) && !lv_types_match_bits) { memset(buf, 0, sizeof(buf)); lvt_bits_to_str(rule->check_lvt_bits, buf, sizeof(buf)); log_warn("Command on LV %s with type %s does not match required type: %s", display_lvname(lv), lvtype ? lvtype->name : "unknown", buf); ret = 0; } /* Fail if the LV matches any of the invalid LV properties. */ if (rule->check_lvp_bits && (rule->rule == RULE_INVALID) && lv_props_match_bits) { memset(buf, 0, sizeof(buf)); lvp_bits_to_str(lv_props_match_bits, buf, sizeof(buf)); log_warn("Command on LV %s with invalid properties: %s", display_lvname(lv), buf); ret = 0; } /* Fail if the LV does not match any of the required LV properties. */ if (rule->check_lvp_bits && (rule->rule == RULE_REQUIRE) && lv_props_unmatch_bits) { memset(buf, 0, sizeof(buf)); lvp_bits_to_str(lv_props_unmatch_bits, buf, sizeof(buf)); log_warn("Command on LV %s requires properties: %s", display_lvname(lv), buf); ret = 0; } } return ret; } /* * Return which arg position the given LV is at, * where 1 represents the first position arg. * When the first position arg is repeatable, * return 1 for all. * * Return 0 when the command has no required * position args. (optional position args are * not considered.) */ static int _find_lv_arg_position(struct cmd_context *cmd, struct logical_volume *lv) { const char *sep, *lvname; int i; if (cmd->command->rp_count == 0) return 0; if (cmd->command->rp_count == 1) return 1; for (i = 0; i < cmd->position_argc; i++) { if (i == cmd->command->rp_count) break; if (!val_bit_is_set(cmd->command->required_pos_args[i].def.val_bits, lv_VAL)) continue; if ((sep = strstr(cmd->position_argv[i], "/"))) lvname = sep + 1; else lvname = cmd->position_argv[i]; if (!strcmp(lvname, lv->name)) return i + 1; } /* * If the last position arg is an LV and this * arg is beyond that position, then the last * LV position arg is repeatable, so return * that position. */ if (i == cmd->command->rp_count) { int last_pos = cmd->command->rp_count; if (val_bit_is_set(cmd->command->required_pos_args[last_pos-1].def.val_bits, lv_VAL)) return last_pos; } return 0; } int process_each_lv_in_vg(struct cmd_context *cmd, struct volume_group *vg, struct dm_list *arg_lvnames, const struct dm_list *tags_in, int stop_on_error, struct processing_handle *handle, check_single_lv_fn_t check_single_lv, process_single_lv_fn_t process_single_lv) { log_report_t saved_log_report_state = log_get_report_state(); char lv_uuid[64] __attribute__((aligned(8))); char vg_uuid[64] __attribute__((aligned(8))); int ret_max = ECMD_PROCESSED; int ret = 0; int whole_selected = 0; int handle_supplied = handle != NULL; unsigned process_lv; unsigned process_all = 0; unsigned tags_supplied = 0; unsigned lvargs_supplied = 0; int lv_is_named_arg; int lv_arg_pos; struct lv_list *lvl; struct dm_str_list *sl; struct dm_list final_lvs; struct lv_list *final_lvl; struct dm_list found_arg_lvnames; struct glv_list *glvl, *tglvl; int do_report_ret_code = 1; log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_LV); vg_uuid[0] = '\0'; if (!id_write_format(&vg->id, vg_uuid, sizeof(vg_uuid))) stack; dm_list_init(&final_lvs); dm_list_init(&found_arg_lvnames); if (!vg_check_status(vg, EXPORTED_VG)) { ret_max = ECMD_FAILED; goto_out; } if (tags_in && !dm_list_empty(tags_in)) tags_supplied = 1; if (arg_lvnames && !dm_list_empty(arg_lvnames)) lvargs_supplied = 1; if (!handle && !(handle = init_processing_handle(cmd, NULL))) { ret_max = ECMD_FAILED; goto_out; } if (handle->internal_report_for_select && !handle->selection_handle && !init_selection_handle(cmd, handle, LVS)) { ret_max = ECMD_FAILED; goto_out; } /* Process all LVs in this VG if no restrictions given * or if VG tags match. */ if ((!tags_supplied && !lvargs_supplied) || (tags_supplied && str_list_match_list(tags_in, &vg->tags, NULL))) process_all = 1; log_set_report_object_group_and_group_id(vg->name, vg_uuid); dm_list_iterate_items(lvl, &vg->lvs) { lv_uuid[0] = '\0'; if (!id_write_format(&lvl->lv->lvid.id[1], lv_uuid, sizeof(lv_uuid))) stack; log_set_report_object_name_and_id(lvl->lv->name, lv_uuid); if (sigint_caught()) { ret_max = ECMD_FAILED; goto_out; } if (lv_is_snapshot(lvl->lv)) continue; /* Skip availability change for non-virt snaps when processing all LVs */ /* FIXME: pass process_all to process_single_lv() */ if (process_all && arg_is_set(cmd, activate_ARG) && lv_is_cow(lvl->lv) && !lv_is_virtual_origin(origin_from_cow(lvl->lv))) continue; if (lv_is_virtual_origin(lvl->lv) && !arg_is_set(cmd, all_ARG)) { if (lvargs_supplied && str_list_match_item(arg_lvnames, lvl->lv->name)) log_print_unless_silent("Ignoring virtual origin logical volume %s.", display_lvname(lvl->lv)); continue; } /* * Only let hidden LVs through if --all was used or the LVs * were specifically named on the command line. */ if (!lvargs_supplied && !lv_is_visible(lvl->lv) && !arg_is_set(cmd, all_ARG)) continue; /* * Only let sanlock LV through if --all was used or if * it is named on the command line. */ if (lv_is_lockd_sanlock_lv(lvl->lv)) { if (arg_is_set(cmd, all_ARG) || (lvargs_supplied && str_list_match_item(arg_lvnames, lvl->lv->name))) { log_very_verbose("Processing lockd_sanlock_lv %s/%s.", vg->name, lvl->lv->name); } else { continue; } } /* * process the LV if one of the following: * - process_all is set * - LV name matches a supplied LV name * - LV tag matches a supplied LV tag * - LV matches the selection */ process_lv = process_all; if (lvargs_supplied && str_list_match_item(arg_lvnames, lvl->lv->name)) { /* Remove LV from list of unprocessed LV names */ str_list_del(arg_lvnames, lvl->lv->name); str_list_add(cmd->mem, &found_arg_lvnames, lvl->lv->name); process_lv = 1; } if (!process_lv && tags_supplied && str_list_match_list(tags_in, &lvl->lv->tags, NULL)) process_lv = 1; process_lv = process_lv && select_match_lv(cmd, handle, vg, lvl->lv) && _select_matches(handle); if (sigint_caught()) { ret_max = ECMD_FAILED; goto_out; } if (!process_lv) continue; log_very_verbose("Adding %s/%s to the list of LVs to be processed.", vg->name, lvl->lv->name); if (!(final_lvl = dm_pool_zalloc(cmd->mem, sizeof(struct lv_list)))) { log_error("Failed to allocate final LV list item."); ret_max = ECMD_FAILED; goto out; } final_lvl->lv = lvl->lv; dm_list_add(&final_lvs, &final_lvl->list); } log_set_report_object_name_and_id(NULL, NULL); dm_list_iterate_items(lvl, &final_lvs) { lv_uuid[0] = '\0'; if (!id_write_format(&lvl->lv->lvid.id[1], lv_uuid, sizeof(lv_uuid))) stack; log_set_report_object_name_and_id(lvl->lv->name, lv_uuid); if (sigint_caught()) { ret_max = ECMD_FAILED; goto_out; } /* * FIXME: Once we have index over vg->removed_lvs, check directly * LV presence there and remove LV_REMOVE flag/lv_is_removed fn * as they won't be needed anymore. */ if (lv_is_removed(lvl->lv)) continue; lv_is_named_arg = str_list_match_item(&found_arg_lvnames, lvl->lv->name); lv_arg_pos = _find_lv_arg_position(cmd, lvl->lv); /* * The command definition may include restrictions on the * types and properties of LVs that can be processed. */ if (!_check_lv_types(cmd, lvl->lv, lv_arg_pos)) { /* FIXME: include this result in report log? */ if (lv_is_named_arg) { log_error("Operation not permitted on LV %s.", display_lvname(lvl->lv)); ret_max = ECMD_FAILED; } continue; } if (!_check_lv_rules(cmd, lvl->lv)) { /* FIXME: include this result in report log? */ if (lv_is_named_arg) { log_error("Operation not permitted on LV %s.", display_lvname(lvl->lv)); ret_max = ECMD_FAILED; } continue; } if (check_single_lv && !check_single_lv(cmd, lvl->lv, handle, lv_is_named_arg)) { if (lv_is_named_arg) ret_max = ECMD_FAILED; continue; } log_very_verbose("Processing LV %s in VG %s.", lvl->lv->name, vg->name); ret = process_single_lv(cmd, lvl->lv, handle); if (handle_supplied) _update_selection_result(handle, &whole_selected); if (ret != ECMD_PROCESSED) stack; report_log_ret_code(ret); if (ret > ret_max) ret_max = ret; if (stop_on_error && ret != ECMD_PROCESSED) { do_report_ret_code = 0; goto_out; } } log_set_report_object_name_and_id(NULL, NULL); if (handle->include_historical_lvs && !tags_supplied) { if (!dm_list_size(&_historical_lv.segments)) dm_list_add(&_historical_lv.segments, &_historical_lv_segment.list); _historical_lv.vg = vg; dm_list_iterate_items_safe(glvl, tglvl, &vg->historical_lvs) { lv_uuid[0] = '\0'; if (!id_write_format(&glvl->glv->historical->lvid.id[1], lv_uuid, sizeof(lv_uuid))) stack; log_set_report_object_name_and_id(glvl->glv->historical->name, lv_uuid); process_lv = process_all; if (lvargs_supplied && (sl = _str_list_match_item_with_prefix(arg_lvnames, HISTORICAL_LV_PREFIX, glvl->glv->historical->name))) { str_list_del(arg_lvnames, glvl->glv->historical->name); dm_list_del(&sl->list); process_lv = 1; } process_lv = process_lv && select_match_lv(cmd, handle, vg, lvl->lv) && _select_matches(handle); if (sigint_caught()) { ret_max = ECMD_FAILED; goto_out; } if (!process_lv) continue; _historical_lv.this_glv = glvl->glv; _historical_lv.name = glvl->glv->historical->name; log_very_verbose("Processing historical LV %s in VG %s.", glvl->glv->historical->name, vg->name); ret = process_single_lv(cmd, &_historical_lv, handle); if (handle_supplied) _update_selection_result(handle, &whole_selected); if (ret != ECMD_PROCESSED) stack; report_log_ret_code(ret); if (ret > ret_max) ret_max = ret; if (stop_on_error && ret != ECMD_PROCESSED) { do_report_ret_code = 0; goto_out; } } log_set_report_object_name_and_id(NULL, NULL); } if (lvargs_supplied) { /* * FIXME: lvm supports removal of LV with all its dependencies * this leads to miscalculation that depends on the order of args. */ dm_list_iterate_items(sl, arg_lvnames) { log_set_report_object_name_and_id(sl->str, NULL); log_error("Failed to find logical volume \"%s/%s\"", vg->name, sl->str); if (ret_max < ECMD_FAILED) ret_max = ECMD_FAILED; report_log_ret_code(ret_max); } } do_report_ret_code = 0; out: if (do_report_ret_code) report_log_ret_code(ret_max); log_set_report_object_name_and_id(NULL, NULL); log_set_report_object_group_and_group_id(NULL, NULL); if (!handle_supplied) destroy_processing_handle(cmd, handle); else _set_final_selection_result(handle, whole_selected); log_restore_report_state(saved_log_report_state); return ret_max; } /* * If arg is tag, add it to arg_tags * else the arg is either vgname or vgname/lvname: * - add the vgname of each arg to arg_vgnames * - if arg has no lvname, add just vgname arg_lvnames, * it represents all lvs in the vg * - if arg has lvname, add vgname/lvname to arg_lvnames */ static int _get_arg_lvnames(struct cmd_context *cmd, int argc, char **argv, const char *one_vgname, const char *one_lvname, struct dm_list *arg_vgnames, struct dm_list *arg_lvnames, struct dm_list *arg_tags) { int opt = 0; int ret_max = ECMD_PROCESSED; char *vglv; size_t vglv_sz; const char *vgname; const char *lv_name; const char *tmp_lv_name; const char *vgname_def; unsigned dev_dir_found; if (one_vgname) { if (!str_list_add(cmd->mem, arg_vgnames, dm_pool_strdup(cmd->mem, one_vgname))) { log_error("strlist allocation failed."); return ECMD_FAILED; } if (!one_lvname) { if (!str_list_add(cmd->mem, arg_lvnames, dm_pool_strdup(cmd->mem, one_vgname))) { log_error("strlist allocation failed."); return ECMD_FAILED; } } else { vglv_sz = strlen(one_vgname) + strlen(one_lvname) + 2; if (!(vglv = dm_pool_alloc(cmd->mem, vglv_sz)) || dm_snprintf(vglv, vglv_sz, "%s/%s", one_vgname, one_lvname) < 0) { log_error("vg/lv string alloc failed."); return ECMD_FAILED; } if (!str_list_add(cmd->mem, arg_lvnames, vglv)) { log_error("strlist allocation failed."); return ECMD_FAILED; } } return ret_max; } for (; opt < argc; opt++) { lv_name = argv[opt]; dev_dir_found = 0; /* Do we have a tag or vgname or lvname? */ vgname = lv_name; if (*vgname == '@') { if (!validate_tag(vgname + 1)) { log_error("Skipping invalid tag %s.", vgname); continue; } if (!str_list_add(cmd->mem, arg_tags, dm_pool_strdup(cmd->mem, vgname + 1))) { log_error("strlist allocation failed."); return ECMD_FAILED; } continue; } /* FIXME Jumbled parsing */ vgname = skip_dev_dir(cmd, vgname, &dev_dir_found); if (*vgname == '/') { log_error("\"%s\": Invalid path for Logical Volume.", argv[opt]); if (ret_max < ECMD_FAILED) ret_max = ECMD_FAILED; continue; } lv_name = vgname; if ((tmp_lv_name = strchr(vgname, '/'))) { /* Must be an LV */ lv_name = tmp_lv_name; while (*lv_name == '/') lv_name++; if (!(vgname = extract_vgname(cmd, vgname))) { if (ret_max < ECMD_FAILED) { stack; ret_max = ECMD_FAILED; } continue; } } else if (!dev_dir_found && (vgname_def = _default_vgname(cmd))) vgname = vgname_def; else lv_name = NULL; if (!str_list_add(cmd->mem, arg_vgnames, dm_pool_strdup(cmd->mem, vgname))) { log_error("strlist allocation failed."); return ECMD_FAILED; } if (!lv_name) { if (!str_list_add(cmd->mem, arg_lvnames, dm_pool_strdup(cmd->mem, vgname))) { log_error("strlist allocation failed."); return ECMD_FAILED; } } else { vglv_sz = strlen(vgname) + strlen(lv_name) + 2; if (!(vglv = dm_pool_alloc(cmd->mem, vglv_sz)) || dm_snprintf(vglv, vglv_sz, "%s/%s", vgname, lv_name) < 0) { log_error("vg/lv string alloc failed."); return ECMD_FAILED; } if (!str_list_add(cmd->mem, arg_lvnames, vglv)) { log_error("strlist allocation failed."); return ECMD_FAILED; } } } return ret_max; } /* * This is a non-standard way of finding vgname/lvname to process. It exists * because an earlier form of lvconvert did not follow the standard form, and * came up with its own inconsistent approach. * * In this case, when the position arg is a single name, it is treated as an LV * name (not a VG name). This leaves the VG unknown. So, other option values, * or env var, must be searched for a VG name. If one of the option values * contains a vgname/lvname value, then the VG name is extracted and used for * the LV position arg. Or, if the env var has the VG name, that is used. * * Other option values that are searched for a VG name are: * --thinpool, --cachepool. * * . command vg/lv1 * . add vg to arg_vgnames * . add vg/lv1 to arg_lvnames * * command lv1 * . error: no vg name (unless LVM_VG_NAME) * * command --option=vg/lv1 vg/lv2 * . verify both vg names match * . add vg to arg_vgnames * . add vg/lv2 to arg_lvnames * * command --option=lv1 lv2 * . error: no vg name (unless LVM_VG_NAME) * * command --option=vg/lv1 lv2 * . add vg to arg_vgnames * . add vg/lv2 to arg_lvnames * * command --option=lv1 vg/lv2 * . add vg to arg_vgnames * . add vg/lv2 to arg_lvnames */ static int _get_arg_lvnames_using_options(struct cmd_context *cmd, int argc, char **argv, struct dm_list *arg_vgnames, struct dm_list *arg_lvnames, struct dm_list *arg_tags) { const char *pos_name = NULL; const char *arg_name = NULL; const char *pos_vgname = NULL; const char *opt_vgname = NULL; const char *pos_lvname = NULL; const char *env_vgname = NULL; const char *use_vgname = NULL; char *tmp_name; char *split; char *vglv; size_t vglv_sz; if (argc != 1) { log_error("One LV position arg is required."); return ECMD_FAILED; } if (!(pos_name = dm_pool_strdup(cmd->mem, argv[0]))) { log_error("string alloc failed."); return ECMD_FAILED; } if (*pos_name == '@') { if (!validate_tag(pos_name + 1)) { log_error("Skipping invalid tag %s.", pos_name); return ECMD_FAILED; } if (!str_list_add(cmd->mem, arg_tags, dm_pool_strdup(cmd->mem, pos_name + 1))) { log_error("strlist allocation failed."); return ECMD_FAILED; } return ECMD_PROCESSED; } if (*pos_name == '/') { if (!(pos_name = skip_dev_dir(cmd, pos_name, NULL))) return ECMD_FAILED; } if ((split = strchr(pos_name, '/'))) { /* * This splits pos_name 'x/y' into pos_vgname 'x' and pos_lvname 'y' * It skips repeated '/', e.g. x//y * It also checks and fails for extra '/', e.g. x/y/z */ pos_vgname = _extract_vgname(cmd, pos_name, &pos_lvname); } else { pos_lvname = pos_name; pos_vgname = NULL; } if (arg_is_set(cmd, thinpool_ARG)) arg_name = arg_str_value(cmd, thinpool_ARG, NULL); else if (arg_is_set(cmd, cachepool_ARG)) arg_name = arg_str_value(cmd, cachepool_ARG, NULL); env_vgname = _default_vgname(cmd); if (!pos_vgname && !arg_name && !env_vgname) { log_error("Cannot find VG name for LV %s.", pos_lvname); return ECMD_FAILED; } if (arg_name && (split = strchr(arg_name, '/'))) { /* combined VG/LV */ if (!(tmp_name = dm_pool_strdup(cmd->mem, arg_name))) { log_error("string alloc failed."); return ECMD_FAILED; } if (!(split = strchr(tmp_name, '/'))) return ECMD_FAILED; opt_vgname = tmp_name; /* Don't care about opt lvname. */ /* opt_lvname = split + 1; */ *split = '\0'; } else { /* Don't care about opt lvname. */ /* opt_lvname = arg_name; */ opt_vgname = NULL; } if (!pos_vgname && !opt_vgname && !env_vgname) { log_error("Cannot find VG name for LV %s.", pos_lvname); return ECMD_FAILED; } if (pos_vgname && opt_vgname && strcmp(pos_vgname, opt_vgname)) { log_error("VG name mismatch from position arg (%s) and option arg (%s).", pos_vgname, opt_vgname); return ECMD_FAILED; } if (pos_vgname) use_vgname = pos_vgname; else if (opt_vgname) use_vgname = opt_vgname; else if (env_vgname) use_vgname = env_vgname; else return_ECMD_FAILED; if (!str_list_add(cmd->mem, arg_vgnames, dm_pool_strdup(cmd->mem, use_vgname))) { log_error("strlist allocation failed."); return ECMD_FAILED; } vglv_sz = strlen(use_vgname) + strlen(pos_lvname) + 2; if (!(vglv = dm_pool_alloc(cmd->mem, vglv_sz)) || dm_snprintf(vglv, vglv_sz, "%s/%s", use_vgname, pos_lvname) < 0) { log_error("vg/lv string alloc failed."); return ECMD_FAILED; } if (!str_list_add(cmd->mem, arg_lvnames, vglv)) { log_error("strlist allocation failed."); return ECMD_FAILED; } return ECMD_PROCESSED; } static int _process_lv_vgnameid_list(struct cmd_context *cmd, uint32_t read_flags, struct dm_list *vgnameids_to_process, struct dm_list *arg_vgnames, struct dm_list *arg_lvnames, struct dm_list *arg_tags, struct processing_handle *handle, check_single_lv_fn_t check_single_lv, process_single_lv_fn_t process_single_lv) { log_report_t saved_log_report_state = log_get_report_state(); char uuid[64] __attribute__((aligned(8))); struct volume_group *vg; struct vgnameid_list *vgnl; struct dm_str_list *sl; struct dm_list *tags_arg; struct dm_list lvnames; uint32_t lockd_state = 0; const char *vg_name; const char *vg_uuid; const char *vgn; const char *lvn; int ret_max = ECMD_PROCESSED; int ret; int skip; int notfound; int already_locked; int do_report_ret_code = 1; log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_VG); dm_list_iterate_items(vgnl, vgnameids_to_process) { vg_name = vgnl->vg_name; vg_uuid = vgnl->vgid; skip = 0; notfound = 0; uuid[0] = '\0'; if (vg_uuid && !id_write_format((const struct id*)vg_uuid, uuid, sizeof(uuid))) stack; log_set_report_object_name_and_id(vg_name, uuid); if (sigint_caught()) { ret_max = ECMD_FAILED; goto_out; } /* * arg_lvnames contains some elements that are just "vgname" * which means process all lvs in the vg. Other elements * are "vgname/lvname" which means process only the select * lvs in the vg. */ tags_arg = arg_tags; dm_list_init(&lvnames); /* LVs to be processed in this VG */ dm_list_iterate_items(sl, arg_lvnames) { vgn = sl->str; lvn = strchr(vgn, '/'); if (!lvn && !strcmp(vgn, vg_name)) { /* Process all LVs in this VG */ tags_arg = NULL; dm_list_init(&lvnames); break; } if (lvn && !strncmp(vgn, vg_name, strlen(vg_name)) && strlen(vg_name) == (size_t) (lvn - vgn)) { if (!str_list_add(cmd->mem, &lvnames, dm_pool_strdup(cmd->mem, lvn + 1))) { log_error("strlist allocation failed."); ret_max = ECMD_FAILED; goto out; } } } log_very_verbose("Processing VG %s %s", vg_name, vg_uuid ? uuid : ""); if (!lockd_vg(cmd, vg_name, NULL, 0, &lockd_state)) { ret_max = ECMD_FAILED; report_log_ret_code(ret_max); continue; } already_locked = lvmcache_vgname_is_locked(vg_name); vg = vg_read(cmd, vg_name, vg_uuid, read_flags, lockd_state); if (_ignore_vg(vg, vg_name, arg_vgnames, read_flags, &skip, ¬found)) { stack; ret_max = ECMD_FAILED; report_log_ret_code(ret_max); goto endvg; } if (skip || notfound) goto endvg; ret = process_each_lv_in_vg(cmd, vg, &lvnames, tags_arg, 0, handle, check_single_lv, process_single_lv); if (ret != ECMD_PROCESSED) stack; report_log_ret_code(ret); if (ret > ret_max) ret_max = ret; if (!already_locked) unlock_vg(cmd, vg, vg_name); endvg: release_vg(vg); if (!lockd_vg(cmd, vg_name, "un", 0, &lockd_state)) stack; log_set_report_object_name_and_id(NULL, NULL); } do_report_ret_code = 0; out: if (do_report_ret_code) report_log_ret_code(ret_max); log_restore_report_state(saved_log_report_state); return ret_max; } /* * Call process_single_lv() for each LV selected by the command line arguments. */ int process_each_lv(struct cmd_context *cmd, int argc, char **argv, const char *one_vgname, const char *one_lvname, uint32_t read_flags, struct processing_handle *handle, check_single_lv_fn_t check_single_lv, process_single_lv_fn_t process_single_lv) { log_report_t saved_log_report_state = log_get_report_state(); int handle_supplied = handle != NULL; struct dm_list arg_tags; /* str_list */ struct dm_list arg_vgnames; /* str_list */ struct dm_list arg_lvnames; /* str_list */ struct dm_list vgnameids_on_system; /* vgnameid_list */ struct dm_list vgnameids_to_process; /* vgnameid_list */ int enable_all_vgs = (cmd->cname->flags & ALL_VGS_IS_DEFAULT); int process_all_vgs_on_system = 0; int ret_max = ECMD_PROCESSED; int ret; log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_LV); /* Disable error in vg_read so we can print it from ignore_vg. */ cmd->vg_read_print_access_error = 0; dm_list_init(&arg_tags); dm_list_init(&arg_vgnames); dm_list_init(&arg_lvnames); dm_list_init(&vgnameids_on_system); dm_list_init(&vgnameids_to_process); /* * Find any LVs, VGs or tags explicitly provided on the command line. */ if (cmd->cname->flags & GET_VGNAME_FROM_OPTIONS) ret = _get_arg_lvnames_using_options(cmd, argc, argv, &arg_vgnames, &arg_lvnames, &arg_tags); else ret = _get_arg_lvnames(cmd, argc, argv, one_vgname, one_lvname, &arg_vgnames, &arg_lvnames, &arg_tags); if (ret != ECMD_PROCESSED) { ret_max = ret; goto_out; } if (!handle && !(handle = init_processing_handle(cmd, NULL))) { ret_max = ECMD_FAILED; goto_out; } if (handle->internal_report_for_select && !handle->selection_handle && !init_selection_handle(cmd, handle, LVS)) { ret_max = ECMD_FAILED; goto_out; } /* * Process all VGs on the system when: * . tags are specified and all VGs need to be read to * look for matching tags. * . no VG names are specified and the command defaults * to processing all VGs when none are specified. * . no VG names are specified and the select option needs * resolving. */ if (!dm_list_empty(&arg_tags)) process_all_vgs_on_system = 1; else if (dm_list_empty(&arg_vgnames) && enable_all_vgs) process_all_vgs_on_system = 1; else if (dm_list_empty(&arg_vgnames) && handle->internal_report_for_select) process_all_vgs_on_system = 1; /* * Needed for a current listing of the global VG namespace. */ if (process_all_vgs_on_system && !lockd_gl(cmd, "sh", 0)) { ret_max = ECMD_FAILED; goto_out; } /* * A list of all VGs on the system is needed when: * . processing all VGs on the system * . A VG name is specified which may refer to one * of multiple VGs on the system with that name. */ log_debug("Get list of VGs on system"); if (!get_vgnameids(cmd, &vgnameids_on_system, NULL, 0)) { ret_max = ECMD_FAILED; goto_out; } if (!dm_list_empty(&arg_vgnames)) { /* This may remove entries from arg_vgnames or vgnameids_on_system. */ ret = _resolve_duplicate_vgnames(cmd, &arg_vgnames, &vgnameids_on_system); if (ret > ret_max) ret_max = ret; if (dm_list_empty(&arg_vgnames) && dm_list_empty(&arg_tags)) { ret_max = ECMD_FAILED; goto out; } } if (dm_list_empty(&arg_vgnames) && dm_list_empty(&vgnameids_on_system)) { /* FIXME Should be log_print, but suppressed for reporting cmds */ log_verbose("No volume groups found."); ret_max = ECMD_PROCESSED; goto out; } if (dm_list_empty(&arg_vgnames)) read_flags |= READ_OK_NOTFOUND; /* * When processing all VGs, vgnameids_on_system simply becomes * vgnameids_to_process. * When processing only specified VGs, then for each item in * arg_vgnames, move the corresponding entry from * vgnameids_on_system to vgnameids_to_process. */ if (process_all_vgs_on_system) dm_list_splice(&vgnameids_to_process, &vgnameids_on_system); else _choose_vgs_to_process(cmd, &arg_vgnames, &vgnameids_on_system, &vgnameids_to_process); ret = _process_lv_vgnameid_list(cmd, read_flags, &vgnameids_to_process, &arg_vgnames, &arg_lvnames, &arg_tags, handle, check_single_lv, process_single_lv); if (ret > ret_max) ret_max = ret; out: if (!handle_supplied) destroy_processing_handle(cmd, handle); log_restore_report_state(saved_log_report_state); return ret_max; } static int _get_arg_pvnames(struct cmd_context *cmd, int argc, char **argv, struct dm_list *arg_pvnames, struct dm_list *arg_tags) { int opt = 0; char *at_sign, *tagname; char *arg_name; int ret_max = ECMD_PROCESSED; for (; opt < argc; opt++) { arg_name = argv[opt]; dm_unescape_colons_and_at_signs(arg_name, NULL, &at_sign); if (at_sign && (at_sign == arg_name)) { tagname = at_sign + 1; if (!validate_tag(tagname)) { log_error("Skipping invalid tag %s.", tagname); if (ret_max < EINVALID_CMD_LINE) ret_max = EINVALID_CMD_LINE; continue; } if (!str_list_add(cmd->mem, arg_tags, dm_pool_strdup(cmd->mem, tagname))) { log_error("strlist allocation failed."); return ECMD_FAILED; } continue; } if (!str_list_add(cmd->mem, arg_pvnames, dm_pool_strdup(cmd->mem, arg_name))) { log_error("strlist allocation failed."); return ECMD_FAILED; } } return ret_max; } static int _get_arg_devices(struct cmd_context *cmd, struct dm_list *arg_pvnames, struct dm_list *arg_devices) { struct dm_str_list *sl; struct device_id_list *dil; int ret_max = ECMD_PROCESSED; dm_list_iterate_items(sl, arg_pvnames) { if (!(dil = dm_pool_alloc(cmd->mem, sizeof(*dil)))) { log_error("device_id_list alloc failed."); return ECMD_FAILED; } if (!(dil->dev = dev_cache_get(sl->str, cmd->filter))) { log_error("Failed to find device for physical volume \"%s\".", sl->str); ret_max = ECMD_FAILED; } else { strncpy(dil->pvid, dil->dev->pvid, ID_LEN); dm_list_add(arg_devices, &dil->list); } } return ret_max; } static int _get_all_devices(struct cmd_context *cmd, struct dm_list *all_devices) { struct dev_iter *iter; struct device *dev; struct device_id_list *dil; int r = ECMD_FAILED; log_debug("Getting list of all devices"); lvmcache_seed_infos_from_lvmetad(cmd); if (!(iter = dev_iter_create(cmd->full_filter, 1))) { log_error("dev_iter creation failed."); return ECMD_FAILED; } while ((dev = dev_iter_get(iter))) { if (!(dil = dm_pool_alloc(cmd->mem, sizeof(*dil)))) { log_error("device_id_list alloc failed."); goto out; } strncpy(dil->pvid, dev->pvid, ID_LEN); dil->dev = dev; dm_list_add(all_devices, &dil->list); } r = ECMD_PROCESSED; out: dev_iter_destroy(iter); return r; } static int _device_list_remove(struct dm_list *devices, struct device *dev) { struct device_id_list *dil; dm_list_iterate_items(dil, devices) { if (dil->dev == dev) { dm_list_del(&dil->list); return 1; } } return 0; } static struct device_id_list *_device_list_find_dev(struct dm_list *devices, struct device *dev) { struct device_id_list *dil; dm_list_iterate_items(dil, devices) { if (dil->dev == dev) return dil; } return NULL; } static int _device_list_copy(struct cmd_context *cmd, struct dm_list *src, struct dm_list *dst) { struct device_id_list *dil; struct device_id_list *dil_new; dm_list_iterate_items(dil, src) { if (!(dil_new = dm_pool_alloc(cmd->mem, sizeof(*dil_new)))) { log_error("device_id_list alloc failed."); return ECMD_FAILED; } dil_new->dev = dil->dev; strncpy(dil_new->pvid, dil->pvid, ID_LEN); dm_list_add(dst, &dil_new->list); } return ECMD_PROCESSED; } /* * For each device in arg_devices or all_devices that has a pvid, add a copy of * that device to arg_missed. All PVs (devices with a pvid) should have been * found while processing all VGs (including orphan VGs). But, some may have * been missed if VGs were changing at the same time. This function creates a * list of PVs that still remain in the given list, i.e. were missed the first * time. A second iteration through VGs can look for these explicitly. * (arg_devices is used if specific PVs are being processed; all_devices is * used if all devs are being processed) */ static int _get_missed_pvs(struct cmd_context *cmd, struct dm_list *devices, struct dm_list *arg_missed) { struct device_id_list *dil; struct device_id_list *dil_missed; dm_list_iterate_items(dil, devices) { if (!dil->pvid[0]) continue; if (!(dil_missed = dm_pool_alloc(cmd->mem, sizeof(*dil_missed)))) { log_error("device_id_list alloc failed."); return ECMD_FAILED; } dil_missed->dev = dil->dev; strncpy(dil_missed->pvid, dil->pvid, ID_LEN); dm_list_add(arg_missed, &dil_missed->list); } return ECMD_PROCESSED; } static int _process_device_list(struct cmd_context *cmd, struct dm_list *all_devices, struct processing_handle *handle, process_single_pv_fn_t process_single_pv) { struct physical_volume pv_dummy; struct physical_volume *pv; struct device_id_list *dil; int ret_max = ECMD_PROCESSED; int ret = 0; log_debug("Processing devices that are not PVs"); /* * Pretend that each device is a PV with dummy values. * FIXME Formalise this extension or find an alternative. */ dm_list_iterate_items(dil, all_devices) { if (sigint_caught()) return_ECMD_FAILED; memset(&pv_dummy, 0, sizeof(pv_dummy)); dm_list_init(&pv_dummy.tags); dm_list_init(&pv_dummy.segments); pv_dummy.dev = dil->dev; pv = &pv_dummy; log_very_verbose("Processing device %s.", dev_name(dil->dev)); ret = process_single_pv(cmd, NULL, pv, handle); if (ret > ret_max) ret_max = ret; } return ECMD_PROCESSED; } static int _process_duplicate_pvs(struct cmd_context *cmd, struct dm_list *all_devices, struct dm_list *arg_devices, int process_all_devices, struct processing_handle *handle, process_single_pv_fn_t process_single_pv) { struct physical_volume pv_dummy; struct physical_volume *pv; struct device_id_list *dil; struct device_list *devl; struct dm_list unused_duplicate_devs; struct lvmcache_info *info; struct volume_group *vg = NULL; const char *vgname = NULL; const char *vgid = NULL; int ret_max = ECMD_PROCESSED; int ret = 0; dm_list_init(&unused_duplicate_devs); if (!lvmcache_get_unused_duplicate_devs(cmd, &unused_duplicate_devs)) return_ECMD_FAILED; dm_list_iterate_items(devl, &unused_duplicate_devs) { /* Duplicates are displayed if -a is used or the dev is named as an arg. */ _device_list_remove(all_devices, devl->dev); if (!process_all_devices && dm_list_empty(arg_devices)) continue; if ((dil = _device_list_find_dev(arg_devices, devl->dev))) _device_list_remove(arg_devices, devl->dev); if (!process_all_devices && !dil) continue; if (!(cmd->cname->flags & ENABLE_DUPLICATE_DEVS)) continue; /* * Use the cached VG from the preferred device for the PV, * the vg is only used to display the VG name. * * This VG from lvmcache was not read from the duplicate * dev being processed here, but from the preferred dev * in lvmcache. * * When a duplicate PV is displayed, the reporting fields * that come from the VG metadata are not shown, because * the dev is not a part of the VG, the dev for the * preferred PV is (also the VG metadata in lvmcache is * not from the duplicate dev, but from the preferred dev). */ log_very_verbose("Processing duplicate device %s.", dev_name(devl->dev)); /* * Don't pass dev to lvmcache_info_from_pvid because we looking * for the chosen/preferred dev for this pvid. */ if (!(info = lvmcache_info_from_pvid(devl->dev->pvid, NULL, 0))) { log_error(INTERNAL_ERROR "No info for pvid"); return_ECMD_FAILED; } vgname = lvmcache_vgname_from_info(info); if (vgname) vgid = lvmcache_vgid_from_vgname(cmd, vgname); if (vgid) vg = lvmcache_get_vg(cmd, vgname, vgid, 0); memset(&pv_dummy, 0, sizeof(pv_dummy)); dm_list_init(&pv_dummy.tags); dm_list_init(&pv_dummy.segments); pv_dummy.dev = devl->dev; pv_dummy.fmt = lvmcache_fmt_from_info(info); pv = &pv_dummy; ret = process_single_pv(cmd, vg, pv, handle); if (vg) release_vg(vg); if (ret > ret_max) ret_max = ret; if (sigint_caught()) return_ECMD_FAILED; } return ECMD_PROCESSED; } static int _process_pvs_in_vg(struct cmd_context *cmd, struct volume_group *vg, struct dm_list *all_devices, struct dm_list *arg_devices, struct dm_list *arg_tags, int process_all_pvs, int process_all_devices, int skip, struct processing_handle *handle, process_single_pv_fn_t process_single_pv) { log_report_t saved_log_report_state = log_get_report_state(); char pv_uuid[64] __attribute__((aligned(8))); char vg_uuid[64] __attribute__((aligned(8))); int handle_supplied = handle != NULL; struct physical_volume *pv; struct pv_list *pvl; struct device_id_list *dil; const char *pv_name; int process_pv; int do_report_ret_code = 1; int ret_max = ECMD_PROCESSED; int ret = 0; log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_PV); vg_uuid[0] = '\0'; if (!id_write_format(&vg->id, vg_uuid, sizeof(vg_uuid))) stack; if (!handle && (!(handle = init_processing_handle(cmd, NULL)))) { ret_max = ECMD_FAILED; goto_out; } if (handle->internal_report_for_select && !handle->selection_handle && !init_selection_handle(cmd, handle, PVS)) { ret_max = ECMD_FAILED; goto_out; } if (!is_orphan_vg(vg->name)) log_set_report_object_group_and_group_id(vg->name, vg_uuid); dm_list_iterate_items(pvl, &vg->pvs) { pv = pvl->pv; pv_name = pv_dev_name(pv); pv_uuid[0]='\0'; if (!id_write_format(&pv->id, pv_uuid, sizeof(pv_uuid))) stack; log_set_report_object_name_and_id(pv_name, pv_uuid); if (sigint_caught()) { ret_max = ECMD_FAILED; goto_out; } process_pv = process_all_pvs; /* Remove each arg_devices entry as it is processed. */ if (!process_pv && !dm_list_empty(arg_devices) && (dil = _device_list_find_dev(arg_devices, pv->dev))) { process_pv = 1; _device_list_remove(arg_devices, dil->dev); } if (!process_pv && !dm_list_empty(arg_tags) && str_list_match_list(arg_tags, &pv->tags, NULL)) process_pv = 1; process_pv = process_pv && select_match_pv(cmd, handle, vg, pv) && _select_matches(handle); if (process_pv) { if (skip) log_verbose("Skipping PV %s in VG %s.", pv_name, vg->name); else log_very_verbose("Processing PV %s in VG %s.", pv_name, vg->name); _device_list_remove(all_devices, pv->dev); /* * pv->dev should be found in all_devices unless it's a * case of a "missing device". Previously there have * been cases where we needed to skip processing the PV * if pv->dev was not found in all_devices to avoid * processing a PV twice, i.e. when the PV had no MDAs * it would be seen once in its real VG and again * wrongly in the orphan VG. This no longer happens. */ if (!skip) { ret = process_single_pv(cmd, vg, pv, handle); if (ret != ECMD_PROCESSED) stack; report_log_ret_code(ret); if (ret > ret_max) ret_max = ret; } } /* * When processing only specific PVs, we can quit once they've all been found. */ if (!process_all_pvs && dm_list_empty(arg_tags) && dm_list_empty(arg_devices)) break; log_set_report_object_name_and_id(NULL, NULL); } do_report_ret_code = 0; out: if (do_report_ret_code) report_log_ret_code(ret_max); log_set_report_object_name_and_id(NULL, NULL); log_set_report_object_group_and_group_id(NULL, NULL); if (!handle_supplied) destroy_processing_handle(cmd, handle); log_restore_report_state(saved_log_report_state); return ret_max; } /* * Iterate through all PVs in each listed VG. Process a PV if * its dev or tag matches arg_devices or arg_tags. If both * arg_devices and arg_tags are empty, then process all PVs. * No PV should be processed more than once. * * Each PV is removed from arg_devices and all_devices when it is * processed. Any names remaining in arg_devices were not found, and * should produce an error. Any devices remaining in all_devices were * not found and should be processed by process_device_list(). */ static int _process_pvs_in_vgs(struct cmd_context *cmd, uint32_t read_flags, struct dm_list *all_vgnameids, struct dm_list *all_devices, struct dm_list *arg_devices, struct dm_list *arg_tags, int process_all_pvs, int process_all_devices, struct processing_handle *handle, process_single_pv_fn_t process_single_pv) { log_report_t saved_log_report_state = log_get_report_state(); char uuid[64] __attribute__((aligned(8))); struct volume_group *vg; struct vgnameid_list *vgnl; const char *vg_name; const char *vg_uuid; uint32_t lockd_state = 0; int ret_max = ECMD_PROCESSED; int ret; int skip; int notfound; int already_locked; int do_report_ret_code = 1; log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_VG); dm_list_iterate_items(vgnl, all_vgnameids) { vg_name = vgnl->vg_name; vg_uuid = vgnl->vgid; skip = 0; notfound = 0; uuid[0] = '\0'; if (is_orphan_vg(vg_name)) { log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_ORPHAN); log_set_report_object_name_and_id(vg_name + sizeof(VG_ORPHANS), uuid); } else { if (vg_uuid && !id_write_format((const struct id*)vg_uuid, uuid, sizeof(uuid))) stack; log_set_report_object_name_and_id(vg_name, uuid); } if (sigint_caught()) { ret_max = ECMD_FAILED; goto_out; } if (!lockd_vg(cmd, vg_name, NULL, 0, &lockd_state)) { ret_max = ECMD_FAILED; report_log_ret_code(ret_max); continue; } log_debug("Processing PVs in VG %s", vg_name); already_locked = lvmcache_vgname_is_locked(vg_name); vg = vg_read(cmd, vg_name, vg_uuid, read_flags, lockd_state); if (_ignore_vg(vg, vg_name, NULL, read_flags, &skip, ¬found)) { stack; ret_max = ECMD_FAILED; report_log_ret_code(ret_max); if (!skip) goto endvg; /* Drop through to eliminate a clustered VG's PVs from the devices list */ } if (notfound) goto endvg; /* * Don't continue when skip is set, because we need to remove * vg->pvs entries from devices list. */ ret = _process_pvs_in_vg(cmd, vg, all_devices, arg_devices, arg_tags, process_all_pvs, process_all_devices, skip, handle, process_single_pv); if (ret != ECMD_PROCESSED) stack; report_log_ret_code(ret); if (ret > ret_max) ret_max = ret; if (!skip && !already_locked) unlock_vg(cmd, vg, vg->name); endvg: release_vg(vg); if (!lockd_vg(cmd, vg_name, "un", 0, &lockd_state)) stack; /* Quit early when possible. */ if (!process_all_pvs && dm_list_empty(arg_tags) && dm_list_empty(arg_devices)) { do_report_ret_code = 0; goto_out; } log_set_report_object_name_and_id(NULL, NULL); } do_report_ret_code = 0; out: if (do_report_ret_code) report_log_ret_code(ret_max); log_restore_report_state(saved_log_report_state); return ret_max; } int process_each_pv(struct cmd_context *cmd, int argc, char **argv, const char *only_this_vgname, int all_is_set, uint32_t read_flags, struct processing_handle *handle, process_single_pv_fn_t process_single_pv) { log_report_t saved_log_report_state = log_get_report_state(); struct dm_list arg_tags; /* str_list */ struct dm_list arg_pvnames; /* str_list */ struct dm_list arg_devices; /* device_id_list */ struct dm_list arg_missed; /* device_id_list */ struct dm_list all_vgnameids; /* vgnameid_list */ struct dm_list all_devices; /* device_id_list */ struct device_id_list *dil; int process_all_pvs; int process_all_devices; int orphans_locked; int ret_max = ECMD_PROCESSED; int ret; log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_PV); log_debug("Processing each PV"); /* * When processing a specific VG name, warn if it's inconsistent and * print an error if it's not found. Otherwise we're processing all * VGs, in which case the command doesn't care if the VG is inconsisent * or not found; it just wants to skip that VG. (It may be not found * if it was removed between creating the list of all VGs and then * processing each VG. */ if (only_this_vgname) read_flags |= READ_WARN_INCONSISTENT; else read_flags |= READ_OK_NOTFOUND; /* Disable error in vg_read so we can print it from ignore_vg. */ cmd->vg_read_print_access_error = 0; dm_list_init(&arg_tags); dm_list_init(&arg_pvnames); dm_list_init(&arg_devices); dm_list_init(&arg_missed); dm_list_init(&all_vgnameids); dm_list_init(&all_devices); /* * Create two lists from argv: * arg_pvnames: pvs explicitly named in argv * arg_tags: tags explicitly named in argv * * Then convert arg_pvnames, which are free-form, user-specified, * names/paths into arg_devices which can be used to match below. */ if ((ret = _get_arg_pvnames(cmd, argc, argv, &arg_pvnames, &arg_tags)) != ECMD_PROCESSED) { ret_max = ret; goto_out; } if ((cmd->cname->flags & DISALLOW_TAG_ARGS) && !dm_list_empty(&arg_tags)) { log_error("Tags cannot be used with this command."); return ECMD_FAILED; } orphans_locked = lvmcache_vgname_is_locked(VG_ORPHANS); process_all_pvs = dm_list_empty(&arg_pvnames) && dm_list_empty(&arg_tags); process_all_devices = process_all_pvs && (cmd->cname->flags & ENABLE_ALL_DEVS) && all_is_set; /* Needed for a current listing of the global VG namespace. */ if (!only_this_vgname && !lockd_gl(cmd, "sh", 0)) { ret_max = ECMD_FAILED; goto_out; } /* * This full scan would be done by _get_all_devices() if * it were not done here first. It's called here first * so that get_vgnameids() will look at any new devices. * When orphans is already locked, these steps are done * before process_each_pv is called. */ if (!trust_cache() && !orphans_locked) { log_debug("Scanning for available devices"); lvmcache_destroy(cmd, 1, 0); dev_cache_full_scan(cmd->full_filter); } if (!get_vgnameids(cmd, &all_vgnameids, only_this_vgname, 1)) { ret_max = ret; goto_out; } /* * If the caller wants to process all devices (not just PVs), then all PVs * from all VGs are processed first, removing them from all_devices. Then * any devs remaining in all_devices are processed. */ if ((ret = _get_all_devices(cmd, &all_devices) != ECMD_PROCESSED)) { ret_max = ret; goto_out; } if ((ret = _get_arg_devices(cmd, &arg_pvnames, &arg_devices)) != ECMD_PROCESSED) /* get_arg_devices reports the error for any PV names not found. */ ret_max = ECMD_FAILED; ret = _process_pvs_in_vgs(cmd, read_flags, &all_vgnameids, &all_devices, &arg_devices, &arg_tags, process_all_pvs, process_all_devices, handle, process_single_pv); if (ret != ECMD_PROCESSED) stack; if (ret > ret_max) ret_max = ret; /* * Process the list of unused duplicate devs so they can be shown by * report/display commands. These are the devices that were not chosen * to be used in lvmcache because another device with the same PVID was * preferred. The unused duplicate devs are not seen by * _process_pvs_in_vgs, which only sees the preferred device for the * PVID. * * The main purpose in reporting/displaying the unused duplicate PVs * here is so that they do not appear to be unused/free devices or * orphans. * * We do not allow modifying the unused duplicate PVs. To modify a * non-preferred duplicate PV, e.g. pvchange -u, a filter needs to be * used with the command to exclude the other devices with the same * PVID. This results in the command seeing only the one device with * the PVID and allows it to be changed. (If the duplicates actually * represent the same underlying storage, these precautions are * unnecessary, but lvm can't tell when the duplicates are different * paths to the same storage or different underlying storage.) * * Even the preferred duplicate PV in lvmcache is limitted from being * modified (by allow_changes_with_duplicate_pvs setting), because lvm * cannot be sure that the preferred duplicate device is the correct one, * e.g. if a VG has two PVs, and both PVs are cloned, lvm might prefer * one of the original PVs and one of the cloned PVs, pairing them * together as the VG. Any changes on the VG or PVs in that state would * end up changing one of the original PVs and one of the cloned PVs. * * vgimportclone of the two cloned PVs changes their PV UUIDs and gives * them a new VG name. */ ret = _process_duplicate_pvs(cmd, &all_devices, &arg_devices, process_all_devices, handle, process_single_pv); if (ret != ECMD_PROCESSED) stack; if (ret > ret_max) ret_max = ret; /* * If the orphans lock was held, there shouldn't be missed devices. If * there were, we cannot clear the cache while holding the orphans lock * anyway. */ if (orphans_locked) goto skip_missed; /* * Some PVs may have been missed by the first search if another command * moved them at the same time. Repeat the search for only the * specific PVs missed. lvmcache needs clearing for a fresh search. * * If missed PVs are found in this repeated search, they are removed * from the arg_missed list, but they also need to be removed from the * arg_devices list, otherwise the check at the end will produce an * error, thinking they weren't found. This is the reason for saving * and comparing the original arg_missed list. */ if (!process_all_pvs) _get_missed_pvs(cmd, &arg_devices, &arg_missed); else _get_missed_pvs(cmd, &all_devices, &arg_missed); if (!dm_list_empty(&arg_missed)) { struct dm_list arg_missed_orig; dm_list_init(&arg_missed_orig); _device_list_copy(cmd, &arg_missed, &arg_missed_orig); log_verbose("Some PVs were not found in first search, retrying."); lvmcache_destroy(cmd, 0, 0); if (!lvmcache_init()) { log_error("Failed to initalize lvm cache."); ret_max = ECMD_FAILED; goto out; } lvmcache_seed_infos_from_lvmetad(cmd); ret = _process_pvs_in_vgs(cmd, read_flags, &all_vgnameids, &all_devices, &arg_missed, &arg_tags, 0, 0, handle, process_single_pv); if (ret != ECMD_PROCESSED) stack; if (ret > ret_max) ret_max = ret; /* Devices removed from arg_missed are removed from arg_devices. */ dm_list_iterate_items(dil, &arg_missed_orig) { if (!_device_list_find_dev(&arg_missed, dil->dev)) _device_list_remove(&arg_devices, dil->dev); } } skip_missed: dm_list_iterate_items(dil, &arg_devices) { log_error("Failed to find physical volume \"%s\".", dev_name(dil->dev)); ret_max = ECMD_FAILED; } if (!process_all_devices) goto out; ret = _process_device_list(cmd, &all_devices, handle, process_single_pv); if (ret != ECMD_PROCESSED) stack; if (ret > ret_max) ret_max = ret; out: log_restore_report_state(saved_log_report_state); return ret_max; } int process_each_pv_in_vg(struct cmd_context *cmd, struct volume_group *vg, struct processing_handle *handle, process_single_pv_fn_t process_single_pv) { log_report_t saved_log_report_state = log_get_report_state(); char pv_uuid[64] __attribute__((aligned(8))); char vg_uuid[64] __attribute__((aligned(8))); int whole_selected = 0; int ret_max = ECMD_PROCESSED; int ret; int do_report_ret_code = 1; struct pv_list *pvl; log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_PV); vg_uuid[0] = '\0'; if (!id_write_format(&vg->id, vg_uuid, sizeof(vg_uuid))) stack; if (!is_orphan_vg(vg->name)) log_set_report_object_group_and_group_id(vg->name, vg_uuid); dm_list_iterate_items(pvl, &vg->pvs) { pv_uuid[0] = '\0'; if (!id_write_format(&pvl->pv->id, pv_uuid, sizeof(pv_uuid))) stack; log_set_report_object_name_and_id(pv_dev_name(pvl->pv), pv_uuid); if (sigint_caught()) { ret_max = ECMD_FAILED; goto_out; } ret = process_single_pv(cmd, vg, pvl->pv, handle); _update_selection_result(handle, &whole_selected); if (ret != ECMD_PROCESSED) stack; report_log_ret_code(ret); if (ret > ret_max) ret_max = ret; log_set_report_object_name_and_id(NULL, NULL); } _set_final_selection_result(handle, whole_selected); do_report_ret_code = 0; out: if (do_report_ret_code) report_log_ret_code(ret_max); log_restore_report_state(saved_log_report_state); return ret_max; } int lvremove_single(struct cmd_context *cmd, struct logical_volume *lv, struct processing_handle *handle __attribute__((unused))) { /* * Single force is equivalent to single --yes * Even multiple --yes are equivalent to single --force * When we require -ff it cannot be replaced with -f -y */ force_t force = (force_t) arg_count(cmd, force_ARG) ? : (arg_is_set(cmd, yes_ARG) ? DONT_PROMPT : PROMPT); if (!lv_remove_with_dependencies(cmd, lv, force, 0)) return_ECMD_FAILED; return ECMD_PROCESSED; } int pvcreate_params_from_args(struct cmd_context *cmd, struct pvcreate_params *pp) { pp->yes = arg_count(cmd, yes_ARG); pp->force = (force_t) arg_count(cmd, force_ARG); if (arg_int_value(cmd, labelsector_ARG, 0) >= LABEL_SCAN_SECTORS) { log_error("labelsector must be less than %lu.", LABEL_SCAN_SECTORS); return 0; } else { pp->pva.label_sector = arg_int64_value(cmd, labelsector_ARG, DEFAULT_LABELSECTOR); } if (!(cmd->fmt->features & FMT_MDAS) && (arg_is_set(cmd, pvmetadatacopies_ARG) || arg_is_set(cmd, metadatasize_ARG) || arg_is_set(cmd, dataalignment_ARG) || arg_is_set(cmd, dataalignmentoffset_ARG))) { log_error("Metadata and data alignment parameters only " "apply to text format."); return 0; } if (!(cmd->fmt->features & FMT_BAS) && arg_is_set(cmd, bootloaderareasize_ARG)) { log_error("Bootloader area parameters only " "apply to text format."); return 0; } if (arg_is_set(cmd, metadataignore_ARG)) pp->pva.metadataignore = arg_int_value(cmd, metadataignore_ARG, DEFAULT_PVMETADATAIGNORE); else pp->pva.metadataignore = find_config_tree_bool(cmd, metadata_pvmetadataignore_CFG, NULL); if (arg_is_set(cmd, pvmetadatacopies_ARG) && !arg_int_value(cmd, pvmetadatacopies_ARG, -1) && pp->pva.metadataignore) { log_error("metadataignore only applies to metadatacopies > 0"); return 0; } pp->zero = arg_int_value(cmd, zero_ARG, 1); if (arg_sign_value(cmd, dataalignment_ARG, SIGN_NONE) == SIGN_MINUS) { log_error("Physical volume data alignment may not be negative."); return 0; } pp->pva.data_alignment = arg_uint64_value(cmd, dataalignment_ARG, UINT64_C(0)); if (pp->pva.data_alignment > UINT32_MAX) { log_error("Physical volume data alignment is too big."); return 0; } if (arg_sign_value(cmd, dataalignmentoffset_ARG, SIGN_NONE) == SIGN_MINUS) { log_error("Physical volume data alignment offset may not be negative"); return 0; } pp->pva.data_alignment_offset = arg_uint64_value(cmd, dataalignmentoffset_ARG, UINT64_C(0)); if (pp->pva.data_alignment_offset > UINT32_MAX) { log_error("Physical volume data alignment offset is too big."); return 0; } if ((pp->pva.data_alignment + pp->pva.data_alignment_offset) && (pp->pva.pe_start != PV_PE_START_CALC)) { if ((pp->pva.data_alignment ? pp->pva.pe_start % pp->pva.data_alignment : pp->pva.pe_start) != pp->pva.data_alignment_offset) { log_warn("WARNING: Ignoring data alignment %s" " incompatible with restored pe_start value %s)", display_size(cmd, pp->pva.data_alignment + pp->pva.data_alignment_offset), display_size(cmd, pp->pva.pe_start)); pp->pva.data_alignment = 0; pp->pva.data_alignment_offset = 0; } } if (arg_sign_value(cmd, metadatasize_ARG, SIGN_NONE) == SIGN_MINUS) { log_error("Metadata size may not be negative."); return 0; } if (arg_sign_value(cmd, bootloaderareasize_ARG, SIGN_NONE) == SIGN_MINUS) { log_error("Bootloader area size may not be negative."); return 0; } pp->pva.pvmetadatasize = arg_uint64_value(cmd, metadatasize_ARG, UINT64_C(0)); if (!pp->pva.pvmetadatasize) pp->pva.pvmetadatasize = find_config_tree_int(cmd, metadata_pvmetadatasize_CFG, NULL); pp->pva.pvmetadatacopies = arg_int_value(cmd, pvmetadatacopies_ARG, -1); if (pp->pva.pvmetadatacopies < 0) pp->pva.pvmetadatacopies = find_config_tree_int(cmd, metadata_pvmetadatacopies_CFG, NULL); pp->pva.ba_size = arg_uint64_value(cmd, bootloaderareasize_ARG, pp->pva.ba_size); return 1; } enum { PROMPT_PVCREATE_PV_IN_VG = 1, PROMPT_PVREMOVE_PV_IN_VG = 2, }; enum { PROMPT_ANSWER_NO = 1, PROMPT_ANSWER_YES = 2 }; /* * When a prompt entry is created, save any strings or info * in this struct that are needed for the prompt messages. * The VG/PV structs are not be available when the prompt * is run. */ struct pvcreate_prompt { struct dm_list list; uint32_t type; const char *pv_name; const char *vg_name; struct device *dev; int answer; unsigned abort_command : 1; unsigned vg_name_unknown : 1; }; struct pvcreate_device { struct dm_list list; const char *name; struct device *dev; char pvid[ID_LEN + 1]; const char *vg_name; int wiped; unsigned is_not_pv : 1; /* device is not a PV */ unsigned is_orphan_pv : 1; /* device is an orphan PV */ unsigned is_vg_pv : 1; /* device is a PV used in a VG */ unsigned is_used_unknown_pv : 1; /* device is a PV used in an unknown VG */ }; /* * If a PV is in a VG, and pvcreate or pvremove is run on it: * * pvcreate|pvremove -f : fails * pvcreate|pvremove -y : fails * pvcreate|pvremove -f -y : fails * pvcreate|pvremove -ff : get y/n prompt * pvcreate|pvremove -ff -y : succeeds * * FIXME: there are a lot of various phrasings used depending on the * command and specific case. Find some similar way to phrase these. */ static void _check_pvcreate_prompt(struct cmd_context *cmd, struct pvcreate_params *pp, struct pvcreate_prompt *prompt, int ask) { const char *vgname = prompt->vg_name ? prompt->vg_name : ""; const char *pvname = prompt->pv_name; /* The VG name can be unknown when the PV is used but metadata is not available */ if (prompt->type == PROMPT_PVCREATE_PV_IN_VG) { if (pp->force != DONT_PROMPT_OVERRIDE) { prompt->answer = PROMPT_ANSWER_NO; if (prompt->vg_name_unknown) { log_error("PV %s is used by a VG but its metadata is missing.", pvname); log_error("Can't initialize PV '%s' without -ff.", pvname); } else if (!strcmp(command_name(cmd), "pvcreate")) { log_error("Can't initialize physical volume \"%s\" of volume group \"%s\" without -ff", pvname, vgname); } else { log_error("Physical volume '%s' is already in volume group '%s'", pvname, vgname); log_error("Unable to add physical volume '%s' to volume group '%s'", pvname, vgname); } } else if (pp->yes) { prompt->answer = PROMPT_ANSWER_YES; } else if (ask) { if (yes_no_prompt("Really INITIALIZE physical volume \"%s\" of volume group \"%s\" [y/n]? ", pvname, vgname) == 'n') { prompt->answer = PROMPT_ANSWER_NO; log_error("%s: physical volume not initialized", pvname); } else { prompt->answer = PROMPT_ANSWER_YES; log_warn("WARNING: Forcing physical volume creation on %s of volume group \"%s\"", pvname, vgname); } } } else if (prompt->type == PROMPT_PVREMOVE_PV_IN_VG) { if (pp->force != DONT_PROMPT_OVERRIDE) { prompt->answer = PROMPT_ANSWER_NO; if (prompt->vg_name_unknown) log_error("PV %s is used by a VG but its metadata is missing.", pvname); else log_error("PV %s is used by VG %s so please use vgreduce first.", pvname, vgname); log_error("(If you are certain you need pvremove, then confirm by using --force twice.)"); } else if (pp->yes) { log_warn("WARNING: PV %s is used by VG %s", pvname, vgname); prompt->answer = PROMPT_ANSWER_YES; } else if (ask) { log_warn("WARNING: PV %s is used by VG %s", pvname, vgname); if (yes_no_prompt("Really WIPE LABELS from physical volume \"%s\" of volume group \"%s\" [y/n]? ", pvname, vgname) == 'n') { prompt->answer = PROMPT_ANSWER_NO; log_error("%s: physical volume label not removed", pvname); } else { prompt->answer = PROMPT_ANSWER_YES; } } if ((prompt->answer == PROMPT_ANSWER_YES) && (pp->force == DONT_PROMPT_OVERRIDE)) log_warn("WARNING: Wiping physical volume label from %s of volume group \"%s\"", pvname, vgname); } } static struct pvcreate_device *_pvcreate_list_find_dev(struct dm_list *devices, struct device *dev) { struct pvcreate_device *pd; dm_list_iterate_items(pd, devices) { if (pd->dev == dev) return pd; } return NULL; } static struct pvcreate_device *_pvcreate_list_find_name(struct dm_list *devices, const char *name) { struct pvcreate_device *pd; dm_list_iterate_items(pd, devices) { if (!strcmp(pd->name, name)) return pd; } return NULL; } /* * If this function decides that a arg_devices entry cannot be used, but the * command might be able to continue without it, then it moves that entry from * arg_devices to arg_fail. * * If this function decides that an arg_devices entry could be used (possibly * requiring a prompt), then it moves the entry from arg_devices to arg_process. * * Any arg_devices entries that are not moved to arg_fail or arg_process were * not found. The caller will decide if the command can continue if any * arg_devices entries were not found, or if any were moved to arg_fail. * * This check does not need to look at PVs in foreign, shared or clustered VGs. * If pvcreate/vgcreate/vgextend specifies a device in a * foreign/shared/clustered VG, that VG will not be processed by this function, * and the arg will be reported as not found. */ static int _pvcreate_check_single(struct cmd_context *cmd, struct volume_group *vg, struct physical_volume *pv, struct processing_handle *handle) { struct pvcreate_params *pp = (struct pvcreate_params *) handle->custom_handle; struct pvcreate_device *pd; struct pvcreate_prompt *prompt; int found = 0; if (!pv->dev) return 1; /* * Check if one of the command args in arg_devices * matches this device. */ dm_list_iterate_items(pd, &pp->arg_devices) { if (pd->dev != pv->dev) continue; if (pv->dev->pvid[0]) strncpy(pd->pvid, pv->dev->pvid, ID_LEN); found = 1; break; } /* * Check if the uuid specified for the new PV is used by another PV. */ if (!found && pv->dev && pp->uuid_str && id_equal(&pv->id, &pp->pva.id)) { log_error("UUID %s already in use on \"%s\".", pp->uuid_str, pv_dev_name(pv)); pp->check_failed = 1; return 0; } if (!found) return 1; log_debug("Checking pvcreate arg %s which has existing PVID: %.32s.", pv_dev_name(pv), pv->dev->pvid[0] ? pv->dev->pvid : ""); /* * This test will fail if the device belongs to an MD array. */ if (!dev_test_excl(pv->dev)) { /* FIXME Detect whether device-mapper itself is still using it */ log_error("Can't open %s exclusively. Mounted filesystem?", pv_dev_name(pv)); dm_list_move(&pp->arg_fail, &pd->list); return 1; } /* * Don't allow using a device with duplicates. */ if (lvmcache_pvid_in_unchosen_duplicates(pd->dev->pvid)) { log_error("Cannot use device %s with duplicates.", pd->name); dm_list_move(&pp->arg_fail, &pd->list); return 1; } /* * What kind of device is this: an orphan PV, an uninitialized/unused * device, a PV used in a VG. */ if (vg && !is_orphan_vg(vg->name)) { /* Device is a PV used in a VG. */ log_debug("Found pvcreate arg %s: pv is used in %s.", pd->name, vg->name); pd->is_vg_pv = 1; pd->vg_name = dm_pool_strdup(cmd->mem, vg->name); } else if (vg && is_orphan_vg(vg->name)) { if (is_used_pv(pv)) { /* Device is used in an unknown VG. */ log_debug("Found pvcreate arg %s: PV is used in unknown VG.", pd->name); pd->is_used_unknown_pv = 1; } else { /* Device is an orphan PV. */ log_debug("Found pvcreate arg %s: PV is orphan in %s.", pd->name, vg->name); pd->is_orphan_pv = 1; } if (!strcmp(vg->name, FMT_LVM1_ORPHAN_VG_NAME)) pp->orphan_vg_name = FMT_LVM1_ORPHAN_VG_NAME; else pp->orphan_vg_name = FMT_TEXT_ORPHAN_VG_NAME; } else { log_debug("Found pvcreate arg %s: device is not a PV.", pd->name); /* Device is not a PV. */ pd->is_not_pv = 1; } /* * pvcreate is being run on this device, and it's not a PV, * or is an orphan PV. Neither case requires a prompt. */ if (pd->is_orphan_pv || pd->is_not_pv) { pd->dev = pv->dev; dm_list_move(&pp->arg_process, &pd->list); return 1; } /* * pvcreate is being run on this device, but the device is already * a PV in a VG. A prompt or force option is required to use it. */ if (!(prompt = dm_pool_zalloc(cmd->mem, sizeof(*prompt)))) { log_error("prompt alloc failed."); pp->check_failed = 1; return 0; } prompt->dev = pd->dev; prompt->type = PROMPT_PVCREATE_PV_IN_VG; prompt->pv_name = dm_pool_strdup(cmd->mem, pd->name); if (pd->is_used_unknown_pv) prompt->vg_name_unknown = 1; else prompt->vg_name = dm_pool_strdup(cmd->mem, vg->name); dm_list_add(&pp->prompts, &prompt->list); pd->dev = pv->dev; dm_list_move(&pp->arg_process, &pd->list); return 1; } /* * This repeats the first check -- devices should be found, and should not have * changed since the first check. If they were changed/used while the orphans * lock was not held (during prompting), then they can't be used any more and * are moved to arg_fail. If they are not found by this loop, that also * disqualifies them from being used. Each arg_confirm entry that's found and * is ok, is moved to arg_process. Those not found will remain in arg_confirm. * * This check does not need to look in foreign/shared/clustered VGs. If a * device from arg_confirm was used in a foreign/shared/clustered VG during the * prompts, then it will not be found during this check. */ static int _pv_confirm_single(struct cmd_context *cmd, struct volume_group *vg, struct physical_volume *pv, struct processing_handle *handle) { struct pvcreate_params *pp = (struct pvcreate_params *) handle->custom_handle; struct pvcreate_device *pd; int found = 0; dm_list_iterate_items(pd, &pp->arg_confirm) { if (pd->dev != pv->dev) continue; found = 1; break; } if (!found) return 1; /* Repeat the same from check_single. */ if (!dev_test_excl(pv->dev)) { /* FIXME Detect whether device-mapper itself is still using it */ log_error("Can't open %s exclusively. Mounted filesystem?", pv_dev_name(pv)); goto fail; } /* * What kind of device is this: an orphan PV, an uninitialized/unused * device, a PV used in a VG. */ if (vg && !is_orphan_vg(vg->name)) { /* Device is a PV used in a VG. */ if (pd->is_orphan_pv || pd->is_not_pv || pd->is_used_unknown_pv) { /* In check_single it was an orphan or unused. */ goto fail; } if (pd->is_vg_pv && pd->vg_name && strcmp(pd->vg_name, vg->name)) { /* In check_single it was in a different VG. */ goto fail; } } else if (is_orphan(pv)) { /* Device is an orphan PV. */ if (pd->is_not_pv) { /* In check_single it was not a PV. */ goto fail; } if (pd->is_vg_pv) { /* In check_single it was in a VG. */ goto fail; } if (is_used_pv(pv) != pd->is_used_unknown_pv) { /* In check_single it was different. */ goto fail; } } else { /* Device is not a PV. */ if (pd->is_orphan_pv || pd->is_used_unknown_pv) { /* In check_single it was an orphan PV. */ goto fail; } if (pd->is_vg_pv) { /* In check_single it was in a VG. */ goto fail; } } /* Device is unchanged from check_single. */ dm_list_move(&pp->arg_process, &pd->list); return 1; fail: log_error("Cannot use device %s: it changed during prompt.", pd->name); dm_list_move(&pp->arg_fail, &pd->list); return 1; } static int _pvremove_check_single(struct cmd_context *cmd, struct volume_group *vg, struct physical_volume *pv, struct processing_handle *handle) { struct pvcreate_params *pp = (struct pvcreate_params *) handle->custom_handle; struct pvcreate_device *pd; struct pvcreate_prompt *prompt; struct label *label; int found = 0; if (!pv->dev) return 1; /* * Check if one of the command args in arg_devices * matches this device. */ dm_list_iterate_items(pd, &pp->arg_devices) { if (pd->dev != pv->dev) continue; if (pv->dev->pvid[0]) strncpy(pd->pvid, pv->dev->pvid, ID_LEN); found = 1; break; } if (!found) return 1; log_debug("Checking device %s for pvremove %.32s.", pv_dev_name(pv), pv->dev->pvid[0] ? pv->dev->pvid : ""); /* * This test will fail if the device belongs to an MD array. */ if (!dev_test_excl(pv->dev)) { /* FIXME Detect whether device-mapper itself is still using it */ log_error("Can't open %s exclusively. Mounted filesystem?", pv_dev_name(pv)); dm_list_move(&pp->arg_fail, &pd->list); return 1; } /* * Is there a pv here already? * If not, this is an error unless you used -f. */ if (!label_read(pd->dev, &label, 0)) { if (pp->force) { dm_list_move(&pp->arg_process, &pd->list); return 1; } else { log_error("No PV label found on %s.", pd->name); dm_list_move(&pp->arg_fail, &pd->list); return 1; } } /* * What kind of device is this: an orphan PV, an uninitialized/unused * device, a PV used in a VG. */ if (vg && !is_orphan_vg(vg->name)) { /* Device is a PV used in a VG. */ log_debug("Found pvremove arg %s: pv is used in %s.", pd->name, vg->name); pd->is_vg_pv = 1; pd->vg_name = dm_pool_strdup(cmd->mem, vg->name); } else if (vg && is_orphan_vg(vg->name)) { if (is_used_pv(pv)) { /* Device is used in an unknown VG. */ log_debug("Found pvremove arg %s: pv is used in unknown VG.", pd->name); pd->is_used_unknown_pv = 1; } else { /* Device is an orphan PV. */ log_debug("Found pvremove arg %s: pv is orphan in %s.", pd->name, vg->name); pd->is_orphan_pv = 1; } if (!strcmp(vg->name, FMT_LVM1_ORPHAN_VG_NAME)) pp->orphan_vg_name = FMT_LVM1_ORPHAN_VG_NAME; else pp->orphan_vg_name = FMT_TEXT_ORPHAN_VG_NAME; } else { log_debug("Found pvremove arg %s: device is not a PV.", pd->name); /* Device is not a PV. */ pd->is_not_pv = 1; } if (pd->is_not_pv) { pd->dev = pv->dev; log_error("No PV found on device %s.", pd->name); dm_list_move(&pp->arg_fail, &pd->list); return 1; } /* * pvremove is being run on this device, and it's not a PV, * or is an orphan PV. Neither case requires a prompt. */ if (pd->is_orphan_pv) { pd->dev = pv->dev; dm_list_move(&pp->arg_process, &pd->list); return 1; } /* * pvremove is being run on this device, but the device is in a VG. * A prompt or force option is required to use it. */ if (!(prompt = dm_pool_zalloc(cmd->mem, sizeof(*prompt)))) { log_error("prompt alloc failed."); pp->check_failed = 1; return 0; } prompt->dev = pd->dev; prompt->pv_name = dm_pool_strdup(cmd->mem, pd->name); if (pd->is_used_unknown_pv) prompt->vg_name_unknown = 1; else prompt->vg_name = dm_pool_strdup(cmd->mem, vg->name); prompt->type = PROMPT_PVREMOVE_PV_IN_VG; dm_list_add(&pp->prompts, &prompt->list); pd->dev = pv->dev; dm_list_move(&pp->arg_process, &pd->list); return 1; } /* * This can be used by pvcreate, vgcreate and vgextend to create PVs. The * callers need to set up the pvcreate_each_params structure based on command * line args. This includes the pv_names field which specifies the devices to * create PVs on. * * This uses process_each_pv() and should be called from a high level in the * command -- the same level at which other instances of process_each are * called. * * This function returns 0 (failed) if the caller requires all specified * devices to be created, and any of those devices are not found, or any of * them cannot be created. * * This function returns 1 (success) if the caller requires all specified * devices to be created, and all are created, or if the caller does not * require all specified devices to be created and one or more were created. * * When this function returns 1 (success), it returns to the caller with the * VG_ORPHANS write lock held. */ int pvcreate_each_device(struct cmd_context *cmd, struct processing_handle *handle, struct pvcreate_params *pp) { struct pvcreate_device *pd, *pd2; struct pvcreate_prompt *prompt, *prompt2; struct physical_volume *pv; struct volume_group *orphan_vg; struct lvmcache_info *info; struct dm_list remove_duplicates; struct dm_list arg_sort; struct pv_list *pvl; struct pv_list *vgpvl; const char *pv_name; int consistent = 0; int must_use_all = (cmd->cname->flags & MUST_USE_ALL_ARGS); int found; unsigned i; set_pv_notify(cmd); dm_list_init(&remove_duplicates); dm_list_init(&arg_sort); handle->custom_handle = pp; /* * Create a list entry for each name arg. */ for (i = 0; i < pp->pv_count; i++) { dm_unescape_colons_and_at_signs(pp->pv_names[i], NULL, NULL); pv_name = pp->pv_names[i]; if (!(pd = dm_pool_zalloc(cmd->mem, sizeof(*pd)))) { log_error("alloc failed."); return 0; } if (!(pd->name = dm_pool_strdup(cmd->mem, pv_name))) { log_error("strdup failed."); return 0; } dm_list_add(&pp->arg_devices, &pd->list); } /* * This function holds the orphans lock while reading VGs to look for * devices. This means the orphans lock is held while VG locks are * acquired, which is against lvmcache lock ordering rules, so disable * the lvmcache lock ordering checks. */ lvmcache_lock_ordering(0); /* * Clear the cache before acquiring the orphan lock. (Clearing the * cache with locks held is an error.) We want the orphan lock * acquired before process_each_pv. If the orphan lock is not held * when process_each_pv is called, then process_each_pv clears the * cache. */ lvmcache_destroy(cmd, 1, 0); /* * If no prompts require a user response, this orphan lock is held * throughout, and pvcreate_each_device() returns with it held so that * vgcreate/vgextend use the PVs created here to add to a VG. */ if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE, NULL)) { log_error("Can't get lock for orphan PVs."); return 0; } dev_cache_full_scan(cmd->full_filter); /* * Translate arg names into struct device's. */ dm_list_iterate_items(pd, &pp->arg_devices) pd->dev = dev_cache_get(pd->name, cmd->full_filter); /* * Use process_each_pv to search all existing PVs and devices. * * This is a slightly different way to use process_each_pv, because the * command args (arg_devices) are not being processed directly by * process_each_pv (argc and argv are not passed). Instead, * process_each_pv is processing all existing PVs and devices, and the * single function is matching each of those against the command args * (arg_devices). * * If an arg_devices entry is found during process_each_pv, it's moved * to arg_process if it can be used, or arg_fail if it cannot be used. * If it's added to arg_process but needs a prompt or force option, then * a corresponding prompt entry is added to pp->prompts. */ process_each_pv(cmd, 0, NULL, NULL, 1, 0, handle, pp->is_remove ? _pvremove_check_single : _pvcreate_check_single); /* * A fatal error was found while checking. */ if (pp->check_failed) goto_bad; /* * Special case: pvremove -ff is allowed to clear a duplicate device in * the unchosen duplicates list. PVs in the unchosen duplicates list * won't be found by normal process_each searches -- they are not in * lvmcache and can't be processed normally. We save them here and * erase them below without going through the normal processing code. */ if (pp->is_remove && (pp->force == DONT_PROMPT_OVERRIDE) && !dm_list_empty(&pp->arg_devices) && lvmcache_found_duplicate_pvs()) { dm_list_iterate_items_safe(pd, pd2, &pp->arg_devices) { if (lvmcache_dev_is_unchosen_duplicate(pd->dev)) { log_debug("Found pvremove arg %s: device is a duplicate.", pd->name); dm_list_move(&remove_duplicates, &pd->list); } } } /* * Check if all arg_devices were found by process_each_pv. */ dm_list_iterate_items(pd, &pp->arg_devices) log_error("Device %s not found (or ignored by filtering).", pd->name); /* * Can the command continue if some specified devices were not found? */ if (!dm_list_empty(&pp->arg_devices) && must_use_all) goto_bad; /* * Can the command continue if some specified devices cannot be used? */ if (!dm_list_empty(&pp->arg_fail) && must_use_all) goto_bad; /* * The command cannot continue if there are no devices to process. */ if (dm_list_empty(&pp->arg_process) && dm_list_empty(&remove_duplicates)) { log_debug("No devices to process."); goto bad; } /* * Clear any prompts that have answers without asking the user. */ dm_list_iterate_items_safe(prompt, prompt2, &pp->prompts) { _check_pvcreate_prompt(cmd, pp, prompt, 0); switch (prompt->answer) { case PROMPT_ANSWER_YES: /* The PV can be used, leave it on arg_process. */ dm_list_del(&prompt->list); break; case PROMPT_ANSWER_NO: /* The PV cannot be used, remove it from arg_process. */ if ((pd = _pvcreate_list_find_dev(&pp->arg_process, prompt->dev))) dm_list_move(&pp->arg_fail, &pd->list); dm_list_del(&prompt->list); break; } } if (!dm_list_empty(&pp->arg_fail) && must_use_all) goto_bad; /* * If no remaining prompts need a user response, then keep orphans * locked and go directly to the create steps. */ if (dm_list_empty(&pp->prompts)) goto do_command; /* * Prompts require asking the user, so release the orphans lock, ask * the questions, reacquire the orphans lock, verify that the PVs were * not used during the questions, then do the create steps. */ unlock_vg(cmd, NULL, VG_ORPHANS); /* * Process prompts that require asking the user. The orphans lock is * not held, so there's no harm in waiting for a user to respond. */ dm_list_iterate_items_safe(prompt, prompt2, &pp->prompts) { _check_pvcreate_prompt(cmd, pp, prompt, 1); switch (prompt->answer) { case PROMPT_ANSWER_YES: /* The PV can be used, leave it on arg_process. */ dm_list_del(&prompt->list); break; case PROMPT_ANSWER_NO: /* The PV cannot be used, remove it from arg_process. */ if ((pd = _pvcreate_list_find_dev(&pp->arg_process, prompt->dev))) dm_list_move(&pp->arg_fail, &pd->list); dm_list_del(&prompt->list); break; } if (!dm_list_empty(&pp->arg_fail) && must_use_all) goto_out; if (sigint_caught()) goto_out; if (prompt->abort_command) goto_out; } /* * Clear the cache, reacquire the orphans write lock, then check again * that the devices can still be used. If the second loop finds them * changed, or can't find them any more, then they aren't used. * Clear the cache here before locking orphans, since it won't be * done by process_each_pv with orphans already locked. */ lvmcache_destroy(cmd, 1, 0); if (!lock_vol(cmd, VG_ORPHANS, LCK_VG_WRITE, NULL)) { log_error("Can't get lock for orphan PVs."); goto out; } /* * The device args began on the arg_devices list, then the first check * loop moved those entries to arg_process as they were found. Devices * not found during the first loop are not being used, and remain on * arg_devices. * * Now, the arg_process entries are moved to arg_confirm, and the second * check loop moves them back to arg_process as they are found and are * unchanged. Like the first loop, the second loop moves an entry to * arg_fail if it cannot be used. After the second loop, any devices * remaining on arg_confirm were not found and are not used. */ dm_list_splice(&pp->arg_confirm, &pp->arg_process); process_each_pv(cmd, 0, NULL, NULL, 1, 0, handle, _pv_confirm_single); dm_list_iterate_items(pd, &pp->arg_confirm) log_error("Device %s not found (or ignored by filtering).", pd->name); /* Some devices were not found during the second check. */ if (!dm_list_empty(&pp->arg_confirm) && must_use_all) goto_bad; /* Some devices changed during the second check. */ if (!dm_list_empty(&pp->arg_fail) && must_use_all) goto_bad; if (dm_list_empty(&pp->arg_process)) { log_debug("No devices to process."); goto bad; } do_command: /* * Reorder arg_process entries to match the original order of args. */ dm_list_splice(&arg_sort, &pp->arg_process); for (i = 0; i < pp->pv_count; i++) { if ((pd = _pvcreate_list_find_name(&arg_sort, pp->pv_names[i]))) dm_list_move(&pp->arg_process, &pd->list); } if (pp->is_remove) dm_list_splice(&pp->arg_remove, &pp->arg_process); else dm_list_splice(&pp->arg_create, &pp->arg_process); /* * Wipe signatures on devices being created. */ dm_list_iterate_items_safe(pd, pd2, &pp->arg_create) { log_verbose("Wiping signatures on new PV %s.", pd->name); if (!wipe_known_signatures(cmd, pd->dev, pd->name, TYPE_LVM1_MEMBER | TYPE_LVM2_MEMBER, 0, pp->yes, pp->force, &pd->wiped)) { dm_list_move(&pp->arg_fail, &pd->list); } if (sigint_caught()) goto_bad; } if (!dm_list_empty(&pp->arg_fail) && must_use_all) goto_bad; /* * Find existing orphan PVs that vgcreate or vgextend want to use. * "preserve_existing" means that the command wants to use existing PVs * and not recreate a new PV on top of an existing PV. */ if (pp->preserve_existing && pp->orphan_vg_name) { log_debug("Using existing orphan PVs in %s.", pp->orphan_vg_name); if (!(orphan_vg = vg_read_internal(cmd, pp->orphan_vg_name, NULL, 0, &consistent))) { log_error("Cannot read orphans VG %s.", pp->orphan_vg_name); goto bad; } dm_list_iterate_items_safe(pd, pd2, &pp->arg_create) { if (!pd->is_orphan_pv) continue; if (!(pvl = dm_pool_alloc(cmd->mem, sizeof(*pvl)))) { log_error("alloc pvl failed."); dm_list_move(&pp->arg_fail, &pd->list); continue; } found = 0; dm_list_iterate_items(vgpvl, &orphan_vg->pvs) { if (vgpvl->pv->dev == pd->dev) { found = 1; break; } } if (found) { log_debug("Using existing orphan PV %s.", pv_dev_name(vgpvl->pv)); pvl->pv = vgpvl->pv; dm_list_add(&pp->pvs, &pvl->list); } else { log_error("Failed to find PV %s", pd->name); dm_list_move(&pp->arg_fail, &pd->list); } } } /* * Create PVs on devices. Either create a new PV on top of an existing * one (e.g. for pvcreate), or create a new PV on a device that is not * a PV. */ dm_list_iterate_items_safe(pd, pd2, &pp->arg_create) { /* Using existing orphan PVs is covered above. */ if (pp->preserve_existing && pd->is_orphan_pv) continue; if (!dm_list_empty(&pp->arg_fail) && must_use_all) break; if (!(pvl = dm_pool_alloc(cmd->mem, sizeof(*pvl)))) { log_error("alloc pvl failed."); dm_list_move(&pp->arg_fail, &pd->list); continue; } pv_name = pd->name; log_debug("Creating a new PV on %s.", pv_name); if (!(pv = pv_create(cmd, pd->dev, &pp->pva))) { log_error("Failed to setup physical volume \"%s\".", pv_name); dm_list_move(&pp->arg_fail, &pd->list); continue; } log_verbose("Set up physical volume for \"%s\" with %" PRIu64 " available sectors.", pv_name, pv_size(pv)); if (!label_remove(pv->dev)) { log_error("Failed to wipe existing label on %s.", pv_name); dm_list_move(&pp->arg_fail, &pd->list); continue; } if (pp->zero) { log_verbose("Zeroing start of device %s.", pv_name); if (!dev_open_quiet(pv->dev)) { log_error("%s not opened: device not zeroed.", pv_name); dm_list_move(&pp->arg_fail, &pd->list); continue; } if (!dev_set(pv->dev, UINT64_C(0), (size_t) 2048, 0)) { log_error("%s not wiped: aborting.", pv_name); if (!dev_close(pv->dev)) stack; dm_list_move(&pp->arg_fail, &pd->list); continue; } if (!dev_close(pv->dev)) stack; } log_verbose("Writing physical volume data to disk \"%s\".", pv_name); if (!pv_write(cmd, pv, 0)) { log_error("Failed to write physical volume \"%s\".", pv_name); dm_list_move(&pp->arg_fail, &pd->list); continue; } log_print_unless_silent("Physical volume \"%s\" successfully created.", pv_name); pvl->pv = pv; dm_list_add(&pp->pvs, &pvl->list); } /* * Remove PVs from devices for pvremove. */ dm_list_iterate_items_safe(pd, pd2, &pp->arg_remove) { if (!label_remove(pd->dev)) { log_error("Failed to wipe existing label(s) on %s.", pd->name); dm_list_move(&pp->arg_fail, &pd->list); continue; } info = lvmcache_info_from_pvid(pd->pvid, pd->dev, 0); if (info) lvmcache_del(info); if (!lvmetad_pv_gone_by_dev(pd->dev)) { log_error("Failed to remove PV %s from lvmetad.", pd->name); dm_list_move(&pp->arg_fail, &pd->list); continue; } log_print_unless_silent("Labels on physical volume \"%s\" successfully wiped.", pd->name); } /* * Special case: pvremove duplicate PVs (also see above). */ dm_list_iterate_items_safe(pd, pd2, &remove_duplicates) { if (!label_remove(pd->dev)) { log_error("Failed to wipe existing label(s) on %s.", pd->name); dm_list_move(&pp->arg_fail, &pd->list); continue; } if (!lvmetad_pv_gone_by_dev(pd->dev)) { log_error("Failed to remove PV %s from lvmetad.", pd->name); dm_list_move(&pp->arg_fail, &pd->list); continue; } lvmcache_remove_unchosen_duplicate(pd->dev); log_print_unless_silent("Labels on physical volume \"%s\" successfully wiped.", pd->name); } dm_list_iterate_items(pd, &pp->arg_fail) log_debug("%s: command failed for %s.", cmd->command->name, pd->name); if (!dm_list_empty(&pp->arg_fail)) goto_bad; /* * Returns with VG_ORPHANS write lock held because vgcreate and * vgextend want to use the newly created PVs. */ return 1; bad: unlock_vg(cmd, NULL, VG_ORPHANS); out: return 0; }