/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
if (!vg_check_status(vg, EXPORTED_VG))
return ECMD_FAILED;
if (tags && !dm_list_empty(tags))
tags_supplied = 1;
if (arg_lvnames && !dm_list_empty(arg_lvnames))
lvargs_supplied = 1;
/* Process all LVs in this VG if no restrictions given */
if (!tags_supplied && !lvargs_supplied)
process_all = 1;
/* Or if VG tags match */
if (!process_lv && tags_supplied &&
str_list_match_list(tags, &vg->tags)) {
process_all = 1;
}
dm_list_iterate_items(lvl, &vg->lvs) {
if (lvl->lv->status & SNAPSHOT)
continue;
if (lv_is_virtual_origin(lvl->lv) && !arg_count(cmd, all_ARG))
continue;
/* Should we process this LV? */
if (process_all)
process_lv = 1;
else
process_lv = 0;
/* LV tag match? */
if (!process_lv && tags_supplied &&
str_list_match_list(tags, &lvl->lv->tags)) {
process_lv = 1;
}
/* LV name match? */
if (lvargs_supplied &&
str_list_match_item(arg_lvnames, lvl->lv->name)) {
process_lv = 1;
lvargs_matched++;
}
if (!process_lv)
continue;
ret = process_single(cmd, lvl->lv, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
return ret_max;
}
if (lvargs_supplied && lvargs_matched != dm_list_size(arg_lvnames)) {
log_error("One or more specified logical volume(s) not found.");
if (ret_max < ECMD_FAILED)
ret_max = ECMD_FAILED;
}
return ret_max;
}
int process_each_lv(struct cmd_context *cmd, int argc, char **argv,
uint32_t flags, void *handle,
int (*process_single) (struct cmd_context * cmd,
struct logical_volume * lv,
void *handle))
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
int ret = 0;
if (is_pv(pv) && !vg && !is_orphan(pv)) {
vg_name = pv_vg_name(pv);
vg = vg_read(cmd, vg_name, NULL, 0);
if (vg_read_error(vg)) {
vg_release(vg);
log_error("Skipping volume group %s", vg_name);
return ECMD_FAILED;
}
/*
* Replace possibly incomplete PV structure with new one
* allocated in vg_read_internal() path.
*/
if (!(pvl = find_pv_in_vg(vg, pv_dev_name(pv)))) {
log_error("Unable to find %s in volume group %s",
pv_dev_name(pv), vg_name);
vg_release(vg);
return ECMD_FAILED;
}
pv = pvl->pv;
}
if (dm_list_empty(&pv->segments)) {
ret = process_single(cmd, NULL, &_free_pv_segment, handle);
if (ret > ret_max)
ret_max = ret;
} else
dm_list_iterate_items(pvseg, &pv->segments) {
ret = process_single(cmd, vg, pvseg, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
break;
}
if (vg_name)
unlock_vg(cmd, vg_name);
if (!old_vg)
vg_release(vg);
return ret_max;
}
int process_each_segment_in_lv(struct cmd_context *cmd,
struct logical_volume *lv,
void *handle,
int (*process_single) (struct cmd_context * cmd,
struct lv_segment * seg,
void *handle))
{
struct lv_segment *seg;
int ret_max = ECMD_PROCESSED;
int ret;
dm_list_iterate_items(seg, &lv->segments) {
ret = process_single(cmd, seg, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
break;
}
return ret_max;
}
static int _process_one_vg(struct cmd_context *cmd, const char *vg_name,
const char *vgid,
struct dm_list *tags, struct dm_list *arg_vgnames,
uint32_t flags, void *handle, int ret_max,
int (*process_single) (struct cmd_context * cmd,
const char *vg_name,
struct volume_group * vg,
void *handle))
{
struct volume_group *vg;
int ret = 0;
log_verbose("Finding volume group \"%s\"", vg_name);
vg = vg_read(cmd, vg_name, vgid, flags);
/* Allow FAILED_INCONSISTENT through only for vgcfgrestore */
if (vg_read_error(vg) &&
!((vg_read_error(vg) == FAILED_INCONSISTENT) &&
(flags & READ_ALLOW_INCONSISTENT))) {
ret_max = ECMD_FAILED;
goto_out;
}
if (!dm_list_empty(tags)) {
/* Only process if a tag matches or it's on arg_vgnames */
if (!str_list_match_item(arg_vgnames, vg_name) &&
!str_list_match_list(tags, &vg->tags))
goto out;
}
while ((dev = dev_iter_get(iter))) {
if (!(pv = pv_read(cmd, dev_name(dev), NULL, NULL, 0, 0))) {
memset(&pv_dummy, 0, sizeof(pv_dummy));
dm_list_init(&pv_dummy.tags);
dm_list_init(&pv_dummy.segments);
pv_dummy.dev = dev;
pv_dummy.fmt = NULL;
pv = &pv_dummy;
}
ret = process_single(cmd, NULL, pv, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
break;
}
dev_iter_destroy(iter);
return ret_max;
}
/*
* If the lock_type is LCK_VG_READ (used only in reporting commands),
* we lock VG_GLOBAL to enable use of metadata cache.
* This can pause alongide pvscan or vgscan process for a while.
*/
int process_each_pv(struct cmd_context *cmd, int argc, char **argv,
struct volume_group *vg, uint32_t flags,
int scan_label_only, void *handle,
int (*process_single) (struct cmd_context * cmd,
struct volume_group * vg,
struct physical_volume * pv,
void *handle))
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
int ret = 0;
int lock_global = !(flags & READ_WITHOUT_LOCK) && !(flags & READ_FOR_UPDATE);
if (lock_global && !lock_vol(cmd, VG_GLOBAL, LCK_VG_READ)) {
log_error("Unable to obtain global lock.");
return ECMD_FAILED;
}
if (argc) {
log_verbose("Using physical volume(s) on command line");
for (; opt < argc; opt++) {
if (*argv[opt] == '@') {
tagname = argv[opt] + 1;
if (!validate_name(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, &tags,
dm_pool_strdup(cmd->mem,
tagname))) {
log_error("strlist allocation failed");
goto bad;
}
continue;
}
if (vg) {
if (!(pvl = find_pv_in_vg(vg, argv[opt]))) {
log_error("Physical Volume \"%s\" not "
"found in Volume Group "
"\"%s\"", argv[opt],
vg->name);
ret_max = ECMD_FAILED;
continue;
}
pv = pvl->pv;
} else {
if (!(pv = pv_read(cmd, argv[opt], NULL,
NULL, 1, scan_label_only))) {
log_error("Failed to read physical "
"volume \"%s\"", argv[opt]);
ret_max = ECMD_FAILED;
continue;
}
/*
* If a PV has no MDAs it may appear to be an
* orphan until the metadata is read off
* another PV in the same VG. Detecting this
* means checking every VG by scanning every
* PV on the system.
*/
if (!scanned && is_orphan(pv)) {
if (!scan_label_only &&
!scan_vgs_for_pvs(cmd)) {
stack;
ret_max = ECMD_FAILED;
continue;
}
scanned = 1;
if (!(pv = pv_read(cmd, argv[opt],
NULL, NULL, 1,
scan_label_only))) {
log_error("Failed to read "
"physical volume "
"\"%s\"", argv[opt]);
ret_max = ECMD_FAILED;
continue;
}
}
}
ret = process_single(cmd, vg, pv, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
goto out;
}
if (!dm_list_empty(&tags) && (vgnames = get_vgnames(cmd, 0)) &&
!dm_list_empty(vgnames)) {
dm_list_iterate_items(sll, vgnames) {
vg = vg_read(cmd, sll->str, NULL, flags);
if (vg_read_error(vg)) {
ret_max = ECMD_FAILED;
vg_release(vg);
stack;
continue;
}
ret = process_each_pv_in_vg(cmd, vg, &tags,
handle,
process_single);
unlock_and_release_vg(cmd, vg, sll->str);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
goto out;
}
}
} else {
if (vg) {
log_verbose("Using all physical volume(s) in "
"volume group");
ret = process_each_pv_in_vg(cmd, vg, NULL, handle,
process_single);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
goto out;
} else if (arg_count(cmd, all_ARG)) {
ret = _process_all_devs(cmd, handle, process_single);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
goto out;
} else {
log_verbose("Scanning for physical volume names");
if (!(pvslist = get_pvs(cmd)))
goto bad;
dm_list_iterate_items(pvl, pvslist) {
ret = process_single(cmd, NULL, pvl->pv,
handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
goto out;
}
}
}
out:
if (lock_global)
unlock_vg(cmd, VG_GLOBAL);
return ret_max;
bad:
if (lock_global)
unlock_vg(cmd, VG_GLOBAL);
return ECMD_FAILED;
}
/*
* 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;
char *st;
char *dev_dir = cmd->dev_dir;
int dev_dir_provided = 0;
/* Path supplied? */
if (vg_name && strchr(vg_name, '/')) {
/* Strip dev_dir (optional) */
if (*vg_name == '/') {
while (*vg_name == '/')
vg_name++;
vg_name--;
}
if (!strncmp(vg_name, dev_dir, strlen(dev_dir))) {
vg_name += strlen(dev_dir);
dev_dir_provided = 1;
while (*vg_name == '/')
vg_name++;
}
if (*vg_name == '/') {
log_error("\"%s\": Invalid path for Logical "
"Volume", lv_name);
return 0;
}
/* Require exactly one set of consecutive slashes */
if ((st = strchr(vg_name, '/')))
while (*st == '/')
st++;
if (!strchr(vg_name, '/') || strchr(st, '/')) {
log_error("\"%s\": Invalid path for Logical Volume",
lv_name);
return 0;
}
vg_name = dm_pool_strdup(cmd->mem, vg_name);
if (!vg_name) {
log_error("Allocation of vg_name failed");
return 0;
}
*strchr(vg_name, '/') = '\0';
return vg_name;
}
if (!(vg_name = default_vgname(cmd))) {
if (lv_name)
log_error("Path required for Logical Volume \"%s\"",
lv_name);
return 0;
}
return vg_name;
}
/*
* Extract default volume group name from environment
*/
char *default_vgname(struct cmd_context *cmd)
{
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("Environment Volume Group in LVM_VG_NAME invalid: "
"\"%s\"", vg_path);
return 0;
}
return dm_pool_strdup(cmd->mem, vg_path);
}
/*
* 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 %" PRIu32 " length %" PRIu32
" on %s", start, count, pvname);
/* 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(&tags);
dm_list_init(&arg_pvnames);
for (i = 0; i < argc; i++) {
if (*argv[i] == '@') {
tagname = argv[i] + 1;
if (!validate_name(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 = strchr(pvname, ':'))) {
if (!(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");
int apply_lvname_restrictions(const char *name)
{
if (!strncmp(name, "snapshot", 8)) {
log_error("Names starting \"snapshot\" are reserved. "
"Please choose a different LV name.");
return 0;
}
if (!strncmp(name, "pvmove", 6)) {
log_error("Names starting \"pvmove\" are reserved. "
"Please choose a different LV name.");
return 0;
}
if (strstr(name, "_mlog")) {
log_error("Names including \"_mlog\" are reserved. "
"Please choose a different LV name.");
return 0;
}
if (strstr(name, "_mimage")) {
log_error("Names including \"_mimage\" are reserved. "
"Please choose a different LV name.");
return 0;
}
if (strstr(name, "_vorigin")) {
log_error("Names including \"_vorigin\" are reserved. "
"Please choose a different LV name.");
return 0;
}
return 1;
}
int is_reserved_lvname(const char *name)
{
int rc, old_suppress;
/*
* 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)
{
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 = 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_count(cmd, clustered_ARG))
vp_new->clustered =
!strcmp(arg_str_value(cmd, clustered_ARG,
vp_def->clustered ? "y":"n"), "y");
else
/* Default depends on current locking type */
vp_new->clustered = locking_is_clustered();
if (arg_sign_value(cmd, physicalextentsize_ARG, 0) == SIGN_MINUS) {
log_error("Physical extent size may not be negative");
return 1;
}
if (arg_sign_value(cmd, maxlogicalvolumes_ARG, 0) == SIGN_MINUS) {
log_error("Max Logical Volumes may not be negative");
return 1;
}
if (arg_sign_value(cmd, maxphysicalvolumes_ARG, 0) == SIGN_MINUS) {
log_error("Max Physical Volumes may not be negative");
return 1;
}
if ((lv->status & PVMOVE) &&
(pvname = get_pvmove_pvname_from_lv_mirr(lv))) {
log_verbose("Spawning background pvmove process for %s",
pvname);
pvmove_poll(cmd, pvname, 1);
} else if ((lv->status & LOCKED) &&
(pvname = get_pvmove_pvname_from_lv(lv))) {
log_verbose("Spawning background pvmove process for %s",
pvname);
pvmove_poll(cmd, pvname, 1);
}
if (lv->status & CONVERTING) {
log_verbose("Spawning background lvconvert process for %s",
lv->name);
lvconvert_poll(cmd, lv, 1);
}
}
/*
* Intial sanity checking of non-recovery related command-line arguments.
*
* Output arguments:
* pp: structure allocated by caller, fields written / validated here
*/
int pvcreate_params_validate(struct cmd_context *cmd,
int argc, char **argv,
struct pvcreate_params *pp)
{
if (!argc) {
log_error("Please enter a physical volume path");
return 0;
}
if (arg_count(cmd, yes_ARG) && !arg_count(cmd, force_ARG)) {
log_error("Option y can only be given with option f");
return 0;
}
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->labelsector = arg_int64_value(cmd, labelsector_ARG,
DEFAULT_LABELSECTOR);
}
if (!(cmd->fmt->features & FMT_MDAS) &&
(arg_count(cmd, pvmetadatacopies_ARG) ||
arg_count(cmd, metadatasize_ARG) ||
arg_count(cmd, dataalignment_ARG) ||
arg_count(cmd, dataalignmentoffset_ARG))) {
log_error("Metadata and data alignment parameters only "
"apply to text format.");
return 0;
}
if (arg_count(cmd, pvmetadatacopies_ARG) &&
arg_int_value(cmd, pvmetadatacopies_ARG, -1) > 2) {
log_error("Metadatacopies may only be 0, 1 or 2");
return 0;
}
if (arg_count(cmd, zero_ARG))
pp->zero = strcmp(arg_str_value(cmd, zero_ARG, "y"), "n");
if (arg_sign_value(cmd, dataalignment_ARG, 0) == SIGN_MINUS) {
log_error("Physical volume data alignment may not be negative");
return 0;
}
pp->data_alignment = arg_uint64_value(cmd, dataalignment_ARG, UINT64_C(0));
if (pp->data_alignment > ULONG_MAX) {
log_error("Physical volume data alignment is too big.");
return 0;
}
if (pp->data_alignment && pp->pe_start) {
if (pp->pe_start % pp->data_alignment)
log_warn("WARNING: Ignoring data alignment %" PRIu64
" incompatible with --restorefile value (%"
PRIu64").", pp->data_alignment, pp->pe_start);
pp->data_alignment = 0;
}
if (arg_sign_value(cmd, dataalignmentoffset_ARG, 0) == SIGN_MINUS) {
log_error("Physical volume data alignment offset may not be negative");
return 0;
}
pp->data_alignment_offset = arg_uint64_value(cmd, dataalignmentoffset_ARG, UINT64_C(0));
if (pp->data_alignment_offset > ULONG_MAX) {
log_error("Physical volume data alignment offset is too big.");
return 0;
}
if (pp->data_alignment_offset && pp->pe_start) {
log_warn("WARNING: Ignoring data alignment offset %" PRIu64
" incompatible with --restorefile value (%"
PRIu64").", pp->data_alignment_offset, pp->pe_start);
pp->data_alignment_offset = 0;
}
if (arg_sign_value(cmd, metadatasize_ARG, 0) == SIGN_MINUS) {
log_error("Metadata size may not be negative");
return 0;
}