/
toollib.c
1889 lines (1603 loc) · 46.9 KB
/
toollib.c
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/*
* 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
*/
#include "tools.h"
#include <sys/stat.h>
#include <signal.h>
#include <sys/wait.h>
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: %s", cmd->cmd_line);
sigaction(SIGCHLD, &act, NULL);
if (!skip_lvm)
sync_local_dev_names(cmd); /* Flush ops and reset dm cookie */
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));
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)
{
const char *dmdir = dm_dir();
size_t dmdir_len = strlen(dmdir), vglv_sz;
char *vgname, *lvname, *layer, *vglv;
/* FIXME Do this properly */
if (*vg_name == '/') {
while (*vg_name == '/')
vg_name++;
vg_name--;
}
/* Reformat string if /dev/mapper found */
if (!strncmp(vg_name, dmdir, dmdir_len) && vg_name[dmdir_len] == '/') {
if (dev_dir_found)
*dev_dir_found = 1;
vg_name += dmdir_len;
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;
}
if (!strncmp(vg_name, cmd->dev_dir, strlen(cmd->dev_dir))) {
if (dev_dir_found)
*dev_dir_found = 1;
vg_name += strlen(cmd->dev_dir);
while (*vg_name == '/')
vg_name++;
} else if (dev_dir_found)
*dev_dir_found = 0;
return vg_name;
}
/*
* Returns 1 if VG should be ignored.
*/
int ignore_vg(struct volume_group *vg, const char *vg_name, int allow_inconsistent, int *ret)
{
uint32_t read_error = vg_read_error(vg);
if (!read_error)
return 0;
if ((read_error == FAILED_INCONSISTENT) && allow_inconsistent)
return 0;
if (read_error == FAILED_CLUSTERED && vg->cmd->ignore_clustered_vgs)
log_verbose("Skipping volume group %s", vg_name);
else {
log_error("Skipping volume group %s", vg_name);
*ret = ECMD_FAILED;
}
return 1;
}
/*
* Metadata iteration functions
*/
int process_each_lv_in_vg(struct cmd_context *cmd,
struct volume_group *vg,
const struct dm_list *arg_lvnames,
const struct dm_list *tagsl,
struct dm_list *failed_lvnames,
void *handle,
process_single_lv_fn_t process_single_lv)
{
int ret_max = ECMD_PROCESSED;
int ret;
unsigned process_all = 0;
unsigned tags_supplied = 0;
unsigned lvargs_supplied = 0;
unsigned lvargs_matched = 0;
char *lv_name;
struct lv_list *lvl;
if (!vg_check_status(vg, EXPORTED_VG))
return ECMD_FAILED;
if (tagsl && !dm_list_empty(tagsl))
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 */
else if (tags_supplied &&
str_list_match_list(tagsl, &vg->tags, NULL))
process_all = 1;
/*
* FIXME: In case of remove it goes through deleted entries,
* but it works since entries are allocated from vg mem pool.
*/
dm_list_iterate_items(lvl, &vg->lvs) {
if (lvl->lv->status & SNAPSHOT)
continue;
/* Skip availability change for non-virt snaps when processing all LVs */
/* FIXME: pass process_all to process_single_lv() */
if (process_all && arg_count(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_count(cmd, all_ARG))
continue;
/*
* Only let hidden LVs through it --all was used or the LVs
* were specifically named on the command line.
*/
if (!lvargs_supplied && !lv_is_visible(lvl->lv) && !arg_count(cmd, all_ARG))
continue;
/* LV name match? */
if (lvargs_supplied &&
str_list_match_item(arg_lvnames, lvl->lv->name))
/* Check even when process_all for counter */
lvargs_matched++;
/* LV tag match? skip test, when process_all */
else if (!process_all &&
(!tags_supplied ||
!str_list_match_list(tagsl, &lvl->lv->tags, NULL)))
continue;
if (sigint_caught())
return_ECMD_FAILED;
lvl->lv->vg->cmd_missing_vgs = 0;
ret = process_single_lv(cmd, lvl->lv, handle);
if (ret != ECMD_PROCESSED && failed_lvnames) {
lv_name = dm_pool_strdup(cmd->mem, lvl->lv->name);
if (!lv_name ||
!str_list_add(cmd->mem, failed_lvnames, lv_name)) {
log_error("Allocation failed for str_list.");
return ECMD_FAILED;
}
if (lvl->lv->vg->cmd_missing_vgs)
ret = ECMD_PROCESSED;
}
if (ret > ret_max)
ret_max = ret;
}
if (lvargs_supplied && lvargs_matched != dm_list_size(arg_lvnames)) {
/*
* FIXME: lvm supports removal of LV with all its dependencies
* this leads to miscalculation that depends on the order of args.
*/
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,
process_single_lv_fn_t process_single_lv)
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
int ret;
struct dm_list *tags_arg;
struct dm_list *vgnames; /* VGs to process */
struct dm_str_list *sll, *strl;
struct cmd_vg *cvl_vg;
struct dm_list cmd_vgs;
struct dm_list failed_lvnames;
struct dm_list tagsl, lvnames;
struct dm_list arg_lvnames; /* Cmdline vgname or vgname/lvname */
struct dm_list arg_vgnames;
char *vglv;
size_t vglv_sz;
const char *vgname;
dm_list_init(&tagsl);
dm_list_init(&arg_lvnames);
dm_list_init(&failed_lvnames);
if (argc) {
log_verbose("Using logical volume(s) on command line");
dm_list_init(&arg_vgnames);
for (; opt < argc; opt++) {
const char *lv_name = argv[opt];
const char *tmp_lv_name;
char *vgname_def;
unsigned 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, &tagsl,
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;
}
}
}
vgnames = &arg_vgnames;
}
if (!argc || !dm_list_empty(&tagsl)) {
log_verbose("Finding all logical volumes");
if (!lvmetad_vg_list_to_lvmcache(cmd))
stack;
if (!(vgnames = get_vgnames(cmd, 0)) || dm_list_empty(vgnames)) {
log_error("No volume groups found");
return ret_max;
}
}
dm_list_iterate_items(strl, vgnames) {
vgname = strl->str;
dm_list_init(&cmd_vgs);
if (!(cvl_vg = cmd_vg_add(cmd->mem, &cmd_vgs,
vgname, NULL, flags)))
return_ECMD_FAILED;
if (!cmd_vg_read(cmd, &cmd_vgs)) {
if (ignore_vg(cvl_vg->vg, vgname, 0, &ret_max))
stack;
free_cmd_vgs(&cmd_vgs);
continue;
}
tags_arg = &tagsl;
dm_list_init(&lvnames); /* LVs to be processed in this VG */
dm_list_iterate_items(sll, &arg_lvnames) {
const char *vg_name = sll->str;
const char *lv_name = strchr(vg_name, '/');
if ((!lv_name && !strcmp(vg_name, vgname))) {
/* Process all LVs in this VG */
tags_arg = NULL;
dm_list_init(&lvnames);
break;
} else if (!strncmp(vg_name, vgname, strlen(vgname)) && lv_name &&
strlen(vgname) == (size_t) (lv_name - vg_name)) {
if (!str_list_add(cmd->mem, &lvnames,
dm_pool_strdup(cmd->mem,
lv_name + 1))) {
log_error("strlist allocation failed");
free_cmd_vgs(&cmd_vgs);
return ECMD_FAILED;
}
}
}
for (;;) {
if (sigint_caught())
return_ECMD_FAILED;
ret = process_each_lv_in_vg(cmd, cvl_vg->vg, &lvnames,
tags_arg, &failed_lvnames,
handle, process_single_lv);
if (ret != ECMD_PROCESSED) {
stack;
break;
}
if (dm_list_empty(&failed_lvnames))
break;
/* Try again with failed LVs in this VG */
dm_list_init(&lvnames);
dm_list_splice(&lvnames, &failed_lvnames);
free_cmd_vgs(&cmd_vgs);
if (!cmd_vg_read(cmd, &cmd_vgs)) {
stack;
ret = ECMD_FAILED; /* break */
break;
}
}
if (ret > ret_max)
ret_max = ret;
free_cmd_vgs(&cmd_vgs);
}
return ret_max;
}
int process_each_segment_in_pv(struct cmd_context *cmd,
struct volume_group *vg,
struct physical_volume *pv,
void *handle,
process_single_pvseg_fn_t process_single_pvseg)
{
struct pv_segment *pvseg;
struct pv_list *pvl;
const char *vg_name = NULL;
int ret_max = ECMD_PROCESSED;
int ret;
struct volume_group *old_vg = vg;
struct pv_segment _free_pv_segment = { .pv = pv };
if (is_pv(pv) && !vg && !is_orphan(pv)) {
vg_name = pv_vg_name(pv);
vg = vg_read(cmd, vg_name, NULL, 0);
if (ignore_vg(vg, vg_name, 0, &ret_max)) {
release_vg(vg);
stack;
return ret_max;
}
/*
* 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);
unlock_and_release_vg(cmd, vg, vg_name);
return ECMD_FAILED;
}
pv = pvl->pv;
}
if (dm_list_empty(&pv->segments)) {
ret = process_single_pvseg(cmd, NULL, &_free_pv_segment, handle);
if (ret > ret_max)
ret_max = ret;
} else
dm_list_iterate_items(pvseg, &pv->segments) {
if (sigint_caught()) {
ret_max = ECMD_FAILED;
stack;
break;
}
ret = process_single_pvseg(cmd, vg, pvseg, handle);
if (ret > ret_max)
ret_max = ret;
}
if (vg_name)
unlock_vg(cmd, vg_name);
if (!old_vg)
release_vg(vg);
return ret_max;
}
int process_each_segment_in_lv(struct cmd_context *cmd,
struct logical_volume *lv,
void *handle,
process_single_seg_fn_t process_single_seg)
{
struct lv_segment *seg;
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);
if (ret > ret_max)
ret_max = ret;
}
return ret_max;
}
static int _process_one_vg(struct cmd_context *cmd, const char *vg_name,
const char *vgid,
struct dm_list *tagsl, struct dm_list *arg_vgnames,
uint32_t flags, void *handle, int ret_max,
process_single_vg_fn_t process_single_vg)
{
struct dm_list cmd_vgs;
struct cmd_vg *cvl_vg;
int ret = ECMD_PROCESSED;
log_verbose("Finding volume group \"%s\"", vg_name);
dm_list_init(&cmd_vgs);
if (!(cvl_vg = cmd_vg_add(cmd->mem, &cmd_vgs, vg_name, vgid, flags)))
return_ECMD_FAILED;
for (;;) {
if (sigint_caught()) {
ret = ECMD_FAILED;
stack;
break;
}
if (!cmd_vg_read(cmd, &cmd_vgs)) {
/* Allow FAILED_INCONSISTENT through only for vgcfgrestore */
if (ignore_vg(cvl_vg->vg, vg_name, flags & READ_ALLOW_INCONSISTENT, &ret)) {
stack;
break;
}
}
if (!dm_list_empty(tagsl) &&
/* Only process if a tag matches or it's on arg_vgnames */
!str_list_match_item(arg_vgnames, vg_name) &&
!str_list_match_list(tagsl, &cvl_vg->vg->tags, NULL))
break;
ret = process_single_vg(cmd, vg_name, cvl_vg->vg, handle);
if (vg_read_error(cvl_vg->vg)) /* FAILED_INCONSISTENT */
break;
if (!cvl_vg->vg->cmd_missing_vgs)
break;
free_cmd_vgs(&cmd_vgs);
}
free_cmd_vgs(&cmd_vgs);
return (ret > ret_max) ? ret : ret_max;
}
int process_each_vg(struct cmd_context *cmd, int argc, char **argv,
uint32_t flags, void *handle,
process_single_vg_fn_t process_single_vg)
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
struct dm_str_list *sl;
struct dm_list *vgnames, *vgids;
struct dm_list arg_vgnames, tagsl;
const char *vg_name, *vgid;
dm_list_init(&tagsl);
dm_list_init(&arg_vgnames);
if (argc) {
log_verbose("Using volume group(s) on command line");
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, &tagsl,
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;
}
}
vgnames = &arg_vgnames;
}
if (!argc || !dm_list_empty(&tagsl)) {
log_verbose("Finding all volume groups");
if (!lvmetad_vg_list_to_lvmcache(cmd))
stack;
if (!(vgids = get_vgids(cmd, 0)) || dm_list_empty(vgids)) {
log_error("No volume groups found");
return ret_max;
}
dm_list_iterate_items(sl, vgids) {
if (sigint_caught())
return_ECMD_FAILED;
vgid = sl->str;
if (!vgid || !(vg_name = lvmcache_vgname_from_vgid(cmd->mem, vgid)))
continue;
ret_max = _process_one_vg(cmd, vg_name, vgid, &tagsl,
&arg_vgnames,
flags, handle,
ret_max, process_single_vg);
}
} else {
dm_list_iterate_items(sl, vgnames) {
if (sigint_caught())
return_ECMD_FAILED;
vg_name = sl->str;
if (is_orphan_vg(vg_name))
continue; /* FIXME Unnecessary? */
ret_max = _process_one_vg(cmd, vg_name, NULL, &tagsl,
&arg_vgnames,
flags, handle,
ret_max, process_single_vg);
}
}
return ret_max;
}
int process_each_pv_in_vg(struct cmd_context *cmd, struct volume_group *vg,
const struct dm_list *tagsl, void *handle,
process_single_pv_fn_t process_single_pv)
{
int ret_max = ECMD_PROCESSED;
int ret;
struct pv_list *pvl;
dm_list_iterate_items(pvl, &vg->pvs) {
if (sigint_caught())
return_ECMD_FAILED;
if (tagsl && !dm_list_empty(tagsl) &&
!str_list_match_list(tagsl, &pvl->pv->tags, NULL)) {
continue;
}
if ((ret = process_single_pv(cmd, vg, pvl->pv, handle)) > ret_max)
ret_max = ret;
}
return ret_max;
}
static int _process_all_devs(struct cmd_context *cmd, void *handle,
process_single_pv_fn_t process_single_pv)
{
struct pv_list *pvl;
struct dm_list *pvslist;
struct physical_volume *pv;
struct physical_volume pv_dummy;
struct dev_iter *iter;
struct device *dev;
int ret_max = ECMD_PROCESSED;
int ret;
lvmcache_seed_infos_from_lvmetad(cmd);
if (!(pvslist = get_pvs(cmd)))
return_ECMD_FAILED;
if (!(iter = dev_iter_create(cmd->filter, 1))) {
log_error("dev_iter creation failed");
return ECMD_FAILED;
}
while ((dev = dev_iter_get(iter)))
{
if (sigint_caught()) {
ret_max = ECMD_FAILED;
stack;
break;
}
memset(&pv_dummy, 0, sizeof(pv_dummy));
dm_list_init(&pv_dummy.tags);
dm_list_init(&pv_dummy.segments);
pv_dummy.dev = dev;
pv = &pv_dummy;
/* TODO use a device-indexed hash here */
dm_list_iterate_items(pvl, pvslist)
if (pvl->pv->dev == dev)
pv = pvl->pv;
ret = process_single_pv(cmd, NULL, pv, handle);
if (ret > ret_max)
ret_max = ret;
free_pv_fid(pv);
}
dev_iter_destroy(iter);
dm_list_iterate_items(pvl, pvslist)
free_pv_fid(pvl->pv);
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,
process_single_pv_fn_t process_single_pv)
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
int ret;
int lock_global = !(flags & READ_WITHOUT_LOCK) && !(flags & READ_FOR_UPDATE) && !lvmetad_active();
struct pv_list *pvl;
struct physical_volume *pv;
struct dm_list *pvslist = NULL, *vgnames;
struct dm_list tagsl;
struct dm_str_list *sll;
char *at_sign, *tagname;
struct device *dev;
dm_list_init(&tagsl);
if (lock_global && !lock_vol(cmd, VG_GLOBAL, LCK_VG_READ, NULL)) {
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 (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
dm_unescape_colons_and_at_signs(argv[opt], NULL, &at_sign);
if (at_sign && (at_sign == argv[opt])) {
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, &tagsl,
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 (!pvslist) {
lvmcache_seed_infos_from_lvmetad(cmd);
if (!(pvslist = get_pvs(cmd)))
goto bad;
}
if (!(dev = dev_cache_get(argv[opt], cmd->filter))) {
log_error("Failed to find device "
"\"%s\"", argv[opt]);
ret_max = ECMD_FAILED;
continue;
}
pv = NULL;
dm_list_iterate_items(pvl, pvslist)
if (pvl->pv->dev == dev)
pv = pvl->pv;
if (!pv) {
log_error("Failed to find physical volume "
"\"%s\"", argv[opt]);
ret_max = ECMD_FAILED;
continue;
}
}
ret = process_single_pv(cmd, vg, pv, handle);
if (ret > ret_max)
ret_max = ret;
}
if (!dm_list_empty(&tagsl) && (vgnames = get_vgnames(cmd, 1)) &&
!dm_list_empty(vgnames)) {
dm_list_iterate_items(sll, vgnames) {
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
vg = vg_read(cmd, sll->str, NULL, flags);
if (ignore_vg(vg, sll->str, 0, &ret_max)) {
release_vg(vg);
stack;
continue;
}
ret = process_each_pv_in_vg(cmd, vg, &tagsl,
handle,
process_single_pv);
if (ret > ret_max)
ret_max = ret;
unlock_and_release_vg(cmd, vg, sll->str);
}
}
} else {
if (vg) {
log_verbose("Using all physical volume(s) in "
"volume group");
ret_max = process_each_pv_in_vg(cmd, vg, NULL, handle,
process_single_pv);
} else if (arg_count(cmd, all_ARG)) {
ret_max = _process_all_devs(cmd, handle, process_single_pv);
} else {
log_verbose("Scanning for physical volume names");
lvmcache_seed_infos_from_lvmetad(cmd);
if (!(pvslist = get_pvs(cmd)))
goto bad;
dm_list_iterate_items(pvl, pvslist) {
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
ret = process_single_pv(cmd, NULL, pvl->pv,
handle);
if (ret > ret_max)
ret_max = ret;
free_pv_fid(pvl->pv);
}
}
}
out:
if (pvslist)
dm_list_iterate_items(pvl, pvslist)
free_pv_fid(pvl->pv);
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;
/* 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);
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 (!st || 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;
}