mirror of
git://sourceware.org/git/lvm2.git
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328 lines
6.9 KiB
C
328 lines
6.9 KiB
C
/*
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* Copyright (C) 2001 Sistina Software (UK) Limited.
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*
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* This file is released under the GPL.
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*/
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#include "tools.h"
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#include <sys/stat.h>
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int create_dir(const char *dir)
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{
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struct stat info;
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if (!*dir)
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return 1;
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if (stat(dir, &info) < 0 ) {
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log_verbose("Creating directory %s", dir);
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if (!mkdir(dir, 0777));
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return 1;
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log_sys_error("mkdir", dir);
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return 0;
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}
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if (S_ISDIR(info.st_mode))
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return 1;
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log_error("Directory %s not found", dir);
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return 0;
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}
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int process_each_lv_in_vg(struct volume_group *vg,
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int (*process_single) (struct logical_volume *lv))
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{
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int ret_max = 0;
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int ret = 0;
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struct list *lvh;
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struct logical_volume *lv;
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/* FIXME Export-handling */
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if (vg->status & EXPORTED_VG) {
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log_error("Volume group %s is exported", vg->name);
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return ECMD_FAILED;
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}
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list_iterate(lvh, &vg->lvs) {
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lv = &list_item(lvh, struct lv_list)->lv;
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ret = process_single(lv);
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if (ret > ret_max)
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ret_max = ret;
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}
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return ret_max;
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}
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int process_each_lv(int argc, char **argv,
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int (*process_single) (struct logical_volume * lv))
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{
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int opt = 0;
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int ret_max = 0;
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int ret = 0;
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int vg_count = 0;
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struct list *vgh, *vgs;
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struct volume_group *vg;
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struct logical_volume *lv;
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struct lv_list *lvl;
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char *vg_name;
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if (argc) {
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log_verbose("Using logical volume(s) on command line");
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for (; opt < argc; opt++) {
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char *lv_name = argv[opt];
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/* does VG exist? */
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if (!(vg_name = extract_vgname(fid, lv_name))) {
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if (ret_max < ECMD_FAILED)
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ret_max = ECMD_FAILED;
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continue;
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}
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log_verbose("Finding volume group %s", vg_name);
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if (!(vg = fid->ops->vg_read(fid, vg_name))) {
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log_error("Volume group %s doesn't exist",
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vg_name);
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if (ret_max < ECMD_FAILED)
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ret_max = ECMD_FAILED;
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continue;
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}
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if (!(lvl = find_lv_in_vg(vg, lv_name))) {
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log_error("Can't find logical volume %s "
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"in volume group %s",
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lv_name, vg_name);
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if (ret_max < ECMD_FAILED)
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ret_max = ECMD_FAILED;
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continue;
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}
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lv = &lvl->lv;
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if ((ret = process_single(lv)) > ret_max)
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ret_max = ret;
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}
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} else {
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log_verbose("Finding all logical volumes");
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if (!(vgs = fid->ops->get_vgs(fid))) {
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log_error("No volume groups found");
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return ECMD_FAILED;
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}
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list_iterate(vgh, vgs) {
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vg_name = list_item(vgh, struct name_list)->name;
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if (!(vg = fid->ops->vg_read(fid, vg_name))) {
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log_error("Volume group %s not found", vg_name);
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if (ret_max < ECMD_FAILED)
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ret_max = ECMD_FAILED;
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continue;
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}
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ret = process_each_lv_in_vg(vg, process_single);
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if (ret > ret_max)
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ret_max = ret;
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vg_count++;
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}
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}
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return ret_max;
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}
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int process_each_vg(int argc, char **argv,
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int (*process_single) (const char *vg_name))
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{
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int opt = 0;
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int ret_max = 0;
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int ret = 0;
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struct list *vgh;
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struct list *vgs;
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if (argc) {
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log_verbose("Using volume group(s) on command line");
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for (; opt < argc; opt++)
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if ((ret = process_single(argv[opt])) > ret_max)
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ret_max = ret;
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} else {
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log_verbose("Finding all volume groups");
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if (!(vgs = fid->ops->get_vgs(fid))) {
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log_error("No volume groups found");
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return ECMD_FAILED;
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}
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list_iterate(vgh, vgs) {
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ret =
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process_single(list_item
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(vgh, struct name_list)->name);
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if (ret > ret_max)
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ret_max = ret;
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}
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}
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return ret_max;
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}
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int process_each_pv_in_vg(struct volume_group *vg,
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int (*process_single) (struct volume_group * vg,
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struct physical_volume * pv))
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{
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int ret_max = 0;
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int ret = 0;
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struct list *pvh;
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struct physical_volume *pv;
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list_iterate(pvh, &vg->pvs) {
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pv = list_item(pvh, struct pv_list)->pv;
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if ((ret = process_single(vg, pv)) > ret_max)
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ret_max = ret;
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}
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return ret_max;
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}
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int process_each_pv(int argc, char **argv, struct volume_group *vg,
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int (*process_single) (struct volume_group * vg,
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struct physical_volume * pv))
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{
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int opt = 0;
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int ret_max = 0;
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int ret = 0;
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struct pv_list *pvl;
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if (argc) {
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log_verbose("Using physical volume(s) on command line");
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for (; opt < argc; opt++) {
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if (!(pvl = find_pv_in_vg(vg, argv[opt]))) {
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log_error("Physical Volume %s not found in "
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"Volume Group %s", argv[opt],
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vg->name);
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continue;
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}
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ret = process_single(vg, pvl->pv);
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if (ret > ret_max)
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ret_max = ret;
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}
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} else {
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log_verbose("Using all physical volume(s) in volume group");
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process_each_pv_in_vg(vg, process_single);
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}
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return ret_max;
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}
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int is_valid_chars(char *n)
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{
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register char c;
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while ((c = *n++))
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if (!isalnum(c) && c != '.' && c != '_' && c != '-' && c != '+')
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return 0;
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return 1;
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}
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char *extract_vgname(struct format_instance *fi, char *lv_name)
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{
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char *vg_name = lv_name;
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char *st;
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char *dev_dir = fi->cmd->dev_dir;
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/* Path supplied? */
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if (vg_name && strchr(vg_name, '/')) {
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/* Strip dev_dir (optional) */
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if (!strncmp(vg_name, dev_dir, strlen(dev_dir)))
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vg_name += strlen(dev_dir);
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/* Require exactly one slash */
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/* FIXME But allow for consecutive slashes */
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if (!(st = strchr(vg_name, '/')) || (strchr(st + 1, '/'))) {
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log_error("%s: Invalid path for Logical Volume",
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lv_name);
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return 0;
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}
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vg_name = pool_strdup(fid->cmd->mem, vg_name);
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if (!vg_name) {
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log_error("Allocation of vg_name failed");
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return 0;
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}
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*strchr(vg_name, '/') = '\0';
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return vg_name;
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}
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if (!(vg_name = default_vgname(fid))) {
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if (lv_name)
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log_error("Path required for Logical Volume %s",
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lv_name);
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return 0;
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}
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return vg_name;
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}
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char *default_vgname(struct format_instance *fi)
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{
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char *vg_path;
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char *dev_dir = fi->cmd->dev_dir;
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/* Take default VG from environment? */
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vg_path = getenv("LVM_VG_NAME");
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if (!vg_path)
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return 0;
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/* Strip dev_dir (optional) */
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if (!strncmp(vg_path, dev_dir, strlen(dev_dir)))
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vg_path += strlen(dev_dir);
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if (strchr(vg_path, '/')) {
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log_error("Environment Volume Group in LVM_VG_NAME invalid: %s",
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vg_path);
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return 0;
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}
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return pool_strdup(fid->cmd->mem, vg_path);
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}
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struct list *create_pv_list(struct pool *mem,
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struct volume_group *vg,
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int argc, char **argv)
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{
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struct list *r;
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struct pv_list *pvl, *new_pvl;
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int i;
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/* Build up list of PVs */
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if (!(r = pool_alloc(mem, sizeof(*r)))) {
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log_error("Allocation of list failed");
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return NULL;
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}
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list_init(r);
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for (i = 0; i < argc; i++) {
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if (!(pvl = find_pv_in_vg(vg, argv[i]))) {
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log_err("Physical Volume %s not found in "
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"Volume Group %s", argv[i], vg->name);
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return NULL;
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}
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if (pvl->pv->pe_count == pvl->pv->pe_allocated) {
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log_err("No free extents on physical volume %s",
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argv[i]);
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continue;
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}
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if (!(new_pvl = pool_alloc(mem, sizeof(*new_pvl)))) {
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log_err("Unable to allocate physical volume list.");
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return NULL;
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}
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memcpy(new_pvl, pvl, sizeof(*new_pvl));
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list_add(r, &new_pvl->list);
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}
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return list_empty(r) ? r : NULL;
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}
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