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/*
* Copyright (C) 2001 Sistina Software
*
* LVM is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* LVM is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with LVM; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#include "tools.h"
static int vgreduce_single(struct volume_group *vg, struct physical_volume *pv);
int vgreduce(int argc, char **argv)
{
struct volume_group *vg;
char *vg_name;
if (!argc) {
log_error("Please give volume group name and "
"physical volume paths");
return EINVALID_CMD_LINE;
}
if (argc == 1 && !arg_count(all_ARG)) {
log_error("Please enter physical volume paths or option -a");
return EINVALID_CMD_LINE;
}
if (argc > 1 && arg_count(all_ARG)) {
log_error("Option -a and physical volume paths mutually "
"exclusive");
return EINVALID_CMD_LINE;
}
vg_name = argv[0];
argv++;
argc--;
log_verbose("Finding volume group %s", vg_name);
if (!(vg = fid->ops->vg_read(fid, vg_name))) {
log_error("Volume group %s doesn't exist", vg_name);
return ECMD_FAILED;
}
if (vg->status & EXPORTED_VG) {
log_error("Volume group %s is exported", vg->name);
return ECMD_FAILED;
}
if (!(vg->status & LVM_WRITE)) {
log_error("Volume group %s is read-only", vg_name);
return ECMD_FAILED;
}
if (!(vg->status & RESIZEABLE_VG)) {
log_error("Volume group %s is not reducable", vg_name);
return ECMD_FAILED;
}
/* FIXME: Pass private structure through to all these functions */
/* and update in batch here? */
return process_each_pv(argc, argv, vg, vgreduce_single);
/******* FIXME
log_error ("no empty physical volumes found in volume group \"%s\"", vg_name);
log_verbose
("volume group \"%s\" will be reduced by %d physical volume%s",
vg_name, np, np > 1 ? "s" : "");
log_verbose ("reducing volume group \"%s\" by physical volume \"%s\"", vg_name, pv_names[p]);
log_print
("volume group \"%s\" %ssuccessfully reduced by physical volume%s:",
vg_name, error > 0 ? "NOT " : "", p > 1 ? "s" : "");
log_print("%s", pv_this[p]->pv_name);
********/
}
/* Or take pv_name instead? */
static int vgreduce_single(struct volume_group *vg, struct physical_volume *pv)
{
struct pv_list *pvl;
const char *name = dev_name(pv->dev);
if (pv->pe_allocated) {
log_error("Physical volume %s still in use", name);
return ECMD_FAILED;
}
/********* FIXME: Is this unnecessary after checking pe_allocated?
if (pv->lv_cur > 0) {
log_error ("can't reduce volume group \"%s\" by used physical volume \"%s\"", vg_name, error_pv_name);
}
*********/
if (vg->pv_count == 1) {
log_error("Can't remove final physical volume %s from "
"volume group %s", name, vg->name);
return ECMD_FAILED;
}
pvl = find_pv_in_vg(vg, name);
if (!archive(vg))
return ECMD_FAILED;
log_verbose("Removing %s from volume group %s", name, vg->name);
if (pvl)
list_del(&pvl->list);
*pv->vg_name = '\0';
vg->pv_count--;
vg->free_count -= pv->pe_count - pv->pe_allocated;
vg->extent_count -= pv->pe_count;
if (!(fid->ops->vg_write(fid, vg))) {
log_error("Removal of physical volume %s from %s failed",
name, vg->name);
return ECMD_FAILED;
}
if (!fid->ops->pv_write(fid, pv)) {
log_error("Failed to clear metadata from physical volume %s "
"after removal from %s", name, vg->name);
return ECMD_FAILED;
}
backup(vg);
log_print("Removed %s from volume group %s", name, vg->name);
return 0;
}
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