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lvm2/tools/pvchange.c

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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"
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int pvchange_single(struct physical_volume *pv);
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int pvchange(int argc, char **argv)
{
int opt = 0;
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int done = 0;
int total = 0;
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struct physical_volume *pv;
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char *pv_name;
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struct list *pvh, *pvs;
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if (arg_count(allocatable_ARG) == 0) {
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log_error("Please give the x option");
return EINVALID_CMD_LINE;
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}
if (!(arg_count(all_ARG)) && !argc) {
log_error("Please give a physical volume path");
return EINVALID_CMD_LINE;
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}
if (arg_count(all_ARG) && argc) {
log_error("Option a and PhysicalVolumePath are exclusive");
return EINVALID_CMD_LINE;
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}
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if (argc) {
log_verbose("Using physical volume(s) on command line");
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for (; opt < argc; opt++) {
pv_name = argv[opt];
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if (!(pv = fid->ops->pv_read(fid, pv_name))) {
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log_error("Failed to read physical volume %s",
pv_name);
continue;
}
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total++;
done += pvchange_single(pv);
}
} else {
log_verbose("Scanning for physical volume names");
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if (!(pvs = fid->ops->get_pvs(fid))) {
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return ECMD_FAILED;
}
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list_iterate(pvh, pvs) {
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total++;
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done += pvchange_single(
&list_item(pvh, struct pv_list)->pv);
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}
}
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log_print("%d physical volume(s) changed / %d physical volume(s) "
"not changed", done, total - done);
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return 0;
}
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int pvchange_single(struct physical_volume *pv)
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{
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struct volume_group *vg = NULL;
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struct list *pvh;
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const char *pv_name = dev_name(pv->dev);
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int allocatable = !strcmp(arg_str_value(allocatable_ARG, "n"), "y");
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/* If in a VG, must change using volume group. Pointless. */
/* FIXME: Provide a direct pv_write_pv that *only* touches PV structs*/
if (*pv->vg_name) {
log_verbose("Finding volume group of physical volume %s",
pv_name);
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if (!(vg = fid->ops->vg_read(fid, pv->vg_name))) {
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log_error("Unable to find volume group of %s", pv_name);
return 0;
}
if (!(pvh = find_pv_in_vg(vg, pv_name))) {
log_error("Unable to find %s in volume group %s",
pv_name, vg->name);
return 0;
}
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pv = &list_item(pvh, struct pv_list)->pv;
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if (!archive(vg))
return 0;
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}
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/* change allocatability for a PV */
if (allocatable && (pv->status & ALLOCATABLE_PV)) {
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log_error("Physical volume %s is already allocatable", pv_name);
return 0;
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}
if (!allocatable && !(pv->status & ALLOCATABLE_PV)) {
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log_error("Physical volume %s is already unallocatable",
pv_name);
return 0;
}
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if (allocatable) {
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log_verbose("Setting physical volume %s allocatable", pv_name);
pv->status |= ALLOCATABLE_PV;
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} else {
log_verbose("Setting physical volume %s NOT allocatable",
pv_name);
pv->status &= ~ALLOCATABLE_PV;
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}
log_verbose("Updating physical volume %s", pv_name);
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if (*pv->vg_name) {
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if (!(fid->ops->vg_write(fid,vg))) {
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log_error("Failed to store physical volume %s in "
"volume group %s", pv_name, vg->name);
return 0;
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}
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backup(vg);
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} else {
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if (!(fid->ops->pv_write(fid, pv))) {
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log_error("Failed to store physical volume %s",
pv_name);
return 0;
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}
}
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log_print("Physical volume %s changed", pv_name);
return 1;
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}