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lvm2/tools/vgchange.c
Alasdair Kergon 0092790c7d o ACTIVE is no longer a status flag - lv_active() used to check if an LV
is active in the device-mapper.
o Many operations can be carried out regardless of whether the VG is
  active or not.
o vgscan does not activate anything - use vgchange.
o Change lvrename to support renaming of active LVs.
o Remove '//' appearing in some pathnames.
o Dummy lv_check_segments() for compilation.
2002-01-10 23:21:07 +00:00

186 lines
4.8 KiB
C

/*
* 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 vgchange_single(const char *vg_name);
void vgchange_available(struct volume_group *vg);
void vgchange_resizeable(struct volume_group *vg);
void vgchange_logicalvolume(struct volume_group *vg);
int vgchange(int argc, char **argv)
{
if (!(arg_count(available_ARG) + arg_count(logicalvolume_ARG) +
arg_count(resizeable_ARG))) {
log_error("One of -a, -l or -x options required");
return EINVALID_CMD_LINE;
}
if (arg_count(available_ARG) + arg_count(logicalvolume_ARG) +
arg_count(resizeable_ARG) > 1) {
log_error("Only one of -a, -l or -x options allowed");
return EINVALID_CMD_LINE;
}
if (arg_count(available_ARG) == 1 && arg_count(autobackup_ARG)) {
log_error("-A option not necessary with -a option");
return EINVALID_CMD_LINE;
}
return process_each_vg(argc, argv, &vgchange_single);
}
static int vgchange_single(const char *vg_name)
{
struct volume_group *vg;
if (!(vg = fid->ops->vg_read(fid, vg_name))) {
log_error("Unable to find volume group %s", vg_name);
return ECMD_FAILED;
}
if (vg->status & EXPORTED_VG) {
log_error("Volume group %s is exported", vg_name);
return ECMD_FAILED;
}
if (arg_count(available_ARG))
vgchange_available(vg);
if (arg_count(resizeable_ARG))
vgchange_resizeable(vg);
if (arg_count(logicalvolume_ARG))
vgchange_logicalvolume(vg);
return 0;
}
void vgchange_available(struct volume_group *vg)
{
int lv_open, lv_active;
int available = !strcmp(arg_str_value(available_ARG, "n"), "y");
/* FIXME: Force argument to deactivate them? */
if (!available && (lv_open = lvs_in_vg_opened(vg))) {
log_error("Can't deactivate volume group '%s' with %d open "
"logical volume(s)", vg->name, lv_open);
return;
}
if (available && (lv_active = lvs_in_vg_activated(vg)))
log_verbose("%d logical volume(s) in volume group %s "
"already active", lv_active, vg->name);
if (available && (lv_open = activate_lvs_in_vg(vg)))
log_verbose("Activated %d logical volumes in "
"volume group %s", lv_open, vg->name);
if (!available && (lv_open = deactivate_lvs_in_vg(vg)))
log_verbose("Deactivated %d logical volumes in "
"volume group %s", lv_open, vg->name);
log_print("Volume group %s updated", vg->name);
return;
}
void vgchange_resizeable(struct volume_group *vg)
{
int resizeable = !strcmp(arg_str_value(resizeable_ARG, "n"), "y");
if (resizeable && (vg->status & RESIZEABLE_VG)) {
log_error("Volume group %s is already resizeable", vg->name);
return;
}
if (!resizeable && !(vg->status & RESIZEABLE_VG)) {
log_error("Volume group %s is already not resizeable",
vg->name);
return;
}
if (!archive(vg))
return;
if (resizeable)
vg->status |= RESIZEABLE_VG;
else
vg->status &= ~RESIZEABLE_VG;
if (!fid->ops->vg_write(fid, vg))
return;
backup(vg);
log_print("Volume group %s successfully changed", vg->name);
return;
}
void vgchange_logicalvolume(struct volume_group *vg)
{
int max_lv = arg_int_value(logicalvolume_ARG, 0);
if (!(vg->status & RESIZEABLE_VG)) {
log_error("Volume group '%s' must be resizeable "
"to change MaxLogicalVolume", vg->name);
return;
}
if (max_lv < vg->lv_count) {
log_error("MaxLogicalVolume is less than the current number "
"%d of logical volume(s) for '%s'", vg->lv_count,
vg->name);
return;
}
/************** FIXME To be handled within vg_write
for (p = 0, pp = *vg->pv; p < vg->pv_max; p++, pp++) {
if (pp != NULL) {
pp->lv_on_disk.size =
round_up((max_lv + 1) * sizeof(lv_disk_t), LVM_VGDA_ALIGN);
pe_on_disk_base_sav = pp->pe_on_disk.base;
pp->pe_on_disk.base = pp->lv_on_disk.base + pp->lv_on_disk.size;
pp->pe_on_disk.size -= pp->pe_on_disk.base - pe_on_disk_base_sav;
if (LVM_VGDA_SIZE(pp) / SECTOR_SIZE >
(pp->pv_size & ~LVM_PE_ALIGN) - pp->pe_total * pp->pe_size) {
log_error("extended VGDA would overlap first physical extent");
return LVM_E_PE_OVERLAP;
}
}
}
****************/
if (!archive(vg))
return;
vg->max_lv = max_lv;
if (!fid->ops->vg_write(fid, vg))
return;
backup(vg);
log_print("Volume group %s successfully changed", vg->name);
return;
}