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/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
* Copyright (C) 2005 Zak Kipling. 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 "metadata.h"
struct pvresize_params {
uint64_t new_size;
unsigned done;
unsigned total;
};
static int _pv_resize_single(struct cmd_context *cmd,
struct volume_group *vg,
struct physical_volume *pv,
const uint64_t new_size)
{
struct pv_list *pvl;
uint64_t size = 0;
int r = 0;
const char *pv_name = pv_dev_name(pv);
const char *vg_name = pv_vg_name(pv);
struct volume_group *old_vg = vg;
int vg_needs_pv_write = 0;
if (is_orphan_vg(vg_name)) {
if (!lock_vol(cmd, vg_name, LCK_VG_WRITE)) {
log_error("Can't get lock for orphans");
return 0;
}
if (!(pv = pv_read(cmd, pv_name, 1, 0))) {
unlock_vg(cmd, vg_name);
log_error("Unable to read PV \"%s\"", pv_name);
return 0;
}
} else {
vg = vg_read_for_update(cmd, vg_name, NULL, 0);
if (vg_read_error(vg)) {
release_vg(vg);
log_error("Unable to read volume group \"%s\".",
vg_name);
return 0;
}
if (!(pvl = find_pv_in_vg(vg, pv_name))) {
log_error("Unable to find \"%s\" in volume group \"%s\"",
pv_name, vg->name);
goto out;
}
pv = pvl->pv;
if (!archive(vg))
goto out;
}
if (!(pv->fmt->features & FMT_RESIZE_PV)) {
log_error("Physical volume %s format does not support resizing.",
pv_name);
goto out;
}
/* Get new size */
if (!dev_get_size(pv_dev(pv), &size)) {
log_error("%s: Couldn't get size.", pv_name);
goto out;
}
if (new_size) {
if (new_size > size)
log_warn("WARNING: %s: Overriding real size. "
"You could lose data.", pv_name);
log_verbose("%s: Pretending size is %" PRIu64 " not %" PRIu64
" sectors.", pv_name, new_size, pv_size(pv));
size = new_size;
}
log_verbose("Resizing volume \"%s\" to %" PRIu64 " sectors.",
pv_name, pv_size(pv));
if (!pv_resize(pv, vg, size))
goto_out;
log_verbose("Updating physical volume \"%s\"", pv_name);
/* Write PV label only if this an orphan PV or it has 2nd mda. */
if ((is_orphan_vg(vg_name) ||
(vg_needs_pv_write = (fid_get_mda_indexed(vg->fid,
(const char *) &pv->id, ID_LEN, 1) != NULL))) &&
!pv_write(cmd, pv, 1)) {
log_error("Failed to store physical volume \"%s\"",
pv_name);
goto out;
}
if (!is_orphan_vg(vg_name)) {
if (!vg_write(vg) || !vg_commit(vg)) {
log_error("Failed to store physical volume \"%s\" in "
"volume group \"%s\"", pv_name, vg_name);
goto out;
}
backup(vg);
}
log_print_unless_silent("Physical volume \"%s\" changed", pv_name);
r = 1;
out:
if (!r && vg_needs_pv_write)
log_error("Use pvcreate and vgcfgrestore "
"to repair from archived metadata.");
unlock_vg(cmd, vg_name);
if (is_orphan_vg(vg_name))
free_pv_fid(pv);
if (!old_vg)
release_vg(vg);
return r;
}
static int _pvresize_single(struct cmd_context *cmd,
struct volume_group *vg,
struct physical_volume *pv,
void *handle)
{
struct pvresize_params *params = (struct pvresize_params *) handle;
params->total++;
if (!_pv_resize_single(cmd, vg, pv, params->new_size)) {
stack;
return ECMD_FAILED;
}
params->done++;
return ECMD_PROCESSED;
}
int pvresize(struct cmd_context *cmd, int argc, char **argv)
{
struct pvresize_params params;
int ret;
if (!argc) {
log_error("Please supply physical volume(s)");
return EINVALID_CMD_LINE;
}
if (arg_sign_value(cmd, physicalvolumesize_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Physical volume size may not be negative");
return 0;
}
params.new_size = arg_uint64_value(cmd, physicalvolumesize_ARG,
UINT64_C(0));
params.done = 0;
params.total = 0;
ret = process_each_pv(cmd, argc, argv, NULL, READ_FOR_UPDATE, 0, ¶ms,
_pvresize_single);
log_print_unless_silent("%d physical volume(s) resized / %d physical volume(s) "
"not resized", params.done, params.total - params.done);
return ret;
}
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