mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-22 17:35:59 +03:00
1498bc8cc4
lvm1 and pool format do not support bootloader areas and we need to remove any existing associated bootloader areas when we read lvm1 and pool labels. This has its importance if we're converting from one format to another and we're reusing lvmcache in long-running commands (e.g. clvmd or lvm shell) and we need to make lvmcache consistent and valid for current format.
130 lines
3.0 KiB
C
130 lines
3.0 KiB
C
/*
|
|
* Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004-2006 Red Hat, Inc. 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "lib.h"
|
|
#include "lvm1-label.h"
|
|
#include "disk-rep.h"
|
|
#include "label.h"
|
|
#include "metadata.h"
|
|
#include "xlate.h"
|
|
#include "format1.h"
|
|
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
|
|
static void _not_supported(const char *op)
|
|
{
|
|
log_error("The '%s' operation is not supported for the lvm1 labeller.",
|
|
op);
|
|
}
|
|
|
|
static int _lvm1_can_handle(struct labeller *l __attribute__((unused)), void *buf, uint64_t sector)
|
|
{
|
|
struct pv_disk *pvd = (struct pv_disk *) buf;
|
|
uint32_t version;
|
|
|
|
/* LVM1 label must always be in first sector */
|
|
if (sector)
|
|
return 0;
|
|
|
|
version = xlate16(pvd->version);
|
|
|
|
if (pvd->id[0] == 'H' && pvd->id[1] == 'M' &&
|
|
(version == 1 || version == 2))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int _lvm1_write(struct label *label __attribute__((unused)), void *buf __attribute__((unused)))
|
|
{
|
|
_not_supported("write");
|
|
return 0;
|
|
}
|
|
|
|
static int _lvm1_read(struct labeller *l, struct device *dev, void *buf,
|
|
struct label **label)
|
|
{
|
|
struct pv_disk *pvd = (struct pv_disk *) buf;
|
|
struct vg_disk vgd;
|
|
struct lvmcache_info *info;
|
|
const char *vgid = FMT_LVM1_ORPHAN_VG_NAME;
|
|
const char *vgname = FMT_LVM1_ORPHAN_VG_NAME;
|
|
unsigned exported = 0;
|
|
|
|
munge_pvd(dev, pvd);
|
|
|
|
if (*pvd->vg_name) {
|
|
if (!read_vgd(dev, &vgd, pvd))
|
|
return_0;
|
|
vgid = (char *) vgd.vg_uuid;
|
|
vgname = (char *) pvd->vg_name;
|
|
exported = pvd->pv_status & VG_EXPORTED;
|
|
}
|
|
|
|
if (!(info = lvmcache_add(l, (char *)pvd->pv_uuid, dev, vgname, vgid,
|
|
exported)))
|
|
return_0;
|
|
*label = lvmcache_get_label(info);
|
|
|
|
lvmcache_set_device_size(info, ((uint64_t)xlate32(pvd->pv_size)) << SECTOR_SHIFT);
|
|
lvmcache_del_mdas(info);
|
|
lvmcache_del_bas(info);
|
|
lvmcache_make_valid(info);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _lvm1_initialise_label(struct labeller *l __attribute__((unused)), struct label *label)
|
|
{
|
|
strcpy(label->type, "LVM1");
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void _lvm1_destroy_label(struct labeller *l __attribute__((unused)), struct label *label __attribute__((unused)))
|
|
{
|
|
}
|
|
|
|
static void _lvm1_destroy(struct labeller *l)
|
|
{
|
|
dm_free(l);
|
|
}
|
|
|
|
struct label_ops _lvm1_ops = {
|
|
.can_handle = _lvm1_can_handle,
|
|
.write = _lvm1_write,
|
|
.read = _lvm1_read,
|
|
.verify = _lvm1_can_handle,
|
|
.initialise_label = _lvm1_initialise_label,
|
|
.destroy_label = _lvm1_destroy_label,
|
|
.destroy = _lvm1_destroy,
|
|
};
|
|
|
|
struct labeller *lvm1_labeller_create(struct format_type *fmt)
|
|
{
|
|
struct labeller *l;
|
|
|
|
if (!(l = dm_malloc(sizeof(*l)))) {
|
|
log_error("Couldn't allocate labeller object.");
|
|
return NULL;
|
|
}
|
|
|
|
l->ops = &_lvm1_ops;
|
|
l->fmt = fmt;
|
|
|
|
return l;
|
|
}
|