mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-22 17:35:59 +03:00
ff2e8b0de6
Move code for creation of thin volume into a single place out of lv_extend(). This allows to drop extra pool arg for alloc_lv_segment() && lv_extend() and makes code more easier to read and follow.
287 lines
6.6 KiB
C
287 lines
6.6 KiB
C
/*
|
|
* Copyright (C) 1997-2004 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "lib.h"
|
|
#include "label.h"
|
|
#include "metadata.h"
|
|
#include "disk_rep.h"
|
|
#include "sptype_names.h"
|
|
#include "lv_alloc.h"
|
|
#include "pv_alloc.h"
|
|
#include "str_list.h"
|
|
#include "display.h"
|
|
#include "segtype.h"
|
|
#include "toolcontext.h"
|
|
|
|
/* This file contains only imports at the moment... */
|
|
|
|
int import_pool_vg(struct volume_group *vg, struct dm_pool *mem, struct dm_list *pls)
|
|
{
|
|
struct pool_list *pl;
|
|
|
|
dm_list_iterate_items(pl, pls) {
|
|
vg->extent_count +=
|
|
((pl->pd.pl_blocks) / POOL_PE_SIZE);
|
|
|
|
vg->free_count = vg->extent_count;
|
|
|
|
if (vg->name)
|
|
continue;
|
|
|
|
vg->name = dm_pool_strdup(mem, pl->pd.pl_pool_name);
|
|
get_pool_vg_uuid(&vg->id, &pl->pd);
|
|
vg->extent_size = POOL_PE_SIZE;
|
|
vg->status |= LVM_READ | LVM_WRITE | CLUSTERED | SHARED;
|
|
vg->max_lv = 1;
|
|
vg->max_pv = POOL_MAX_DEVICES;
|
|
vg->alloc = ALLOC_NORMAL;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
int import_pool_lvs(struct volume_group *vg, struct dm_pool *mem, struct dm_list *pls)
|
|
{
|
|
struct pool_list *pl;
|
|
struct logical_volume *lv;
|
|
|
|
if (!(lv = alloc_lv(mem)))
|
|
return_0;
|
|
|
|
lv->status = 0;
|
|
lv->alloc = ALLOC_NORMAL;
|
|
lv->size = 0;
|
|
lv->name = NULL;
|
|
lv->le_count = 0;
|
|
lv->read_ahead = vg->cmd->default_settings.read_ahead;
|
|
|
|
dm_list_iterate_items(pl, pls) {
|
|
lv->size += pl->pd.pl_blocks;
|
|
|
|
if (lv->name)
|
|
continue;
|
|
|
|
if (!(lv->name = dm_pool_strdup(mem, pl->pd.pl_pool_name)))
|
|
return_0;
|
|
|
|
get_pool_lv_uuid(lv->lvid.id, &pl->pd);
|
|
log_debug_metadata("Calculated lv uuid for lv %s: %s", lv->name,
|
|
lv->lvid.s);
|
|
|
|
lv->status |= VISIBLE_LV | LVM_READ | LVM_WRITE;
|
|
lv->major = POOL_MAJOR;
|
|
|
|
/* for pool a minor of 0 is dynamic */
|
|
if (pl->pd.pl_minor) {
|
|
lv->status |= FIXED_MINOR;
|
|
lv->minor = pl->pd.pl_minor + MINOR_OFFSET;
|
|
} else {
|
|
lv->minor = -1;
|
|
}
|
|
}
|
|
|
|
lv->le_count = lv->size / POOL_PE_SIZE;
|
|
|
|
return link_lv_to_vg(vg, lv);
|
|
}
|
|
|
|
int import_pool_pvs(const struct format_type *fmt, struct volume_group *vg,
|
|
struct dm_pool *mem, struct dm_list *pls)
|
|
{
|
|
struct pv_list *pvl;
|
|
struct pool_list *pl;
|
|
|
|
dm_list_iterate_items(pl, pls) {
|
|
if (!(pvl = dm_pool_zalloc(mem, sizeof(*pvl)))) {
|
|
log_error("Unable to allocate pv list structure");
|
|
return 0;
|
|
}
|
|
if (!(pvl->pv = dm_pool_zalloc(mem, sizeof(*pvl->pv)))) {
|
|
log_error("Unable to allocate pv structure");
|
|
return 0;
|
|
}
|
|
if (!import_pool_pv(fmt, mem, vg, pvl->pv, pl)) {
|
|
return 0;
|
|
}
|
|
pl->pv = pvl->pv;
|
|
pvl->mdas = NULL;
|
|
pvl->pe_ranges = NULL;
|
|
add_pvl_to_vgs(vg, pvl);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
int import_pool_pv(const struct format_type *fmt, struct dm_pool *mem,
|
|
struct volume_group *vg, struct physical_volume *pv,
|
|
struct pool_list *pl)
|
|
{
|
|
struct pool_disk *pd = &pl->pd;
|
|
|
|
memset(pv, 0, sizeof(*pv));
|
|
|
|
get_pool_pv_uuid(&pv->id, pd);
|
|
pv->fmt = fmt;
|
|
|
|
pv->dev = pl->dev;
|
|
if (!(pv->vg_name = dm_pool_strdup(mem, pd->pl_pool_name))) {
|
|
log_error("Unable to duplicate vg_name string");
|
|
return 0;
|
|
}
|
|
if (vg != NULL)
|
|
memcpy(&pv->vgid, &vg->id, sizeof(vg->id));
|
|
pv->status = 0;
|
|
pv->size = pd->pl_blocks;
|
|
pv->pe_size = POOL_PE_SIZE;
|
|
pv->pe_start = POOL_PE_START;
|
|
pv->pe_count = pv->size / POOL_PE_SIZE;
|
|
pv->pe_alloc_count = 0;
|
|
pv->pe_align = 0;
|
|
|
|
dm_list_init(&pv->tags);
|
|
dm_list_init(&pv->segments);
|
|
|
|
if (!alloc_pv_segment_whole_pv(mem, pv))
|
|
return_0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static const char *_cvt_sptype(uint32_t sptype)
|
|
{
|
|
int i;
|
|
for (i = 0; sptype_names[i].name[0]; i++) {
|
|
if (sptype == sptype_names[i].label) {
|
|
break;
|
|
}
|
|
}
|
|
log_debug_metadata("Found sptype %X and converted it to %s",
|
|
sptype, sptype_names[i].name);
|
|
return sptype_names[i].name;
|
|
}
|
|
|
|
static int _add_stripe_seg(struct dm_pool *mem,
|
|
struct user_subpool *usp, struct logical_volume *lv,
|
|
uint32_t *le_cur)
|
|
{
|
|
struct lv_segment *seg;
|
|
struct segment_type *segtype;
|
|
unsigned j;
|
|
uint32_t area_len;
|
|
|
|
if (usp->striping & (usp->striping - 1)) {
|
|
log_error("Stripe size must be a power of 2");
|
|
return 0;
|
|
}
|
|
|
|
area_len = (usp->devs[0].blocks) / POOL_PE_SIZE;
|
|
|
|
if (!(segtype = get_segtype_from_string(lv->vg->cmd,
|
|
"striped")))
|
|
return_0;
|
|
|
|
if (!(seg = alloc_lv_segment(segtype, lv, *le_cur,
|
|
area_len * usp->num_devs, 0,
|
|
usp->striping, NULL, usp->num_devs,
|
|
area_len, 0, 0, 0, NULL))) {
|
|
log_error("Unable to allocate striped lv_segment structure");
|
|
return 0;
|
|
}
|
|
|
|
for (j = 0; j < usp->num_devs; j++)
|
|
if (!set_lv_segment_area_pv(seg, j, usp->devs[j].pv, 0))
|
|
return_0;
|
|
|
|
/* add the subpool type to the segment tag list */
|
|
if (!str_list_add(mem, &seg->tags, _cvt_sptype(usp->type))) {
|
|
log_error("Allocation failed for str_list.");
|
|
return 0;
|
|
}
|
|
|
|
dm_list_add(&lv->segments, &seg->list);
|
|
|
|
*le_cur += seg->len;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int _add_linear_seg(struct dm_pool *mem,
|
|
struct user_subpool *usp, struct logical_volume *lv,
|
|
uint32_t *le_cur)
|
|
{
|
|
struct lv_segment *seg;
|
|
struct segment_type *segtype;
|
|
unsigned j;
|
|
uint32_t area_len;
|
|
|
|
if (!(segtype = get_segtype_from_string(lv->vg->cmd, "striped")))
|
|
return_0;
|
|
|
|
for (j = 0; j < usp->num_devs; j++) {
|
|
area_len = (usp->devs[j].blocks) / POOL_PE_SIZE;
|
|
|
|
if (!(seg = alloc_lv_segment(segtype, lv, *le_cur,
|
|
area_len, 0, usp->striping,
|
|
NULL, 1, area_len,
|
|
POOL_PE_SIZE, 0, 0, NULL))) {
|
|
log_error("Unable to allocate linear lv_segment "
|
|
"structure");
|
|
return 0;
|
|
}
|
|
|
|
/* add the subpool type to the segment tag list */
|
|
if (!str_list_add(mem, &seg->tags, _cvt_sptype(usp->type))) {
|
|
log_error("Allocation failed for str_list.");
|
|
return 0;
|
|
}
|
|
|
|
if (!set_lv_segment_area_pv(seg, 0, usp->devs[j].pv, 0))
|
|
return_0;
|
|
dm_list_add(&lv->segments, &seg->list);
|
|
|
|
*le_cur += seg->len;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
int import_pool_segments(struct dm_list *lvs, struct dm_pool *mem,
|
|
struct user_subpool *usp, int subpools)
|
|
{
|
|
struct lv_list *lvl;
|
|
struct logical_volume *lv;
|
|
uint32_t le_cur = 0;
|
|
int i;
|
|
|
|
dm_list_iterate_items(lvl, lvs) {
|
|
lv = lvl->lv;
|
|
|
|
if (lv->status & SNAPSHOT)
|
|
continue;
|
|
|
|
for (i = 0; i < subpools; i++) {
|
|
if (usp[i].striping) {
|
|
if (!_add_stripe_seg(mem, &usp[i], lv, &le_cur))
|
|
return_0;
|
|
} else {
|
|
if (!_add_linear_seg(mem, &usp[i], lv, &le_cur))
|
|
return_0;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|