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mirror of git://sourceware.org/git/lvm2.git synced 2024-12-21 13:34:40 +03:00

o Put in the pv_hash which stores the pv section name -> pv struct mapping.

This commit is contained in:
Joe Thornber 2002-01-11 11:09:12 +00:00
parent 493656dd3c
commit ee27c57b58

View File

@ -9,11 +9,12 @@
#include "pool.h"
#include "log.h"
#include "uuid.h"
#include "hash.h"
typedef int (*section_fn)(struct pool *mem,
struct volume_group *vg, struct config_node *pvn,
struct config_node *vgn);
struct config_node *vgn, struct hash_table *pv_hash);
#define _read_int32(root, path, result) \
get_config_uint32(root, path, '/', result)
@ -46,7 +47,8 @@ static int _read_id(struct id *id, struct config_node *cn, const char *path)
static int _read_pv(struct pool *mem,
struct volume_group *vg, struct config_node *pvn,
struct config_node *vgn)
struct config_node *vgn,
struct hash_table *pv_hash)
{
struct physical_volume *pv;
struct pv_list *pvl;
@ -103,6 +105,16 @@ static int _read_pv(struct pool *mem,
pv->pe_allocated = 0;
list_add(&vg->pvs, &pvl->list);
/*
* Add the pv to the pv hash for quick lookup when we read
* the lv segments.
*/
if (!hash_insert(pv_hash, pvn->key, pv)) {
stack;
return 0;
}
return 1;
}
@ -125,7 +137,8 @@ static void _insert_segment(struct logical_volume *lv,
}
static int _read_segment(struct pool *mem, struct volume_group *vg,
struct logical_volume *lv, struct config_node *sn)
struct logical_volume *lv, struct config_node *sn,
struct hash_table *pv_hash)
{
int s;
struct stripe_segment *seg;
@ -190,14 +203,12 @@ static int _read_segment(struct pool *mem, struct volume_group *vg,
return 0;
}
#if 0
if (!(pv = _find_pv(cv->v.str, pv_hash))) {
if (!(pv = hash_lookup(pv_hash, cv->v.str))) {
log_err("Couldn't find physical volume (%s) for "
"segment '%s'.",
cn->v->v.str ? cn->v->v.str : "NULL", sn->key);
return 0;
}
#endif
seg->area[s].pv = pv;
@ -238,7 +249,8 @@ static int _read_segment(struct pool *mem, struct volume_group *vg,
}
static int _read_segments(struct pool *mem, struct volume_group *vg,
struct logical_volume *lv, struct config_node *lvn)
struct logical_volume *lv, struct config_node *lvn,
struct hash_table *pv_hash)
{
struct config_node *sn;
int count = 0, seg_count;
@ -249,7 +261,7 @@ static int _read_segments(struct pool *mem, struct volume_group *vg,
* All sub-sections are assumed to be segments.
*/
if (sn->v) {
if (!_read_segment(mem, vg, lv, sn)) {
if (!_read_segment(mem, vg, lv, sn, pv_hash)) {
stack;
return 0;
}
@ -290,7 +302,7 @@ static int _read_segments(struct pool *mem, struct volume_group *vg,
static int _read_lv(struct pool *mem,
struct volume_group *vg, struct config_node *lvn,
struct config_node *vgn)
struct config_node *vgn, struct hash_table *pv_hash)
{
struct logical_volume *lv;
struct lv_list *lvl;
@ -327,7 +339,7 @@ static int _read_lv(struct pool *mem,
}
list_init(&lv->segments);
if (!_read_segments(mem, vg, lv, lvn)) {
if (!_read_segments(mem, vg, lv, lvn, pv_hash)) {
stack;
return 0;
}
@ -339,7 +351,8 @@ static int _read_lv(struct pool *mem,
static int _read_sections(const char *section, section_fn fn,
struct pool *mem,
struct volume_group *vg, struct config_node *vgn)
struct volume_group *vg, struct config_node *vgn,
struct hash_table *pv_hash)
{
struct config_node *n;
@ -349,7 +362,7 @@ static int _read_sections(const char *section, section_fn fn,
}
for (n = n->child; n; n = n->sib) {
if (!fn(mem, vg, vgn, n)) {
if (!fn(mem, vg, vgn, n, pv_hash)) {
stack;
return 0;
}
@ -362,6 +375,7 @@ static struct volume_group *_read_vg(struct pool *mem, struct config_file *cf)
{
struct config_node *vgn = cf->root, *cn;
struct volume_group *vg;
struct hash_table *pv_hash = NULL;
if (!vgn) {
log_err("Couldn't not find volume group.");
@ -418,26 +432,42 @@ static struct volume_group *_read_vg(struct pool *mem, struct config_file *cf)
goto bad;
}
/*
* The pv hash memoises the pv section names -> pv
* structures.
*/
if (!(pv_hash = hash_create(32))) {
log_err("Couldn't create hash table.");
goto bad;
}
list_init(&vg->pvs);
if (!_read_sections("physical_volumes", _read_pv, mem, vg, vgn)) {
if (!_read_sections("physical_volumes", _read_pv, mem, vg,
vgn, pv_hash)) {
log_err("Couldn't read all physical volumes for volume "
"group.");
goto bad;
}
list_init(&vg->lvs);
if (!_read_sections("logical_volumes", _read_lv, mem, vg, vgn)) {
if (!_read_sections("logical_volumes", _read_lv, mem, vg,
vgn, pv_hash)) {
log_err("Couldn't read all logical volumes for volume "
"group.");
goto bad;
}
hash_destroy(pv_hash);
/*
* Finished.
*/
return vg;
bad:
if (pv_hash)
hash_destroy(pv_hash);
pool_free(mem, vg);
return NULL;
}