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o lv_extend

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This commit is contained in:
Joe Thornber 2001-11-06 12:01:46 +00:00
parent 2cffd7d4e1
commit c84cc3847c
1 changed files with 38 additions and 7 deletions
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45
lib/metadata/lv_manip.c
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@ -131,8 +131,7 @@ static int _alloc_simple(struct logical_volume *lv,
* Chooses a correct allocation policy.
*/
static int _allocate(struct volume_group *vg, struct logical_volume *lv,
struct list *acceptable_pvs,
uint32_t allocated, uint32_t extents)
struct list *acceptable_pvs, uint32_t allocated)
{
int r = 0;
struct pool *scratch;
@ -163,7 +162,7 @@ static int _allocate(struct volume_group *vg, struct logical_volume *lv,
if (r) {
vg->lv_count++;
vg->free_count -= extents;
vg->free_count -= lv->le_count - allocated;
}
out:
@ -225,7 +224,7 @@ struct logical_volume *lv_create(struct io_space *ios,
goto bad;
}
if (!_allocate(vg, lv, acceptable_pvs, 0u, extents)) {
if (!_allocate(vg, lv, acceptable_pvs, 0u)) {
stack;
goto bad;
}
@ -262,9 +261,41 @@ int lv_reduce(struct io_space *ios,
int lv_extend(struct io_space *ios,
struct logical_volume *lv, uint32_t extents,
struct list *allocatable_pvs)
struct list *acceptable_pvs)
{
/* FIXME: finish */
log_err("not implemented");
struct pe_specifier *new_map;
struct logical_volume *new_lv;
if (!(new_map = pool_zalloc(ios->mem, sizeof(*new_map) *
(extents + lv->le_count)))) {
stack;
return 0;
}
memcpy(new_map, lv->map, sizeof(*new_map) * lv->le_count);
if (!(new_lv = pool_alloc(ios->mem, sizeof(*new_lv)))) {
pool_free(ios->mem, new_map);
stack;
return 0;
}
memcpy(new_lv, lv, sizeof(*lv));
new_lv->map = new_map;
new_lv->le_count += extents;
if (!_allocate(lv->vg, lv, acceptable_pvs, lv->le_count)) {
stack;
goto bad;
}
memcpy(lv, new_lv, sizeof(*lv));
/* now you see why new_lv had to be allocated last */
pool_free(ios->mem, new_lv);
return 1;
bad:
pool_free(ios->mem, new_map);
return 0;
}