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lv_manip: add new internal api function

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This commit is contained in:
Zdenek Kabelac 2018-06-23 11:35:22 +02:00
parent 8949903fbb
commit 9c0d92d957
2 changed files with 12 additions and 11 deletions
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21
lib/metadata/lv_manip.c
View File

@ -1219,17 +1219,19 @@ int set_lv_segment_area_lv(struct lv_segment *seg, uint32_t area_num,
/*
* Prepare for adding parallel areas to an existing segment.
*/
static int _lv_segment_add_areas(struct logical_volume *lv,
struct lv_segment *seg,
uint32_t new_area_count)
int add_lv_segment_areas(struct lv_segment *seg, uint32_t new_area_count)
{
struct lv_segment_area *newareas;
uint32_t areas_sz = new_area_count * sizeof(*newareas);
if (!(newareas = dm_pool_zalloc(lv->vg->cmd->mem, areas_sz)))
if (!(newareas = dm_pool_zalloc(seg->lv->vg->vgmem, areas_sz))) {
log_error("Failed to allocate widened LV segment for %s.",
display_lvname(seg->lv));
return_0;
}
memcpy(newareas, seg->areas, seg->area_count * sizeof(*seg->areas));
if (seg->area_count)
memcpy(newareas, seg->areas, seg->area_count * sizeof(*seg->areas));
seg->areas = newareas;
seg->area_count = new_area_count;
@ -3766,7 +3768,7 @@ int lv_add_mirror_areas(struct alloc_handle *ah,
old_area_count = seg->area_count;
new_area_count = old_area_count + ah->area_count;
if (!_lv_segment_add_areas(lv, seg, new_area_count))
if (!add_lv_segment_areas(seg, new_area_count))
return_0;
for (s = 0; s < ah->area_count; s++) {
@ -3818,11 +3820,8 @@ int lv_add_mirror_lvs(struct logical_volume *lv,
old_area_count = seg->area_count;
new_area_count = old_area_count + num_extra_areas;
if (!_lv_segment_add_areas(lv, seg, new_area_count)) {
log_error("Failed to allocate widened LV segment for %s.",
display_lvname(lv));
return 0;
}
if (!add_lv_segment_areas(seg, new_area_count))
return_0;
for (m = 0; m < old_area_count; m++)
seg_lv(seg, m)->status |= status;

2
lib/metadata/metadata.h
View File

@ -445,6 +445,8 @@ int for_each_sub_lv(struct logical_volume *lv,
int move_lv_segments(struct logical_volume *lv_to,
struct logical_volume *lv_from,
uint64_t set_status, uint64_t reset_status);
/* Widen existing segment areas */
int add_lv_segment_areas(struct lv_segment *seg, uint32_t new_area_count);
/*
* Calculate readahead from underlying PV devices