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Add lv_read_ahead and lv_kernel_read_ahead 'get' functions.

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This commit is contained in:
Dave Wysochanski 2010-10-21 14:49:31 +00:00
parent f1fc310730
commit d53d92f2e1
4 changed files with 15 additions and 5 deletions
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9
lib/metadata/lv.c
View File

@ -20,6 +20,15 @@
#include "segtype.h"
#include "str_list.h"
uint32_t lv_kernel_read_ahead(const struct logical_volume *lv)
{
struct lvinfo info;
if (!lv_info(lv->vg->cmd, lv, 0, &info, 0, 1) || !info.exists)
return UINT32_MAX;
return info.read_ahead;
}
char *lv_origin_dup(struct dm_pool *mem, const struct logical_volume *lv)
{
if (lv_is_cow(lv))

1
lib/metadata/lv.h
View File

@ -62,5 +62,6 @@ char *lv_mirror_log_dup(struct dm_pool *mem, const struct logical_volume *lv);
char *lv_modules_dup(struct dm_pool *mem, const struct logical_volume *lv);
char *lv_name_dup(struct dm_pool *mem, const struct logical_volume *lv);
char *lv_origin_dup(struct dm_pool *mem, const struct logical_volume *lv);
uint32_t lv_kernel_read_ahead(const struct logical_volume *lv);
#endif

4
lib/report/properties.c
View File

@ -109,13 +109,13 @@ GET_LV_NUM_PROPERTY_FN(lv_major, lv->major)
#define _lv_major_set _not_implemented_set
GET_LV_NUM_PROPERTY_FN(lv_minor, lv->minor)
#define _lv_minor_set _not_implemented_set
#define _lv_read_ahead_get _not_implemented_get
GET_LV_NUM_PROPERTY_FN(lv_read_ahead, lv->read_ahead * SECTOR_SIZE)
#define _lv_read_ahead_set _not_implemented_set
GET_LV_NUM_PROPERTY_FN(lv_kernel_major, lv_kernel_major(lv))
#define _lv_kernel_major_set _not_implemented_set
GET_LV_NUM_PROPERTY_FN(lv_kernel_minor, lv_kernel_minor(lv))
#define _lv_kernel_minor_set _not_implemented_set
#define _lv_kernel_read_ahead_get _not_implemented_get
GET_LV_NUM_PROPERTY_FN(lv_kernel_read_ahead, lv_kernel_read_ahead(lv) * SECTOR_SIZE)
#define _lv_kernel_read_ahead_set _not_implemented_set
GET_LV_NUM_PROPERTY_FN(lv_size, lv->size * SECTOR_SIZE)
#define _lv_size_set _not_implemented_set

6
lib/report/report.c
View File

@ -469,12 +469,12 @@ static int _lvkreadahead_disp(struct dm_report *rh, struct dm_pool *mem,
void *private)
{
const struct logical_volume *lv = (const struct logical_volume *) data;
struct lvinfo info;
uint32_t read_ahead;
if (!lv_info(lv->vg->cmd, lv, 0, &info, 0, 1) || !info.exists)
if ((read_ahead = lv_kernel_read_ahead(lv)) == UINT32_MAX)
return dm_report_field_int32(rh, field, &_minusone32);
return _size32_disp(rh, mem, field, &info.read_ahead, private);
return _size32_disp(rh, mem, field, &read_ahead, private);
}
static int _vgsize_disp(struct dm_report *rh, struct dm_pool *mem,