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Code Releases Activity

Factor out adjusted_mirror_region_size()

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This commit is contained in:
Alasdair Kergon 2005-08-12 19:23:08 +00:00
parent 197632009b
commit bfd31e94d5
4 changed files with 27 additions and 9 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.01.15 -
=================================
Factor out adjusted_mirror_region_size().
Move compose_log_line() into mirror directory.
Factor out _get_library_path().
Don't kill idling clvmd threads.

2
lib/metadata/metadata.h
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@ -543,6 +543,8 @@ int vg_remove_snapshot(struct logical_volume *cow);
* Mirroring functions
*/
struct alloc_handle;
uint32_t adjusted_mirror_region_size(uint32_t extent_size, uint32_t extents,
uint32_t region_size);
int create_mirror_layers(struct alloc_handle *ah,
uint32_t first_area,
uint32_t num_mirrors,

20
lib/metadata/mirror.c
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@ -22,6 +22,26 @@
#include "lv_alloc.h"
#include "lvm-string.h"
/*
* Ensure region size is compatible with volume size.
*/
uint32_t adjusted_mirror_region_size(uint32_t extent_size, uint32_t extents,
uint32_t region_size)
{
uint32_t region_max;
region_max = (1 << (ffs(extents) - 1)) * extent_size;
if (region_max < region_size) {
region_size = region_max;
log_print("Using reduced mirror region size of %" PRIu32
" sectors", region_max);
return region_max;
}
return region_size;
}
/*
* Reduce mirrored_seg to num_mirrors images.
*/

13
tools/lvcreate.c
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@ -416,7 +416,7 @@ static int _read_params(struct lvcreate_params *lp, struct cmd_context *cmd,
static int _lvcreate(struct cmd_context *cmd, struct lvcreate_params *lp)
{
uint32_t size_rest, region_max;
uint32_t size_rest;
uint32_t status = 0;
uint64_t tmp_size;
struct volume_group *vg;
@ -572,14 +572,9 @@ static int _lvcreate(struct cmd_context *cmd, struct lvcreate_params *lp)
}
if (lp->mirrors > 1) {
/* FIXME Adjust lp->region_size if necessary */
region_max = (1 << (ffs(lp->extents) - 1)) * vg->extent_size;
if (region_max < lp->region_size) {
lp->region_size = region_max;
log_print("Using reduced mirror region size of %" PRIu32
" sectors", lp->region_size);
}
lp->region_size = adjusted_mirror_region_size(vg->extent_size,
lp->extents,
lp->region_size);
/* FIXME Calculate how many extents needed for the log */