shaba/lvm2
1
0
Fork 0
mirror of git://sourceware.org/git/lvm2.git synced 2025-03-30 10:50:34 +03:00
Code Releases Activity

Some basic checking for presence of device-mapper targets.

Browse Source
This commit is contained in:
Alasdair Kergon 2004-05-05 18:11:43 +00:00
parent cb919290c2
commit 224565478c
4 changed files with 107 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
lib/activate/dev_manager.c
View File

@ -2034,6 +2034,58 @@ static int _remove_suspended_lvs(struct dev_manager *dm,
return 1;
}
static int _targets_present(struct dev_manager *dm, struct list *lvs)
{
struct logical_volume *lv;
struct list *lvh;
struct segment_type *segtype;
int snapshots = 0, mirrors = 0;
list_iterate(lvh, lvs) {
lv = list_item(lvh, struct lv_list)->lv;
if (!snapshots)
if (lv_is_cow(lv) || lv_is_origin(lv))
snapshots = 1;
if (!mirrors)
if (lv->status & PVMOVE)
mirrors = 1;
}
if (mirrors) {
if (!(segtype = get_segtype_from_string(dm->cmd, "mirror"))) {
log_error("Can't expand LV: Mirror support "
"missing from tools?");
return 0;
}
if (!segtype->ops->target_present ||
!segtype->ops->target_present()) {
log_error("Can't expand LV: Mirror support missing "
"from kernel?");
return 0;
}
}
if (snapshots) {
if (!(segtype = get_segtype_from_string(dm->cmd, "snapshot"))) {
log_error("Can't expand LV: Snapshot support "
"missing from tools?");
return 0;
}
if (!segtype->ops->target_present ||
!segtype->ops->target_present()) {
log_error("Can't expand LV: Snapshot support missing "
"from kernel?");
return 0;
}
}
return 1;
}
static int _fill_in_active_list(struct dev_manager *dm, struct volume_group *vg)
{
char *dlid;
@ -2116,6 +2168,12 @@ static int _action(struct dev_manager *dm, struct logical_volume *lv,
}
}
if (!_targets_present(dm, &dm->active_list) ||
!_targets_present(dm, &dm->reload_list)) {
stack;
return 0;
}
if (!_execute(dm, lv->vg)) {
stack;
return 0;

15
lib/mirror/mirrored.c
View File

@ -26,6 +26,7 @@
#include "defaults.h"
#include "lvm-string.h"
#include "targets.h"
#include "activate.h"
enum {
MIRR_DISABLED,
@ -192,6 +193,19 @@ static int _target_percent(void **target_state, struct pool *mem,
return 1;
}
static int _target_present(void)
{
static int checked = 0;
static int present = 0;
if (!checked)
present = target_present("mirror");
checked = 1;
return present;
}
#endif
static void _destroy(const struct segment_type *segtype)
@ -208,6 +222,7 @@ static struct segtype_handler _mirrored_ops = {
#ifdef DEVMAPPER_SUPPORT
compose_target_line:_compose_target_line,
target_percent:_target_percent,
target_present:_target_present,
#endif
destroy:_destroy,
};

20
lib/snapshot/snapshot.c
View File

@ -21,6 +21,7 @@
#include "segtypes.h"
#include "text_export.h"
#include "config.h"
#include "activate.h"
static const char *_name(const struct lv_segment *seg)
{
@ -86,6 +87,7 @@ static int _text_export(const struct lv_segment *seg, struct formatter *f)
return 1;
}
#ifdef DEVMAPPER_SUPPORT
static int _target_percent(void **target_state, struct pool *mem,
struct config_tree *cft, struct lv_segment *seg,
char *params, uint64_t *total_numerator,
@ -108,6 +110,21 @@ static int _target_percent(void **target_state, struct pool *mem,
return 1;
}
static int _target_present(void)
{
static int checked = 0;
static int present = 0;
if (!checked)
present = target_present("snapshot") &&
target_present("snapshot-origin");
checked = 1;
return present;
}
#endif
static void _destroy(const struct segment_type *segtype)
{
dbg_free((void *) segtype);
@ -117,7 +134,10 @@ static struct segtype_handler _snapshot_ops = {
name:_name,
text_import:_text_import,
text_export:_text_export,
#ifdef DEVMAPPER_SUPPORT
target_percent:_target_percent,
target_present:_target_present,
#endif
destroy:_destroy,
};

14
lib/striped/striped.c
View File

@ -25,6 +25,7 @@
#include "str_list.h"
#include "targets.h"
#include "lvm-string.h"
#include "activate.h"
static const char *_name(const struct lv_segment *seg)
{
@ -167,6 +168,18 @@ static int _compose_target_line(struct dev_manager *dm, struct pool *mem,
return compose_areas_line(dm, seg, params, paramsize, pos, 0u,
seg->area_count);
}
static int _target_present(void)
{
static int checked = 0;
static int present = 0;
if (!checked)
present = target_present("linear") && target_present("striped");
checked = 1;
return present;
}
#endif
static void _destroy(const struct segment_type *segtype)
@ -183,6 +196,7 @@ static struct segtype_handler _striped_ops = {
merge_segments:_merge_segments,
#ifdef DEVMAPPER_SUPPORT
compose_target_line:_compose_target_line,
target_present:_target_present,
#endif
destroy:_destroy,
};