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Add dmeventd monitoring for RAID devices.

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This commit is contained in:
Jonathan Earl Brassow
2011-08-11 05:00:20 +00:00
parent ff58e019d8
commit 3041b72f06
9 changed files with 239 additions and 5 deletions
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43
lib/raid/raid.c
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@@ -25,6 +25,7 @@
#include "activate.h"
#include "metadata.h"
#include "lv_alloc.h"
#include "defaults.h"
static const char *_raid_name(const struct lv_segment *seg)
{
@@ -261,6 +262,39 @@ static void _raid_destroy(struct segment_type *segtype)
dm_free((void *) segtype);
}
static const char *_get_raid_dso_path(struct cmd_context *cmd)
{
const char *config_str = find_config_tree_str(cmd, "dmeventd/raid_library",
DEFAULT_DMEVENTD_RAID_LIB);
return get_monitor_dso_path(cmd, config_str);
}
static int _raid_target_monitored(struct lv_segment *seg, int *pending)
{
struct cmd_context *cmd = seg->lv->vg->cmd;
const char *dso_path = _get_raid_dso_path(cmd);
return target_registered_with_dmeventd(cmd, dso_path, seg->lv, pending);
}
static int _raid_set_events(struct lv_segment *seg, int evmask, int set)
{
struct cmd_context *cmd = seg->lv->vg->cmd;
const char *dso_path = _get_raid_dso_path(cmd);
return target_register_events(cmd, dso_path, seg->lv, evmask, set, 0);
}
static int _raid_target_monitor_events(struct lv_segment *seg, int events)
{
return _raid_set_events(seg, events, 1);
}
static int _raid_target_unmonitor_events(struct lv_segment *seg, int events)
{
return _raid_set_events(seg, events, 0);
}
static struct segtype_handler _raid_ops = {
.name = _raid_name,
.text_import_area_count = _raid_text_import_area_count,
@@ -272,6 +306,9 @@ static struct segtype_handler _raid_ops = {
.target_present = _raid_target_present,
.modules_needed = _raid_modules_needed,
.destroy = _raid_destroy,
.target_monitored = _raid_target_monitored,
.target_monitor_events = _raid_target_monitor_events,
.target_unmonitor_events = _raid_target_unmonitor_events,
};
static struct segment_type *init_raid_segtype(struct cmd_context *cmd,
@@ -285,6 +322,12 @@ static struct segment_type *init_raid_segtype(struct cmd_context *cmd,
segtype->cmd = cmd;
segtype->flags = SEG_RAID;
#ifdef DEVMAPPER_SUPPORT
#ifdef DMEVENTD
if (_get_raid_dso_path(cmd))
segtype->flags |= SEG_MONITORED;
#endif
#endif
segtype->parity_devs = strstr(raid_type, "raid6") ? 2 : 1;
segtype->ops = &_raid_ops;