[dm-devel] [PATCH v4 5/6] multipathd: allow resetting stats
Benjamin Marzinski
bmarzins at redhat.com
Mon Feb 27 18:26:42 UTC 2017
This patch adds two multipathd interactive commands:
multipathd reset maps stats
and
multipathd reset map <map> stats
to reset the statistics that are shown with the "show stats" commands.
Signed-off-by: Benjamin Marzinski <bmarzins at redhat.com>
---
multipathd/cli.c | 2 ++
multipathd/cli_handlers.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
multipathd/cli_handlers.h | 2 ++
multipathd/main.c | 2 ++
4 files changed, 50 insertions(+)
diff --git a/multipathd/cli.c b/multipathd/cli.c
index 50161be..32d4976 100644
--- a/multipathd/cli.c
+++ b/multipathd/cli.c
@@ -547,6 +547,8 @@ cli_init (void) {
add_handler(LIST+BLACKLIST, NULL);
add_handler(LIST+DEVICES, NULL);
add_handler(LIST+WILDCARDS, NULL);
+ add_handler(RESET+MAPS+STATS, NULL);
+ add_handler(RESET+MAP+STATS, NULL);
add_handler(ADD+PATH, NULL);
add_handler(DEL+PATH, NULL);
add_handler(ADD+MAP, NULL);
diff --git a/multipathd/cli_handlers.c b/multipathd/cli_handlers.c
index b0eeca6..b20b054 100644
--- a/multipathd/cli_handlers.c
+++ b/multipathd/cli_handlers.c
@@ -277,6 +277,17 @@ show_config (char ** r, int * len)
return 0;
}
+void
+reset_stats(struct multipath * mpp)
+{
+ mpp->stat_switchgroup = 0;
+ mpp->stat_path_failures = 0;
+ mpp->stat_map_loads = 0;
+ mpp->stat_total_queueing_time = 0;
+ mpp->stat_queueing_timeouts = 0;
+ mpp->stat_map_failures = 0;
+}
+
int
cli_list_config (void * v, char ** reply, int * len, void * data)
{
@@ -627,6 +638,39 @@ cli_list_daemon (void * v, char ** reply, int * len, void * data)
}
int
+cli_reset_maps_stats (void * v, char ** reply, int * len, void * data)
+{
+ struct vectors * vecs = (struct vectors *)data;
+ int i;
+ struct multipath * mpp;
+
+ condlog(3, "reset multipaths stats (operator)");
+
+ vector_foreach_slot(vecs->mpvec, mpp, i) {
+ reset_stats(mpp);
+ }
+ return 0;
+}
+
+int
+cli_reset_map_stats (void * v, char ** reply, int * len, void * data)
+{
+ struct vectors * vecs = (struct vectors *)data;
+ struct multipath * mpp;
+ char * param = get_keyparam(v, MAP);
+
+ param = convert_dev(param, 0);
+ mpp = find_mp_by_str(vecs->mpvec, param);
+
+ if (!mpp)
+ return 1;
+
+ condlog(3, "reset multipath %s stats (operator)", param);
+ reset_stats(mpp);
+ return 0;
+}
+
+int
cli_add_path (void * v, char ** reply, int * len, void * data)
{
struct vectors * vecs = (struct vectors *)data;
diff --git a/multipathd/cli_handlers.h b/multipathd/cli_handlers.h
index 19e003d..f4d02cc 100644
--- a/multipathd/cli_handlers.h
+++ b/multipathd/cli_handlers.h
@@ -19,6 +19,8 @@ int cli_list_config (void * v, char ** reply, int * len, void * data);
int cli_list_blacklist (void * v, char ** reply, int * len, void * data);
int cli_list_devices (void * v, char ** reply, int * len, void * data);
int cli_list_wildcards (void * v, char ** reply, int * len, void * data);
+int cli_reset_maps_stats (void * v, char ** reply, int * len, void * data);
+int cli_reset_map_stats (void * v, char ** reply, int * len, void * data);
int cli_add_path (void * v, char ** reply, int * len, void * data);
int cli_del_path (void * v, char ** reply, int * len, void * data);
int cli_add_map (void * v, char ** reply, int * len, void * data);
diff --git a/multipathd/main.c b/multipathd/main.c
index 1d73f9d..e317a4c 100644
--- a/multipathd/main.c
+++ b/multipathd/main.c
@@ -1238,6 +1238,8 @@ uxlsnrloop (void * ap)
set_handler_callback(LIST+BLACKLIST, cli_list_blacklist);
set_handler_callback(LIST+DEVICES, cli_list_devices);
set_handler_callback(LIST+WILDCARDS, cli_list_wildcards);
+ set_handler_callback(RESET+MAPS+STATS, cli_reset_maps_stats);
+ set_handler_callback(RESET+MAP+STATS, cli_reset_map_stats);
set_handler_callback(ADD+PATH, cli_add_path);
set_handler_callback(DEL+PATH, cli_del_path);
set_handler_callback(ADD+MAP, cli_add_map);
--
1.8.3.1
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