---
libmultipath/configure.c | 21 ++++++++++++++++++++-
libmultipath/configure.h | 1 +
multipath/main.c | 21 +++++++++++++++++++++
3 files changed, 42 insertions(+), 1 deletion(-)
Index: multipath-tools-130222/libmultipath/configure.c
===================================================================
--- multipath-tools-130222.orig/libmultipath/configure.c
+++ multipath-tools-130222/libmultipath/configure.c
@@ -743,7 +743,8 @@ deadmap (struct multipath * mpp)
return 1; /* dead */
}
-int check_daemon(void)
+extern int
+check_daemon(void)
{
int fd;
char *reply;
@@ -776,6 +777,7 @@ coalesce_paths (struct vectors * vecs, v
{
int r = 1;
int k, i;
+ int map_processed = 0;
char empty_buff[WWID_SIZE];
char params[PARAMS_SIZE];
struct multipath * mpp;
@@ -936,6 +938,13 @@ coalesce_paths (struct vectors * vecs, v
else
remove_map(mpp, vecs, 0);
}
+
+ /* By now at least one multipath device map is processed,
+ * so set map_processed = 1
+ */
+ if (!map_processed)
+ map_processed = 1;
+
}
/*
* Flush maps with only dead paths (ie not in sysfs)
@@ -963,6 +972,16 @@ coalesce_paths (struct vectors * vecs, v
condlog(2, "%s: remove (dead)", alias);
}
}
+
+ /* If there is at least one multipath device map processed then
+ * check if 'multipathd' service is running or not?
+ */
+ if (map_processed) {
+ if (!conf->daemon && !check_daemon())
+ condlog(0, "'multipathd' service is currently not "
+ "running, IO failover/failback will not work");
+ }
+
return 0;
}
Index: multipath-tools-130222/libmultipath/configure.h
===================================================================
--- multipath-tools-130222.orig/libmultipath/configure.h
+++ multipath-tools-130222/libmultipath/configure.h
@@ -27,6 +27,7 @@ enum actions {
int setup_map (struct multipath * mpp, char * params, int params_size );
int domap (struct multipath * mpp, char * params);
int reinstate_paths (struct multipath *mpp);
+int check_daemon(void);
int coalesce_paths (struct vectors *vecs, vector curmp, char * refwwid, int force_reload);
int get_refwwid (char * dev, enum devtypes dev_type, vector pathvec, char **wwid);
int reload_map(struct vectors *vecs, struct multipath *mpp, int refresh);
Index: multipath-tools-130222/multipath/main.c
===================================================================
--- multipath-tools-130222.orig/multipath/main.c
+++ multipath-tools-130222/multipath/main.c
@@ -178,6 +178,7 @@ static int
get_dm_mpvec (vector curmp, vector pathvec, char * refwwid)
{
int i;
+ int maps_present = 0;
struct multipath * mpp;
char params[PARAMS_SIZE], status[PARAMS_SIZE];
@@ -226,7 +227,27 @@ get_dm_mpvec (vector curmp, vector pathv
if (conf->cmd == CMD_CREATE)
reinstate_paths(mpp);
+
+ /* At this place we have found at least one multipath
+ * device map, so set maps_present = 1
+ */
+ if (!maps_present)
+ maps_present = 1;
+
}
+
+ /* If there is at least one multipath device map present then
+ * check if 'multipathd' service is running or not?
+ */
+ if (maps_present) {
+ if (!conf->daemon && !check_daemon()) {
+ condlog(0, "multipath device maps are present, but "
+ "'multipathd' service is not running");
+ condlog(0, "IO failover/failback will not work without "
+ "'multipathd' service running");
+ }
+ }
+
return 0;
}