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---
libmultipath/config.c | 1 +
libmultipath/config.h | 1 +
libmultipath/configure.c | 11 +++++++++++
libmultipath/defaults.h | 1 +
libmultipath/dict.c | 34 ++++++++++++++++++++++++++++++++++
libmultipath/wwids.c | 26 ++++++++++++++++++++++++++
libmultipath/wwids.h | 1 +
multipath/main.c | 2 +-
multipathd/main.c | 6 ++++++
9 files changed, 82 insertions(+), 1 deletion(-)
Index: multipath-tools-130222/libmultipath/config.c
===================================================================
--- multipath-tools-130222.orig/libmultipath/config.c
+++ multipath-tools-130222/libmultipath/config.c
@@ -547,6 +547,7 @@ load_config (char * file)
conf->reassign_maps = DEFAULT_REASSIGN_MAPS;
conf->checkint = DEFAULT_CHECKINT;
conf->max_checkint = MAX_CHECKINT(conf->checkint);
+ conf->find_multipaths = DEFAULT_FIND_MULTIPATHS;
conf->fast_io_fail = DEFAULT_FAST_IO_FAIL;
conf->retain_hwhandler = DEFAULT_RETAIN_HWHANDLER;
conf->detect_prio = DEFAULT_DETECT_PRIO;
Index: multipath-tools-130222/libmultipath/configure.c
===================================================================
--- multipath-tools-130222.orig/libmultipath/configure.c
+++ multipath-tools-130222/libmultipath/configure.c
@@ -508,6 +508,10 @@ coalesce_paths (struct vectors * vecs, v
memset(empty_buff, 0, WWID_SIZE);
+ /* ignore refwwid if it's empty */
+ if (refwwid && !strlen(refwwid))
+ refwwid = NULL;
+
if (force_reload) {
vector_foreach_slot (pathvec, pp1, k) {
pp1->mpp = NULL;
@@ -537,6 +541,13 @@ coalesce_paths (struct vectors * vecs, v
if (refwwid && strncmp(pp1->wwid, refwwid, WWID_SIZE))
continue;
+ /* If find_multipaths was selected check if the path is valid */
+ if (conf->find_multipaths && !refwwid &&
+ !should_multipath(pp1, pathvec)) {
+ orphan_path(pp1);
+ continue;
+ }
+
/*
* at this point, we know we really got a new mp
*/
Index: multipath-tools-130222/libmultipath/defaults.h
===================================================================
--- multipath-tools-130222.orig/libmultipath/defaults.h
+++ multipath-tools-130222/libmultipath/defaults.h
@@ -15,6 +15,7 @@
#define DEFAULT_USER_FRIENDLY_NAMES 0
#define DEFAULT_VERBOSITY 2
#define DEFAULT_REASSIGN_MAPS 1
+#define DEFAULT_FIND_MULTIPATHS 0
#define DEFAULT_FAST_IO_FAIL 5
#define DEFAULT_RETAIN_HWHANDLER RETAIN_HWHANDLER_OFF
#define DEFAULT_DETECT_PRIO DETECT_PRIO_OFF
Index: multipath-tools-130222/libmultipath/dict.c
===================================================================
--- multipath-tools-130222.orig/libmultipath/dict.c
+++ multipath-tools-130222/libmultipath/dict.c
@@ -585,6 +585,27 @@ def_reservation_key_handler(vector strve
}
static int
+def_find_multipaths_handler(vector strvec)
+{
+ char * buff;
+
+ buff = set_value(strvec);
+
+ if (!buff)
+ return 1;
+
+ if ((strlen(buff) == 2 && !strcmp(buff, "no")) ||
+ (strlen(buff) == 1 && !strcmp(buff, "0")))
+ conf->find_multipaths = 0;
+ else if ((strlen(buff) == 3 && !strcmp(buff, "yes")) ||
+ (strlen(buff) == 1 && !strcmp(buff, "1")))
+ conf->find_multipaths = 1;
+
+ FREE(buff);
+ return 0;
+}
+
+static int
def_names_handler(vector strvec)
{
char * buff;
@@ -2700,6 +2721,18 @@ snprint_def_log_checker_err (char * buff
}
static int
+snprint_def_find_multipaths (char * buff, int len, void * data)
+{
+ if (conf->find_multipaths == DEFAULT_FIND_MULTIPATHS)
+ return 0;
+ if (!conf->find_multipaths)
+ return snprintf(buff, len, "no");
+
+ return snprintf(buff, len, "yes");
+}
+
+
+static int
snprint_def_user_friendly_names (char * buff, int len, void * data)
{
if (conf->user_friendly_names == USER_FRIENDLY_NAMES_ON)
@@ -2833,6 +2866,7 @@ init_keywords(void)
install_keyword("wwids_file", &wwids_file_handler, &snprint_def_wwids_file);
install_keyword("log_checker_err", &def_log_checker_err_handler, &snprint_def_log_checker_err);
install_keyword("reservation_key", &def_reservation_key_handler, &snprint_def_reservation_key);
+ install_keyword("find_multipaths", &def_find_multipaths_handler, &snprint_def_find_multipaths);
install_keyword("retain_attached_hw_handler", &def_retain_hwhandler_handler, &snprint_def_retain_hwhandler_handler);
install_keyword("detect_prio", &def_detect_prio_handler, &snprint_def_detect_prio);
__deprecated install_keyword("default_selector", &def_selector_handler, NULL);
Index: multipath-tools-130222/libmultipath/wwids.c
===================================================================
--- multipath-tools-130222.orig/libmultipath/wwids.c
+++ multipath-tools-130222/libmultipath/wwids.c
@@ -125,6 +125,32 @@ out:
}
int
+should_multipath(struct path *pp1, vector pathvec)
+{
+ int i;
+ struct path *pp2;
+
+ condlog(4, "checking if %s should be multipathed", pp1->dev);
+ vector_foreach_slot(pathvec, pp2, i) {
+ if (pp1->dev == pp2->dev)
+ continue;
+ if (strncmp(pp1->wwid, pp2->wwid, WWID_SIZE) == 0) {
+ condlog(3, "found multiple paths with wwid %s, "
+ "multipathing %s", pp1->wwid, pp1->dev);
+ return 1;
+ }
+ }
+ if (check_wwids_file(pp1->wwid, 0) < 0) {
+ condlog(3, "wwid %s not in wwids file, skipping %s",
+ pp1->wwid, pp1->dev);
+ return 0;
+ }
+ condlog(3, "found wwid %s in wwids file, multipathing %s", pp1->wwid,
+ pp1->dev);
+ return 1;
+}
+
+int
remember_wwid(char *wwid)
{
int ret = check_wwids_file(wwid, 1);
Index: multipath-tools-130222/libmultipath/wwids.h
===================================================================
--- multipath-tools-130222.orig/libmultipath/wwids.h
+++ multipath-tools-130222/libmultipath/wwids.h
@@ -12,6 +12,7 @@
"#\n" \
"# Valid WWIDs:\n"
+int should_multipath(struct path *pp, vector pathvec);
int remember_wwid(char *wwid);
int check_wwids_file(char *wwid, int write_wwid);
Index: multipath-tools-130222/multipath/main.c
===================================================================
--- multipath-tools-130222.orig/multipath/main.c
+++ multipath-tools-130222/multipath/main.c
@@ -333,7 +333,7 @@ configure (void)
/*
* core logic entry point
*/
- r = coalesce_paths(&vecs, NULL, NULL, conf->force_reload);
+ r = coalesce_paths(&vecs, NULL, refwwid, conf->force_reload);
out:
if (refwwid)
Index: multipath-tools-130222/multipathd/main.c
===================================================================
--- multipath-tools-130222.orig/multipathd/main.c
+++ multipath-tools-130222/multipathd/main.c
@@ -49,6 +49,7 @@
#include <print.h>
#include <configure.h>
#include <prio.h>
+#include <wwids.h>
#include <pgpolicies.h>
#include <uevent.h>
@@ -471,6 +472,11 @@ rescan:
return 1;
}
+ if (conf->find_multipaths &&
+ !should_multipath(pp, vecs->pathvec)) {
+ orphan_path(pp);
+ return 0;
+ }
condlog(4,"%s: creating new map", pp->dev);
if ((mpp = add_map_with_path(vecs, pp, 1))) {
mpp->action = ACT_CREATE;
Index: multipath-tools-130222/libmultipath/config.h
===================================================================
--- multipath-tools-130222.orig/libmultipath/config.h
+++ multipath-tools-130222/libmultipath/config.h
@@ -106,6 +106,7 @@ struct config {
unsigned int dev_loss;
int log_checker_err;
int allow_queueing;
+ int find_multipaths;
uid_t uid;
gid_t gid;
mode_t mode;
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