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|
---
libmultipath/finder.c | 2 +-
libmultipath/finder.h | 1 +
multipath/main.c | 35 ++++++++++++++++++++++++++++-------
multipath/multipath.rules | 8 ++++++++
4 files changed, 38 insertions(+), 8 deletions(-)
Index: multipath-tools/libmultipath/finder.c
===================================================================
--- multipath-tools.orig/libmultipath/finder.c
+++ multipath-tools/libmultipath/finder.c
@@ -78,7 +78,7 @@ write_out_wwid(int fd, char *wwid) {
return 1;
}
-static int
+int
check_wwids_file(char *wwid, int write_wwid)
{
int scan_fd, fd, can_write, found, ret;
Index: multipath-tools/libmultipath/finder.h
===================================================================
--- multipath-tools.orig/libmultipath/finder.h
+++ multipath-tools/libmultipath/finder.h
@@ -14,5 +14,6 @@
int should_multipath(struct path *pp, vector pathvec);
int remember_wwid(char *wwid);
+int check_wwids_file(char *wwid, int write_wwid);
#endif /* _FINDER_H */
Index: multipath-tools/multipath/main.c
===================================================================
--- multipath-tools.orig/multipath/main.c
+++ multipath-tools/multipath/main.c
@@ -51,6 +51,7 @@
#include <errno.h>
#include <sys/time.h>
#include <sys/resource.h>
+#include <finder.h>
int logsink;
@@ -79,7 +80,7 @@ usage (char * progname)
{
fprintf (stderr, VERSION_STRING);
fprintf (stderr, "Usage:\n");
- fprintf (stderr, " %s [-d] [-r] [-v lvl] [-p pol] [-b fil] [dev]\n", progname);
+ fprintf (stderr, " %s [-c] [-d] [-r] [-v lvl] [-p pol] [-b fil] [dev]\n", progname);
fprintf (stderr, " %s -l|-ll|-f [-v lvl] [-b fil] [dev]\n", progname);
fprintf (stderr, " %s -F [-v lvl]\n", progname);
fprintf (stderr, " %s -h\n", progname);
@@ -91,6 +92,7 @@ usage (char * progname)
" -ll show multipath topology (maximum info)\n" \
" -f flush a multipath device map\n" \
" -F flush all multipath device maps\n" \
+ " -c check if a device should be a path in a multipath device\n" \
" -d dry run, do not create or update devmaps\n" \
" -r force devmap reload\n" \
" -p policy failover|multibus|group_by_serial|group_by_prio\n" \
@@ -249,10 +251,11 @@ configure (void)
/*
* if we have a blacklisted device parameter, exit early
*/
- if (dev &&
- (filter_devnode(conf->blist_devnode, conf->elist_devnode, dev) > 0))
- goto out;
-
+ if (dev && (filter_devnode(conf->blist_devnode, conf->elist_devnode, dev) > 0)) {
+ if (conf->dry_run == 2)
+ printf("%s is not a valid multipath device path\n", conf->dev);
+ goto out;
+ }
/*
* scope limiting must be translated into a wwid
* failing the translation is fatal (by policy)
@@ -268,6 +271,15 @@ configure (void)
if (filter_wwid(conf->blist_wwid, conf->elist_wwid,
refwwid) > 0)
goto out;
+ if (conf->dry_run == 2) {
+ if (check_wwids_file(refwwid, 0) == 0){
+ printf("%s is a valid multipath device path\n", conf->dev);
+ r = 0;
+ }
+ else
+ printf("%s is not a valid multipath device path\n", conf->dev);
+ goto out;
+ }
}
/*
@@ -350,7 +362,7 @@ main (int argc, char *argv[])
condlog(0, "multipath tools need sysfs mounted");
exit(1);
}
- while ((arg = getopt(argc, argv, ":dhl::FfM:v:p:b:r")) != EOF ) {
+ while ((arg = getopt(argc, argv, ":dchl::FfM:v:p:b:r")) != EOF ) {
switch(arg) {
case 1: printf("optarg : %s\n",optarg);
break;
@@ -364,8 +376,12 @@ main (int argc, char *argv[])
case 'b':
conf->bindings_file = optarg;
break;
+ case 'c':
+ conf->dry_run = 2;
+ break;
case 'd':
- conf->dry_run = 1;
+ if (!conf->dry_run)
+ conf->dry_run = 1;
break;
case 'f':
conf->remove = FLUSH_ONE;
@@ -438,6 +454,11 @@ main (int argc, char *argv[])
dm_init();
+ if (conf->dry_run == 2 &&
+ (!conf->dev || conf->dev_type == DEV_DEVMAP)) {
+ condlog(0, "the -c option requires a path to check");
+ goto out;
+ }
if (conf->remove == FLUSH_ONE) {
if (conf->dev_type == DEV_DEVMAP)
r = dm_flush_map(conf->dev);
Index: multipath-tools/multipath/multipath.rules
===================================================================
--- multipath-tools.orig/multipath/multipath.rules
+++ multipath-tools/multipath/multipath.rules
@@ -1,6 +1,14 @@
# multipath wants the devmaps presented as meaninglful device names
# so name them after their devmap name
SUBSYSTEM!="block", GOTO="end_mpath"
+TEST!="/sbin/multipath", GOTO="check_usr"
+ENV{MPATH_GOT_HERE}="$env{DEVNAME}"
+PROGRAM=="/sbin/multipath -c /dev/$env{DEVNAME}", ENV{DM_MULTIPATH_DEVICE_PATH}="1"
+GOTO="skip_usr"
+LABEL="check_usr"
+ENV{MPATH_GOT_HERE} = "2"
+PROGRAM=="/usr/sbin/multipath -c /dev/$env{DEVNAME}", ENV{DM_MULTIPATH_DEVICE_PATH}="1"
+LABEL="skip_usr"
RUN+="socket:/org/kernel/dm/multipath_event"
KERNEL!="dm-*", GOTO="end_mpath"
ACTION!="change", GOTO="end_mpath"
|
