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158 lines
5.3 KiB

---
libmultipath/wwids.c | 44 ++++++++++++++++++++++++++++++++++++++++++
libmultipath/wwids.h | 1
multipath/main.c | 12 ++++++++---
multipath/multipath.8 | 5 +++-
multipathd/multipathd.service | 1
5 files changed, 59 insertions(+), 4 deletions(-)
Index: multipath-tools-130222/libmultipath/wwids.c
===================================================================
--- multipath-tools-130222.orig/libmultipath/wwids.c
+++ multipath-tools-130222/libmultipath/wwids.c
@@ -305,3 +305,47 @@ remember_wwid(char *wwid)
condlog(4, "wwid %s already in wwids file", wwid);
return 0;
}
+
+int remember_cmdline_wwid(void)
+{
+ FILE *f = NULL;
+ char buf[LINE_MAX], *next, *ptr;
+ int ret = 0;
+
+ f = fopen("/proc/cmdline", "re");
+ if (!f) {
+ condlog(0, "can't open /proc/cmdline : %s", strerror(errno));
+ return -1;
+ }
+
+ if (!fgets(buf, sizeof(buf), f)) {
+ if (ferror(f))
+ condlog(0, "read of /proc/cmdline failed : %s",
+ strerror(errno));
+ else
+ condlog(0, "couldn't read /proc/cmdline");
+ fclose(f);
+ return -1;
+ }
+ fclose(f);
+ next = buf;
+ while((ptr = strstr(next, "mpath.wwid="))) {
+ ptr += 11;
+ next = strpbrk(ptr, " \t\n");
+ if (next) {
+ *next = '\0';
+ next++;
+ }
+ if (strlen(ptr)) {
+ if (remember_wwid(ptr) != 0)
+ ret = -1;
+ }
+ else {
+ condlog(0, "empty mpath.wwid kernel command line option");
+ ret = -1;
+ }
+ if (!next)
+ break;
+ }
+ return ret;
+}
Index: multipath-tools-130222/libmultipath/wwids.h
===================================================================
--- multipath-tools-130222.orig/libmultipath/wwids.h
+++ multipath-tools-130222/libmultipath/wwids.h
@@ -17,5 +17,6 @@ int remember_wwid(char *wwid);
int check_wwids_file(char *wwid, int write_wwid);
int remove_wwid(char *wwid);
int replace_wwids(vector mp);
+int remember_cmdline_wwid(void);
#endif /* _WWIDS_H */
Index: multipath-tools-130222/multipath/main.c
===================================================================
--- multipath-tools-130222.orig/multipath/main.c
+++ multipath-tools-130222/multipath/main.c
@@ -85,7 +85,7 @@ usage (char * progname)
{
fprintf (stderr, VERSION_STRING);
fprintf (stderr, "Usage:\n");
- fprintf (stderr, " %s [-a|-c|-w|-W] [-d] [-T tm:val] [-r] [-v lvl] [-p pol] [-b fil] [-q] [dev]\n", progname);
+ fprintf (stderr, " %s [-a|-A|-c|-w|-W] [-d] [-T tm:val] [-r] [-v lvl] [-p pol] [-b fil] [-q] [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 -t\n", progname);
@@ -99,6 +99,8 @@ usage (char * progname)
" -f flush a multipath device map\n" \
" -F flush all multipath device maps\n" \
" -a add a device wwid to the wwids file\n" \
+ " -A add devices from kernel command line mpath.wwids\n"
+ " parameters to wwids file\n" \
" -c check if a device should be a path in a multipath device\n" \
" -T tm:val\n" \
" check if tm matches the multipathd timestamp. If so val is\n" \
@@ -438,7 +440,7 @@ main (int argc, char *argv[])
int r = 1;
long int timestamp = -1;
int valid = -1;
- while ((arg = getopt(argc, argv, ":adchl::FfM:v:p:b:BrtT:qwW")) != EOF ) {
+ while ((arg = getopt(argc, argv, ":aAdchl::FfM:v:p:b:BrtT:qwW")) != EOF ) {
switch(arg) {
case 'T':
if (optarg[0] == ':')
@@ -474,7 +476,7 @@ main (int argc, char *argv[])
if (dm_prereq())
exit(1);
- while ((arg = getopt(argc, argv, ":adchl::FfM:v:p:b:BrtT:qwW")) != EOF ) {
+ while ((arg = getopt(argc, argv, ":aAdchl::FfM:v:p:b:BrtT:qwW")) != EOF ) {
switch(arg) {
case 1: printf("optarg : %s\n",optarg);
break;
@@ -538,6 +540,10 @@ main (int argc, char *argv[])
goto out;
case 'T':
break;
+ case 'A':
+ if (remember_cmdline_wwid() != 0)
+ exit(1);
+ exit(0);
case 'h':
usage(argv[0]);
exit(0);
Index: multipath-tools-130222/multipathd/multipathd.service
===================================================================
--- multipath-tools-130222.orig/multipathd/multipathd.service
+++ multipath-tools-130222/multipathd/multipathd.service
@@ -11,6 +11,7 @@ Conflicts=shutdown.target
Type=forking
PIDFile=/var/run/multipathd/multipathd.pid
ExecStartPre=/sbin/modprobe dm-multipath
+ExecStartPre=-/sbin/multipath -A
ExecStart=/sbin/multipathd
ExecReload=/sbin/multipathd reconfigure
#ExecStop=/path/to/scrip delete-me if not necessary
Index: multipath-tools-130222/multipath/multipath.8
===================================================================
--- multipath-tools-130222.orig/multipath/multipath.8
+++ multipath-tools-130222/multipath/multipath.8
@@ -8,7 +8,7 @@ multipath \- Device mapper target autoco
.RB [\| \-b\ \c
.IR bindings_file \|]
.RB [\| \-d \|]
-.RB [\| \-h | \-l | \-ll | \-f | \-t | \-F | \-B | \-c | \-q | \|-r | \-a | \-w | \-W \|]
+.RB [\| \-h | \-l | \-ll | \-f | \-t | \-F | \-B | \-c | \-q | \|-r | \-a | \-A | \-w | \-W \|]
.RB [\| \-p\ \c
.BR failover | multibus | group_by_serial | group_by_prio | group_by_node_name \|]
.RB [\| device \|]
@@ -71,6 +71,9 @@ allow device tables with queue_if_no_pat
.B \-a
add the wwid for the specified device to the wwids file
.TP
+.B \-A
+add wwids from any kernel command line mpath.wwid parameters to the wwids file
+.TP
.B \-w
remove the wwid for the specified device from the wwids file
.TP