1 files changed, 95 insertions, 0 deletions
diff --git a/meta-oe/recipes-support/multipath-tools/files/0006-RH-add-wwids-from-kernel-cmdline-mpath.wwids-with-A.patch b/meta-oe/recipes-support/multipath-tools/files/0006-RH-add-wwids-from-kernel-cmdline-mpath.wwids-with-A.patch
new file mode 100644
index 00000000000..04160eaac59
--- /dev/null
+++ b/meta-oe/recipes-support/multipath-tools/files/0006-RH-add-wwids-from-kernel-cmdline-mpath.wwids-with-A.patch
@@ -0,0 +1,95 @@
+From bd65cdc704666dd4153779c74cdbb2cac6efea71 Mon Sep 17 00:00:00 2001
+From: Changqing Li <changqing.li@windriver.com>
+Date: Thu, 26 Sep 2019 16:29:48 +0800
+Subject: [PATCH] RH: add wwids from kernel cmdline mpath.wwids with -A
+
+This patch adds another option to multipath, "-A", which reads
+/proc/cmdline for mpath.wwid=<WWID> options, and adds any wwids it finds
+to /etc/multipath/wwids.  While this isn't usually important during
+normal operation, since these wwids should already be added, it can be
+helpful during installation, to make sure that multipath can claim
+devices as its own, before LVM or something else makes use of them.  The
+patch also execs "/sbin/multipath -A" before running multipathd in
+multipathd.service
+
+Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
+
+Upstream-Status: Pending
+
+[OP: Rebase to 0.9.3]
+Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
+
+Rebase to 0.9.8
+Signed-off-by: Changqing Li <changqing.li@windriver.com>
+---
+ libmultipath/wwids.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
+ libmultipath/wwids.h |  1 +
+ 2 files changed, 45 insertions(+)
+
+diff --git a/libmultipath/wwids.c b/libmultipath/wwids.c
+index aac18c04..68f8e373 100644
+--- a/libmultipath/wwids.c
++++ b/libmultipath/wwids.c
+@@ -439,3 +439,47 @@ int unmark_failed_wwid(const char *wwid)
+ 	print_failed_wwid_result("unmark_failed", wwid, r);
+ 	return r;
+ }
++
++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;
++}
+diff --git a/libmultipath/wwids.h b/libmultipath/wwids.h
+index ee47ad9f..1ed0d85e 100644
+--- a/libmultipath/wwids.h
++++ b/libmultipath/wwids.h
+@@ -17,6 +17,7 @@ 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);
+ 
+ enum {
+ 	WWID_IS_NOT_FAILED = 0,
+-- 
+2.25.1
+