diff --git a/mount.ocfs2-add-nocluster-mount-option-support.patch b/mount.ocfs2-add-nocluster-mount-option-support.patch
new file mode 100644
index 0000000..e3a4d1d
--- /dev/null
+++ b/mount.ocfs2-add-nocluster-mount-option-support.patch
@@ -0,0 +1,106 @@
+From 9b661d197aa634229919364d6cc07e58ed4cc01f Mon Sep 17 00:00:00 2001
+From: Gang He <ghe@suse.com>
+Date: Mon, 27 Jul 2020 19:32:26 +0800
+Subject: [PATCH] mount.ocfs2: add nocluster mount option support
+
+Now, ocfs2 kernel modules have accepted nocluster mount option, to
+support mounting a shared volume without the cluster stack.
+For mount.ocfs2 tool, we need to add the corresponding support, e.g.
+add the prompt message, option description in man page.
+---
+ mount.ocfs2/mount.ocfs2.8.in |  6 ++++++
+ mount.ocfs2/mount.ocfs2.c    | 17 +++++++++++++++--
+ mount.ocfs2/opts.c           |  5 +++++
+ mount.ocfs2/sundries.h       |  1 +
+ 4 files changed, 27 insertions(+), 2 deletions(-)
+
+diff --git a/mount.ocfs2/mount.ocfs2.8.in b/mount.ocfs2/mount.ocfs2.8.in
+index 053244d6..a36bdc8c 100644
+--- a/mount.ocfs2/mount.ocfs2.8.in
++++ b/mount.ocfs2/mount.ocfs2.8.in
+@@ -126,6 +126,12 @@ will have no effect. This mount option works with Linux kernel \fB2.6.35\fR and
+ Indicates that the file system can create inodes at any location in the volume, including
+ those which will result in inode numbers greater than 4 billion.
+ 
++.TP
++\fBnocluster\fR
++This option allows users to mount a clustered volume without configuring the cluster stack.
++However, you must be aware that you can only mount the file system from one node at the
++same time, otherwise, the file system may be damaged. Please use it with caution.
++
+ .TP
+ \fB[no]intr\fR
+ Specifies whether a signal can interrupt IOs. It is disabled by default.
+diff --git a/mount.ocfs2/mount.ocfs2.c b/mount.ocfs2/mount.ocfs2.c
+index 5481ae9a..27049996 100644
+--- a/mount.ocfs2/mount.ocfs2.c
++++ b/mount.ocfs2/mount.ocfs2.c
+@@ -28,6 +28,7 @@
+ 
+ int verbose = 0;
+ int mount_quiet = 0;
++int nocluster_opt = 0;
+ char *progname = NULL;
+ 
+ static int nomtab = 0;
+@@ -112,7 +113,7 @@ static errcode_t add_mount_options(ocfs2_filesys *fs,
+ 	char stackstr[strlen(OCFS2_CLUSTER_STACK_ARG) + OCFS2_STACK_LABEL_LEN + 1];
+ 	struct ocfs2_super_block *sb = OCFS2_RAW_SB(fs->fs_super);
+ 
+-	if (ocfs2_mount_local(fs) || ocfs2_is_hard_readonly(fs)) {
++	if (ocfs2_mount_local(fs) || nocluster_opt || ocfs2_is_hard_readonly(fs)) {
+ 		add = OCFS2_HB_NONE;
+ 		goto addit;
+ 	}
+@@ -345,7 +346,19 @@ int main(int argc, char **argv)
+ 		goto bail;
+ 	}
+ 
+-	clustered = (0 == ocfs2_mount_local(fs));
++	clustered = ((0 == ocfs2_mount_local(fs)) && (0 == nocluster_opt));
++
++	if ((0 == ocfs2_mount_local(fs)) && nocluster_opt) {
++		fprintf(stdout, "Warning: to mount a clustered volume without the cluster stack.\n"
++				"Please make sure you only mount the file system from one node.\n"
++				"Otherwise, the file system may be damaged.\n"
++				"Proceed (y/N): ");
++		if (toupper(getchar()) != 'Y') {
++			printf("Aborting operation.\n");
++			ret = 1;
++			goto bail;
++		}
++	}
+ 
+ 	if (ocfs2_is_hard_readonly(fs) && (clustered ||
+ 					   !(mo.flags & MS_RDONLY))) {
+diff --git a/mount.ocfs2/opts.c b/mount.ocfs2/opts.c
+index ae8129a4..cd03390c 100644
+--- a/mount.ocfs2/opts.c
++++ b/mount.ocfs2/opts.c
+@@ -120,6 +120,11 @@ static int parse_string_opt(char *s)
+ 	struct string_opt_map *m;
+ 	int lth;
+ 
++	if (!strncmp(s, "nocluster", 9)) {
++		nocluster_opt = 1;
++		return 0;
++	}
++
+ 	for (m = &string_opt_map[0]; m->tag; m++) {
+ 		lth = strlen(m->tag);
+ 		if (!strncmp(s, m->tag, lth)) {
+diff --git a/mount.ocfs2/sundries.h b/mount.ocfs2/sundries.h
+index af0df4e2..52b1267d 100644
+--- a/mount.ocfs2/sundries.h
++++ b/mount.ocfs2/sundries.h
+@@ -13,6 +13,7 @@
+ #include <rpc/types.h>
+ #endif
+ 
++extern int nocluster_opt;
+ extern int mount_quiet;
+ extern int verbose;
+ extern int sloppy;
+-- 
+2.21.0
+
diff --git a/ocfs2-tools.changes b/ocfs2-tools.changes
index 2166370..d0d0516 100644
--- a/ocfs2-tools.changes
+++ b/ocfs2-tools.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Aug 10 10:50:30 UTC 2020 - ghe@suse.com
+
+- Add nocluster mount option support (bsc#1174943)
+  + mount.ocfs2-add-nocluster-mount-option-support.patch
+
 -------------------------------------------------------------------
 Wed May  6 11:30:20 UTC 2020 - ghe@suse.com
 
diff --git a/ocfs2-tools.spec b/ocfs2-tools.spec
index 65f1261..299d213 100644
--- a/ocfs2-tools.spec
+++ b/ocfs2-tools.spec
@@ -61,6 +61,7 @@ Patch502:       fsck.ocfs2-fix-compile-error-when-glibc-upgrade.patch
 Patch503:       mounted.ocfs2-use-sys-sysmacros.h-include-for-makede.patch
 Patch504:       fix-build-failure-with-glibc-2.28.patch
 Patch505:       debugfs.ocfs2-Fix-the-error-on-devices-with-sector-s.patch
+Patch506:       mount.ocfs2-add-nocluster-mount-option-support.patch
 
 BuildRequires:  autoconf
 BuildRequires:  e2fsprogs-devel
@@ -174,6 +175,7 @@ OCFS2 filesystem.
 %patch503 -p1
 %patch504 -p1
 %patch505 -p1
+%patch506 -p1
 
 %build
 %global _lto_cflags %{_lto_cflags} -ffat-lto-objects