diff --git a/test/mng_mod/issues/898_928/arm64/CT_001.c b/test/mng_mod/issues/898_928/arm64/CT_001.c
index b3721737..69355667 100644
--- a/test/mng_mod/issues/898_928/arm64/CT_001.c
+++ b/test/mng_mod/issues/898_928/arm64/CT_001.c
@@ -36,12 +36,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -106,14 +100,6 @@ goto shutdown;
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -140,12 +126,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/%s", prefix, PART_MOD_NAME);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/arm64/CT_002.c b/test/mng_mod/issues/898_928/arm64/CT_002.c
index 3de0d9d2..cb9f61f5 100644
--- a/test/mng_mod/issues/898_928/arm64/CT_002.c
+++ b/test/mng_mod/issues/898_928/arm64/CT_002.c
@@ -36,12 +36,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -106,14 +100,6 @@ goto destroy;
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -140,12 +126,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/%s", prefix, PART_MOD_NAME);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/arm64/CT_003.c b/test/mng_mod/issues/898_928/arm64/CT_003.c
index 01a29c20..0c3da33d 100644
--- a/test/mng_mod/issues/898_928/arm64/CT_003.c
+++ b/test/mng_mod/issues/898_928/arm64/CT_003.c
@@ -36,12 +36,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -105,14 +99,6 @@ int main(int argc, char** argv) {
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -139,12 +125,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/%s", prefix, PART_MOD_NAME);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/arm64/CT_004.c b/test/mng_mod/issues/898_928/arm64/CT_004.c
index 693095b9..bd079540 100644
--- a/test/mng_mod/issues/898_928/arm64/CT_004.c
+++ b/test/mng_mod/issues/898_928/arm64/CT_004.c
@@ -36,12 +36,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -105,14 +99,6 @@ int main(int argc, char** argv) {
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -140,12 +126,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/%s", prefix, PART_MOD_NAME);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/arm64/CT_005.c b/test/mng_mod/issues/898_928/arm64/CT_005.c
index 0297a24b..7aec882c 100644
--- a/test/mng_mod/issues/898_928/arm64/CT_005.c
+++ b/test/mng_mod/issues/898_928/arm64/CT_005.c
@@ -36,12 +36,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -105,14 +99,6 @@ int main(int argc, char** argv) {
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	pid = fork();
 	if (pid == 0) {
@@ -147,12 +133,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/%s", prefix, PART_MOD_NAME);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/arm64/CT_006.c b/test/mng_mod/issues/898_928/arm64/CT_006.c
index 83cca988..bbaa27f8 100644
--- a/test/mng_mod/issues/898_928/arm64/CT_006.c
+++ b/test/mng_mod/issues/898_928/arm64/CT_006.c
@@ -36,12 +36,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -105,14 +99,6 @@ int main(int argc, char** argv) {
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	fflush(stdout);
 	pid = fork();
@@ -151,12 +137,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/%s", prefix, PART_MOD_NAME);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/arm64/CT_007.c b/test/mng_mod/issues/898_928/arm64/CT_007.c
index 0fe5b70d..a3e5e032 100644
--- a/test/mng_mod/issues/898_928/arm64/CT_007.c
+++ b/test/mng_mod/issues/898_928/arm64/CT_007.c
@@ -36,12 +36,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -106,14 +100,6 @@ goto shutdown;
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -140,12 +126,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/%s", prefix, PART_MOD_NAME);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/arm64/CT_008.c b/test/mng_mod/issues/898_928/arm64/CT_008.c
index 2610ac17..a57024c2 100644
--- a/test/mng_mod/issues/898_928/arm64/CT_008.c
+++ b/test/mng_mod/issues/898_928/arm64/CT_008.c
@@ -36,12 +36,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -105,14 +99,6 @@ int main(int argc, char** argv) {
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -143,12 +129,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/%s", prefix, PART_MOD_NAME);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/arm64/CT_009.c b/test/mng_mod/issues/898_928/arm64/CT_009.c
index 4292657f..b7bbe1f3 100644
--- a/test/mng_mod/issues/898_928/arm64/CT_009.c
+++ b/test/mng_mod/issues/898_928/arm64/CT_009.c
@@ -36,12 +36,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -106,14 +100,6 @@ goto shutdown;
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -140,12 +126,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/%s", prefix, PART_MOD_NAME);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/arm64/ihklib001_lin.c b/test/mng_mod/issues/898_928/arm64/ihklib001_lin.c
index a2d9f5be..c60cc38c 100644
--- a/test/mng_mod/issues/898_928/arm64/ihklib001_lin.c
+++ b/test/mng_mod/issues/898_928/arm64/ihklib001_lin.c
@@ -85,17 +85,6 @@ int main(int argc, char **argv)
 		printf("Execute as a root\n");
 	}
 
-#if 0
-	// ihk_os_destroy_pseudofs
-	ret = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	OKNG(ret == 0 &&
-	     strstr(buf, "/tmp/mcos/mcos0_sys") == NULL,
-	     "ihk_os_destroy_pseudofs (1)\n");
-#endif
-
 	/* Test error handling */
 
 	// reserve cpu
@@ -411,10 +400,6 @@ int main(int argc, char **argv)
 	OKNG(strstr(buf, "rror") != NULL,
 	     "ihkconfig 0 get status (1) returned:\n%s\n", buf);
 
-	// create pseudofs
-	ret = ihk_os_create_pseudofs(0, 0, 0);
-	OKNG(ret != 0, "ihk_os_create_pseudofs\n");
-
 	// kmsg size
 	kmsg_size = ihk_os_get_kmsg_size(0);
 	OKNG(kmsg_size < 0, "ihk_os_get_kmsg_size\n");
@@ -455,11 +440,6 @@ int main(int argc, char **argv)
 	ret = ihk_destroy_os(0, 0);
 	OKNG(ret != 0, "ihk_destroy_os (2)\n");
 
-	// destroy pseudofs. Note that it doesn't check the existence
-	// of the OS.
-	ret = ihk_os_destroy_pseudofs(0, 0, 0);
-	OKNG(ret == 0, "ihk_os_destroy_pseudofs (2)\n");
-
 	/* Expected to succeed */
 
 	// create 0
@@ -731,17 +711,6 @@ int main(int argc, char **argv)
 	OKNG(strstr(buf, "RUNNING") != NULL,
 	     "ihkconfig 0 get status (4) returned:\n%s\n", buf);
 
-#if 0
-	// create pseudofs
-	ret = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	OKNG(ret == 0 &&
-	     strstr(buf, "/tmp/mcos/mcos0_sys") != NULL,
-	     "ihk_os_create_pseudofs()\n");
-#endif
-
 	// get kmsg size
 	kmsg_size = ihk_os_get_kmsg_size(0);
 	OKNG(kmsg_size > 0, "ihk_os_get_kmsg_size\n");
@@ -866,15 +835,6 @@ int main(int argc, char **argv)
 	status = system(cmd);
 	CHKANDJUMP(WEXITSTATUS(status) != 0, -1, "system");
 
-	// destroy pseudofs
-	ret = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	OKNG(ret == 0 &&
-	     strstr(buf, "/tmp/mcos/mcos0_sys") == NULL,
-	     "ihk_os_destroy_pseudofs (3)\n");
-
 	sprintf(cmd, "rmmod %s/kmod/ihk-smp-%s.ko",
 		MCK_DIR, ARCH);
 	status = system(cmd);
diff --git a/test/mng_mod/issues/898_928/x86_64/CT_001.c b/test/mng_mod/issues/898_928/x86_64/CT_001.c
index b4356d86..c3600bfd 100644
--- a/test/mng_mod/issues/898_928/x86_64/CT_001.c
+++ b/test/mng_mod/issues/898_928/x86_64/CT_001.c
@@ -52,12 +52,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -122,14 +116,6 @@ goto shutdown;
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -156,12 +142,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/ihk-smp-x86_64.ko", prefix);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/x86_64/CT_002.c b/test/mng_mod/issues/898_928/x86_64/CT_002.c
index 06d630b9..6ebfd0ce 100644
--- a/test/mng_mod/issues/898_928/x86_64/CT_002.c
+++ b/test/mng_mod/issues/898_928/x86_64/CT_002.c
@@ -52,12 +52,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -122,14 +116,6 @@ goto destroy;
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -156,12 +142,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/ihk-smp-x86_64.ko", prefix);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/x86_64/CT_003.c b/test/mng_mod/issues/898_928/x86_64/CT_003.c
index 7ec62cfb..e8c7e2e3 100644
--- a/test/mng_mod/issues/898_928/x86_64/CT_003.c
+++ b/test/mng_mod/issues/898_928/x86_64/CT_003.c
@@ -52,12 +52,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -121,14 +115,6 @@ int main(int argc, char** argv) {
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -155,12 +141,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/ihk-smp-x86_64.ko", prefix);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/x86_64/CT_004.c b/test/mng_mod/issues/898_928/x86_64/CT_004.c
index 171ae596..7df136e5 100644
--- a/test/mng_mod/issues/898_928/x86_64/CT_004.c
+++ b/test/mng_mod/issues/898_928/x86_64/CT_004.c
@@ -52,12 +52,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -121,14 +115,6 @@ int main(int argc, char** argv) {
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -156,12 +142,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/ihk-smp-x86_64.ko", prefix);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/x86_64/CT_005.c b/test/mng_mod/issues/898_928/x86_64/CT_005.c
index 39617d1b..44fc9681 100644
--- a/test/mng_mod/issues/898_928/x86_64/CT_005.c
+++ b/test/mng_mod/issues/898_928/x86_64/CT_005.c
@@ -52,12 +52,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -117,14 +111,6 @@ int main(int argc, char** argv) {
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	pid = fork();
 	if (pid == 0) {
@@ -157,12 +143,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/ihk-smp-x86_64.ko", prefix);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/x86_64/CT_006.c b/test/mng_mod/issues/898_928/x86_64/CT_006.c
index c5b4cb53..e759bcbd 100644
--- a/test/mng_mod/issues/898_928/x86_64/CT_006.c
+++ b/test/mng_mod/issues/898_928/x86_64/CT_006.c
@@ -52,12 +52,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -121,14 +115,6 @@ int main(int argc, char** argv) {
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	fflush(stdout);
 	pid = fork();
@@ -165,12 +151,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/ihk-smp-x86_64.ko", prefix);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/x86_64/CT_007.c b/test/mng_mod/issues/898_928/x86_64/CT_007.c
index 287f9bd1..e56594eb 100644
--- a/test/mng_mod/issues/898_928/x86_64/CT_007.c
+++ b/test/mng_mod/issues/898_928/x86_64/CT_007.c
@@ -52,12 +52,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -122,14 +116,6 @@ goto shutdown;
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -156,12 +142,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/ihk-smp-x86_64.ko", prefix);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/x86_64/CT_008.c b/test/mng_mod/issues/898_928/x86_64/CT_008.c
index 8578cdb5..354c69a3 100644
--- a/test/mng_mod/issues/898_928/x86_64/CT_008.c
+++ b/test/mng_mod/issues/898_928/x86_64/CT_008.c
@@ -52,12 +52,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -121,14 +115,6 @@ int main(int argc, char** argv) {
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -159,12 +145,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/ihk-smp-x86_64.ko", prefix);
 	status = system(cmd);
 
diff --git a/test/mng_mod/issues/898_928/x86_64/CT_009.c b/test/mng_mod/issues/898_928/x86_64/CT_009.c
index e595e5bd..4b979d70 100644
--- a/test/mng_mod/issues/898_928/x86_64/CT_009.c
+++ b/test/mng_mod/issues/898_928/x86_64/CT_009.c
@@ -52,12 +52,6 @@ int main(int argc, char** argv) {
 	sprintf(cmd, "%s/sbin/mcstop+release.sh", prefix);
 	status = system(cmd);
 
-	// ihk_os_destroy_pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "insmod %s/kmod/ihk.ko", prefix);
 	status = system(cmd);
 
@@ -122,14 +116,6 @@ goto shutdown;
        sysfsm_setup */
 	usleep(100*1000);
 
-	// create pseudofs
-	ret_ihklib = ihk_os_create_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-	//OKNG(ret_ihklib == 0 &&
-	//	 strstr(buf, "/tmp/mcos/mcos0_sys") != NULL, "ihk_os_create_pseudofs()\n");
-
 	// mcexec
 	sprintf(cmd, "%s/bin/mcexec ls -l | grep Makefile", prefix);
     fp = popen(cmd, "r");
@@ -156,12 +142,6 @@ destroy:
 	sprintf(cmd, "rmmod %s/kmod/mcctrl.ko", prefix);
 	status = system(cmd);
 
-	// destroy pseudofs
-	ret_ihklib = ihk_os_destroy_pseudofs(0, 0, 0);
-	fp = popen("cat /proc/mounts | grep /tmp/mcos/mcos0_sys", "r");
-	nread = fread(buf, 1, sizeof(buf), fp);
-	buf[nread] = 0;
-
 	sprintf(cmd, "rmmod %s/kmod/ihk-smp-x86_64.ko", prefix);
 	status = system(cmd);