/media and /mnt mounted as shared for console

init/init.go

@@ -218,6 +218,9 @@ func RunInit() error {
 			return c, dockerlaunch.PrepareFs(&mountConfig)
 		},
 		initializeSelinux,
+		func(c *config.CloudConfig) (*config.CloudConfig, error) {
+			return c, syscall.Mount("", "/", "", syscall.MS_SHARED|syscall.MS_REC, "")
+		},
 		sysInit,
 	}
 

os-config.tpl.yml

@@ -171,6 +171,8 @@ rancher:
       - all-volumes
       volumes:
       - /usr/bin/iptables:/sbin/iptables:ro
+      - /media:/media:shared
+      - /mnt:/mnt:shared
     container-data-volumes:
       image: {{.OS_REPO}}/os-state:{{.VERSION}}{{.SUFFIX}}
       labels:

tests/integration/rostest/test_15_shared_mount.py

@@ -0,0 +1,21 @@
+import pytest
+import rostest.util as u
+from rostest.util import SSH
+
+
+@pytest.fixture(scope="module")
+def qemu(request):
+    q = u.run_qemu(request)
+    u.flush_out(q.stdout)
+    return q
+
+
+def test_shared_mount(qemu):
+    SSH(qemu).check_call('''
+set -x -e
+
+sudo mkdir /mnt/shared
+sudo touch /test
+sudo system-docker run --privileged -v /mnt:/mnt:shared -v /test:/test {busybox_image} mount --bind / /mnt/shared
+ls /mnt/shared | grep test
+    '''.format(busybox_image=u.busybox_image))

tests/integration/rostest/util.py

@@ -15,6 +15,11 @@ if arch != 'amd64':
     suffix = '_' + arch
 
 
+busybox_image = {'amd64': 'busybox',
+                 'arm': 'armhf/busybox',
+                 'arm64': 'aarch64/busybox'}[arch]
+
+
 def iter_lines(s):
     return it.imap(str.rstrip, iter(s.readline, ''))