Add an e2e test for gce pd.

Add an example for gce pd.
Add an extra log message.

cluster/gce/config-test.sh

@@ -31,7 +31,7 @@ MASTER_TAG="${INSTANCE_PREFIX}-master"
 MINION_TAG="${INSTANCE_PREFIX}-minion"
 MINION_NAMES=($(eval echo ${INSTANCE_PREFIX}-minion-{1..${NUM_MINIONS}}))
 MINION_IP_RANGES=($(eval echo "10.245.{1..${NUM_MINIONS}}.0/24"))
-MINION_SCOPES=""
+MINION_SCOPES="storage-ro,compute-rw"
 # Increase the sleep interval value if concerned about API rate limits. 3, in seconds, is the default.
 POLL_SLEEP_INTERVAL=3
 PORTAL_NET="10.0.0.0/16"

examples/gce-pd/testpd.yaml

@@ -0,0 +1,22 @@
+apiVersion: v1beta1
+desiredState:
+  manifest:
+    containers:
+      - image: kubernetes/pause
+        name: testpd
+        volumeMounts:
+          - mountPath: "/testpd"
+            name: "testpd"
+    id: testpd
+    version: v1beta1
+    volumes:
+      - name: testpd
+        source:
+          persistentDisk:
+            # This GCE PD must already exist and be formatted ext4
+            pdName: "%insert_pd_name_here%"
+            fsType: ext4
+id: testpd
+kind: Pod
+labels:
+  test: testpd

hack/e2e-suite/pd.sh

@@ -0,0 +1,83 @@
+#!/bin/bash
+
+# Copyright 2014 Google Inc. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Launches a container and verifies it can be reached. Assumes that
+# we're being called by hack/e2e-test.sh (we use some env vars it sets up).
+
+# TODO: Convert uses of gcutil to gcloud
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+KUBE_ROOT=$(dirname "${BASH_SOURCE}")/../..
+source "${KUBE_ROOT}/cluster/kube-env.sh"
+source "${KUBE_ROOT}/cluster/$KUBERNETES_PROVIDER/util.sh"
+
+if [[ "$KUBERNETES_PROVIDER" != "gce" ]]; then
+    echo "PD test is only run for GCE"
+    return 0
+fi
+
+disk_name="e2e-$(date +%H-%M-%s)"
+config="/tmp/${disk_name}.yaml"
+
+function teardown() {
+  echo "Cleaning up test artifacts"
+  ${KUBECFG} delete pods/testpd
+  rm -rf ${config}
+  echo "Waiting for disk to become unmounted"
+  sleep 20
+  gcutil deletedisk -f --zone=${ZONE} ${disk_name}
+}
+
+trap "teardown" EXIT
+
+perl -p -e "s/%.*%/${disk_name}/g" ${KUBE_ROOT}/examples/gce-pd/testpd.yaml > ${config}
+
+# Create and mount the disk.
+gcutil adddisk --size_gb=10 --zone=${ZONE} ${disk_name}
+gcutil attachdisk --disk ${disk_name} ${MASTER_NAME}
+gcutil ssh ${MASTER_NAME} sudo rm -rf /mnt/tmp 
+gcutil ssh ${MASTER_NAME} sudo mkdir /mnt/tmp
+gcutil ssh ${MASTER_NAME} sudo /usr/share/google/safe_format_and_mount /dev/disk/by-id/google-${disk_name} /mnt/tmp
+gcutil ssh ${MASTER_NAME} sudo umount /mnt/tmp
+gcloud compute instances detach-disk --disk ${disk_name} --zone ${ZONE} ${MASTER_NAME}
+
+${KUBECFG} -c ${config} create pods
+
+pod_id_list=$($KUBECFG '-template={{range.items}}{{.id}} {{end}}' -l test=testpd list pods)
+# Pod turn up on a clean cluster can take a while for the docker image pull.
+all_running=0
+for i in $(seq 1 24); do
+  echo "Waiting for pods to come up."
+  sleep 5
+  all_running=1
+  for id in $pod_id_list; do
+    current_status=$($KUBECFG -template '{{.currentState.status}}' get pods/$id) || true
+    if [[ "$current_status" != "Running" ]]; then
+      all_running=0
+      break
+    fi
+  done
+  if [[ "${all_running}" == 1 ]]; then
+    break
+  fi
+done
+if [[ "${all_running}" == 0 ]]; then
+  echo "Pods did not come up in time"
+  exit 1
+fi

pkg/volume/mounter_linux.go

@@ -23,6 +23,8 @@ import (
 	"regexp"
 	"strings"
 	"syscall"
+
+	"github.com/golang/glog"
 )
 
 const MOUNT_MS_BIND = syscall.MS_BIND
@@ -32,6 +34,7 @@ type DiskMounter struct{}
 
 // Wraps syscall.Mount()
 func (mounter *DiskMounter) Mount(source string, target string, fstype string, flags uintptr, data string) error {
+	glog.V(5).Infof("Mounting %s %s %s %d %s", source, target, fstype, flags, data)
 	return syscall.Mount(source, target, fstype, flags, data)
 }