Extract pkg/util/mount and drop BUILD
Preserving git history.
This commit is contained in:
Travis Rhoden
committed by
Srini Brahmaroutu
Srini Brahmaroutu
parent
0d2205f515
commit
0abe151fe8
439
mount_linux_test.go
Normal file
439
mount_linux_test.go
Normal file
@@ -0,0 +1,439 @@
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// +build linux
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/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package mount
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import (
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"io/ioutil"
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"os"
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"reflect"
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"testing"
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)
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func TestReadProcMountsFrom(t *testing.T) {
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successCase :=
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`/dev/0 /path/to/0 type0 flags 0 0
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/dev/1 /path/to/1 type1 flags 1 1
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/dev/2 /path/to/2 type2 flags,1,2=3 2 2
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`
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// NOTE: readProcMountsFrom has been updated to using fnv.New32a()
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mounts, err := parseProcMounts([]byte(successCase))
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if err != nil {
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t.Errorf("expected success, got %v", err)
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}
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if len(mounts) != 3 {
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t.Fatalf("expected 3 mounts, got %d", len(mounts))
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}
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mp := MountPoint{"/dev/0", "/path/to/0", "type0", []string{"flags"}, 0, 0}
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if !mountPointsEqual(&mounts[0], &mp) {
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t.Errorf("got unexpected MountPoint[0]: %#v", mounts[0])
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}
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mp = MountPoint{"/dev/1", "/path/to/1", "type1", []string{"flags"}, 1, 1}
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if !mountPointsEqual(&mounts[1], &mp) {
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t.Errorf("got unexpected MountPoint[1]: %#v", mounts[1])
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}
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mp = MountPoint{"/dev/2", "/path/to/2", "type2", []string{"flags", "1", "2=3"}, 2, 2}
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if !mountPointsEqual(&mounts[2], &mp) {
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t.Errorf("got unexpected MountPoint[2]: %#v", mounts[2])
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}
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errorCases := []string{
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"/dev/0 /path/to/mount\n",
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"/dev/1 /path/to/mount type flags a 0\n",
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"/dev/2 /path/to/mount type flags 0 b\n",
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}
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for _, ec := range errorCases {
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_, err := parseProcMounts([]byte(ec))
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if err == nil {
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t.Errorf("expected error")
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}
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}
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}
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func mountPointsEqual(a, b *MountPoint) bool {
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if a.Device != b.Device || a.Path != b.Path || a.Type != b.Type || !reflect.DeepEqual(a.Opts, b.Opts) || a.Pass != b.Pass || a.Freq != b.Freq {
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return false
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}
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return true
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}
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func TestGetMountRefs(t *testing.T) {
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fm := NewFakeMounter(
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[]MountPoint{
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{Device: "/dev/sdb", Path: "/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd"},
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{Device: "/dev/sdb", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd-in-pod"},
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{Device: "/dev/sdc", Path: "/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd2"},
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{Device: "/dev/sdc", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod1"},
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{Device: "/dev/sdc", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod2"},
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})
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tests := []struct {
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mountPath string
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expectedRefs []string
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}{
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{
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"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd-in-pod",
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[]string{
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"/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd",
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},
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},
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{
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"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod1",
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[]string{
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"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod2",
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"/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd2",
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},
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},
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{
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"/var/fake/directory/that/doesnt/exist",
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[]string{},
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},
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}
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for i, test := range tests {
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if refs, err := fm.GetMountRefs(test.mountPath); err != nil || !setEquivalent(test.expectedRefs, refs) {
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t.Errorf("%d. getMountRefs(%q) = %v, %v; expected %v, nil", i, test.mountPath, refs, err, test.expectedRefs)
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}
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}
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}
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func setEquivalent(set1, set2 []string) bool {
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map1 := make(map[string]bool)
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map2 := make(map[string]bool)
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for _, s := range set1 {
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map1[s] = true
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}
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for _, s := range set2 {
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map2[s] = true
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}
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for s := range map1 {
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if !map2[s] {
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return false
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}
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}
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for s := range map2 {
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if !map1[s] {
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return false
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}
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}
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return true
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}
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func TestGetDeviceNameFromMount(t *testing.T) {
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fm := NewFakeMounter(
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[]MountPoint{
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{Device: "/dev/disk/by-path/prefix-lun-1",
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Path: "/mnt/111"},
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{Device: "/dev/disk/by-path/prefix-lun-1",
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Path: "/mnt/222"},
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})
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tests := []struct {
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mountPath string
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expectedDevice string
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expectedRefs int
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}{
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{
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"/mnt/222",
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"/dev/disk/by-path/prefix-lun-1",
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2,
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},
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}
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for i, test := range tests {
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if device, refs, err := GetDeviceNameFromMount(fm, test.mountPath); err != nil || test.expectedRefs != refs || test.expectedDevice != device {
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t.Errorf("%d. GetDeviceNameFromMount(%s) = (%s, %d), %v; expected (%s,%d), nil", i, test.mountPath, device, refs, err, test.expectedDevice, test.expectedRefs)
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}
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}
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}
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func TestGetMountRefsByDev(t *testing.T) {
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fm := NewFakeMounter(
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[]MountPoint{
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{Device: "/dev/sdb", Path: "/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd"},
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{Device: "/dev/sdb", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd-in-pod"},
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{Device: "/dev/sdc", Path: "/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd2"},
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{Device: "/dev/sdc", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod1"},
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{Device: "/dev/sdc", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod2"},
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})
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tests := []struct {
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mountPath string
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expectedRefs []string
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}{
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{
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"/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd",
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[]string{
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"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd-in-pod",
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},
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},
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{
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"/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd2",
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[]string{
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"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod1",
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"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod2",
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},
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},
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}
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for i, test := range tests {
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if refs, err := getMountRefsByDev(fm, test.mountPath); err != nil || !setEquivalent(test.expectedRefs, refs) {
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t.Errorf("%d. getMountRefsByDev(%q) = %v, %v; expected %v, nil", i, test.mountPath, refs, err, test.expectedRefs)
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}
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}
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}
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func TestPathWithinBase(t *testing.T) {
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tests := []struct {
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name string
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fullPath string
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basePath string
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expected bool
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}{
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{
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name: "good subpath",
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fullPath: "/a/b/c",
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basePath: "/a",
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expected: true,
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},
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{
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name: "good subpath 2",
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fullPath: "/a/b/c",
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basePath: "/a/b",
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expected: true,
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},
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{
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name: "good subpath end slash",
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fullPath: "/a/b/c/",
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basePath: "/a/b",
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expected: true,
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},
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{
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name: "good subpath backticks",
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fullPath: "/a/b/../c",
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basePath: "/a",
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expected: true,
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},
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{
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name: "good subpath equal",
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fullPath: "/a/b/c",
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basePath: "/a/b/c",
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expected: true,
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},
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{
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name: "good subpath equal 2",
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fullPath: "/a/b/c/",
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basePath: "/a/b/c",
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expected: true,
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},
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{
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name: "good subpath root",
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fullPath: "/a",
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basePath: "/",
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expected: true,
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},
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{
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name: "bad subpath parent",
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fullPath: "/a/b/c",
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basePath: "/a/b/c/d",
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expected: false,
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},
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{
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name: "bad subpath outside",
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fullPath: "/b/c",
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basePath: "/a/b/c",
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expected: false,
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},
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{
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name: "bad subpath prefix",
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fullPath: "/a/b/cd",
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basePath: "/a/b/c",
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expected: false,
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},
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{
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name: "bad subpath backticks",
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fullPath: "/a/../b",
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basePath: "/a",
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expected: false,
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},
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{
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name: "configmap subpath",
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fullPath: "/var/lib/kubelet/pods/uuid/volumes/kubernetes.io~configmap/config/..timestamp/file.txt",
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basePath: "/var/lib/kubelet/pods/uuid/volumes/kubernetes.io~configmap/config",
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expected: true,
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},
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}
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for _, test := range tests {
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if PathWithinBase(test.fullPath, test.basePath) != test.expected {
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t.Errorf("test %q failed: expected %v", test.name, test.expected)
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}
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}
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}
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func TestSearchMountPoints(t *testing.T) {
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base := `
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19 25 0:18 / /sys rw,nosuid,nodev,noexec,relatime shared:7 - sysfs sysfs rw
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20 25 0:4 / /proc rw,nosuid,nodev,noexec,relatime shared:12 - proc proc rw
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21 25 0:6 / /dev rw,nosuid,relatime shared:2 - devtmpfs udev rw,size=4058156k,nr_inodes=1014539,mode=755
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22 21 0:14 / /dev/pts rw,nosuid,noexec,relatime shared:3 - devpts devpts rw,gid=5,mode=620,ptmxmode=000
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23 25 0:19 / /run rw,nosuid,noexec,relatime shared:5 - tmpfs tmpfs rw,size=815692k,mode=755
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25 0 252:0 / / rw,relatime shared:1 - ext4 /dev/mapper/ubuntu--vg-root rw,errors=remount-ro,data=ordered
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26 19 0:12 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime shared:8 - securityfs securityfs rw
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27 21 0:21 / /dev/shm rw,nosuid,nodev shared:4 - tmpfs tmpfs rw
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28 23 0:22 / /run/lock rw,nosuid,nodev,noexec,relatime shared:6 - tmpfs tmpfs rw,size=5120k
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29 19 0:23 / /sys/fs/cgroup ro,nosuid,nodev,noexec shared:9 - tmpfs tmpfs ro,mode=755
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30 29 0:24 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime shared:10 - cgroup cgroup rw,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd
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31 19 0:25 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime shared:11 - pstore pstore rw
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32 29 0:26 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime shared:13 - cgroup cgroup rw,devices
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33 29 0:27 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime shared:14 - cgroup cgroup rw,freezer
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34 29 0:28 / /sys/fs/cgroup/pids rw,nosuid,nodev,noexec,relatime shared:15 - cgroup cgroup rw,pids
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35 29 0:29 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime shared:16 - cgroup cgroup rw,blkio
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36 29 0:30 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:17 - cgroup cgroup rw,memory
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37 29 0:31 / /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime shared:18 - cgroup cgroup rw,perf_event
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38 29 0:32 / /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime shared:19 - cgroup cgroup rw,hugetlb
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39 29 0:33 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:20 - cgroup cgroup rw,cpu,cpuacct
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40 29 0:34 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:21 - cgroup cgroup rw,cpuset
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41 29 0:35 / /sys/fs/cgroup/net_cls,net_prio rw,nosuid,nodev,noexec,relatime shared:22 - cgroup cgroup rw,net_cls,net_prio
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58 25 7:1 / /mnt/disks/blkvol1 rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordere
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`
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testcases := []struct {
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name string
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source string
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mountInfos string
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expectedRefs []string
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expectedErr error
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}{
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{
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"dir",
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"/mnt/disks/vol1",
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base,
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nil,
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nil,
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},
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{
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"dir-used",
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"/mnt/disks/vol1",
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base + `
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56 25 252:0 /mnt/disks/vol1 /var/lib/kubelet/pods/1890aef5-5a60-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test rw,relatime shared:1 - ext4 /dev/mapper/ubuntu--vg-root rw,errors=remount-ro,data=ordered
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57 25 0:45 / /mnt/disks/vol rw,relatime shared:36 - tmpfs tmpfs rw
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`,
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[]string{"/var/lib/kubelet/pods/1890aef5-5a60-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test"},
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nil,
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},
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{
|
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"tmpfs-vol",
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"/mnt/disks/vol1",
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base + `120 25 0:76 / /mnt/disks/vol1 rw,relatime shared:41 - tmpfs vol1 rw,size=10000k
|
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`,
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nil,
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nil,
|
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},
|
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{
|
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"tmpfs-vol-used-by-two-pods",
|
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"/mnt/disks/vol1",
|
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base + `120 25 0:76 / /mnt/disks/vol1 rw,relatime shared:41 - tmpfs vol1 rw,size=10000k
|
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196 25 0:76 / /var/lib/kubelet/pods/ade3ac21-5a5b-11e8-8559-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-8f263585 rw,relatime shared:41 - tmpfs vol1 rw,size=10000k
|
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228 25 0:76 / /var/lib/kubelet/pods/ac60532d-5a5b-11e8-8559-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-8f263585 rw,relatime shared:41 - tmpfs vol1 rw,size=10000k
|
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`,
|
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[]string{
|
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"/var/lib/kubelet/pods/ade3ac21-5a5b-11e8-8559-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-8f263585",
|
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"/var/lib/kubelet/pods/ac60532d-5a5b-11e8-8559-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-8f263585",
|
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},
|
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nil,
|
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},
|
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{
|
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"tmpfs-subdir-used-indirectly-via-bindmount-dir-by-one-pod",
|
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"/mnt/vol1/foo",
|
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base + `177 25 0:46 / /mnt/data rw,relatime shared:37 - tmpfs data rw
|
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190 25 0:46 /vol1 /mnt/vol1 rw,relatime shared:37 - tmpfs data rw
|
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191 25 0:46 /vol2 /mnt/vol2 rw,relatime shared:37 - tmpfs data rw
|
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62 25 0:46 /vol1/foo /var/lib/kubelet/pods/e25f2f01-5b06-11e8-8694-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test rw,relatime shared:37 - tmpfs data rw
|
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`,
|
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[]string{"/var/lib/kubelet/pods/e25f2f01-5b06-11e8-8694-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test"},
|
||||
nil,
|
||||
},
|
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{
|
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"dir-bindmounted",
|
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"/mnt/disks/vol2",
|
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base + `342 25 252:0 /mnt/disks/vol2 /mnt/disks/vol2 rw,relatime shared:1 - ext4 /dev/mapper/ubuntu--vg-root rw,errors=remount-ro,data=ordered
|
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`,
|
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nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"dir-bindmounted-used-by-one-pod",
|
||||
"/mnt/disks/vol2",
|
||||
base + `342 25 252:0 /mnt/disks/vol2 /mnt/disks/vol2 rw,relatime shared:1 - ext4 /dev/mapper/ubuntu--vg-root rw,errors=remount-ro,data=ordered
|
||||
77 25 252:0 /mnt/disks/vol2 /var/lib/kubelet/pods/f30dc360-5a5d-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-1fb30a1c rw,relatime shared:1 - ext4 /dev/mapper/ubuntu--vg-root rw,errors=remount-ro,data=ordered
|
||||
`,
|
||||
[]string{"/var/lib/kubelet/pods/f30dc360-5a5d-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-1fb30a1c"},
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"blockfs",
|
||||
"/mnt/disks/blkvol1",
|
||||
base + `58 25 7:1 / /mnt/disks/blkvol1 rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordered
|
||||
`,
|
||||
nil,
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"blockfs-used-by-one-pod",
|
||||
"/mnt/disks/blkvol1",
|
||||
base + `58 25 7:1 / /mnt/disks/blkvol1 rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordered
|
||||
62 25 7:1 / /var/lib/kubelet/pods/f19fe4e2-5a63-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordered
|
||||
`,
|
||||
[]string{"/var/lib/kubelet/pods/f19fe4e2-5a63-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test"},
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"blockfs-used-by-two-pods",
|
||||
"/mnt/disks/blkvol1",
|
||||
base + `58 25 7:1 / /mnt/disks/blkvol1 rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordered
|
||||
62 25 7:1 / /var/lib/kubelet/pods/f19fe4e2-5a63-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordered
|
||||
95 25 7:1 / /var/lib/kubelet/pods/4854a48b-5a64-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordered
|
||||
`,
|
||||
[]string{"/var/lib/kubelet/pods/f19fe4e2-5a63-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test",
|
||||
"/var/lib/kubelet/pods/4854a48b-5a64-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test"},
|
||||
nil,
|
||||
},
|
||||
}
|
||||
tmpFile, err := ioutil.TempFile("", "test-get-filetype")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer os.Remove(tmpFile.Name())
|
||||
defer tmpFile.Close()
|
||||
for _, v := range testcases {
|
||||
tmpFile.Truncate(0)
|
||||
tmpFile.Seek(0, 0)
|
||||
tmpFile.WriteString(v.mountInfos)
|
||||
tmpFile.Sync()
|
||||
refs, err := SearchMountPoints(v.source, tmpFile.Name())
|
||||
if !reflect.DeepEqual(refs, v.expectedRefs) {
|
||||
t.Errorf("test %q: expected Refs: %#v, got %#v", v.name, v.expectedRefs, refs)
|
||||
}
|
||||
if !reflect.DeepEqual(err, v.expectedErr) {
|
||||
t.Errorf("test %q: expected err: %v, got %v", v.name, v.expectedErr, err)
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user