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Split HostUtil functionality into its own files

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This patch takes all the HostUtil functionality currently found in
mount*.go files and copies it into hostutil*.go files. Care was taken to
preserve git history to the fullest extent.

As part of doing this, some common functionality was moved into
mount_helper files in preperation for HostUtils to stay in k/k and Mount
to move out. THe tests for each relevant function were moved to test
files to match the appropriate location.
This commit is contained in:
Travis Rhoden
2019-08-22 10:52:39 -06:00
parent e0050ebc94
commit b94ee6bcb1
19 changed files with 162 additions and 4634 deletions
Download Patch File Download Diff File Expand all files Collapse all files

605
pkg/util/mount/hostutil_linux_test.go
View File

@@ -24,205 +24,12 @@ import (
"net"
"os"
"path/filepath"
"reflect"
"strings"
"testing"
"k8s.io/utils/exec"
)
func TestReadProcMountsFrom(t *testing.T) {
successCase :=
`/dev/0 /path/to/0 type0 flags 0 0
/dev/1 /path/to/1 type1 flags 1 1
/dev/2 /path/to/2 type2 flags,1,2=3 2 2
`
// NOTE: readProcMountsFrom has been updated to using fnv.New32a()
mounts, err := parseProcMounts([]byte(successCase))
if err != nil {
t.Errorf("expected success, got %v", err)
}
if len(mounts) != 3 {
t.Fatalf("expected 3 mounts, got %d", len(mounts))
}
mp := MountPoint{"/dev/0", "/path/to/0", "type0", []string{"flags"}, 0, 0}
if !mountPointsEqual(&mounts[0], &mp) {
t.Errorf("got unexpected MountPoint[0]: %#v", mounts[0])
}
mp = MountPoint{"/dev/1", "/path/to/1", "type1", []string{"flags"}, 1, 1}
if !mountPointsEqual(&mounts[1], &mp) {
t.Errorf("got unexpected MountPoint[1]: %#v", mounts[1])
}
mp = MountPoint{"/dev/2", "/path/to/2", "type2", []string{"flags", "1", "2=3"}, 2, 2}
if !mountPointsEqual(&mounts[2], &mp) {
t.Errorf("got unexpected MountPoint[2]: %#v", mounts[2])
}
errorCases := []string{
"/dev/0 /path/to/mount\n",
"/dev/1 /path/to/mount type flags a 0\n",
"/dev/2 /path/to/mount type flags 0 b\n",
}
for _, ec := range errorCases {
_, err := parseProcMounts([]byte(ec))
if err == nil {
t.Errorf("expected error")
}
}
}
func mountPointsEqual(a, b *MountPoint) bool {
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 {
return false
}
return true
}
func TestGetMountRefs(t *testing.T) {
fm := &FakeMounter{
MountPoints: []MountPoint{
{Device: "/dev/sdb", Path: "/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd"},
{Device: "/dev/sdb", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd-in-pod"},
{Device: "/dev/sdc", Path: "/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd2"},
{Device: "/dev/sdc", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod1"},
{Device: "/dev/sdc", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod2"},
},
}
tests := []struct {
mountPath string
expectedRefs []string
}{
{
"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd-in-pod",
[]string{
"/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd",
},
},
{
"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod1",
[]string{
"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod2",
"/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd2",
},
},
{
"/var/fake/directory/that/doesnt/exist",
[]string{},
},
}
for i, test := range tests {
if refs, err := fm.GetMountRefs(test.mountPath); err != nil || !setEquivalent(test.expectedRefs, refs) {
t.Errorf("%d. getMountRefs(%q) = %v, %v; expected %v, nil", i, test.mountPath, refs, err, test.expectedRefs)
}
}
}
func setEquivalent(set1, set2 []string) bool {
map1 := make(map[string]bool)
map2 := make(map[string]bool)
for _, s := range set1 {
map1[s] = true
}
for _, s := range set2 {
map2[s] = true
}
for s := range map1 {
if !map2[s] {
return false
}
}
for s := range map2 {
if !map1[s] {
return false
}
}
return true
}
func TestGetDeviceNameFromMount(t *testing.T) {
fm := &FakeMounter{
MountPoints: []MountPoint{
{Device: "/dev/disk/by-path/prefix-lun-1",
Path: "/mnt/111"},
{Device: "/dev/disk/by-path/prefix-lun-1",
Path: "/mnt/222"},
},
}
tests := []struct {
mountPath string
expectedDevice string
expectedRefs int
}{
{
"/mnt/222",
"/dev/disk/by-path/prefix-lun-1",
2,
},
}
for i, test := range tests {
if device, refs, err := GetDeviceNameFromMount(fm, test.mountPath); err != nil || test.expectedRefs != refs || test.expectedDevice != device {
t.Errorf("%d. GetDeviceNameFromMount(%s) = (%s, %d), %v; expected (%s,%d), nil", i, test.mountPath, device, refs, err, test.expectedDevice, test.expectedRefs)
}
}
}
func TestGetMountRefsByDev(t *testing.T) {
fm := &FakeMounter{
MountPoints: []MountPoint{
{Device: "/dev/sdb", Path: "/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd"},
{Device: "/dev/sdb", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd-in-pod"},
{Device: "/dev/sdc", Path: "/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd2"},
{Device: "/dev/sdc", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod1"},
{Device: "/dev/sdc", Path: "/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod2"},
},
}
tests := []struct {
mountPath string
expectedRefs []string
}{
{
"/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd",
[]string{
"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd-in-pod",
},
},
{
"/var/lib/kubelet/plugins/kubernetes.io/gce-pd/mounts/gce-pd2",
[]string{
"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod1",
"/var/lib/kubelet/pods/some-pod/volumes/kubernetes.io~gce-pd/gce-pd2-in-pod2",
},
},
}
for i, test := range tests {
if refs, err := getMountRefsByDev(fm, test.mountPath); err != nil || !setEquivalent(test.expectedRefs, refs) {
t.Errorf("%d. getMountRefsByDev(%q) = %v, %v; expected %v, nil", i, test.mountPath, refs, err, test.expectedRefs)
}
}
}
func writeFile(content string) (string, string, error) {
tempDir, err := ioutil.TempDir("", "mounter_shared_test")
if err != nil {
return "", "", err
}
filename := filepath.Join(tempDir, "mountinfo")
err = ioutil.WriteFile(filename, []byte(content), 0600)
if err != nil {
os.RemoveAll(tempDir)
return "", "", err
}
return tempDir, filename, nil
}
func TestIsSharedSuccess(t *testing.T) {
successMountInfo :=
`62 0 253:0 / / rw,relatime shared:1 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
@@ -332,268 +139,6 @@ func TestIsSharedFailure(t *testing.T) {
}
}
func TestPathWithinBase(t *testing.T) {
tests := []struct {
name string
fullPath string
basePath string
expected bool
}{
{
name: "good subpath",
fullPath: "/a/b/c",
basePath: "/a",
expected: true,
},
{
name: "good subpath 2",
fullPath: "/a/b/c",
basePath: "/a/b",
expected: true,
},
{
name: "good subpath end slash",
fullPath: "/a/b/c/",
basePath: "/a/b",
expected: true,
},
{
name: "good subpath backticks",
fullPath: "/a/b/../c",
basePath: "/a",
expected: true,
},
{
name: "good subpath equal",
fullPath: "/a/b/c",
basePath: "/a/b/c",
expected: true,
},
{
name: "good subpath equal 2",
fullPath: "/a/b/c/",
basePath: "/a/b/c",
expected: true,
},
{
name: "good subpath root",
fullPath: "/a",
basePath: "/",
expected: true,
},
{
name: "bad subpath parent",
fullPath: "/a/b/c",
basePath: "/a/b/c/d",
expected: false,
},
{
name: "bad subpath outside",
fullPath: "/b/c",
basePath: "/a/b/c",
expected: false,
},
{
name: "bad subpath prefix",
fullPath: "/a/b/cd",
basePath: "/a/b/c",
expected: false,
},
{
name: "bad subpath backticks",
fullPath: "/a/../b",
basePath: "/a",
expected: false,
},
{
name: "configmap subpath",
fullPath: "/var/lib/kubelet/pods/uuid/volumes/kubernetes.io~configmap/config/..timestamp/file.txt",
basePath: "/var/lib/kubelet/pods/uuid/volumes/kubernetes.io~configmap/config",
expected: true,
},
}
for _, test := range tests {
if PathWithinBase(test.fullPath, test.basePath) != test.expected {
t.Errorf("test %q failed: expected %v", test.name, test.expected)
}
}
}
func TestParseMountInfo(t *testing.T) {
info :=
`62 0 253:0 / / rw,relatime shared:1 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
78 62 0:41 / /tmp rw,nosuid,nodev shared:30 - tmpfs tmpfs rw,seclabel
80 62 0:42 / /var/lib/nfs/rpc_pipefs rw,relatime shared:31 - rpc_pipefs sunrpc rw
82 62 0:43 / /var/lib/foo rw,relatime shared:32 - tmpfs tmpfs rw
83 63 0:44 / /var/lib/bar rw,relatime - tmpfs tmpfs rw
227 62 253:0 /var/lib/docker/devicemapper /var/lib/docker/devicemapper rw,relatime - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
224 62 253:0 /var/lib/docker/devicemapper/test/shared /var/lib/docker/devicemapper/test/shared rw,relatime master:1 shared:44 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
76 17 8:1 / /mnt/stateful_partition rw,nosuid,nodev,noexec,relatime - ext4 /dev/sda1 rw,commit=30,data=ordered
80 17 8:1 /var /var rw,nosuid,nodev,noexec,relatime shared:30 - ext4 /dev/sda1 rw,commit=30,data=ordered
189 80 8:1 /var/lib/kubelet /var/lib/kubelet rw,relatime shared:30 - ext4 /dev/sda1 rw,commit=30,data=ordered
818 77 8:40 / /var/lib/kubelet/pods/c25464af-e52e-11e7-ab4d-42010a800002/volumes/kubernetes.io~gce-pd/vol1 rw,relatime shared:290 - ext4 /dev/sdc rw,data=ordered
819 78 8:48 / /var/lib/kubelet/pods/c25464af-e52e-11e7-ab4d-42010a800002/volumes/kubernetes.io~gce-pd/vol1 rw,relatime shared:290 - ext4 /dev/sdd rw,data=ordered
900 100 8:48 /dir1 /var/lib/kubelet/pods/c25464af-e52e-11e7-ab4d-42010a800002/volume-subpaths/vol1/subpath1/0 rw,relatime shared:290 - ext4 /dev/sdd rw,data=ordered
901 101 8:1 /dir1 /var/lib/kubelet/pods/c25464af-e52e-11e7-ab4d-42010a800002/volume-subpaths/vol1/subpath1/1 rw,relatime shared:290 - ext4 /dev/sdd rw,data=ordered
902 102 8:1 /var/lib/kubelet/pods/d4076f24-e53a-11e7-ba15-42010a800002/volumes/kubernetes.io~empty-dir/vol1/dir1 /var/lib/kubelet/pods/d4076f24-e53a-11e7-ba15-42010a800002/volume-subpaths/vol1/subpath1/0 rw,relatime shared:30 - ext4 /dev/sda1 rw,commit=30,data=ordered
903 103 8:1 /var/lib/kubelet/pods/d4076f24-e53a-11e7-ba15-42010a800002/volumes/kubernetes.io~empty-dir/vol2/dir1 /var/lib/kubelet/pods/d4076f24-e53a-11e7-ba15-42010a800002/volume-subpaths/vol1/subpath1/1 rw,relatime shared:30 - ext4 /dev/sda1 rw,commit=30,data=ordered
178 25 253:0 /etc/bar /var/lib/kubelet/pods/12345/volume-subpaths/vol1/subpath1/0 rw,relatime shared:1 - ext4 /dev/sdb2 rw,errors=remount-ro,data=ordered
698 186 0:41 /tmp1/dir1 /var/lib/kubelet/pods/41135147-e697-11e7-9342-42010a800002/volume-subpaths/vol1/subpath1/0 rw shared:26 - tmpfs tmpfs rw
918 77 8:50 / /var/lib/kubelet/pods/2345/volumes/kubernetes.io~gce-pd/vol1 rw,relatime shared:290 - ext4 /dev/sdc rw,data=ordered
919 78 8:58 / /var/lib/kubelet/pods/2345/volumes/kubernetes.io~gce-pd/vol1 rw,relatime shared:290 - ext4 /dev/sdd rw,data=ordered
920 100 8:50 /dir1 /var/lib/kubelet/pods/2345/volume-subpaths/vol1/subpath1/0 rw,relatime shared:290 - ext4 /dev/sdc rw,data=ordered
150 23 1:58 / /media/nfs_vol rw,relatime shared:89 - nfs4 172.18.4.223:/srv/nfs rw,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=172.18.4.223,local_lock=none,addr=172.18.4.223
151 24 1:58 / /media/nfs_bindmount rw,relatime shared:89 - nfs4 172.18.4.223:/srv/nfs/foo rw,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=172.18.4.223,local_lock=none,addr=172.18.4.223
134 23 0:58 / /var/lib/kubelet/pods/43219158-e5e1-11e7-a392-0e858b8eaf40/volumes/kubernetes.io~nfs/nfs1 rw,relatime shared:89 - nfs4 172.18.4.223:/srv/nfs rw,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=172.18.4.223,local_lock=none,addr=172.18.4.223
187 23 0:58 / /var/lib/kubelet/pods/1fc5ea21-eff4-11e7-ac80-0e858b8eaf40/volumes/kubernetes.io~nfs/nfs2 rw,relatime shared:96 - nfs4 172.18.4.223:/srv/nfs2 rw,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=172.18.4.223,local_lock=none,addr=172.18.4.223
188 24 0:58 / /var/lib/kubelet/pods/43219158-e5e1-11e7-a392-0e858b8eaf40/volume-subpaths/nfs1/subpath1/0 rw,relatime shared:89 - nfs4 172.18.4.223:/srv/nfs/foo rw,vers=4.0,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=172.18.4.223,local_lock=none,addr=172.18.4.223
347 60 0:71 / /var/lib/kubelet/pods/13195d46-f9fa-11e7-bbf1-5254007a695a/volumes/kubernetes.io~nfs/vol2 rw,relatime shared:170 - nfs 172.17.0.3:/exports/2 rw,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=172.17.0.3,mountvers=3,mountport=20048,mountproto=udp,local_lock=none,addr=172.17.0.3
222 24 253:0 /tmp/src /mnt/dst rw,relatime shared:1 - ext4 /dev/mapper/vagrant--vg-root rw,errors=remount-ro,data=ordered
28 18 0:24 / /sys/fs/cgroup ro,nosuid,nodev,noexec shared:9 - tmpfs tmpfs ro,mode=755
29 28 0:25 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime shared:10 - cgroup cgroup rw,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd
31 28 0:27 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:13 - cgroup cgroup rw,cpuset
32 28 0:28 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:14 - cgroup cgroup rw,cpu,cpuacct
33 28 0:29 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime shared:15 - cgroup cgroup rw,freezer
34 28 0:30 / /sys/fs/cgroup/net_cls,net_prio rw,nosuid,nodev,noexec,relatime shared:16 - cgroup cgroup rw,net_cls,net_prio
35 28 0:31 / /sys/fs/cgroup/pids rw,nosuid,nodev,noexec,relatime shared:17 - cgroup cgroup rw,pids
36 28 0:32 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime shared:18 - cgroup cgroup rw,devices
37 28 0:33 / /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime shared:19 - cgroup cgroup rw,hugetlb
38 28 0:34 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime shared:20 - cgroup cgroup rw,blkio
39 28 0:35 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:21 - cgroup cgroup rw,memory
40 28 0:36 / /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime shared:22 - cgroup cgroup rw,perf_event
`
tempDir, filename, err := writeFile(info)
if err != nil {
t.Fatalf("cannot create temporary file: %v", err)
}
defer os.RemoveAll(tempDir)
tests := []struct {
name string
id int
expectedInfo mountInfo
}{
{
"simple bind mount",
189,
mountInfo{
id: 189,
parentID: 80,
majorMinor: "8:1",
root: "/var/lib/kubelet",
source: "/dev/sda1",
mountPoint: "/var/lib/kubelet",
optionalFields: []string{"shared:30"},
fsType: "ext4",
mountOptions: []string{"rw", "relatime"},
superOptions: []string{"rw", "commit=30", "data=ordered"},
},
},
{
"bind mount a directory",
222,
mountInfo{
id: 222,
parentID: 24,
majorMinor: "253:0",
root: "/tmp/src",
source: "/dev/mapper/vagrant--vg-root",
mountPoint: "/mnt/dst",
optionalFields: []string{"shared:1"},
fsType: "ext4",
mountOptions: []string{"rw", "relatime"},
superOptions: []string{"rw", "errors=remount-ro", "data=ordered"},
},
},
{
"more than one optional fields",
224,
mountInfo{
id: 224,
parentID: 62,
majorMinor: "253:0",
root: "/var/lib/docker/devicemapper/test/shared",
source: "/dev/mapper/ssd-root",
mountPoint: "/var/lib/docker/devicemapper/test/shared",
optionalFields: []string{"master:1", "shared:44"},
fsType: "ext4",
mountOptions: []string{"rw", "relatime"},
superOptions: []string{"rw", "seclabel", "data=ordered"},
},
},
{
"cgroup-mountpoint",
28,
mountInfo{
id: 28,
parentID: 18,
majorMinor: "0:24",
root: "/",
source: "tmpfs",
mountPoint: "/sys/fs/cgroup",
optionalFields: []string{"shared:9"},
fsType: "tmpfs",
mountOptions: []string{"ro", "nosuid", "nodev", "noexec"},
superOptions: []string{"ro", "mode=755"},
},
},
{
"cgroup-subsystem-systemd-mountpoint",
29,
mountInfo{
id: 29,
parentID: 28,
majorMinor: "0:25",
root: "/",
source: "cgroup",
mountPoint: "/sys/fs/cgroup/systemd",
optionalFields: []string{"shared:10"},
fsType: "cgroup",
mountOptions: []string{"rw", "nosuid", "nodev", "noexec", "relatime"},
superOptions: []string{"rw", "xattr", "release_agent=/lib/systemd/systemd-cgroups-agent", "name=systemd"},
},
},
{
"cgroup-subsystem-cpuset-mountpoint",
31,
mountInfo{
id: 31,
parentID: 28,
majorMinor: "0:27",
root: "/",
source: "cgroup",
mountPoint: "/sys/fs/cgroup/cpuset",
optionalFields: []string{"shared:13"},
fsType: "cgroup",
mountOptions: []string{"rw", "nosuid", "nodev", "noexec", "relatime"},
superOptions: []string{"rw", "cpuset"},
},
},
}
infos, err := parseMountInfo(filename)
if err != nil {
t.Fatalf("Cannot parse %s: %s", filename, err)
}
for _, test := range tests {
found := false
for _, info := range infos {
if info.id == test.id {
found = true
if !reflect.DeepEqual(info, test.expectedInfo) {
t.Errorf("Test case %q:\n expected: %+v\n got: %+v", test.name, test.expectedInfo, info)
}
break
}
}
if !found {
t.Errorf("Test case %q: mountPoint %d not found", test.name, test.id)
}
}
}
func TestGetSELinuxSupport(t *testing.T) {
info :=
`62 0 253:0 / / rw,relatime shared:1 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
@@ -766,153 +311,3 @@ func isOperationNotPermittedError(err error) bool {
}
return false
}
func TestSearchMountPoints(t *testing.T) {
base := `
19 25 0:18 / /sys rw,nosuid,nodev,noexec,relatime shared:7 - sysfs sysfs rw
20 25 0:4 / /proc rw,nosuid,nodev,noexec,relatime shared:12 - proc proc rw
21 25 0:6 / /dev rw,nosuid,relatime shared:2 - devtmpfs udev rw,size=4058156k,nr_inodes=1014539,mode=755
22 21 0:14 / /dev/pts rw,nosuid,noexec,relatime shared:3 - devpts devpts rw,gid=5,mode=620,ptmxmode=000
23 25 0:19 / /run rw,nosuid,noexec,relatime shared:5 - tmpfs tmpfs rw,size=815692k,mode=755
25 0 252:0 / / rw,relatime shared:1 - ext4 /dev/mapper/ubuntu--vg-root rw,errors=remount-ro,data=ordered
26 19 0:12 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime shared:8 - securityfs securityfs rw
27 21 0:21 / /dev/shm rw,nosuid,nodev shared:4 - tmpfs tmpfs rw
28 23 0:22 / /run/lock rw,nosuid,nodev,noexec,relatime shared:6 - tmpfs tmpfs rw,size=5120k
29 19 0:23 / /sys/fs/cgroup ro,nosuid,nodev,noexec shared:9 - tmpfs tmpfs ro,mode=755
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
31 19 0:25 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime shared:11 - pstore pstore rw
32 29 0:26 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime shared:13 - cgroup cgroup rw,devices
33 29 0:27 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime shared:14 - cgroup cgroup rw,freezer
34 29 0:28 / /sys/fs/cgroup/pids rw,nosuid,nodev,noexec,relatime shared:15 - cgroup cgroup rw,pids
35 29 0:29 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime shared:16 - cgroup cgroup rw,blkio
36 29 0:30 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:17 - cgroup cgroup rw,memory
37 29 0:31 / /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime shared:18 - cgroup cgroup rw,perf_event
38 29 0:32 / /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime shared:19 - cgroup cgroup rw,hugetlb
39 29 0:33 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:20 - cgroup cgroup rw,cpu,cpuacct
40 29 0:34 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:21 - cgroup cgroup rw,cpuset
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
58 25 7:1 / /mnt/disks/blkvol1 rw,relatime shared:38 - ext4 /dev/loop1 rw,data=ordere
`
testcases := []struct {
name string
source string
mountInfos string
expectedRefs []string
expectedErr error
}{
{
"dir",
"/mnt/disks/vol1",
base,
nil,
nil,
},
{
"dir-used",
"/mnt/disks/vol1",
base + `
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
57 25 0:45 / /mnt/disks/vol rw,relatime shared:36 - tmpfs tmpfs rw
`,
[]string{"/var/lib/kubelet/pods/1890aef5-5a60-11e8-962f-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test"},
nil,
},
{
"tmpfs-vol",
"/mnt/disks/vol1",
base + `120 25 0:76 / /mnt/disks/vol1 rw,relatime shared:41 - tmpfs vol1 rw,size=10000k
`,
nil,
nil,
},
{
"tmpfs-vol-used-by-two-pods",
"/mnt/disks/vol1",
base + `120 25 0:76 / /mnt/disks/vol1 rw,relatime shared:41 - tmpfs vol1 rw,size=10000k
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
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
`,
[]string{
"/var/lib/kubelet/pods/ade3ac21-5a5b-11e8-8559-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-8f263585",
"/var/lib/kubelet/pods/ac60532d-5a5b-11e8-8559-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-8f263585",
},
nil,
},
{
"tmpfs-subdir-used-indirectly-via-bindmount-dir-by-one-pod",
"/mnt/vol1/foo",
base + `177 25 0:46 / /mnt/data rw,relatime shared:37 - tmpfs data rw
190 25 0:46 /vol1 /mnt/vol1 rw,relatime shared:37 - tmpfs data rw
191 25 0:46 /vol2 /mnt/vol2 rw,relatime shared:37 - tmpfs data rw
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
`,
[]string{"/var/lib/kubelet/pods/e25f2f01-5b06-11e8-8694-000c29bb0377/volumes/kubernetes.io~local-volume/local-pv-test"},
nil,
},
{
"dir-bindmounted",
"/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
`,
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)
}
}
}