b94ee6bcb1
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.
216 lines
10 KiB
Go
216 lines
10 KiB
Go
// +build !windows
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/*
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Copyright 2019 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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"path/filepath"
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"reflect"
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"testing"
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)
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func writeFile(content string) (string, string, error) {
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tempDir, err := ioutil.TempDir("", "mounter_shared_test")
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if err != nil {
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return "", "", err
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}
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filename := filepath.Join(tempDir, "mountinfo")
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err = ioutil.WriteFile(filename, []byte(content), 0600)
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if err != nil {
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os.RemoveAll(tempDir)
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return "", "", err
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}
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return tempDir, filename, nil
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}
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func TestParseMountInfo(t *testing.T) {
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info :=
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`62 0 253:0 / / rw,relatime shared:1 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
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78 62 0:41 / /tmp rw,nosuid,nodev shared:30 - tmpfs tmpfs rw,seclabel
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80 62 0:42 / /var/lib/nfs/rpc_pipefs rw,relatime shared:31 - rpc_pipefs sunrpc rw
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82 62 0:43 / /var/lib/foo rw,relatime shared:32 - tmpfs tmpfs rw
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83 63 0:44 / /var/lib/bar rw,relatime - tmpfs tmpfs rw
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227 62 253:0 /var/lib/docker/devicemapper /var/lib/docker/devicemapper rw,relatime - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered
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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
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76 17 8:1 / /mnt/stateful_partition rw,nosuid,nodev,noexec,relatime - ext4 /dev/sda1 rw,commit=30,data=ordered
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80 17 8:1 /var /var rw,nosuid,nodev,noexec,relatime shared:30 - ext4 /dev/sda1 rw,commit=30,data=ordered
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189 80 8:1 /var/lib/kubelet /var/lib/kubelet rw,relatime shared:30 - ext4 /dev/sda1 rw,commit=30,data=ordered
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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222 24 253:0 /tmp/src /mnt/dst rw,relatime shared:1 - ext4 /dev/mapper/vagrant--vg-root rw,errors=remount-ro,data=ordered
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28 18 0:24 / /sys/fs/cgroup ro,nosuid,nodev,noexec shared:9 - tmpfs tmpfs ro,mode=755
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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
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31 28 0:27 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:13 - cgroup cgroup rw,cpuset
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32 28 0:28 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:14 - cgroup cgroup rw,cpu,cpuacct
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33 28 0:29 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime shared:15 - cgroup cgroup rw,freezer
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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
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35 28 0:31 / /sys/fs/cgroup/pids rw,nosuid,nodev,noexec,relatime shared:17 - cgroup cgroup rw,pids
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36 28 0:32 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime shared:18 - cgroup cgroup rw,devices
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37 28 0:33 / /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime shared:19 - cgroup cgroup rw,hugetlb
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38 28 0:34 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime shared:20 - cgroup cgroup rw,blkio
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39 28 0:35 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:21 - cgroup cgroup rw,memory
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40 28 0:36 / /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime shared:22 - cgroup cgroup rw,perf_event
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`
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tempDir, filename, err := writeFile(info)
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if err != nil {
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t.Fatalf("cannot create temporary file: %v", err)
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}
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defer os.RemoveAll(tempDir)
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tests := []struct {
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name string
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id int
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expectedInfo mountInfo
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}{
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{
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"simple bind mount",
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189,
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mountInfo{
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id: 189,
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parentID: 80,
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majorMinor: "8:1",
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root: "/var/lib/kubelet",
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source: "/dev/sda1",
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mountPoint: "/var/lib/kubelet",
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optionalFields: []string{"shared:30"},
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fsType: "ext4",
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mountOptions: []string{"rw", "relatime"},
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superOptions: []string{"rw", "commit=30", "data=ordered"},
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},
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},
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{
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"bind mount a directory",
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222,
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mountInfo{
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id: 222,
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parentID: 24,
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majorMinor: "253:0",
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root: "/tmp/src",
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source: "/dev/mapper/vagrant--vg-root",
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mountPoint: "/mnt/dst",
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optionalFields: []string{"shared:1"},
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fsType: "ext4",
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mountOptions: []string{"rw", "relatime"},
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superOptions: []string{"rw", "errors=remount-ro", "data=ordered"},
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},
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},
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{
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"more than one optional fields",
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224,
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mountInfo{
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id: 224,
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parentID: 62,
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majorMinor: "253:0",
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root: "/var/lib/docker/devicemapper/test/shared",
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source: "/dev/mapper/ssd-root",
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mountPoint: "/var/lib/docker/devicemapper/test/shared",
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optionalFields: []string{"master:1", "shared:44"},
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fsType: "ext4",
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mountOptions: []string{"rw", "relatime"},
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superOptions: []string{"rw", "seclabel", "data=ordered"},
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},
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},
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{
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"cgroup-mountpoint",
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28,
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mountInfo{
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id: 28,
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parentID: 18,
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majorMinor: "0:24",
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root: "/",
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source: "tmpfs",
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mountPoint: "/sys/fs/cgroup",
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optionalFields: []string{"shared:9"},
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fsType: "tmpfs",
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mountOptions: []string{"ro", "nosuid", "nodev", "noexec"},
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superOptions: []string{"ro", "mode=755"},
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},
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},
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{
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"cgroup-subsystem-systemd-mountpoint",
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29,
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mountInfo{
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id: 29,
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parentID: 28,
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majorMinor: "0:25",
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root: "/",
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source: "cgroup",
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mountPoint: "/sys/fs/cgroup/systemd",
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optionalFields: []string{"shared:10"},
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fsType: "cgroup",
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mountOptions: []string{"rw", "nosuid", "nodev", "noexec", "relatime"},
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superOptions: []string{"rw", "xattr", "release_agent=/lib/systemd/systemd-cgroups-agent", "name=systemd"},
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},
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},
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{
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"cgroup-subsystem-cpuset-mountpoint",
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31,
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mountInfo{
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id: 31,
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parentID: 28,
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majorMinor: "0:27",
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root: "/",
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source: "cgroup",
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mountPoint: "/sys/fs/cgroup/cpuset",
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optionalFields: []string{"shared:13"},
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fsType: "cgroup",
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mountOptions: []string{"rw", "nosuid", "nodev", "noexec", "relatime"},
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superOptions: []string{"rw", "cpuset"},
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},
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},
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}
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infos, err := parseMountInfo(filename)
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if err != nil {
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t.Fatalf("Cannot parse %s: %s", filename, err)
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}
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for _, test := range tests {
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found := false
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for _, info := range infos {
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if info.id == test.id {
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found = true
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if !reflect.DeepEqual(info, test.expectedInfo) {
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t.Errorf("Test case %q:\n expected: %+v\n got: %+v", test.name, test.expectedInfo, info)
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}
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break
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}
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}
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if !found {
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t.Errorf("Test case %q: mountPoint %d not found", test.name, test.id)
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}
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}
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}
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