-
Notifications
You must be signed in to change notification settings - Fork 81
/
discovery.go
378 lines (343 loc) · 11.1 KB
/
discovery.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
/*
Copyright © 2021 Alibaba Group Holding Ltd.
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.
*/
package discovery
import (
"context"
"encoding/json"
"fmt"
"os"
"regexp"
"strconv"
"strings"
localtype "github.com/alibaba/open-local/pkg"
"github.com/alibaba/open-local/pkg/agent/common"
localv1alpha1 "github.com/alibaba/open-local/pkg/apis/storage/v1alpha1"
clientset "github.com/alibaba/open-local/pkg/generated/clientset/versioned"
"github.com/alibaba/open-local/pkg/utils"
"github.com/alibaba/open-local/pkg/utils/lvm"
"github.com/alibaba/open-local/pkg/utils/spdk"
units "github.com/docker/go-units"
snapshot "github.com/kubernetes-csi/external-snapshotter/client/v4/clientset/versioned"
corev1 "k8s.io/api/core/v1"
k8serr "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/record"
log "k8s.io/klog/v2"
"k8s.io/utils/mount"
)
// Discoverer update block device, VG and mountpoint info to Cache
type Discoverer struct {
*common.Configuration
// kubeclientset is a standard kubernetes clientset
kubeclientset kubernetes.Interface
localclientset clientset.Interface
snapclient snapshot.Interface
// K8sMounter used to verify mountpoints
K8sMounter mount.Interface
recorder record.EventRecorder
// 'spdk' indicate if use SPDK storage backend
spdk bool
spdkclient *spdk.SpdkClient
}
type ReservedVGInfo struct {
vgName string
reservedPercent float64
reservedSize uint64
}
const (
DefaultFS = "ext4"
AnnoStorageReserve = "csi.aliyun.com/storage-reserved"
)
// NewDiscoverer return Discoverer
func NewDiscoverer(config *common.Configuration, kubeclientset kubernetes.Interface, localclientset clientset.Interface, snapclient snapshot.Interface, recorder record.EventRecorder) *Discoverer {
return &Discoverer{
Configuration: config,
localclientset: localclientset,
kubeclientset: kubeclientset,
snapclient: snapclient,
K8sMounter: mount.New("" /* default mount path */),
recorder: recorder,
spdk: false,
}
}
func (d *Discoverer) getNodeLocalStorage() (*localv1alpha1.NodeLocalStorage, error) {
nls, err := d.localclientset.CsiV1alpha1().NodeLocalStorages().Get(context.Background(), d.Nodename, metav1.GetOptions{})
if err != nil {
if k8serr.IsNotFound(err) {
log.Infof("node local storage %s not found, waiting for the controller to create the resource", d.Nodename)
} else {
log.Errorf("get NodeLocalStorages failed: %s", err.Error())
}
} else {
if nls.Spec.SpdkConfig.DeviceType != "" {
if d.spdkclient == nil {
if d.spdkclient = spdk.NewSpdkClient(nls.Spec.SpdkConfig.RpcSocket); d.spdkclient != nil {
d.spdk = true
}
}
}
}
return nls, err
}
// Discover update local storage periodically
func (d *Discoverer) Discover() {
if nls, err := d.getNodeLocalStorage(); err != nil {
return
} else {
log.V(4).Infof("update node local storage %s status", d.Nodename)
nlsCopy := nls.DeepCopy()
// get anno
reservedVGInfos := make(map[string]ReservedVGInfo)
if anno, exist := nlsCopy.Annotations[AnnoStorageReserve]; exist {
if reservedVGInfos, err = getReservedVGInfo(anno); err != nil {
log.Errorf("get reserved vg info failed: %s, but we ignore...", err.Error())
return
}
}
// get status first, for we need support regexp
newStatus := new(localv1alpha1.NodeLocalStorageStatus)
if err := d.discoverVGs(newStatus, reservedVGInfos); err != nil {
log.Errorf("discover VG error: %s", err.Error())
return
}
if err := d.discoverDevices(newStatus); err != nil {
log.Errorf("discover Device error: %s", err.Error())
return
}
if err := d.discoverMountPoints(newStatus); err != nil {
log.Errorf("discover MountPoint error: %s", err.Error())
return
}
newStatus.NodeStorageInfo.Phase = localv1alpha1.NodeStorageRunning
newStatus.NodeStorageInfo.State.Status = localv1alpha1.ConditionTrue
newStatus.NodeStorageInfo.State.Type = localv1alpha1.StorageReady
lastHeartbeatTime := metav1.Now()
newStatus.NodeStorageInfo.State.LastHeartbeatTime = &lastHeartbeatTime
nlsCopy.Status.NodeStorageInfo = newStatus.NodeStorageInfo
nlsCopy.Status.FilteredStorageInfo.VolumeGroups = FilterVGInfo(nlsCopy)
nlsCopy.Status.FilteredStorageInfo.MountPoints = FilterMPInfo(nlsCopy)
nlsCopy.Status.FilteredStorageInfo.Devices = FilterDeviceInfo(nlsCopy)
nlsCopy.Status.FilteredStorageInfo.UpdateStatus.Status = localv1alpha1.UpdateStatusAccepted
lastUpdateTime := metav1.Now()
nlsCopy.Status.FilteredStorageInfo.UpdateStatus.LastUpdateTime = &lastUpdateTime
nlsCopy.Status.FilteredStorageInfo.UpdateStatus.Reason = ""
if d.spdk {
d.createSpdkBdevs(&nlsCopy.Status.FilteredStorageInfo.Devices)
}
// only update status
log.Infof("update nls %s", nlsCopy.Name)
_, err = d.localclientset.CsiV1alpha1().NodeLocalStorages().UpdateStatus(context.Background(), nlsCopy, metav1.UpdateOptions{})
if err != nil {
log.Errorf("local storage CRD updateStatus error: %s", err.Error())
return
}
}
}
// Create AIO bdevs
func (d *Discoverer) createSpdkBdevs(devices *[]string) {
var found bool
bdevs, err := d.spdkclient.GetBdevs()
if err != nil {
log.Error("createSpdkBdevs - GetBdevs:", err.Error())
return
}
for _, dev := range *devices {
found = false
for _, bdev := range *bdevs {
if bdev.GetFilename() == dev {
found = true
break
}
}
if !found {
bdevName := "bdev-aio" + strings.Replace(dev, "/", "_", -1)
if _, err := d.spdkclient.CreateBdev(bdevName, dev); err != nil {
log.Error("createSpdkBdevs - CreateBdev failed:", err.Error())
}
}
}
}
// InitResource will create relevant resource
func (d *Discoverer) InitResource() {
log.Info("start to init resource")
nls, err := d.getNodeLocalStorage()
if err != nil {
log.Error("InitResource - getNodeLocalStorage:", err.Error())
return
}
vgs := nls.Spec.ResourceToBeInited.VGs
mountpoints := nls.Spec.ResourceToBeInited.MountPoints
if !d.spdk {
for _, vg := range vgs {
if _, err := lvm.LookupVolumeGroup(vg.Name); err == lvm.ErrVolumeGroupNotFound {
err := d.createVG(vg.Name, vg.Devices)
if err != nil {
msg := fmt.Sprintf("create vg %s with device %v failed: %s. you can try command \"vgcreate %s %v --force\" manually on this node", vg.Name, vg.Devices, err.Error(), vg.Name, strings.Join(vg.Devices, " "))
log.Error(msg)
d.recorder.Event(nls, corev1.EventTypeWarning, localtype.EventCreateVGFailed, msg)
}
}
}
} else {
var found bool
bdevs, err := d.spdkclient.GetBdevs()
if err != nil {
log.Error("InitResource - GetBdevs failed:", err.Error())
return
}
lvss, err := d.spdkclient.GetLvStores()
if err != nil {
log.Error("InitResource - GetLvStores failed:", err.Error())
return
}
for _, vg := range vgs {
found = false
for _, lvs := range *lvss {
if vg.Name == lvs.Name {
found = true
break
}
}
if !found {
for _, bdev := range *bdevs {
if bdev.GetFilename() == vg.Devices[0] {
found = true
break
}
}
bdevName := "bdev-aio" + strings.Replace(vg.Devices[0], "/", "_", -1)
if !found {
if _, err := d.spdkclient.CreateBdev(bdevName, vg.Devices[0]); err != nil {
log.Error("InitResource - CreateBdev failed:", err.Error())
return
}
}
if _, err := d.spdkclient.CreateLvstore(bdevName, vg.Name); err != nil {
log.Error("InitResource - CreateLvstore failed:", err.Error())
}
}
}
}
for _, mp := range mountpoints {
notMounted, err := d.K8sMounter.IsLikelyNotMountPoint(mp.Path)
if err != nil && strings.Contains(err.Error(), "no such file or directory") {
if err := os.MkdirAll(mp.Path, 0777); err != nil {
log.Errorf("mkdir error: %s", err.Error())
continue
}
}
if notMounted {
fsType := mp.FsType
if fsType == "" {
fsType = DefaultFS
}
if err := utils.Format(mp.Device, fsType); err != nil {
log.Errorf("format error: %s", err.Error())
continue
}
if err := d.K8sMounter.Mount(mp.Device, mp.Path, fsType, mp.Options); err != nil {
log.Errorf("mount error: %s", err.Error())
continue
}
}
}
}
func getReservedVGInfo(reservedAnno string) (infos map[string]ReservedVGInfo, err error) {
// step 0: var definition
infos = make(map[string]ReservedVGInfo)
reservedVGMap := map[string]string{}
// step 1: unmarshal
if err := json.Unmarshal([]byte(reservedAnno), &reservedVGMap); err != nil {
return nil, fmt.Errorf(
"failed to parse annotation value (%q) err=%v",
reservedAnno,
err)
}
// step 2: get reserved info from anno
for k, v := range reservedVGMap {
var percent float64
var size int64
var info ReservedVGInfo
if strings.HasSuffix(v, "%") {
// reservedPercent
v = strings.ReplaceAll(v, "%", "")
thr, err := strconv.ParseFloat(v, 64)
if err != nil {
return nil, fmt.Errorf("[getReservedVGInfo]parse float failed")
}
percent = thr / 100
info = ReservedVGInfo{
vgName: k,
reservedPercent: percent,
}
} else {
// reservedSize
size, err = units.RAMInBytes(v)
if err != nil {
return nil, fmt.Errorf("[getReservedVGInfo]get reserved size failed")
}
info = ReservedVGInfo{
vgName: k,
reservedSize: uint64(size),
}
}
infos[k] = info
}
return infos, nil
}
func FilterVGInfo(nls *localv1alpha1.NodeLocalStorage) []string {
var vgSlice []string
for _, vg := range nls.Status.NodeStorageInfo.VolumeGroups {
vgSlice = append(vgSlice, vg.Name)
}
return FilterInfo(vgSlice, nls.Spec.ListConfig.VGs.Include, nls.Spec.ListConfig.VGs.Exclude)
}
func FilterMPInfo(nls *localv1alpha1.NodeLocalStorage) []string {
var mpSlice []string
for _, mp := range nls.Status.NodeStorageInfo.MountPoints {
mpSlice = append(mpSlice, mp.Name)
}
return FilterInfo(mpSlice, nls.Spec.ListConfig.MountPoints.Include, nls.Spec.ListConfig.MountPoints.Exclude)
}
func FilterDeviceInfo(nls *localv1alpha1.NodeLocalStorage) []string {
var devSlice []string
for _, dev := range nls.Status.NodeStorageInfo.DeviceInfos {
devSlice = append(devSlice, dev.Name)
}
return FilterInfo(devSlice, nls.Spec.ListConfig.Devices.Include, nls.Spec.ListConfig.Devices.Exclude)
}
func FilterInfo(info []string, include []string, exclude []string) []string {
filterMap := make(map[string]string, len(info))
for _, inc := range include {
reg := regexp.MustCompile(inc)
for _, i := range info {
if reg.FindString(i) == i {
filterMap[i] = i
}
}
}
for _, exc := range exclude {
reg := regexp.MustCompile(exc)
for _, i := range info {
if reg.FindString(i) == i {
delete(filterMap, i)
}
}
}
var filterSlice []string
for vg := range filterMap {
filterSlice = append(filterSlice, vg)
}
return filterSlice
}