-
Notifications
You must be signed in to change notification settings - Fork 1
/
aws_util.go
150 lines (135 loc) · 4.16 KB
/
aws_util.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
/*
Copyright 2014 The Kubernetes Authors 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.
*/
package aws_ebs
import (
"errors"
"os"
"time"
"github.com/golang/glog"
aws_cloud "k8s.io/kubernetes/pkg/cloudprovider/providers/aws"
"k8s.io/kubernetes/pkg/volume"
)
type AWSDiskUtil struct{}
// Attaches a disk specified by a volume.AWSElasticBlockStore to the current kubelet.
// Mounts the disk to it's global path.
func (util *AWSDiskUtil) AttachAndMountDisk(b *awsElasticBlockStoreBuilder, globalPDPath string) error {
volumes, err := b.getVolumeProvider()
if err != nil {
return err
}
devicePath, err := volumes.AttachDisk("", b.volumeID, b.readOnly)
if err != nil {
return err
}
if b.partition != "" {
devicePath = devicePath + b.partition
}
//TODO(jonesdl) There should probably be better method than busy-waiting here.
numTries := 0
for {
_, err := os.Stat(devicePath)
if err == nil {
break
}
if err != nil && !os.IsNotExist(err) {
return err
}
numTries++
if numTries == 10 {
return errors.New("Could not attach disk: Timeout after 10s (" + devicePath + ")")
}
time.Sleep(time.Second)
}
// Only mount the PD globally once.
notMnt, err := b.mounter.IsLikelyNotMountPoint(globalPDPath)
if err != nil {
if os.IsNotExist(err) {
if err := os.MkdirAll(globalPDPath, 0750); err != nil {
return err
}
notMnt = true
} else {
return err
}
}
options := []string{}
if b.readOnly {
options = append(options, "ro")
}
if notMnt {
err = b.diskMounter.FormatAndMount(devicePath, globalPDPath, b.fsType, options)
if err != nil {
os.Remove(globalPDPath)
return err
}
}
return nil
}
// Unmounts the device and detaches the disk from the kubelet's host machine.
func (util *AWSDiskUtil) DetachDisk(c *awsElasticBlockStoreCleaner) error {
// Unmount the global PD mount, which should be the only one.
globalPDPath := makeGlobalPDPath(c.plugin.host, c.volumeID)
if err := c.mounter.Unmount(globalPDPath); err != nil {
glog.V(2).Info("Error unmount dir ", globalPDPath, ": ", err)
return err
}
if err := os.Remove(globalPDPath); err != nil {
glog.V(2).Info("Error removing dir ", globalPDPath, ": ", err)
return err
}
// Detach the disk
volumes, err := c.getVolumeProvider()
if err != nil {
glog.V(2).Info("Error getting volume provider for volumeID ", c.volumeID, ": ", err)
return err
}
if err := volumes.DetachDisk("", c.volumeID); err != nil {
glog.V(2).Info("Error detaching disk ", c.volumeID, ": ", err)
return err
}
return nil
}
func (util *AWSDiskUtil) DeleteVolume(d *awsElasticBlockStoreDeleter) error {
volumes, err := d.getVolumeProvider()
if err != nil {
glog.V(2).Info("Error getting volume provider: ", err)
return err
}
if err := volumes.DeleteVolume(d.volumeID); err != nil {
glog.V(2).Infof("Error deleting AWS EBS volume %s: %v", d.volumeID, err)
return err
}
glog.V(2).Infof("Successfully deleted AWS EBS volume %s", d.volumeID)
return nil
}
func (util *AWSDiskUtil) CreateVolume(c *awsElasticBlockStoreProvisioner) (volumeID string, volumeSizeGB int, err error) {
volumes, err := c.getVolumeProvider()
if err != nil {
glog.V(2).Info("Error getting volume provider: ", err)
return "", 0, err
}
requestBytes := c.options.Capacity.Value()
// AWS works with gigabytes, convert to GiB with rounding up
requestGB := int(volume.RoundUpSize(requestBytes, 1024*1024*1024))
volSpec := &aws_cloud.VolumeOptions{
CapacityGB: requestGB,
Tags: c.options.CloudTags,
}
name, err := volumes.CreateVolume(volSpec)
if err != nil {
glog.V(2).Infof("Error creating AWS EBS volume: %v", err)
return "", 0, err
}
glog.V(2).Infof("Successfully created AWS EBS volume %s", name)
return name, requestGB, nil
}