-
Notifications
You must be signed in to change notification settings - Fork 0
/
drain.go
64 lines (51 loc) · 1.68 KB
/
drain.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
package s3driver
import (
"code.cloudfoundry.org/dockerdriver"
"code.cloudfoundry.org/lager"
"regexp"
)
func (d *S3Driver) Drain(env dockerdriver.Env) error {
logger := env.Logger().Session("check-mounts")
logger.Info("start")
defer logger.Info("end")
// flush any volumes that are still in our map
for key, mount := range d.volumes {
if mount.Mountpoint != "" && mount.MountCount > 0 {
err := d.unmount(logger, mount.Name, mount.Mountpoint, mount.Name)
if err != nil {
logger.Error("drain-unmount-failed", err, lager.Data{"mount-name": mount.Name, "mount-point": mount.Mountpoint})
}
}
delete(d.volumes, key)
}
d.Purge(env, d.mountPathRoot)
d.removeState(env)
return nil
}
func (d *S3Driver) Purge(env dockerdriver.Env, path string) {
logger := env.Logger().Session("purge")
logger.Info("purge-start")
defer logger.Info("purge-end")
mountPattern, err := regexp.Compile("^" + path + ".*$")
if err != nil {
logger.Error("unable-to-list-mounts", err)
return
}
mounts, err := d.mountChecker.List(mountPattern)
if err != nil {
logger.Error("check-proc-mounts-failed", err, lager.Data{"path": path})
return
}
logger.Info("mount-directory-list", lager.Data{"mounts": mounts})
for _, mountDir := range mounts {
_, err = d.invoker.Invoke(env, "umount", []string{"-l", "-f", mountDir})
if err != nil {
logger.Error("warning-umount-intermediate-failed", err)
}
logger.Info("unmount-successful", lager.Data{"path": mountDir})
if err := d.os.Remove(mountDir); err != nil {
logger.Error("purge-cannot-remove-directory", err, lager.Data{"name": mountDir, "path": path})
}
logger.Info("remove-directory-successful", lager.Data{"path": mountDir})
}
}