mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-11-03 15:25:19 +00:00
a6e523f2e7
This PR adds iSCSI initiatorname parameter to ISCSIVolumeSource to enable automatic configuration of initiator name per volume. This would allow for more fine grained configuration, and remove the need to configure the initiator name on the host by administrator. fixes: #47311
120 lines
3.2 KiB
Go
120 lines
3.2 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes Authors.
|
|
|
|
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 iscsi
|
|
|
|
import (
|
|
"os"
|
|
|
|
"github.com/golang/glog"
|
|
"k8s.io/kubernetes/pkg/util/mount"
|
|
"k8s.io/kubernetes/pkg/volume"
|
|
)
|
|
|
|
// Abstract interface to disk operations.
|
|
type diskManager interface {
|
|
MakeGlobalPDName(disk iscsiDisk) string
|
|
// Attaches the disk to the kubelet's host machine.
|
|
AttachDisk(b iscsiDiskMounter) error
|
|
// Detaches the disk from the kubelet's host machine.
|
|
DetachDisk(disk iscsiDiskUnmounter, mntPath string) error
|
|
}
|
|
|
|
// utility to mount a disk based filesystem
|
|
func diskSetUp(manager diskManager, b iscsiDiskMounter, volPath string, mounter mount.Interface, fsGroup *int64) error {
|
|
// TODO: handle failed mounts here.
|
|
notMnt, err := mounter.IsLikelyNotMountPoint(volPath)
|
|
|
|
if err != nil && !os.IsNotExist(err) {
|
|
glog.Errorf("cannot validate mountpoint: %s", volPath)
|
|
return err
|
|
}
|
|
if !notMnt {
|
|
return nil
|
|
}
|
|
if err := manager.AttachDisk(b); err != nil {
|
|
glog.Errorf("failed to attach disk")
|
|
return err
|
|
}
|
|
|
|
if err := os.MkdirAll(volPath, 0750); err != nil {
|
|
glog.Errorf("failed to mkdir:%s", volPath)
|
|
return err
|
|
}
|
|
// Perform a bind mount to the full path to allow duplicate mounts of the same disk.
|
|
options := []string{"bind"}
|
|
if b.readOnly {
|
|
options = append(options, "ro")
|
|
}
|
|
globalPDPath := manager.MakeGlobalPDName(*b.iscsiDisk)
|
|
mountOptions := volume.JoinMountOptions(b.mountOptions, options)
|
|
err = mounter.Mount(globalPDPath, volPath, "", mountOptions)
|
|
if err != nil {
|
|
glog.Errorf("failed to bind mount:%s", globalPDPath)
|
|
return err
|
|
}
|
|
|
|
if !b.readOnly {
|
|
volume.SetVolumeOwnership(&b, fsGroup)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// utility to tear down a disk based filesystem
|
|
func diskTearDown(manager diskManager, c iscsiDiskUnmounter, volPath string, mounter mount.Interface) error {
|
|
notMnt, err := mounter.IsLikelyNotMountPoint(volPath)
|
|
if err != nil {
|
|
glog.Errorf("cannot validate mountpoint %s", volPath)
|
|
return err
|
|
}
|
|
if notMnt {
|
|
return os.Remove(volPath)
|
|
}
|
|
|
|
refs, err := mount.GetMountRefs(mounter, volPath)
|
|
if err != nil {
|
|
glog.Errorf("failed to get reference count %s", volPath)
|
|
return err
|
|
}
|
|
if err := mounter.Unmount(volPath); err != nil {
|
|
glog.Errorf("failed to unmount %s", volPath)
|
|
return err
|
|
}
|
|
// If len(refs) is 1, then all bind mounts have been removed, and the
|
|
// remaining reference is the global mount. It is safe to detach.
|
|
if len(refs) == 1 {
|
|
mntPath := refs[0]
|
|
if err := manager.DetachDisk(c, mntPath); err != nil {
|
|
glog.Errorf("failed to detach disk from %s", mntPath)
|
|
return err
|
|
}
|
|
}
|
|
|
|
notMnt, mntErr := mounter.IsLikelyNotMountPoint(volPath)
|
|
if mntErr != nil {
|
|
glog.Errorf("IsLikelyNotMountPoint check failed: %v", mntErr)
|
|
return err
|
|
}
|
|
if notMnt {
|
|
if err := os.Remove(volPath); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
|
|
}
|