func (oe *operationExecutor) generateMountVolumeFunc(
waitForAttachTimeout time.Duration,
volumeToMount VolumeToMount,
actualStateOfWorld ActualStateOfWorldMounterUpdater) (func() error, error) {
// Get mounter plugin
volumePlugin, err :=
oe.volumePluginMgr.FindPluginBySpec(volumeToMount.VolumeSpec)
if err != nil || volumePlugin == nil {
return nil, fmt.Errorf(
"MountVolume.FindPluginBySpec failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
err)
}
volumeMounter, newMounterErr := volumePlugin.NewMounter(
volumeToMount.VolumeSpec,
volumeToMount.Pod,
volume.VolumeOptions{})
if newMounterErr != nil {
return nil, fmt.Errorf(
"MountVolume.NewMounter failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
newMounterErr)
}
// Get attacher, if possible
attachableVolumePlugin, _ :=
oe.volumePluginMgr.FindAttachablePluginBySpec(volumeToMount.VolumeSpec)
var volumeAttacher volume.Attacher
if attachableVolumePlugin != nil {
volumeAttacher, _ = attachableVolumePlugin.NewAttacher()
}
var fsGroup *int64
if volumeToMount.Pod.Spec.SecurityContext != nil &&
volumeToMount.Pod.Spec.SecurityContext.FSGroup != nil {
fsGroup = volumeToMount.Pod.Spec.SecurityContext.FSGroup
}
return func() error {
if volumeAttacher != nil {
// Wait for attachable volumes to finish attaching
glog.Infof(
"Entering MountVolume.WaitForAttach for volume %q (spec.Name: %q) pod %q (UID: %q) DevicePath: %q",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
volumeToMount.DevicePath)
devicePath, err := volumeAttacher.WaitForAttach(
volumeToMount.VolumeSpec, volumeToMount.DevicePath, waitForAttachTimeout)
if err != nil {
// On failure, return error. Caller will log and retry.
return fmt.Errorf(
"MountVolume.WaitForAttach failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
err)
}
glog.Infof(
"MountVolume.WaitForAttach succeeded for volume %q (spec.Name: %q) pod %q (UID: %q).",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID)
deviceMountPath, err :=
volumeAttacher.GetDeviceMountPath(volumeToMount.VolumeSpec)
if err != nil {
// On failure, return error. Caller will log and retry.
return fmt.Errorf(
"MountVolume.GetDeviceMountPath failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
err)
}
// Mount device to global mount path
err = volumeAttacher.MountDevice(
volumeToMount.VolumeSpec,
devicePath,
deviceMountPath)
if err != nil {
// On failure, return error. Caller will log and retry.
err := fmt.Errorf(
"MountVolume.MountDevice failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
err)
oe.recorder.Eventf(volumeToMount.Pod, v1.EventTypeWarning, kevents.FailedMountVolume, err.Error())
return err
}
glog.Infof(
"MountVolume.MountDevice succeeded for volume %q (spec.Name: %q) pod %q (UID: %q) device mount path %q",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
deviceMountPath)
// Update actual state of world to reflect volume is globally mounted
markDeviceMountedErr := actualStateOfWorld.MarkDeviceAsMounted(
volumeToMount.VolumeName)
if markDeviceMountedErr != nil {
// On failure, return error. Caller will log and retry.
return fmt.Errorf(
"MountVolume.MarkDeviceAsMounted failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
markDeviceMountedErr)
}
}
if oe.checkNodeCapabilitiesBeforeMount {
if canMountErr := volumeMounter.CanMount(); canMountErr != nil {
errMsg := fmt.Sprintf("Unable to mount volume %v (spec.Name: %v) on pod %v (UID: %v). Verify that your node machine has the required components before attempting to mount this volume type. %s", volumeToMount.VolumeName, volumeToMount.VolumeSpec.Name(), volumeToMount.Pod.Name, volumeToMount.Pod.UID, canMountErr.Error())
oe.recorder.Eventf(volumeToMount.Pod, v1.EventTypeWarning, kevents.FailedMountVolume, errMsg)
glog.Errorf(errMsg)
return fmt.Errorf(errMsg)
}
}
// Execute mount
mountErr := volumeMounter.SetUp(fsGroup)
if mountErr != nil {
// On failure, return error. Caller will log and retry.
err := fmt.Errorf(
"MountVolume.SetUp failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
mountErr)
oe.recorder.Eventf(volumeToMount.Pod, v1.EventTypeWarning, kevents.FailedMountVolume, err.Error())
return err
}
glog.Infof(
"MountVolume.SetUp succeeded for volume %q (spec.Name: %q) pod %q (UID: %q).",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID)
// Update actual state of world
markVolMountedErr := actualStateOfWorld.MarkVolumeAsMounted(
volumeToMount.PodName,
volumeToMount.Pod.UID,
volumeToMount.VolumeName,
volumeMounter,
volumeToMount.OuterVolumeSpecName,
volumeToMount.VolumeGidValue)
if markVolMountedErr != nil {
// On failure, return error. Caller will log and retry.
return fmt.Errorf(
"MountVolume.MarkVolumeAsMounted failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
markVolMountedErr)
}
return nil
}, nil
}
func (oe *operationExecutor) generateMountVolumeFunc(
waitForAttachTimeout time.Duration,
volumeToMount VolumeToMount,
actualStateOfWorld ActualStateOfWorldMounterUpdater) (func() error, error) {
// Get mounter plugin
volumePlugin, err :=
oe.volumePluginMgr.FindPluginBySpec(volumeToMount.VolumeSpec)
if err != nil || volumePlugin == nil {
return nil, fmt.Errorf(
"MountVolume.FindPluginBySpec failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
err)
}
volumeMounter, newMounterErr := volumePlugin.NewMounter(
volumeToMount.VolumeSpec,
volumeToMount.Pod,
volume.VolumeOptions{})
if newMounterErr != nil {
return nil, fmt.Errorf(
"MountVolume.NewMounter failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
newMounterErr)
}
// Get attacher, if possible
attachableVolumePlugin, _ :=
oe.volumePluginMgr.FindAttachablePluginBySpec(volumeToMount.VolumeSpec)
var volumeAttacher volume.Attacher
if attachableVolumePlugin != nil {
volumeAttacher, _ = attachableVolumePlugin.NewAttacher()
}
var fsGroup *int64
if volumeToMount.Pod.Spec.SecurityContext != nil &&
volumeToMount.Pod.Spec.SecurityContext.FSGroup != nil {
fsGroup = volumeToMount.Pod.Spec.SecurityContext.FSGroup
}
return func() error {
if volumeAttacher != nil {
// Wait for attachable volumes to finish attaching
glog.Infof(
"Entering MountVolume.WaitForAttach for volume %q (spec.Name: %q) pod %q (UID: %q) DevicePath: %q",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
volumeToMount.DevicePath)
devicePath, err := volumeAttacher.WaitForAttach(
volumeToMount.VolumeSpec, volumeToMount.DevicePath, waitForAttachTimeout)
if err != nil {
// On failure, return error. Caller will log and retry.
return fmt.Errorf(
"MountVolume.WaitForAttach failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
err)
}
glog.Infof(
"MountVolume.WaitForAttach succeeded for volume %q (spec.Name: %q) pod %q (UID: %q).",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID)
deviceMountPath, err :=
volumeAttacher.GetDeviceMountPath(volumeToMount.VolumeSpec)
if err != nil {
// On failure, return error. Caller will log and retry.
return fmt.Errorf(
"MountVolume.GetDeviceMountPath failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
err)
}
// Mount device to global mount path
err = volumeAttacher.MountDevice(
volumeToMount.VolumeSpec,
devicePath,
deviceMountPath)
if err != nil {
// On failure, return error. Caller will log and retry.
return fmt.Errorf(
"MountVolume.MountDevice failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
err)
}
glog.Infof(
"MountVolume.MountDevice succeeded for volume %q (spec.Name: %q) pod %q (UID: %q).",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID)
// Update actual state of world to reflect volume is globally mounted
markDeviceMountedErr := actualStateOfWorld.MarkDeviceAsMounted(
volumeToMount.VolumeName)
if markDeviceMountedErr != nil {
// On failure, return error. Caller will log and retry.
return fmt.Errorf(
"MountVolume.MarkDeviceAsMounted failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
markDeviceMountedErr)
}
}
// Execute mount
mountErr := volumeMounter.SetUp(fsGroup)
if mountErr != nil {
// On failure, return error. Caller will log and retry.
return fmt.Errorf(
"MountVolume.SetUp failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
mountErr)
}
glog.Infof(
"MountVolume.SetUp succeeded for volume %q (spec.Name: %q) pod %q (UID: %q).",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID)
// Update actual state of world
markVolMountedErr := actualStateOfWorld.MarkVolumeAsMounted(
volumeToMount.PodName,
volumeToMount.Pod.UID,
volumeToMount.VolumeName,
volumeMounter,
volumeToMount.OuterVolumeSpecName,
volumeToMount.VolumeGidValue)
if markVolMountedErr != nil {
// On failure, return error. Caller will log and retry.
return fmt.Errorf(
"MountVolume.MarkVolumeAsMounted failed for volume %q (spec.Name: %q) pod %q (UID: %q) with: %v",
volumeToMount.VolumeName,
volumeToMount.VolumeSpec.Name(),
volumeToMount.PodName,
volumeToMount.Pod.UID,
markVolMountedErr)
}
return nil
}, nil
}