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Add support for expanding local volumes

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Fix path and stuff
This commit is contained in:
Hemant Kumar 2021-06-10 16:13:13 -04:00
parent 8eef6438e6
commit a0e8a98bcb
1 changed files with 43 additions and 0 deletions
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43
pkg/volume/local/local.go
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@ -57,6 +57,7 @@ type localVolumePlugin struct {
var _ volume.VolumePlugin = &localVolumePlugin{}
var _ volume.PersistentVolumePlugin = &localVolumePlugin{}
var _ volume.BlockVolumePlugin = &localVolumePlugin{}
var _ volume.NodeExpandableVolumePlugin = &localVolumePlugin{}
const (
localVolumePluginName = "kubernetes.io/local-volume"
@ -376,6 +377,48 @@ func (dm *deviceMounter) MountDevice(spec *volume.Spec, devicePath string, devic
}
}
func (plugin *localVolumePlugin) RequiresFSResize() bool {
return true
}
func (plugin *localVolumePlugin) NodeExpand(resizeOptions volume.NodeResizeOptions) (bool, error) {
fsVolume, err := util.CheckVolumeModeFilesystem(resizeOptions.VolumeSpec)
if err != nil {
return false, fmt.Errorf("error checking VolumeMode: %v", err)
}
if !fsVolume {
return true, nil
}
localDevicePath := resizeOptions.VolumeSpec.PersistentVolume.Spec.Local.Path
kvh, ok := plugin.host.(volume.KubeletVolumeHost)
if !ok {
return false, fmt.Errorf("plugin volume host does not implement KubeletVolumeHost interface")
}
fileType, err := kvh.GetHostUtil().GetFileType(localDevicePath)
if err != nil {
return false, err
}
switch fileType {
case hostutil.FileTypeBlockDev:
_, err = util.GenericResizeFS(plugin.host, plugin.GetPluginName(), localDevicePath, resizeOptions.DeviceMountPath)
if err != nil {
return false, err
}
return true, nil
case hostutil.FileTypeDirectory:
// if the given local volume path is of already filesystem directory, return directly because
// we do not want to prevent mount operation from succeeding.
klog.InfoS("expansion of directory based local volumes is NO-OP", "local-volume-path", localDevicePath)
return true, nil
default:
return false, fmt.Errorf("only directory and block device are supported")
}
}
func getVolumeSourceFSType(spec *volume.Spec) (string, error) {
if spec.PersistentVolume != nil &&
spec.PersistentVolume.Spec.Local != nil {