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Signed-off-by: Suleyman Akbas <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| package vgmanager | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
| "github.com/openshift/lvm-operator/pkg/wipefs" | ||
|
|
||
| lvmv1alpha1 "github.com/openshift/lvm-operator/api/v1alpha1" | ||
| "github.com/openshift/lvm-operator/pkg/lsblk" | ||
| "github.com/openshift/lvm-operator/pkg/lvm" | ||
|
|
||
| "sigs.k8s.io/controller-runtime/pkg/log" | ||
| ) | ||
|
|
||
| func (r *VGReconciler) wipeDevicesIfNecessary(ctx context.Context, volumeGroup *lvmv1alpha1.LVMVolumeGroup, vgs []lvm.VolumeGroup, blockDevices []lsblk.BlockDevice) (bool, error) { | ||
| if volumeGroup.Spec.DeviceSelector == nil || !volumeGroup.Spec.DeviceSelector.ForceWipeDevicesAndDestroyAllData { | ||
| return false, nil | ||
| } | ||
|
|
||
| allPaths := append(volumeGroup.Spec.DeviceSelector.Paths, volumeGroup.Spec.DeviceSelector.OptionalPaths...) | ||
| wiped := false | ||
| for _, path := range allPaths { | ||
| if isDeviceAlreadyPartOfVG(vgs, path, volumeGroup) { | ||
| continue | ||
| } | ||
| deviceWiped, err := r.wipeDevice(ctx, path, blockDevices) | ||
| if err != nil { | ||
| return false, fmt.Errorf("failed to wipe device %s: %w", path, err) | ||
| } | ||
| if deviceWiped { | ||
| wiped = true | ||
| } | ||
| } | ||
|
|
||
| return wiped, nil | ||
| } | ||
|
|
||
| func (r *VGReconciler) wipeDevice(ctx context.Context, deviceName string, blockDevices []lsblk.BlockDevice) (bool, error) { | ||
| logger := log.FromContext(ctx).WithValues("deviceName", deviceName) | ||
|
|
||
| wiped := false | ||
| for _, device := range blockDevices { | ||
| if device.KName == deviceName { | ||
| if err := r.Wipefs.Wipe(device.KName); err != nil { | ||
| return false, err | ||
| } | ||
| wiped = true | ||
| logger.Info("device wiped successfully") | ||
| for _, child := range device.Children { | ||
| // If the device was used as a Physical Volume before, wipefs does not remove the child LVs. | ||
| // So, a device-mapper reference removal is necessary to further remove the child LV references. | ||
| r.removeMapperReference(ctx, child) | ||
| } | ||
| } else if device.HasChildren() { | ||
| childWiped, err := r.wipeDevice(ctx, deviceName, device.Children) | ||
| if err != nil { | ||
| return false, err | ||
| } | ||
| if childWiped { | ||
| wiped = true | ||
| } | ||
| } | ||
| } | ||
| return wiped, nil | ||
| } | ||
|
|
||
| // removeMapperReference remove the device-mapper reference of the device starting from the most inner child | ||
| func (r *VGReconciler) removeMapperReference(ctx context.Context, device lsblk.BlockDevice) { | ||
| logger := log.FromContext(ctx).WithValues("deviceName", device.KName) | ||
| if device.HasChildren() { | ||
| for _, child := range device.Children { | ||
| r.removeMapperReference(ctx, child) | ||
| } | ||
| } | ||
| if err := r.Wipefs.RemoveMapperReference(device.KName); err != nil { | ||
| if errors.Is(err, wipefs.ErrReferenceNotFound) { | ||
| logger.Info("skipping the removal of device-mapper reference as the reference does not exist", "childName", device.KName) | ||
| } else { | ||
| logger.Info("failed to remove device-mapper reference", "childName", device.KName, "error", err) | ||
| } | ||
| } else { | ||
| logger.Info("device-mapper reference removed successfully", "childName", device.KName) | ||
| } | ||
| } |
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