feat: add real size to backing image

ref: longhorn/longhonr 8757

Signed-off-by: Jack Lin <jack.lin@suse.com>

controller/backing_image_controller.go

@@ -840,6 +840,21 @@ func (bic *BackingImageController) syncBackingImageFileInfo(bi *longhorn.Backing
 				}
 			}
 		}
+		if info.RealSize > 0 {
+			if bi.Status.RealSize == 0 {
+				bi.Status.RealSize = info.RealSize
+				bic.eventRecorder.Eventf(bi, corev1.EventTypeNormal, constant.EventReasonUpdate, "Set realSize to %v", bi.Status.RealSize)
+			}
+			if bi.Status.RealSize != info.RealSize {
+				if bi.Status.DiskFileStatusMap[bim.Spec.DiskUUID].State != longhorn.BackingImageStateFailed {
+					msg := fmt.Sprintf("found mismatching realSize %v reported by backing image manager %v in disk %v, the realSoze recorded in status is %v",
+						info.RealSize, bim.Name, bim.Spec.DiskUUID, bi.Status.RealSize)
+					log.Error(msg)
+					bi.Status.DiskFileStatusMap[bim.Spec.DiskUUID].State = longhorn.BackingImageStateFailed
+					bi.Status.DiskFileStatusMap[bim.Spec.DiskUUID].Message = msg
+				}
+			}
+		}
 	}
 
 	for diskUUID := range bi.Status.DiskFileStatusMap {

controller/node_controller.go

@@ -806,6 +806,10 @@ func (nc *NodeController) updateDiskStatusSchedulableCondition(node *longhorn.No
 	if err != nil {
 		return err
 	}
+	backingImages, err := nc.ds.ListBackingImagesRO()
+	if err != nil {
+		return err
+	}
 
 	for diskName, disk := range node.Spec.Disks {
 		diskStatus := diskStatusMap[diskName]
@@ -843,6 +847,7 @@ func (nc *NodeController) updateDiskStatusSchedulableCondition(node *longhorn.No
 				return err
 			}
 			scheduledReplica := map[string]int64{}
+			scheduledBackingImage := map[string]int64{}
 			storageScheduled := int64(0)
 			for _, replica := range replicas {
 				if replica.Spec.NodeID != node.Name || replica.Spec.DiskPath != disk.Path {
@@ -857,8 +862,17 @@ func (nc *NodeController) updateDiskStatusSchedulableCondition(node *longhorn.No
 				storageScheduled += replica.Spec.VolumeSize
 				scheduledReplica[replica.Name] = replica.Spec.VolumeSize
 			}
+
+			for _, backingImage := range backingImages {
+				if _, exists := backingImage.Spec.DiskFileSpecMap[diskStatus.DiskUUID]; exists {
+					storageScheduled += backingImage.Status.RealSize
+					scheduledBackingImage[backingImage.Name] = backingImage.Status.RealSize
+				}
+			}
+
 			diskStatus.StorageScheduled = storageScheduled
 			diskStatus.ScheduledReplica = scheduledReplica
+			diskStatus.ScheduledBackingImage = scheduledBackingImage
 			// check disk pressure
 			info, err := nc.scheduler.GetDiskSchedulingInfo(disk, diskStatus)
 			if err != nil {

engineapi/backing_image_manager.go

@@ -58,6 +58,7 @@ func (c *BackingImageManagerClient) parseBackingImageFileInfo(bi *bimapi.Backing
 		UUID:        bi.UUID,
 		Size:        bi.Size,
 		VirtualSize: bi.VirtualSize,
+		RealSize:    bi.RealSize,
 
 		State:                longhorn.BackingImageState(bi.Status.State),
 		CurrentChecksum:      bi.Status.CurrentChecksum,

go.mod

@@ -60,7 +60,7 @@ require (
 	github.com/gorilla/websocket v1.5.3
 	github.com/jinzhu/copier v0.4.0
 	github.com/kubernetes-csi/csi-lib-utils v0.19.0
-	github.com/longhorn/backing-image-manager v1.8.0-dev-20240922
+	github.com/longhorn/backing-image-manager v1.8.0-dev-20240922.0.20240923074219-9aff32760277
 	github.com/longhorn/backupstore v0.0.0-20240922062439-e33cb1230db9
 	github.com/longhorn/go-common-libs v0.0.0-20240921050101-797b589b669d
 	github.com/longhorn/go-iscsi-helper v0.0.0-20240922062410-c17a624e50c1

go.sum

@@ -157,8 +157,8 @@ github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de h1:9TO3cAIGXtEhnIaL+V+BEER86oLrvS+kWobKpbJuye0=
 github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de/go.mod h1:zAbeS9B/r2mtpb6U+EI2rYA5OAXxsYw6wTamcNW+zcE=
-github.com/longhorn/backing-image-manager v1.8.0-dev-20240922 h1:Ikx3UIgHD90DHr1CBfu9IUTdyt+NzM313IHau5DMzJQ=
-github.com/longhorn/backing-image-manager v1.8.0-dev-20240922/go.mod h1:raIdWG9r1P0YlnVRCqsCpavnEHd3TsqREQE2skKNQEA=
+github.com/longhorn/backing-image-manager v1.8.0-dev-20240922.0.20240923074219-9aff32760277 h1:b0IhPPH+F2ZOC701kzLDExSAAKN9FLVTHikhGaKYJWo=
+github.com/longhorn/backing-image-manager v1.8.0-dev-20240922.0.20240923074219-9aff32760277/go.mod h1:rLnxTIs4uEY0FUkHalr//1IKePxlqKXBhv+NRQ968yg=
 github.com/longhorn/backupstore v0.0.0-20240922062439-e33cb1230db9 h1:ua4PCfArX2TyPVnldF+m7I9c2eGi+TcP8pcPPx2wp0w=
 github.com/longhorn/backupstore v0.0.0-20240922062439-e33cb1230db9/go.mod h1:UTONYTgRryrw0RgDZbxwU+r1s4PeKQ+v0Z8Pb6jUWn4=
 github.com/longhorn/go-common-libs v0.0.0-20240921050101-797b589b669d h1:MXJlzyXLptspJEc1UC7ee2eBIYksTl0RT2bXUAXU+8Q=

k8s/crds.yaml

@@ -343,6 +343,9 @@ spec:
                       type: string
                     progress:
                       type: integer
+                    realSize:
+                      format: int64
+                      type: integer
                     senderManagerAddress:
                       type: string
                     sendingReference:
@@ -560,6 +563,11 @@ spec:
                 type: object
               ownerID:
                 type: string
+              realSize:
+                description: Real size of image, which may be smaller than the size 
+                  when the file is a sparse file. Will be zero until known (e.g. while a backing image is uploading)
+                format: int64
+                type: integer
               size:
                 format: int64
                 type: integer
@@ -2507,6 +2515,12 @@ spec:
                       type: string
                     instanceManagerName:
                       type: string
+                    scheduledBackingImage:
+                      additionalProperties:
+                        format: int64
+                        type: integer
+                      nullable: true
+                      type: object
                     scheduledReplica:
                       additionalProperties:
                         format: int64

k8s/pkg/apis/longhorn/v1beta2/backingimage.go

@@ -80,6 +80,9 @@ type BackingImageStatus struct {
 	// Virtual size of image, which may be larger than physical size. Will be zero until known (e.g. while a backing image is uploading)
 	// +optional
 	VirtualSize int64 `json:"virtualSize"`
+	// Real size of image, which may be smaller than the size when the file is a sparse file. Will be zero until known (e.g. while a backing image is uploading)
+	// +optional
+	RealSize int64 `json:"realSize"`
 	// +optional
 	Checksum string `json:"checksum"`
 	// +optional

k8s/pkg/apis/longhorn/v1beta2/backingimagemanager.go

@@ -22,6 +22,8 @@ type BackingImageFileInfo struct {
 	// +optional
 	VirtualSize int64 `json:"virtualSize"`
 	// +optional
+	RealSize int64 `json:"realSize"`
+	// +optional
 	State BackingImageState `json:"state"`
 	// +optional
 	CurrentChecksum string `json:"currentChecksum"`

k8s/pkg/apis/longhorn/v1beta2/node.go

@@ -111,6 +111,9 @@ type DiskStatus struct {
 	// +nullable
 	ScheduledReplica map[string]int64 `json:"scheduledReplica"`
 	// +optional
+	// +nullable
+	ScheduledBackingImage map[string]int64 `json:"scheduledBackingImage"`
+	// +optional
 	DiskUUID string `json:"diskUUID"`
 	// +optional
 	DiskName string `json:"diskName"`