diff --git a/api/model.go b/api/model.go
index 05fc9f510c..96f2842049 100644
--- a/api/model.go
+++ b/api/model.go
@@ -140,6 +140,7 @@ type BackupVolume struct {
 	BackingImageName     string            `json:"backingImageName"`
 	BackingImageChecksum string            `json:"backingImageChecksum"`
 	StorageClassName     string            `json:"storageClassName"`
+	BackupCount          string            `json:"backupCount"`
 }
 
 type Backup struct {
@@ -1742,6 +1743,7 @@ func toBackupVolumeResource(bv *longhorn.BackupVolume, apiContext *api.ApiContex
 		BackingImageName:     bv.Status.BackingImageName,
 		BackingImageChecksum: bv.Status.BackingImageChecksum,
 		StorageClassName:     bv.Status.StorageClassName,
+		BackupCount:          bv.Status.BackupCount,
 	}
 	b.Actions = map[string]string{
 		"backupList":   apiContext.UrlBuilder.ActionLink(b.Resource, "backupList"),
diff --git a/app/recurring_job.go b/app/recurring_job.go
index 6070a5598b..4366f5b693 100644
--- a/app/recurring_job.go
+++ b/app/recurring_job.go
@@ -15,6 +15,7 @@ import (
 	"github.com/urfave/cli"
 	"golang.org/x/sync/errgroup"
 
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/record"
@@ -28,6 +29,7 @@ import (
 	"github.com/longhorn/longhorn-manager/types"
 	"github.com/longhorn/longhorn-manager/util"
 
+	btypes "github.com/longhorn/backupstore/types"
 	longhornclient "github.com/longhorn/longhorn-manager/client"
 	longhorn "github.com/longhorn/longhorn-manager/k8s/pkg/apis/longhorn/v1beta2"
 	lhclientset "github.com/longhorn/longhorn-manager/k8s/pkg/client/clientset/versioned"
@@ -611,6 +613,32 @@ func (job *Job) doRecurringBackup() (err error) {
 		return err
 	}
 
+	if intervalStr, exists := job.labels[types.GetLonghornLabelKey(btypes.LonghornBackupOptionFullBackupInterval)]; exists {
+		interval, err := strconv.Atoi(intervalStr)
+		if err != nil {
+			return errors.Wrapf(err, "interval %v is not number", intervalStr)
+		}
+
+		backupVolume, err := job.api.BackupVolume.ById(job.volumeName)
+		if err != nil {
+			if !apierrors.IsNotFound(err) {
+				return errors.Wrapf(err, "failed to get backup volume %v", job.volumeName)
+			}
+		}
+
+		backupCount := 0
+		if backupVolume != nil && backupVolume.BackupCount != "" {
+			backupCount, err = strconv.Atoi(backupVolume.BackupCount)
+			if err != nil {
+				return errors.Wrapf(err, "backup count %v is not number", backupVolume.BackupCount)
+			}
+		}
+
+		if backupCount%interval == 0 {
+			job.labels[types.GetLonghornLabelKey(btypes.LonghornBackupOptionBackupMode)] = btypes.LonghornBackupModeFull
+		}
+	}
+
 	if _, err := job.api.Volume.ActionSnapshotBackup(volume, &longhornclient.SnapshotInput{
 		Labels: job.labels,
 		Name:   job.snapshotName,
diff --git a/client/generated_backup_volume.go b/client/generated_backup_volume.go
index b1936e1988..5e89950989 100644
--- a/client/generated_backup_volume.go
+++ b/client/generated_backup_volume.go
@@ -28,6 +28,8 @@ type BackupVolume struct {
 	Size string `json:"size,omitempty" yaml:"size,omitempty"`
 
 	StorageClassName string `json:"storageClassName,omitempty" yaml:"storage_class_name,omitempty"`
+
+	BackupCount string `json:"backupCount,omitempty" yaml:"backup_count,omitempty"`
 }
 
 type BackupVolumeCollection struct {
diff --git a/controller/backup_volume_controller.go b/controller/backup_volume_controller.go
index f018d7d477..5d7cc518a9 100644
--- a/controller/backup_volume_controller.go
+++ b/controller/backup_volume_controller.go
@@ -383,6 +383,8 @@ func (bvc *BackupVolumeController) reconcile(backupVolumeName string) (err error
 		return nil
 	}
 
+	logrus.Infof("[DEBUG]: backupVolumeInfo: %v", backupVolumeInfo)
+
 	// Update the Backup CR spec.syncRequestAt to request the
 	// backup_controller to reconcile the Backup CR if the last backup changed
 	if backupVolume.Status.LastBackupName != backupVolumeInfo.LastBackupName {
@@ -408,6 +410,7 @@ func (bvc *BackupVolumeController) reconcile(backupVolumeName string) (err error
 	backupVolume.Status.BackingImageChecksum = backupVolumeInfo.BackingImageChecksum
 	backupVolume.Status.StorageClassName = backupVolumeInfo.StorageClassName
 	backupVolume.Status.LastSyncedAt = syncTime
+	backupVolume.Status.BackupCount = backupVolumeInfo.BackupCount
 	return nil
 }
 
diff --git a/engineapi/backups.go b/engineapi/backups.go
index 9bece398af..66b684225d 100644
--- a/engineapi/backups.go
+++ b/engineapi/backups.go
@@ -232,6 +232,7 @@ func (btc *BackupTargetClient) BackupVolumeDelete(destURL, volumeName string, cr
 // parseBackupVolumeConfig parses a backup volume config
 func parseBackupVolumeConfig(output string) (*BackupVolume, error) {
 	backupVolume := new(BackupVolume)
+	logrus.Infof("[DEBUG] parseBackupVolumeConfig output: %v", output)
 	if err := json.Unmarshal([]byte(output), backupVolume); err != nil {
 		return nil, errors.Wrapf(err, "error parsing one backup volume config: \n%s", output)
 	}
diff --git a/engineapi/types.go b/engineapi/types.go
index 63d6be8a4f..e095469441 100644
--- a/engineapi/types.go
+++ b/engineapi/types.go
@@ -162,6 +162,7 @@ type BackupVolume struct {
 	BackingImageName     string             `json:"backingImageName"`
 	BackingImageChecksum string             `json:"backingImageChecksum"`
 	StorageClassName     string             `json:"storageClassName"`
+	BackupCount          string             `json:"backupCount"`
 }
 
 type Backup struct {
diff --git a/go.mod b/go.mod
index b03bdf895f..11f5499eae 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,7 @@ module github.com/longhorn/longhorn-manager
 go 1.21
 
 replace (
+	github.com/longhorn/backupstore v0.0.0-20240219094812-3a87ee02df77 => github.com/ChanYiLin/backupstore v0.0.0-20240322024320-ab6fa5ee775f
 	k8s.io/api => k8s.io/api v0.28.5
 	k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.28.5
 	k8s.io/apimachinery => k8s.io/apimachinery v0.28.5
diff --git a/go.sum b/go.sum
index e0e7ece68e..2bcaea8f78 100644
--- a/go.sum
+++ b/go.sum
@@ -605,6 +605,8 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/BurntSushi/toml v0.4.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/ChanYiLin/backupstore v0.0.0-20240322024320-ab6fa5ee775f h1:H3+X1DZVKbxMIqeFQsnVGznAjOHJSEAvFSW8ZdNjfqM=
+github.com/ChanYiLin/backupstore v0.0.0-20240322024320-ab6fa5ee775f/go.mod h1:4cbJWtlrD2cGTQxQLtdlPTYopiJiusXH7CpOBrn/s3k=
 github.com/JohnCGriffin/overflow v0.0.0-20211019200055-46fa312c352c/go.mod h1:X0CRv0ky0k6m906ixxpzmDRLvX58TFUKS2eePweuyxk=
 github.com/Microsoft/go-winio v0.6.1 h1:9/kr64B9VUZrLm5YYwbGtUJnMgqWVOdUAXu6Migciow=
 github.com/Microsoft/go-winio v0.6.1/go.mod h1:LRdKpFKfdobln8UmuiYcKPot9D2v6svN5+sAH+4kjUM=
@@ -1045,14 +1047,10 @@ github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de h1:9TO3cAIGXtEhn
 github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de/go.mod h1:zAbeS9B/r2mtpb6U+EI2rYA5OAXxsYw6wTamcNW+zcE=
 github.com/longhorn/backing-image-manager v1.6.0 h1:Jmlc8+W63l0VZoVhPwNLniAk+eBC4CNaadoqpqA51KE=
 github.com/longhorn/backing-image-manager v1.6.0/go.mod h1:IH0mgbK+Dr13xkY+LhDaufyd9YIpiKqYo1AeRLFYGrk=
-github.com/longhorn/backupstore v0.0.0-20240219094812-3a87ee02df77 h1:iJRq59kA22f9HIjFtY/lz5rKCorZJrrYXju70XoWdmE=
-github.com/longhorn/backupstore v0.0.0-20240219094812-3a87ee02df77/go.mod h1:4cbJWtlrD2cGTQxQLtdlPTYopiJiusXH7CpOBrn/s3k=
 github.com/longhorn/go-common-libs v0.0.0-20240307063052-6e77996eda29 h1:tyzIDCMjQGQzhqAtdJaeEMAaNUZJD/sHERXp+tYc+ms=
 github.com/longhorn/go-common-libs v0.0.0-20240307063052-6e77996eda29/go.mod h1:ePLGb2r/PJBUIVoVhLOt4bLOeu0S72ZB+fWDWwC8H28=
 github.com/longhorn/go-iscsi-helper v0.0.0-20240308033847-bc3aab599425 h1:koSD52H0VkzJAh3OIZCdgQ9mqoRXklkeuhqmuwQ1WzU=
 github.com/longhorn/go-iscsi-helper v0.0.0-20240308033847-bc3aab599425/go.mod h1:2aM6KBix3Khd56I4rihOBOOPOm0/YvYMjtr1KNclQsI=
-github.com/longhorn/go-spdk-helper v0.0.0-20240301101140-6eb6aa5fc09d h1:vajqcFlGHmyQcqhBbGMRo33GNcrKMgNY8ca87rGuKnU=
-github.com/longhorn/go-spdk-helper v0.0.0-20240301101140-6eb6aa5fc09d/go.mod h1:Zv0UpwuqZpijy5/vSW2PvR8zVPBX8CJPF3XeZAuc4Ek=
 github.com/longhorn/go-spdk-helper v0.0.0-20240308030201-9b252d6f7250 h1:bc9BtfvSuXvmztYiBCebvPWPxakbiCWBvydbeqat+Ek=
 github.com/longhorn/go-spdk-helper v0.0.0-20240308030201-9b252d6f7250/go.mod h1:re2QHb6FUU9G/CL3AnXDbzFjLNPwmweBvnTfeVpkZ1E=
 github.com/longhorn/longhorn-engine v1.6.0 h1:6CH2vvwCgFBIGW4TegcI79CL1Ego1nvLZIC3ioRjjdM=
@@ -2231,8 +2229,6 @@ k8s.io/mount-utils v0.28.5/go.mod h1:ceMAZ+Nzlk8zOwN205YXXGJRGmf1o0/XIwsKnG44p0I
 k8s.io/utils v0.0.0-20210802155522-efc7438f0176/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
 k8s.io/utils v0.0.0-20210819203725-bdf08cb9a70a/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
 k8s.io/utils v0.0.0-20230406110748-d93618cff8a2/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
-k8s.io/utils v0.0.0-20240102154912-e7106e64919e h1:eQ/4ljkx21sObifjzXwlPKpdGLrCfRziVtos3ofG/sQ=
-k8s.io/utils v0.0.0-20240102154912-e7106e64919e/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
 k8s.io/utils v0.0.0-20240310230437-4693a0247e57 h1:gbqbevonBh57eILzModw6mrkbwM0gQBEuevE/AaBsHY=
 k8s.io/utils v0.0.0-20240310230437-4693a0247e57/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
 lukechampine.com/uint128 v1.1.1/go.mod h1:c4eWIwlEGaxC/+H1VguhU4PHXNWDCDMUlWdIWl2j1gk=
diff --git a/k8s/crds.yaml b/k8s/crds.yaml
index 64851fe1bb..a78c2001f8 100644
--- a/k8s/crds.yaml
+++ b/k8s/crds.yaml
@@ -1111,6 +1111,9 @@ spec:
               backingImageName:
                 description: The backing image name.
                 type: string
+              backupCount:
+                description: The number of backups that have been created.
+                type: string
               createdAt:
                 description: The backup volume creation time.
                 type: string
diff --git a/k8s/pkg/apis/longhorn/v1beta2/backupvolume.go b/k8s/pkg/apis/longhorn/v1beta2/backupvolume.go
index 47aeeb3a26..99f7492c94 100644
--- a/k8s/pkg/apis/longhorn/v1beta2/backupvolume.go
+++ b/k8s/pkg/apis/longhorn/v1beta2/backupvolume.go
@@ -55,6 +55,9 @@ type BackupVolumeStatus struct {
 	// +optional
 	// +nullable
 	LastSyncedAt metav1.Time `json:"lastSyncedAt"`
+	// The number of backups that have been created.
+	// +optional
+	BackupCount string `json:"backupCount"`
 }
 
 // +genclient
diff --git a/vendor/github.com/longhorn/backupstore/backupstore.go b/vendor/github.com/longhorn/backupstore/backupstore.go
index 9e79e8c8e8..fff2d69cb6 100644
--- a/vendor/github.com/longhorn/backupstore/backupstore.go
+++ b/vendor/github.com/longhorn/backupstore/backupstore.go
@@ -23,6 +23,10 @@ type Volume struct {
 	CompressionMethod    string `json:",string"`
 	StorageClassName     string `json:",string"`
 	DataEngine           string `json:",string"`
+
+	// It is not the count of the current backup on the backupstore,
+	// but how many backups of the volume have been created before.
+	BackupCount int64 `json:",string"`
 }
 
 type Snapshot struct {
@@ -74,6 +78,9 @@ func addVolume(driver BackupStoreDriver, volume *Volume) error {
 		return fmt.Errorf("invalid volume name %v", volume.Name)
 	}
 
+	// first time create backup volume means first time create backup on this backupstore
+	volume.BackupCount = 0
+
 	if err := saveVolume(driver, volume); err != nil {
 		log.WithError(err).Errorf("Failed to add volume %v", volume.Name)
 		return err
diff --git a/vendor/github.com/longhorn/backupstore/deltablock.go b/vendor/github.com/longhorn/backupstore/deltablock.go
index 73851e53b5..00a22cdc13 100644
--- a/vendor/github.com/longhorn/backupstore/deltablock.go
+++ b/vendor/github.com/longhorn/backupstore/deltablock.go
@@ -175,7 +175,7 @@ func CreateDeltaBlockBackup(backupName string, config *DeltaBackupConfig) (isInc
 	}
 
 	backupRequest := &backupRequest{}
-	if volume.LastBackupName != "" {
+	if volume.LastBackupName != "" && !isFullBackup(config) {
 		lastBackupName := volume.LastBackupName
 		var backup, err = loadBackup(bsDriver, lastBackupName, volume.Name)
 		if err != nil {
@@ -208,6 +208,9 @@ func CreateDeltaBlockBackup(backupName string, config *DeltaBackupConfig) (isInc
 		}
 	}
 
+	logrus.Infof("[DEBUG] isFullBackup(config): %v", isFullBackup(config))
+	logrus.Infof("[DEBUG] backupRequest.lastBackup: %v", backupRequest.lastBackup)
+
 	log.WithFields(logrus.Fields{
 		LogFieldReason:       LogReasonStart,
 		LogFieldObject:       LogObjectSnapshot,
@@ -368,7 +371,7 @@ func backupBlock(bsDriver BackupStoreDriver, config *DeltaBackupConfig,
 	}()
 
 	blkFile := getBlockFilePath(volume.Name, checksum)
-	if bsDriver.FileExists(blkFile) {
+	if bsDriver.FileExists(blkFile) && !isFullBackup(config) {
 		log.Debugf("Found existing block matching at %v", blkFile)
 		return nil
 	}
@@ -554,6 +557,7 @@ func performBackup(bsDriver BackupStoreDriver, config *DeltaBackupConfig, delta
 	volume.CompressionMethod = config.Volume.CompressionMethod
 	volume.StorageClassName = config.Volume.StorageClassName
 	volume.DataEngine = config.Volume.DataEngine
+	volume.BackupCount = volume.BackupCount + 1
 
 	if err := saveVolume(bsDriver, volume); err != nil {
 		return progress.progress, "", err
@@ -1303,3 +1307,12 @@ func getBlockNamesForVolume(driver BackupStoreDriver, volumeName string) ([]stri
 
 	return util.ExtractNames(names, "", BLK_SUFFIX), nil
 }
+
+func isFullBackup(config *DeltaBackupConfig) bool {
+	if config.Labels != nil {
+		if backupMode, exist := config.Labels[types.GetLonghornLabelKey(types.LonghornBackupOptionBackupMode)]; exist {
+			return backupMode == types.LonghornBackupModeFull
+		}
+	}
+	return false
+}
diff --git a/vendor/github.com/longhorn/backupstore/inspect.go b/vendor/github.com/longhorn/backupstore/inspect.go
index 590709aa54..2b221cfdd1 100644
--- a/vendor/github.com/longhorn/backupstore/inspect.go
+++ b/vendor/github.com/longhorn/backupstore/inspect.go
@@ -77,6 +77,7 @@ func fillVolumeInfo(volume *Volume) *VolumeInfo {
 		BackingImageChecksum: volume.BackingImageChecksum,
 		StorageClassname:     volume.StorageClassName,
 		DataEngine:           volume.DataEngine,
+		BackupCount:          volume.BackupCount,
 	}
 }
 
diff --git a/vendor/github.com/longhorn/backupstore/list.go b/vendor/github.com/longhorn/backupstore/list.go
index c61967fc18..1fe9e55d38 100644
--- a/vendor/github.com/longhorn/backupstore/list.go
+++ b/vendor/github.com/longhorn/backupstore/list.go
@@ -29,6 +29,7 @@ type VolumeInfo struct {
 	BackingImageChecksum string
 	StorageClassname     string
 	DataEngine           string
+	BackupCount          int64 `json:",string"`
 }
 
 type BackupInfo struct {
diff --git a/vendor/github.com/longhorn/backupstore/types/types.go b/vendor/github.com/longhorn/backupstore/types/types.go
index bc626cc5f4..b71880a020 100644
--- a/vendor/github.com/longhorn/backupstore/types/types.go
+++ b/vendor/github.com/longhorn/backupstore/types/types.go
@@ -1,5 +1,7 @@
 package types
 
+import "fmt"
+
 type ProgressState string
 
 const (
@@ -29,6 +31,16 @@ const (
 	NOProxy    = "NO_PROXY"
 
 	VirtualHostedStyle = "VIRTUAL_HOSTED_STYLE"
+
+	LonghornLabelKeyPrefix = "longhorn.io"
+)
+
+const (
+	LonghornBackupOptionBackupMode = "backup-mode"
+	LonghornBackupModeFull         = "full"
+	LonghornBackupModeIncremental  = "incremental"
+
+	LonghornBackupOptionFullBackupInterval = "full-backup-interval"
 )
 
 type Mapping struct {
@@ -65,3 +77,7 @@ const (
 const (
 	ErrorMsgRestoreCancelled = "backup restoration is cancelled"
 )
+
+func GetLonghornLabelKey(name string) string {
+	return fmt.Sprintf("%s/%s", LonghornLabelKeyPrefix, name)
+}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 4a33c35218..e8fc1b6492 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -232,7 +232,7 @@ github.com/longhorn/backing-image-manager/pkg/meta
 github.com/longhorn/backing-image-manager/pkg/rpc
 github.com/longhorn/backing-image-manager/pkg/types
 github.com/longhorn/backing-image-manager/pkg/util
-# github.com/longhorn/backupstore v0.0.0-20240219094812-3a87ee02df77
+# github.com/longhorn/backupstore v0.0.0-20240219094812-3a87ee02df77 => github.com/ChanYiLin/backupstore v0.0.0-20240322024320-ab6fa5ee775f
 ## explicit; go 1.21
 github.com/longhorn/backupstore
 github.com/longhorn/backupstore/backupbackingimage
diff --git a/webhook/resources/backup/validator.go b/webhook/resources/backup/validator.go
index 03697dee38..fd88afc498 100644
--- a/webhook/resources/backup/validator.go
+++ b/webhook/resources/backup/validator.go
@@ -1,10 +1,17 @@
 package backup
 
 import (
+	"fmt"
+	"strings"
+
 	admissionregv1 "k8s.io/api/admissionregistration/v1"
+	"k8s.io/apimachinery/pkg/runtime"
 
+	btypes "github.com/longhorn/backupstore/types"
 	"github.com/longhorn/longhorn-manager/datastore"
+	"github.com/longhorn/longhorn-manager/types"
 	"github.com/longhorn/longhorn-manager/webhook/admission"
+	werror "github.com/longhorn/longhorn-manager/webhook/error"
 
 	longhorn "github.com/longhorn/longhorn-manager/k8s/pkg/apis/longhorn/v1beta2"
 )
@@ -28,3 +35,42 @@ func (b *backupValidator) Resource() admission.Resource {
 		OperationTypes: []admissionregv1.OperationType{},
 	}
 }
+
+func (b *backupValidator) Create(request *admission.Request, newObj runtime.Object) error {
+	backup, ok := newObj.(*longhorn.Backup)
+	if !ok {
+		return werror.NewInvalidError(fmt.Sprintf("%v is not a *longhorn.Backup", newObj), "")
+	}
+
+	if backup.Spec.Labels != nil {
+		for key, value := range backup.Spec.Labels {
+			if !strings.HasPrefix(key, types.LonghornLabelKeyPrefix) {
+				continue
+			}
+			if err := validateBackupOption(key, value); err != nil {
+				return werror.NewInvalidError(err.Error(), "")
+			}
+		}
+	}
+
+	return nil
+
+}
+
+func validateBackupOption(label, value string) error {
+	option := label[strings.LastIndex(label, "/")+1:]
+
+	switch option {
+	case btypes.LonghornBackupOptionBackupMode:
+		if value != btypes.LonghornBackupModeFull &&
+			value != btypes.LonghornBackupModeIncremental {
+			return fmt.Errorf("%v:%v is not a valid option", label, value)
+		}
+	case types.LonghornLabelVolumeAccessMode:
+		return nil
+	default:
+		return fmt.Errorf("%v:%v is not a valid option", label, value)
+	}
+
+	return nil
+}