Backup struck with progress for long time

[praveensams16]

Hi Team ,

I am taking eks k8s backup using velero

Client:
Version: v1.4.0
Git commit: 5963650
Server:
Version: v1.4.0

my backup getting struck for long time in progress

NAME STATUS CREATED EXPIRES STORAGE LOCATION SELECTOR
testing InProgress 2021-08-07 13:30:42 +0000 UTC 29d default
velero-prod-cluster-20210807000034 PartiallyFailed (54 errors) 2021-08-07 00:00:34 +0000 UTC 6d default
velero-prod-cluster-20210806000055 InProgress 2021-08-06 00:00:55 +0000 UTC 5d default
velero-prod-cluster-20210805000027 InProgress 2021-08-05 00:00:27 +0000 UTC 4d default
velero-prod-cluster-20210804000045 PartiallyFailed (2 errors) 2021-08-04 00:00:45 +0000 UTC 3d default
velero-prod-cluster-20210803000008 InProgress 2021-08-03 00:00:11 +0000 UTC 2d default
velero-prod-cluster-20210802000015 PartiallyFailed (2 errors) 2021-08-02 00:00:15 +0000 UTC 1d default
velero-prod-cluster-20210801000045 PartiallyFailed (54 errors) 2021-08-01 00:00:45 +0000 UTC 9h default

###################

describe
Name: velero-prod-cluster-20210805000027
Namespace: velero
Labels: app.kubernetes.io/instance=velero
app.kubernetes.io/managed-by=Helm
app.kubernetes.io/name=velero
helm.sh/chart=velero-2.12.0
velero.io/schedule-name=velero-prod-cluster
velero.io/storage-location=default
Annotations: velero.io/source-cluster-k8s-gitversion=v1.17.17-eks-087e67
velero.io/source-cluster-k8s-major-version=1
velero.io/source-cluster-k8s-minor-version=17+

Phase: InProgress

Namespaces:
Included: *
Excluded: velero

Resources:
Included: *
Excluded:
Cluster-scoped: auto

Label selector:

Storage Location: default

Velero-Native Snapshot PVs: auto

TTL: 168h0m0s

Hooks:

Backup Format Version: 1

Started: 2021-08-05 00:00:27 +0000 UTC
Completed: <n/a>

Expiration: 2021-08-12 00:00:27 +0000 UTC

Velero-Native Snapshots:

and some time I am getting error like below

level=error msg="Error getting volume snapshotter for volume snapshot location" backup=velero/velero-prod-cluster-20210801000045 error="rpc error: code = Unavailable desc = connection error: desc = "transport: error while dialing: dial unix /tmp/plugin072363595: connect: connection refused"" logSource="pkg/backup/item_backupper.go:437" name=pvc-5053527a-eedf-489c-b6a3-2138247036d2 namespace= persistentVolume=pvc-5053527a-eedf-489c-b6a3-2138247036d2 resource=persistentvolumes volumeSnapshotLocation=default

[praveensams16]

Need support on troubleshooting