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k10 backup failed with error Failed to receive upload response

  • July 29, 2026
  • 2 comments
  • 24 views

Hi,

 

We are protecting a virtual machine in OCP, backup failed on export phase showing the below:
status:
  endTime: "2026-07-28T11:38:02Z"
  error:
    cause: '{"cause":{"cause":{"message":"Failure in exporting restorepoint"},"fields":[{"name":"FailedSubPhases","value":[{"Err":{"cause":{"cause":{"cause":{"cause":{"cause":{"cause":{"cause":{"cause":{"cause":{"cause":{"message":"rpc
      error: code = DeadlineExceeded desc = context deadline exceeded"},"fields":[{"name":"snapshotID","value":"k10-csi-snap-d9lxt6q44c8s2sqw"},{"name":"sourceDeviceFile","value":"/mnt/sourceDevice/kanister-pvc-pnwzb"},{"name":"volumeID","value":"test112-vm-186544-mm2tf"}],"file":"kasten.io/api/datamover/client/backup_service.go:71","function":"kasten.io/api/datamover/client.(*backupServiceImpl).Upload","linenumber":71,"message":"failed
      to receive upload response"},"fields":[{"name":"pod","value":"block-mode-upload-t8rqz"},{"name":"snapshotID","value":"k10-csi-snap-d9lxt6q44c8s2sqw"},{"name":"sourceDeviceFile","value":"/mnt/sourceDevice/kanister-pvc-pnwzb"},{"name":"volumeID","value":"test112-vm-186544-mm2tf"}],"file":"kasten.io/k10/kio/datamover/upload_pod.go:1020","function":"kasten.io/k10/kio/datamover.(*UploadPodImpl).runUploadSnapshotCmd","linenumber":1020,"message":"failed
      to upload exported volume snapshot"},"file":"kasten.io/k10/kio/exec/internal/backupobjects/utils.go:719","function":"kasten.io/k10/kio/exec/internal/backupobjects.DMUploadSnapshot","linenumber":719,"message":"Custom
      upload failure"},"file":"kasten.io/k10/kio/exec/internal/backupobjects/export_alg.go:505","function":"kasten.io/k10/kio/exec/internal/backupobjects.(*ExportAlg).exportBlockModeObjectSingleVolPod","linenumber":505,"message":"Error
      uploading snapshot"},"fields":[{"name":"type","value":"CSI"},{"name":"id","value":"k10-csi-snap-d9lxt6q44c8s2sqw"}],"file":"kasten.io/k10/kio/exec/internal/backupobjects/export_alg.go:266","function":"kasten.io/k10/kio/exec/internal/backupobjects.(*ExportAlg).Process.func3","linenumber":266,"message":"Failed
      to export snapshot data"},"file":"kasten.io/k10/kio/exec/phases/phase/artifactcopier.go:461","function":"kasten.io/k10/kio/exec/phases/phase.(*ArtifactCopier).convertSnapshots.func2","linenumber":461,"message":"algorithm
      failed"},"file":"kasten.io/k10/kio/exec/phases/phase/artifactcopier.go:244","function":"kasten.io/k10/kio/exec/phases/phase.(*ArtifactCopier).Copy","linenumber":244,"message":"Error
      converting snapshots"},"file":"kasten.io/k10/kio/exec/phases/phase/export.go:270","function":"kasten.io/k10/kio/exec/phases/phase.(*exportRestorePointPhase).performCopyToKopia","linenumber":270,"message":"failed
      to copy artifacts"},"file":"kasten.io/k10/kio/exec/phases/phase/export.go:169","function":"kasten.io/k10/kio/exec/phases/phase.(*exportRestorePointPhase).Run","linenumber":169,"message":"failed
      to copy to kopia"},"fields":[],"message":"Job failed to be executed"},"ID":"aec70853-8a65-11f1-9dd4-0a580ada064f","Phase":"Exporting
      RestorePoint"}]}],"file":"kasten.io/k10/kio/exec/phases/phase/queue_and_wait_children.go:200","function":"kasten.io/k10/kio/exec/phases/phase.(*queueAndWaitChildrenPhase).processGroup","linenumber":200,"message":"Failure
      in exporting restorepoint"},"fields":[{"name":"manifestID","value":"a30393b0-8a65-11f1-9dd4-0a580ada064f"},{"name":"jobID","value":"a305c5d8-8a65-11f1-b325-0a580ad90a41"},{"name":"groupIndex","value":0}],"file":"kasten.io/k10/kio/exec/phases/phase/queue_and_wait_children.go:101","function":"kasten.io/k10/kio/exec/phases/phase.(*queueAndWaitChildrenPhase).Run","linenumber":101,"message":"Failed
      checking jobs in group"}'
    message: Job failed to be executed
 

exporting pods in namespace is working fine, only virtual machine export is failing.

Any advise?

2 comments

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  • Experienced User
  • July 29, 2026

hi ​@Ali Kanso 

Thanks for reaching out to us. 

Based on the error, this appears to be a context deadline exceeded issue, which means the operation is hitting some type of timeout.

Could you please confirm how long the backup job ran before it failed? Also, what is the size of the VM? What is your CSI Driver ? 

Regards
Satish


  • Author
  • Comes here often
  • July 29, 2026

Hi Satish,

Thanks for your immediate response.
It took around 40 min and get failed.
PVCs inside this namespace is 7 TB and CSI is csi.trident.netapp.io.