Snapshot consolidation does not complete with "Failed to get copy progress" error
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Snapshot consolidation does not complete with "Failed to get copy progress" error

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Article ID: 401273

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Updated On:

Products

VMware vSphere ESXi VMware vSphere ESXi 8.0

Issue/Introduction

  • Snapshot consolidation fails with below error:

    Failed to get copy progress while consolidating disks from '/vmfs/volumes/<volume UUID>/<vm name>/<snapshot.vmdk> to '/vmfs/volumes/<volume UUID>/<vm name>/<parent disk.vmdk>'.

  • virtual machine vmware.log shows the snapshot consolidation progress remains at 0 for several hours and finally times out:

    In(05) vmx - SnapshotESXCombineProgressTotal: Snapshot consolidation progress: 0
    In(05) vmx - SnapshotESXCombineProgressTotal: Snapshot consolidation progress: 0
    ......
    In(05) vmx - SnapshotESXCombineProgressTotal: Snapshot consolidation progress: 0
    Wa(03) vmx - Mirror: scsi0:1: Failed to copy disk: Timeout

  • ESXi host /var/run/log/vmkernel.log keeps complaining about IO abort on underlying storage during snapshot consolidation:

    Fil6: 4094: '<datastore name>': Fil6 file IO (<FD c32 r57>) : IO was aborted

Environment

VMware vSphere ESXi 8.0

Cause

IO is being aborted on the underlying storage which is preventing snapshot consolidation from proceeding.

Resolution

Storage vendor needs to be engaged in this situation to further investigate the reason for IO abort on underlying storage.

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