0 Replies Latest reply on Sep 20, 2018 5:37 AM by sonalg

    "Cannot compute changes for disk " error for disk attached after first snapshot

    sonalg Lurker

      Hi,

      I 'm facing this error when we call queryChangedDiskAreas with changeID as '*' for a disk attached to a VM (which already had a snapshot and then deleted).

       

      Steps:

      Vm has one disk D1. Take snapshot and note ChangeID1 for D1.

      Delete snapshot.

      Attach new disk D2.

      Take snapshot.

      call queryChangedDiskAreas with changeID as 'ChangeID1 '  for D1. Returns success

      call queryChangedDiskAreas with changeID as '*'  for  D2. Returns Unable to retrieve queryChangedDiskAreas : FileFault Exception

       

      New disk D2 , had CBT enabled when it was created.

      Here is error in ESX hostd.log

      2018-09-20T11:05:02.724Z [53EC2B70 error 'Vmsvc.vm:/vmfs/volumes/9baf0124-30ff66fd/TestVM/TestVM.vmx' opID=48545664-e3 user=vpxuser] Cannot compute changes for disk /vmfs/volumes/9baf0124-30ff66fd/TestVM/TestVM_1-000002.vmdk: Unknown change epoch.

       

      Is this known issue?