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?