The specified delta disk format 'nativeFormat' is not supported"."Delete all snapshots" task initiated from vCenter will be completed successfully but the VM disk will still be residing on snapshot.var/run/log/vpxd/vpxd.log file, similar entries are seen: YYYY-MM-DDTHH:MM.SSSZ info vpxd[05857] [Originator@6876 sub=vpxLro opID=vcd-########-####-#####-####-############;activity=urn:uuid:########-####-#####-####-############] [VpxLRO] -- BEGIN task-961416 -- vm-#### -- vim.VirtualMachine.promoteDisks -- ########-####-#####-####-############(########-####-#####-####-############)YYYY-MM-DDTHH:MM.SSSZ info vpxd[57272] [Originator@6876 sub=vpxLro opID=vcd-########-####-#####-####-############;activity=urn:uuid:########-####-#####-####-############-fb] [VpxLRO] -- FINISH lro-270860342YYYY-MM-DDTHH:MM.SSSZ info vpxd[04407] [Originator@6876 sub=vpxLro opID=1691e6f2] [VpxLRO] -- FINISH lro-270859992YYYY-MM-DDTHH:MM.SSSZ info vpxd[05857] [Originator@6876 sub=VmprovXaction opID=vcd-########-####-#####-####-############;activity=urn:uuid:########-####-#####-####-############-81] Starting journal rollbackYYYY-MM-DDTHH:MM.SSSZ info vpxd[05857] [Originator@6876 sub=VmprovXaction opID=vcd-########-####-#####-####-############;activity=urn:uuid:########-####-#####-####-############-81] Starting journal rollbackYYYY-MM-DDTHH:MM.SSSZ info vpxd[05857] [Originator@6876 sub=VmprovXaction opID=vcd-########-####-#####-####-############;activity=urn:uuid:########-####-#####-####-############-81] Undo ReserveName: Host: vim.HostSystem:host-#####, Name: N/AYYYY-MM-DDTHH:MM.SSSZ info vpxd[05857] [Originator@6876 sub=vpxLro opID=vcd-########-####-#####-####-############;activity=urn:uuid:########-####-#####-####-############-81] [VpxLRO] -- FINISH task-961416YYYY-MM-DDTHH:MM.SSSZ info vpxd[05857] [Originator@6876 sub=Default opID=vcd-########-####-#####-####-############;activity=urn:uuid:########-####-#####-####-############-81] [VpxLRO] -- ERROR task-961416 -- vm-#####-- vim.VirtualMachine.promoteDisks: vim.fault.DeltaDiskFormatNotSupported:--> Result:--> (vim.fault.DeltaDiskFormatNotSupported) {--> faultCause = (vmodl.MethodFault) null,--> faultMessage = <unset>,--> datastore = <unset>,--> deltaDiskFormat = "nativeFormat"--> msg = ""--> }--> Args:-->--> Arg unlink:--> true--> Arg disks:--> (vim.vm.device.VirtualDisk) []native Format type' is Not Supported.As a workaround Clone or Storage vMotion the impacted VM to change the disk format to seSparseFormat and then try to consolidate.