Issue with Virtual Machine Storage vMotion. It fails with "Failed to copy source (<source Path>/vmname.vmdk) to destination (<destination path>/vmname.vmdk): Address temporarily unmapped. Failed to copy one or more disks error.

Products

• VMware vSphere ESXi

Issue/Introduction

Error while performing storage vmotion at vCenter Client

 A fatal internal error occurred. See the virtual machine's log for more details. 2025-06-16T20:16:17.238553Z Failed to copy source (/vmfs/volumes/656d5a12-fa09c1e0-4577-######/vmname/vmname.vmdk) to destination (/vmfs/volumes/6267ebda-7f7ec8e8-23ed-####/vmname/vmname.vmdk): Address temporarily unmapped. Failed to copy one or more disks.
 
 Error stack:
 Failed to copy source (/vmfs/volumes/656d5a12-fa09c1e0-4577-######/vmname/vmname.vmdk) to destination (/vmfs/volumes/6267ebda-7f7ec8e8-23ed-####/vmname/vmname.vmdk): Address temporarily unmapped.
 Failed to copy one or more disks.
 A fatal internal error occurred. See the virtual machine's log for more details.


hostd.log:
32-01-6b-c7dd] VMotionInitiateSrc: Start message: A fatal internal error occurred. See the virtual machine's log for more details.
--> Failed to copy one or more disks.
--> Failed to copy source (/vmfs/volumes/656d5a12-fa09c1e0-4577-#######/vmname/vmname.vmdk) to destination (/vmfs/volumes/6267ebda-7f7ec8e8-23ed-#######/vmname/vmname.vmdk): Address temporarily unmapped.
-->
2025-06-19T19:20:23.643Z verbose hostd[2101211] [Originator@6876 sub=Vmsvc.vm:/vmfs/volumes/656d68b4-32ad3212-4613-#######/vmname/vmname.vmx opID=m4hsw49c-1047651-auto-mgdg-h5:70287204-32-01-
6b-c7dd] VMotionStatusCb [1562119173448883349]: Failed with error [N3Vim5Fault20GenericVmConfigFaultE:0x000000e069a6c070]
2025-06-19T19:20:23.643Z verbose hostd[2101211] [Originator@6876 sub=Vmsvc.vm:/vmfs/volumes/656d68b4-32ad3212-4613-#######/vmname/vmname.vmx opID=m4hsw49c-1047651-auto-mgdg-h5:70287204-32-01-
6b-c7dd] VMotionStatusCb: Firing ResolveCb
2025-06-19T19:20:23.643Z info hostd[2101211] [Originator@6876 sub=Vcsvc.VMotionSrc.1562119173448883349 opID=m4hsw49c-1047651-auto-mgdg-h5:70287204-32-01-6b-c7dd] ResolveCb: VMX reports needsUnregister = fal
se for migrateType MIGRATE_TYPE_DISKSONLY
2025-06-19T19:20:23.643Z info hostd[2101211] [Originator@6876 sub=Vcsvc.VMotionSrc.1562119173448883349 opID=m4hsw49c-1047651-auto-mgdg-h5:70287204-32-01-6b-c7dd] ResolveCb: Failed with fault: (vim.fault.Gen
ericVmConfigFault) {
-->    faultMessage = (vmodl.LocalizableMessage) [
-->       (vmodl.LocalizableMessage) {
-->          key = "msg.svmotion.fail.internal",
-->          message = "A fatal internal error occurred. See the virtual machine's log for more details.",
-->       },
-->       (vmodl.LocalizableMessage) {
-->          key = "msg.svmotion.disk.copyphase.failed",
-->          message = "Failed to copy one or more disks.",
-->       },
-->       (vmodl.LocalizableMessage) {
-->          key = "msg.mirror.disk.copyfailed",
-->          arg = (vmodl.KeyAnyValue) [
-->             (vmodl.KeyAnyValue) {
-->                key = "1",
-->                value = "/vmfs/volumes/656d5a12-fa09c1e0-4577-#######/vmname/vmname.vmdk"
-->             },
-->             (vmodl.KeyAnyValue) {
-->                key = "2",
-->                value = "/vmfs/volumes/6267ebda-7f7ec8e8-23ed-#######/vmname/vmname.vmdk"
-->             },
-->             (vmodl.KeyAnyValue) {
-->                key = "3",
-->                value = "Address temporarily unmapped"
-->             }
-->          ],
-->          message = "Failed to copy source (/vmfs/volumes/656d5a12-fa09c1e0-4577-#######/vmname/vmname.vmdk) to destination (/vmfs/volumes/6267ebda-7f7ec8e8-23ed-#######/vmname/vmname.vmdk): Address temporarily unmapped. "
-->       }
-->    ],
-->    reason = "A fatal internal error occurred. See the virtual machine's log for more details.",
-->    msg = "A fatal internal error occurred. See the virtual machine's log for more details.
--> Failed to copy one or more disks.
--> Failed to copy source (/vmfs/volumes/656d5a12-fa09c1e0-4577-#######/vmname/vmname.vmdk) to destination (/vmfs/volumes/6267ebda-7f7ec8e8-23ed-#######/vmname/vmname.vmd
k): Address temporarily unmapped.
--> "
--> }


vmkernel.log:
2025-06-19T19:20:23.260Z cpu5:5687024)FS3DM: 2321: status Address temporarily unmapped copying 1 extents between two files, bytesTransferred = 0 extentsTransferred: 0
2025-06-19T19:20:23.260Z cpu5:5687024)WARNING: SVM: 2869: scsi0:1 Failed SVMFDSIoctlMoveData: Address temporarily unmapped

vobd.log:
2025-06-16T20:09:41.045Z: [vmfsCorrelator] 488084042804us: [esx.problem.vmfs.extent.offline] An attached device eui.####################:1 may be offline. The file system [datatsore_name, 656d5a12-fa09c1e0-4577-#########] is now in a degraded state. While the datastore is still available, parts of data that reside on the extent that went offline might be inaccessible.

Environment

vSphere 7.x 8.x 

Cause

We need to make sure both the devices are present to the host by running below cmd, if any one device or extent is not seen by the host, we have to present the device back to the host in same state as it was before.

run below cmd to check if device is present to the host

esxcli storage core device list -d eui.######b
esxcfg-scsidevs -c | grep -i eui.######b

Resolution

Present both the extent device to the host in same state as it was before and perform re-scan of storage at cluster level.