Storage vMotion fails with the error: Storage vMotion failed to copy one or more of the virtual machine's disks
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Article ID: 311179
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Updated On:
Products
VMware vSphere ESXi
Issue/Introduction
Symptoms:
Cannot migrate a virtual machine using Storage vMotion
Storage migration of a virtual machine fails
You see this error:
A general system error occurred: Storage vMotion failed to copy one or more of the VM's disks. Please consult the VM's log for more details, looking for lines starting with "CBTMotion".
In the logs of the affected virtual machine, you see entries similar to these:
Nov 12 18:15:01.079: Worker#0| CBTMotion: scsi0:1: Clone: failed to start block tracking session on source disk: Change tracking is not active for this disk. Nov 12 18:15:01.080: Worker#0| CBTMotion: scsi0:1: failed to clone disk from /vmfs/volumes/UUID/vmname.vmdk to /vmfs/volumes/UUID/vmname.vmdk. Nov 12 18:15:01.080: Worker#0| CBTMotion: disk clone failed, aborting Storage VMotion. Nov 12 18:15:01.080: Worker#0| Msg_Post: Error Nov 12 18:15:01.080: Worker#0| [msg.cbtmotion.disk.clone.failed] Disk clone failed. Canceling Storage vMotion.