问题
I am trying to detach the Boot Disk from a GCE VM. As the VM is stopped so it should allow me to detach it but it's returning this error
UNSUPPORTED_OPERATION: Hot-remove of the root disk is not supported.
Any suggestions?
回答1:
If you detach the boot disk from a stopped VM, there's no way to restart the VM back up, so that operation does not make sense.
Thus, you would need to disable the option "auto-delete boot disk" and delete the VM:
To set the auto delete state of a persistent disk in
gcloud compute, use the gcloud compute instances set-disk-auto-delete command:gcloud compute instances set-disk-auto-delete INSTANCE \ [--auto-delete | --no-auto-delete] --disk DISK --zone ZONE
Alternatively, you can also change this setting on the VM details page from the Developers Console by clicking on the VM instance name, and then unchecking this option:
☐ Delete boot disk when instance is deleted
回答2:
You can't hot-remove the root disk of a VM otherwise you'd render it unusable (shutdown assumes you want to start the VM at a later point). Instead, you can delete the VM instance, making sure to preserve the root disk for future use.
回答3:
Detaching boot disks is now supported in Beta (docs). After shutting down instance, try: gcloud beta compute instances detach-disk INSTANCE_NAME --disk DISK_NAME
To re-attach a boot disk to the instance: gcloud beta compute instances attach-disk INSTANCE_NAME --disk DISK_NAME --boot
来源：https://stackoverflow.com/questions/28152577/detach-boot-disk-from-gce-vm