Rolling back a virtual machine to a snapshot

Prerequisite

The virtual machine is in the Shutdown state.

Precaution

• If the virtual machine has CPU exclusive enabled, CPU exclusive will be disabled by default after the rollback. You can re-enable it manually.
• If the snapshot contains a disk that is not currently mounted on the virtual machine, the disk will be rebuilt and remounted after the rollback.
• If the snapshot does not contain the disk mounted in the current virtual machine, the corresponding disk will be unmounted after the rollback.
• If the floating IP of the VPC NIC in the snapshot is different from the floating IP currently used by the NIC, the floating IP configuration of the NIC will be deleted after the rollback, and the floating IP will not be used.
• If GPU passthrough devices, vGPUs, PCI passthrough NICs, SR-IOV passthrough NICs, or USB devices are mounted to the virtual machine, they will be unmounted after a rollback.
• Rolling back the virtual machine to a snapshot does not affect the status of Autostart with host.
• Rolling back the virtual machine to a snapshot does not affect the redundancy policy, provisioning, or data encryption of virtual volumes.

Procedure

1. In the virtual machine details panel, select the Snapshot tab. Select the snapshot to be rolled back, click the ellipsis (...), and select Rollback.

2. In the pop-up Rollback VM dialog box, confirm the information and click Rollback.

   If the disk information in the snapshot is not consistent with that in the virtual machine, that is, when the situation described in the above precautions occurs, the system will prompt and list the disk information mounted before and after the rollback. The rollback operation can only be continued after you confirm it.