Migration progress details

This page provides an exhaustive list of the steps and sub-steps for replication cycles, test-clone and cut-over, as well as the reference information for adaptation reports generated during your migrations.

Replication cycle details

During the replication cycle, one of the following sub-steps is displayed along with the replication status:

Replication status sub-step	Actions performed
Initializing replication	Initiating migration cycle, creating a snapshot of the source VM, and scanning for changes in the source VM disk data.
Replicating	Live progress of the source VM data upload.
Post processing	Creating a snapshot of the target disks, running OS adaptations, and deleting the source VM snapshot.
Idle	There is no active cycle.

Snapshots created when migrating a workload

While using Migrate to Virtual Machines with a workload, every replication cycle starts with creating a snapshot of the migrating VM's disks. Older snapshots are deleted at the end of each cycle.

The snapshot also includes the tags provided in the User tagssection of the source creation together with tags unique to Migrate to Virtual Machines that help the service identify VMs for cleanup.

Test-clone details

While creating a test-clone of a migrated VM, you'll see one of the following sub-steps displayed:

Test-clone status sub-steps	Actions performed	Comments
OS Adaptation	Running OS adaptation	(Optional) Visible if the target license has changed since the last successful adaptation run.
Preparing VM Disks	Preparing VM disks for migration, creating an image of the source VM.
Instantiating Migrated VM	Creating the target VM with the migrated workload.

Cut-over details

While creating a cut-over of your workload, you'll see one of the following sub-steps displayed:

Cut-over status sub-steps	Actions performed	Comments
Previous Replication Cycle	Identical to any replication cycle (including the same sub-steps).	(Optional) Visible if a prior replication cycle was active when the cut-over job was created.
Shutting down VM	Shut down the source VM.	Initiates source VM down-time.
Final sync	Final replication cycle (including the same sub-steps).
Preparing VM disks	Preparing VM disks for migration, creating an image of the source VM.	An identical action is performed during the test-clone phase.
Instantiating Migrated VM	Creating the target VM with the migrated workload.	An identical action is performed during the test-clone phase.

Adaptation report

Migrate to Virtual Machines generates adaptation reports during replication cycles, test-clone, and cut-over. You can use this information for troubleshooting, problem solving, and deeper insight into your migration process.

For a migrating VM instance, the adaptation report is available after at least one replication cycle. To view the adaptation report for a migrating VM instance, follow these steps:

Open the Migrate to Virtual Machines page in the Google Cloud console:

Go to Migrate to Virtual Machines
Click the migrating VM instance name. Note that this VM instance must have completed at least one replication cycle.
Click the Replication Historytab.
Click a completed replication cycle to open it.
Click the Cloud Logging icon. The adaption report opens in Cloud Logging.

Here is an example of an adaptation report:

  "Adaptation 
  
 report: 
  
 root:{type:{value:\"linux\"} 
  
 osinfo:{value:\"ubuntu14.04\"} 
  
 distro:{value:\"ubuntu\"} 
  
 product_name:{value:\"Ubuntu 
  
 14.04.5 
  
 LTS\"} 
  
 major_version:{value:14} 
  
 minor_version:{value:4}} 
  
 boot_type:BIOS 
  
 guest_os_features:\"VIRTIO_SCSI_MULTIQUEUE\" 
  
 applied_license:{type:NONE 
  
 default:true}"

The fields for the Migrate to Virtual Machines adaptation report:

Field

Description

status

The status of this adaptation report. Possible values:

SUCCESS
FAILURE

errors

List of errors in this adaptation report.

warnings

List of warnings in this adaptation report.

root

The root file system of the OS.

boot_type

The boot type of the VM. Possible values:

UNKNOWN
BIOS
UEFI

guest_os_features

Guest OS Features to attach on the boot disk.

licenses

Licenses to attach on the boot disk.

applied_license

License information to support user license type setting. applied_license.default indicates whether Migrate to Virtual Machines should apply the default license for your migration. applied.license.type specifies the applied license for your migration if applied_license.default is set to FALSE .
Possible values applied_license.type :

UNSPECIFIED
NONE
BYOL
PAYG

Possible values applied_license.default:

TRUE (default)
FALSE