You're viewing documentation for a prior version of Migrate for Compute Engine (formerly Velostrata). You can continue using this version, or use the current version.

Release Notes

This page documents production updates to Migrate for Compute Engine. You can periodically check this page for announcements about new or updated features, bug fixes, known issues, and deprecated functionality.

You can see the latest product updates for all of Google Cloud on the Google Cloud release notes page.

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For a list of builds for this release and others, see the Build history.

Requirements and OS Support

See Requirements and Supported operating systems.

4.9 new features

Automatic upgrade of Windows 2008 R2 to Windows 2012

This version introduces automatic upgrade of Windows 2008 R2 to Windows 2012 as part of the migration to Google Cloud. The system supports mass automatic upgrade of all VMs that are part of a migration wave in parallel.

Create test clone VM at Compute Engine from AWS and Azure sources

As of this version, you can create test clone VMs on Compute Engine from instances running in AWS or Azure sources.

Linux RHEL 8 and CentOS 8 support

This version enhances the OS support matrix to include RHEL 8 and CentOS 8.

4.9.2

See the downloads page for the upgrade package and hash. To upgrade, see the instructions in Applying patches and upgrades.

Fixed issues

Fixed an issue with Windows partition detection for certain volume structures.

4.9.1

See the downloads page for the upgrade package and hash. To upgrade, see the instructions in Applying patches and upgrades.

Fixed issues

Improved system stability on very large scale migrations.

Improved stability to Migrate for Compute Engine upgrade.

Fixed an issue with Edge Node version upgrades.

Added support for E2 machine types.

Fixed an issue with non-ASCII entries in Windows OS servicing.

Stability improvements to Linux OS servicing.

Fixed an issue with Migrate for Compute Engine Backend volume mounting affecting VMs originally created prior to VSphere 5.0 (requires reinstall of the system).

4.9.0

Known Issues

#159008022: On certain Windows installations, Windows adaptations may fail to find the Windows installation drive. This can happen if the volume on which Windows is installed has an allocated partition larger than 1GB preceding the Windows and/or SYSTEM partitions.

Workaround: If the partition is not in use:

  1. In Windows, go to "Disk Management".
  2. Select the Raw partition before any Windows or SYSTEM RESERVED partitions, and deallocate it by right clicking, and selecting "delete volume".

Otherwise: Please upgrade Migrate for Compute Engine version 4.9.2 or later which contains the fix.

#158647217: Windows image from AWS fails to start after migration.

Some Windows images from AWS might fail when running on GCP with the following error message written to the console:

Windows failed to start. A recent hardware or software change might be the cause. To fix the problem:
      1. Insert your Windows installation disc and restart your computer.
      2. Choose your language settings, and then click "Next."
      3. Click "Repair your computer."
    If you do not have this disc, contact your system administrator or computer manufacturer for assistance. 
    File: \Windows\system32\DRIVERS\ena.sys 
    Status: 0xc0000428

This issue is a result of an AWS driver being marked as corrupt when Windows starts in a different environment.

Workaround: Before migrating:

  1. Backup the system and delete the following file from the source AWS instance:

    C:\Windows\system32\DRIVERS\ena.sys
  2. For the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ena registry entry, set the Start subkey to 4.

This issue is fixed in versions 4.10 and above.

#149004085: Ubuntu 14 from on-premise may fail to start networking post detach.

Workaround: Connect via the serial console and manually add the network interface with DHCP.

#145086776: In rare cases, older versions of RHEL7 may hang during streaming or reach a Kernel panic. This issues were resolved in later versions of RHEL7.

Workaround: Run sudo yum update before migrating to update the system.

#145644737: Clones created on Azure or AWS from instances of Linux distributions that use cloud-init may experience issues in booting after installing the Linux prep package.

Workaround: Uninstall the package before cloning and reinstall when preparing to migrate.

### Previous known issues

#143313211: Customer migrating RHEL 6.8 VM may experience boot issues in the cloud destination.

RHEL 6.x systems using kernel versions 2.6.32-xxx and using LVM may reach a kernel panic when booting in Compute Engine during migration.

Workaround: The kernel should be upgraded to 2.6.32-754 or higher before migrating.

#143262721: Migration of VM from Azure fails when data disk is greater than 4 terabytes.

At this time, Migrate for Compute Engine does not support migration of Azure VMs with data disks bigger than 4TB.

Workaround: Make sure VM has data disk smaller than 4TB.

#131532690: Run-in-cloud and migration operations may fail for Windows Server 2016 workload when Symantec Endpoint Protection (SEP) is installed. This may also happen when SEP appears to be disabled.

Workaround: Modify workload Network interface bindings to remove the SEP option.

  1. Download Microsoft Network VSP Bind (nvspbind)
  2. Install Microsoft_Nvspbind_package.EXE into c:\temp.
  3. Open a command prompt as an Administrator and run the following:
    nvspbind.exe /d * symc_teefer2
        </li>
      </ol>
    

#131614405: When the Velostrata Prep RPM is installed on SUSE Linux Enterprise Server 11, the VM obtains a DHCP IP address in addition to an existing static IP configuration. This issue occurs when the VM is started on-premises in a subnet that is enabled with DHCP services.

Note: The issue does not occur when the subnet has no DHCP services. There is no connectivity impact for communications with the original static IP address.

#131637800: After registering the Velostrata plug-in, running the Cloud Extension wizard might generate an error "XXXXXXXXXX" upon "Finish".

Workaround: Un-register the Velostrata plug-in and restart the vSphere Web client service, then re-register the plug-in. Contact support if the issue persists.

#131548730: In some cases, when a VM is moved to Run-in-Cloud while a 3rd party VM-level backup solution holds a temporary snapshot, the Migrate for Compute Engine periodic write-back operations will not complete even after the backup solution deletes the temporary snapshot. The uncommitted writes counter on the VM will show an increasing size and no consistency checkpoint will be created on-premises.

Workaround: Select the Run On-Premises action for the VM and wait for the task to complete, which will commit all pending writes. Then select the Run-in-Cloud action again. Note that committing many pending writes may take a while. Do not use the Force option as this will result in the loss of the uncommitted writes.

#131605387: vCenter reboot causes Velostrata tasks in vCenter to disappear from UI. This is a vCenter limitation.

Workaround: Use the Velostrata PowerShell module to monitor Velostrata managed VMs or Cloud Extensions tasks that are currently running.

#131638716: With an ESXi host in maintenance mode, if a VM is moved to cloud, the operation will fail and get stuck in the rollback phase.

Workaround: Manually cancel the Run-in-Cloud task, migrate the VM to another ESXi host in the cluster and retry the Run-in-Cloud operation.

#131638455: A Run-in-Cloud operation fails with the error - "Failed to create virtual machine snapshot. The attempted operation cannot be performed in the current state (Powered off)".

Workaround: The VMware VM snapshot file may be pointing to a non-existent snapshot. Contact support for assistance in correcting the issue.

#131534862: In rare cases, after running a Workload back on-premises - Workload VMDK's are locked. In certain cases, this is due to network disruptions between the Velostrata management appliance and the ESXi host on which the workload is running.

Note: The issue will resolve itself after 1-2 hours.

#131550214: During Detach, the operation might fail with the following error message: "Operation was canceled".

Workaround: Retry the Detach operation.

#131650367: When performing a detach after a cancel detach operation, the action may fail.

Workaround: Retry the operation.

#131649978: In the event of certain system failures, Velostrata components disconnect from vCenter. In this case, an event may not be sent, resulting in the alarm either not being set properly or not being cleared properly.

Workaround: Clear the alarm manually in vCenter.

#131532549: For workloads with a Windows machine using a retail license, when returning from the cloud, the license is not present.

Workaround: Reinstall the license.

#131555885: vCenter "Export OVA" operation is available when the VM in cloud is running in cache mode, however, this operation results in a corrupted OVA.

Workaround: Only create OVA after the detach.

#131647857: In rare cases, when a cloud component instance is created and system fails before it is tagged, the instance will remain untagged. This will not allow full clean-up or repair of the CE.

Workaround: Manually tag the instance, and then run "Repair".

#131537125: Cloud Extension high availability does not work for workloads running Ubuntu OS with LVM configuration.

Workaround: Update the kernel to 3.13.0-161 or higher.

#131560126: Suse12: Due to a bug in SUSE kernel older than 4.2, configurations that include BTRFS mounts with subvolumes are not supported.

Workaround: Upgrade to SUSE version with Kernel >=4.2 (SP2).

#131533480: When using the Create Cloud Extension wizard, using an illegal HTTP proxy address will not generate a warning message.

Workaround: Delete the CE and then create the CE with a valid HTTP proxy address.

#131647654: Run on-premises operation succeeded but the status is marked as failed with error "Failed to consolidate snapshots"

Workaround: Consolidate snapshots via vCenter, and clear the error manually.

#131558198: PowerShell client for cloud to cloud Runbook reports errors when running on PowerShell 3.0

Workaround: Upgrade to PowerShell 4.0

#131533056: When migrating RHEL 7.4 from AWS to Google Cloud, Google Cloud agent will not be installed automatically.

Workaround: Manually remove the AWS agent and install Google Cloud agent

#131532713: After Offline Migration of Windows 2003R2, if a NIC is manually deleted, it may be impossible to auto-detect and automatically reinstall it.

Workaround: The VM storage can be attached to a different VM, and the NIC Registry entry could be imported manually using a similar VM as a reference. Contact support for assistance.

#131532666: Linux versions running with kernel version 2.6.32 may experience a kernel panic on ephemeral storage access failures; these are more likely while streaming over iSCSI.

Workaround: Upgrade your kernel. The issue will also reduce in likelihood after Detach.

#131532846: Certain firewalls and anti-viruses may cause Windows VMs to fail when moved to cloud by blocking iSCSI traffic.

Workaround: Disable the affecting service while migrating and reinstall after Detach.

#131532882: In certain cases, initiating Run in Cloud during a Windows update may cause the update to terminate abruptly and cause a failure to boot in the cloud.

Workaround: Allow the system to finish Windows update and/or suspend Windows updates before migrating.

#135664281: When completing or canceling Azure to Google Cloud migration, if Velostrata Management failed to start the importer, Velostrata-created resources may be left in the original instance's resource group.

#133137658: Scenario: No network connection between Migration Manager and VSphere

Customer Impact: RunInCloud task will stay stuck due to failure in call to getReadSessions on VSphere.

Workaround: Fix the network connection. If not, cancel the task and try again.

#135573857 Scenario: When moving a VM back on-prem with "force" flag, failure to consolidate snapshot will cause the VM to remain as managed by Velostrata. RunInCloud on the same VM may fail since it is not allowed on managed VMs.

Workaround: Wait a couple of minutes and try again.

#137082702: In rare cases, the Cancel detach operation succeeds but the VM instance will fail to start.

Workaround: Move the instance back and move it again to the cloud.