FailedAttachVolume error appears

If you are performing a migration using Anthos clusters on AWS to perform the migration, you might see the FailedAttachVolume error in the migration status or logs with the accompanying message of:

"The encrypted volume was unable to access the KMS master key"

This error means that your AWS VM uses an encrypted disk and you have not configured access correctly. See Prerequisites for migrating Linux VMs using AWS processing clusters for more.