Public bug reported: Attempting to partition a device in AWS using mbr fails when there is an existing filesystem detected. Per smoser this is due to the need to wipefs which cloud-init doesn't currently do.
Cloud-init config: #cloud-config disk_setup: ephemeral1: table_type: mbr layout: true overwrite: true fs_setup: - label: None filesystem: ext4 device: ephemeral1 partition: auto overwrite: true ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: cloud-init 17.1-27-geb292c18-0ubuntu1~16.04.1 ProcVersionSignature: Ubuntu 4.4.0-1041.50-aws 4.4.95 Uname: Linux 4.4.0-1041-aws x86_64 ApportVersion: 2.20.1-0ubuntu2.13 Architecture: amd64 CloudName: Amazon - Ec2 Date: Mon Dec 4 18:29:50 2017 Ec2AMI: ami-ed019997 Ec2AMIManifest: qbis-amis/image-1512159879.manifest.xml Ec2AvailabilityZone: us-east-1b Ec2InstanceType: c3.2xlarge Ec2Kernel: unavailable Ec2Ramdisk: unavailable PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: cloud-init UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: cloud-init (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug ec2-images third-party-packages xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1736215 Title: Partitioning drive with existing partition fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1736215/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs