** Description changed: + SRU Justification + + [IMPACT] Users on Windows Azure are guaranteed to have the ephemeral + device as ext4 for the first boot. Subsequent boots may result in fuse + mounted NTFS file system. + + [TEST CASE] + Defined in comment 3. + + [Regression Potential] Low. This change is scope only to the Windows Azure datasource and the behavior complies with expected behavior of Windows Azure: the ephemeral disk is not durable between boots. From Microsoft documentation: + > Because data on a resource disk may not be durable across reboots, it is often used by + > applications and processes running in the virtual machine for transient and temporary + > storage of data. It is also used to store page or swap files for the operating system. + (See http://www.windowsazure.com/en-us/documentation/articles/storage-windows-attach-disk/) + + Even so, the change to Cloud-init is scope to only replace the ephemeral + disk when the disk is 1) NTFS; 2) has a label of "Temporary Storage"; + and 3) has no files on it. When the disk matches, cloud-init will turn + the code paths for formating the ephemeral disk for that boot only. + + [ORIGINAL REPORT] + On Windows Azure, the ephemeral disk should be treated as ephemeral per boot, not per instance. Microsoft has informed us that under the following conditions an ephemeral disk may disappear: 1. The user resizes the instance 2. A fault causes the instance to move from one physical host to another 3. A machine is shutdown and then started again Essentially, on Azure, the ephemeral disk is extremely ephemeral. Users who hit any of the above situations are discovering that /mnt is mount with their default NTFS file system. + ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: cloud-init 0.7.5~bzr964-0ubuntu1 [modified: usr/lib/python2.7/dist-packages/cloudinit/config/cc_disk_setup.py usr/lib/python2.7/dist-packages/cloudinit/config/cc_final_message.py usr/lib/python2.7/dist-packages/cloudinit/config/cc_seed_random.py usr/lib/python2.7/dist-packages/cloudinit/sources/DataSourceAzure.py usr/lib/python2.7/dist-packages/cloudinit/sources/DataSourceCloudSigma.py usr/lib/python2.7/dist-packages/cloudinit/sources/DataSourceSmartOS.py] ProcVersionSignature: Ubuntu 3.13.0-17.37-generic 3.13.6 Uname: Linux 3.13.0-17-generic x86_64 ApportVersion: 2.13.3-0ubuntu1 Architecture: amd64 Date: Fri Mar 14 17:53:20 2014 PackageArchitecture: all SourcePackage: cloud-init UpgradeStatus: No upgrade log present (probably fresh install)
** Branch linked: lp:~utlemming/ubuntu/precise/cloud- init/lp-1269626-1292648 ** Branch linked: lp:~utlemming/ubuntu/saucy/cloud- init/lp-1269626-1292648 ** Branch unlinked: lp:~utlemming/cloud-init/disk_setup_always.lp1292648 ** Summary changed: - cloud-init should check/format Azure empheral disks each boot + [SRU] cloud-init should check/format Azure empheral disks each boot -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to cloud-init in Ubuntu. https://bugs.launchpad.net/bugs/1292648 Title: [SRU] cloud-init should check/format Azure empheral disks each boot To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-init/+bug/1292648/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
