** Changed in: cloud-init (Ubuntu)
Status: New => Confirmed
** Changed in: cloud-init (Ubuntu)
Importance: Undecided => Medium
** Also affects: cloud-init
Importance: Undecided
Status: New
** Changed in: cloud-init
Status: New => Confirmed
** Changed in: cloud-init
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/1686514
Title:
Azure: cloud-init does not handle reformatting GPT partition ephemeral
disks
Status in cloud-init:
Confirmed
Status in cloud-init package in Ubuntu:
Confirmed
Bug description:
Some Azure instances such as L32 or G5 have very large ephemeral disks
which are partitioned via GPT vs. smaller ephemeral disks that have
dos disklabels.
At first boot of an instance the ephemeral disk is prepared and
formatted properly. But if the instance is deallocated and then
reallocated (thus receiving a new ephemeral disk) then cloud-init does
not handle reformatting GPT partition ephemeral disks properly.
Therefore /mnt is never mounted again.
Test cases:
1. Deploy an L32(s) VM on Azure
2. Log in and ensure that the ephemeral disk is formatted and mounted to /mnt
3. Via the portal you can "Redeploy" the VM to a new Azure Host (or
alternatively stop and deallocate the VM for some time, and then
restart/reallocate the VM).
Expected Results:
- After reallocation we expect the ephemeral disk to be formatted and
mounted to /mnt.
Actual Results:
- After reallocation /mnt is not mounted and there are errors in the
cloud-init log.
*This was tested on Ubuntu 16.04 - but may affect other releases.
Note: This bug a regression from previous cloud-init releases. GPT
support for Azure ephemeral disk handling was added to cloud-init via
this bug: https://bugs.launchpad.net/ubuntu/+source/cloud-
init/+bug/1422919.
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