[SRU Justification]
[Explanation] SRU for 1292648 added the ability Cloud-init to format ephemeral devices when a new ephemeral device was put into place. The backport used util.* instead of futil.*.
[IMPACT] Cloud-init stack traces when attempting unmount a device that is not mounted
Cloud-init tries to unmount the default ephemeral disk and uses "try/except" method. Since the wrong util is used, it will stack trace, preventing users from provisioning on Windows Azure.
[TEST-CASE #1] Scratch Boot
1. Build new image from scratch
2. Boot, it should work with ephemeral0 mounted
[TEST-CASE #2] Replace ephemeral0
1. Using test-case #1 instance, remove /dev/sdb1 from /etc/fstab
2. Run "wipefs --all /dev/sdb1"; reboot; device should not be mounted nor should it appear in /etc/fstab
3. Run "mkfs.ext4 /dev/sdb1"; reboot; device should not be mounted nor should it appear in /etc/fstab
4. Run "mkfs.ntfs -L 'Temporary Storage' -f /dev/sdb1 && mount /dev/sdb1 /mnt && touch /mnt/test"; reboot; device should not be mounted nor should it appear in /etc/fstab
5. Run "mount /dev/sdb1 /mnt && rm /mnt/test"; reboot; /dev/sdb1 should be mounted w/ ext4 fs and on /mnt
[TEST-CASE #3] Re-bundle Image
1. Build new image from scratch
2. Boot
3. Capture VM
4. Boot Captured VM, it should have ephemeral0 mounted
Latest Cloud-init on Windows Azure fails to provision on Windows Azure due to incorrect import.
2014-04-03 21:53:24,330 - __init__.py[WARNING]: get_data of DataSourceAzureNet raised 'module' object has no attribute 'ProcessExecutionError'
2014-04-03 21:53:24,374 - util.py[DEBUG]: Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/cloudinit/__init__.py", line 215, in get_data_source
if s.get_data():
File "/usr/lib/python2.7/dist-packages/cloudinit/DataSourceAzure.py", line 215, in get_data
cc_modules_override = support_new_ephemeral(self.sys_cfg)
File "/usr/lib/python2.7/dist-packages/cloudinit/DataSourceAzure.py", line 288, in support_new_ephemeral
except util.ProcessExecutionError as e:
AttributeError: 'module' object has no attribute 'ProcessExecutionError'
2014-04-03 21:53:24,374 - __init__.py[DEBUG]: Did not find data source. searched classes: ['DataSourceAzureNet']
(END)
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