Build images on ubuntu 16.04

[andrewjjenkins]

Ubuntu 16.04 behaves slightly differently than 14.04. pvscan will not
activate the /dev/nbd* devices unless told specifically to examine and
activate them using "--cache".

Add some robustness by doing a partprobe after qemu-nbd but before using
the partitions. This helps races (the partprobe happens asynchronously
I think).

[andrewjjenkins]

I created an image using these:

• ubuntu-16.04-server-cloudimg-amd64-20160420.3
• BIGIP-11.6.0.6.0.442.ALL.qcow2.zip

Then I booted it and it "Openstacked" correctly: honored my passwords, SSH keys, MTU, everything.

Here's an excerpt from the console log around the parts I changed:

[  148.498258] cloud-init[1172]: + check_oldfile_full_path
[  148.499838] cloud-init[1172]: + '[' -f BIGIP-11.6.0.6.0.442.qcow2 ']'
[  148.501372] cloud-init[1172]: ++ basename BIGIP-11.6.0.6.0.442.qcow2
[  148.502893] cloud-init[1172]: + ofname=BIGIP-11.6.0.6.0.442.qcow2
[  148.504370] cloud-init[1172]: + '[' -z os_ready-BIGIP-11.6.0.6.0.442.qcow2 ']'
[  148.505155] cloud-init[1172]: + cp BIGIP-11.6.0.6.0.442.qcow2 /home/imageprep/os_ready-BIGIP-11.6.0.6.0.442.qcow2
[  155.116511] cloud-init[1172]: + sleep 2
[  157.156489] cloud-init[1172]: + qemu-nbd -d /dev/nbd0
[  157.302910] cloud-init[1172]: + sleep 2
[  159.304808] cloud-init[1172]: + qemu-nbd --connect=/dev/nbd0 /home/imageprep/os_ready-BIGIP-11.6.0.6.0.442.qcow2
[  159.617027] cloud-init[1172]: + sleep 2
[  161.618746] cloud-init[1172]: + partprobe /dev/nbd0
[  162.478500] cloud-init[1172]: + for part in '${qcow_device}*'
[  162.480443] cloud-init[1172]: + pvscan --cache /dev/nbd0
[  162.841948] cloud-init[1172]: + for part in '${qcow_device}*'
[  162.843782] cloud-init[1172]: + pvscan --cache /dev/nbd0p1
[  162.850781] cloud-init[1172]: + for part in '${qcow_device}*'
[  162.852638] cloud-init[1172]: + pvscan --cache /dev/nbd0p2
[  162.861921] cloud-init[1172]: + for part in '${qcow_device}*'
[  162.863546] cloud-init[1172]: + pvscan --cache /dev/nbd0p3
[  162.867876] cloud-init[1172]: + pvscan
[  162.997557] cloud-init[1172]: + sleep 2
[  164.999400] cloud-init[1172]: + echo 'The following command may cause '\''Can'\''t deactivate'\'' messages.'
[  165.002543] cloud-init[1172]: + echo 'These do not necessarily indicate a problem.'
[  165.004525] cloud-init[1172]: + vgchange -ay
[  165.191810] cloud-init[1172]: + sleep 2
[  167.194623] cloud-init[1172]: + mkdir -p /mnt/bigip-config
[  167.202083] cloud-init[1172]: + '[' -n '' ']'
[  167.202390] cloud-init[1172]: + echo 'Waiting 15 seconds'
[  167.202681] cloud-init[1172]: + sleep 15
[  182.205441] cloud-init[1172]: + umount /mnt/bigip-config
[  182.219304] cloud-init[1172]: umount: /mnt/bigip-config: not mounted
[  182.219789] cloud-init[1172]: + '[' 32 -eq 1 ']'
[  182.220627] cloud-init[1172]: + umount /mnt/bigip-shared
[  182.224402] cloud-init[1172]: umount: /mnt/bigip-shared: mountpoint not found
[  182.224762] cloud-init[1172]: + '[' 32 -eq 1 ']'
[  182.225288] cloud-init[1172]: ++ get_dev set.1._config
[  182.225824] cloud-init[1172]: ++ ls -l /dev/vg-db-hda
[  182.226421] cloud-init[1172]: ++ cut '-d>' -f2
[  182.226631] cloud-init[1172]: ++ grep set.1._config
[  182.227070] cloud-init[1172]: ++ cut -d/ -f2-
[  182.258434] cloud-init[1172]: + mount /dev/dm-6 /mnt/bigip-config
[  182.274943] cloud-init[1172]: + inject_files

[pjbreaux]

Excellent. Good fix. Testing on Ubuntu 14.04.

[pjbreaux]

Does this look sane to you on Ubuntu 14.04. Haven't attempted to boot the image yet.

+ qemu-nbd --connect=/dev/nbd0 /home/imageprep/os_ready-BIGIP-11.6.0.0.0.401.qcow2
+ sleep 2
+ partprobe /dev/nbd0
+ for part in '${qcow_device}*'
+ pvscan --cache /dev/nbd0
  Command failed with status code 5.
+ for part in '${qcow_device}*'
+ pvscan --cache /dev/nbd0p1
  Command failed with status code 5.
+ for part in '${qcow_device}*'
+ pvscan --cache /dev/nbd0p2
  Command failed with status code 5.
+ for part in '${qcow_device}*'
+ pvscan --cache /dev/nbd0p3
  Command failed with status code 5.
+ pvscan

[pjbreaux]

@andrewjjenkins: Check the question above. Thanks.