lost connectivity to a node when using fastpath-installer with precise+hwe-s

After changing "/etc/maas/preseeds/curtin_userdata" to use default archive not ports.ubuntu.com for hwe-s, `juju add-machine` succeeded.

=== modified file 'maas/preseeds/curtin_userdata'
--- maas/preseeds/curtin_userdata 2014-04-19 18:37:53 +0000
+++ maas/preseeds/curtin_userdata 2014-04-19 20:12:27 +0000
@@ -28,7 +28,7 @@
 power_state:
   mode: reboot

-{{if node.architecture in {'i386/generic', 'amd64/generic'} }}
+{{if node.architecture in {'i386/generic', 'amd64/generic', 'amd64/hwe-s'} }}
 apt_mirrors:
   ubuntu_archive: http://{{main_archive_hostname}}/{{main_archive_directory}}
   ubuntu_security: http://{{main_archive_hostname}}/{{main_archive_directory}}

The kernel was still 3.2 not hwe-s though.

d-i case was filed as Bug #1310082.

From the log of curtin manually kicked inside maas node, curtin is trying to install lts-saucy but fails.
====
Tried to install kernel linux-generic-lts-saucy but package not found.
====

If I manually put the content below in /etc/maas/preseeds/curtin_userdata, curtin installs lts-saucy kernel. However curtin seems to have implementation of auto-detect feature above. Somehow it does not work.
====
kernel:
  package: linux-generic-lts-saucy
====

The reason auto-installation lts-saucy does not work in my environment was that the result of "in_chroot(['apt-cache', 'search', package], capture=True)" was empty. i.e. "apt-cache search linux-generic-lts-saucy" returns empty result.

To put `apt-get update` before the line works for me as a workaround (apt-get update runs twice before and after `apt-cache search`).

I'm not sure this is a issue in curtin or in maas tarball image.

--- /usr/lib/python2.7/dist-packages/curtin/commands/curthooks.py.orig 2014-04-21 03:02:52.271682540 +0900
+++ /usr/lib/python2.7/dist-packages/curtin/commands/curthooks.py 2014-04-21 03:32:08.754944407 +0900
@@ -170,6 +170,8 @@

         package = "linux-{flavor}{map_suffix}".format(
             flavor=flavor, map_suffix=map_suffix)
+ # make sure package cache is updated
+ in_chroot(['apt-get', 'update', '--quiet'])
         out, _ = in_chroot(['apt-cache', 'search', package], capture=True)
         if (len(out.strip()) > 0 and
                 not util.has_pkg_installed(package, target)):

I am attaching a fix for the part of the problem that's in maas/preseeds/curtin_userdata, in the maas source tree. This won't be enough to fix the whole problem, so I am not marking the branch as “fixing” this bug.

Can't we do this sanely instead of making the intended-to-be-user-editable template file have such madness as :
  {{if node.split_arch()[0] in {'i386', 'amd64'} }}

Why not make 'arch' actually mean 'arch' and 'subarch' mean 'subarch' as variables available to the template.

in response to comment 5, i'm not sure why the cache in the image wouldn't have had either been updated or have had sane values built in. that could be an image-build thing.

Scott, is this a Curtin bug as per comment 6? I just verified that it's broken - the installer comes up with the hwe-s kernel but installs the release series one.

This bug was fixed in the package maas - 1.5+bzr2267-0ubuntu1

---------------
maas (1.5+bzr2267-0ubuntu1) utopic; urgency=medium

  * New upstream bugfix release. Fixes:
    - Hardware Enablement for Cisco B-Series. (LP: #1300476)
    - Allow AMT power type to specify IP Address. (LP: #1308772)
    - Spurious failure when starting and creating lock files. (LP: 1308069)
    - Fix regression introduced by a security fix (LP: #1311433, LP: #1311433)
    - Fix usage of hardware enablement kernels by fixing the preseeds
      (LP: #1310082, LP: #1310076, LP: #1310082)
    - Fix parallel juju deployments. (LP: #1314409)
    - Clear distro_series when stopping node from WebUI (LP: #1316396)
    - Fix click hijacking (LP: #1298784)
    - Fix blocking API client when deleting a resource (LP: #1313556)
    - Do not import Trusty RC images by default (LP: #1311151)
 -- Andres Rodriguez <email address hidden> Tue, 15 Apr 2014 14:41:32 -0400

Note that only the MAAS part is fixed, Curtin still needs a fix.

Hello Nobuto, or anyone else affected,

Accepted maas into trusty-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/maas/1.5.1+bzr2269-0ubuntu0.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

This bug was fixed in the package maas - 1.5.1+bzr2269-0ubuntu0.1

---------------
maas (1.5.1+bzr2269-0ubuntu0.1) trusty; urgency=medium

  * Stable Release Update (LP: #1317601):
    - Hardware Enablement for Cisco B-Series. (LP: #1300476)
    - Allow AMT power type to specify IP Address. (LP: #1308772)
    - Spurious failure when starting and creating lock files. (LP: 1308069)
    - Fix usage of hardware enablement kernels by fixing the preseeds
      (LP: #1310082, LP: #1310076, LP: #1310082)
    - Fix parallel juju deployments. (LP: #1314409)
    - Clear distro_series when stopping node from WebUI (LP: #1316396)
    - Fix click hijacking (LP: #1298784)
    - Fix blocking API client when deleting a resource (LP: #1313556)
    - Do not import Trusty RC images by default (LP: #1311151)
    - debian/control: Add missing dep on python-crochet for
      python-maas-provisioningserver (LP: #1311765)
 -- Andres Rodriguez <email address hidden> Fri, 09 May 2014 22:35:43 -0500

The verification of the Stable Release Update for maas has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regresssions.