Two disks are created when (even one) -g flag is used to run provisioning tests with the latest (utah-common_0.12.1ubuntu1~precise1_all.deb)
utah version is used. This causes the min_config saucy desktop jobs to hang at partman since the preseed is not meant to give inputs for two disk configuration in min_config jobs.
I confirm it being a utah regression because I ran a raring image with the current version and the job was mis-behaving the same way as Saucy min_config job does. The raring min_config job used to pass with that image with the older version of utah.
The following is an excerpt from the utah-server-debug.log,
2013-05-08 10:11:52,770 utah-8455-saucy-i386 INFO: Creating disks
2013-05-08 10:11:52,771 utah-8455-saucy-i386 DEBUG: Creating 8G disk using: qemu-img create -f qcow2 /var/lib/utah/vm/utah-8455-saucy-i386/disk0.qcow2 8G
2013-05-08 10:11:52,771 root DEBUG: Running command: qemu-img create -f qcow2 /var/lib/utah/vm/utah-8455-saucy-i386/disk0.qcow2 8G
2013-05-08 10:11:52,771 root DEBUG: Output follows:
2013-05-08 10:11:52,844 root DEBUG: Formatting '/var/lib/utah/vm/utah-8455-saucy-i386/disk0.qcow2', fmt=qcow2 size=8589934592 encryption=off cluster_size=65536
2013-05-08 10:11:52,844 root DEBUG:
2013-05-08 10:11:52,844 root DEBUG: Return code: 0
2013-05-08 10:11:52,845 utah-8455-saucy-i386 DEBUG: Adding disk to list
2013-05-08 10:11:52,845 utah-8455-saucy-i386 DEBUG: Creating 5G disk using: qemu-img create -f qcow2 /var/lib/utah/vm/utah-8455-saucy-i386/disk1.qcow2 5G
2013-05-08 10:11:52,845 root DEBUG: Running command: qemu-img create -f qcow2 /var/lib/utah/vm/utah-8455-saucy-i386/disk1.qcow2 5G
2013-05-08 10:11:52,845 root DEBUG: Output follows:
2013-05-08 10:11:52,920 root DEBUG: Formatting '/var/lib/utah/vm/utah-8455-saucy-i386/disk1.qcow2', fmt=qcow2 size=5368709120 encryption=off cluster_size=65536
2013-05-08 10:11:52,921 root DEBUG:
2013-05-08 10:11:52,921 root DEBUG: Return code: 0
=========================================
This issue is impacting the min-config desktop saucy smoke tests and the impaged jobs are,
https://jenkins.qa.ubuntu.com/view/Saucy/view/Smoke%20Testing/job/saucy-desktop-amd64-smoke-min_config/11/
and
https://jenkins.qa.ubuntu.com/view/Saucy/view/Smoke%20Testing/job/saucy-desktop-i386-smoke-min_config/10/
This appears a regression in utah, possibly on
http://bazaar.launchpad.net/~utah/utah/dev/revision/881#utah/provisioning/vm/vm.py
This is a side effect of using 'append' with a default in argparse:
>>> p = argparse.
>>> p.add_argument(
>>> p.parse_args(['-g', '3'])
Namespace(g=[8, '3'])