Comment 4 for bug 1737592

Testing a zfsroot deploy without zfs present, curtin will trigger an install of the full linux-image-generic package during the install deps check.

This produces this output:

[ 7.696444] cloud-init[1214]: Cloud-init v. 17.1 running 'modules:config' at Thu, 21 Dec 2017 21:39:54 +0000. Up 6.72 seconds.
[^[[0;32m OK ^[[0m] Started Apply the settings specified in cloud-config.
         Starting Execute cloud user/final scripts...
[ 8.616435] cloud-init[1435]: Hit:1 http://archive.ubuntu.com/ubuntu xenial InRelease
[ 8.672908] cloud-init[1435]: Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
[ 8.674883] cloud-init[1435]: Get:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
[ 8.928164] cloud-init[1435]: Get:4 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
[ 8.995416] cloud-init[1435]: Get:5 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages [7532 kB]
[ 9.080891] cloud-init[1435]: Get:6 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages [409 kB]
[ 9.283115] cloud-init[1435]: Get:7 http://security.ubuntu.com/ubuntu xenial-security/universe amd64 Packages [191 kB]
[ 9.350155] cloud-init[1435]: Get:8 http://security.ubuntu.com/ubuntu xenial-security/multiverse amd64 Packages [3208 B]
[ 9.442908] cloud-init[1435]: Get:9 http://archive.ubuntu.com/ubuntu xenial/multiverse amd64 Packages [144 kB]
[ 9.516022] cloud-init[1435]: Get:10 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages [683 kB]
[ 9.579850] cloud-init[1435]: Get:11 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages [566 kB]
[ 9.652460] cloud-init[1435]: Get:12 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse amd64 Packages [16.2 kB]
[ 9.716868] cloud-init[1435]: Get:13 http://archive.ubuntu.com/ubuntu xenial-backports/main amd64 Packages [4836 B]
[ 9.780898] cloud-init[1435]: Get:14 http://archive.ubuntu.com/ubuntu xenial-backports/universe amd64 Packages [6612 B]
[ 10.718880] cloud-init[1435]: Fetched 9861 kB in 2s (4415 kB/s)
[ 11.385174] cloud-init[1435]: Reading package lists...
[ 11.449013] cloud-init[1435]: Reading package lists...
[ 11.561550] cloud-init[1435]: Building dependency tree...
[ 11.563580] cloud-init[1435]: Reading state information...
[ 11.664585] cloud-init[1435]: The following package was automatically installed and is no longer required:
[ 11.666506] cloud-init[1435]: libfreetype6
[ 11.667620] cloud-init[1435]: Use 'apt autoremove' to remove it.
[ 11.669035] cloud-init[1435]: The following additional packages will be installed:
[ 11.670778] cloud-init[1435]: libnvpair1linux libuutil1linux libzfs2linux libzpool2linux zfs-doc
[ 11.672519] cloud-init[1435]: Suggested packages:
[ 11.673680] cloud-init[1435]: fdutils linux-doc-4.4.0 | linux-source-4.4.0 linux-tools
[ 11.675245] cloud-init[1435]: linux-headers-4.4.0-103-generic samba-common-bin nfs-kernel-server
[ 11.676981] cloud-init[1435]: zfs-initramfs
[ 11.678095] cloud-init[1435]: Recommended packages:
[ 11.679275] cloud-init[1435]: grub-pc | grub-efi-amd64 | grub-efi-ia32 | grub | lilo zfs-zed
[ 11.680847] cloud-init[1435]: The following NEW packages will be installed:
[ 11.681995] cloud-init[1435]: libnvpair1linux libuutil1linux libzfs2linux libzpool2linux
[ 11.683237] cloud-init[1435]: linux-image-4.4.0-103-generic zfs-doc zfsutils-linux
[ 11.811514] cloud-init[1435]: 0 upgraded, 7 newly installed, 0 to remove and 8 not upgraded.
[ 11.813829] cloud-init[1435]: Need to get 22.8 MB of archives.
[ 11.815138] cloud-init[1435]: After this operation, 69.7 MB of additional disk space will be used.

Using an initrd produced from this branch, the same dep check path shows:

[ 8.078240] cloud-init[1225]: Cloud-init v. 17.1 running 'modules:config' at Thu, 21 Dec 2017 21:06:17 +0000. Up 7.10 seconds.
[^[[0;32m OK ^[[0m] Started Apply the settings specified in cloud-config.
         Starting Execute cloud user/final scripts...
[ 9.099855] cloud-init[1430]: Hit:1 http://archive.ubuntu.com/ubuntu xenial InRelease
[ 9.102304] cloud-init[1430]: Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
[ 9.156567] cloud-init[1430]: Get:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
[ 9.412186] cloud-init[1430]: Get:4 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
[ 9.443453] cloud-init[1430]: Get:5 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages [409 kB]
[ 9.483278] cloud-init[1430]: Get:6 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages [7532 kB]
[ 9.637120] cloud-init[1430]: Get:7 http://security.ubuntu.com/ubuntu xenial-security/universe amd64 Packages [191 kB]
[ 9.701364] cloud-init[1430]: Get:8 http://security.ubuntu.com/ubuntu xenial-security/multiverse amd64 Packages [3208 B]
[ 9.886424] cloud-init[1430]: Get:9 http://archive.ubuntu.com/ubuntu xenial/multiverse amd64 Packages [144 kB]
[ 9.954894] cloud-init[1430]: Get:10 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages [683 kB]
[ 10.035288] cloud-init[1430]: Get:11 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages [566 kB]
[ 10.113280] cloud-init[1430]: Get:12 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse amd64 Packages [16.2 kB]
[ 10.180125] cloud-init[1430]: Get:13 http://archive.ubuntu.com/ubuntu xenial-backports/main amd64 Packages [4836 B]
[ 10.247432] cloud-init[1430]: Get:14 http://archive.ubuntu.com/ubuntu xenial-backports/universe amd64 Packages [6612 B]
[ 11.176975] cloud-init[1430]: Fetched 9861 kB in 2s (4469 kB/s)
[ 11.859076] cloud-init[1430]: Reading package lists...
[ 11.923092] cloud-init[1430]: Reading package lists...
[ 12.080138] cloud-init[1430]: Building dependency tree...
[ 12.081346] cloud-init[1430]: Reading state information...
[ 12.192458] cloud-init[1430]: The following package was automatically installed and is no longer required:
[ 12.193183] cloud-init[1430]: libfreetype6
[ 12.193445] cloud-init[1430]: Use 'apt autoremove' to remove it.
[ 12.194023] cloud-init[1430]: The following additional packages will be installed:
[ 12.194523] cloud-init[1430]: libnvpair1linux libuutil1linux libzfs2linux libzpool2linux zfs-doc
[ 12.195359] cloud-init[1430]: Suggested packages:
[ 12.195559] cloud-init[1430]: samba-common-bin nfs-kernel-server zfs-initramfs
[ 12.195889] cloud-init[1430]: Recommended packages:
[ 12.196362] cloud-init[1430]: zfs-dkms zfs-zed
[ 12.197353] cloud-init[1430]: The following NEW packages will be installed:
[ 12.197900] cloud-init[1430]: libnvpair1linux libuutil1linux libzfs2linux libzpool2linux zfs-doc
[ 12.198154] cloud-init[1430]: zfsutils-linux
[ 12.345896] cloud-init[1430]: 0 upgraded, 6 newly installed, 0 to remove and 8 not upgraded.
[ 12.346565] cloud-init[1430]: Need to get 867 kB of archives.
[ 12.347059] cloud-init[1430]: After this operation, 2775 kB of additional disk space will be used.

The linux-image-generic package is no longer requested due to the presence of the 'zfs' module in the initramfs.