[Bug 1843768] Re: [FFe] Ubiquity with zfs install option

[Matthew Paul Thomas]

Unfortunately this layout is highly misleading.

It’s misleading for the “Encrypt” and “Use LVM” checkboxes to be aligned
with the radio buttons above it. That suggests that they are independent
of the radio buttons. And it suggests that the radio button group has
finished. Neither is the case. This can be fixed by indenting those two
options so that they are aligned with the label of the “Replace Windows
with Ubuntu” option that they depend on.

Less importantly, it’s misleading to have *more* space between “Replace
Windows with Ubuntu” and the two options that actually depend on it,
than between it and the “Install Ubuntu alongside Windows” option that
it’s exclusive with. The simplest fix is for the spacing to be the same.

Finally, it’s misleading for any options to come after “Something else”.
The word “else” refers to things that come before it. So “Something
else” should always be the last option.

Fixing those three problems would have a bonus benefit that neither of
the separators would be needed any more.

If it’s also possible to change the wording at this late stage, please
stop using the phrase “the new installation” three times. Delete both
occurrences of “with the new installation”.

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https://bugs.launchpad.net/bugs/1843768

Title:
  [FFe] Ubiquity with zfs install option

Status in ubiquity package in Ubuntu:
  New
Status in ubuntu-meta package in Ubuntu:
  New

Bug description:
  Part of the 19.10 feature announcement is zfs experimental support in
  the installer (https://ubuntu.com/blog/enhancing-our-zfs-support-on-
  ubuntu-19-10-an-introduction). We modified ubiquity to present an
  “EXPERIMENTAL” (with warning) ZSYS install option. This option is only
  visible is zfsutils-linux is installed on the system. So, it won't be
  available for derivatives that use ubiquity but do not seed zfsutils-
  linux.

  Update as of 20/09/2019: the plan is to not seed zsys (security review
  will take a while), but to only seed zfsutils-linux. People can then
  opt-in to zsys which should be available by default next cycle.

  This option takes an entire disk and have a fix set of dataset
  installed. There is no support but we need this to make an official
  install option for the next LTS.

  The patch has been created to be as minimal as possible. Partman does
  a full disk partitioning, and then the script zsys-setup the first
  non-ESP partition and replaces with zfs pools.

  4 partitions are created:
  1. if GPT partitioning: ESP partition. This one is done by partman directly.
  2. bpool (for boot), pool with older zfs compatible version to be readable by grub)
  3. rpool (for / and userdataset)
  4. /boot/grub (ext4) to contain a single grub (NOTE: this could be later on moved to the ESP)

  Additionaly if a swap file has been created by ubiquity, it is
  recreated as a ZFS volume. If the script fails to execute, the final
  installation is an ext4 installation on entire disk.

  Note that the implementation is slightly different from the
  specification due to a difficult cohabitation with partman in the
  custom partitioning page.

  Please find attached the MP on ubiquity as well as the package build
  log.

  https://launchpadlibrarian.net/442036321/buildlog_ubuntu-eoan-
  amd64.ubiquity_19.10.10~ppa1_BUILDING.txt.gz

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