[Bug 1765378] [NEW] 18.04 installer create a swapfile on a btrfs filesystem

[Marc Pignat]

Public bug reported:

When installing ubuntu 18.04 (tested with the minimal install cd), and
selecting a root filesystem on btrfs without swap partition, the creates
a swapfile, but swapfiles can't be used on btrfs (see
https://btrfs.wiki.kernel.org/index.php/FAQ#Does_btrfs_support_swap_files.3F).

The installer should no create this file and add should not add it to
/etc/fsab

** Affects: debian-installer (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  When installing ubuntu 18.04 (tested with the minimal install cd), and
  selecting a root filesystem on btrfs without swap partition, the creates
- a swapfile, but the swapfile can't be used on btrfs (see
+ a swapfile, but swapfiles can't be used on btrfs (see
  https://btrfs.wiki.kernel.org/index.php/FAQ#Does_btrfs_support_swap_files.3F).
  
- The installer should no create this file and add it to /etc/fsab
+ The installer should no create this file and add should not add it to
+ /etc/fsab

** Summary changed:

- 18.04 create a swapfile over a btrfs filesystem
+ 18.04 installer create a swapfile on a btrfs filesystem

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https://bugs.launchpad.net/bugs/1765378

Title:
  18.04 installer create a swapfile on a btrfs filesystem

Status in debian-installer package in Ubuntu:
  New

Bug description:
  When installing ubuntu 18.04 (tested with the minimal install cd), and
  selecting a root filesystem on btrfs without swap partition, the
  creates a swapfile, but swapfiles can't be used on btrfs (see
  https://btrfs.wiki.kernel.org/index.php/FAQ#Does_btrfs_support_swap_files.3F).

  The installer should no create this file and add should not add it to
  /etc/fsab

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