[Bug 1883686] Re: zfs should enable autotrim

[Jean-Baptiste Lallement]

** Changed in: ubiquity (Ubuntu)
       Status: New => Fix Released

** Changed in: ubiquity (Ubuntu)
   Importance: Undecided => Low

** Also affects: ubiquity (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Changed in: ubiquity (Ubuntu Focal)
       Status: New => Triaged

** Changed in: ubiquity (Ubuntu Focal)
   Importance: Undecided => Low

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https://bugs.launchpad.net/bugs/1883686

Title:
  zfs should enable autotrim

Status in ubiquity package in Ubuntu:
  Fix Released
Status in ubiquity source package in Focal:
  Triaged

Bug description:
  [Impact]

   * Ubuntu enables automatic TRIM / DISCARD on all filesystems that
  support it, such that on SSD-like storage devices the performance over
  time is improved. ZFS, as setup by ubiquity, did not used to enable
  autotrim option. But it should have it enabled.

  [Test Case]

   * Complete install using zfs
   * Check that the zfs pools have autotrim feature enabled

  [Regression Potential]

   * When autotrim is in progress, i/o performance may be observed as
  stalling. However, periodic trim outweighs the benefits. Advanced
  operators may choose to disable autotrim, and execute it manually
  during regularly scheduled maintenance windows.

  [Other Info]
   
   * Shipped in groovy already

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