[Bug 978032] Re: partitioning step doesn't have "discard" as a selectable mount option

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** Branch linked: lp:~ubuntu-installer/ubiquity/precise-proposed

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https://bugs.launchpad.net/bugs/978032

Title:
  partitioning step doesn't have "discard" as a selectable mount option

Status in “partman-basicfilesystems” package in Ubuntu:
  Fix Released
Status in “partman-btrfs” package in Ubuntu:
  Fix Released
Status in “partman-ext3” package in Ubuntu:
  Fix Released
Status in “ubiquity” package in Ubuntu:
  Fix Released
Status in “partman-basicfilesystems” source package in Precise:
  Fix Committed
Status in “partman-btrfs” source package in Precise:
  Fix Committed
Status in “partman-ext3” source package in Precise:
  Fix Committed
Status in “ubiquity” source package in Precise:
  In Progress
Status in “partman-ext3” package in Debian:
  Fix Released

Bug description:
  SRU justification:
  [Impact] The installer does not support selecting some commonly-used mount options for common file systems.  While this is technically a feature, the fix consists of adding lines to a plain text file, and it's cumbersome for users to work around otherwise; I'd like to make the trivial changes to precise to add these.
  [Test case] Confirm that the installer permits selecting "discard" for ext4, fat16, fat32, and btrfs.  (Use apt-setup/proposed=true while this change is still in precise-proposed.)
  [Regression potential] Confirming that installation otherwise still works should be sufficient.

  Original report follows:
  Doing a clean install of Ubuntu server on a machine with an SSD. I am led to believe that in my fstab I should add the mount option "discard" to enable trim support. During the partitioning step I manually configured my partitions and selected "mount options" but 'discard' was not listed. I will now have to manually edit my fstab to add this in. Would it not be prudent to have this as a selectable option in d-i for server/alternate images?

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