[Bug 864051] Re: TRIM support not enabled for SSDs

[Mark East]

You can detect the disk type from the following file:

/sys/block/sda/queue/rotational

Just cat it. 1 means it's rotational, 0 means it is an SSD. Just change
sda to be the disk you want to inspect. You will also need root
privileges to view the file.

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https://bugs.launchpad.net/bugs/864051

Title:
  TRIM support not enabled for SSDs

Status in “partman-target” package in Ubuntu:
  Confirmed

Bug description:
  When creating the fstab, the discard option is not activated for SSDs
  with TRIM support. But for performance reasons, it would be very
  important to be activated.

  1) lsb_release -rd
  Description:	Ubuntu oneiric (development branch)
  Release:	11.10

  2) apt-cache policy partman-target
  N: Unable to locate package partman-target

  3) What you expected to happen
  Partitions on disk devices with TRIM support entered in fstab with the 'discard' mount option

  4) What happened instead
  Partitions on disk devices are always entered without the 'discard' option in fstab

  I hope this is the right package; I found no other package generating
  the fstab.

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