11 Nov, 2014

1 commit

• 1bad9bc4e   dm cache: revert "remove remainder of distinct discard block size" ... Browse Code »

  This reverts commit 64ab346a360a4b15c28fb8531918d4a01f4eabd9 because we
  actually do want to allow the discard blocksize to be larger than the
  cache blocksize. Further dm-cache discard changes will make this
  possible.

  Signed-off-by: Joe Thornber
  Signed-off-by: Mike Snitzer

  Joe Thornber

  2014-11-11 04:25:30 +0800  

28 Mar, 2014

1 commit

• 64ab346a3   dm cache: remove remainder of distinct discard block size ... Browse Code »

  Discard block size not being equal to cache block size causes data
  corruption by erroneously avoiding migrations in issue_copy() because
  the discard state is being cleared for a group of cache blocks when it
  should not.

  Completely remove all code that enabled a distinction between the
  cache block size and discard block size.

  Signed-off-by: Heinz Mauelshagen
  Signed-off-by: Mike Snitzer

  Heinz Mauelshagen

  2014-03-28 04:56:23 +0800  

02 Mar, 2013

1 commit

• c6b4fcbad   dm: add cache target ... Browse Code »

  Add a target that allows a fast device such as an SSD to be used as a
  cache for a slower device such as a disk.

  A plug-in architecture was chosen so that the decisions about which data
  to migrate and when are delegated to interchangeable tunable policy
  modules. The first general purpose module we have developed, called
  "mq" (multiqueue), follows in the next patch. Other modules are
  under development.

  Signed-off-by: Joe Thornber
  Signed-off-by: Heinz Mauelshagen
  Signed-off-by: Mike Snitzer
  Signed-off-by: Alasdair G Kergon

  Joe Thornber

  2013-03-02 06:45:51 +0800