1. 28 Jun, 2017 16 commits
  2. 27 Jun, 2017 22 commits
  3. 26 Jun, 2017 2 commits
    • Javier González's avatar
      lightnvm: pblk: fail gracefully on irrec. error · 588726d3
      Javier González authored
      Due to user writes being decoupled from media writes because of the need
      of an intermediate write buffer, irrecoverable media write errors lead
      to pblk stalling; user writes fill up the buffer and end up in an
      infinite retry loop.
      
      In order to let user writes fail gracefully, it is necessary for pblk to
      keep track of its own internal state and prevent further writes from
      being placed into the write buffer.
      
      This patch implements a state machine to keep track of internal errors
      and, in case of failure, fail further user writes in an standard way.
      Depending on the type of error, pblk will do its best to persist
      buffered writes (which are already acknowledged) and close down on a
      graceful manner. This way, data might be recovered by re-instantiating
      pblk. Such state machine paves out the way for a state-based FTL log.
      Signed-off-by: default avatarJavier González <javier@cnexlabs.com>
      Signed-off-by: default avatarMatias Bjørling <matias@cnexlabs.com>
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      588726d3
    • Javier González's avatar
      lightnvm: pblk: set mempool and workqueue params. · ef576494
      Javier González authored
      Make constants to define sizes for internal mempools and workqueues. In
      this process, adjust the values to be more meaningful given the internal
      constrains of the FTL. In order to do this for workqueues, separate the
      current auxiliary workqueue into two dedicated workqueues to manage
      lines being closed and bad blocks.
      Signed-off-by: default avatarJavier González <javier@cnexlabs.com>
      Signed-off-by: default avatarMatias Bjørling <matias@cnexlabs.com>
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      ef576494