05 May, 2016

1 commit

• ab5a98b13   md-cluster: change array_sectors and update size are not supported ... Browse Code »

  Currently, some features are not supported yet,
  such as change array_sectors and update size, so
  return EINVAL for them and listed it in document.

  Reviewed-by: NeilBrown
  Signed-off-by: Guoqing Jiang
  Signed-off-by: Shaohua Li

  Guoqing Jiang

  2016-05-05 03:39:35 +0800  

06 Jan, 2016

1 commit

• d323ef0f1   md-cluster: update the documentation ... Browse Code »

  Update design documentation based on recent development.
  original version comes from Neil.

  Signed-off-by: Goldwyn Rodrigues
  Signed-off-by: Guoqing Jiang
  Signed-off-by: NeilBrown

  Guoqing Jiang

  2016-01-06 08:39:06 +0800  

01 Sep, 2015

1 commit

• 66099bb0e   md-cluster: fix deadlock issue on message lock ... Browse Code »

  There is problem with previous communication mechanism, and we got below
  deadlock scenario with cluster which has 3 nodes.

  Sender Receiver Receiver

  token(EX)
  message(EX)
  writes message
  downconverts message(CR)
  requests ack(EX)
  get message(CR) gets message(CR)
  reads message reads message
  requests EX on message requests EX on message

  To fix this problem, we do the following changes:

  1. the sender downconverts MESSAGE to CW rather than CR.
  2. and the receiver request PR lock not EX lock on message.

  And in case we failed to down-convert EX to CW on message, it is better to
  unlock message otherthan still hold the lock.

  Reviewed-by: Goldwyn Rodrigues
  Signed-off-by: Lidong Zhong
  Signed-off-by: Guoqing Jiang
  Signed-off-by: NeilBrown

  Guoqing Jiang

  2015-09-01 01:41:41 +0800  

23 Feb, 2015

1 commit

• b8d834488   md-cluster: Design Documentation ... Browse Code »

  Signed-off-by: Goldwyn Rodrigues

  Goldwyn Rodrigues

  2015-02-23 21:16:46 +0800