tree 6cd8d8434ea3d4495df9f85410518cea20cc6db6
parent 73c5f1a1fe462bab551bae0d3d6aca027a40a3f7
author buyingyi <buyingyi@gmail.com> 1378421699 -0700
committer buyingyi <buyingyi@gmail.com> 1378421699 -0700

fix fault-tolerance and error reporting to handle disk failures