[Sheepdog] [PATCH v2] add manual recover capability to sheepdog

[Liu Yuan]

This patch set add manual recover capability to sheepdog, which is supposed
to manually recover the cluster when the cluster can not automatically recover
itself.

Changes v2 to v1:
 - address Kazum's comment.
  - add a warning message and force option.
  - remove extra comma.
 - rebased on the devel branch

Liu Yuan (3):
      collie: add manual recover subcommand for cluster
      sheep: export update_epoch_log()
      sheep: add SD_OP_RECOVER operation

 collie/cluster.c         |   64 ++++++++++++++++++++++++++++++++++++++++++++++
 collie/collie.c          |    1 +
 include/sheep.h          |    2 +
 include/sheepdog_proto.h |    1 +
 sheep/group.c            |   13 ---------
 sheep/ops.c              |   55 +++++++++++++++++++++++++++++++++++++++
 sheep/sheep_priv.h       |    1 +
 sheep/store.c            |   14 ++++++++++
 8 files changed, 138 insertions(+), 13 deletions(-)

Thanks,
Yuan