[Sheepdog] [PATCH v2]timestamp epoch log

[Liu Yuan]

This patch set timestamps the epoch log, that is supposed to help admins to
get more info about cluster history.

Changes from v2 to v1:
 - remove extra dprintfs when update epoch log

Liu Yuan (3):
      sheep: use update_epoch_log() to write epoch logs
      sheep: timestamp the epoch log
      sheep: rename var ctime to ct

 collie/cluster.c   |   11 +++++---
 include/sheep.h    |    1 +
 sheep/group.c      |    6 +---
 sheep/ops.c        |   10 +++----
 sheep/sheep_priv.h |    1 -
 sheep/store.c      |   74 ++++++++++++++++++++++++++-------------------------
 6 files changed, 51 insertions(+), 52 deletions(-)

Thanks,
Yuan