[sheepdog] [sheepdog/sheepdog] d46b6a: sheep: avoid creating a checkpoint of vdi state if...

[Hitoshi Mitake]

  Branch: refs/heads/fixes-164-2
  Home:   https://github.com/sheepdog/sheepdog
  Commit: d46b6a5870955e34366baec4b226070c51860ef9
      https://github.com/sheepdog/sheepdog/commit/d46b6a5870955e34366baec4b226070c51860ef9
  Author: Hitoshi Mitake <mitake.hitoshi at lab.ntt.co.jp>
  Date:   2015-09-22 (Tue, 22 Sep 2015)

  Changed paths:
    M sheep/group.c

  Log Message:
  -----------
  sheep: avoid creating a checkpoint of vdi state if it isn't necessary

If a cluster isn't formatted with -l option, creating a checkpoint of
vdi state isn't necessary.

Signed-off-by: Hitoshi Mitake <mitake.hitoshi at lab.ntt.co.jp>