[Sheepdog] [PATCH 1/2] deleting data objects of a vdi before deleting the inode

[Christoph Hellwig]

This patch seems to break deletions of volumes if there was any data
in them, e.g.

collie vdi create test 10G
collie vdi write test (...)
collie vdi delete test
collie vdi list
  Name        Id    Size    Used  Shared    Creation time   VDI id  Tag
  test         1  0.0 MB  0.0 MB  0.0 MB 2012-04-27 17:49   7c2b25