[sheepdog] [PATCH v3 0/4] object list cache reclaim after deleting a VDI

[levin li]

From: levin li <xingke.lwp at taobao.com>

v2 --- > v3:
1. add some comments
2. rename objlist_cache_delete to objlist_cache_cleanup

v1 --- > v2:
1. rename 'reclaim' to 'deletion'
2. add some comments

Object list cache does not take too much memory, so reclaiming seems
unnecessary, but there's a problem:

Objects belonging to a deleted VDI does not exist any more, but the
associated entries still stay in the cache list, so if a recovery
happens, sheep would try to recovery these objects and of cause this
would cause many object recovery failure, and waste resource.


levin li (4):
  sheep: notify VDI deletion to all nodes when deleting a VDI
  object list cache: put all the cache entry into a list
  object list cache: reclaim object list cache when receiving a
    deletion event.
  farm: comment why we can't remove objlist entry while deleting object

 include/internal_proto.h  |    1 +
 sheep/farm/trunk.c        |   56 ++++++++++++++++++++++------------
 sheep/object_list_cache.c |   74 +++++++++++++++++++++++++++++++++++++++++++--
 sheep/ops.c               |   14 +++++++++
 sheep/sheep_priv.h        |    2 ++
 sheep/vdi.c               |   52 +++++++++++++++++++++++++++++--
 6 files changed, 173 insertions(+), 26 deletions(-)

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1.7.10