This patch set introduce a new cluster status into sheepdog, which is supposed
to prevent sheepdog from serving IO when lack of redundant nodes.
Changes from v4 to v5 are:
- rebased on the msater branch
- add get/set_cluster_flags()
- revert hdr flags into uint16_t
- use Macro in set_nohalt()
Changes from v3 to v4 are:
- change hdr flags into uint32_t from uint16_t
Changes from v2 to v3 are:
- add a new flag field in struct cluster_info and NOHALT uses one bit of it.
- use hdr.flags to set the nohalt option in collie.
- add a new epoch_log_read_nr() to return # of the entries instead of bytes.
Changes from v1 to v2 are:
- refactor's get_cluster_status() to prepare the code for change.
- address Kazutaka's comments.
- make cluster 'halt' optionally.
Liu Yuan (7):
sheep: add a helper epoch_log_read_nr()
sheep: refactor get_cluster_status()
sheep: remove wrong 'unknown message' in the log
sheep: introduce SD_STATUS_HALT
sheep: add a helper function to get nr_zones
sheep: add set/get_cluster_status()
sheep: use SD_STATUS_HALT to stop serving IO
collie/cluster.c | 14 +++-
collie/collie.c | 1 +
include/sheep.h | 3 +
include/sheepdog_proto.h | 1 +
sheep/group.c | 228 +++++++++++++++++++++++++++++-----------------
sheep/sheep_priv.h | 7 ++
sheep/store.c | 46 +++++++++
7 files changed, 214 insertions(+), 86 deletions(-)
Thanks,
Yuan
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