[Sheepdog] [PATCH v5]introduce SD_STATUS_HALT to stop serving IO

[MORITA Kazutaka]

At Wed, 19 Oct 2011 18:06:15 +0800,
Liu Yuan wrote:
> 
> This patch set introduce a new cluster status into sheepdog, which is supposed
> to prevent sheepdog from serving IO when lack of redundant nodes.

Applied, thanks!

Kazutaka

> 
> 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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