This patch implements user specified cache flushing for cache tiering. In many use cases, the user traffic is high in only some fixed time, fox example, work hour. In those cases, it is desirable that the flushing job could be scheduled in the idle time, and do as much as possible, to reduce the bandwidth contention with user traffic. Signed-off-by: Mingxin Liu <mingxinliu@xxxxxxxxxxxxxxx> Reviewed-by: Li Wang <liwang@xxxxxxxxxxxxxxx> Suggested-by: Xinze Chi <xmdxcxz@xxxxxxxxx> The codes: https://github.com/ceph/ceph/pull/5362 Mingxin Liu (5): osd: parse and queue user specified flushing osd: traverse PGs and reset agent state osd: set the default value of agent_timer's "safe_callbacks" be false osd: add scheduled flushing work in agent logic osd: handle configuration changes for user specified flushing src/common/config_opts.h | 2 + src/osd/OSD.cc | 128 ++++++++++++++++++++++++++++++++++++++++++++++- src/osd/OSD.h | 12 +++-- src/osd/PG.h | 1 + src/osd/ReplicatedPG.cc | 3 +- 5 files changed, 141 insertions(+), 5 deletions(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
