Ceph-OSD（16版本）

PrimaryLogPG::do_request
  > PrimaryLogPG::do_op
    >> PrimaryLogPG::execute_ctx
       >>> PrimaryLogPG::prepare_transaction
           >>>> PrimaryLogPG::do_osd_ops

       >>> PrimaryLogPG::new_repop    

       >>> PrimaryLogPG::issue_repop
            >>>> PrimaryLogPG::repop_all_committed
            >>>> PGBackend::submit_transaction

       >>> PrimaryLogPG::eval_repop

 

///////////////////

 

fuse_ll_write
  CephFuse->Handle->client->ll_write
     CephFuse->Handle->client->_write
         CephFuse->Handle->client->get_caps
              CephFuse->Handle->client->check_pool_perm
              CephFuse->Handle->client->check_caps
                  // 需要更新 Inode->max_size
                  CephFuse->Handle->client->send_cap
                    CEPH_CAP_OP_UPDATE
                    MClientCaps

----------------------------------------------

 

MDS侧：

MDSRank->locker->handle_client_caps
MDSRank->locker->_do_cap_update
MDSRank->locker->calc_new_max_size
MDSRank->locker->issue_caps

----------------------------------------------
// 分支A：缓存命中 ：Client->objectcacher
Client->objectcacher
ObjectCacher->file_write
ObjectCacher->writex

// 分支B：直接写透
CephFuse->Handle->client->_flush_range
Filer->write_trunc
Filer->objecter->sg_write_trunc
Filer->objecter->write_trunc
Filer->objecter->op_submit
Filer->objecter->_op_submit_with_budget
Filer->objecter->_op_submit

 

/////////////////////

 

PrimaryLogPG->do_op
  PrimaryLogPG->maybe_handle_cache
     PrimaryLogPG->maybe_handle_cache_detail
         PrimaryLogPG->promote_object
         PrimaryLogPG->do_proxy_write