forbid slave write data if it's syncing data from master
forbid slave write data if it's syncing data from master

lsm/ardb,spitfire2/ardb,placrosse/ardb,lsm/ardb,wfxiang08/ardb,spitfire2/ardb,yinqiwen/ardb,placrosse/ardb,tempbottle/ardb,yinqiwen/ardb,cloudrain21/ardb,cloudrain21/ardb,tempbottle/ardb,wfxiang08/ardb,bssrdf/ardb,bssrdf/ardb