def task(ctx, config): """ Prepare MDS cluster for upgrade. This task reduces ranks to 1 and stops all standbys. """ if config is None: config = {} assert isinstance(config, dict), \ 'snap-upgrade task only accepts a dict for configuration' fs = Filesystem(ctx) status = fs.getinfo() fs.set_max_mds(1) fs.reach_max_mds() # Stop standbys now to minimize time rank 0 is down in subsequent: # tasks: # - ceph.stop: [mds.*] rank0 = fs.get_rank(rank=0, status=status) for daemon in ctx.daemons.iter_daemons_of_role('mds', fs.mon_manager.cluster): if rank0['name'] != daemon.id_: daemon.stop() for i in range(1, 10): time.sleep(5) # time for FSMap to update status = fs.getinfo() if len(list(status.get_standbys())) == 0: break assert (len(list(status.get_standbys())) == 0)
def task(ctx, config): """ Prepare MDS cluster for upgrade. This task reduces ranks to 1 and stops all standbys. """ if config is None: config = {} assert isinstance(config, dict), \ 'snap-upgrade task only accepts a dict for configuration' fs = Filesystem(ctx) fs.getinfo() # load name fs.set_allow_standby_replay(False) fs.set_max_mds(1) fs.reach_max_mds()