def test_ha_remove_extra_disks(controller, replica1, replica2): # NOQA prepare_backup_dir(BACKUP_DIR) open_replica(replica1) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[ common.REPLICA1, ]) assert v.replicaCount == 1 replicas = controller.list_replica() assert len(replicas) == 1 assert replicas[0].mode == "RW" dev = get_blockdev() wasted_data = common.random_string(128) data_offset = 1024 verify_data(dev, data_offset, wasted_data) # now replica1 contains extra data in a snapshot cmd.snapshot_create() common.cleanup_controller(controller) open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[ common.REPLICA2, ]) assert v.replicaCount == 1 replicas = controller.list_replica() assert len(replicas) == 1 assert replicas[0].mode == "RW" dev = get_blockdev() data = common.random_string(128) data_offset = 1024 verify_data(dev, data_offset, data) r = replica1.list_replica()[0] replica1 = replica1.reload(r) print(replica1) cmd.add_replica(common.REPLICA1) verify_data(dev, data_offset, data)
def test_frontend_show(controller, replica1, replica2): # NOQA common.open_replica(replica1) common.open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[ common.REPLICA1, common.REPLICA2 ]) ft = v["frontend"] if ft == "tgt" or ft == "tcmu": assert v["endpoint"] == path.join(common.LONGHORN_DEV_DIR, common.VOLUME_NAME) elif ft == "socket": assert v["endpoint"] == common.get_socket_path(common.VOLUME_NAME) launcher_info = launcher.info() assert launcher_info["endpoint"] == path.join(common.LONGHORN_DEV_DIR, common.VOLUME_NAME) info = cmd.info() assert info["name"] == common.VOLUME_NAME assert info["endpoint"] == v["endpoint"]
def test_ha_revision_counter_consistency(controller, replica1, replica2): # NOQA open_replica(replica1) open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[common.REPLICA1, common.REPLICA2]) assert v.replicaCount == 2 replicas = controller.list_replica() assert len(replicas) == 2 assert replicas[0].mode == "RW" assert replicas[1].mode == "RW" dev = get_blockdev() common.verify_async(dev, 10, 128, 100) r1 = replica1.list_replica()[0] r2 = replica2.list_replica()[0] # kernel can merge requests so backend may not receive 1000 writes assert r1.revisioncounter > '0' assert r1.revisioncounter == r2.revisioncounter
def test_ha_single_replica_failure(controller, replica1, replica2): # NOQA open_replica(replica1) open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[common.REPLICA1, common.REPLICA2]) assert v.replicaCount == 2 replicas = controller.list_replica() assert len(replicas) == 2 assert replicas[0].mode == "RW" assert replicas[1].mode == "RW" dev = get_blockdev() data = common.random_string(128) data_offset = 1024 verify_data(dev, data_offset, data) cleanup_replica(replica2) verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "ERR") verify_read(dev, data_offset, data)
def test_ha_revision_counter_consistency(controller, replica1, replica2): # NOQA open_replica(replica1) open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[ common.REPLICA1, common.REPLICA2 ]) assert v.replicaCount == 2 replicas = controller.list_replica() assert len(replicas) == 2 assert replicas[0].mode == "RW" assert replicas[1].mode == "RW" dev = get_blockdev() common.verify_async(dev, 10, 128, 100) r1 = replica1.list_replica()[0] r2 = replica2.list_replica()[0] # kernel can merge requests so backend may not receive 1000 writes assert r1.revisioncounter > 0 assert r1.revisioncounter == r2.revisioncounter
def test_frontend_show(controller, replica1, replica2): # NOQA common.open_replica(replica1) common.open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[ common.REPLICA1, common.REPLICA2 ]) ft = v["frontend"] if ft == "tgt" or ft == "tcmu": assert v["endpoint"] == path.join(common.LONGHORN_DEV_DIR, common.VOLUME_NAME) elif ft == "socket": assert v["endpoint"] == common.get_socket_path(common.VOLUME_NAME) launcher_info = launcher.info() assert launcher_info["endpoint"] == path.join(common.LONGHORN_DEV_DIR, common.VOLUME_NAME) info = cmd.info() assert info["name"] == common.VOLUME_NAME assert info["endpoint"] == v["endpoint"]
def test_ha_single_replica_failure(controller, replica1, replica2): # NOQA open_replica(replica1) open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[ common.REPLICA1, common.REPLICA2 ]) assert v.replicaCount == 2 replicas = controller.list_replica() assert len(replicas) == 2 assert replicas[0].mode == "RW" assert replicas[1].mode == "RW" dev = get_blockdev() data = common.random_string(128) data_offset = 1024 verify_data(dev, data_offset, data) cleanup_replica(replica2) verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "ERR") verify_read(dev, data_offset, data)
def test_ha_single_replica_rebuild(controller, replica1, replica2): # NOQA open_replica(replica1) open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[common.REPLICA1, common.REPLICA2]) assert v.replicaCount == 2 replicas = controller.list_replica() assert len(replicas) == 2 assert replicas[0].mode == "RW" assert replicas[1].mode == "RW" dev = get_blockdev() data = common.random_string(128) data_offset = 1024 verify_data(dev, data_offset, data) # Cleanup replica2 cleanup_replica(replica2) verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "ERR") verify_read(dev, data_offset, data) controller.delete(replicas[1]) # Rebuild replica2 common.open_replica(replica2) cmd.add_replica(common.REPLICA2) verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "RW") verify_read(dev, data_offset, data) # WORKAROUND for unable to remove the parent of volume head newsnap = cmd.snapshot_create() info = cmd.snapshot_info() assert len(info) == 3 sysnap = info[newsnap]["parent"] assert info[sysnap]["parent"] == "" assert newsnap in info[sysnap]["children"] assert info[sysnap]["usercreated"] is False assert info[sysnap]["removed"] is False cmd.snapshot_purge() info = cmd.snapshot_info() assert len(info) == 2 assert info[newsnap] is not None assert info[VOLUME_HEAD] is not None
def test_snapshot_tree_rebuild(controller, replica1, replica2): # NOQA offset = 0 length = 128 open_replica(replica1) open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[ common.REPLICA1, common.REPLICA2 ]) assert v.replicaCount == 2 replicas = controller.list_replica() assert len(replicas) == 2 assert replicas[0].mode == "RW" assert replicas[1].mode == "RW" dev = get_blockdev() snap, snap_data = snapshot_tree_build(dev, offset, length) data = common.random_string(128) data_offset = 1024 verify_data(dev, data_offset, data) # Cleanup replica2 cleanup_replica(replica2) verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "ERR") verify_read(dev, data_offset, data) controller.delete(replicas[1]) # Rebuild replica2 common.open_replica(replica2) cmd.add_replica(common.REPLICA2) verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "RW") snapshot_tree_verify(dev, offset, length, snap, snap_data)
def test_snapshot_tree_rebuild(controller, replica1, replica2): # NOQA offset = 0 length = 128 open_replica(replica1) open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[ common.REPLICA1, common.REPLICA2 ]) assert v.replicaCount == 2 replicas = controller.list_replica() assert len(replicas) == 2 assert replicas[0].mode == "RW" assert replicas[1].mode == "RW" dev = get_blockdev() snap, snap_data = snapshot_tree_build(dev, offset, length) data = common.random_string(128) data_offset = 1024 verify_data(dev, data_offset, data) # Cleanup replica2 cleanup_replica(replica2) verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "ERR") verify_read(dev, data_offset, data) controller.delete(replicas[1]) # Rebuild replica2 common.open_replica(replica2) cmd.add_replica(common.REPLICA2) verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "RW") snapshot_tree_verify(dev, offset, length, snap, snap_data)
def test_frontend_show(controller, replica1, replica2): # NOQA common.open_replica(replica1) common.open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[common.REPLICA1, common.REPLICA2]) assert v["endpoint"] == path.join(common.LONGHORN_DEV_DIR, common.VOLUME_NAME) info = cmd.info() assert info["name"] == common.VOLUME_NAME assert info["endpoint"] == v["endpoint"]
def test_cleanup_leftover_blockdev(controller, replica1, replica2): # NOQA common.open_replica(replica1) common.open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 blockdev = path.join(frontend.LONGHORN_DEV_DIR, common.VOLUME_NAME) assert not path.exists(blockdev) open(blockdev, 'a').close() v = controller.list_volume()[0] v.start(replicas=[ common.REPLICA1, common.REPLICA2 ]) info = cmd.info() assert info["name"] == common.VOLUME_NAME
def test_ha_double_replica_rebuild(controller, replica1, replica2): # NOQA open_replica(replica1) open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[common.REPLICA1, common.REPLICA2]) assert v.replicaCount == 2 replicas = controller.list_replica() assert len(replicas) == 2 assert replicas[0].mode == "RW" assert replicas[1].mode == "RW" dev = get_blockdev() data1 = common.random_string(128) data1_offset = 1024 verify_data(dev, data1_offset, data1) # Close replica2 r2 = replica2.list_replica()[0] assert r2.revisioncounter == '1' r2.close() verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "ERR") verify_read(dev, data1_offset, data1) data2 = common.random_string(128) data2_offset = 512 verify_data(dev, data2_offset, data2) # Close replica1 r1 = replica1.list_replica()[0] assert r1.revisioncounter == '12' # 1 + 10 + 1 r1.close() # Restart volume common.cleanup_controller(controller) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] # NOTE the order is reversed here v = v.start(replicas=[common.REPLICA2, common.REPLICA1]) assert v.replicaCount == 2 # replica2 is out because of lower revision counter replicas = controller.list_replica() assert len(replicas) == 2 assert replicas[0].mode == "ERR" assert replicas[1].mode == "RW" verify_read(dev, data1_offset, data1) verify_read(dev, data2_offset, data2) # Rebuild replica2 r2 = replica2.list_replica()[0] assert r2.revisioncounter == '1' r2.close() controller.delete(replicas[0]) cmd.add_replica(common.REPLICA2) verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "RW") verify_read(dev, data1_offset, data1) verify_read(dev, data2_offset, data2) r1 = replica1.list_replica()[0] r2 = replica2.list_replica()[0] assert r1.revisioncounter == '22' # 1 + 10 + 1 + 10 assert r2.revisioncounter == '22' # must be in sync with r1
def test_ha_single_replica_rebuild(controller, replica1, replica2): # NOQA open_replica(replica1) open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[ common.REPLICA1, common.REPLICA2 ]) assert v.replicaCount == 2 replicas = controller.list_replica() assert len(replicas) == 2 assert replicas[0].mode == "RW" assert replicas[1].mode == "RW" dev = get_blockdev() data = common.random_string(128) data_offset = 1024 verify_data(dev, data_offset, data) # Cleanup replica2 cleanup_replica(replica2) verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "ERR") verify_read(dev, data_offset, data) controller.delete(replicas[1]) # Rebuild replica2 common.open_replica(replica2) cmd.add_replica(common.REPLICA2) verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "RW") verify_read(dev, data_offset, data) # WORKAROUND for unable to remove the parent of volume head newsnap = cmd.snapshot_create() info = cmd.snapshot_info() assert len(info) == 3 sysnap = info[newsnap]["parent"] assert info[sysnap]["parent"] == "" assert newsnap in info[sysnap]["children"] assert info[sysnap]["usercreated"] is False assert info[sysnap]["removed"] is False cmd.snapshot_purge() info = cmd.snapshot_info() assert len(info) == 2 assert info[newsnap] is not None assert info[VOLUME_HEAD] is not None
def test_ha_double_replica_rebuild(controller, replica1, replica2): # NOQA open_replica(replica1) open_replica(replica2) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] v = v.start(replicas=[ common.REPLICA1, common.REPLICA2 ]) assert v.replicaCount == 2 replicas = controller.list_replica() assert len(replicas) == 2 assert replicas[0].mode == "RW" assert replicas[1].mode == "RW" dev = get_blockdev() data1 = common.random_string(128) data1_offset = 1024 verify_data(dev, data1_offset, data1) # Close replica2 r2 = replica2.list_replica()[0] assert r2.revisioncounter == 1 r2.close() verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "ERR") verify_read(dev, data1_offset, data1) data2 = common.random_string(128) data2_offset = 512 verify_data(dev, data2_offset, data2) # Close replica1 r1 = replica1.list_replica()[0] assert r1.revisioncounter == 12 # 1 + 10 + 1 r1.close() # Restart volume common.cleanup_controller(controller) replicas = controller.list_replica() assert len(replicas) == 0 v = controller.list_volume()[0] # NOTE the order is reversed here v = v.start(replicas=[ common.REPLICA2, common.REPLICA1 ]) assert v.replicaCount == 2 # replica2 is out because of lower revision counter replicas = controller.list_replica() assert len(replicas) == 2 assert replicas[0].mode == "ERR" assert replicas[1].mode == "RW" verify_read(dev, data1_offset, data1) verify_read(dev, data2_offset, data2) # Rebuild replica2 r2 = replica2.list_replica()[0] assert r2.revisioncounter == 1 r2.close() controller.delete(replicas[0]) cmd.add_replica(common.REPLICA2) verify_async(dev, 10, 128, 1) common.verify_replica_state(controller, 1, "RW") verify_read(dev, data1_offset, data1) verify_read(dev, data2_offset, data2) r1 = replica1.list_replica()[0] r2 = replica2.list_replica()[0] assert r1.revisioncounter == 22 # 1 + 10 + 1 + 10 assert r2.revisioncounter == 22 # must be in sync with r1