Add tower rollback test (#20158)
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@ -20,7 +20,7 @@ use {
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consensus::{Tower, SWITCH_FORK_THRESHOLD, VOTE_THRESHOLD_DEPTH},
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optimistic_confirmation_verifier::OptimisticConfirmationVerifier,
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replay_stage::DUPLICATE_THRESHOLD,
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tower_storage::FileTowerStorage,
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tower_storage::{FileTowerStorage, SavedTower, TowerStorage},
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validator::ValidatorConfig,
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},
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solana_download_utils::download_snapshot_archive,
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@ -3174,6 +3174,12 @@ fn copy_blocks(end_slot: Slot, source: &Blockstore, dest: &Blockstore) {
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}
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}
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fn save_tower(tower_path: &Path, tower: &Tower, node_keypair: &Keypair) {
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let file_tower_storage = FileTowerStorage::new(tower_path.to_path_buf());
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let saved_tower = SavedTower::new(tower, node_keypair).unwrap();
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file_tower_storage.store(&saved_tower).unwrap();
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}
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fn restore_tower(tower_path: &Path, node_pubkey: &Pubkey) -> Option<Tower> {
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let file_tower_storage = FileTowerStorage::new(tower_path.to_path_buf());
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@ -3756,6 +3762,91 @@ fn test_run_test_load_program_accounts_root() {
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run_test_load_program_accounts(CommitmentConfig::finalized());
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}
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#[test]
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#[serial]
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fn test_restart_tower_rollback() {
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// Test node crashing and failing to save its tower before restart
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solana_logger::setup_with_default(RUST_LOG_FILTER);
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// First set up the cluster with 4 nodes
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let slots_per_epoch = 2048;
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let node_stakes = vec![10000, 1];
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let validator_strings = vec![
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"28bN3xyvrP4E8LwEgtLjhnkb7cY4amQb6DrYAbAYjgRV4GAGgkVM2K7wnxnAS7WDneuavza7x21MiafLu1HkwQt4",
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"2saHBBoTkLMmttmPQP8KfBkcCw45S5cwtV3wTdGCscRC8uxdgvHxpHiWXKx4LvJjNJtnNcbSv5NdheokFFqnNDt8",
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];
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let validator_b_keypair = Arc::new(Keypair::from_base58_string(validator_strings[1]));
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let validator_b_pubkey = validator_b_keypair.pubkey();
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let validator_keys = validator_strings
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.iter()
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.map(|s| (Arc::new(Keypair::from_base58_string(s)), true))
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.take(node_stakes.len())
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.collect::<Vec<_>>();
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let mut config = ClusterConfig {
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cluster_lamports: 100_000,
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node_stakes: node_stakes.clone(),
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validator_configs: make_identical_validator_configs(
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&ValidatorConfig::default(),
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node_stakes.len(),
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),
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validator_keys: Some(validator_keys),
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slots_per_epoch,
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stakers_slot_offset: slots_per_epoch,
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skip_warmup_slots: true,
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..ClusterConfig::default()
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};
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let mut cluster = LocalCluster::new(&mut config, SocketAddrSpace::Unspecified);
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let val_b_ledger_path = cluster.ledger_path(&validator_b_pubkey);
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let mut earlier_tower: Tower;
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loop {
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sleep(Duration::from_millis(1000));
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// Grab the current saved tower
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earlier_tower = restore_tower(&val_b_ledger_path, &validator_b_pubkey).unwrap();
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if earlier_tower.last_voted_slot().unwrap_or(0) > 1 {
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break;
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}
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}
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let exited_validator_info: ClusterValidatorInfo;
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loop {
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sleep(Duration::from_millis(1000));
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// Wait for second, lesser staked validator to make a root past the earlier_tower's
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// latest vote slot, then exit that validator
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if let Some(root) = root_in_tower(&val_b_ledger_path, &validator_b_pubkey) {
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if root
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> earlier_tower
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.last_voted_slot()
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.expect("Earlier tower must have at least one vote")
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{
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exited_validator_info = cluster.exit_node(&validator_b_pubkey);
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break;
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}
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}
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}
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// Now rewrite the tower with the *earlier_tower*
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save_tower(&val_b_ledger_path, &earlier_tower, &validator_b_keypair);
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cluster.restart_node(
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&validator_b_pubkey,
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exited_validator_info,
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SocketAddrSpace::Unspecified,
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);
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// Check this node is making new roots
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cluster.check_for_new_roots(
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20,
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"test_restart_tower_rollback",
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SocketAddrSpace::Unspecified,
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);
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}
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#[test]
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#[serial]
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fn test_run_test_load_program_accounts_partition_root() {
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