refactor(obs): migrate metrics runtime/schema and tighten migration guards (#2584)

rustfs/Cargo.toml

@@ -43,16 +43,15 @@ bench = false
 required-features = ["manual-test-runners"]
 
 [features]
-default = ["direct-io"]
-metrics-gpu = ["rustfs-metrics/gpu"]
+default = []
+metrics-gpu = ["rustfs-obs/gpu"]
 ftps = ["rustfs-protocols/ftps"]
 swift = ["rustfs-protocols/swift"]
 webdav = ["rustfs-protocols/webdav"]
 license = []
-direct-io = []  # Aligned direct I/O reader support (uses aligned pread, does not set O_DIRECT)
 io-scheduler-debug = []  # Enable debug information in I/O scheduler
 tracing-chunk-debug = []  # Enable per-chunk tracing in data plane (high noise, for debugging only)
-full = ["metrics-gpu", "ftps", "swift", "webdav", "direct-io"]
+full = ["metrics-gpu", "ftps", "swift", "webdav"]
 manual-test-runners = []
 
 [lints]
@@ -74,7 +73,6 @@ rustfs-keystone = { workspace = true }
 rustfs-kms = { workspace = true }
 rustfs-lock.workspace = true
 rustfs-madmin = { workspace = true }
-rustfs-metrics = { workspace = true }
 rustfs-notify = { workspace = true }
 rustfs-obs = { workspace = true }
 rustfs-policy = { workspace = true }

rustfs/src/config/info.rs

@@ -590,20 +590,13 @@ struct FeatureSpec {
     default_enabled: bool,
 }
 
-fn feature_specs() -> [FeatureSpec; 9] {
+fn feature_specs() -> [FeatureSpec; 8] {
     [
-        FeatureSpec {
-            name: "direct-io",
-            enabled: cfg!(feature = "direct-io"),
-            description: "Aligned pread-based direct I/O reader support",
-            dependencies: "(none)",
-            default_enabled: true,
-        },
         FeatureSpec {
             name: "metrics-gpu",
             enabled: cfg!(feature = "metrics-gpu"),
             description: "Metrics GPU support",
-            dependencies: "rustfs-metrics/gpu",
+            dependencies: "rustfs-obs/gpu",
             default_enabled: false,
         },
         FeatureSpec {
@@ -652,7 +645,7 @@ fn feature_specs() -> [FeatureSpec; 9] {
             name: "full",
             enabled: cfg!(feature = "full"),
             description: "All features enabled",
-            dependencies: "metrics-gpu + ftps + swift + webdav + direct-io",
+            dependencies: "metrics-gpu + ftps + swift + webdav",
             default_enabled: false,
         },
     ]
@@ -926,13 +919,13 @@ mod tests {
         let info = collect_deps_info_json();
         let feature_names: Vec<_> = info.features.iter().map(|feature| feature.name).collect();
 
-        assert_eq!(info.total_count, 9);
-        assert_eq!(info.features.len(), 9);
-        assert!(feature_names.contains(&"direct-io"));
+        assert_eq!(info.total_count, 8);
+        assert_eq!(info.features.len(), 8);
         assert!(feature_names.contains(&"metrics-gpu"));
         assert!(feature_names.contains(&"io-scheduler-debug"));
         assert!(feature_names.contains(&"manual-test-runners"));
         assert!(!feature_names.contains(&"metrics"));
+        assert!(!feature_names.contains(&"direct-io"));
     }
 
     #[test]
@@ -942,7 +935,7 @@ mod tests {
         assert!(output.contains("| metrics-gpu |"));
         assert!(output.contains("| io-scheduler-debug |"));
         assert!(output.contains("| manual-test-runners |"));
-        assert!(output.contains("| direct-io | enabled by default |"));
-        assert!(output.contains("| full | metrics-gpu + ftps + swift + webdav + direct-io |"));
+        assert!(output.contains("| full | metrics-gpu + ftps + swift + webdav |"));
+        assert!(!output.contains("| direct-io |"));
     }
 }

rustfs/src/main.rs

@@ -53,8 +53,7 @@ use rustfs_heal::{
     create_ahm_services_cancel_token, heal::storage::ECStoreHealStorage, init_heal_manager, shutdown_ahm_services,
 };
 use rustfs_iam::{init_iam_sys, init_oidc_sys};
-use rustfs_metrics::init_metrics_system;
-use rustfs_obs::{init_obs, set_global_guard};
+use rustfs_obs::{init_metrics_runtime, init_obs, set_global_guard};
 use rustfs_scanner::init_data_scanner;
 use rustfs_utils::{
     ExternalEnvCompatReport, apply_external_env_compat, get_env_bool_with_aliases, net::parse_and_resolve_address,
@@ -563,7 +562,7 @@ async fn run(config: rustfs::config::Config) -> Result<()> {
 
     if rustfs_obs::observability_metric_enabled() {
         // Initialize metrics system
-        init_metrics_system(ctx.clone());
+        init_metrics_runtime(ctx.clone());
 
         // Initialize auto-tuner for performance optimization (optional)
         rustfs::init::init_auto_tuner(ctx.clone()).await;