ignore warnings cancel

Signed-off-by: Alex Chi Z <chi@neon.tech>

pageserver/src/pgdatadir_mapping.rs

@@ -723,6 +723,9 @@ impl Timeline {
                             v2_exists
                         );
                     }
+                    Err(e) if e.is_cancel() => {
+                        // Cancellation errors are fine to ignore, do not log.
+                    }
                     Err(e) => {
                         tracing::warn!("failed to get rel exists in v2: {e}");
                     }
@@ -863,6 +866,9 @@ impl Timeline {
                             rels_v2.len()
                         );
                     }
+                    Err(e) if e.is_cancel() => {
+                        // Cancellation errors are fine to ignore, do not log.
+                    }
                     Err(e) => {
                         tracing::warn!("failed to list rels in v2: {e}");
                     }
@@ -2600,6 +2606,12 @@ impl DatadirModification<'_> {
                             );
                         }
                     }
+                    Err(WalIngestError {
+                        kind: WalIngestErrorKind::Cancelled,
+                        ..
+                    }) => {
+                        // Cancellation errors are fine to ignore, do not log.
+                    }
                     Err(e) => {
                         tracing::warn!("error dropping rels: {}", e);
                     }

test_runner/regress/test_pg_regress.py

@@ -123,9 +123,9 @@ def post_checks(env: NeonEnv, test_output_dir: Path, db_name: str, endpoint: End
 def patch_tenant_conf(tenant_conf: dict[str, Any], reldir_type: str) -> dict[str, Any]:
     tenant_conf = tenant_conf.copy()
     if reldir_type == "v2":
-        tenant_conf["rel_size_v2_enabled"] = "true"
+        tenant_conf["rel_size_v2_enabled"] = True
     else:
-        tenant_conf["rel_size_v2_enabled"] = "false"
+        tenant_conf["rel_size_v2_enabled"] = False
     return tenant_conf
 
 
@@ -440,6 +440,14 @@ def test_tx_abort_with_many_relations(
         ],
     )
 
+    if reldir_type == "v2":
+        # v2-only mode instead of v1-v2 validation mode
+        env.pageserver.http_client().timeline_patch_index_part(
+            env.initial_tenant,
+            env.initial_timeline,
+            {"rel_size_migration": "migrated"},
+        )
+
     # How many relations: this number is tuned to be long enough to take tens of seconds
     # if the rollback code path is buggy, tripping the test's timeout.
     n = 5000