fix(replication): Skip CREATE TABLESPACE statements on managed targets

SerenDB and some other managed PostgreSQL services do not support custom
tablespaces. When replicating from a source that has tablespaces defined
(like AWS RDS), the CREATE TABLESPACE statements now get commented out
during globals restore.

Fixes "CREATE TABLESPACE is not supported on SerenDB" errors.

Author: taariq

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 All notable changes to this project will be documented in this file.
 
+## [5.3.7] - 2025-12-02
+
+### Fixed
+
+- **Skip CREATE TABLESPACE statements during globals restore**: `CREATE TABLESPACE` statements are now automatically commented out when restoring to managed PostgreSQL targets like SerenDB that do not support custom tablespaces.
+
 ## [5.3.6] - 2025-12-02
 
 ### Fixed

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "database-replicator"
-version = "5.3.6"
+version = "5.3.7"
 edition = "2021"
 license = "Apache-2.0"
 description = "Universal database-to-PostgreSQL replication CLI. Supports PostgreSQL, SQLite, MongoDB, and MySQL."

Cargo.toml

@@ -232,6 +232,8 @@ pub async fn init(
         .context("Failed to remove restricted parameter settings from globals dump")?;
     remove_restricted_role_grants(globals_file.to_str().unwrap())
         .context("Failed to remove restricted role grants from globals dump")?;
+    migration::remove_tablespace_statements(globals_file.to_str().unwrap())
+        .context("Failed to remove CREATE TABLESPACE statements from globals dump")?;
 
     // Step 2: Restore global objects
     tracing::info!("Step 2/4: Restoring global objects to target...");

src/commands/init.rs

@@ -168,6 +168,39 @@ pub fn remove_restricted_guc_settings(path: &str) -> Result<()> {
     Ok(())
 }
 
+/// Comments out `CREATE TABLESPACE` statements in a globals dump file.
+///
+/// Some managed PostgreSQL targets (e.g., SerenDB) do not support custom tablespaces.
+/// When replicating from a source that has tablespaces defined, this function
+/// comments out those statements to allow the globals restore to proceed.
+pub fn remove_tablespace_statements(path: &str) -> Result<()> {
+    let content = fs::read_to_string(path)
+        .with_context(|| format!("Failed to read globals dump at {}", path))?;
+
+    let mut updated = String::with_capacity(content.len());
+    let mut modified = false;
+
+    for line in content.lines() {
+        let lower_trimmed = line.trim().to_ascii_lowercase();
+        if lower_trimmed.starts_with("create tablespace") {
+            updated.push_str("-- ");
+            updated.push_str(line);
+            updated.push('\n');
+            modified = true;
+        } else {
+            updated.push_str(line);
+            updated.push('\n');
+        }
+    }
+
+    if modified {
+        fs::write(path, updated)
+            .with_context(|| format!("Failed to write sanitized globals dump to {}", path))?;
+    }
+
+    Ok(())
+}
+
 /// Comments out `GRANT` statements for roles that are restricted on managed services.
 ///
 /// AWS RDS and other managed services may prevent granting certain default roles

src/migration/dump.rs

@@ -11,7 +11,7 @@ pub mod schema;
 pub use checksum::{compare_tables, compute_table_checksum, ChecksumResult};
 pub use dump::{
     dump_data, dump_globals, dump_schema, remove_restricted_guc_settings,
-    remove_superuser_from_globals, sanitize_globals_dump,
+    remove_superuser_from_globals, remove_tablespace_statements, sanitize_globals_dump,
 };
 pub use estimation::{estimate_database_sizes, format_bytes, format_duration, DatabaseSizeInfo};
 pub use filtered::copy_filtered_tables;