> [!NOTE] ![[assets/wl_lwlock_tablespacecreate.png|256]] > > | | | > | :--- | :--- | > | **Wait Category** | LWLock | > | **Mechanism** | `TablespaceCreateLock` | > | **Operations** | [[Operations/Table/SeqScan]], [[Operations/Tuple/ModifyTable]] | > | **Resources** | [[Resources/disk IO]], [[Resources/CPU|CPU]] | > > **Physical Infrastructure Serialization Point**. Because tablespaces map database objects to specific physical paths on the host filesystem, the engine must ensure that no two processes are attempting to modify the symbolic links or directory permissions within `pg_tblspc` simultaneously.