Fsdexe Exclusive — ((top))

Imagine a database server (SQL Server, Oracle) trying to write a transaction log, but an aggressive backup filter holds fsdexe exclusive . The database will hang, throwing errors like:

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An improperly implemented exclusive lock at the fsdexe level can lead to . If Driver A waits for Driver B, and Driver B waits for the same exclusive lock held by Driver A, the system freezes → Blue Screen of Death (Bugcheck 0x27: RDR_FILE_SYSTEM or 0x76: PROCESS_HAS_LOCKED_PAGES ). Imagine a database server (SQL Server, Oracle) trying

The word suggests a lock, mode, or access flag—meaning that the process or driver requires sole control over a resource. If Driver A waits for Driver B, and

Backup applications (Veeam, Acronis, Windows Server Backup) often use fsdexe exclusive calls when creating Volume Shadow Copies. To ensure a consistent state, the file system driver temporarily suspends write operations to a specific range of sectors, obtaining exclusive control.

A clean restart will release all exclusive locks unless the driver is set to auto-start and relocks on boot.