fullfsync

Queries or sets the fullfsync flag.

This pragma determines whether the fsync() system call uses the F_FULLFSYNC synchronization method on supported systems (like macOS). Using F_FULLFSYNC ensures that all data is flushed to the disk hardware, providing maximum durability against power loss, but it can be significantly slower.

When disabled (false), a standard fsync() is used, which is faster but may not protect against data loss if the operating system crashes or power is lost shortly after write.

The default value is typically false.

See also