Linux 7.3 KSMBD adds Apple Time Machine interoperability
KSMBD can now serve Apple Time Machine backups over SMB, using reverse-engineered AAPL SMB2 extensions for Finder metadata, streams, COPYCHUNK, sparse files, change notification, and RPC compatibility. The same Linux 7.3 work adds SMB2 command sequence windows, SMB3 request replay, per-share encryption, and SMB Direct RDMA encryption.
The Apple extensions are opt-in because their protocol behavior is undocumented; the implementation therefore expands practical interoperability without pretending the compatibility contract is stable. The Phoronix forum had one comment, but its endpoint was inaccessible during review.