docs(design): Windows ReFS reflink via FSCTL_DUPLICATE_EXTENTS (#1389)#3702
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Design note for migrating the Windows ReFS reflink path off raw windows-sys onto the workspace-preferred windows-rs crate, with a runtime block-refcounting capability probe, chunked alignment handling, and a hook for the upcoming --cow / --no-cow CLI flag. Wire-protocol-neutral; replaces the existing PlatformCopy stub.
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#3702) Design note for migrating the Windows ReFS reflink path off raw windows-sys onto the workspace-preferred windows-rs crate, with a runtime block-refcounting capability probe, chunked alignment handling, and a hook for the upcoming --cow / --no-cow CLI flag. Wire-protocol-neutral; replaces the existing PlatformCopy stub.
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Summary
windows-systo the workspace-preferredwindows-rscrate, with a runtime block-refcounting capability probe, chunked cluster alignment, and a hook for the planned--cow/--no-cowCLI flag (Improve placeholder scanning for panic macros #1826).platform_copy_implwithout changing public signatures orCopyMethodvariants.Test plan
FSCTL_DUPLICATE_EXTENTS_TO_FILEdocumentation.ERROR_BLOCK_TOO_MANY_REFERENCES,ERROR_INVALID_PARAMETER,ERROR_NOT_SUPPORTED,ERROR_VIRUS_INFECTED) covers the cases the dispatch chain should soft-fail on.windows-rsfeature flags (Win32_Foundation,Win32_Storage_FileSystem,Win32_System_Ioctl,Win32_System_IO) are sufficient and consistent with the workspace's existing usage in Handle cargo-rpm absence before profile validation #1866.Format-Volume -FileSystem ReFS) is acceptable for the Windows integration job.