18 Dec
2025
18 Dec
'25
7:30 p.m.
On Thu Dec 18 19:30:21 2025 +0000, nikita pushkarev wrote:
This change was motivated by a real (non-public) app that issues FSCTL_DUPLICATE_EXTENTS_TO_FILE to clone file ranges; without it, the app fails during its copy/patch phase. I can’t share the app, but I validated the code path against that workload. As far as I know Windows only supports block cloning on ReFS, does this app require ReFS? Or when run on NTFS, does it handle failure gracefully but was just expecting a different error code than Wine was returning?
-- https://gitlab.winehq.org/wine/wine/-/merge_requests/9732#note_125835