On Tue, May 08, 2018 at 11:11:33AM -0500, Goldwyn Rodrigues wrote: > What should the default behavior (without flags) be? Create holes if and how the file systems thinks is best. That might even include creating holes if the original file didnt have any. > options: CFR_FILL_HOLES or CFR_KEEP_HOLES. Alternatively, we can > document the state of holes in the destination is not determinant and > coreutils/cp can perform the lseek(SEEK_HOLE/DATA) Create holes by default, and no flag that just create confusion as holes are a file system implementation detail subject to change at any time. > If cp calls copy_file_range(), it will clone the portion if the > filesystem supports it, which may not work with "cp --reflink=never" > option. In that case, should we have CFR_NO_REFLINK option for > copy_file_range()? cp --reflink=never is pretty idiotic. Think of inline dedup for example which will just create reflink behinds its back in the file system, or just dedup invisibly to it in the storage device. > > > -- > Goldwyn ---end quoted text---
