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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/coreutils.texi | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi index 90a54b268..bb1d87a87 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -7543,6 +7543,15 @@ Also, it is not portable to use @option{-R} to copy symbolic links unless you also specify @option{-P}, as @acronym{POSIX} allows implementations that dereference symbolic links by default. +@item --reflink +@opindex --reflink +Perform a lightweight, copy-on-write (COW) copy. +Copying with this option can succeed only on some relatively new file systems. +Once it has succeeded, beware that the source and destination files +share the same disk data blocks as long as they remain unmodified. +Thus, if a disk I/O error affects data blocks of one of the files, +the other suffers the exact same fate. + @item --remove-destination @opindex --remove-destination Remove each existing destination file before attempting to open it |