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  • Mark Fasheh's avatar
    btrfs: don't update mtime/ctime on deduped inodes · 1c919a5e
    Mark Fasheh authored
    One issue users have reported is that dedupe changes mtime on files,
    resulting in tools like rsync thinking that their contents have changed when
    in fact the data is exactly the same. We also skip the ctime update as no
    user-visible metadata changes here and we want dedupe to be transparent to
    the user.
    Clone still wants time changes, so we special case this in the code.
    This was tested with the btrfs-extent-same tool.
    Signed-off-by: default avatarMark Fasheh <>
    Signed-off-by: default avatarChris Mason <>