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Pity userspace on where this is done on a simple minded filesystem

Pity userspace on where this is done on a simple minded filesystem

Posted May 6, 2009 18:49 UTC (Wed) by jzbiciak (subscriber, #5246)
In reply to: Pity userspace on where this is done on a simple minded filesystem by adj
Parent article: The two sides of reflink()

Simple answer: Don't implement this on simple minded filesystems. :-) Save it for filesystems that COW effectively (Btrfs), or can be taught to do so (ext4). I doubt anyone's planning to implement this over xiafs or vfat.

Slightly fancier answer: Perhaps this is another thing to "ulimit"? Return EPERM or EFBIG (file is too big) if the limit's exceeded.


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