On 25/11/10 10:32, Tomasz Torcz wrote: > On Thu, Nov 25, 2010 at 04:19:17AM -0600, David Nicol wrote: >> unresearched question/suggestion: >> >> Is there general support for a "fast copy" ioctl in the VFS layer, >> which would be hooked by file systems that support COW or other forms >> of deduplication and can provide copy semantics by manipulating >> metadata only? >> > > Yes, see reflink(2) syscall (http://lwn.net/Articles/331576/). >
Yep and this: http://lwn.net/Articles/335380/ Note that cp --reflink has been supported for a while, but it's BTRFS specific at the moment. We'll need to change to the more generic interface. cheers, Pádraig. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
