Re: How to find (out if) files sharing content?
From: Jan Schmidt <hidden>
Date: 2012-10-30 15:58:20
On Tue, October 30, 2012 at 16:39 (+0100), Hugo Mills wrote:
It should be possible to walk through the extents of a given file, and (I think) follow back-refs from the extent back to the other files that share it.
You wish :-) Backrefs are not made to walk them while the file system is online. However "btrfs inspect logical" manages quite well, at least I haven't heard otherwise so far. You still need to get the logical block numbers, either by TREE_SEARCH ioctl or by filefrag. -Jan