On Wed, 26 Nov 2014 15:18:26 -0800 Robert White <rwhite@xxxxxxxxx> wrote: > So you _could_ reflink the file but you'd have to do it to another file > with no data checksums -- which basically means a NOCOW file, or > mounting with nodatasum while you do the reflink, but now you have more > problem files. Bingo!!! A cp --reflink to a destination that's been made chattr +C prior to that, works perfectly. My goal was to convert regular top-level directories into subvolumes (for further snapshotting). With that trick, I've been able to do that now w/o issues. $ mv Music Music.orig $ sudo btrfs sub create Music Create subvolume './Music' $ sudo chattr +C Music $ sudo cp -a --reflink Music.orig/* Music/ $ Finished with no rewriting necessary. After that I recursively-removed the +C attribute from all newly reflinked files, and cp --reflink as well as snapshotting of those works fine. Thanks for the idea. :) -- With respect, Roman -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
