On Fri, Apr 17, 2015 at 5:08 PM, Christoph Anton Mitterer <calestyo@xxxxxxxxxxxx> wrote: > Hey. > > I've seen that this has been asked some times before, and there are > stackoverflow/etc. questions on that, but none with a really good > answer. > > How can I best copy one btrfs filesystem (with snapshots and subvolumes) > into another, especially with keeping the CoW/reflink status of all > files? > And ideally incrementally upgrade it later (again with all > snapshots/subvols, and again not loosing the shared blocks between these > files). Make the source a seed device, add new device, delete seed. Once that completes, unmount, unset btrfs seed, and now the two devices are separate fs volumes each with unique UUID. There may still be bugs with seed device, it's been maybe 6 months since I last checked. -- Chris Murphy -- 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
