Hello, Is this supposed to work? (/data is the root volume, /data/a is a subvolume) btrfs subvolume snapshot /data/a /data/b # make some changes in b btrfs send -p /data/a /data/b > delta btrfs receive /data/a < delta I'm getting "ERROR: could not find parent subvolume" on receive. What I'm trying to do is to back up using send/receive, but I don't have 50% free space, and (please correct me if I'm wrong) since receive doesn't do deduplication, I want to use snapshot to do the initial bootstrapping, instead of send/receive without a parent. Thanks! Matthew -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html