With kernel 4.10.3, and btrfs-progs 4.10, I'm still seeing the following errors only with --mode=lowmem with a single device volume.
ERROR: data extent[16913485824 7577600] backref lost (hundreds of lines of the same thing) btrfs-image (no errors reported during capture) 518MiB https://drive.google.com/open?id=0B7NttHfq6wAJd3ZXM3AxS0dVQlU Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html