BBLK_ZFS_EXTRA_OFF
BBLK_ZFS_EXTRA_OFF) != BC_SUCCESS) {
if (read_in(dev_fd, dest, size, BBLK_ZFS_EXTRA_OFF) != BC_SUCCESS) {
if (write_out(device->fd, bufptr, size, BBLK_ZFS_EXTRA_OFF)
"to %s at offset %d\n", device->path, BBLK_ZFS_EXTRA_OFF);