MD_128MB_SECT
((MD_128MB_SECT - MD_32kB_SECT - MD_4kB_SECT) * (1LL<<(BM_EXT_SHIFT-9)))
return MD_128MB_SECT * bdev->md.meta_dev_idx;
if (in_core->md_size_sect != MD_128MB_SECT
min_md_device_sectors = MD_128MB_SECT * (new_disk_conf->meta_dev_idx + 1);
bdev->md.md_size_sect = MD_128MB_SECT;