Hi folks, Recently I start to look at the bcache on-disk superblock extension. I still remember years ago people discussed adding some persistent configuration itesm on disk, to avoid setting them via sysfs interface every time after reboot. While I am thinking about this, I do appreciate your help about the input on which configuration item should be stored in the on-disk superblock. Although I am probably not able to make every required input being persistent in the on-disk superblock, I believe your help may help me to decide a reasonable option set. Thank you all in advance. Coly Li