Hi there, I am using an usb pen drive as portable rootfs, which works great even within VirtualBox. Because it is a bit slow I have configured write-through cache devices on my main systems and it works great. However the fact that a bcache device won't initialize in case its caching device is missing (even for write-through) means I have to manually detach the cache device of the current computer before shutdown in case I would like to boot the pendrive somewhere else. Another option would be to unconditionally remove it during shutdown, which means I would loose all cached data at every boot - even when booting the stick a dozen times on the same machine. Is there some way to tell bcache to detach a caching device automatically in case it is missing? Thanks and best regards, Clemens
