can't switch_root

[Laurent Bercot]

> Yes, initially I am booting up with minimal initramfs.

 Well in that case you cannot use pivot_root, and have to use switch_root
indeed.
 (You could also clean up your filesystem by hand and then mount --move,
but that offers no real benefit over using switch_root, which does exactly
that for you.)

 Could you send the output of a strace of your switch_root command ?

-- 
 Laurent