Bug#857743: reason for kernel-panic

[Martin Pitt]

Hello Andreas,

Andreas Glaeser [2017-03-17  8:31 +0100]:
> I am not convinced, that what you claim is true, since the hybrid-filesystem-concept
> worked on pure debian-stable

For some value of "works" -- the change between stable and testing (and perhaps
some backports) is that some libraries in /usr are now required during boot.
The initramfs has mounted /usr since before Jessie, which helped a lot with
the countless big and small bugs that occur from the / vs. /usr split. (The
/usr merge, once it lands, will fix this once and for all.)

> You can have /usr in a separate partition, the symlink-workaroud to BTRFS-constraints
> should also be workable.

As Felipe explained, this will only work if your initrd then also mounts the
file system that /usr points to.

> Please don't try to shine your communication-problems by giving me incorrect facts.

This is a totally inappropriate ad-hominem attack. Once more and we will ignore
further bug reports from you.

> > In this configuration /usr is a regular dir on the root filesystem.
> > What caused the earlier problem was having /usr being a symlink to
> > something that was not mounted by the initramfs. Debian does not
> > support such configurations[1]. While you are using an initramfs, your
> > configuration is such that the initramfs does not mount the filesystem
> > that will end up being seen in /usr.
> > 
> > I'm now closing this bug, as it appears the root cause is an
> > unsupported configuration.

This is totally correct information, not a "communication problem".

Martin