Dne út 21. srpna 2018 Nick Koretsky napsal(a):
> On Tue, 21 Aug 2018 09:08:55 -0400
>
> Gene Heskett <gheskett@...> wrote:
> > On Tuesday 21 August 2018 08:21:12 Nick Koretsky wrote:
> > > On Tue, 21 Aug 2018 12:55:28 +0200
> > >
> > > "Dr. Nikolaus Klepp" <office@...> wrote:
> > > > Am Dienstag, 21. August 2018 schrieb Nick Koretsky:
> > > > > On Tue, 21 Aug 2018 09:20:43 +0200
> > > > >
> > > > > "Dr. Nikolaus Klepp" <office@...> wrote:
> > > > > > > Its tears so far Nik. There are so many differences just in
> > > > > > > the ext4's used that one of them should be renamed, they
> > > > > > > will NOT cross mount, ext4 disk to ext4 mount.
> > > > > >
> > > > > > Hi Gene!
> > > > > >
> > > > > > When you cannot mount the ext4 partions from one another,
> > > > > > then there is something very wrong. ext4 can be mounted as
> > > > > > ext2 and that should alway work - at least, if the drives and
> > > > > > filesystems are ok.
> > > > >
> > > > > No, you are wrong. There were options added to ext4 which made
> > > > > it incompatible with older kernels. And a few years ago they
> > > > > made this options default. Debian wheezy kernel (3.2) would not
> > > > > mount ext4 created in debian stretch.
> > > >
> > > > Hi!
> > > >
> > > > Now that's a gotcha I did not know. How did it come that this was
> > > > thought of beeing a good idea?
> > > >
> > > > Nik
> > >
> > > Yep. Exactly my thought when i spent 3-hours with a server refusing
> > > to boot after migration to a new hdd (i used a stretch flash to
> > > copy). Who the fuck toughs it was a good idea?!! Why not call it
> > > ext5 or ext4a or whatever?!!
> >
> > +100
> >
> > Now the question of the day is how the hell do we fix it?
>
> If you need a shared partition between wheezy and stretch create it in
> wheezy.

I recommend upgrading to wheezy-backports kernel.

Cheers
-- 
Slávek