On Tuesday 21 August 2018 16:55:31 Dr. Nikolaus Klepp wrote: > Am Dienstag, 21. August 2018 schrieb Slávek Banko: > > 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 > > Maybe I missed the point somewhere, but I was under the impression > that Gene wants to run linuxcnc on a production machine, and that > needs a realtime kernel. To be more prcise, linuxcnc 2.7 needs a rtai > patched kernel if you want decent latentcy, not the rtpreempt kernels > from debian. I have now two mills running on devuan ascii, both with > the old kernels from linuxcnc-wheezy 'cause of latency. > > Nik Glad I have a rowing partner in this leaky rowboat, Nik. -- Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene>