On Tue, Sep 21, 2021 at 07:09:49AM -0700, Paul D. O'Rorke wrote: > I have to pass on my thanks and respect. > > I have been running a 3 node "Stacked" replication set on 8.9.6 for some > years now. This weekend I finally bit the bullet and installed 9.11.0 from > the Ubuntu 20.04 LTS repos on new hardware and I am blown away at how > simple and efficient the move was.
I'm not sure if there is some misunderstanding here... Your kernel module (shipped with the Ubuntu kernel image) is still in-tree DRBD 8.4. Assuming that you did not install DRBD 9.0/9.1 from source/our PPA as well. So to me it looks like you only updated the user-space tools (from 8.9.6 to 9.11.0). And yes, expected that that just works, we have not touched the parts used for *kernel module* 8.4 in years by now I guess. A long time ago we just called the next drbd-utils version 9.x instead of 8.x to flag that we now fully support *kernel module* 9.0 (at the time, now also 9.1). But it was just a version change without any meaning for kernel module 8.4. We could have called the user space parts 42.23, but the kernel module would still be 8 or 9. Also I expect that a real kernel module switch from 8 to 9 would be that smooth, but to me it looks like you just updated user space (and probably the in kernel module from 8 something to 8 something else) as part of a newer kernel. cat /proc/drbd might clarify that a bit :) Regards, rck _______________________________________________ Star us on GITHUB: https://github.com/LINBIT drbd-user mailing list drbd-user@lists.linbit.com https://lists.linbit.com/mailman/listinfo/drbd-user
