>>> Dmitri Maziuk <dmitri.maz...@gmail.com> schrieb am 17.10.2016 um 16:51 in
> On 2016-10-17 02:12, Ulrich Windl wrote:
>> Have you tried a proper variant of "lsof" before? So maybe you know
> which process might block the device. I also think if you have LVM on
> top of DRBD, you must deactivate the VG before trying to unmount.
> No LVM here: AFAIMC these days it's another solution in search of a problem.
> Next time I'll try to remember to do it from console root login in the
> node, maybe I'll see whet lsof has to say then.
> I have a feeling it's not happening on plain kernel upgrade, only when
> kmod-drbd is updated, but I don't have enough data points yet for
> anything more than a feeling. I have a couple of haresources drbd+nfs
Ah, that rings a bell: Sometimes when kernel modules are updated, some scripts
think they must unload modues, then reload them. With a new kernel not being
bootet yet, the modules on disk don't fit the running kernel. Maybe your
problem is like this?
> clusters that don't do this, but neither of them is running dovecot...
> could be systemd "RA" not stopping dovecot properly, too.
> Users mailing list: Users@clusterlabs.org
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://bugs.clusterlabs.org
Users mailing list: Users@clusterlabs.org
Project Home: http://www.clusterlabs.org
Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf