On Tue, May 16, 2017 at 3:37 PM, Stefan Priebe - Profihost AG
<s.pri...@profihost.ag> wrote:
> We've enabled the op tracker for performance reasons while using SSD
> only storage ;-(

Disabled you mean?

> Can enable the op tracker using ceph osd tell? Than reproduce the
> problem. Check what has stucked again? Or should i generate an rbd log
> from the client?

>From a super-quick glance at the code, it looks like that isn't a
dynamic setting. Of course, it's possible that if you restart OSD 46
to enable the op tracker, the stuck op will clear itself and the VM
will resume. You could attempt to generate a gcore of OSD 46 to see if
information on that op could be extracted via the debugger, but no
guarantees.

You might want to verify that the stuck client and OSD 46 have an
actual established TCP connection as well before doing any further
actions.

-- 
Jason
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