Now here's the thing:
Some weeks ago Proxmox upgraded from kernel 4.13 to 4.15. Since then I'm
getting slow requests that
cause blocked IO inside the VMs that are running on the cluster (but not
necessarily on the host
with the OSD causing the slow request).
If I boot back into 4.13 then Ceph
Dear community,
TL;DR: Cluster runs good with Kernel 4.13, produces slow_requests with Kernel
4.15. How to debug?
I'm running a combined Ceph / KVM cluster consisting of 6 hosts of 2 different
kinds (details at the end).
The main difference between those hosts is CPU generation (Westmere /
