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since some time we experience service outages in our Ceph cluster whenever there is any change to the HEALTH status. E. g. swapping storage devices, adding storage devices, rebooting Ceph hosts, during backfills ect. Just now I had a recent situation, where several VMs hung after I rebooted one Ceph host. We have 3 replications for each PG, 3 mon, 3 mgr, 3 mds and 71 osds spread over 9 hosts. We use Ceph as a storage backend for our Proxmox VE (PVE) environment. The outages are in the form of blocked virtual file systems of those virtual machines running in our PVE cluster. It feels similar to stuck and inactive PGs to me. Honestly though I'm not really sure on how to debug this problem or which log files to examine. OS: Debian 9 Kernel: 4.12 based upon SLE15-SP1 # ceph version ceph version 12.2.8-133-gded2f6836f (ded2f6836f6331a58f5c817fca7bfcd6c58795aa) luminous (stable) Can someone guide me? I'm more than happy to provide more information as needed.
What is your network? |
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