Brad, thanks for the bug report. This is exactly the problem I am having (log-wise). >>> >>> You don't give any indication what version you are running but see >>> https://tracker.ceph.com/issues/23205 >> >> >> the cluster is an Proxmox installation which is based on an Ubuntu kernel. >> >> # ceph -v >> ceph version 12.2.5 (dfcb7b53b2e4fcd2a5af0240d4975adc711ab96e) luminous >> (stable) >> >> The mistery is that these blocked requests occur numerously when at least >> one of the 6 servers is booted with kernel 4.15.17, if all are running >> 4.13.16 the number of blocked requests is infrequent and low. > > Sounds like you need to profile your two kernel versions and work out > why one is under-performing. > Well, the problem is that I see this behavior only in our production system (6 hosts and 22 OSDs total). The test system I have is a bit smaller (only 3 hosts with 12 OSDs on older hardware) and shows no sign of this possible regression… Regards, Uwe _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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