Re: [ceph-users] Clarification of communication between mon and osd

2019-01-14 Thread Eugen Block
Thanks for the reply, Paul. Yes, your understanding is correct. But the main mechanism by which OSDs are reported as down is that other OSDs report them as down with a much stricter timeout (20 seconds? 30 seconds? something like that). Yes, the osd_heartbeat_grace of 20 seconds has occured

Re: [ceph-users] Clarification of communication between mon and osd

2019-01-14 Thread Paul Emmerich
Yes, your understanding is correct. But the main mechanism by which OSDs are reported as down is that other OSDs report them as down with a much stricter timeout (20 seconds? 30 seconds? something like that). It's quite rare to hit the "mon osd report timeout" (the usual scenario here is a

[ceph-users] Clarification of communication between mon and osd

2019-01-14 Thread Eugen Block
Hello list, I noticed my last post was displayed as a reply to a different thread, so I re-send my question, please excuse the noise. There are two config options of mon/osd interaction that I don't fully understand. Maybe one of you could clarify it for me. mon osd report timeout - The