I had an amusing little problem today with a bug report about IO pausing on a cluster when OSDs are killed. Naturally, the first thing I wanted to do was see if it was the result of OSDs not getting marked down, or if the PGs were not peering quickly after that. Only it turns out that in Luminous, we no longer log the pg states to any single log I can find. ceph.log now contains only the health summary; I wasn't provided the mgr log but it appears to require debug 10 before printing out individual states. This means the only way to get them is to have a high debug value while the logs are running (and I don't think this is something people are used to on the manager yet), and that any issues in the field will be difficult to resolve if they aren't immediately reproducible. So: I'm pretty sure we need to log PG state changes in more detail by default. Does anybody have suggestions or preferences for *how* that happens? My preference is for them to show up in ceph.log... -Greg -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
