This fun issue came up again in the form of 10422: http://tracker.ceph.com/issues/10422 I think we have 3 main options: 1. Ask users to do a mon scrub prior to upgrade to ensure it is safe. If a mon is out of sync, manually kick it out, blow it away, and resync. 2. Do a one-time broadcast of the full osdmap across mons to ensure they are consistent after upgrade. Bleh. 3. Include full encoded OSDMap in txns on updates going forward. I like 3 because it solves this and all related problems going forward. The local encoding of full osdmaps has proven to be a huge headache. And, the patch to do it is remarkably simple https://github.com/ceph/ceph/pull/3247/files and dovetails well with the new CRC. What do you think? sage -- 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
