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Backport #18582

Updated by Nathan Cutler about 7 years ago

During our testing we found out that during upgrade from 0.94.9 to 10.2.5 we're hitting issue http://tracker.ceph.com/issues/17386 ("Upgrading 0.94.6 -> 0.94.9 saturating mon node networking"). Apparently, there's a few commits for both hammer and jewel which are supposed to fix this issue for upgrades from 0.94.6 to 0.94.9 (and possibly for others), but we're still seeing this upgrading to Jewel, and symptoms are exactly same - after upgrading MONs, each not yet upgraded OSD takes full OSDMap from monitors after failing the internal CRC check.

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