Hello, I've problem: my ceph cluster (3x mon nodes, 6x osd nodes, every osd node have 12 rotational disk and one NVMe device for bluestore DB). CEPH is installed by ceph orchestrator and have bluefs storage on osd. I've started process upgrade from version 17.2.6 to 18.2.1 by invocating: ceph orch upgrade start --ceph-version 18.2.1 After upgrade of mon and mgr processes orchestrator tried to upgrade the first OSD node, but they are falling down. I've stop the process of upgrade, but I have 1 osd node completely down. After upgrade I've got some error messages and I've found /var/lib/ceph/crashxxxx directories, I attach to this message files, which I've found here. Please, can you advice, what now I can do? It seems, that rocksdb is even non-compatible or corrupted :-( Thanks in advance. Sincerely Jan Marek -- Ing. Jan Marek University of South Bohemia Academic Computer Centre Phone: +420389032080 http://www.gnu.org/philosophy/no-word-attachments.cs.html