Hi list ? I?ve got a small dev. cluster: 3 OSD nodes with 6 disks/OSDs each and a single monitor (this, it seems, was my mistake). The monitor node went down hard and it looks like the monitor?s db is in a funny state. Running ?ceph-mon? manually with ?debug_mon 20? and ?debug_ms 20? gave the following: > /usr/bin/ceph-mon -i monhost --mon-data /var/lib/ceph/mon/ceph-monhost --debug_mon 20 --debug_ms 20 -d > 2014-07-03 23:20:55.800512 7f973918e7c0 0 ceph version 0.67.7 (d7ab4244396b57aac8b7e80812115bbd079e6b73), process ceph-mon, pid 24930 > Corruption: checksum mismatch > Corruption: checksum mismatch > 2014-07-03 23:20:56.455797 7f973918e7c0 -1 failed to create new leveldb store I attempted to make use of the leveldb Python library?s ?RepairDB? function, which just moves enough files into ?lost? that when running the monitor again I?m asked if I ran mkcephfs. Any insight into resolving these two checksum mismatches so I can access my OSD data would be greatly appreciated. Thanks, ./JRH p.s. I?m assuming that without the maps from the monitor, my OSD data is unrecoverable also.
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