How can we repair OSD leveldb?

[Dan Jakubiec <dan.jakubiec@xxxxxxxxx>]

Hello, we have a Ceph cluster with 8 OSD that recently lost power to all 8 machines.  We've managed to recover the XFS filesystems on 7 of the machines, but the OSD service is only starting on 1 of them.

The other 5 machines all have complaints similar to the following:

2016-08-17 09:32:15.549588 7fa2f4666800 -1 filestore(/var/lib/ceph/osd/ceph-1) Error initializing leveldb : Corruption: 6 missing files; e.g.: /var/lib/ceph/osd/ceph-1/current/omap/042421.ldb

How can we repair the leveldb to allow the OSDs to startup?  

Thanks,

-- Dan J

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